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548
kernel/.clang-format
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548
kernel/.clang-format
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# SPDX-License-Identifier: GPL-2.0
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#
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# clang-format configuration file. Intended for clang-format >= 4.
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#
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# For more information, see:
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#
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# Documentation/process/clang-format.rst
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# https://clang.llvm.org/docs/ClangFormat.html
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# https://clang.llvm.org/docs/ClangFormatStyleOptions.html
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#
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---
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AccessModifierOffset: -4
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AlignAfterOpenBracket: Align
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AlignConsecutiveAssignments: false
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AlignConsecutiveDeclarations: false
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#AlignEscapedNewlines: Left # Unknown to clang-format-4.0
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AlignOperands: true
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AlignTrailingComments: false
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AllowAllParametersOfDeclarationOnNextLine: false
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AllowShortBlocksOnASingleLine: false
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AllowShortCaseLabelsOnASingleLine: false
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AllowShortFunctionsOnASingleLine: None
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AllowShortIfStatementsOnASingleLine: false
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AllowShortLoopsOnASingleLine: false
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AlwaysBreakAfterDefinitionReturnType: None
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AlwaysBreakAfterReturnType: None
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AlwaysBreakBeforeMultilineStrings: false
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AlwaysBreakTemplateDeclarations: false
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BinPackArguments: true
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BinPackParameters: true
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BraceWrapping:
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AfterClass: false
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AfterControlStatement: false
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AfterEnum: false
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AfterFunction: true
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AfterNamespace: true
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AfterObjCDeclaration: false
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AfterStruct: false
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AfterUnion: false
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#AfterExternBlock: false # Unknown to clang-format-5.0
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BeforeCatch: false
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BeforeElse: false
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IndentBraces: false
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#SplitEmptyFunction: true # Unknown to clang-format-4.0
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#SplitEmptyRecord: true # Unknown to clang-format-4.0
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#SplitEmptyNamespace: true # Unknown to clang-format-4.0
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BreakBeforeBinaryOperators: None
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BreakBeforeBraces: Custom
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#BreakBeforeInheritanceComma: false # Unknown to clang-format-4.0
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BreakBeforeTernaryOperators: false
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BreakConstructorInitializersBeforeComma: false
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#BreakConstructorInitializers: BeforeComma # Unknown to clang-format-4.0
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BreakAfterJavaFieldAnnotations: false
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BreakStringLiterals: false
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ColumnLimit: 80
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CommentPragmas: '^ IWYU pragma:'
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#CompactNamespaces: false # Unknown to clang-format-4.0
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ConstructorInitializerAllOnOneLineOrOnePerLine: false
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ConstructorInitializerIndentWidth: 8
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ContinuationIndentWidth: 8
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Cpp11BracedListStyle: false
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DerivePointerAlignment: false
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DisableFormat: false
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ExperimentalAutoDetectBinPacking: false
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#FixNamespaceComments: false # Unknown to clang-format-4.0
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# Taken from:
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# git grep -h '^#define [^[:space:]]*for_each[^[:space:]]*(' include/ \
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# | sed "s,^#define \([^[:space:]]*for_each[^[:space:]]*\)(.*$, - '\1'," \
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# | sort | uniq
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ForEachMacros:
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- 'apei_estatus_for_each_section'
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- 'ata_for_each_dev'
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- 'ata_for_each_link'
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- '__ata_qc_for_each'
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- 'ata_qc_for_each'
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- 'ata_qc_for_each_raw'
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- 'ata_qc_for_each_with_internal'
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- 'ax25_for_each'
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- 'ax25_uid_for_each'
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- '__bio_for_each_bvec'
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- 'bio_for_each_bvec'
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- 'bio_for_each_bvec_all'
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- 'bio_for_each_integrity_vec'
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- '__bio_for_each_segment'
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- 'bio_for_each_segment'
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- 'bio_for_each_segment_all'
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- 'bio_list_for_each'
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- 'bip_for_each_vec'
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- 'bitmap_for_each_clear_region'
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- 'bitmap_for_each_set_region'
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- 'blkg_for_each_descendant_post'
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- 'blkg_for_each_descendant_pre'
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- 'blk_queue_for_each_rl'
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- 'bond_for_each_slave'
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- 'bond_for_each_slave_rcu'
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- 'bpf_for_each_spilled_reg'
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- 'btree_for_each_safe128'
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- 'btree_for_each_safe32'
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- 'btree_for_each_safe64'
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- 'btree_for_each_safel'
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- 'card_for_each_dev'
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- 'cgroup_taskset_for_each'
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- 'cgroup_taskset_for_each_leader'
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- 'cpufreq_for_each_entry'
|
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- 'cpufreq_for_each_entry_idx'
|
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- 'cpufreq_for_each_valid_entry'
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- 'cpufreq_for_each_valid_entry_idx'
|
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- 'css_for_each_child'
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- 'css_for_each_descendant_post'
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- 'css_for_each_descendant_pre'
|
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- 'device_for_each_child_node'
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- 'dma_fence_chain_for_each'
|
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- 'do_for_each_ftrace_op'
|
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- 'drm_atomic_crtc_for_each_plane'
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- 'drm_atomic_crtc_state_for_each_plane'
|
||||
- 'drm_atomic_crtc_state_for_each_plane_state'
|
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- 'drm_atomic_for_each_plane_damage'
|
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- 'drm_client_for_each_connector_iter'
|
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- 'drm_client_for_each_modeset'
|
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- 'drm_connector_for_each_possible_encoder'
|
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- 'drm_for_each_bridge_in_chain'
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- 'drm_for_each_connector_iter'
|
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- 'drm_for_each_crtc'
|
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- 'drm_for_each_encoder'
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- 'drm_for_each_encoder_mask'
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- 'drm_for_each_fb'
|
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- 'drm_for_each_legacy_plane'
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- 'drm_for_each_plane'
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- 'drm_for_each_plane_mask'
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- 'drm_for_each_privobj'
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- 'drm_mm_for_each_hole'
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- 'drm_mm_for_each_node'
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- 'drm_mm_for_each_node_in_range'
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- 'drm_mm_for_each_node_safe'
|
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- 'flow_action_for_each'
|
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- 'for_each_active_dev_scope'
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- 'for_each_active_drhd_unit'
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- 'for_each_active_iommu'
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- 'for_each_aggr_pgid'
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- 'for_each_available_child_of_node'
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- 'for_each_bio'
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- 'for_each_board_func_rsrc'
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- 'for_each_bvec'
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- 'for_each_card_auxs'
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- 'for_each_card_auxs_safe'
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- 'for_each_card_components'
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- 'for_each_card_dapms'
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- 'for_each_card_pre_auxs'
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- 'for_each_card_prelinks'
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- 'for_each_card_rtds'
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- 'for_each_card_rtds_safe'
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- 'for_each_card_widgets'
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- 'for_each_card_widgets_safe'
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- 'for_each_cgroup_storage_type'
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- 'for_each_child_of_node'
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- 'for_each_clear_bit'
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- 'for_each_clear_bit_from'
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- 'for_each_cmsghdr'
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- 'for_each_compatible_node'
|
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- 'for_each_component_dais'
|
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- 'for_each_component_dais_safe'
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- 'for_each_comp_order'
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- 'for_each_console'
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- 'for_each_cpu'
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- 'for_each_cpu_and'
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- 'for_each_cpu_not'
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- 'for_each_cpu_wrap'
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- 'for_each_dapm_widgets'
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- 'for_each_dev_addr'
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- 'for_each_dev_scope'
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- 'for_each_displayid_db'
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- 'for_each_dma_cap_mask'
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- 'for_each_dpcm_be'
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- 'for_each_dpcm_be_rollback'
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- 'for_each_dpcm_be_safe'
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- 'for_each_dpcm_fe'
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- 'for_each_drhd_unit'
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- 'for_each_dss_dev'
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- 'for_each_efi_memory_desc'
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- 'for_each_efi_memory_desc_in_map'
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- 'for_each_element'
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- 'for_each_element_extid'
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- 'for_each_element_id'
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- 'for_each_endpoint_of_node'
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- 'for_each_evictable_lru'
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- 'for_each_fib6_node_rt_rcu'
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- 'for_each_fib6_walker_rt'
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- 'for_each_free_mem_pfn_range_in_zone'
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- 'for_each_free_mem_pfn_range_in_zone_from'
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- 'for_each_free_mem_range'
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- 'for_each_free_mem_range_reverse'
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- 'for_each_func_rsrc'
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- 'for_each_hstate'
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- 'for_each_if'
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- 'for_each_iommu'
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- 'for_each_ip_tunnel_rcu'
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- 'for_each_irq_nr'
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- 'for_each_link_codecs'
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- 'for_each_link_cpus'
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- 'for_each_link_platforms'
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- 'for_each_lru'
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- 'for_each_matching_node'
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- 'for_each_matching_node_and_match'
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- 'for_each_member'
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- 'for_each_mem_region'
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- 'for_each_memblock_type'
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- 'for_each_memcg_cache_index'
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- 'for_each_mem_pfn_range'
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- '__for_each_mem_range'
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- 'for_each_mem_range'
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- '__for_each_mem_range_rev'
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- 'for_each_mem_range_rev'
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- 'for_each_migratetype_order'
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- 'for_each_msi_entry'
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- 'for_each_msi_entry_safe'
|
||||
- 'for_each_net'
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- 'for_each_net_continue_reverse'
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- 'for_each_netdev'
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- 'for_each_netdev_continue'
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||||
- 'for_each_netdev_continue_rcu'
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- 'for_each_netdev_continue_reverse'
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- 'for_each_netdev_feature'
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- 'for_each_netdev_in_bond_rcu'
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- 'for_each_netdev_rcu'
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- 'for_each_netdev_reverse'
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- 'for_each_netdev_safe'
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- 'for_each_net_rcu'
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- 'for_each_new_connector_in_state'
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- 'for_each_new_crtc_in_state'
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- 'for_each_new_mst_mgr_in_state'
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- 'for_each_new_plane_in_state'
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- 'for_each_new_private_obj_in_state'
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- 'for_each_node'
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- 'for_each_node_by_name'
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||||
- 'for_each_node_by_type'
|
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- 'for_each_node_mask'
|
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- 'for_each_node_state'
|
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- 'for_each_node_with_cpus'
|
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- 'for_each_node_with_property'
|
||||
- 'for_each_nonreserved_multicast_dest_pgid'
|
||||
- 'for_each_of_allnodes'
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- 'for_each_of_allnodes_from'
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- 'for_each_of_cpu_node'
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- 'for_each_of_pci_range'
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- 'for_each_old_connector_in_state'
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- 'for_each_old_crtc_in_state'
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- 'for_each_old_mst_mgr_in_state'
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- 'for_each_oldnew_connector_in_state'
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- 'for_each_oldnew_crtc_in_state'
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- 'for_each_oldnew_mst_mgr_in_state'
|
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- 'for_each_oldnew_plane_in_state'
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- 'for_each_oldnew_plane_in_state_reverse'
|
||||
- 'for_each_oldnew_private_obj_in_state'
|
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- 'for_each_old_plane_in_state'
|
||||
- 'for_each_old_private_obj_in_state'
|
||||
- 'for_each_online_cpu'
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- 'for_each_online_node'
|
||||
- 'for_each_online_pgdat'
|
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- 'for_each_pci_bridge'
|
||||
- 'for_each_pci_dev'
|
||||
- 'for_each_pci_msi_entry'
|
||||
- 'for_each_pcm_streams'
|
||||
- 'for_each_physmem_range'
|
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- 'for_each_populated_zone'
|
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- 'for_each_possible_cpu'
|
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- 'for_each_present_cpu'
|
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- 'for_each_prime_number'
|
||||
- 'for_each_prime_number_from'
|
||||
- 'for_each_process'
|
||||
- 'for_each_process_thread'
|
||||
- 'for_each_property_of_node'
|
||||
- 'for_each_registered_fb'
|
||||
- 'for_each_requested_gpio'
|
||||
- 'for_each_requested_gpio_in_range'
|
||||
- 'for_each_reserved_mem_range'
|
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- 'for_each_reserved_mem_region'
|
||||
- 'for_each_rtd_codec_dais'
|
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- 'for_each_rtd_codec_dais_rollback'
|
||||
- 'for_each_rtd_components'
|
||||
- 'for_each_rtd_cpu_dais'
|
||||
- 'for_each_rtd_cpu_dais_rollback'
|
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- 'for_each_rtd_dais'
|
||||
- 'for_each_set_bit'
|
||||
- 'for_each_set_bit_from'
|
||||
- 'for_each_set_clump8'
|
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- 'for_each_sg'
|
||||
- 'for_each_sg_dma_page'
|
||||
- 'for_each_sg_page'
|
||||
- 'for_each_sgtable_dma_page'
|
||||
- 'for_each_sgtable_dma_sg'
|
||||
- 'for_each_sgtable_page'
|
||||
- 'for_each_sgtable_sg'
|
||||
- 'for_each_sibling_event'
|
||||
- 'for_each_subelement'
|
||||
- 'for_each_subelement_extid'
|
||||
- 'for_each_subelement_id'
|
||||
- '__for_each_thread'
|
||||
- 'for_each_thread'
|
||||
- 'for_each_unicast_dest_pgid'
|
||||
- 'for_each_wakeup_source'
|
||||
- 'for_each_zone'
|
||||
- 'for_each_zone_zonelist'
|
||||
- 'for_each_zone_zonelist_nodemask'
|
||||
- 'fwnode_for_each_available_child_node'
|
||||
- 'fwnode_for_each_child_node'
|
||||
- 'fwnode_graph_for_each_endpoint'
|
||||
- 'gadget_for_each_ep'
|
||||
- 'genradix_for_each'
|
||||
- 'genradix_for_each_from'
|
||||
- 'hash_for_each'
|
||||
- 'hash_for_each_possible'
|
||||
- 'hash_for_each_possible_rcu'
|
||||
- 'hash_for_each_possible_rcu_notrace'
|
||||
- 'hash_for_each_possible_safe'
|
||||
- 'hash_for_each_rcu'
|
||||
- 'hash_for_each_safe'
|
||||
- 'hctx_for_each_ctx'
|
||||
- 'hlist_bl_for_each_entry'
|
||||
- 'hlist_bl_for_each_entry_rcu'
|
||||
- 'hlist_bl_for_each_entry_safe'
|
||||
- 'hlist_for_each'
|
||||
- 'hlist_for_each_entry'
|
||||
- 'hlist_for_each_entry_continue'
|
||||
- 'hlist_for_each_entry_continue_rcu'
|
||||
- 'hlist_for_each_entry_continue_rcu_bh'
|
||||
- 'hlist_for_each_entry_from'
|
||||
- 'hlist_for_each_entry_from_rcu'
|
||||
- 'hlist_for_each_entry_rcu'
|
||||
- 'hlist_for_each_entry_rcu_bh'
|
||||
- 'hlist_for_each_entry_rcu_notrace'
|
||||
- 'hlist_for_each_entry_safe'
|
||||
- '__hlist_for_each_rcu'
|
||||
- 'hlist_for_each_safe'
|
||||
- 'hlist_nulls_for_each_entry'
|
||||
- 'hlist_nulls_for_each_entry_from'
|
||||
- 'hlist_nulls_for_each_entry_rcu'
|
||||
- 'hlist_nulls_for_each_entry_safe'
|
||||
- 'i3c_bus_for_each_i2cdev'
|
||||
- 'i3c_bus_for_each_i3cdev'
|
||||
- 'ide_host_for_each_port'
|
||||
- 'ide_port_for_each_dev'
|
||||
- 'ide_port_for_each_present_dev'
|
||||
- 'idr_for_each_entry'
|
||||
- 'idr_for_each_entry_continue'
|
||||
- 'idr_for_each_entry_continue_ul'
|
||||
- 'idr_for_each_entry_ul'
|
||||
- 'in_dev_for_each_ifa_rcu'
|
||||
- 'in_dev_for_each_ifa_rtnl'
|
||||
- 'inet_bind_bucket_for_each'
|
||||
- 'inet_lhash2_for_each_icsk_rcu'
|
||||
- 'key_for_each'
|
||||
- 'key_for_each_safe'
|
||||
- 'klp_for_each_func'
|
||||
- 'klp_for_each_func_safe'
|
||||
- 'klp_for_each_func_static'
|
||||
- 'klp_for_each_object'
|
||||
- 'klp_for_each_object_safe'
|
||||
- 'klp_for_each_object_static'
|
||||
- 'kunit_suite_for_each_test_case'
|
||||
- 'kvm_for_each_memslot'
|
||||
- 'kvm_for_each_vcpu'
|
||||
- 'list_for_each'
|
||||
- 'list_for_each_codec'
|
||||
- 'list_for_each_codec_safe'
|
||||
- 'list_for_each_continue'
|
||||
- 'list_for_each_entry'
|
||||
- 'list_for_each_entry_continue'
|
||||
- 'list_for_each_entry_continue_rcu'
|
||||
- 'list_for_each_entry_continue_reverse'
|
||||
- 'list_for_each_entry_from'
|
||||
- 'list_for_each_entry_from_rcu'
|
||||
- 'list_for_each_entry_from_reverse'
|
||||
- 'list_for_each_entry_lockless'
|
||||
- 'list_for_each_entry_rcu'
|
||||
- 'list_for_each_entry_reverse'
|
||||
- 'list_for_each_entry_safe'
|
||||
- 'list_for_each_entry_safe_continue'
|
||||
- 'list_for_each_entry_safe_from'
|
||||
- 'list_for_each_entry_safe_reverse'
|
||||
- 'list_for_each_prev'
|
||||
- 'list_for_each_prev_safe'
|
||||
- 'list_for_each_safe'
|
||||
- 'llist_for_each'
|
||||
- 'llist_for_each_entry'
|
||||
- 'llist_for_each_entry_safe'
|
||||
- 'llist_for_each_safe'
|
||||
- 'mci_for_each_dimm'
|
||||
- 'media_device_for_each_entity'
|
||||
- 'media_device_for_each_intf'
|
||||
- 'media_device_for_each_link'
|
||||
- 'media_device_for_each_pad'
|
||||
- 'nanddev_io_for_each_page'
|
||||
- 'netdev_for_each_lower_dev'
|
||||
- 'netdev_for_each_lower_private'
|
||||
- 'netdev_for_each_lower_private_rcu'
|
||||
- 'netdev_for_each_mc_addr'
|
||||
- 'netdev_for_each_uc_addr'
|
||||
- 'netdev_for_each_upper_dev_rcu'
|
||||
- 'netdev_hw_addr_list_for_each'
|
||||
- 'nft_rule_for_each_expr'
|
||||
- 'nla_for_each_attr'
|
||||
- 'nla_for_each_nested'
|
||||
- 'nlmsg_for_each_attr'
|
||||
- 'nlmsg_for_each_msg'
|
||||
- 'nr_neigh_for_each'
|
||||
- 'nr_neigh_for_each_safe'
|
||||
- 'nr_node_for_each'
|
||||
- 'nr_node_for_each_safe'
|
||||
- 'of_for_each_phandle'
|
||||
- 'of_property_for_each_string'
|
||||
- 'of_property_for_each_u32'
|
||||
- 'pci_bus_for_each_resource'
|
||||
- 'pcm_for_each_format'
|
||||
- 'ping_portaddr_for_each_entry'
|
||||
- 'plist_for_each'
|
||||
- 'plist_for_each_continue'
|
||||
- 'plist_for_each_entry'
|
||||
- 'plist_for_each_entry_continue'
|
||||
- 'plist_for_each_entry_safe'
|
||||
- 'plist_for_each_safe'
|
||||
- 'pnp_for_each_card'
|
||||
- 'pnp_for_each_dev'
|
||||
- 'protocol_for_each_card'
|
||||
- 'protocol_for_each_dev'
|
||||
- 'queue_for_each_hw_ctx'
|
||||
- 'radix_tree_for_each_slot'
|
||||
- 'radix_tree_for_each_tagged'
|
||||
- 'rbtree_postorder_for_each_entry_safe'
|
||||
- 'rdma_for_each_block'
|
||||
- 'rdma_for_each_port'
|
||||
- 'rdma_umem_for_each_dma_block'
|
||||
- 'resource_list_for_each_entry'
|
||||
- 'resource_list_for_each_entry_safe'
|
||||
- 'rhl_for_each_entry_rcu'
|
||||
- 'rhl_for_each_rcu'
|
||||
- 'rht_for_each'
|
||||
- 'rht_for_each_entry'
|
||||
- 'rht_for_each_entry_from'
|
||||
- 'rht_for_each_entry_rcu'
|
||||
- 'rht_for_each_entry_rcu_from'
|
||||
- 'rht_for_each_entry_safe'
|
||||
- 'rht_for_each_from'
|
||||
- 'rht_for_each_rcu'
|
||||
- 'rht_for_each_rcu_from'
|
||||
- '__rq_for_each_bio'
|
||||
- 'rq_for_each_bvec'
|
||||
- 'rq_for_each_segment'
|
||||
- 'scsi_for_each_prot_sg'
|
||||
- 'scsi_for_each_sg'
|
||||
- 'sctp_for_each_hentry'
|
||||
- 'sctp_skb_for_each'
|
||||
- 'shdma_for_each_chan'
|
||||
- '__shost_for_each_device'
|
||||
- 'shost_for_each_device'
|
||||
- 'sk_for_each'
|
||||
- 'sk_for_each_bound'
|
||||
- 'sk_for_each_entry_offset_rcu'
|
||||
- 'sk_for_each_from'
|
||||
- 'sk_for_each_rcu'
|
||||
- 'sk_for_each_safe'
|
||||
- 'sk_nulls_for_each'
|
||||
- 'sk_nulls_for_each_from'
|
||||
- 'sk_nulls_for_each_rcu'
|
||||
- 'snd_array_for_each'
|
||||
- 'snd_pcm_group_for_each_entry'
|
||||
- 'snd_soc_dapm_widget_for_each_path'
|
||||
- 'snd_soc_dapm_widget_for_each_path_safe'
|
||||
- 'snd_soc_dapm_widget_for_each_sink_path'
|
||||
- 'snd_soc_dapm_widget_for_each_source_path'
|
||||
- 'tb_property_for_each'
|
||||
- 'tcf_exts_for_each_action'
|
||||
- 'udp_portaddr_for_each_entry'
|
||||
- 'udp_portaddr_for_each_entry_rcu'
|
||||
- 'usb_hub_for_each_child'
|
||||
- 'v4l2_device_for_each_subdev'
|
||||
- 'v4l2_m2m_for_each_dst_buf'
|
||||
- 'v4l2_m2m_for_each_dst_buf_safe'
|
||||
- 'v4l2_m2m_for_each_src_buf'
|
||||
- 'v4l2_m2m_for_each_src_buf_safe'
|
||||
- 'virtio_device_for_each_vq'
|
||||
- 'while_for_each_ftrace_op'
|
||||
- 'xa_for_each'
|
||||
- 'xa_for_each_marked'
|
||||
- 'xa_for_each_range'
|
||||
- 'xa_for_each_start'
|
||||
- 'xas_for_each'
|
||||
- 'xas_for_each_conflict'
|
||||
- 'xas_for_each_marked'
|
||||
- 'xbc_array_for_each_value'
|
||||
- 'xbc_for_each_key_value'
|
||||
- 'xbc_node_for_each_array_value'
|
||||
- 'xbc_node_for_each_child'
|
||||
- 'xbc_node_for_each_key_value'
|
||||
- 'zorro_for_each_dev'
|
||||
|
||||
#IncludeBlocks: Preserve # Unknown to clang-format-5.0
|
||||
IncludeCategories:
|
||||
- Regex: '.*'
|
||||
Priority: 1
|
||||
IncludeIsMainRegex: '(Test)?$'
|
||||
IndentCaseLabels: false
|
||||
#IndentPPDirectives: None # Unknown to clang-format-5.0
|
||||
IndentWidth: 8
|
||||
IndentWrappedFunctionNames: false
|
||||
JavaScriptQuotes: Leave
|
||||
JavaScriptWrapImports: true
|
||||
KeepEmptyLinesAtTheStartOfBlocks: false
|
||||
MacroBlockBegin: ''
|
||||
MacroBlockEnd: ''
|
||||
MaxEmptyLinesToKeep: 1
|
||||
NamespaceIndentation: None
|
||||
#ObjCBinPackProtocolList: Auto # Unknown to clang-format-5.0
|
||||
ObjCBlockIndentWidth: 8
|
||||
ObjCSpaceAfterProperty: true
|
||||
ObjCSpaceBeforeProtocolList: true
|
||||
|
||||
# Taken from git's rules
|
||||
#PenaltyBreakAssignment: 10 # Unknown to clang-format-4.0
|
||||
PenaltyBreakBeforeFirstCallParameter: 30
|
||||
PenaltyBreakComment: 10
|
||||
PenaltyBreakFirstLessLess: 0
|
||||
PenaltyBreakString: 10
|
||||
PenaltyExcessCharacter: 100
|
||||
PenaltyReturnTypeOnItsOwnLine: 60
|
||||
|
||||
PointerAlignment: Right
|
||||
ReflowComments: false
|
||||
SortIncludes: false
|
||||
#SortUsingDeclarations: false # Unknown to clang-format-4.0
|
||||
SpaceAfterCStyleCast: false
|
||||
SpaceAfterTemplateKeyword: true
|
||||
SpaceBeforeAssignmentOperators: true
|
||||
#SpaceBeforeCtorInitializerColon: true # Unknown to clang-format-5.0
|
||||
#SpaceBeforeInheritanceColon: true # Unknown to clang-format-5.0
|
||||
SpaceBeforeParens: ControlStatements
|
||||
#SpaceBeforeRangeBasedForLoopColon: true # Unknown to clang-format-5.0
|
||||
SpaceInEmptyParentheses: false
|
||||
SpacesBeforeTrailingComments: 1
|
||||
SpacesInAngles: false
|
||||
SpacesInContainerLiterals: false
|
||||
SpacesInCStyleCastParentheses: false
|
||||
SpacesInParentheses: false
|
||||
SpacesInSquareBrackets: false
|
||||
Standard: Cpp03
|
||||
TabWidth: 8
|
||||
UseTab: Always
|
||||
...
|
||||
4
kernel/.clangd
Normal file
4
kernel/.clangd
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
Diagnostics:
|
||||
UnusedIncludes: Strict
|
||||
ClangTidy:
|
||||
Remove: bugprone-sizeof-expression
|
||||
57
kernel/Kconfig
Normal file
57
kernel/Kconfig
Normal file
|
|
@ -0,0 +1,57 @@
|
|||
menu "KernelSU"
|
||||
|
||||
config KSU
|
||||
tristate "KernelSU function support"
|
||||
depends on OVERLAY_FS
|
||||
default y
|
||||
help
|
||||
Enable kernel-level root privileges on Android System.
|
||||
To compile as a module, choose M here: the
|
||||
module will be called kernelsu.
|
||||
|
||||
config KSU_DEBUG
|
||||
bool "KernelSU debug mode"
|
||||
depends on KSU
|
||||
default n
|
||||
help
|
||||
Enable KernelSU debug mode.
|
||||
|
||||
config KPM
|
||||
bool "Enable SukiSU KPM"
|
||||
depends on KSU && 64BIT
|
||||
default n
|
||||
help
|
||||
Enabling this option will activate the KPM feature of SukiSU.
|
||||
This option is suitable for scenarios where you need to force KPM to be enabled.
|
||||
but it may affect system stability.
|
||||
select KALLSYMS
|
||||
select KALLSYMS_ALL
|
||||
|
||||
choice
|
||||
prompt "KernelSU hook type"
|
||||
depends on KSU
|
||||
default KSU_KPROBES_HOOK
|
||||
help
|
||||
Hook type for KernelSU
|
||||
|
||||
config KSU_KPROBES_HOOK
|
||||
bool "Hook KernelSU with Kprobes"
|
||||
depends on KPROBES
|
||||
help
|
||||
If enabled, Hook required KernelSU syscalls with Kernel-probe.
|
||||
|
||||
config KSU_TRACEPOINT_HOOK
|
||||
bool "Hook KernelSU with Tracepoint"
|
||||
depends on TRACEPOINTS
|
||||
help
|
||||
If enabled, Hook required KernelSU syscalls with Tracepoint.
|
||||
|
||||
config KSU_MANUAL_HOOK
|
||||
bool "Hook KernelSU manually"
|
||||
depends on KSU != m
|
||||
help
|
||||
If enabled, Hook required KernelSU syscalls with manually-patched function.
|
||||
|
||||
endchoice
|
||||
|
||||
endmenu
|
||||
339
kernel/LICENSE
Normal file
339
kernel/LICENSE
Normal file
|
|
@ -0,0 +1,339 @@
|
|||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Lesser General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
distribute copies of the software, or if you modify it.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must give the recipients all the rights that
|
||||
you have. You must make sure that they, too, receive or can get the
|
||||
source code. And you must show them these terms so they know their
|
||||
rights.
|
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and
|
||||
(2) offer you this license which gives you legal permission to copy,
|
||||
distribute and/or modify the software.
|
||||
|
||||
Also, for each author's protection and ours, we want to make certain
|
||||
that everyone understands that there is no warranty for this free
|
||||
software. If the software is modified by someone else and passed on, we
|
||||
want its recipients to know that what they have is not the original, so
|
||||
that any problems introduced by others will not reflect on the original
|
||||
authors' reputations.
|
||||
|
||||
Finally, any free program is threatened constantly by software
|
||||
patents. We wish to avoid the danger that redistributors of a free
|
||||
program will individually obtain patent licenses, in effect making the
|
||||
program proprietary. To prevent this, we have made it clear that any
|
||||
patent must be licensed for everyone's free use or not licensed at all.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
0. This License applies to any program or other work which contains
|
||||
a notice placed by the copyright holder saying it may be distributed
|
||||
under the terms of this General Public License. The "Program", below,
|
||||
refers to any such program or work, and a "work based on the Program"
|
||||
means either the Program or any derivative work under copyright law:
|
||||
that is to say, a work containing the Program or a portion of it,
|
||||
either verbatim or with modifications and/or translated into another
|
||||
language. (Hereinafter, translation is included without limitation in
|
||||
the term "modification".) Each licensee is addressed as "you".
|
||||
|
||||
Activities other than copying, distribution and modification are not
|
||||
covered by this License; they are outside its scope. The act of
|
||||
running the Program is not restricted, and the output from the Program
|
||||
is covered only if its contents constitute a work based on the
|
||||
Program (independent of having been made by running the Program).
|
||||
Whether that is true depends on what the Program does.
|
||||
|
||||
1. You may copy and distribute verbatim copies of the Program's
|
||||
source code as you receive it, in any medium, provided that you
|
||||
conspicuously and appropriately publish on each copy an appropriate
|
||||
copyright notice and disclaimer of warranty; keep intact all the
|
||||
notices that refer to this License and to the absence of any warranty;
|
||||
and give any other recipients of the Program a copy of this License
|
||||
along with the Program.
|
||||
|
||||
You may charge a fee for the physical act of transferring a copy, and
|
||||
you may at your option offer warranty protection in exchange for a fee.
|
||||
|
||||
2. You may modify your copy or copies of the Program or any portion
|
||||
of it, thus forming a work based on the Program, and copy and
|
||||
distribute such modifications or work under the terms of Section 1
|
||||
above, provided that you also meet all of these conditions:
|
||||
|
||||
a) You must cause the modified files to carry prominent notices
|
||||
stating that you changed the files and the date of any change.
|
||||
|
||||
b) You must cause any work that you distribute or publish, that in
|
||||
whole or in part contains or is derived from the Program or any
|
||||
part thereof, to be licensed as a whole at no charge to all third
|
||||
parties under the terms of this License.
|
||||
|
||||
c) If the modified program normally reads commands interactively
|
||||
when run, you must cause it, when started running for such
|
||||
interactive use in the most ordinary way, to print or display an
|
||||
announcement including an appropriate copyright notice and a
|
||||
notice that there is no warranty (or else, saying that you provide
|
||||
a warranty) and that users may redistribute the program under
|
||||
these conditions, and telling the user how to view a copy of this
|
||||
License. (Exception: if the Program itself is interactive but
|
||||
does not normally print such an announcement, your work based on
|
||||
the Program is not required to print an announcement.)
|
||||
|
||||
These requirements apply to the modified work as a whole. If
|
||||
identifiable sections of that work are not derived from the Program,
|
||||
and can be reasonably considered independent and separate works in
|
||||
themselves, then this License, and its terms, do not apply to those
|
||||
sections when you distribute them as separate works. But when you
|
||||
distribute the same sections as part of a whole which is a work based
|
||||
on the Program, the distribution of the whole must be on the terms of
|
||||
this License, whose permissions for other licensees extend to the
|
||||
entire whole, and thus to each and every part regardless of who wrote it.
|
||||
|
||||
Thus, it is not the intent of this section to claim rights or contest
|
||||
your rights to work written entirely by you; rather, the intent is to
|
||||
exercise the right to control the distribution of derivative or
|
||||
collective works based on the Program.
|
||||
|
||||
In addition, mere aggregation of another work not based on the Program
|
||||
with the Program (or with a work based on the Program) on a volume of
|
||||
a storage or distribution medium does not bring the other work under
|
||||
the scope of this License.
|
||||
|
||||
3. You may copy and distribute the Program (or a work based on it,
|
||||
under Section 2) in object code or executable form under the terms of
|
||||
Sections 1 and 2 above provided that you also do one of the following:
|
||||
|
||||
a) Accompany it with the complete corresponding machine-readable
|
||||
source code, which must be distributed under the terms of Sections
|
||||
1 and 2 above on a medium customarily used for software interchange; or,
|
||||
|
||||
b) Accompany it with a written offer, valid for at least three
|
||||
years, to give any third party, for a charge no more than your
|
||||
cost of physically performing source distribution, a complete
|
||||
machine-readable copy of the corresponding source code, to be
|
||||
distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
||||
to distribute corresponding source code. (This alternative is
|
||||
allowed only for noncommercial distribution and only if you
|
||||
received the program in object code or executable form with such
|
||||
an offer, in accord with Subsection b above.)
|
||||
|
||||
The source code for a work means the preferred form of the work for
|
||||
making modifications to it. For an executable work, complete source
|
||||
code means all the source code for all modules it contains, plus any
|
||||
associated interface definition files, plus the scripts used to
|
||||
control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
||||
form) with the major components (compiler, kernel, and so on) of the
|
||||
operating system on which the executable runs, unless that component
|
||||
itself accompanies the executable.
|
||||
|
||||
If distribution of executable or object code is made by offering
|
||||
access to copy from a designated place, then offering equivalent
|
||||
access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
|
||||
compelled to copy the source along with the object code.
|
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program
|
||||
except as expressly provided under this License. Any attempt
|
||||
otherwise to copy, modify, sublicense or distribute the Program is
|
||||
void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
|
||||
|
||||
5. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Program (or any work based on the
|
||||
Program), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
|
||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License.
|
||||
130
kernel/Makefile
Normal file
130
kernel/Makefile
Normal file
|
|
@ -0,0 +1,130 @@
|
|||
kernelsu-objs := ksu.o
|
||||
kernelsu-objs += allowlist.o
|
||||
kernelsu-objs += dynamic_manager.o
|
||||
kernelsu-objs += apk_sign.o
|
||||
kernelsu-objs += sucompat.o
|
||||
kernelsu-objs += throne_tracker.o
|
||||
kernelsu-objs += core_hook.o
|
||||
kernelsu-objs += ksud.o
|
||||
kernelsu-objs += embed_ksud.o
|
||||
kernelsu-objs += kernel_compat.o
|
||||
kernelsu-objs += throne_comm.o
|
||||
|
||||
ifeq ($(CONFIG_KSU_TRACEPOINT_HOOK), y)
|
||||
kernelsu-objs += ksu_trace.o
|
||||
endif
|
||||
|
||||
kernelsu-objs += selinux/selinux.o
|
||||
kernelsu-objs += selinux/sepolicy.o
|
||||
kernelsu-objs += selinux/rules.o
|
||||
ccflags-y += -I$(srctree)/security/selinux -I$(srctree)/security/selinux/include
|
||||
ccflags-y += -I$(objtree)/security/selinux -include $(srctree)/include/uapi/asm-generic/errno.h
|
||||
|
||||
obj-$(CONFIG_KSU) += kernelsu.o
|
||||
obj-$(CONFIG_KSU_TRACEPOINT_HOOK) += ksu_trace_export.o
|
||||
|
||||
obj-$(CONFIG_KPM) += kpm/
|
||||
|
||||
|
||||
REPO_OWNER := SukiSU-Ultra
|
||||
REPO_NAME := SukiSU-Ultra
|
||||
REPO_BRANCH := main
|
||||
KSU_VERSION_API := 3.2.0
|
||||
|
||||
GIT_BIN := /usr/bin/env PATH="$$PATH":/usr/bin:/usr/local/bin git
|
||||
CURL_BIN := /usr/bin/env PATH="$$PATH":/usr/bin:/usr/local/bin curl
|
||||
|
||||
KSU_GITHUB_VERSION := $(shell $(CURL_BIN) -s "https://api.github.com/repos/$(REPO_OWNER)/$(REPO_NAME)/releases/latest" | grep '"tag_name":' | sed -E 's/.*"v([^"]+)".*/\1/')
|
||||
KSU_GITHUB_VERSION_COMMIT := $(shell $(CURL_BIN) -sI "https://api.github.com/repos/$(REPO_OWNER)/$(REPO_NAME)/commits?sha=$(REPO_BRANCH)&per_page=1" | grep -i "link:" | sed -n 's/.*page=\([0-9]*\)>; rel="last".*/\1/p')
|
||||
|
||||
LOCAL_GIT_EXISTS := $(shell test -e $(srctree)/$(src)/../.git && echo 1 || echo 0)
|
||||
|
||||
define get_ksu_version_full
|
||||
v$1-$(shell cd $(srctree)/$(src); $(GIT_BIN) rev-parse --short=8 HEAD)@$(shell cd $(srctree)/$(src); $(GIT_BIN) rev-parse --abbrev-ref HEAD)
|
||||
endef
|
||||
|
||||
ifeq ($(KSU_GITHUB_VERSION_COMMIT),)
|
||||
ifeq ($(LOCAL_GIT_EXISTS),1)
|
||||
$(shell cd $(srctree)/$(src); [ -f ../.git/shallow ] && $(GIT_BIN) fetch --unshallow)
|
||||
KSU_LOCAL_VERSION := $(shell cd $(srctree)/$(src); $(GIT_BIN) rev-list --count $(REPO_BRANCH))
|
||||
KSU_VERSION := $(shell expr 10000 + $(KSU_LOCAL_VERSION) + 700)
|
||||
$(info -- $(REPO_NAME) version (local .git): $(KSU_VERSION))
|
||||
else
|
||||
KSU_VERSION := 13000
|
||||
$(warning -- Could not fetch version online or via local .git! Using fallback version: $(KSU_VERSION))
|
||||
endif
|
||||
else
|
||||
KSU_VERSION := $(shell expr 10000 + $(KSU_GITHUB_VERSION_COMMIT) + 700)
|
||||
$(info -- $(REPO_NAME) version (GitHub): $(KSU_VERSION))
|
||||
endif
|
||||
|
||||
ifeq ($(KSU_GITHUB_VERSION),)
|
||||
ifeq ($(LOCAL_GIT_EXISTS),1)
|
||||
$(shell cd $(srctree)/$(src); [ -f ../.git/shallow ] && $(GIT_BIN) fetch --unshallow)
|
||||
KSU_VERSION_FULL := $(call get_ksu_version_full,$(KSU_VERSION_API))
|
||||
$(info -- $(REPO_NAME) version (local .git): $(KSU_VERSION_FULL))
|
||||
$(info -- $(REPO_NAME) Formatted version (local .git): $(KSU_VERSION))
|
||||
else
|
||||
KSU_VERSION_FULL := v$(KSU_VERSION_API)-$(REPO_NAME)-unknown@unknown
|
||||
$(warning -- $(REPO_NAME) version: $(KSU_VERSION_FULL))
|
||||
endif
|
||||
else
|
||||
$(shell cd $(srctree)/$(src); [ -f ../.git/shallow ] && $(GIT_BIN) fetch --unshallow)
|
||||
KSU_VERSION_FULL := $(call get_ksu_version_full,$(KSU_GITHUB_VERSION))
|
||||
$(info -- $(REPO_NAME) version (Github): $(KSU_VERSION_FULL))
|
||||
endif
|
||||
|
||||
ccflags-y += -DKSU_VERSION=$(KSU_VERSION)
|
||||
ccflags-y += -DKSU_VERSION_FULL=\"$(KSU_VERSION_FULL)\"
|
||||
|
||||
# Custom Signs
|
||||
ifdef KSU_EXPECTED_SIZE
|
||||
ccflags-y += -DEXPECTED_SIZE=$(KSU_EXPECTED_SIZE)
|
||||
$(info -- Custom KernelSU Manager signature size: $(KSU_EXPECTED_SIZE))
|
||||
endif
|
||||
|
||||
ifdef KSU_EXPECTED_HASH
|
||||
ccflags-y += -DEXPECTED_HASH=\"$(KSU_EXPECTED_HASH)\"
|
||||
$(info -- Custom KernelSU Manager signature hash: $(KSU_EXPECTED_HASH))
|
||||
endif
|
||||
|
||||
ifdef KSU_MANAGER_PACKAGE
|
||||
ccflags-y += -DKSU_MANAGER_PACKAGE=\"$(KSU_MANAGER_PACKAGE)\"
|
||||
$(info -- SukiSU Manager package name: $(KSU_MANAGER_PACKAGE))
|
||||
endif
|
||||
|
||||
$(info -- Supported Unofficial Manager: 5ec1cff (GKI) ShirkNeko udochina (GKI and KPM))
|
||||
|
||||
ifeq ($(CONFIG_KSU_KPROBES_HOOK), y)
|
||||
$(info -- SukiSU: CONFIG_KSU_KPROBES_HOOK)
|
||||
else ifeq ($(CONFIG_KSU_TRACEPOINT_HOOK), y)
|
||||
$(info -- SukiSU: CONFIG_KSU_TRACEPOINT_HOOK)
|
||||
else ifeq ($(CONFIG_KSU_MANUAL_HOOK), y)
|
||||
$(info -- SukiSU: CONFIG_KSU_MANUAL_HOOK)
|
||||
endif
|
||||
|
||||
KERNEL_VERSION := $(VERSION).$(PATCHLEVEL)
|
||||
KERNEL_TYPE := Non-GKI
|
||||
# Check for GKI 2.0 (5.10+ or 6.x+)
|
||||
ifneq ($(shell test \( $(VERSION) -ge 5 -a $(PATCHLEVEL) -ge 10 \) -o $(VERSION) -ge 6; echo $$?),0)
|
||||
# Check for GKI 1.0 (5.4)
|
||||
ifeq ($(shell test $(VERSION)-$(PATCHLEVEL) = 5-4; echo $$?),0)
|
||||
KERNEL_TYPE := GKI 1.0
|
||||
endif
|
||||
else
|
||||
KERNEL_TYPE := GKI 2.0
|
||||
endif
|
||||
$(info -- KERNEL_VERSION: $(KERNEL_VERSION))
|
||||
$(info -- KERNEL_TYPE: $(KERNEL_TYPE))
|
||||
|
||||
$(info -- KERNEL_VERSION: $(KERNEL_VERSION))
|
||||
ifeq ($(CONFIG_KPM), y)
|
||||
$(info -- KPM is enabled)
|
||||
else
|
||||
$(info -- KPM is disabled)
|
||||
endif
|
||||
|
||||
ccflags-y += -Wno-implicit-function-declaration -Wno-strict-prototypes -Wno-int-conversion -Wno-gcc-compat
|
||||
ccflags-y += -Wno-declaration-after-statement -Wno-unused-function
|
||||
|
||||
# Keep a new line here!! Because someone may append config
|
||||
526
kernel/allowlist.c
Normal file
526
kernel/allowlist.c
Normal file
|
|
@ -0,0 +1,526 @@
|
|||
#include <linux/capability.h>
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/gfp.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/printk.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/compiler_types.h>
|
||||
|
||||
#include "ksu.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "selinux/selinux.h"
|
||||
#include "kernel_compat.h"
|
||||
#include "allowlist.h"
|
||||
#include "manager.h"
|
||||
|
||||
#define FILE_MAGIC 0x7f4b5355 // ' KSU', u32
|
||||
#define FILE_FORMAT_VERSION 3 // u32
|
||||
|
||||
#define KSU_APP_PROFILE_PRESERVE_UID 9999 // NOBODY_UID
|
||||
#define KSU_DEFAULT_SELINUX_DOMAIN "u:r:su:s0"
|
||||
|
||||
static DEFINE_MUTEX(allowlist_mutex);
|
||||
|
||||
// default profiles, these may be used frequently, so we cache it
|
||||
static struct root_profile default_root_profile;
|
||||
static struct non_root_profile default_non_root_profile;
|
||||
|
||||
static int allow_list_arr[PAGE_SIZE / sizeof(int)] __read_mostly __aligned(PAGE_SIZE);
|
||||
static int allow_list_pointer __read_mostly = 0;
|
||||
|
||||
static void remove_uid_from_arr(uid_t uid)
|
||||
{
|
||||
int *temp_arr;
|
||||
int i, j;
|
||||
|
||||
if (allow_list_pointer == 0)
|
||||
return;
|
||||
|
||||
temp_arr = kmalloc(sizeof(allow_list_arr), GFP_KERNEL);
|
||||
if (temp_arr == NULL) {
|
||||
pr_err("%s: unable to allocate memory\n", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
for (i = j = 0; i < allow_list_pointer; i++) {
|
||||
if (allow_list_arr[i] == uid)
|
||||
continue;
|
||||
temp_arr[j++] = allow_list_arr[i];
|
||||
}
|
||||
|
||||
allow_list_pointer = j;
|
||||
|
||||
for (; j < ARRAY_SIZE(allow_list_arr); j++)
|
||||
temp_arr[j] = -1;
|
||||
|
||||
memcpy(&allow_list_arr, temp_arr, PAGE_SIZE);
|
||||
kfree(temp_arr);
|
||||
}
|
||||
|
||||
static void init_default_profiles()
|
||||
{
|
||||
kernel_cap_t full_cap = CAP_FULL_SET;
|
||||
|
||||
default_root_profile.uid = 0;
|
||||
default_root_profile.gid = 0;
|
||||
default_root_profile.groups_count = 1;
|
||||
default_root_profile.groups[0] = 0;
|
||||
memcpy(&default_root_profile.capabilities.effective, &full_cap,
|
||||
sizeof(default_root_profile.capabilities.effective));
|
||||
default_root_profile.namespaces = 0;
|
||||
strcpy(default_root_profile.selinux_domain, KSU_DEFAULT_SELINUX_DOMAIN);
|
||||
|
||||
// This means that we will umount modules by default!
|
||||
default_non_root_profile.umount_modules = true;
|
||||
}
|
||||
|
||||
struct perm_data {
|
||||
struct list_head list;
|
||||
struct app_profile profile;
|
||||
};
|
||||
|
||||
static struct list_head allow_list;
|
||||
|
||||
static uint8_t allow_list_bitmap[PAGE_SIZE] __read_mostly __aligned(PAGE_SIZE);
|
||||
#define BITMAP_UID_MAX ((sizeof(allow_list_bitmap) * BITS_PER_BYTE) - 1)
|
||||
|
||||
#define KERNEL_SU_ALLOWLIST "/data/adb/ksu/.allowlist"
|
||||
|
||||
static struct work_struct ksu_save_work;
|
||||
static struct work_struct ksu_load_work;
|
||||
|
||||
bool persistent_allow_list(void);
|
||||
|
||||
void ksu_show_allow_list(void)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
pr_info("ksu_show_allow_list\n");
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
pr_info("uid :%d, allow: %d\n", p->profile.current_uid,
|
||||
p->profile.allow_su);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
static void ksu_grant_root_to_shell()
|
||||
{
|
||||
struct app_profile profile = {
|
||||
.version = KSU_APP_PROFILE_VER,
|
||||
.allow_su = true,
|
||||
.current_uid = 2000,
|
||||
};
|
||||
strcpy(profile.key, "com.android.shell");
|
||||
strcpy(profile.rp_config.profile.selinux_domain, KSU_DEFAULT_SELINUX_DOMAIN);
|
||||
ksu_set_app_profile(&profile, false);
|
||||
}
|
||||
#endif
|
||||
|
||||
bool ksu_get_app_profile(struct app_profile *profile)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
bool found = false;
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
bool uid_match = profile->current_uid == p->profile.current_uid;
|
||||
if (uid_match) {
|
||||
// found it, override it with ours
|
||||
memcpy(profile, &p->profile, sizeof(*profile));
|
||||
found = true;
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
|
||||
exit:
|
||||
return found;
|
||||
}
|
||||
|
||||
static inline bool forbid_system_uid(uid_t uid) {
|
||||
#define SHELL_UID 2000
|
||||
#define SYSTEM_UID 1000
|
||||
return uid < SHELL_UID && uid != SYSTEM_UID;
|
||||
}
|
||||
|
||||
static bool profile_valid(struct app_profile *profile)
|
||||
{
|
||||
if (!profile) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (profile->version < KSU_APP_PROFILE_VER) {
|
||||
pr_info("Unsupported profile version: %d\n", profile->version);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (profile->allow_su) {
|
||||
if (profile->rp_config.profile.groups_count > KSU_MAX_GROUPS) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (strlen(profile->rp_config.profile.selinux_domain) == 0) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ksu_set_app_profile(struct app_profile *profile, bool persist)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
bool result = false;
|
||||
|
||||
if (!profile_valid(profile)) {
|
||||
pr_err("Failed to set app profile: invalid profile!\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
// both uid and package must match, otherwise it will break multiple package with different user id
|
||||
if (profile->current_uid == p->profile.current_uid &&
|
||||
!strcmp(profile->key, p->profile.key)) {
|
||||
// found it, just override it all!
|
||||
memcpy(&p->profile, profile, sizeof(*profile));
|
||||
result = true;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
// not found, alloc a new node!
|
||||
p = (struct perm_data *)kmalloc(sizeof(struct perm_data), GFP_KERNEL);
|
||||
if (!p) {
|
||||
pr_err("ksu_set_app_profile alloc failed\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
memcpy(&p->profile, profile, sizeof(*profile));
|
||||
if (profile->allow_su) {
|
||||
pr_info("set root profile, key: %s, uid: %d, gid: %d, context: %s\n",
|
||||
profile->key, profile->current_uid,
|
||||
profile->rp_config.profile.gid,
|
||||
profile->rp_config.profile.selinux_domain);
|
||||
} else {
|
||||
pr_info("set app profile, key: %s, uid: %d, umount modules: %d\n",
|
||||
profile->key, profile->current_uid,
|
||||
profile->nrp_config.profile.umount_modules);
|
||||
}
|
||||
list_add_tail(&p->list, &allow_list);
|
||||
|
||||
out:
|
||||
if (profile->current_uid <= BITMAP_UID_MAX) {
|
||||
if (profile->allow_su)
|
||||
allow_list_bitmap[profile->current_uid / BITS_PER_BYTE] |= 1 << (profile->current_uid % BITS_PER_BYTE);
|
||||
else
|
||||
allow_list_bitmap[profile->current_uid / BITS_PER_BYTE] &= ~(1 << (profile->current_uid % BITS_PER_BYTE));
|
||||
} else {
|
||||
if (profile->allow_su) {
|
||||
/*
|
||||
* 1024 apps with uid higher than BITMAP_UID_MAX
|
||||
* registered to request superuser?
|
||||
*/
|
||||
if (allow_list_pointer >= ARRAY_SIZE(allow_list_arr)) {
|
||||
pr_err("too many apps registered\n");
|
||||
WARN_ON(1);
|
||||
return false;
|
||||
}
|
||||
allow_list_arr[allow_list_pointer++] = profile->current_uid;
|
||||
} else {
|
||||
remove_uid_from_arr(profile->current_uid);
|
||||
}
|
||||
}
|
||||
result = true;
|
||||
|
||||
// check if the default profiles is changed, cache it to a single struct to accelerate access.
|
||||
if (unlikely(!strcmp(profile->key, "$"))) {
|
||||
// set default non root profile
|
||||
memcpy(&default_non_root_profile, &profile->nrp_config.profile,
|
||||
sizeof(default_non_root_profile));
|
||||
}
|
||||
|
||||
if (unlikely(!strcmp(profile->key, "#"))) {
|
||||
// set default root profile
|
||||
memcpy(&default_root_profile, &profile->rp_config.profile,
|
||||
sizeof(default_root_profile));
|
||||
}
|
||||
|
||||
if (persist)
|
||||
persistent_allow_list();
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
bool __ksu_is_allow_uid(uid_t uid)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (unlikely(uid == 0)) {
|
||||
// already root, but only allow our domain.
|
||||
return is_ksu_domain();
|
||||
}
|
||||
|
||||
if (forbid_system_uid(uid)) {
|
||||
// do not bother going through the list if it's system
|
||||
return false;
|
||||
}
|
||||
|
||||
if (likely(ksu_is_manager_uid_valid()) && unlikely(ksu_get_manager_uid() == uid)) {
|
||||
// manager is always allowed!
|
||||
return true;
|
||||
}
|
||||
|
||||
if (likely(uid <= BITMAP_UID_MAX)) {
|
||||
return !!(allow_list_bitmap[uid / BITS_PER_BYTE] & (1 << (uid % BITS_PER_BYTE)));
|
||||
} else {
|
||||
for (i = 0; i < allow_list_pointer; i++) {
|
||||
if (allow_list_arr[i] == uid)
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
bool ksu_uid_should_umount(uid_t uid)
|
||||
{
|
||||
struct app_profile profile = { .current_uid = uid };
|
||||
if (likely(ksu_is_manager_uid_valid()) && unlikely(ksu_get_manager_uid() == uid)) {
|
||||
// we should not umount on manager!
|
||||
return false;
|
||||
}
|
||||
bool found = ksu_get_app_profile(&profile);
|
||||
if (!found) {
|
||||
// no app profile found, it must be non root app
|
||||
return default_non_root_profile.umount_modules;
|
||||
}
|
||||
if (profile.allow_su) {
|
||||
// if found and it is granted to su, we shouldn't umount for it
|
||||
return false;
|
||||
} else {
|
||||
// found an app profile
|
||||
if (profile.nrp_config.use_default) {
|
||||
return default_non_root_profile.umount_modules;
|
||||
} else {
|
||||
return profile.nrp_config.profile.umount_modules;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
struct root_profile *ksu_get_root_profile(uid_t uid)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
if (uid == p->profile.current_uid && p->profile.allow_su) {
|
||||
if (!p->profile.rp_config.use_default) {
|
||||
return &p->profile.rp_config.profile;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// use default profile
|
||||
return &default_root_profile;
|
||||
}
|
||||
|
||||
bool ksu_get_allow_list(int *array, int *length, bool allow)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
int i = 0;
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
// pr_info("get_allow_list uid: %d allow: %d\n", p->uid, p->allow);
|
||||
if (p->profile.allow_su == allow) {
|
||||
array[i++] = p->profile.current_uid;
|
||||
}
|
||||
}
|
||||
*length = i;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void do_save_allow_list(struct work_struct *work)
|
||||
{
|
||||
u32 magic = FILE_MAGIC;
|
||||
u32 version = FILE_FORMAT_VERSION;
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
loff_t off = 0;
|
||||
|
||||
struct file *fp =
|
||||
ksu_filp_open_compat(KERNEL_SU_ALLOWLIST, O_WRONLY | O_CREAT | O_TRUNC, 0644);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("save_allow_list create file failed: %ld\n", PTR_ERR(fp));
|
||||
return;
|
||||
}
|
||||
|
||||
// store magic and version
|
||||
if (ksu_kernel_write_compat(fp, &magic, sizeof(magic), &off) !=
|
||||
sizeof(magic)) {
|
||||
pr_err("save_allow_list write magic failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ksu_kernel_write_compat(fp, &version, sizeof(version), &off) !=
|
||||
sizeof(version)) {
|
||||
pr_err("save_allow_list write version failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
pr_info("save allow list, name: %s uid :%d, allow: %d\n",
|
||||
p->profile.key, p->profile.current_uid,
|
||||
p->profile.allow_su);
|
||||
|
||||
ksu_kernel_write_compat(fp, &p->profile, sizeof(p->profile),
|
||||
&off);
|
||||
}
|
||||
|
||||
exit:
|
||||
filp_close(fp, 0);
|
||||
}
|
||||
|
||||
void do_load_allow_list(struct work_struct *work)
|
||||
{
|
||||
loff_t off = 0;
|
||||
ssize_t ret = 0;
|
||||
struct file *fp = NULL;
|
||||
u32 magic;
|
||||
u32 version;
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
// always allow adb shell by default
|
||||
ksu_grant_root_to_shell();
|
||||
#endif
|
||||
|
||||
// load allowlist now!
|
||||
fp = ksu_filp_open_compat(KERNEL_SU_ALLOWLIST, O_RDONLY, 0);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("load_allow_list open file failed: %ld\n", PTR_ERR(fp));
|
||||
return;
|
||||
}
|
||||
|
||||
// verify magic
|
||||
if (ksu_kernel_read_compat(fp, &magic, sizeof(magic), &off) !=
|
||||
sizeof(magic) ||
|
||||
magic != FILE_MAGIC) {
|
||||
pr_err("allowlist file invalid: %d!\n", magic);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ksu_kernel_read_compat(fp, &version, sizeof(version), &off) !=
|
||||
sizeof(version)) {
|
||||
pr_err("allowlist read version: %d failed\n", version);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
pr_info("allowlist version: %d\n", version);
|
||||
|
||||
while (true) {
|
||||
struct app_profile profile;
|
||||
|
||||
ret = ksu_kernel_read_compat(fp, &profile, sizeof(profile),
|
||||
&off);
|
||||
|
||||
if (ret <= 0) {
|
||||
pr_info("load_allow_list read err: %zd\n", ret);
|
||||
break;
|
||||
}
|
||||
|
||||
pr_info("load_allow_uid, name: %s, uid: %d, allow: %d\n",
|
||||
profile.key, profile.current_uid, profile.allow_su);
|
||||
ksu_set_app_profile(&profile, false);
|
||||
}
|
||||
|
||||
exit:
|
||||
ksu_show_allow_list();
|
||||
filp_close(fp, 0);
|
||||
}
|
||||
|
||||
void ksu_prune_allowlist(bool (*is_uid_valid)(uid_t, char *, void *), void *data)
|
||||
{
|
||||
struct perm_data *np = NULL;
|
||||
struct perm_data *n = NULL;
|
||||
|
||||
bool modified = false;
|
||||
// TODO: use RCU!
|
||||
mutex_lock(&allowlist_mutex);
|
||||
list_for_each_entry_safe (np, n, &allow_list, list) {
|
||||
uid_t uid = np->profile.current_uid;
|
||||
char *package = np->profile.key;
|
||||
// we use this uid for special cases, don't prune it!
|
||||
bool is_preserved_uid = uid == KSU_APP_PROFILE_PRESERVE_UID;
|
||||
if (!is_preserved_uid && !is_uid_valid(uid, package, data)) {
|
||||
modified = true;
|
||||
pr_info("prune uid: %d, package: %s\n", uid, package);
|
||||
list_del(&np->list);
|
||||
if (likely(uid <= BITMAP_UID_MAX)) {
|
||||
allow_list_bitmap[uid / BITS_PER_BYTE] &= ~(1 << (uid % BITS_PER_BYTE));
|
||||
}
|
||||
remove_uid_from_arr(uid);
|
||||
smp_mb();
|
||||
kfree(np);
|
||||
}
|
||||
}
|
||||
mutex_unlock(&allowlist_mutex);
|
||||
|
||||
if (modified) {
|
||||
persistent_allow_list();
|
||||
}
|
||||
}
|
||||
|
||||
// make sure allow list works cross boot
|
||||
bool persistent_allow_list(void)
|
||||
{
|
||||
return ksu_queue_work(&ksu_save_work);
|
||||
}
|
||||
|
||||
bool ksu_load_allow_list(void)
|
||||
{
|
||||
return ksu_queue_work(&ksu_load_work);
|
||||
}
|
||||
|
||||
void ksu_allowlist_init(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
BUILD_BUG_ON(sizeof(allow_list_bitmap) != PAGE_SIZE);
|
||||
BUILD_BUG_ON(sizeof(allow_list_arr) != PAGE_SIZE);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(allow_list_arr); i++)
|
||||
allow_list_arr[i] = -1;
|
||||
|
||||
INIT_LIST_HEAD(&allow_list);
|
||||
|
||||
INIT_WORK(&ksu_save_work, do_save_allow_list);
|
||||
INIT_WORK(&ksu_load_work, do_load_allow_list);
|
||||
|
||||
init_default_profiles();
|
||||
}
|
||||
|
||||
void ksu_allowlist_exit(void)
|
||||
{
|
||||
struct perm_data *np = NULL;
|
||||
struct perm_data *n = NULL;
|
||||
|
||||
do_save_allow_list(NULL);
|
||||
|
||||
// free allowlist
|
||||
mutex_lock(&allowlist_mutex);
|
||||
list_for_each_entry_safe (np, n, &allow_list, list) {
|
||||
list_del(&np->list);
|
||||
kfree(np);
|
||||
}
|
||||
mutex_unlock(&allowlist_mutex);
|
||||
}
|
||||
27
kernel/allowlist.h
Normal file
27
kernel/allowlist.h
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
#ifndef __KSU_H_ALLOWLIST
|
||||
#define __KSU_H_ALLOWLIST
|
||||
|
||||
#include <linux/types.h>
|
||||
#include "ksu.h"
|
||||
|
||||
void ksu_allowlist_init(void);
|
||||
|
||||
void ksu_allowlist_exit(void);
|
||||
|
||||
bool ksu_load_allow_list(void);
|
||||
|
||||
void ksu_show_allow_list(void);
|
||||
|
||||
bool __ksu_is_allow_uid(uid_t uid);
|
||||
#define ksu_is_allow_uid(uid) unlikely(__ksu_is_allow_uid(uid))
|
||||
|
||||
bool ksu_get_allow_list(int *array, int *length, bool allow);
|
||||
|
||||
void ksu_prune_allowlist(bool (*is_uid_exist)(uid_t, char *, void *), void *data);
|
||||
|
||||
bool ksu_get_app_profile(struct app_profile *);
|
||||
bool ksu_set_app_profile(struct app_profile *, bool persist);
|
||||
|
||||
bool ksu_uid_should_umount(uid_t uid);
|
||||
struct root_profile *ksu_get_root_profile(uid_t uid);
|
||||
#endif
|
||||
422
kernel/apk_sign.c
Normal file
422
kernel/apk_sign.c
Normal file
|
|
@ -0,0 +1,422 @@
|
|||
#include <linux/err.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/gfp.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/version.h>
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
#include <linux/moduleparam.h>
|
||||
#endif
|
||||
#include <crypto/hash.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 11, 0)
|
||||
#include <crypto/sha2.h>
|
||||
#else
|
||||
#include <crypto/sha.h>
|
||||
#endif
|
||||
|
||||
#include "apk_sign.h"
|
||||
#include "dynamic_manager.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "kernel_compat.h"
|
||||
#include "manager_sign.h"
|
||||
|
||||
struct sdesc {
|
||||
struct shash_desc shash;
|
||||
char ctx[];
|
||||
};
|
||||
|
||||
static struct apk_sign_key {
|
||||
unsigned size;
|
||||
const char *sha256;
|
||||
} apk_sign_keys[] = {
|
||||
{EXPECTED_SIZE_SHIRKNEKO, EXPECTED_HASH_SHIRKNEKO}, // ShirkNeko/SukiSU
|
||||
#ifdef EXPECTED_SIZE
|
||||
{EXPECTED_SIZE, EXPECTED_HASH}, // Custom
|
||||
#endif
|
||||
};
|
||||
|
||||
static struct sdesc *init_sdesc(struct crypto_shash *alg)
|
||||
{
|
||||
struct sdesc *sdesc;
|
||||
int size;
|
||||
|
||||
size = sizeof(struct shash_desc) + crypto_shash_descsize(alg);
|
||||
sdesc = kmalloc(size, GFP_KERNEL);
|
||||
if (!sdesc)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
sdesc->shash.tfm = alg;
|
||||
return sdesc;
|
||||
}
|
||||
|
||||
static int calc_hash(struct crypto_shash *alg, const unsigned char *data,
|
||||
unsigned int datalen, unsigned char *digest)
|
||||
{
|
||||
struct sdesc *sdesc;
|
||||
int ret;
|
||||
|
||||
sdesc = init_sdesc(alg);
|
||||
if (IS_ERR(sdesc)) {
|
||||
pr_info("can't alloc sdesc\n");
|
||||
return PTR_ERR(sdesc);
|
||||
}
|
||||
|
||||
ret = crypto_shash_digest(&sdesc->shash, data, datalen, digest);
|
||||
kfree(sdesc);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ksu_sha256(const unsigned char *data, unsigned int datalen,
|
||||
unsigned char *digest)
|
||||
{
|
||||
struct crypto_shash *alg;
|
||||
char *hash_alg_name = "sha256";
|
||||
int ret;
|
||||
|
||||
alg = crypto_alloc_shash(hash_alg_name, 0, 0);
|
||||
if (IS_ERR(alg)) {
|
||||
pr_info("can't alloc alg %s\n", hash_alg_name);
|
||||
return PTR_ERR(alg);
|
||||
}
|
||||
ret = calc_hash(alg, data, datalen, digest);
|
||||
crypto_free_shash(alg);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static struct dynamic_sign_key dynamic_sign = DYNAMIC_SIGN_DEFAULT_CONFIG;
|
||||
|
||||
static bool check_dynamic_sign(struct file *fp, u32 size4, loff_t *pos, int *matched_index)
|
||||
{
|
||||
struct dynamic_sign_key current_dynamic_key = dynamic_sign;
|
||||
|
||||
if (ksu_get_dynamic_manager_config(¤t_dynamic_key.size, ¤t_dynamic_key.hash)) {
|
||||
pr_debug("Using dynamic manager config: size=0x%x, hash=%.16s...\n",
|
||||
current_dynamic_key.size, current_dynamic_key.hash);
|
||||
}
|
||||
|
||||
if (size4 != current_dynamic_key.size) {
|
||||
return false;
|
||||
}
|
||||
|
||||
#define CERT_MAX_LENGTH 1024
|
||||
char cert[CERT_MAX_LENGTH];
|
||||
if (size4 > CERT_MAX_LENGTH) {
|
||||
pr_info("cert length overlimit\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
ksu_kernel_read_compat(fp, cert, size4, pos);
|
||||
|
||||
unsigned char digest[SHA256_DIGEST_SIZE];
|
||||
if (ksu_sha256(cert, size4, digest) < 0) {
|
||||
pr_info("sha256 error\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
char hash_str[SHA256_DIGEST_SIZE * 2 + 1];
|
||||
hash_str[SHA256_DIGEST_SIZE * 2] = '\0';
|
||||
bin2hex(hash_str, digest, SHA256_DIGEST_SIZE);
|
||||
|
||||
pr_info("sha256: %s, expected: %s, index: dynamic\n", hash_str, current_dynamic_key.hash);
|
||||
|
||||
if (strcmp(current_dynamic_key.hash, hash_str) == 0) {
|
||||
if (matched_index) {
|
||||
*matched_index = DYNAMIC_SIGN_INDEX;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool check_block(struct file *fp, u32 *size4, loff_t *pos, u32 *offset, int *matched_index)
|
||||
{
|
||||
int i;
|
||||
struct apk_sign_key sign_key;
|
||||
bool signature_valid = false;
|
||||
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // signer-sequence length
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // signer length
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // signed data length
|
||||
|
||||
*offset += 0x4 * 3;
|
||||
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // digests-sequence length
|
||||
|
||||
*pos += *size4;
|
||||
*offset += 0x4 + *size4;
|
||||
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // certificates length
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // certificate length
|
||||
*offset += 0x4 * 2;
|
||||
|
||||
if (ksu_is_dynamic_manager_enabled()) {
|
||||
loff_t temp_pos = *pos;
|
||||
if (check_dynamic_sign(fp, *size4, &temp_pos, matched_index)) {
|
||||
*pos = temp_pos;
|
||||
*offset += *size4;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(apk_sign_keys); i++) {
|
||||
sign_key = apk_sign_keys[i];
|
||||
|
||||
if (*size4 != sign_key.size)
|
||||
continue;
|
||||
*offset += *size4;
|
||||
|
||||
#define CERT_MAX_LENGTH 1024
|
||||
char cert[CERT_MAX_LENGTH];
|
||||
if (*size4 > CERT_MAX_LENGTH) {
|
||||
pr_info("cert length overlimit\n");
|
||||
return false;
|
||||
}
|
||||
ksu_kernel_read_compat(fp, cert, *size4, pos);
|
||||
unsigned char digest[SHA256_DIGEST_SIZE];
|
||||
if (IS_ERR(ksu_sha256(cert, *size4, digest))) {
|
||||
pr_info("sha256 error\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
char hash_str[SHA256_DIGEST_SIZE * 2 + 1];
|
||||
hash_str[SHA256_DIGEST_SIZE * 2] = '\0';
|
||||
|
||||
bin2hex(hash_str, digest, SHA256_DIGEST_SIZE);
|
||||
pr_info("sha256: %s, expected: %s, index: %d\n", hash_str, sign_key.sha256, i);
|
||||
|
||||
if (strcmp(sign_key.sha256, hash_str) == 0) {
|
||||
signature_valid = true;
|
||||
if (matched_index) {
|
||||
*matched_index = i;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
return signature_valid;
|
||||
}
|
||||
|
||||
struct zip_entry_header {
|
||||
uint32_t signature;
|
||||
uint16_t version;
|
||||
uint16_t flags;
|
||||
uint16_t compression;
|
||||
uint16_t mod_time;
|
||||
uint16_t mod_date;
|
||||
uint32_t crc32;
|
||||
uint32_t compressed_size;
|
||||
uint32_t uncompressed_size;
|
||||
uint16_t file_name_length;
|
||||
uint16_t extra_field_length;
|
||||
} __attribute__((packed));
|
||||
|
||||
// This is a necessary but not sufficient condition, but it is enough for us
|
||||
static bool has_v1_signature_file(struct file *fp)
|
||||
{
|
||||
struct zip_entry_header header;
|
||||
const char MANIFEST[] = "META-INF/MANIFEST.MF";
|
||||
|
||||
loff_t pos = 0;
|
||||
|
||||
while (ksu_kernel_read_compat(fp, &header,
|
||||
sizeof(struct zip_entry_header), &pos) ==
|
||||
sizeof(struct zip_entry_header)) {
|
||||
if (header.signature != 0x04034b50) {
|
||||
// ZIP magic: 'PK'
|
||||
return false;
|
||||
}
|
||||
// Read the entry file name
|
||||
if (header.file_name_length == sizeof(MANIFEST) - 1) {
|
||||
char fileName[sizeof(MANIFEST)];
|
||||
ksu_kernel_read_compat(fp, fileName,
|
||||
header.file_name_length, &pos);
|
||||
fileName[header.file_name_length] = '\0';
|
||||
|
||||
// Check if the entry matches META-INF/MANIFEST.MF
|
||||
if (strncmp(MANIFEST, fileName, sizeof(MANIFEST) - 1) == 0) {
|
||||
return true;
|
||||
}
|
||||
} else {
|
||||
// Skip the entry file name
|
||||
pos += header.file_name_length;
|
||||
}
|
||||
|
||||
// Skip to the next entry
|
||||
pos += header.extra_field_length + header.compressed_size;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static __always_inline bool check_v2_signature(char *path, bool check_multi_manager, int *signature_index)
|
||||
{
|
||||
unsigned char buffer[0x11] = { 0 };
|
||||
u32 size4;
|
||||
u64 size8, size_of_block;
|
||||
loff_t pos;
|
||||
bool v2_signing_valid = false;
|
||||
int v2_signing_blocks = 0;
|
||||
bool v3_signing_exist = false;
|
||||
bool v3_1_signing_exist = false;
|
||||
int matched_index = -1;
|
||||
int i;
|
||||
struct file *fp = ksu_filp_open_compat(path, O_RDONLY, 0);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("open %s error.\n", path);
|
||||
return false;
|
||||
}
|
||||
|
||||
// If you want to check for multi-manager APK signing, but dynamic managering is not enabled, skip
|
||||
if (check_multi_manager && !ksu_is_dynamic_manager_enabled()) {
|
||||
filp_close(fp, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// disable inotify for this file
|
||||
fp->f_mode |= FMODE_NONOTIFY;
|
||||
|
||||
// https://en.wikipedia.org/wiki/Zip_(file_format)#End_of_central_directory_record_(EOCD)
|
||||
for (i = 0;; ++i) {
|
||||
unsigned short n;
|
||||
pos = generic_file_llseek(fp, -i - 2, SEEK_END);
|
||||
ksu_kernel_read_compat(fp, &n, 2, &pos);
|
||||
if (n == i) {
|
||||
pos -= 22;
|
||||
ksu_kernel_read_compat(fp, &size4, 4, &pos);
|
||||
if ((size4 ^ 0xcafebabeu) == 0xccfbf1eeu) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (i == 0xffff) {
|
||||
pr_info("error: cannot find eocd\n");
|
||||
goto clean;
|
||||
}
|
||||
}
|
||||
|
||||
pos += 12;
|
||||
// offset
|
||||
ksu_kernel_read_compat(fp, &size4, 0x4, &pos);
|
||||
pos = size4 - 0x18;
|
||||
|
||||
ksu_kernel_read_compat(fp, &size8, 0x8, &pos);
|
||||
ksu_kernel_read_compat(fp, buffer, 0x10, &pos);
|
||||
if (strcmp((char *)buffer, "APK Sig Block 42")) {
|
||||
goto clean;
|
||||
}
|
||||
|
||||
pos = size4 - (size8 + 0x8);
|
||||
ksu_kernel_read_compat(fp, &size_of_block, 0x8, &pos);
|
||||
if (size_of_block != size8) {
|
||||
goto clean;
|
||||
}
|
||||
|
||||
int loop_count = 0;
|
||||
while (loop_count++ < 10) {
|
||||
uint32_t id;
|
||||
uint32_t offset;
|
||||
ksu_kernel_read_compat(fp, &size8, 0x8,
|
||||
&pos); // sequence length
|
||||
if (size8 == size_of_block) {
|
||||
break;
|
||||
}
|
||||
ksu_kernel_read_compat(fp, &id, 0x4, &pos); // id
|
||||
offset = 4;
|
||||
if (id == 0x7109871au) {
|
||||
v2_signing_blocks++;
|
||||
bool result = check_block(fp, &size4, &pos, &offset, &matched_index);
|
||||
if (result) {
|
||||
v2_signing_valid = true;
|
||||
}
|
||||
} else if (id == 0xf05368c0u) {
|
||||
// http://aospxref.com/android-14.0.0_r2/xref/frameworks/base/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java#73
|
||||
v3_signing_exist = true;
|
||||
} else if (id == 0x1b93ad61u) {
|
||||
// http://aospxref.com/android-14.0.0_r2/xref/frameworks/base/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java#74
|
||||
v3_1_signing_exist = true;
|
||||
} else {
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_info("Unknown id: 0x%08x\n", id);
|
||||
#endif
|
||||
}
|
||||
pos += (size8 - offset);
|
||||
}
|
||||
|
||||
if (v2_signing_blocks != 1) {
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_err("Unexpected v2 signature count: %d\n",
|
||||
v2_signing_blocks);
|
||||
#endif
|
||||
v2_signing_valid = false;
|
||||
}
|
||||
|
||||
if (v2_signing_valid) {
|
||||
int has_v1_signing = has_v1_signature_file(fp);
|
||||
if (has_v1_signing) {
|
||||
pr_err("Unexpected v1 signature scheme found!\n");
|
||||
filp_close(fp, 0);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
clean:
|
||||
filp_close(fp, 0);
|
||||
|
||||
if (v3_signing_exist || v3_1_signing_exist) {
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_err("Unexpected v3 signature scheme found!\n");
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
|
||||
if (v2_signing_valid) {
|
||||
if (signature_index) {
|
||||
*signature_index = matched_index;
|
||||
}
|
||||
|
||||
if (check_multi_manager) {
|
||||
// 0: ShirkNeko/SukiSU, DYNAMIC_SIGN_INDEX : Dynamic Sign
|
||||
if (matched_index == 0 || matched_index == DYNAMIC_SIGN_INDEX) {
|
||||
pr_info("Multi-manager APK detected (dynamic_manager enabled): signature_index=%d\n", matched_index);
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
} else {
|
||||
// Common manager check: any valid signature will do
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
|
||||
int ksu_debug_manager_uid = -1;
|
||||
|
||||
#include "manager.h"
|
||||
|
||||
static int set_expected_size(const char *val, const struct kernel_param *kp)
|
||||
{
|
||||
int rv = param_set_uint(val, kp);
|
||||
ksu_set_manager_uid(ksu_debug_manager_uid);
|
||||
pr_info("ksu_manager_uid set to %d\n", ksu_debug_manager_uid);
|
||||
return rv;
|
||||
}
|
||||
|
||||
static struct kernel_param_ops expected_size_ops = {
|
||||
.set = set_expected_size,
|
||||
.get = param_get_uint,
|
||||
};
|
||||
|
||||
module_param_cb(ksu_debug_manager_uid, &expected_size_ops,
|
||||
&ksu_debug_manager_uid, S_IRUSR | S_IWUSR);
|
||||
|
||||
#endif
|
||||
|
||||
bool is_manager_apk(char *path)
|
||||
{
|
||||
return check_v2_signature(path, false, NULL);
|
||||
}
|
||||
|
||||
bool is_dynamic_manager_apk(char *path, int *signature_index)
|
||||
{
|
||||
return check_v2_signature(path, true, signature_index);
|
||||
}
|
||||
11
kernel/apk_sign.h
Normal file
11
kernel/apk_sign.h
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
#ifndef __KSU_H_APK_V2_SIGN
|
||||
#define __KSU_H_APK_V2_SIGN
|
||||
|
||||
#include <linux/types.h>
|
||||
#include "ksu.h"
|
||||
|
||||
bool is_manager_apk(char *path);
|
||||
|
||||
bool is_dynamic_manager_apk(char *path, int *signature_index);
|
||||
|
||||
#endif
|
||||
72
kernel/arch.h
Normal file
72
kernel/arch.h
Normal file
|
|
@ -0,0 +1,72 @@
|
|||
#ifndef __KSU_H_ARCH
|
||||
#define __KSU_H_ARCH
|
||||
|
||||
#include <linux/version.h>
|
||||
|
||||
#if defined(__aarch64__)
|
||||
|
||||
#define __PT_PARM1_REG regs[0]
|
||||
#define __PT_PARM2_REG regs[1]
|
||||
#define __PT_PARM3_REG regs[2]
|
||||
#define __PT_SYSCALL_PARM4_REG regs[3]
|
||||
#define __PT_CCALL_PARM4_REG regs[3]
|
||||
#define __PT_PARM5_REG regs[4]
|
||||
#define __PT_PARM6_REG regs[5]
|
||||
#define __PT_RET_REG regs[30]
|
||||
#define __PT_FP_REG regs[29] /* Works only with CONFIG_FRAME_POINTER */
|
||||
#define __PT_RC_REG regs[0]
|
||||
#define __PT_SP_REG sp
|
||||
#define __PT_IP_REG pc
|
||||
|
||||
#define PRCTL_SYMBOL "__arm64_sys_prctl"
|
||||
#define SYS_READ_SYMBOL "__arm64_sys_read"
|
||||
#define SYS_NEWFSTATAT_SYMBOL "__arm64_sys_newfstatat"
|
||||
#define SYS_FACCESSAT_SYMBOL "__arm64_sys_faccessat"
|
||||
#define SYS_EXECVE_SYMBOL "__arm64_sys_execve"
|
||||
|
||||
#elif defined(__x86_64__)
|
||||
|
||||
#define __PT_PARM1_REG di
|
||||
#define __PT_PARM2_REG si
|
||||
#define __PT_PARM3_REG dx
|
||||
/* syscall uses r10 for PARM4 */
|
||||
#define __PT_SYSCALL_PARM4_REG r10
|
||||
#define __PT_CCALL_PARM4_REG cx
|
||||
#define __PT_PARM5_REG r8
|
||||
#define __PT_PARM6_REG r9
|
||||
#define __PT_RET_REG sp
|
||||
#define __PT_FP_REG bp
|
||||
#define __PT_RC_REG ax
|
||||
#define __PT_SP_REG sp
|
||||
#define __PT_IP_REG ip
|
||||
#define PRCTL_SYMBOL "__x64_sys_prctl"
|
||||
#define SYS_READ_SYMBOL "__x64_sys_read"
|
||||
#define SYS_NEWFSTATAT_SYMBOL "__x64_sys_newfstatat"
|
||||
#define SYS_FACCESSAT_SYMBOL "__x64_sys_faccessat"
|
||||
#define SYS_EXECVE_SYMBOL "__x64_sys_execve"
|
||||
|
||||
#else
|
||||
#error "Unsupported arch"
|
||||
#endif
|
||||
|
||||
/* allow some architecutres to override `struct pt_regs` */
|
||||
#ifndef __PT_REGS_CAST
|
||||
#define __PT_REGS_CAST(x) (x)
|
||||
#endif
|
||||
|
||||
#define PT_REGS_PARM1(x) (__PT_REGS_CAST(x)->__PT_PARM1_REG)
|
||||
#define PT_REGS_PARM2(x) (__PT_REGS_CAST(x)->__PT_PARM2_REG)
|
||||
#define PT_REGS_PARM3(x) (__PT_REGS_CAST(x)->__PT_PARM3_REG)
|
||||
#define PT_REGS_SYSCALL_PARM4(x) (__PT_REGS_CAST(x)->__PT_SYSCALL_PARM4_REG)
|
||||
#define PT_REGS_CCALL_PARM4(x) (__PT_REGS_CAST(x)->__PT_CCALL_PARM4_REG)
|
||||
#define PT_REGS_PARM5(x) (__PT_REGS_CAST(x)->__PT_PARM5_REG)
|
||||
#define PT_REGS_PARM6(x) (__PT_REGS_CAST(x)->__PT_PARM6_REG)
|
||||
#define PT_REGS_RET(x) (__PT_REGS_CAST(x)->__PT_RET_REG)
|
||||
#define PT_REGS_FP(x) (__PT_REGS_CAST(x)->__PT_FP_REG)
|
||||
#define PT_REGS_RC(x) (__PT_REGS_CAST(x)->__PT_RC_REG)
|
||||
#define PT_REGS_SP(x) (__PT_REGS_CAST(x)->__PT_SP_REG)
|
||||
#define PT_REGS_IP(x) (__PT_REGS_CAST(x)->__PT_IP_REG)
|
||||
|
||||
#define PT_REAL_REGS(regs) ((struct pt_regs *)PT_REGS_PARM1(regs))
|
||||
|
||||
#endif
|
||||
1092
kernel/core_hook.c
Normal file
1092
kernel/core_hook.c
Normal file
File diff suppressed because it is too large
Load diff
10
kernel/core_hook.h
Normal file
10
kernel/core_hook.h
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
#ifndef __KSU_H_KSU_CORE
|
||||
#define __KSU_H_KSU_CORE
|
||||
|
||||
#include <linux/init.h>
|
||||
#include "apk_sign.h"
|
||||
|
||||
void __init ksu_core_init(void);
|
||||
void ksu_core_exit(void);
|
||||
|
||||
#endif
|
||||
505
kernel/dynamic_manager.c
Normal file
505
kernel/dynamic_manager.c
Normal file
|
|
@ -0,0 +1,505 @@
|
|||
#include <linux/err.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/gfp.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/workqueue.h>
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
#include <linux/moduleparam.h>
|
||||
#endif
|
||||
#include <crypto/hash.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 11, 0)
|
||||
#include <crypto/sha2.h>
|
||||
#else
|
||||
#include <crypto/sha.h>
|
||||
#endif
|
||||
|
||||
#include "dynamic_manager.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "kernel_compat.h"
|
||||
#include "manager.h"
|
||||
|
||||
#define MAX_MANAGERS 2
|
||||
|
||||
// Dynamic sign configuration
|
||||
static struct dynamic_manager_config dynamic_manager = {
|
||||
.size = 0x300,
|
||||
.hash = "0000000000000000000000000000000000000000000000000000000000000000",
|
||||
.is_set = 0
|
||||
};
|
||||
|
||||
// Multi-manager state
|
||||
static struct manager_info active_managers[MAX_MANAGERS];
|
||||
static DEFINE_SPINLOCK(managers_lock);
|
||||
static DEFINE_SPINLOCK(dynamic_manager_lock);
|
||||
|
||||
// Work queues for persistent storage
|
||||
static struct work_struct save_dynamic_manager_work;
|
||||
static struct work_struct load_dynamic_manager_work;
|
||||
static struct work_struct clear_dynamic_manager_work;
|
||||
|
||||
bool ksu_is_dynamic_manager_enabled(void)
|
||||
{
|
||||
unsigned long flags;
|
||||
bool enabled;
|
||||
|
||||
spin_lock_irqsave(&dynamic_manager_lock, flags);
|
||||
enabled = dynamic_manager.is_set;
|
||||
spin_unlock_irqrestore(&dynamic_manager_lock, flags);
|
||||
|
||||
return enabled;
|
||||
}
|
||||
|
||||
void ksu_add_manager(uid_t uid, int signature_index)
|
||||
{
|
||||
unsigned long flags;
|
||||
int i;
|
||||
|
||||
if (!ksu_is_dynamic_manager_enabled()) {
|
||||
pr_info("Dynamic sign not enabled, skipping multi-manager add\n");
|
||||
return;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&managers_lock, flags);
|
||||
|
||||
// Check if manager already exists and update
|
||||
for (i = 0; i < MAX_MANAGERS; i++) {
|
||||
if (active_managers[i].is_active && active_managers[i].uid == uid) {
|
||||
active_managers[i].signature_index = signature_index;
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
pr_info("Updated manager uid=%d, signature_index=%d\n", uid, signature_index);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
// Find free slot for new manager
|
||||
for (i = 0; i < MAX_MANAGERS; i++) {
|
||||
if (!active_managers[i].is_active) {
|
||||
active_managers[i].uid = uid;
|
||||
active_managers[i].signature_index = signature_index;
|
||||
active_managers[i].is_active = true;
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
pr_info("Added manager uid=%d, signature_index=%d\n", uid, signature_index);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
pr_warn("Failed to add manager, no free slots\n");
|
||||
}
|
||||
|
||||
void ksu_remove_manager(uid_t uid)
|
||||
{
|
||||
unsigned long flags;
|
||||
int i;
|
||||
|
||||
if (!ksu_is_dynamic_manager_enabled()) {
|
||||
return;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&managers_lock, flags);
|
||||
|
||||
for (i = 0; i < MAX_MANAGERS; i++) {
|
||||
if (active_managers[i].is_active && active_managers[i].uid == uid) {
|
||||
active_managers[i].is_active = false;
|
||||
pr_info("Removed manager uid=%d\n", uid);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
}
|
||||
|
||||
bool ksu_is_any_manager(uid_t uid)
|
||||
{
|
||||
unsigned long flags;
|
||||
bool is_manager = false;
|
||||
int i;
|
||||
|
||||
if (!ksu_is_dynamic_manager_enabled()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&managers_lock, flags);
|
||||
|
||||
for (i = 0; i < MAX_MANAGERS; i++) {
|
||||
if (active_managers[i].is_active && active_managers[i].uid == uid) {
|
||||
is_manager = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
return is_manager;
|
||||
}
|
||||
|
||||
int ksu_get_manager_signature_index(uid_t uid)
|
||||
{
|
||||
unsigned long flags;
|
||||
int signature_index = -1;
|
||||
int i;
|
||||
|
||||
// Check traditional manager first
|
||||
if (ksu_manager_uid != KSU_INVALID_UID && uid == ksu_manager_uid) {
|
||||
return DYNAMIC_SIGN_INDEX;
|
||||
}
|
||||
|
||||
if (!ksu_is_dynamic_manager_enabled()) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&managers_lock, flags);
|
||||
|
||||
for (i = 0; i < MAX_MANAGERS; i++) {
|
||||
if (active_managers[i].is_active && active_managers[i].uid == uid) {
|
||||
signature_index = active_managers[i].signature_index;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
return signature_index;
|
||||
}
|
||||
|
||||
static void clear_dynamic_manager(void)
|
||||
{
|
||||
unsigned long flags;
|
||||
int i;
|
||||
|
||||
spin_lock_irqsave(&managers_lock, flags);
|
||||
|
||||
for (i = 0; i < MAX_MANAGERS; i++) {
|
||||
if (active_managers[i].is_active) {
|
||||
pr_info("Clearing dynamic manager uid=%d (signature_index=%d) for rescan\n",
|
||||
active_managers[i].uid, active_managers[i].signature_index);
|
||||
active_managers[i].is_active = false;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
}
|
||||
|
||||
int ksu_get_active_managers(struct manager_list_info *info)
|
||||
{
|
||||
unsigned long flags;
|
||||
int i, count = 0;
|
||||
|
||||
if (!info) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
// Add traditional manager first
|
||||
if (ksu_manager_uid != KSU_INVALID_UID && count < 2) {
|
||||
info->managers[count].uid = ksu_manager_uid;
|
||||
info->managers[count].signature_index = 0;
|
||||
count++;
|
||||
}
|
||||
|
||||
// Add dynamic managers
|
||||
if (ksu_is_dynamic_manager_enabled()) {
|
||||
spin_lock_irqsave(&managers_lock, flags);
|
||||
|
||||
for (i = 0; i < MAX_MANAGERS && count < 2; i++) {
|
||||
if (active_managers[i].is_active) {
|
||||
info->managers[count].uid = active_managers[i].uid;
|
||||
info->managers[count].signature_index = active_managers[i].signature_index;
|
||||
count++;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&managers_lock, flags);
|
||||
}
|
||||
|
||||
info->count = count;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void do_save_dynamic_manager(struct work_struct *work)
|
||||
{
|
||||
u32 magic = DYNAMIC_MANAGER_FILE_MAGIC;
|
||||
u32 version = DYNAMIC_MANAGER_FILE_VERSION;
|
||||
struct dynamic_manager_config config_to_save;
|
||||
loff_t off = 0;
|
||||
unsigned long flags;
|
||||
struct file *fp;
|
||||
|
||||
spin_lock_irqsave(&dynamic_manager_lock, flags);
|
||||
config_to_save = dynamic_manager;
|
||||
spin_unlock_irqrestore(&dynamic_manager_lock, flags);
|
||||
|
||||
if (!config_to_save.is_set) {
|
||||
pr_info("Dynamic sign config not set, skipping save\n");
|
||||
return;
|
||||
}
|
||||
|
||||
fp = ksu_filp_open_compat(KERNEL_SU_DYNAMIC_MANAGER, O_WRONLY | O_CREAT | O_TRUNC, 0644);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("save_dynamic_manager create file failed: %ld\n", PTR_ERR(fp));
|
||||
return;
|
||||
}
|
||||
|
||||
if (ksu_kernel_write_compat(fp, &magic, sizeof(magic), &off) != sizeof(magic)) {
|
||||
pr_err("save_dynamic_manager write magic failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ksu_kernel_write_compat(fp, &version, sizeof(version), &off) != sizeof(version)) {
|
||||
pr_err("save_dynamic_manager write version failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ksu_kernel_write_compat(fp, &config_to_save, sizeof(config_to_save), &off) != sizeof(config_to_save)) {
|
||||
pr_err("save_dynamic_manager write config failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
pr_info("Dynamic sign config saved successfully\n");
|
||||
|
||||
exit:
|
||||
filp_close(fp, 0);
|
||||
}
|
||||
|
||||
static void do_load_dynamic_manager(struct work_struct *work)
|
||||
{
|
||||
loff_t off = 0;
|
||||
ssize_t ret = 0;
|
||||
struct file *fp = NULL;
|
||||
u32 magic;
|
||||
u32 version;
|
||||
struct dynamic_manager_config loaded_config;
|
||||
unsigned long flags;
|
||||
int i;
|
||||
|
||||
fp = ksu_filp_open_compat(KERNEL_SU_DYNAMIC_MANAGER, O_RDONLY, 0);
|
||||
if (IS_ERR(fp)) {
|
||||
if (PTR_ERR(fp) == -ENOENT) {
|
||||
pr_info("No saved dynamic manager config found\n");
|
||||
} else {
|
||||
pr_err("load_dynamic_manager open file failed: %ld\n", PTR_ERR(fp));
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (ksu_kernel_read_compat(fp, &magic, sizeof(magic), &off) != sizeof(magic) ||
|
||||
magic != DYNAMIC_MANAGER_FILE_MAGIC) {
|
||||
pr_err("dynamic manager file invalid magic: %x!\n", magic);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ksu_kernel_read_compat(fp, &version, sizeof(version), &off) != sizeof(version)) {
|
||||
pr_err("dynamic manager read version failed\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
pr_info("dynamic manager file version: %d\n", version);
|
||||
|
||||
ret = ksu_kernel_read_compat(fp, &loaded_config, sizeof(loaded_config), &off);
|
||||
if (ret <= 0) {
|
||||
pr_info("load_dynamic_manager read err: %zd\n", ret);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ret != sizeof(loaded_config)) {
|
||||
pr_err("load_dynamic_manager read incomplete config: %zd/%zu\n", ret, sizeof(loaded_config));
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (loaded_config.size < 0x100 || loaded_config.size > 0x1000) {
|
||||
pr_err("Invalid saved config size: 0x%x\n", loaded_config.size);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (strlen(loaded_config.hash) != 64) {
|
||||
pr_err("Invalid saved config hash length: %zu\n", strlen(loaded_config.hash));
|
||||
goto exit;
|
||||
}
|
||||
|
||||
// Validate hash format
|
||||
for (i = 0; i < 64; i++) {
|
||||
char c = loaded_config.hash[i];
|
||||
if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f'))) {
|
||||
pr_err("Invalid saved config hash character at position %d: %c\n", i, c);
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&dynamic_manager_lock, flags);
|
||||
dynamic_manager = loaded_config;
|
||||
spin_unlock_irqrestore(&dynamic_manager_lock, flags);
|
||||
|
||||
pr_info("Dynamic sign config loaded: size=0x%x, hash=%.16s...\n",
|
||||
loaded_config.size, loaded_config.hash);
|
||||
|
||||
exit:
|
||||
filp_close(fp, 0);
|
||||
}
|
||||
|
||||
static bool persistent_dynamic_manager(void)
|
||||
{
|
||||
return ksu_queue_work(&save_dynamic_manager_work);
|
||||
}
|
||||
|
||||
static void do_clear_dynamic_manager(struct work_struct *work)
|
||||
{
|
||||
loff_t off = 0;
|
||||
struct file *fp;
|
||||
char zero_buffer[512];
|
||||
|
||||
memset(zero_buffer, 0, sizeof(zero_buffer));
|
||||
|
||||
fp = ksu_filp_open_compat(KERNEL_SU_DYNAMIC_MANAGER, O_WRONLY | O_CREAT | O_TRUNC, 0644);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("clear_dynamic_manager create file failed: %ld\n", PTR_ERR(fp));
|
||||
return;
|
||||
}
|
||||
|
||||
// Write null bytes to overwrite the file content
|
||||
if (ksu_kernel_write_compat(fp, zero_buffer, sizeof(zero_buffer), &off) != sizeof(zero_buffer)) {
|
||||
pr_err("clear_dynamic_manager write null bytes failed.\n");
|
||||
} else {
|
||||
pr_info("Dynamic sign config file cleared successfully\n");
|
||||
}
|
||||
|
||||
filp_close(fp, 0);
|
||||
}
|
||||
|
||||
static bool clear_dynamic_manager_file(void)
|
||||
{
|
||||
return ksu_queue_work(&clear_dynamic_manager_work);
|
||||
}
|
||||
|
||||
int ksu_handle_dynamic_manager(struct dynamic_manager_user_config *config)
|
||||
{
|
||||
unsigned long flags;
|
||||
int ret = 0;
|
||||
int i;
|
||||
|
||||
if (!config) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
switch (config->operation) {
|
||||
case DYNAMIC_MANAGER_OP_SET:
|
||||
if (config->size < 0x100 || config->size > 0x1000) {
|
||||
pr_err("invalid size: 0x%x\n", config->size);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (strlen(config->hash) != 64) {
|
||||
pr_err("invalid hash length: %zu\n", strlen(config->hash));
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
// Validate hash format
|
||||
for (i = 0; i < 64; i++) {
|
||||
char c = config->hash[i];
|
||||
if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f'))) {
|
||||
pr_err("invalid hash character at position %d: %c\n", i, c);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&dynamic_manager_lock, flags);
|
||||
dynamic_manager.size = config->size;
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 13, 0)
|
||||
strscpy(dynamic_manager.hash, config->hash, sizeof(dynamic_manager.hash));
|
||||
#else
|
||||
strlcpy(dynamic_manager.hash, config->hash, sizeof(dynamic_manager.hash));
|
||||
#endif
|
||||
dynamic_manager.is_set = 1;
|
||||
spin_unlock_irqrestore(&dynamic_manager_lock, flags);
|
||||
|
||||
persistent_dynamic_manager();
|
||||
pr_info("dynamic manager updated: size=0x%x, hash=%.16s... (multi-manager enabled)\n",
|
||||
config->size, config->hash);
|
||||
break;
|
||||
|
||||
case DYNAMIC_MANAGER_OP_GET:
|
||||
spin_lock_irqsave(&dynamic_manager_lock, flags);
|
||||
if (dynamic_manager.is_set) {
|
||||
config->size = dynamic_manager.size;
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 13, 0)
|
||||
strscpy(config->hash, dynamic_manager.hash, sizeof(config->hash));
|
||||
#else
|
||||
strlcpy(config->hash, dynamic_manager.hash, sizeof(config->hash));
|
||||
#endif
|
||||
ret = 0;
|
||||
} else {
|
||||
ret = -ENODATA;
|
||||
}
|
||||
spin_unlock_irqrestore(&dynamic_manager_lock, flags);
|
||||
break;
|
||||
|
||||
case DYNAMIC_MANAGER_OP_CLEAR:
|
||||
spin_lock_irqsave(&dynamic_manager_lock, flags);
|
||||
dynamic_manager.size = 0x300;
|
||||
strcpy(dynamic_manager.hash, "0000000000000000000000000000000000000000000000000000000000000000");
|
||||
dynamic_manager.is_set = 0;
|
||||
spin_unlock_irqrestore(&dynamic_manager_lock, flags);
|
||||
|
||||
// Clear only dynamic managers, preserve default manager
|
||||
clear_dynamic_manager();
|
||||
|
||||
// Clear file using the same method as save
|
||||
clear_dynamic_manager_file();
|
||||
|
||||
pr_info("Dynamic sign config cleared (multi-manager disabled)\n");
|
||||
break;
|
||||
|
||||
default:
|
||||
pr_err("Invalid dynamic manager operation: %d\n", config->operation);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool ksu_load_dynamic_manager(void)
|
||||
{
|
||||
return ksu_queue_work(&load_dynamic_manager_work);
|
||||
}
|
||||
|
||||
void ksu_dynamic_manager_init(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
INIT_WORK(&save_dynamic_manager_work, do_save_dynamic_manager);
|
||||
INIT_WORK(&load_dynamic_manager_work, do_load_dynamic_manager);
|
||||
INIT_WORK(&clear_dynamic_manager_work, do_clear_dynamic_manager);
|
||||
|
||||
// Initialize manager slots
|
||||
for (i = 0; i < MAX_MANAGERS; i++) {
|
||||
active_managers[i].is_active = false;
|
||||
}
|
||||
|
||||
ksu_load_dynamic_manager();
|
||||
|
||||
pr_info("Dynamic sign initialized with conditional multi-manager support\n");
|
||||
}
|
||||
|
||||
void ksu_dynamic_manager_exit(void)
|
||||
{
|
||||
clear_dynamic_manager();
|
||||
|
||||
// Save current config before exit
|
||||
do_save_dynamic_manager(NULL);
|
||||
pr_info("Dynamic sign exited with persistent storage\n");
|
||||
}
|
||||
|
||||
// Get dynamic manager configuration for signature verification
|
||||
bool ksu_get_dynamic_manager_config(unsigned int *size, const char **hash)
|
||||
{
|
||||
unsigned long flags;
|
||||
bool valid = false;
|
||||
|
||||
spin_lock_irqsave(&dynamic_manager_lock, flags);
|
||||
if (dynamic_manager.is_set) {
|
||||
if (size) *size = dynamic_manager.size;
|
||||
if (hash) *hash = dynamic_manager.hash;
|
||||
valid = true;
|
||||
}
|
||||
spin_unlock_irqrestore(&dynamic_manager_lock, flags);
|
||||
|
||||
return valid;
|
||||
}
|
||||
51
kernel/dynamic_manager.h
Normal file
51
kernel/dynamic_manager.h
Normal file
|
|
@ -0,0 +1,51 @@
|
|||
#ifndef __KSU_H_DYNAMIC_MANAGER
|
||||
#define __KSU_H_DYNAMIC_MANAGER
|
||||
|
||||
#include <linux/types.h>
|
||||
#include "ksu.h"
|
||||
|
||||
#define DYNAMIC_MANAGER_FILE_MAGIC 0x7f445347 // 'DSG', u32
|
||||
#define DYNAMIC_MANAGER_FILE_VERSION 1 // u32
|
||||
#define KERNEL_SU_DYNAMIC_MANAGER "/data/adb/ksu/.dynamic_manager"
|
||||
#define DYNAMIC_SIGN_INDEX 100
|
||||
|
||||
struct dynamic_sign_key {
|
||||
unsigned int size;
|
||||
const char *hash;
|
||||
};
|
||||
|
||||
#define DYNAMIC_SIGN_DEFAULT_CONFIG { \
|
||||
.size = 0x300, \
|
||||
.hash = "0000000000000000000000000000000000000000000000000000000000000000" \
|
||||
}
|
||||
|
||||
struct dynamic_manager_config {
|
||||
unsigned int size;
|
||||
char hash[65];
|
||||
int is_set;
|
||||
};
|
||||
|
||||
struct manager_info {
|
||||
uid_t uid;
|
||||
int signature_index;
|
||||
bool is_active;
|
||||
};
|
||||
|
||||
// Dynamic sign operations
|
||||
void ksu_dynamic_manager_init(void);
|
||||
void ksu_dynamic_manager_exit(void);
|
||||
int ksu_handle_dynamic_manager(struct dynamic_manager_user_config *config);
|
||||
bool ksu_load_dynamic_manager(void);
|
||||
bool ksu_is_dynamic_manager_enabled(void);
|
||||
|
||||
// Multi-manager operations
|
||||
void ksu_add_manager(uid_t uid, int signature_index);
|
||||
void ksu_remove_manager(uid_t uid);
|
||||
bool ksu_is_any_manager(uid_t uid);
|
||||
int ksu_get_manager_signature_index(uid_t uid);
|
||||
int ksu_get_active_managers(struct manager_list_info *info);
|
||||
|
||||
// Configuration access for signature verification
|
||||
bool ksu_get_dynamic_manager_config(unsigned int *size, const char **hash);
|
||||
|
||||
#endif
|
||||
5
kernel/embed_ksud.c
Normal file
5
kernel/embed_ksud.c
Normal file
|
|
@ -0,0 +1,5 @@
|
|||
// WARNING: THIS IS A STUB FILE
|
||||
// This file will be regenerated by CI
|
||||
|
||||
unsigned int ksud_size = 0;
|
||||
const char ksud[0] = {};
|
||||
2
kernel/export_symbol.txt
Normal file
2
kernel/export_symbol.txt
Normal file
|
|
@ -0,0 +1,2 @@
|
|||
register_kprobe
|
||||
unregister_kprobe
|
||||
28
kernel/include/ksu_hook.h
Normal file
28
kernel/include/ksu_hook.h
Normal file
|
|
@ -0,0 +1,28 @@
|
|||
#ifndef __KSU_H_KSHOOK
|
||||
#define __KSU_H_KSHOOK
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
// For sucompat
|
||||
|
||||
int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode,
|
||||
int *flags);
|
||||
|
||||
int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
|
||||
|
||||
// For ksud
|
||||
|
||||
int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
|
||||
size_t *count_ptr, loff_t **pos);
|
||||
|
||||
// For ksud and sucompat
|
||||
|
||||
int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
|
||||
void *envp, int *flags);
|
||||
|
||||
// For volume button
|
||||
int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code,
|
||||
int *value);
|
||||
|
||||
#endif
|
||||
94
kernel/kernel_compat.c
Normal file
94
kernel/kernel_compat.c
Normal file
|
|
@ -0,0 +1,94 @@
|
|||
#include <linux/version.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/nsproxy.h>
|
||||
#include <linux/sched/task.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "kernel_compat.h"
|
||||
|
||||
extern struct task_struct init_task;
|
||||
|
||||
// mnt_ns context switch for environment that android_init->nsproxy->mnt_ns != init_task.nsproxy->mnt_ns, such as WSA
|
||||
struct ksu_ns_fs_saved {
|
||||
struct nsproxy *ns;
|
||||
struct fs_struct *fs;
|
||||
};
|
||||
|
||||
static void ksu_save_ns_fs(struct ksu_ns_fs_saved *ns_fs_saved)
|
||||
{
|
||||
ns_fs_saved->ns = current->nsproxy;
|
||||
ns_fs_saved->fs = current->fs;
|
||||
}
|
||||
|
||||
static void ksu_load_ns_fs(struct ksu_ns_fs_saved *ns_fs_saved)
|
||||
{
|
||||
current->nsproxy = ns_fs_saved->ns;
|
||||
current->fs = ns_fs_saved->fs;
|
||||
}
|
||||
|
||||
static bool android_context_saved_checked = false;
|
||||
static bool android_context_saved_enabled = false;
|
||||
static struct ksu_ns_fs_saved android_context_saved;
|
||||
|
||||
void ksu_android_ns_fs_check()
|
||||
{
|
||||
if (android_context_saved_checked)
|
||||
return;
|
||||
android_context_saved_checked = true;
|
||||
task_lock(current);
|
||||
if (current->nsproxy && current->fs &&
|
||||
current->nsproxy->mnt_ns != init_task.nsproxy->mnt_ns) {
|
||||
android_context_saved_enabled = true;
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_info("android context saved enabled due to init mnt_ns(%p) != android mnt_ns(%p)\n",
|
||||
current->nsproxy->mnt_ns, init_task.nsproxy->mnt_ns);
|
||||
#endif
|
||||
ksu_save_ns_fs(&android_context_saved);
|
||||
} else {
|
||||
pr_info("android context saved disabled\n");
|
||||
}
|
||||
task_unlock(current);
|
||||
}
|
||||
|
||||
struct file *ksu_filp_open_compat(const char *filename, int flags, umode_t mode)
|
||||
{
|
||||
// switch mnt_ns even if current is not wq_worker, to ensure what we open is the correct file in android mnt_ns, rather than user created mnt_ns
|
||||
struct ksu_ns_fs_saved saved;
|
||||
if (android_context_saved_enabled) {
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_info("start switch current nsproxy and fs to android context\n");
|
||||
#endif
|
||||
task_lock(current);
|
||||
ksu_save_ns_fs(&saved);
|
||||
ksu_load_ns_fs(&android_context_saved);
|
||||
task_unlock(current);
|
||||
}
|
||||
struct file *fp = filp_open(filename, flags, mode);
|
||||
if (android_context_saved_enabled) {
|
||||
task_lock(current);
|
||||
ksu_load_ns_fs(&saved);
|
||||
task_unlock(current);
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_info("switch current nsproxy and fs back to saved successfully\n");
|
||||
#endif
|
||||
}
|
||||
return fp;
|
||||
}
|
||||
|
||||
ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
|
||||
loff_t *pos)
|
||||
{
|
||||
return kernel_read(p, buf, count, pos);
|
||||
}
|
||||
|
||||
ssize_t ksu_kernel_write_compat(struct file *p, const void *buf, size_t count,
|
||||
loff_t *pos)
|
||||
{
|
||||
return kernel_write(p, buf, count, pos);
|
||||
}
|
||||
|
||||
long ksu_strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
|
||||
long count)
|
||||
{
|
||||
return strncpy_from_user_nofault(dst, unsafe_addr, count);
|
||||
}
|
||||
80
kernel/kernel_compat.h
Normal file
80
kernel/kernel_compat.h
Normal file
|
|
@ -0,0 +1,80 @@
|
|||
#ifndef __KSU_H_KERNEL_COMPAT
|
||||
#define __KSU_H_KERNEL_COMPAT
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/version.h>
|
||||
#include "ss/policydb.h"
|
||||
#include "linux/key.h"
|
||||
|
||||
/**
|
||||
* list_count_nodes - count the number of nodes in a list
|
||||
* @head: the head of the list
|
||||
*
|
||||
* This function iterates over the list starting from @head and counts
|
||||
* the number of nodes in the list. It does not modify the list.
|
||||
*
|
||||
* Context: Any context. The function is safe to call in any context,
|
||||
* including interrupt context, as it does not sleep or allocate
|
||||
* memory.
|
||||
*
|
||||
* Return: the number of nodes in the list (excluding the head)
|
||||
*/
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 6, 0)
|
||||
static inline __maybe_unused size_t list_count_nodes(const struct list_head *head)
|
||||
{
|
||||
const struct list_head *pos;
|
||||
size_t count = 0;
|
||||
|
||||
if (!head)
|
||||
return 0;
|
||||
|
||||
list_for_each(pos, head)
|
||||
count++;
|
||||
|
||||
return count;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Adapt to Huawei HISI kernel without affecting other kernels ,
|
||||
* Huawei Hisi Kernel EBITMAP Enable or Disable Flag ,
|
||||
* From ss/ebitmap.h
|
||||
*/
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)) && \
|
||||
(LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)) || \
|
||||
(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)) && \
|
||||
(LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0))
|
||||
#ifdef HISI_SELINUX_EBITMAP_RO
|
||||
#define CONFIG_IS_HW_HISI
|
||||
#endif
|
||||
#endif
|
||||
|
||||
extern long ksu_strncpy_from_user_nofault(char *dst,
|
||||
const void __user *unsafe_addr,
|
||||
long count);
|
||||
|
||||
extern void ksu_android_ns_fs_check();
|
||||
extern struct file *ksu_filp_open_compat(const char *filename, int flags,
|
||||
umode_t mode);
|
||||
extern ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
|
||||
loff_t *pos);
|
||||
extern ssize_t ksu_kernel_write_compat(struct file *p, const void *buf,
|
||||
size_t count, loff_t *pos);
|
||||
/*
|
||||
* ksu_copy_from_user_retry
|
||||
* try nofault copy first, if it fails, try with plain
|
||||
* paramters are the same as copy_from_user
|
||||
* 0 = success
|
||||
*/
|
||||
static long ksu_copy_from_user_retry(void *to,
|
||||
const void __user *from, unsigned long count)
|
||||
{
|
||||
long ret = copy_from_user_nofault(to, from, count);
|
||||
if (likely(!ret))
|
||||
return ret;
|
||||
|
||||
// we faulted! fallback to slow path
|
||||
return copy_from_user(to, from, count);
|
||||
}
|
||||
|
||||
#endif
|
||||
11
kernel/klog.h
Normal file
11
kernel/klog.h
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
#ifndef __KSU_H_KLOG
|
||||
#define __KSU_H_KLOG
|
||||
|
||||
#include <linux/printk.h>
|
||||
|
||||
#ifdef pr_fmt
|
||||
#undef pr_fmt
|
||||
#define pr_fmt(fmt) "KernelSU: " fmt
|
||||
#endif
|
||||
|
||||
#endif
|
||||
6
kernel/kpm/Makefile
Normal file
6
kernel/kpm/Makefile
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
obj-y += kpm.o
|
||||
obj-y += compact.o
|
||||
obj-y += super_access.o
|
||||
|
||||
ccflags-y += -Wno-implicit-function-declaration -Wno-strict-prototypes -Wno-int-conversion -Wno-gcc-compat
|
||||
ccflags-y += -Wno-declaration-after-statement -Wno-unused-function
|
||||
100
kernel/kpm/compact.c
Normal file
100
kernel/kpm/compact.c
Normal file
|
|
@ -0,0 +1,100 @@
|
|||
#include <linux/export.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/kernfs.h>
|
||||
#include <linux/file.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/elf.h>
|
||||
#include <linux/kallsyms.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/rcupdate.h>
|
||||
#include <asm/elf.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/string.h>
|
||||
#include <asm/cacheflush.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/set_memory.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/slab.h>
|
||||
#include "kpm.h"
|
||||
#include "compact.h"
|
||||
#include "../allowlist.h"
|
||||
#include "../manager.h"
|
||||
|
||||
static int sukisu_is_su_allow_uid(uid_t uid)
|
||||
{
|
||||
return ksu_is_allow_uid(uid) ? 1 : 0;
|
||||
}
|
||||
|
||||
static int sukisu_get_ap_mod_exclude(uid_t uid)
|
||||
{
|
||||
return 0; /* Not supported */
|
||||
}
|
||||
|
||||
static int sukisu_is_uid_should_umount(uid_t uid)
|
||||
{
|
||||
return ksu_uid_should_umount(uid) ? 1 : 0;
|
||||
}
|
||||
|
||||
static int sukisu_is_current_uid_manager(void)
|
||||
{
|
||||
return is_manager();
|
||||
}
|
||||
|
||||
static uid_t sukisu_get_manager_uid(void)
|
||||
{
|
||||
return ksu_manager_uid;
|
||||
}
|
||||
|
||||
static void sukisu_set_manager_uid(uid_t uid, int force)
|
||||
{
|
||||
if (force || ksu_manager_uid == -1)
|
||||
ksu_manager_uid = uid;
|
||||
}
|
||||
|
||||
struct CompactAddressSymbol {
|
||||
const char *symbol_name;
|
||||
void *addr;
|
||||
};
|
||||
|
||||
unsigned long sukisu_compact_find_symbol(const char *name);
|
||||
|
||||
static struct CompactAddressSymbol address_symbol[] = {
|
||||
{ "kallsyms_lookup_name", &kallsyms_lookup_name },
|
||||
{ "compact_find_symbol", &sukisu_compact_find_symbol },
|
||||
{ "is_run_in_sukisu_ultra", (void *)1 },
|
||||
{ "is_su_allow_uid", &sukisu_is_su_allow_uid },
|
||||
{ "get_ap_mod_exclude", &sukisu_get_ap_mod_exclude },
|
||||
{ "is_uid_should_umount", &sukisu_is_uid_should_umount },
|
||||
{ "is_current_uid_manager", &sukisu_is_current_uid_manager },
|
||||
{ "get_manager_uid", &sukisu_get_manager_uid },
|
||||
{ "sukisu_set_manager_uid", &sukisu_set_manager_uid }
|
||||
};
|
||||
|
||||
unsigned long sukisu_compact_find_symbol(const char* name)
|
||||
{
|
||||
int i;
|
||||
unsigned long addr;
|
||||
|
||||
for (i = 0; i < (sizeof(address_symbol) / sizeof(struct CompactAddressSymbol)); i++) {
|
||||
struct CompactAddressSymbol *symbol = &address_symbol[i];
|
||||
|
||||
if (strcmp(name, symbol->symbol_name) == 0)
|
||||
return (unsigned long)symbol->addr;
|
||||
}
|
||||
|
||||
addr = kallsyms_lookup_name(name);
|
||||
if (addr)
|
||||
return addr;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_compact_find_symbol);
|
||||
6
kernel/kpm/compact.h
Normal file
6
kernel/kpm/compact.h
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
#ifndef __SUKISU_KPM_COMPACT_H
|
||||
#define __SUKISU_KPM_COMPACT_H
|
||||
|
||||
extern unsigned long sukisu_compact_find_symbol(const char *name);
|
||||
|
||||
#endif
|
||||
211
kernel/kpm/kpm.c
Normal file
211
kernel/kpm/kpm.c
Normal file
|
|
@ -0,0 +1,211 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
/*
|
||||
* Copyright (C) 2025 Liankong (xhsw.new@outlook.com). All Rights Reserved.
|
||||
* 本代码由GPL-2授权
|
||||
*
|
||||
* 适配KernelSU的KPM 内核模块加载器兼容实现
|
||||
*
|
||||
* 集成了 ELF 解析、内存布局、符号处理、重定位（支持 ARM64 重定位类型）
|
||||
* 并参照KernelPatch的标准KPM格式实现加载和控制
|
||||
*/
|
||||
|
||||
#include <linux/export.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/kernfs.h>
|
||||
#include <linux/file.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/elf.h>
|
||||
#include <linux/kallsyms.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/rcupdate.h>
|
||||
#include <asm/elf.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/string.h>
|
||||
#include <asm/cacheflush.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/set_memory.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/slab.h>
|
||||
#include <asm/insn.h>
|
||||
#include <linux/kprobes.h>
|
||||
#include <linux/stacktrace.h>
|
||||
#include <linux/kallsyms.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0) && defined(CONFIG_MODULES)
|
||||
#include <linux/moduleloader.h>
|
||||
#endif
|
||||
#include "kpm.h"
|
||||
#include "compact.h"
|
||||
|
||||
#ifndef NO_OPTIMIZE
|
||||
#if defined(__GNUC__) && !defined(__clang__)
|
||||
#define NO_OPTIMIZE __attribute__((optimize("O0")))
|
||||
#elif defined(__clang__)
|
||||
#define NO_OPTIMIZE __attribute__((optnone))
|
||||
#else
|
||||
#define NO_OPTIMIZE
|
||||
#endif
|
||||
#endif
|
||||
|
||||
noinline NO_OPTIMIZE void sukisu_kpm_load_module_path(const char *path,
|
||||
const char *args, void *ptr, void __user *result)
|
||||
{
|
||||
int res = -1;
|
||||
|
||||
printk("KPM: Stub function called (sukisu_kpm_load_module_path). "
|
||||
"path=%s args=%s ptr=%p\n", path, args, ptr);
|
||||
|
||||
__asm__ volatile("nop");
|
||||
|
||||
if (copy_to_user(result, &res, sizeof(res)) < 1)
|
||||
printk("KPM: Copy to user failed.");
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_kpm_load_module_path);
|
||||
|
||||
noinline NO_OPTIMIZE void sukisu_kpm_unload_module(const char *name,
|
||||
void *ptr, void __user *result)
|
||||
{
|
||||
int res = -1;
|
||||
|
||||
printk("KPM: Stub function called (sukisu_kpm_unload_module). "
|
||||
"name=%s ptr=%p\n", name, ptr);
|
||||
|
||||
__asm__ volatile("nop");
|
||||
|
||||
if (copy_to_user(result, &res, sizeof(res)) < 1)
|
||||
printk("KPM: Copy to user failed.");
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_kpm_unload_module);
|
||||
|
||||
noinline NO_OPTIMIZE void sukisu_kpm_num(void __user *result)
|
||||
{
|
||||
int res = 0;
|
||||
|
||||
printk("KPM: Stub function called (sukisu_kpm_num).\n");
|
||||
|
||||
__asm__ volatile("nop");
|
||||
|
||||
if (copy_to_user(result, &res, sizeof(res)) < 1)
|
||||
printk("KPM: Copy to user failed.");
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_kpm_num);
|
||||
|
||||
noinline NO_OPTIMIZE void sukisu_kpm_info(const char *name, void __user *out,
|
||||
void __user *result)
|
||||
{
|
||||
int res = -1;
|
||||
|
||||
printk("KPM: Stub function called (sukisu_kpm_info). "
|
||||
"name=%s buffer=%p\n", name, out);
|
||||
|
||||
__asm__ volatile("nop");
|
||||
|
||||
if (copy_to_user(result, &res, sizeof(res)) < 1)
|
||||
printk("KPM: Copy to user failed.");
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_kpm_info);
|
||||
|
||||
noinline NO_OPTIMIZE void sukisu_kpm_list(void __user *out, unsigned int bufferSize,
|
||||
void __user *result)
|
||||
{
|
||||
int res = -1;
|
||||
|
||||
printk("KPM: Stub function called (sukisu_kpm_list). "
|
||||
"buffer=%p size=%d\n", out, bufferSize);
|
||||
|
||||
if (copy_to_user(result, &res, sizeof(res)) < 1)
|
||||
printk("KPM: Copy to user failed.");
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_kpm_list);
|
||||
|
||||
noinline NO_OPTIMIZE void sukisu_kpm_control(void __user *name, void __user *args,
|
||||
void __user *result)
|
||||
{
|
||||
int res = -1;
|
||||
|
||||
printk("KPM: Stub function called (sukisu_kpm_control). "
|
||||
"name=%p args=%p\n", name, args);
|
||||
|
||||
__asm__ volatile("nop");
|
||||
|
||||
if (copy_to_user(result, &res, sizeof(res)) < 1)
|
||||
printk("KPM: Copy to user failed.");
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_kpm_control);
|
||||
|
||||
noinline NO_OPTIMIZE void sukisu_kpm_version(void __user *out, unsigned int bufferSize,
|
||||
void __user *result)
|
||||
{
|
||||
int res = -1;
|
||||
|
||||
printk("KPM: Stub function called (sukisu_kpm_version). "
|
||||
"buffer=%p size=%d\n", out, bufferSize);
|
||||
|
||||
if (copy_to_user(result, &res, sizeof(res)) < 1)
|
||||
printk("KPM: Copy to user failed.");
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_kpm_version);
|
||||
|
||||
noinline int sukisu_handle_kpm(unsigned long arg2, unsigned long arg3, unsigned long arg4,
|
||||
unsigned long arg5)
|
||||
{
|
||||
if (arg2 == SUKISU_KPM_LOAD) {
|
||||
char kernel_load_path[256] = { 0 };
|
||||
char kernel_args_buffer[256] = { 0 };
|
||||
|
||||
if (arg3 == 0)
|
||||
return -1;
|
||||
|
||||
strncpy_from_user((char *)&kernel_load_path, (const char __user *)arg3, 255);
|
||||
|
||||
if (arg4 != 0)
|
||||
strncpy_from_user((char *)&kernel_args_buffer, (const char __user *)arg4, 255);
|
||||
|
||||
sukisu_kpm_load_module_path((const char *)&kernel_load_path,
|
||||
(const char *)&kernel_args_buffer, NULL, (void __user *)arg5);
|
||||
} else if (arg2 == SUKISU_KPM_UNLOAD) {
|
||||
char kernel_name_buffer[256] = { 0 };
|
||||
|
||||
if (arg3 == 0)
|
||||
return -1;
|
||||
|
||||
strncpy_from_user((char *)&kernel_name_buffer, (const char __user *)arg3, 255);
|
||||
|
||||
sukisu_kpm_unload_module((const char *)&kernel_name_buffer, NULL,
|
||||
(void __user *)arg5);
|
||||
} else if (arg2 == SUKISU_KPM_NUM) {
|
||||
sukisu_kpm_num((void __user *)arg5);
|
||||
} else if (arg2 == SUKISU_KPM_INFO) {
|
||||
char kernel_name_buffer[256] = { 0 };
|
||||
|
||||
if (arg3 == 0 || arg4 == 0)
|
||||
return -1;
|
||||
|
||||
strncpy_from_user((char *)&kernel_name_buffer, (const char __user *)arg3, 255);
|
||||
|
||||
sukisu_kpm_info((const char *)&kernel_name_buffer, (char __user *)arg4,
|
||||
(void __user *)arg5);
|
||||
} else if (arg2 == SUKISU_KPM_LIST) {
|
||||
sukisu_kpm_list((char __user *)arg3, (unsigned int)arg4, (void __user *)arg5);
|
||||
} else if (arg2 == SUKISU_KPM_CONTROL) {
|
||||
sukisu_kpm_control((char __user *)arg3, (char __user *)arg4, (void __user *)arg5);
|
||||
} else if (arg2 == SUKISU_KPM_VERSION) {
|
||||
sukisu_kpm_version((char __user *)arg3, (unsigned int)arg4, (void __user *)arg5);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_handle_kpm);
|
||||
|
||||
int sukisu_is_kpm_control_code(unsigned long arg2) {
|
||||
return (arg2 >= CMD_KPM_CONTROL &&
|
||||
arg2 <= CMD_KPM_CONTROL_MAX) ? 1 : 0;
|
||||
}
|
||||
58
kernel/kpm/kpm.h
Normal file
58
kernel/kpm/kpm.h
Normal file
|
|
@ -0,0 +1,58 @@
|
|||
#ifndef __SUKISU_KPM_H
|
||||
#define __SUKISU_KPM_H
|
||||
|
||||
extern int sukisu_handle_kpm(unsigned long arg2, unsigned long arg3, unsigned long arg4,
|
||||
unsigned long arg5);
|
||||
extern int sukisu_is_kpm_control_code(unsigned long arg2);
|
||||
|
||||
/* KPM Control Code */
|
||||
#define CMD_KPM_CONTROL 28
|
||||
#define CMD_KPM_CONTROL_MAX 35
|
||||
|
||||
/* Control Code */
|
||||
/*
|
||||
* prctl(xxx, 28, "PATH", "ARGS")
|
||||
* success return 0, error return -N
|
||||
*/
|
||||
#define SUKISU_KPM_LOAD 28
|
||||
|
||||
/*
|
||||
* prctl(xxx, 29, "NAME")
|
||||
* success return 0, error return -N
|
||||
*/
|
||||
#define SUKISU_KPM_UNLOAD 29
|
||||
|
||||
/*
|
||||
* num = prctl(xxx, 30)
|
||||
* error return -N
|
||||
* success return +num or 0
|
||||
*/
|
||||
#define SUKISU_KPM_NUM 30
|
||||
|
||||
/*
|
||||
* prctl(xxx, 31, Buffer, BufferSize)
|
||||
* success return +out, error return -N
|
||||
*/
|
||||
#define SUKISU_KPM_LIST 31
|
||||
|
||||
/*
|
||||
* prctl(xxx, 32, "NAME", Buffer[256])
|
||||
* success return +out, error return -N
|
||||
*/
|
||||
#define SUKISU_KPM_INFO 32
|
||||
|
||||
/*
|
||||
* prctl(xxx, 33, "NAME", "ARGS")
|
||||
* success return KPM's result value
|
||||
* error return -N
|
||||
*/
|
||||
#define SUKISU_KPM_CONTROL 33
|
||||
|
||||
/*
|
||||
* prctl(xxx, 34, buffer, bufferSize)
|
||||
* success return KPM's result value
|
||||
* error return -N
|
||||
*/
|
||||
#define SUKISU_KPM_VERSION 34
|
||||
|
||||
#endif
|
||||
278
kernel/kpm/super_access.c
Normal file
278
kernel/kpm/super_access.c
Normal file
|
|
@ -0,0 +1,278 @@
|
|||
#include <linux/export.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/kernfs.h>
|
||||
#include <linux/file.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/elf.h>
|
||||
#include <linux/kallsyms.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/rcupdate.h>
|
||||
#include <asm/elf.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/string.h>
|
||||
#include <asm/cacheflush.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/set_memory.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/stddef.h>
|
||||
#include <linux/mount.h>
|
||||
#include <linux/kprobes.h>
|
||||
#include <linux/mm_types.h>
|
||||
#include <linux/netlink.h>
|
||||
#include <linux/sched.h>
|
||||
#include <../fs/mount.h>
|
||||
#include "kpm.h"
|
||||
#include "compact.h"
|
||||
|
||||
struct DynamicStructMember {
|
||||
const char *name;
|
||||
size_t size;
|
||||
size_t offset;
|
||||
};
|
||||
|
||||
struct DynamicStructInfo {
|
||||
const char *name;
|
||||
size_t count;
|
||||
size_t total_size;
|
||||
struct DynamicStructMember *members;
|
||||
};
|
||||
|
||||
#define DYNAMIC_STRUCT_BEGIN(struct_name) \
|
||||
static struct DynamicStructMember struct_name##_members[] = {
|
||||
|
||||
#define DEFINE_MEMBER(struct_name, member) \
|
||||
{ \
|
||||
.name = #member, \
|
||||
.size = sizeof(((struct struct_name *)0)->member), \
|
||||
.offset = offsetof(struct struct_name, member) \
|
||||
},
|
||||
|
||||
#define DYNAMIC_STRUCT_END(struct_name) \
|
||||
}; \
|
||||
static struct DynamicStructInfo struct_name##_info = { \
|
||||
.name = #struct_name, \
|
||||
.count = sizeof(struct_name##_members) / sizeof(struct DynamicStructMember), \
|
||||
.total_size = sizeof(struct struct_name), \
|
||||
.members = struct_name##_members \
|
||||
};
|
||||
|
||||
DYNAMIC_STRUCT_BEGIN(mount)
|
||||
DEFINE_MEMBER(mount, mnt_parent)
|
||||
DEFINE_MEMBER(mount, mnt)
|
||||
DEFINE_MEMBER(mount, mnt_id)
|
||||
DEFINE_MEMBER(mount, mnt_group_id)
|
||||
DEFINE_MEMBER(mount, mnt_expiry_mark)
|
||||
DEFINE_MEMBER(mount, mnt_master)
|
||||
DEFINE_MEMBER(mount, mnt_devname)
|
||||
DYNAMIC_STRUCT_END(mount)
|
||||
|
||||
DYNAMIC_STRUCT_BEGIN(vfsmount)
|
||||
DEFINE_MEMBER(vfsmount, mnt_root)
|
||||
DEFINE_MEMBER(vfsmount, mnt_sb)
|
||||
DEFINE_MEMBER(vfsmount, mnt_flags)
|
||||
DYNAMIC_STRUCT_END(vfsmount)
|
||||
|
||||
DYNAMIC_STRUCT_BEGIN(mnt_namespace)
|
||||
DEFINE_MEMBER(mnt_namespace, ns)
|
||||
DEFINE_MEMBER(mnt_namespace, root)
|
||||
DEFINE_MEMBER(mnt_namespace, seq)
|
||||
DEFINE_MEMBER(mnt_namespace, mounts)
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0)
|
||||
DEFINE_MEMBER(mnt_namespace, count)
|
||||
#endif
|
||||
DYNAMIC_STRUCT_END(mnt_namespace)
|
||||
|
||||
#ifdef CONFIG_KPROBES
|
||||
DYNAMIC_STRUCT_BEGIN(kprobe)
|
||||
DEFINE_MEMBER(kprobe, addr)
|
||||
DEFINE_MEMBER(kprobe, symbol_name)
|
||||
DEFINE_MEMBER(kprobe, offset)
|
||||
DEFINE_MEMBER(kprobe, pre_handler)
|
||||
DEFINE_MEMBER(kprobe, post_handler)
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0)
|
||||
DEFINE_MEMBER(kprobe, fault_handler)
|
||||
#endif
|
||||
DEFINE_MEMBER(kprobe, flags)
|
||||
DYNAMIC_STRUCT_END(kprobe)
|
||||
#endif
|
||||
|
||||
DYNAMIC_STRUCT_BEGIN(vm_area_struct)
|
||||
DEFINE_MEMBER(vm_area_struct,vm_start)
|
||||
DEFINE_MEMBER(vm_area_struct,vm_end)
|
||||
DEFINE_MEMBER(vm_area_struct,vm_flags)
|
||||
DEFINE_MEMBER(vm_area_struct,anon_vma)
|
||||
DEFINE_MEMBER(vm_area_struct,vm_pgoff)
|
||||
DEFINE_MEMBER(vm_area_struct,vm_file)
|
||||
DEFINE_MEMBER(vm_area_struct,vm_private_data)
|
||||
#ifdef CONFIG_ANON_VMA_NAME
|
||||
DEFINE_MEMBER(vm_area_struct, anon_name)
|
||||
#endif
|
||||
DEFINE_MEMBER(vm_area_struct, vm_ops)
|
||||
DYNAMIC_STRUCT_END(vm_area_struct)
|
||||
|
||||
DYNAMIC_STRUCT_BEGIN(vm_operations_struct)
|
||||
DEFINE_MEMBER(vm_operations_struct, open)
|
||||
DEFINE_MEMBER(vm_operations_struct, close)
|
||||
DEFINE_MEMBER(vm_operations_struct, name)
|
||||
DEFINE_MEMBER(vm_operations_struct, access)
|
||||
DYNAMIC_STRUCT_END(vm_operations_struct)
|
||||
|
||||
DYNAMIC_STRUCT_BEGIN(netlink_kernel_cfg)
|
||||
DEFINE_MEMBER(netlink_kernel_cfg, groups)
|
||||
DEFINE_MEMBER(netlink_kernel_cfg, flags)
|
||||
DEFINE_MEMBER(netlink_kernel_cfg, input)
|
||||
DEFINE_MEMBER(netlink_kernel_cfg, cb_mutex)
|
||||
DEFINE_MEMBER(netlink_kernel_cfg, bind)
|
||||
DEFINE_MEMBER(netlink_kernel_cfg, unbind)
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 1, 0)
|
||||
DEFINE_MEMBER(netlink_kernel_cfg, compare)
|
||||
#endif
|
||||
DYNAMIC_STRUCT_END(netlink_kernel_cfg)
|
||||
|
||||
DYNAMIC_STRUCT_BEGIN(task_struct)
|
||||
DEFINE_MEMBER(task_struct, pid)
|
||||
DEFINE_MEMBER(task_struct, tgid)
|
||||
DEFINE_MEMBER(task_struct, cred)
|
||||
DEFINE_MEMBER(task_struct, real_cred)
|
||||
DEFINE_MEMBER(task_struct, comm)
|
||||
DEFINE_MEMBER(task_struct, parent)
|
||||
DEFINE_MEMBER(task_struct, group_leader)
|
||||
DEFINE_MEMBER(task_struct, mm)
|
||||
DEFINE_MEMBER(task_struct, active_mm)
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 19, 0)
|
||||
DEFINE_MEMBER(task_struct, pids[PIDTYPE_PID].pid)
|
||||
#else
|
||||
DEFINE_MEMBER(task_struct, thread_pid)
|
||||
#endif
|
||||
DEFINE_MEMBER(task_struct, files)
|
||||
DEFINE_MEMBER(task_struct, seccomp)
|
||||
#ifdef CONFIG_THREAD_INFO_IN_TASK
|
||||
DEFINE_MEMBER(task_struct, thread_info)
|
||||
#endif
|
||||
#ifdef CONFIG_CGROUPS
|
||||
DEFINE_MEMBER(task_struct, cgroups)
|
||||
#endif
|
||||
#ifdef CONFIG_SECURITY
|
||||
DEFINE_MEMBER(task_struct, security)
|
||||
#endif
|
||||
DEFINE_MEMBER(task_struct, thread)
|
||||
DYNAMIC_STRUCT_END(task_struct)
|
||||
|
||||
#define STRUCT_INFO(name) &(name##_info)
|
||||
|
||||
static struct DynamicStructInfo *dynamic_struct_infos[] = {
|
||||
STRUCT_INFO(mount),
|
||||
STRUCT_INFO(vfsmount),
|
||||
STRUCT_INFO(mnt_namespace),
|
||||
#ifdef CONFIG_KPROBES
|
||||
STRUCT_INFO(kprobe),
|
||||
#endif
|
||||
STRUCT_INFO(vm_area_struct),
|
||||
STRUCT_INFO(vm_operations_struct),
|
||||
STRUCT_INFO(netlink_kernel_cfg),
|
||||
STRUCT_INFO(task_struct)
|
||||
};
|
||||
|
||||
/*
|
||||
* return 0 if successful
|
||||
* return -1 if struct not defined
|
||||
*/
|
||||
int sukisu_super_find_struct(const char *struct_name, size_t *out_size, int *out_members)
|
||||
{
|
||||
for (size_t i = 0; i < (sizeof(dynamic_struct_infos) / sizeof(dynamic_struct_infos[0])); i++) {
|
||||
struct DynamicStructInfo *info = dynamic_struct_infos[i];
|
||||
|
||||
if (strcmp(struct_name, info->name) == 0) {
|
||||
if (out_size)
|
||||
*out_size = info->total_size;
|
||||
|
||||
if (out_members)
|
||||
*out_members = info->count;
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_super_find_struct);
|
||||
|
||||
/*
|
||||
* Dynamic access struct
|
||||
* return 0 if successful
|
||||
* return -1 if struct not defined
|
||||
* return -2 if member not defined
|
||||
*/
|
||||
int sukisu_super_access(const char *struct_name, const char *member_name, size_t *out_offset,
|
||||
size_t *out_size)
|
||||
{
|
||||
for (size_t i = 0; i < (sizeof(dynamic_struct_infos) / sizeof(dynamic_struct_infos[0])); i++) {
|
||||
struct DynamicStructInfo *info = dynamic_struct_infos[i];
|
||||
|
||||
if (strcmp(struct_name, info->name) == 0) {
|
||||
for (size_t i1 = 0; i1 < info->count; i1++) {
|
||||
if (strcmp(info->members[i1].name, member_name) == 0) {
|
||||
if (out_offset)
|
||||
*out_offset = info->members[i].offset;
|
||||
|
||||
if (out_size)
|
||||
*out_size = info->members[i].size;
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return -2;
|
||||
}
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_super_access);
|
||||
|
||||
#define DYNAMIC_CONTAINER_OF(offset, member_ptr) ({ \
|
||||
(offset != (size_t)-1) ? (void*)((char*)(member_ptr) - offset) : NULL; \
|
||||
})
|
||||
|
||||
/*
|
||||
* Dynamic container_of
|
||||
* return 0 if success
|
||||
* return -1 if current struct not defined
|
||||
* return -2 if target member not defined
|
||||
*/
|
||||
int sukisu_super_container_of(const char *struct_name, const char *member_name, void *ptr,
|
||||
void **out_ptr)
|
||||
{
|
||||
if (ptr == NULL)
|
||||
return -3;
|
||||
|
||||
for (size_t i = 0; i < (sizeof(dynamic_struct_infos) / sizeof(dynamic_struct_infos[0])); i++) {
|
||||
struct DynamicStructInfo *info = dynamic_struct_infos[i];
|
||||
|
||||
if (strcmp(struct_name, info->name) == 0) {
|
||||
for (size_t i1 = 0; i1 < info->count; i1++) {
|
||||
if (strcmp(info->members[i1].name, member_name) == 0) {
|
||||
*out_ptr = (void *)DYNAMIC_CONTAINER_OF(info->members[i1].offset, ptr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return -2;
|
||||
}
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
EXPORT_SYMBOL(sukisu_super_container_of);
|
||||
15
kernel/kpm/super_access.h
Normal file
15
kernel/kpm/super_access.h
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
#ifndef __SUKISU_SUPER_ACCESS_H
|
||||
#define __SUKISU_SUPER_ACCESS_H
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/stddef.h>
|
||||
#include "kpm.h"
|
||||
#include "compact.h"
|
||||
|
||||
extern int sukisu_super_find_struct(const char *struct_name, size_t *out_size, int *out_members);
|
||||
extern int sukisu_super_access(const char *struct_name, const char *member_name, size_t *out_offset,
|
||||
size_t *out_size);
|
||||
extern int sukisu_super_container_of(const char *struct_name, const char *member_name, void *ptr,
|
||||
void **out_ptr);
|
||||
|
||||
#endif
|
||||
97
kernel/ksu.c
Normal file
97
kernel/ksu.c
Normal file
|
|
@ -0,0 +1,97 @@
|
|||
#include <linux/export.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/kobject.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/workqueue.h>
|
||||
|
||||
#include "allowlist.h"
|
||||
#include "arch.h"
|
||||
#include "core_hook.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksu.h"
|
||||
#include "throne_tracker.h"
|
||||
|
||||
static struct workqueue_struct *ksu_workqueue;
|
||||
|
||||
bool ksu_queue_work(struct work_struct *work)
|
||||
{
|
||||
return queue_work(ksu_workqueue, work);
|
||||
}
|
||||
|
||||
extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
|
||||
void *argv, void *envp, int *flags);
|
||||
|
||||
extern void ksu_sucompat_init();
|
||||
extern void ksu_sucompat_exit();
|
||||
extern void ksu_ksud_init();
|
||||
extern void ksu_ksud_exit();
|
||||
#ifdef CONFIG_KSU_TRACEPOINT_HOOK
|
||||
extern void ksu_trace_register();
|
||||
extern void ksu_trace_unregister();
|
||||
#endif
|
||||
|
||||
int __init kernelsu_init(void)
|
||||
{
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_alert("*************************************************************");
|
||||
pr_alert("** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **");
|
||||
pr_alert("** **");
|
||||
pr_alert("** You are running KernelSU in DEBUG mode **");
|
||||
pr_alert("** **");
|
||||
pr_alert("** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **");
|
||||
pr_alert("*************************************************************");
|
||||
#endif
|
||||
|
||||
ksu_core_init();
|
||||
|
||||
ksu_workqueue = alloc_ordered_workqueue("kernelsu_work_queue", 0);
|
||||
|
||||
ksu_allowlist_init();
|
||||
|
||||
ksu_throne_tracker_init();
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
ksu_sucompat_init();
|
||||
ksu_ksud_init();
|
||||
#else
|
||||
pr_alert("KPROBES is disabled, KernelSU may not work, please check https://kernelsu.org/guide/how-to-integrate-for-non-gki.html");
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_KSU_TRACEPOINT_HOOK
|
||||
ksu_trace_register();
|
||||
#endif
|
||||
|
||||
#ifdef MODULE
|
||||
#ifndef CONFIG_KSU_DEBUG
|
||||
kobject_del(&THIS_MODULE->mkobj.kobj);
|
||||
#endif
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
void kernelsu_exit(void)
|
||||
{
|
||||
ksu_allowlist_exit();
|
||||
|
||||
ksu_throne_tracker_exit();
|
||||
|
||||
destroy_workqueue(ksu_workqueue);
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
ksu_ksud_exit();
|
||||
ksu_sucompat_exit();
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_KSU_TRACEPOINT_HOOK
|
||||
ksu_trace_unregister();
|
||||
#endif
|
||||
|
||||
ksu_core_exit();
|
||||
}
|
||||
|
||||
module_init(kernelsu_init);
|
||||
module_exit(kernelsu_exit);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("weishu");
|
||||
MODULE_DESCRIPTION("Android KernelSU");
|
||||
MODULE_IMPORT_NS(VFS_internal_I_am_really_a_filesystem_and_am_NOT_a_driver);
|
||||
132
kernel/ksu.h
Normal file
132
kernel/ksu.h
Normal file
|
|
@ -0,0 +1,132 @@
|
|||
#ifndef __KSU_H_KSU
|
||||
#define __KSU_H_KSU
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/workqueue.h>
|
||||
|
||||
#define KERNEL_SU_VERSION KSU_VERSION
|
||||
#define KERNEL_SU_OPTION 0xDEADBEEF
|
||||
|
||||
#define CMD_GRANT_ROOT 0
|
||||
#define CMD_BECOME_MANAGER 1
|
||||
#define CMD_GET_VERSION 2
|
||||
#define CMD_ALLOW_SU 3
|
||||
#define CMD_DENY_SU 4
|
||||
#define CMD_GET_ALLOW_LIST 5
|
||||
#define CMD_GET_DENY_LIST 6
|
||||
#define CMD_REPORT_EVENT 7
|
||||
#define CMD_SET_SEPOLICY 8
|
||||
#define CMD_CHECK_SAFEMODE 9
|
||||
#define CMD_GET_APP_PROFILE 10
|
||||
#define CMD_SET_APP_PROFILE 11
|
||||
#define CMD_UID_GRANTED_ROOT 12
|
||||
#define CMD_UID_SHOULD_UMOUNT 13
|
||||
#define CMD_IS_SU_ENABLED 14
|
||||
#define CMD_ENABLE_SU 15
|
||||
|
||||
#define CMD_GET_FULL_VERSION 0xC0FFEE1A
|
||||
|
||||
#define CMD_ENABLE_KPM 100
|
||||
#define CMD_HOOK_TYPE 101
|
||||
#define CMD_DYNAMIC_MANAGER 103
|
||||
#define CMD_GET_MANAGERS 104
|
||||
|
||||
#define EVENT_POST_FS_DATA 1
|
||||
#define EVENT_BOOT_COMPLETED 2
|
||||
#define EVENT_MODULE_MOUNTED 3
|
||||
|
||||
#define KSU_APP_PROFILE_VER 2
|
||||
#define KSU_MAX_PACKAGE_NAME 256
|
||||
// NGROUPS_MAX for Linux is 65535 generally, but we only supports 32 groups.
|
||||
#define KSU_MAX_GROUPS 32
|
||||
#define KSU_SELINUX_DOMAIN 64
|
||||
|
||||
// SukiSU Ultra kernel su version full strings
|
||||
#ifndef KSU_VERSION_FULL
|
||||
#define KSU_VERSION_FULL "v3.x-00000000@unknown"
|
||||
#endif
|
||||
#define KSU_FULL_VERSION_STRING 255
|
||||
|
||||
#define DYNAMIC_MANAGER_OP_SET 0
|
||||
#define DYNAMIC_MANAGER_OP_GET 1
|
||||
#define DYNAMIC_MANAGER_OP_CLEAR 2
|
||||
|
||||
struct dynamic_manager_user_config {
|
||||
unsigned int operation;
|
||||
unsigned int size;
|
||||
char hash[65];
|
||||
};
|
||||
|
||||
struct manager_list_info {
|
||||
int count;
|
||||
struct {
|
||||
uid_t uid;
|
||||
int signature_index;
|
||||
} managers[2];
|
||||
};
|
||||
|
||||
struct root_profile {
|
||||
int32_t uid;
|
||||
int32_t gid;
|
||||
|
||||
int32_t groups_count;
|
||||
int32_t groups[KSU_MAX_GROUPS];
|
||||
|
||||
// kernel_cap_t is u32[2] for capabilities v3
|
||||
struct {
|
||||
u64 effective;
|
||||
u64 permitted;
|
||||
u64 inheritable;
|
||||
} capabilities;
|
||||
|
||||
char selinux_domain[KSU_SELINUX_DOMAIN];
|
||||
|
||||
int32_t namespaces;
|
||||
};
|
||||
|
||||
struct non_root_profile {
|
||||
bool umount_modules;
|
||||
};
|
||||
|
||||
struct app_profile {
|
||||
// It may be utilized for backward compatibility, although we have never explicitly made any promises regarding this.
|
||||
u32 version;
|
||||
|
||||
// this is usually the package of the app, but can be other value for special apps
|
||||
char key[KSU_MAX_PACKAGE_NAME];
|
||||
int32_t current_uid;
|
||||
bool allow_su;
|
||||
|
||||
union {
|
||||
struct {
|
||||
bool use_default;
|
||||
char template_name[KSU_MAX_PACKAGE_NAME];
|
||||
|
||||
struct root_profile profile;
|
||||
} rp_config;
|
||||
|
||||
struct {
|
||||
bool use_default;
|
||||
|
||||
struct non_root_profile profile;
|
||||
} nrp_config;
|
||||
};
|
||||
};
|
||||
|
||||
bool ksu_queue_work(struct work_struct *work);
|
||||
|
||||
static inline int startswith(char *s, char *prefix)
|
||||
{
|
||||
return strncmp(s, prefix, strlen(prefix));
|
||||
}
|
||||
|
||||
static inline int endswith(const char *s, const char *t)
|
||||
{
|
||||
size_t slen = strlen(s);
|
||||
size_t tlen = strlen(t);
|
||||
if (tlen > slen)
|
||||
return 1;
|
||||
return strcmp(s + slen - tlen, t);
|
||||
}
|
||||
|
||||
#endif
|
||||
69
kernel/ksu_trace.c
Normal file
69
kernel/ksu_trace.c
Normal file
|
|
@ -0,0 +1,69 @@
|
|||
#include "ksu_trace.h"
|
||||
|
||||
|
||||
// extern kernelsu functions
|
||||
extern bool ksu_vfs_read_hook __read_mostly;
|
||||
extern bool ksu_input_hook __read_mostly;
|
||||
extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr, void *argv, void *envp, int *flags);
|
||||
extern int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode, int *flags);
|
||||
extern int ksu_handle_sys_read(unsigned int fd, char __user **buf_ptr, size_t *count_ptr);
|
||||
extern int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
|
||||
extern int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code, int *value);
|
||||
// end kernelsu functions
|
||||
|
||||
|
||||
// tracepoint callback functions
|
||||
void ksu_trace_execveat_sucompat_hook_callback(void *data, int *fd, struct filename **filename_ptr,
|
||||
void *argv, void *envp, int *flags)
|
||||
{
|
||||
ksu_handle_execveat_sucompat(fd, filename_ptr, argv, envp, flags);
|
||||
}
|
||||
|
||||
void ksu_trace_faccessat_hook_callback(void *data, int *dfd, const char __user **filename_user,
|
||||
int *mode, int *flags)
|
||||
{
|
||||
ksu_handle_faccessat(dfd, filename_user, mode, flags);
|
||||
}
|
||||
|
||||
void ksu_trace_sys_read_hook_callback(void *data, unsigned int fd, char __user **buf_ptr,
|
||||
size_t *count_ptr)
|
||||
{
|
||||
if (unlikely(ksu_vfs_read_hook))
|
||||
ksu_handle_sys_read(fd, buf_ptr, count_ptr);
|
||||
}
|
||||
|
||||
void ksu_trace_stat_hook_callback(void *data, int *dfd, const char __user **filename_user,
|
||||
int *flags)
|
||||
{
|
||||
ksu_handle_stat(dfd, filename_user, flags);
|
||||
}
|
||||
|
||||
void ksu_trace_input_hook_callback(void *data, unsigned int *type, unsigned int *code,
|
||||
int *value)
|
||||
{
|
||||
if (unlikely(ksu_input_hook))
|
||||
ksu_handle_input_handle_event(type, code, value);
|
||||
}
|
||||
|
||||
// end tracepoint callback functions
|
||||
|
||||
|
||||
// register tracepoint callback functions
|
||||
void ksu_trace_register(void)
|
||||
{
|
||||
register_trace_ksu_trace_execveat_sucompat_hook(ksu_trace_execveat_sucompat_hook_callback, NULL);
|
||||
register_trace_ksu_trace_faccessat_hook(ksu_trace_faccessat_hook_callback, NULL);
|
||||
register_trace_ksu_trace_sys_read_hook(ksu_trace_sys_read_hook_callback, NULL);
|
||||
register_trace_ksu_trace_stat_hook(ksu_trace_stat_hook_callback, NULL);
|
||||
register_trace_ksu_trace_input_hook(ksu_trace_input_hook_callback, NULL);
|
||||
}
|
||||
|
||||
// unregister tracepoint callback functions
|
||||
void ksu_trace_unregister(void)
|
||||
{
|
||||
unregister_trace_ksu_trace_execveat_sucompat_hook(ksu_trace_execveat_sucompat_hook_callback, NULL);
|
||||
unregister_trace_ksu_trace_faccessat_hook(ksu_trace_faccessat_hook_callback, NULL);
|
||||
unregister_trace_ksu_trace_sys_read_hook(ksu_trace_sys_read_hook_callback, NULL);
|
||||
unregister_trace_ksu_trace_stat_hook(ksu_trace_stat_hook_callback, NULL);
|
||||
unregister_trace_ksu_trace_input_hook(ksu_trace_input_hook_callback, NULL);
|
||||
}
|
||||
37
kernel/ksu_trace.h
Normal file
37
kernel/ksu_trace.h
Normal file
|
|
@ -0,0 +1,37 @@
|
|||
#undef TRACE_SYSTEM
|
||||
#define TRACE_SYSTEM ksu_trace
|
||||
|
||||
#if !defined(_KSU_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
|
||||
#define _KSU_TRACE_H
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/tracepoint.h>
|
||||
|
||||
DECLARE_TRACE(ksu_trace_execveat_sucompat_hook,
|
||||
TP_PROTO(int *fd, struct filename **filename_ptr, void *argv, void *envp, int *flags),
|
||||
TP_ARGS(fd, filename_ptr, argv, envp, flags));
|
||||
|
||||
DECLARE_TRACE(ksu_trace_faccessat_hook,
|
||||
TP_PROTO(int *dfd, const char __user **filename_user, int *mode, int *flags),
|
||||
TP_ARGS(dfd, filename_user, mode, flags));
|
||||
|
||||
DECLARE_TRACE(ksu_trace_sys_read_hook,
|
||||
TP_PROTO(unsigned int fd, char __user **buf_ptr, size_t *count_ptr),
|
||||
TP_ARGS(fd, buf_ptr, count_ptr));
|
||||
|
||||
DECLARE_TRACE(ksu_trace_stat_hook,
|
||||
TP_PROTO(int *dfd, const char __user **filename_user, int *flags),
|
||||
TP_ARGS(dfd, filename_user, flags));
|
||||
|
||||
DECLARE_TRACE(ksu_trace_input_hook,
|
||||
TP_PROTO(unsigned int *type, unsigned int *code, int *value),
|
||||
TP_ARGS(type, code, value));
|
||||
|
||||
#endif /* _KSU_TRACE_H */
|
||||
|
||||
#undef TRACE_INCLUDE_PATH
|
||||
#define TRACE_INCLUDE_PATH .
|
||||
#undef TRACE_INCLUDE_FILE
|
||||
#define TRACE_INCLUDE_FILE ksu_trace
|
||||
|
||||
#include <trace/define_trace.h>
|
||||
8
kernel/ksu_trace_export.c
Normal file
8
kernel/ksu_trace_export.c
Normal file
|
|
@ -0,0 +1,8 @@
|
|||
#define CREATE_TRACE_POINTS
|
||||
#include "ksu_trace.h"
|
||||
|
||||
EXPORT_TRACEPOINT_SYMBOL_GPL(ksu_trace_execveat_sucompat_hook);
|
||||
EXPORT_TRACEPOINT_SYMBOL_GPL(ksu_trace_faccessat_hook);
|
||||
EXPORT_TRACEPOINT_SYMBOL_GPL(ksu_trace_sys_read_hook);
|
||||
EXPORT_TRACEPOINT_SYMBOL_GPL(ksu_trace_stat_hook);
|
||||
EXPORT_TRACEPOINT_SYMBOL_GPL(ksu_trace_input_hook);
|
||||
664
kernel/ksud.c
Normal file
664
kernel/ksud.c
Normal file
|
|
@ -0,0 +1,664 @@
|
|||
#include <asm/current.h>
|
||||
#include <linux/compat.h>
|
||||
#include <linux/cred.h>
|
||||
#include <linux/dcache.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/file.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/input-event-codes.h>
|
||||
#include <linux/kprobes.h>
|
||||
#include <linux/printk.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/workqueue.h>
|
||||
|
||||
#include "allowlist.h"
|
||||
#include "arch.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksud.h"
|
||||
#include "kernel_compat.h"
|
||||
#include "selinux/selinux.h"
|
||||
|
||||
|
||||
static const char KERNEL_SU_RC[] =
|
||||
"\n"
|
||||
|
||||
"on post-fs-data\n"
|
||||
" start logd\n"
|
||||
// We should wait for the post-fs-data finish
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " post-fs-data\n"
|
||||
"\n"
|
||||
|
||||
"on nonencrypted\n"
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " services\n"
|
||||
"\n"
|
||||
|
||||
"on property:vold.decrypt=trigger_restart_framework\n"
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " services\n"
|
||||
"\n"
|
||||
|
||||
"on property:sys.boot_completed=1\n"
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " boot-completed\n"
|
||||
"\n"
|
||||
|
||||
"\n";
|
||||
|
||||
static void stop_vfs_read_hook();
|
||||
static void stop_execve_hook();
|
||||
static void stop_input_hook();
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
static struct work_struct stop_vfs_read_work;
|
||||
static struct work_struct stop_execve_hook_work;
|
||||
static struct work_struct stop_input_hook_work;
|
||||
#else
|
||||
bool ksu_vfs_read_hook __read_mostly = true;
|
||||
bool ksu_input_hook __read_mostly = true;
|
||||
#endif
|
||||
bool ksu_execveat_hook __read_mostly = true;
|
||||
|
||||
u32 ksu_devpts_sid;
|
||||
|
||||
// Detect whether it is on or not
|
||||
static bool is_boot_phase = true;
|
||||
|
||||
void on_post_fs_data(void)
|
||||
{
|
||||
static bool done = false;
|
||||
if (done) {
|
||||
pr_info("on_post_fs_data already done\n");
|
||||
return;
|
||||
}
|
||||
done = true;
|
||||
pr_info("on_post_fs_data!\n");
|
||||
ksu_load_allow_list();
|
||||
// sanity check, this may influence the performance
|
||||
stop_input_hook();
|
||||
|
||||
ksu_devpts_sid = ksu_get_devpts_sid();
|
||||
pr_info("devpts sid: %d\n", ksu_devpts_sid);
|
||||
|
||||
// End of boot state
|
||||
is_boot_phase = false;
|
||||
}
|
||||
|
||||
// since _ksud handler only uses argv and envp for comparisons
|
||||
// this can probably work
|
||||
// adapted from ksu_handle_execveat_ksud
|
||||
static int ksu_handle_bprm_ksud(const char *filename, const char *argv1, const char *envp, size_t envp_len)
|
||||
{
|
||||
static const char app_process[] = "/system/bin/app_process";
|
||||
static bool first_app_process = true;
|
||||
|
||||
/* This applies to versions Android 10+ */
|
||||
static const char system_bin_init[] = "/system/bin/init";
|
||||
/* This applies to versions between Android 6 ~ 9 */
|
||||
static const char old_system_init[] = "/init";
|
||||
static bool init_second_stage_executed = false;
|
||||
|
||||
// return early when disabled
|
||||
if (!ksu_execveat_hook)
|
||||
return 0;
|
||||
|
||||
if (!filename)
|
||||
return 0;
|
||||
|
||||
// debug! remove me!
|
||||
pr_info("%s: filename: %s argv1: %s envp_len: %zu\n", __func__, filename, argv1, envp_len);
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
const char *envp_n = envp;
|
||||
unsigned int envc = 1;
|
||||
do {
|
||||
pr_info("%s: envp[%d]: %s\n", __func__, envc, envp_n);
|
||||
envp_n += strlen(envp_n) + 1;
|
||||
envc++;
|
||||
} while (envp_n < envp + 256);
|
||||
#endif
|
||||
|
||||
if (init_second_stage_executed)
|
||||
goto first_app_process;
|
||||
|
||||
// /system/bin/init with argv1
|
||||
if (!init_second_stage_executed
|
||||
&& (!memcmp(filename, system_bin_init, sizeof(system_bin_init) - 1))) {
|
||||
if (argv1 && !strcmp(argv1, "second_stage")) {
|
||||
pr_info("%s: /system/bin/init second_stage executed\n", __func__);
|
||||
apply_kernelsu_rules();
|
||||
init_second_stage_executed = true;
|
||||
ksu_android_ns_fs_check();
|
||||
}
|
||||
}
|
||||
|
||||
// /init with argv1
|
||||
if (!init_second_stage_executed
|
||||
&& (!memcmp(filename, old_system_init, sizeof(old_system_init) - 1))) {
|
||||
if (argv1 && !strcmp(argv1, "--second-stage")) {
|
||||
pr_info("%s: /init --second-stage executed\n", __func__);
|
||||
apply_kernelsu_rules();
|
||||
init_second_stage_executed = true;
|
||||
ksu_android_ns_fs_check();
|
||||
}
|
||||
}
|
||||
|
||||
if (!envp || !envp_len)
|
||||
goto first_app_process;
|
||||
|
||||
// /init without argv1/useless-argv1 but usable envp
|
||||
// untested! TODO: test and debug me!
|
||||
if (!init_second_stage_executed && (!memcmp(filename, old_system_init, sizeof(old_system_init) - 1))) {
|
||||
|
||||
// we hunt for "INIT_SECOND_STAGE"
|
||||
const char *envp_n = envp;
|
||||
unsigned int envc = 1;
|
||||
do {
|
||||
if (strstarts(envp_n, "INIT_SECOND_STAGE"))
|
||||
break;
|
||||
envp_n += strlen(envp_n) + 1;
|
||||
envc++;
|
||||
} while (envp_n < envp + envp_len);
|
||||
pr_info("%s: envp[%d]: %s\n", __func__, envc, envp_n);
|
||||
|
||||
if (!strcmp(envp_n, "INIT_SECOND_STAGE=1")
|
||||
|| !strcmp(envp_n, "INIT_SECOND_STAGE=true") ) {
|
||||
pr_info("%s: /init +envp: INIT_SECOND_STAGE executed\n", __func__);
|
||||
apply_kernelsu_rules();
|
||||
init_second_stage_executed = true;
|
||||
ksu_android_ns_fs_check();
|
||||
}
|
||||
}
|
||||
|
||||
first_app_process:
|
||||
if (first_app_process && !memcmp(filename, app_process, sizeof(app_process) - 1)) {
|
||||
first_app_process = false;
|
||||
pr_info("%s: exec app_process, /data prepared, second_stage: %d\n", __func__, init_second_stage_executed);
|
||||
on_post_fs_data();
|
||||
stop_execve_hook();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_pre_ksud(const char *filename)
|
||||
{
|
||||
if (likely(!ksu_execveat_hook))
|
||||
return 0;
|
||||
|
||||
// not /system/bin/init, not /init, not /system/bin/app_process (64/32 thingy)
|
||||
// return 0;
|
||||
if (likely(strcmp(filename, "/system/bin/init") && strcmp(filename, "/init")
|
||||
&& !strstarts(filename, "/system/bin/app_process") ))
|
||||
return 0;
|
||||
|
||||
if (!current || !current->mm)
|
||||
return 0;
|
||||
|
||||
// https://elixir.bootlin.com/linux/v4.14.1/source/include/linux/mm_types.h#L429
|
||||
// unsigned long arg_start, arg_end, env_start, env_end;
|
||||
unsigned long arg_start = current->mm->arg_start;
|
||||
unsigned long arg_end = current->mm->arg_end;
|
||||
unsigned long env_start = current->mm->env_start;
|
||||
unsigned long env_end = current->mm->env_end;
|
||||
|
||||
size_t arg_len = arg_end - arg_start;
|
||||
size_t envp_len = env_end - env_start;
|
||||
|
||||
if (arg_len <= 0 || envp_len <= 0) // this wont make sense, filter it
|
||||
return 0;
|
||||
|
||||
#define ARGV_MAX 32 // this is enough for argv1
|
||||
#define ENVP_MAX 256 // this is enough for INIT_SECOND_STAGE
|
||||
char args[ARGV_MAX];
|
||||
size_t argv_copy_len = (arg_len > ARGV_MAX) ? ARGV_MAX : arg_len;
|
||||
char envp[ENVP_MAX];
|
||||
size_t envp_copy_len = (envp_len > ENVP_MAX) ? ENVP_MAX : envp_len;
|
||||
|
||||
// we cant use strncpy on here, else it will truncate once it sees \0
|
||||
if (ksu_copy_from_user_retry(args, (void __user *)arg_start, argv_copy_len))
|
||||
return 0;
|
||||
|
||||
if (ksu_copy_from_user_retry(envp, (void __user *)env_start, envp_copy_len))
|
||||
return 0;
|
||||
|
||||
args[ARGV_MAX - 1] = '\0';
|
||||
envp[ENVP_MAX - 1] = '\0';
|
||||
|
||||
// we only need argv1 !
|
||||
// abuse strlen here since it only gets length up to \0
|
||||
char *argv1 = args + strlen(args) + 1;
|
||||
if (argv1 >= args + argv_copy_len) // out of bounds!
|
||||
argv1 = "";
|
||||
|
||||
return ksu_handle_bprm_ksud(filename, argv1, envp, envp_copy_len);
|
||||
}
|
||||
|
||||
static ssize_t (*orig_read)(struct file *, char __user *, size_t, loff_t *);
|
||||
static ssize_t (*orig_read_iter)(struct kiocb *, struct iov_iter *);
|
||||
static struct file_operations fops_proxy;
|
||||
static ssize_t read_count_append = 0;
|
||||
|
||||
static ssize_t read_proxy(struct file *file, char __user *buf, size_t count,
|
||||
loff_t *pos)
|
||||
{
|
||||
bool first_read = file->f_pos == 0;
|
||||
ssize_t ret = orig_read(file, buf, count, pos);
|
||||
if (first_read) {
|
||||
pr_info("read_proxy append %ld + %ld\n", ret,
|
||||
read_count_append);
|
||||
ret += read_count_append;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static ssize_t read_iter_proxy(struct kiocb *iocb, struct iov_iter *to)
|
||||
{
|
||||
bool first_read = iocb->ki_pos == 0;
|
||||
ssize_t ret = orig_read_iter(iocb, to);
|
||||
if (first_read) {
|
||||
pr_info("read_iter_proxy append %ld + %ld\n", ret,
|
||||
read_count_append);
|
||||
ret += read_count_append;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
|
||||
size_t *count_ptr, loff_t **pos)
|
||||
{
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_vfs_read_hook) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
struct file *file;
|
||||
char __user *buf;
|
||||
size_t count;
|
||||
|
||||
if (strcmp(current->comm, "init")) {
|
||||
// we are only interest in `init` process
|
||||
return 0;
|
||||
}
|
||||
|
||||
file = *file_ptr;
|
||||
if (IS_ERR(file)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!d_is_reg(file->f_path.dentry)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
const char *short_name = file->f_path.dentry->d_name.name;
|
||||
if (strcmp(short_name, "atrace.rc")) {
|
||||
// we are only interest `atrace.rc` file name file
|
||||
return 0;
|
||||
}
|
||||
char path[256];
|
||||
char *dpath = d_path(&file->f_path, path, sizeof(path));
|
||||
|
||||
if (IS_ERR(dpath)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (strcmp(dpath, "/system/etc/init/atrace.rc")) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
// we only process the first read
|
||||
static bool rc_inserted = false;
|
||||
if (rc_inserted) {
|
||||
// we don't need this kprobe, unregister it!
|
||||
stop_vfs_read_hook();
|
||||
return 0;
|
||||
}
|
||||
rc_inserted = true;
|
||||
|
||||
// now we can sure that the init process is reading
|
||||
// `/system/etc/init/atrace.rc`
|
||||
buf = *buf_ptr;
|
||||
count = *count_ptr;
|
||||
|
||||
size_t rc_count = strlen(KERNEL_SU_RC);
|
||||
|
||||
pr_info("vfs_read: %s, comm: %s, count: %zu, rc_count: %zu\n", dpath,
|
||||
current->comm, count, rc_count);
|
||||
|
||||
if (count < rc_count) {
|
||||
pr_err("count: %zu < rc_count: %zu\n", count, rc_count);
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t ret = copy_to_user(buf, KERNEL_SU_RC, rc_count);
|
||||
if (ret) {
|
||||
pr_err("copy ksud.rc failed: %zu\n", ret);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// we've succeed to insert ksud.rc, now we need to proxy the read and modify the result!
|
||||
// But, we can not modify the file_operations directly, because it's in read-only memory.
|
||||
// We just replace the whole file_operations with a proxy one.
|
||||
memcpy(&fops_proxy, file->f_op, sizeof(struct file_operations));
|
||||
orig_read = file->f_op->read;
|
||||
if (orig_read) {
|
||||
fops_proxy.read = read_proxy;
|
||||
}
|
||||
orig_read_iter = file->f_op->read_iter;
|
||||
if (orig_read_iter) {
|
||||
fops_proxy.read_iter = read_iter_proxy;
|
||||
}
|
||||
// replace the file_operations
|
||||
file->f_op = &fops_proxy;
|
||||
read_count_append = rc_count;
|
||||
|
||||
*buf_ptr = buf + rc_count;
|
||||
*count_ptr = count - rc_count;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_sys_read(unsigned int fd, char __user **buf_ptr,
|
||||
size_t *count_ptr)
|
||||
{
|
||||
struct file *file = fget(fd);
|
||||
if (!file) {
|
||||
return 0;
|
||||
}
|
||||
int result = ksu_handle_vfs_read(&file, buf_ptr, count_ptr, NULL);
|
||||
fput(file);
|
||||
return result;
|
||||
}
|
||||
|
||||
static unsigned int volumedown_pressed_count = 0;
|
||||
|
||||
static bool is_volumedown_enough(unsigned int count)
|
||||
{
|
||||
return count >= 3;
|
||||
}
|
||||
|
||||
int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code,
|
||||
int *value)
|
||||
{
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_input_hook) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
if (*type == EV_KEY && *code == KEY_VOLUMEDOWN) {
|
||||
int val = *value;
|
||||
pr_info("KEY_VOLUMEDOWN val: %d\n", val);
|
||||
if (val && is_boot_phase) {
|
||||
// key pressed, count it
|
||||
volumedown_pressed_count += 1;
|
||||
if (is_volumedown_enough(volumedown_pressed_count)) {
|
||||
stop_input_hook();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool ksu_is_safe_mode()
|
||||
{
|
||||
static bool safe_mode = false;
|
||||
if (safe_mode) {
|
||||
// don't need to check again, userspace may call multiple times
|
||||
return true;
|
||||
}
|
||||
|
||||
// stop hook first!
|
||||
stop_input_hook();
|
||||
|
||||
pr_info("volumedown_pressed_count: %d\n", volumedown_pressed_count);
|
||||
if (is_volumedown_enough(volumedown_pressed_count)) {
|
||||
// pressed over 3 times
|
||||
pr_info("KEY_VOLUMEDOWN pressed max times, safe mode detected!\n");
|
||||
safe_mode = true;
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
static int sys_execve_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
/*
|
||||
asmlinkage int sys_execve(const char __user *filenamei,
|
||||
const char __user *const __user *argv,
|
||||
const char __user *const __user *envp, struct pt_regs *regs)
|
||||
*/
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
const char __user *filename_user = (const char __user *)PT_REGS_PARM1(real_regs);
|
||||
const char __user *const __user *__argv = (const char __user *const __user *)PT_REGS_PARM2(real_regs);
|
||||
const char __user *const __user *__envp = (const char __user *const __user *)PT_REGS_PARM3(real_regs);
|
||||
char path[32];
|
||||
|
||||
if (!filename_user)
|
||||
return 0;
|
||||
|
||||
// filename stage
|
||||
if (ksu_copy_from_user_retry(path, filename_user, sizeof(path)))
|
||||
return 0;
|
||||
|
||||
path[sizeof(path) - 1] = '\0';
|
||||
|
||||
// not /system/bin/init, not /init, not /system/bin/app_process (64/32 thingy)
|
||||
// we dont care !!
|
||||
if (likely(strcmp(path, "/system/bin/init") && strcmp(path, "/init")
|
||||
&& !strstarts(path, "/system/bin/app_process") ))
|
||||
return 0;
|
||||
|
||||
// argv stage
|
||||
char argv1[32] = {0};
|
||||
// memzero_explicit(argv1, 32);
|
||||
if (__argv) {
|
||||
const char __user *arg1_user = NULL;
|
||||
// grab argv[1] pointer
|
||||
// this looks like
|
||||
/*
|
||||
* 0x1000 ./program << this is __argv
|
||||
* 0x1001 -o
|
||||
* 0x1002 arg
|
||||
*/
|
||||
if (ksu_copy_from_user_retry(&arg1_user, __argv + 1, sizeof(arg1_user)))
|
||||
goto no_argv1; // copy argv[1] pointer fail, probably no argv1 !!
|
||||
|
||||
if (arg1_user)
|
||||
ksu_copy_from_user_retry(argv1, arg1_user, sizeof(argv1));
|
||||
}
|
||||
|
||||
no_argv1:
|
||||
argv1[sizeof(argv1) - 1] = '\0';
|
||||
|
||||
// envp stage
|
||||
#define ENVP_MAX 256
|
||||
char envp[ENVP_MAX] = {0};
|
||||
char *dst = envp;
|
||||
size_t envp_len = 0;
|
||||
int i = 0; // to track user pointer offset from __envp
|
||||
|
||||
// memzero_explicit(envp, ENVP_MAX);
|
||||
|
||||
if (__envp) {
|
||||
do {
|
||||
const char __user *env_entry_user = NULL;
|
||||
// this is also like argv above
|
||||
/*
|
||||
* 0x1001 PATH=/bin
|
||||
* 0x1002 VARIABLE=value
|
||||
* 0x1002 some_more_env_var=1
|
||||
*/
|
||||
|
||||
// check if pointer exists
|
||||
if (ksu_copy_from_user_retry(&env_entry_user, __envp + i, sizeof(env_entry_user)))
|
||||
break;
|
||||
|
||||
// check if no more env entry
|
||||
if (!env_entry_user)
|
||||
break;
|
||||
|
||||
// probably redundant to while condition but ok
|
||||
if (envp_len >= ENVP_MAX - 1)
|
||||
break;
|
||||
|
||||
// copy strings from env_entry_user pointer that we collected
|
||||
// also break if failed
|
||||
if (ksu_copy_from_user_retry(dst, env_entry_user, ENVP_MAX - envp_len))
|
||||
break;
|
||||
|
||||
// get the length of that new copy above
|
||||
// get lngth of dst as far as ENVP_MAX - current collected envp_len
|
||||
size_t len = strnlen(dst, ENVP_MAX - envp_len);
|
||||
if (envp_len + len + 1 > ENVP_MAX)
|
||||
break; // if more than 255 bytes, bail
|
||||
|
||||
dst[len] = '\0';
|
||||
// collect total number of copied strings
|
||||
envp_len = envp_len + len + 1;
|
||||
// increment dst address since we need to put something on next iter
|
||||
dst = dst + len + 1;
|
||||
// pointer walk, __envp + i
|
||||
i++;
|
||||
} while (envp_len < ENVP_MAX);
|
||||
}
|
||||
|
||||
/*
|
||||
at this point, we shoul've collected envp from
|
||||
* 0x1001 PATH=/bin
|
||||
* 0x1002 VARIABLE=value
|
||||
* 0x1002 some_more_env_var=1
|
||||
to
|
||||
* 0x1234 PATH=/bin\0VARIABLE=value\0some_more_env_var=1\0\0\0\0
|
||||
*/
|
||||
|
||||
envp[ENVP_MAX - 1] = '\0';
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_info("%s: filename: %s argv[1]:%s envp_len: %zu\n", __func__, path, argv1, envp_len);
|
||||
#endif
|
||||
return ksu_handle_bprm_ksud(path, argv1, envp, envp_len);
|
||||
}
|
||||
|
||||
static int sys_read_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
unsigned int fd = PT_REGS_PARM1(real_regs);
|
||||
char __user **buf_ptr = (char __user **)&PT_REGS_PARM2(real_regs);
|
||||
size_t count_ptr = (size_t *)&PT_REGS_PARM3(real_regs);
|
||||
|
||||
return ksu_handle_sys_read(fd, buf_ptr, count_ptr);
|
||||
}
|
||||
|
||||
static int input_handle_event_handler_pre(struct kprobe *p,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
unsigned int *type = (unsigned int *)&PT_REGS_PARM2(regs);
|
||||
unsigned int *code = (unsigned int *)&PT_REGS_PARM3(regs);
|
||||
int *value = (int *)&PT_REGS_CCALL_PARM4(regs);
|
||||
return ksu_handle_input_handle_event(type, code, value);
|
||||
}
|
||||
|
||||
static struct kprobe execve_kp = {
|
||||
.symbol_name = SYS_EXECVE_SYMBOL,
|
||||
.pre_handler = sys_execve_handler_pre,
|
||||
};
|
||||
|
||||
static struct kprobe vfs_read_kp = {
|
||||
.symbol_name = SYS_READ_SYMBOL,
|
||||
.pre_handler = sys_read_handler_pre,
|
||||
};
|
||||
|
||||
static struct kprobe input_event_kp = {
|
||||
.symbol_name = "input_event",
|
||||
.pre_handler = input_handle_event_handler_pre,
|
||||
};
|
||||
|
||||
|
||||
static void do_stop_vfs_read_hook(struct work_struct *work)
|
||||
{
|
||||
unregister_kprobe(&vfs_read_kp);
|
||||
}
|
||||
|
||||
static void do_stop_execve_hook(struct work_struct *work)
|
||||
{
|
||||
unregister_kprobe(&execve_kp);
|
||||
}
|
||||
|
||||
static void do_stop_input_hook(struct work_struct *work)
|
||||
{
|
||||
unregister_kprobe(&input_event_kp);
|
||||
}
|
||||
#endif
|
||||
|
||||
static void stop_vfs_read_hook()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
bool ret = schedule_work(&stop_vfs_read_work);
|
||||
pr_info("unregister vfs_read kprobe: %d!\n", ret);
|
||||
#else
|
||||
ksu_vfs_read_hook = false;
|
||||
pr_info("stop vfs_read_hook\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
static void stop_execve_hook()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
bool ret = schedule_work(&stop_execve_hook_work);
|
||||
pr_info("unregister execve kprobe: %d!\n", ret);
|
||||
#else
|
||||
pr_info("stop execve_hook\n");
|
||||
#endif
|
||||
ksu_execveat_hook = false;
|
||||
}
|
||||
|
||||
static void stop_input_hook()
|
||||
{
|
||||
static bool input_hook_stopped = false;
|
||||
if (input_hook_stopped) {
|
||||
return;
|
||||
}
|
||||
input_hook_stopped = true;
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
bool ret = schedule_work(&stop_input_hook_work);
|
||||
pr_info("unregister input kprobe: %d!\n", ret);
|
||||
#else
|
||||
ksu_input_hook = false;
|
||||
pr_info("stop input_hook\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
// ksud: module support
|
||||
void ksu_ksud_init()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
int ret;
|
||||
|
||||
ret = register_kprobe(&execve_kp);
|
||||
pr_info("ksud: execve_kp: %d\n", ret);
|
||||
|
||||
ret = register_kprobe(&vfs_read_kp);
|
||||
pr_info("ksud: vfs_read_kp: %d\n", ret);
|
||||
|
||||
ret = register_kprobe(&input_event_kp);
|
||||
pr_info("ksud: input_event_kp: %d\n", ret);
|
||||
|
||||
INIT_WORK(&stop_vfs_read_work, do_stop_vfs_read_hook);
|
||||
INIT_WORK(&stop_execve_hook_work, do_stop_execve_hook);
|
||||
INIT_WORK(&stop_input_hook_work, do_stop_input_hook);
|
||||
#endif
|
||||
}
|
||||
|
||||
void ksu_ksud_exit()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
unregister_kprobe(&execve_kp);
|
||||
// this should be done before unregister vfs_read_kp
|
||||
// unregister_kprobe(&vfs_read_kp);
|
||||
unregister_kprobe(&input_event_kp);
|
||||
#endif
|
||||
|
||||
is_boot_phase = false;
|
||||
}
|
||||
15
kernel/ksud.h
Normal file
15
kernel/ksud.h
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
#ifndef __KSU_H_KSUD
|
||||
#define __KSU_H_KSUD
|
||||
|
||||
#define KSUD_PATH "/data/adb/ksud"
|
||||
|
||||
void on_post_fs_data(void);
|
||||
|
||||
bool ksu_is_safe_mode(void);
|
||||
|
||||
extern u32 ksu_devpts_sid;
|
||||
|
||||
extern bool ksu_execveat_hook __read_mostly;
|
||||
extern int ksu_handle_pre_ksud(const char *filename);
|
||||
|
||||
#endif
|
||||
42
kernel/manager.h
Normal file
42
kernel/manager.h
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
#ifndef __KSU_H_KSU_MANAGER
|
||||
#define __KSU_H_KSU_MANAGER
|
||||
|
||||
#include <linux/cred.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#define KSU_INVALID_UID -1
|
||||
|
||||
extern uid_t ksu_manager_uid; // DO NOT DIRECT USE
|
||||
|
||||
extern bool ksu_is_any_manager(uid_t uid);
|
||||
extern void ksu_add_manager(uid_t uid, int signature_index);
|
||||
extern void ksu_remove_manager(uid_t uid);
|
||||
extern int ksu_get_manager_signature_index(uid_t uid);
|
||||
|
||||
static inline bool ksu_is_manager_uid_valid()
|
||||
{
|
||||
return ksu_manager_uid != KSU_INVALID_UID;
|
||||
}
|
||||
|
||||
static inline bool is_manager()
|
||||
{
|
||||
return unlikely(ksu_is_any_manager(current_uid().val) ||
|
||||
(ksu_manager_uid != KSU_INVALID_UID && ksu_manager_uid == current_uid().val));
|
||||
}
|
||||
|
||||
static inline uid_t ksu_get_manager_uid()
|
||||
{
|
||||
return ksu_manager_uid;
|
||||
}
|
||||
|
||||
static inline void ksu_set_manager_uid(uid_t uid)
|
||||
{
|
||||
ksu_manager_uid = uid;
|
||||
}
|
||||
|
||||
static inline void ksu_invalidate_manager_uid()
|
||||
{
|
||||
ksu_manager_uid = KSU_INVALID_UID;
|
||||
}
|
||||
|
||||
#endif
|
||||
13
kernel/manager_sign.h
Normal file
13
kernel/manager_sign.h
Normal file
|
|
@ -0,0 +1,13 @@
|
|||
#ifndef MANAGER_SIGN_H
|
||||
#define MANAGER_SIGN_H
|
||||
|
||||
// ShirkNeko/SukiSU
|
||||
#define EXPECTED_SIZE_SHIRKNEKO 0x35c
|
||||
#define EXPECTED_HASH_SHIRKNEKO "947ae944f3de4ed4c21a7e4f7953ecf351bfa2b36239da37a34111ad29993eef"
|
||||
|
||||
// Dynamic Sign
|
||||
#define EXPECTED_SIZE_OTHER 0x300
|
||||
#define EXPECTED_HASH_OTHER "0000000000000000000000000000000000000000000000000000000000000000"
|
||||
|
||||
|
||||
#endif /* MANAGER_SIGN_H */
|
||||
16
kernel/selinux/Makefile
Normal file
16
kernel/selinux/Makefile
Normal file
|
|
@ -0,0 +1,16 @@
|
|||
obj-y += selinux.o
|
||||
obj-y += sepolicy.o
|
||||
obj-y += rules.o
|
||||
|
||||
ifeq ($(shell grep -q " current_sid(void)" $(srctree)/security/selinux/include/objsec.h; echo $$?),0)
|
||||
ccflags-y += -DKSU_COMPAT_HAS_CURRENT_SID
|
||||
endif
|
||||
|
||||
ifeq ($(shell grep -q "struct selinux_state " $(srctree)/security/selinux/include/security.h; echo $$?),0)
|
||||
ccflags-y += -DKSU_COMPAT_HAS_SELINUX_STATE
|
||||
endif
|
||||
|
||||
ccflags-y += -Wno-implicit-function-declaration -Wno-strict-prototypes -Wno-int-conversion
|
||||
ccflags-y += -Wno-declaration-after-statement -Wno-unused-function
|
||||
ccflags-y += -I$(srctree)/security/selinux -I$(srctree)/security/selinux/include
|
||||
ccflags-y += -I$(objtree)/security/selinux -include $(srctree)/include/uapi/asm-generic/errno.h
|
||||
545
kernel/selinux/rules.c
Normal file
545
kernel/selinux/rules.c
Normal file
|
|
@ -0,0 +1,545 @@
|
|||
#include <linux/uaccess.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/version.h>
|
||||
|
||||
#include "../klog.h" // IWYU pragma: keep
|
||||
#include "selinux.h"
|
||||
#include "sepolicy.h"
|
||||
#include "ss/services.h"
|
||||
#include "linux/lsm_audit.h"
|
||||
#include "xfrm.h"
|
||||
|
||||
#define SELINUX_POLICY_INSTEAD_SELINUX_SS
|
||||
|
||||
#define KERNEL_SU_DOMAIN "su"
|
||||
#define KERNEL_SU_FILE "ksu_file"
|
||||
#define KERNEL_EXEC_TYPE "ksu_exec"
|
||||
#define ALL NULL
|
||||
|
||||
static struct policydb *get_policydb(void)
|
||||
{
|
||||
struct policydb *db;
|
||||
struct selinux_policy *policy = selinux_state.policy;
|
||||
db = &policy->policydb;
|
||||
return db;
|
||||
}
|
||||
|
||||
static DEFINE_MUTEX(ksu_rules);
|
||||
|
||||
void apply_kernelsu_rules()
|
||||
{
|
||||
struct policydb *db;
|
||||
|
||||
if (!getenforce()) {
|
||||
pr_info("SELinux permissive or disabled, apply rules!\n");
|
||||
}
|
||||
|
||||
mutex_lock(&ksu_rules);
|
||||
|
||||
db = get_policydb();
|
||||
|
||||
ksu_permissive(db, KERNEL_SU_DOMAIN);
|
||||
ksu_typeattribute(db, KERNEL_SU_DOMAIN, "mlstrustedsubject");
|
||||
ksu_typeattribute(db, KERNEL_SU_DOMAIN, "netdomain");
|
||||
ksu_typeattribute(db, KERNEL_SU_DOMAIN, "bluetoothdomain");
|
||||
|
||||
// Create unconstrained file type
|
||||
ksu_type(db, KERNEL_SU_FILE, "file_type");
|
||||
ksu_typeattribute(db, KERNEL_SU_FILE, "mlstrustedobject");
|
||||
ksu_allow(db, ALL, KERNEL_SU_FILE, ALL, ALL);
|
||||
|
||||
// allow all!
|
||||
ksu_allow(db, KERNEL_SU_DOMAIN, ALL, ALL, ALL);
|
||||
|
||||
// allow us do any ioctl
|
||||
if (db->policyvers >= POLICYDB_VERSION_XPERMS_IOCTL) {
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "blk_file", ALL);
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "fifo_file", ALL);
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "chr_file", ALL);
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "file", ALL);
|
||||
}
|
||||
|
||||
// we need to save allowlist in /data/adb/ksu
|
||||
ksu_allow(db, "kernel", "adb_data_file", "dir", ALL);
|
||||
ksu_allow(db, "kernel", "adb_data_file", "file", ALL);
|
||||
// we need to search /data/app
|
||||
ksu_allow(db, "kernel", "apk_data_file", "file", "open");
|
||||
ksu_allow(db, "kernel", "apk_data_file", "dir", "open");
|
||||
ksu_allow(db, "kernel", "apk_data_file", "dir", "read");
|
||||
ksu_allow(db, "kernel", "apk_data_file", "dir", "search");
|
||||
// we may need to do mount on shell
|
||||
ksu_allow(db, "kernel", "shell_data_file", "file", ALL);
|
||||
// we need to read /data/system/packages.list
|
||||
ksu_allow(db, "kernel", "kernel", "capability", "dac_override");
|
||||
// Android 10+:
|
||||
// http://aospxref.com/android-12.0.0_r3/xref/system/sepolicy/private/file_contexts#512
|
||||
ksu_allow(db, "kernel", "packages_list_file", "file", ALL);
|
||||
// Kernel 4.4
|
||||
ksu_allow(db, "kernel", "packages_list_file", "dir", ALL);
|
||||
// Android 9-:
|
||||
// http://aospxref.com/android-9.0.0_r61/xref/system/sepolicy/private/file_contexts#360
|
||||
ksu_allow(db, "kernel", "system_data_file", "file", ALL);
|
||||
ksu_allow(db, "kernel", "system_data_file", "dir", ALL);
|
||||
// our ksud triggered by init
|
||||
ksu_allow(db, "init", "adb_data_file", "file", ALL);
|
||||
ksu_allow(db, "init", "adb_data_file", "dir", ALL); // #1289
|
||||
ksu_allow(db, "init", KERNEL_SU_DOMAIN, ALL, ALL);
|
||||
// we need to umount modules in zygote
|
||||
ksu_allow(db, "zygote", "adb_data_file", "dir", "search");
|
||||
|
||||
// copied from Magisk rules
|
||||
// suRights
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "dir", "search");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "dir", "read");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "file", "open");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "file", "read");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "process", "getattr");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "process", "sigchld");
|
||||
|
||||
// allowLog
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "dir", "search");
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "file", "read");
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "file", "open");
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "file", "getattr");
|
||||
|
||||
// dumpsys
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fd", "use");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "write");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "read");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "open");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "getattr");
|
||||
|
||||
// bootctl
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "dir", "search");
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "file", "read");
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "file", "open");
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "process",
|
||||
"getattr");
|
||||
|
||||
// For mounting loop devices, mirrors, tmpfs
|
||||
ksu_allow(db, "kernel", ALL, "file", "read");
|
||||
ksu_allow(db, "kernel", ALL, "file", "write");
|
||||
|
||||
// Allow all binder transactions
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "binder", ALL);
|
||||
|
||||
// Allow system server kill su process
|
||||
ksu_allow(db, "system_server", KERNEL_SU_DOMAIN, "process", "getpgid");
|
||||
ksu_allow(db, "system_server", KERNEL_SU_DOMAIN, "process", "sigkill");
|
||||
|
||||
// https://android-review.googlesource.com/c/platform/system/logging/+/3725346
|
||||
ksu_dontaudit(db, "untrusted_app", KERNEL_SU_DOMAIN, "dir", "getattr");
|
||||
|
||||
mutex_unlock(&ksu_rules);
|
||||
}
|
||||
|
||||
#define MAX_SEPOL_LEN 128
|
||||
|
||||
#define CMD_NORMAL_PERM 1
|
||||
#define CMD_XPERM 2
|
||||
#define CMD_TYPE_STATE 3
|
||||
#define CMD_TYPE 4
|
||||
#define CMD_TYPE_ATTR 5
|
||||
#define CMD_ATTR 6
|
||||
#define CMD_TYPE_TRANSITION 7
|
||||
#define CMD_TYPE_CHANGE 8
|
||||
#define CMD_GENFSCON 9
|
||||
|
||||
#ifdef CONFIG_64BIT
|
||||
struct sepol_data {
|
||||
u32 cmd;
|
||||
u32 subcmd;
|
||||
u64 field_sepol1;
|
||||
u64 field_sepol2;
|
||||
u64 field_sepol3;
|
||||
u64 field_sepol4;
|
||||
u64 field_sepol5;
|
||||
u64 field_sepol6;
|
||||
u64 field_sepol7;
|
||||
};
|
||||
#ifdef CONFIG_COMPAT
|
||||
extern bool ksu_is_compat __read_mostly;
|
||||
struct sepol_compat_data {
|
||||
u32 cmd;
|
||||
u32 subcmd;
|
||||
u32 field_sepol1;
|
||||
u32 field_sepol2;
|
||||
u32 field_sepol3;
|
||||
u32 field_sepol4;
|
||||
u32 field_sepol5;
|
||||
u32 field_sepol6;
|
||||
u32 field_sepol7;
|
||||
};
|
||||
#endif // CONFIG_COMPAT
|
||||
#else
|
||||
struct sepol_data {
|
||||
u32 cmd;
|
||||
u32 subcmd;
|
||||
u32 field_sepol1;
|
||||
u32 field_sepol2;
|
||||
u32 field_sepol3;
|
||||
u32 field_sepol4;
|
||||
u32 field_sepol5;
|
||||
u32 field_sepol6;
|
||||
u32 field_sepol7;
|
||||
};
|
||||
#endif // CONFIG_64BIT
|
||||
|
||||
static int get_object(char *buf, char __user *user_object, size_t buf_sz,
|
||||
char **object)
|
||||
{
|
||||
if (!user_object) {
|
||||
*object = ALL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (strncpy_from_user(buf, user_object, buf_sz) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
*object = buf;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// reset avc cache table, otherwise the new rules will not take effect if already denied
|
||||
static void reset_avc_cache()
|
||||
{
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 4, 0))
|
||||
avc_ss_reset(0);
|
||||
selnl_notify_policyload(0);
|
||||
selinux_status_update_policyload(0);
|
||||
#else
|
||||
struct selinux_avc *avc = selinux_state.avc;
|
||||
avc_ss_reset(avc, 0);
|
||||
selnl_notify_policyload(0);
|
||||
selinux_status_update_policyload(&selinux_state, 0);
|
||||
#endif
|
||||
selinux_xfrm_notify_policyload();
|
||||
}
|
||||
|
||||
int handle_sepolicy(unsigned long arg3, void __user *arg4)
|
||||
{
|
||||
struct policydb *db;
|
||||
|
||||
if (!arg4) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!getenforce()) {
|
||||
pr_info("SELinux permissive or disabled when handle policy!\n");
|
||||
}
|
||||
|
||||
u32 cmd, subcmd;
|
||||
char __user *sepol1, *sepol2, *sepol3, *sepol4, *sepol5, *sepol6, *sepol7;
|
||||
|
||||
#if defined(CONFIG_64BIT) && defined(CONFIG_COMPAT)
|
||||
if (unlikely(ksu_is_compat)) {
|
||||
struct sepol_compat_data compat_data;
|
||||
if (copy_from_user(&compat_data, arg4, sizeof(struct sepol_compat_data))) {
|
||||
pr_err("sepol: copy sepol_data failed.\n");
|
||||
return -1;
|
||||
}
|
||||
sepol1 = compat_ptr(compat_data.field_sepol1);
|
||||
sepol2 = compat_ptr(compat_data.field_sepol2);
|
||||
sepol3 = compat_ptr(compat_data.field_sepol3);
|
||||
sepol4 = compat_ptr(compat_data.field_sepol4);
|
||||
sepol5 = compat_ptr(compat_data.field_sepol5);
|
||||
sepol6 = compat_ptr(compat_data.field_sepol6);
|
||||
sepol7 = compat_ptr(compat_data.field_sepol7);
|
||||
cmd = compat_data.cmd;
|
||||
subcmd = compat_data.subcmd;
|
||||
} else {
|
||||
struct sepol_data data;
|
||||
if (copy_from_user(&data, arg4, sizeof(struct sepol_data))) {
|
||||
pr_err("sepol: copy sepol_data failed.\n");
|
||||
return -1;
|
||||
}
|
||||
sepol1 = data.field_sepol1;
|
||||
sepol2 = data.field_sepol2;
|
||||
sepol3 = data.field_sepol3;
|
||||
sepol4 = data.field_sepol4;
|
||||
sepol5 = data.field_sepol5;
|
||||
sepol6 = data.field_sepol6;
|
||||
sepol7 = data.field_sepol7;
|
||||
cmd = data.cmd;
|
||||
subcmd = data.subcmd;
|
||||
}
|
||||
#else
|
||||
// basically for full native, say (64BIT=y COMPAT=n) || (64BIT=n)
|
||||
struct sepol_data data;
|
||||
if (copy_from_user(&data, arg4, sizeof(struct sepol_data))) {
|
||||
pr_err("sepol: copy sepol_data failed.\n");
|
||||
return -1;
|
||||
}
|
||||
sepol1 = data.field_sepol1;
|
||||
sepol2 = data.field_sepol2;
|
||||
sepol3 = data.field_sepol3;
|
||||
sepol4 = data.field_sepol4;
|
||||
sepol5 = data.field_sepol5;
|
||||
sepol6 = data.field_sepol6;
|
||||
sepol7 = data.field_sepol7;
|
||||
cmd = data.cmd;
|
||||
subcmd = data.subcmd;
|
||||
#endif
|
||||
|
||||
mutex_lock(&ksu_rules);
|
||||
|
||||
db = get_policydb();
|
||||
|
||||
int ret = -1;
|
||||
if (cmd == CMD_NORMAL_PERM) {
|
||||
char src_buf[MAX_SEPOL_LEN];
|
||||
char tgt_buf[MAX_SEPOL_LEN];
|
||||
char cls_buf[MAX_SEPOL_LEN];
|
||||
char perm_buf[MAX_SEPOL_LEN];
|
||||
|
||||
char *s, *t, *c, *p;
|
||||
if (get_object(src_buf, sepol1, sizeof(src_buf), &s) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (get_object(tgt_buf, sepol2, sizeof(tgt_buf), &t) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (get_object(cls_buf, sepol3, sizeof(cls_buf), &c) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (get_object(perm_buf, sepol4, sizeof(perm_buf), &p) <
|
||||
0) {
|
||||
pr_err("sepol: copy perm failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_allow(db, s, t, c, p);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_deny(db, s, t, c, p);
|
||||
} else if (subcmd == 3) {
|
||||
success = ksu_auditallow(db, s, t, c, p);
|
||||
} else if (subcmd == 4) {
|
||||
success = ksu_dontaudit(db, s, t, c, p);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
ret = success ? 0 : -1;
|
||||
|
||||
} else if (cmd == CMD_XPERM) {
|
||||
char src_buf[MAX_SEPOL_LEN];
|
||||
char tgt_buf[MAX_SEPOL_LEN];
|
||||
char cls_buf[MAX_SEPOL_LEN];
|
||||
|
||||
char __maybe_unused
|
||||
operation[MAX_SEPOL_LEN]; // it is always ioctl now!
|
||||
char perm_set[MAX_SEPOL_LEN];
|
||||
|
||||
char *s, *t, *c;
|
||||
if (get_object(src_buf, sepol1, sizeof(src_buf), &s) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (get_object(tgt_buf, sepol2, sizeof(tgt_buf), &t) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (get_object(cls_buf, sepol3, sizeof(cls_buf), &c) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(operation, sepol4,
|
||||
sizeof(operation)) < 0) {
|
||||
pr_err("sepol: copy operation failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(perm_set, sepol5, sizeof(perm_set)) <
|
||||
0) {
|
||||
pr_err("sepol: copy perm_set failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_allowxperm(db, s, t, c, perm_set);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_auditallowxperm(db, s, t, c, perm_set);
|
||||
} else if (subcmd == 3) {
|
||||
success = ksu_dontauditxperm(db, s, t, c, perm_set);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
ret = success ? 0 : -1;
|
||||
} else if (cmd == CMD_TYPE_STATE) {
|
||||
char src[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(src, sepol1, sizeof(src)) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_permissive(db, src);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_enforce(db, src);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
if (success)
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_TYPE || cmd == CMD_TYPE_ATTR) {
|
||||
char type[MAX_SEPOL_LEN];
|
||||
char attr[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(type, sepol1, sizeof(type)) < 0) {
|
||||
pr_err("sepol: copy type failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(attr, sepol2, sizeof(attr)) < 0) {
|
||||
pr_err("sepol: copy attr failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (cmd == CMD_TYPE) {
|
||||
success = ksu_type(db, type, attr);
|
||||
} else {
|
||||
success = ksu_typeattribute(db, type, attr);
|
||||
}
|
||||
if (!success) {
|
||||
pr_err("sepol: %d failed.\n", cmd);
|
||||
goto exit;
|
||||
}
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_ATTR) {
|
||||
char attr[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(attr, sepol1, sizeof(attr)) < 0) {
|
||||
pr_err("sepol: copy attr failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (!ksu_attribute(db, attr)) {
|
||||
pr_err("sepol: %d failed.\n", cmd);
|
||||
goto exit;
|
||||
}
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_TYPE_TRANSITION) {
|
||||
char src[MAX_SEPOL_LEN];
|
||||
char tgt[MAX_SEPOL_LEN];
|
||||
char cls[MAX_SEPOL_LEN];
|
||||
char default_type[MAX_SEPOL_LEN];
|
||||
char object[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(src, sepol1, sizeof(src)) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(tgt, sepol2, sizeof(tgt)) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(cls, sepol3, sizeof(cls)) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(default_type, sepol4,
|
||||
sizeof(default_type)) < 0) {
|
||||
pr_err("sepol: copy default_type failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
char *real_object;
|
||||
if (sepol5 == NULL) {
|
||||
real_object = NULL;
|
||||
} else {
|
||||
if (strncpy_from_user(object, sepol5,
|
||||
sizeof(object)) < 0) {
|
||||
pr_err("sepol: copy object failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
real_object = object;
|
||||
}
|
||||
|
||||
bool success = ksu_type_transition(db, src, tgt, cls,
|
||||
default_type, real_object);
|
||||
if (success)
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_TYPE_CHANGE) {
|
||||
char src[MAX_SEPOL_LEN];
|
||||
char tgt[MAX_SEPOL_LEN];
|
||||
char cls[MAX_SEPOL_LEN];
|
||||
char default_type[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(src, sepol1, sizeof(src)) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(tgt, sepol2, sizeof(tgt)) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(cls, sepol3, sizeof(cls)) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(default_type, sepol4,
|
||||
sizeof(default_type)) < 0) {
|
||||
pr_err("sepol: copy default_type failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_type_change(db, src, tgt, cls,
|
||||
default_type);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_type_member(db, src, tgt, cls,
|
||||
default_type);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
if (success)
|
||||
ret = 0;
|
||||
} else if (cmd == CMD_GENFSCON) {
|
||||
char name[MAX_SEPOL_LEN];
|
||||
char path[MAX_SEPOL_LEN];
|
||||
char context[MAX_SEPOL_LEN];
|
||||
if (strncpy_from_user(name, sepol1, sizeof(name)) < 0) {
|
||||
pr_err("sepol: copy name failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(path, sepol2, sizeof(path)) < 0) {
|
||||
pr_err("sepol: copy path failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(context, sepol3, sizeof(context)) <
|
||||
0) {
|
||||
pr_err("sepol: copy context failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (!ksu_genfscon(db, name, path, context)) {
|
||||
pr_err("sepol: %d failed.\n", cmd);
|
||||
goto exit;
|
||||
}
|
||||
ret = 0;
|
||||
} else {
|
||||
pr_err("sepol: unknown cmd: %d\n", cmd);
|
||||
}
|
||||
|
||||
exit:
|
||||
mutex_unlock(&ksu_rules);
|
||||
|
||||
// only allow and xallow needs to reset avc cache, but we cannot do that because
|
||||
// we are in atomic context. so we just reset it every time.
|
||||
reset_avc_cache();
|
||||
|
||||
return ret;
|
||||
}
|
||||
130
kernel/selinux/selinux.c
Normal file
130
kernel/selinux/selinux.c
Normal file
|
|
@ -0,0 +1,130 @@
|
|||
#include "selinux.h"
|
||||
#include "objsec.h"
|
||||
#include "linux/version.h"
|
||||
#include "../klog.h" // IWYU pragma: keep
|
||||
|
||||
#define KERNEL_SU_DOMAIN "u:r:su:s0"
|
||||
|
||||
static int transive_to_domain(const char *domain)
|
||||
{
|
||||
struct cred *cred;
|
||||
struct task_security_struct *tsec;
|
||||
u32 sid;
|
||||
int error;
|
||||
|
||||
cred = (struct cred *)__task_cred(current);
|
||||
|
||||
tsec = cred->security;
|
||||
if (!tsec) {
|
||||
pr_err("tsec == NULL!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
error = security_secctx_to_secid(domain, strlen(domain), &sid);
|
||||
if (error) {
|
||||
pr_info("security_secctx_to_secid %s -> sid: %d, error: %d\n",
|
||||
domain, sid, error);
|
||||
}
|
||||
if (!error) {
|
||||
tsec->sid = sid;
|
||||
tsec->create_sid = 0;
|
||||
tsec->keycreate_sid = 0;
|
||||
tsec->sockcreate_sid = 0;
|
||||
}
|
||||
return error;
|
||||
}
|
||||
|
||||
void setup_selinux(const char *domain)
|
||||
{
|
||||
if (transive_to_domain(domain)) {
|
||||
pr_err("transive domain failed.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* we didn't need this now, we have change selinux rules when boot!
|
||||
if (!is_domain_permissive) {
|
||||
if (set_domain_permissive() == 0) {
|
||||
is_domain_permissive = true;
|
||||
}
|
||||
}*/
|
||||
}
|
||||
|
||||
void setenforce(bool enforce)
|
||||
{
|
||||
#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
|
||||
selinux_state.enforcing = enforce;
|
||||
#endif
|
||||
}
|
||||
|
||||
bool getenforce()
|
||||
{
|
||||
#ifdef CONFIG_SECURITY_SELINUX_DISABLE
|
||||
if (selinux_state.disabled) {
|
||||
return false;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
|
||||
return selinux_state.enforcing;
|
||||
#else
|
||||
return true;
|
||||
#endif
|
||||
}
|
||||
|
||||
#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)) && \
|
||||
!defined(KSU_COMPAT_HAS_CURRENT_SID)
|
||||
/*
|
||||
* get the subjective security ID of the current task
|
||||
*/
|
||||
static inline u32 current_sid(void)
|
||||
{
|
||||
const struct task_security_struct *tsec = current_security();
|
||||
|
||||
return tsec->sid;
|
||||
}
|
||||
#endif
|
||||
|
||||
bool is_ksu_domain()
|
||||
{
|
||||
char *domain;
|
||||
u32 seclen;
|
||||
bool result;
|
||||
int err = security_secid_to_secctx(current_sid(), &domain, &seclen);
|
||||
if (err) {
|
||||
return false;
|
||||
}
|
||||
result = strncmp(KERNEL_SU_DOMAIN, domain, seclen) == 0;
|
||||
security_release_secctx(domain, seclen);
|
||||
return result;
|
||||
}
|
||||
|
||||
bool is_zygote(void *sec)
|
||||
{
|
||||
struct task_security_struct *tsec = (struct task_security_struct *)sec;
|
||||
if (!tsec) {
|
||||
return false;
|
||||
}
|
||||
char *domain;
|
||||
u32 seclen;
|
||||
bool result;
|
||||
int err = security_secid_to_secctx(tsec->sid, &domain, &seclen);
|
||||
if (err) {
|
||||
return false;
|
||||
}
|
||||
result = strncmp("u:r:zygote:s0", domain, seclen) == 0;
|
||||
security_release_secctx(domain, seclen);
|
||||
return result;
|
||||
}
|
||||
|
||||
#define DEVPTS_DOMAIN "u:object_r:ksu_file:s0"
|
||||
|
||||
u32 ksu_get_devpts_sid()
|
||||
{
|
||||
u32 devpts_sid = 0;
|
||||
int err = security_secctx_to_secid(DEVPTS_DOMAIN, strlen(DEVPTS_DOMAIN),
|
||||
&devpts_sid);
|
||||
if (err) {
|
||||
pr_info("get devpts sid err %d\n", err);
|
||||
}
|
||||
return devpts_sid;
|
||||
}
|
||||
21
kernel/selinux/selinux.h
Normal file
21
kernel/selinux/selinux.h
Normal file
|
|
@ -0,0 +1,21 @@
|
|||
#ifndef __KSU_H_SELINUX
|
||||
#define __KSU_H_SELINUX
|
||||
|
||||
#include "linux/types.h"
|
||||
#include "linux/version.h"
|
||||
|
||||
void setup_selinux(const char *);
|
||||
|
||||
void setenforce(bool);
|
||||
|
||||
bool getenforce();
|
||||
|
||||
bool is_ksu_domain();
|
||||
|
||||
bool is_zygote(void *cred);
|
||||
|
||||
void apply_kernelsu_rules();
|
||||
|
||||
u32 ksu_get_devpts_sid();
|
||||
|
||||
#endif
|
||||
853
kernel/selinux/sepolicy.c
Normal file
853
kernel/selinux/sepolicy.c
Normal file
|
|
@ -0,0 +1,853 @@
|
|||
#include <linux/gfp.h>
|
||||
#include <linux/printk.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/version.h>
|
||||
|
||||
#include "sepolicy.h"
|
||||
#include "../klog.h" // IWYU pragma: keep
|
||||
#include "ss/symtab.h"
|
||||
#include "../kernel_compat.h" // Add check Huawei Device
|
||||
|
||||
#define KSU_SUPPORT_ADD_TYPE
|
||||
|
||||
//////////////////////////////////////////////////////
|
||||
// Declaration
|
||||
//////////////////////////////////////////////////////
|
||||
|
||||
static struct avtab_node *get_avtab_node(struct policydb *db,
|
||||
struct avtab_key *key,
|
||||
struct avtab_extended_perms *xperms);
|
||||
|
||||
static bool add_rule(struct policydb *db, const char *s, const char *t,
|
||||
const char *c, const char *p, int effect, bool invert);
|
||||
|
||||
static void add_rule_raw(struct policydb *db, struct type_datum *src,
|
||||
struct type_datum *tgt, struct class_datum *cls,
|
||||
struct perm_datum *perm, int effect, bool invert);
|
||||
|
||||
static void add_xperm_rule_raw(struct policydb *db, struct type_datum *src,
|
||||
struct type_datum *tgt, struct class_datum *cls,
|
||||
uint16_t low, uint16_t high, int effect,
|
||||
bool invert);
|
||||
static bool add_xperm_rule(struct policydb *db, const char *s, const char *t,
|
||||
const char *c, const char *range, int effect,
|
||||
bool invert);
|
||||
|
||||
static bool add_type_rule(struct policydb *db, const char *s, const char *t,
|
||||
const char *c, const char *d, int effect);
|
||||
|
||||
static bool add_filename_trans(struct policydb *db, const char *s,
|
||||
const char *t, const char *c, const char *d,
|
||||
const char *o);
|
||||
|
||||
static bool add_genfscon(struct policydb *db, const char *fs_name,
|
||||
const char *path, const char *context);
|
||||
|
||||
static bool add_type(struct policydb *db, const char *type_name, bool attr);
|
||||
|
||||
static bool set_type_state(struct policydb *db, const char *type_name,
|
||||
bool permissive);
|
||||
|
||||
static void add_typeattribute_raw(struct policydb *db, struct type_datum *type,
|
||||
struct type_datum *attr);
|
||||
|
||||
static bool add_typeattribute(struct policydb *db, const char *type,
|
||||
const char *attr);
|
||||
|
||||
//////////////////////////////////////////////////////
|
||||
// Implementation
|
||||
//////////////////////////////////////////////////////
|
||||
|
||||
// Invert is adding rules for auditdeny; in other cases, invert is removing
|
||||
// rules
|
||||
#define strip_av(effect, invert) ((effect == AVTAB_AUDITDENY) == !invert)
|
||||
|
||||
#define ksu_hash_for_each(node_ptr, n_slot, cur) \
|
||||
int i; \
|
||||
for (i = 0; i < n_slot; ++i) \
|
||||
for (cur = node_ptr[i]; cur; cur = cur->next)
|
||||
|
||||
// htable is a struct instead of pointer above 5.8.0:
|
||||
// https://elixir.bootlin.com/linux/v5.8-rc1/source/security/selinux/ss/symtab.h
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
|
||||
#define ksu_hashtab_for_each(htab, cur) \
|
||||
ksu_hash_for_each(htab.htable, htab.size, cur)
|
||||
#else
|
||||
#define ksu_hashtab_for_each(htab, cur) \
|
||||
ksu_hash_for_each(htab->htable, htab->size, cur)
|
||||
#endif
|
||||
|
||||
// symtab_search is introduced on 5.9.0:
|
||||
// https://elixir.bootlin.com/linux/v5.9-rc1/source/security/selinux/ss/symtab.h
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 9, 0)
|
||||
#define symtab_search(s, name) hashtab_search((s)->table, name)
|
||||
#define symtab_insert(s, name, datum) hashtab_insert((s)->table, name, datum)
|
||||
#endif
|
||||
|
||||
#define avtab_for_each(avtab, cur) \
|
||||
ksu_hash_for_each(avtab.htable, avtab.nslot, cur);
|
||||
|
||||
static struct avtab_node *get_avtab_node(struct policydb *db,
|
||||
struct avtab_key *key,
|
||||
struct avtab_extended_perms *xperms)
|
||||
{
|
||||
struct avtab_node *node;
|
||||
|
||||
/* AVTAB_XPERMS entries are not necessarily unique */
|
||||
if (key->specified & AVTAB_XPERMS) {
|
||||
bool match = false;
|
||||
node = avtab_search_node(&db->te_avtab, key);
|
||||
while (node) {
|
||||
if ((node->datum.u.xperms->specified ==
|
||||
xperms->specified) &&
|
||||
(node->datum.u.xperms->driver == xperms->driver)) {
|
||||
match = true;
|
||||
break;
|
||||
}
|
||||
node = avtab_search_node_next(node, key->specified);
|
||||
}
|
||||
if (!match)
|
||||
node = NULL;
|
||||
} else {
|
||||
node = avtab_search_node(&db->te_avtab, key);
|
||||
}
|
||||
|
||||
if (!node) {
|
||||
struct avtab_datum avdatum = {};
|
||||
/*
|
||||
* AUDITDENY, aka DONTAUDIT, are &= assigned, versus |= for
|
||||
* others. Initialize the data accordingly.
|
||||
*/
|
||||
if (key->specified & AVTAB_XPERMS) {
|
||||
avdatum.u.xperms = xperms;
|
||||
} else {
|
||||
avdatum.u.data =
|
||||
key->specified == AVTAB_AUDITDENY ? ~0U : 0U;
|
||||
}
|
||||
/* this is used to get the node - insertion is actually unique */
|
||||
node = avtab_insert_nonunique(&db->te_avtab, key, &avdatum);
|
||||
|
||||
int grow_size = sizeof(struct avtab_key);
|
||||
grow_size += sizeof(struct avtab_datum);
|
||||
if (key->specified & AVTAB_XPERMS) {
|
||||
grow_size += sizeof(u8);
|
||||
grow_size += sizeof(u8);
|
||||
grow_size += sizeof(u32) *
|
||||
ARRAY_SIZE(avdatum.u.xperms->perms.p);
|
||||
}
|
||||
db->len += grow_size;
|
||||
}
|
||||
|
||||
return node;
|
||||
}
|
||||
|
||||
static bool add_rule(struct policydb *db, const char *s, const char *t,
|
||||
const char *c, const char *p, int effect, bool invert)
|
||||
{
|
||||
struct type_datum *src = NULL, *tgt = NULL;
|
||||
struct class_datum *cls = NULL;
|
||||
struct perm_datum *perm = NULL;
|
||||
|
||||
if (s) {
|
||||
src = symtab_search(&db->p_types, s);
|
||||
if (src == NULL) {
|
||||
pr_info("source type %s does not exist\n", s);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (t) {
|
||||
tgt = symtab_search(&db->p_types, t);
|
||||
if (tgt == NULL) {
|
||||
pr_info("target type %s does not exist\n", t);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (c) {
|
||||
cls = symtab_search(&db->p_classes, c);
|
||||
if (cls == NULL) {
|
||||
pr_info("class %s does not exist\n", c);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (p) {
|
||||
if (c == NULL) {
|
||||
pr_info("No class is specified, cannot add perm [%s] \n",
|
||||
p);
|
||||
return false;
|
||||
}
|
||||
|
||||
perm = symtab_search(&cls->permissions, p);
|
||||
if (perm == NULL && cls->comdatum != NULL) {
|
||||
perm = symtab_search(&cls->comdatum->permissions, p);
|
||||
}
|
||||
if (perm == NULL) {
|
||||
pr_info("perm %s does not exist in class %s\n", p, c);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
add_rule_raw(db, src, tgt, cls, perm, effect, invert);
|
||||
return true;
|
||||
}
|
||||
|
||||
static void add_rule_raw(struct policydb *db, struct type_datum *src,
|
||||
struct type_datum *tgt, struct class_datum *cls,
|
||||
struct perm_datum *perm, int effect, bool invert)
|
||||
{
|
||||
if (src == NULL) {
|
||||
struct hashtab_node *node;
|
||||
if (strip_av(effect, invert)) {
|
||||
ksu_hashtab_for_each(db->p_types.table, node)
|
||||
{
|
||||
add_rule_raw(db,
|
||||
(struct type_datum *)node->datum,
|
||||
tgt, cls, perm, effect, invert);
|
||||
};
|
||||
} else {
|
||||
ksu_hashtab_for_each(db->p_types.table, node)
|
||||
{
|
||||
struct type_datum *type =
|
||||
(struct type_datum *)(node->datum);
|
||||
if (type->attribute) {
|
||||
add_rule_raw(db, type, tgt, cls, perm,
|
||||
effect, invert);
|
||||
}
|
||||
};
|
||||
}
|
||||
} else if (tgt == NULL) {
|
||||
struct hashtab_node *node;
|
||||
if (strip_av(effect, invert)) {
|
||||
ksu_hashtab_for_each(db->p_types.table, node)
|
||||
{
|
||||
add_rule_raw(db, src,
|
||||
(struct type_datum *)node->datum,
|
||||
cls, perm, effect, invert);
|
||||
};
|
||||
} else {
|
||||
ksu_hashtab_for_each(db->p_types.table, node)
|
||||
{
|
||||
struct type_datum *type =
|
||||
(struct type_datum *)(node->datum);
|
||||
if (type->attribute) {
|
||||
add_rule_raw(db, src, type, cls, perm,
|
||||
effect, invert);
|
||||
}
|
||||
};
|
||||
}
|
||||
} else if (cls == NULL) {
|
||||
struct hashtab_node *node;
|
||||
ksu_hashtab_for_each(db->p_classes.table, node)
|
||||
{
|
||||
add_rule_raw(db, src, tgt,
|
||||
(struct class_datum *)node->datum, perm,
|
||||
effect, invert);
|
||||
}
|
||||
} else {
|
||||
struct avtab_key key;
|
||||
key.source_type = src->value;
|
||||
key.target_type = tgt->value;
|
||||
key.target_class = cls->value;
|
||||
key.specified = effect;
|
||||
|
||||
struct avtab_node *node = get_avtab_node(db, &key, NULL);
|
||||
if (invert) {
|
||||
if (perm)
|
||||
node->datum.u.data &=
|
||||
~(1U << (perm->value - 1));
|
||||
else
|
||||
node->datum.u.data = 0U;
|
||||
} else {
|
||||
if (perm)
|
||||
node->datum.u.data |= 1U << (perm->value - 1);
|
||||
else
|
||||
node->datum.u.data = ~0U;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define ioctl_driver(x) (x >> 8 & 0xFF)
|
||||
#define ioctl_func(x) (x & 0xFF)
|
||||
|
||||
#define xperm_test(x, p) (1 & (p[x >> 5] >> (x & 0x1f)))
|
||||
#define xperm_set(x, p) (p[x >> 5] |= (1 << (x & 0x1f)))
|
||||
#define xperm_clear(x, p) (p[x >> 5] &= ~(1 << (x & 0x1f)))
|
||||
|
||||
static void add_xperm_rule_raw(struct policydb *db, struct type_datum *src,
|
||||
struct type_datum *tgt, struct class_datum *cls,
|
||||
uint16_t low, uint16_t high, int effect,
|
||||
bool invert)
|
||||
{
|
||||
if (src == NULL) {
|
||||
struct hashtab_node *node;
|
||||
ksu_hashtab_for_each(db->p_types.table, node)
|
||||
{
|
||||
struct type_datum *type =
|
||||
(struct type_datum *)(node->datum);
|
||||
if (type->attribute) {
|
||||
add_xperm_rule_raw(db, type, tgt, cls, low,
|
||||
high, effect, invert);
|
||||
}
|
||||
};
|
||||
} else if (tgt == NULL) {
|
||||
struct hashtab_node *node;
|
||||
ksu_hashtab_for_each(db->p_types.table, node)
|
||||
{
|
||||
struct type_datum *type =
|
||||
(struct type_datum *)(node->datum);
|
||||
if (type->attribute) {
|
||||
add_xperm_rule_raw(db, src, type, cls, low,
|
||||
high, effect, invert);
|
||||
}
|
||||
};
|
||||
} else if (cls == NULL) {
|
||||
struct hashtab_node *node;
|
||||
ksu_hashtab_for_each(db->p_classes.table, node)
|
||||
{
|
||||
add_xperm_rule_raw(db, src, tgt,
|
||||
(struct class_datum *)(node->datum),
|
||||
low, high, effect, invert);
|
||||
};
|
||||
} else {
|
||||
struct avtab_key key;
|
||||
key.source_type = src->value;
|
||||
key.target_type = tgt->value;
|
||||
key.target_class = cls->value;
|
||||
key.specified = effect;
|
||||
|
||||
struct avtab_datum *datum;
|
||||
struct avtab_node *node;
|
||||
struct avtab_extended_perms xperms;
|
||||
|
||||
memset(&xperms, 0, sizeof(xperms));
|
||||
if (ioctl_driver(low) != ioctl_driver(high)) {
|
||||
xperms.specified = AVTAB_XPERMS_IOCTLDRIVER;
|
||||
xperms.driver = 0;
|
||||
} else {
|
||||
xperms.specified = AVTAB_XPERMS_IOCTLFUNCTION;
|
||||
xperms.driver = ioctl_driver(low);
|
||||
}
|
||||
int i;
|
||||
if (xperms.specified == AVTAB_XPERMS_IOCTLDRIVER) {
|
||||
for (i = ioctl_driver(low); i <= ioctl_driver(high);
|
||||
++i) {
|
||||
if (invert)
|
||||
xperm_clear(i, xperms.perms.p);
|
||||
else
|
||||
xperm_set(i, xperms.perms.p);
|
||||
}
|
||||
} else {
|
||||
for (i = ioctl_func(low); i <= ioctl_func(high); ++i) {
|
||||
if (invert)
|
||||
xperm_clear(i, xperms.perms.p);
|
||||
else
|
||||
xperm_set(i, xperms.perms.p);
|
||||
}
|
||||
}
|
||||
|
||||
node = get_avtab_node(db, &key, &xperms);
|
||||
if (!node) {
|
||||
pr_warn("add_xperm_rule_raw cannot found node!\n");
|
||||
return;
|
||||
}
|
||||
datum = &node->datum;
|
||||
|
||||
if (datum->u.xperms == NULL) {
|
||||
datum->u.xperms =
|
||||
(struct avtab_extended_perms *)(kmalloc(
|
||||
sizeof(xperms), GFP_KERNEL));
|
||||
if (!datum->u.xperms) {
|
||||
pr_err("alloc xperms failed\n");
|
||||
return;
|
||||
}
|
||||
memcpy(datum->u.xperms, &xperms, sizeof(xperms));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static bool add_xperm_rule(struct policydb *db, const char *s, const char *t,
|
||||
const char *c, const char *range, int effect,
|
||||
bool invert)
|
||||
{
|
||||
struct type_datum *src = NULL, *tgt = NULL;
|
||||
struct class_datum *cls = NULL;
|
||||
|
||||
if (s) {
|
||||
src = symtab_search(&db->p_types, s);
|
||||
if (src == NULL) {
|
||||
pr_info("source type %s does not exist\n", s);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (t) {
|
||||
tgt = symtab_search(&db->p_types, t);
|
||||
if (tgt == NULL) {
|
||||
pr_info("target type %s does not exist\n", t);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (c) {
|
||||
cls = symtab_search(&db->p_classes, c);
|
||||
if (cls == NULL) {
|
||||
pr_info("class %s does not exist\n", c);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
u16 low, high;
|
||||
|
||||
if (range) {
|
||||
if (strchr(range, '-')) {
|
||||
sscanf(range, "%hx-%hx", &low, &high);
|
||||
} else {
|
||||
sscanf(range, "%hx", &low);
|
||||
high = low;
|
||||
}
|
||||
} else {
|
||||
low = 0;
|
||||
high = 0xFFFF;
|
||||
}
|
||||
|
||||
add_xperm_rule_raw(db, src, tgt, cls, low, high, effect, invert);
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool add_type_rule(struct policydb *db, const char *s, const char *t,
|
||||
const char *c, const char *d, int effect)
|
||||
{
|
||||
struct type_datum *src, *tgt, *def;
|
||||
struct class_datum *cls;
|
||||
|
||||
src = symtab_search(&db->p_types, s);
|
||||
if (src == NULL) {
|
||||
pr_info("source type %s does not exist\n", s);
|
||||
return false;
|
||||
}
|
||||
tgt = symtab_search(&db->p_types, t);
|
||||
if (tgt == NULL) {
|
||||
pr_info("target type %s does not exist\n", t);
|
||||
return false;
|
||||
}
|
||||
cls = symtab_search(&db->p_classes, c);
|
||||
if (cls == NULL) {
|
||||
pr_info("class %s does not exist\n", c);
|
||||
return false;
|
||||
}
|
||||
def = symtab_search(&db->p_types, d);
|
||||
if (def == NULL) {
|
||||
pr_info("default type %s does not exist\n", d);
|
||||
return false;
|
||||
}
|
||||
|
||||
struct avtab_key key;
|
||||
key.source_type = src->value;
|
||||
key.target_type = tgt->value;
|
||||
key.target_class = cls->value;
|
||||
key.specified = effect;
|
||||
|
||||
struct avtab_node *node = get_avtab_node(db, &key, NULL);
|
||||
node->datum.u.data = def->value;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// 5.9.0 : static inline int hashtab_insert(struct hashtab *h, void *key, void
|
||||
// *datum, struct hashtab_key_params key_params) 5.8.0: int
|
||||
// hashtab_insert(struct hashtab *h, void *k, void *d);
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
|
||||
static u32 filenametr_hash(const void *k)
|
||||
{
|
||||
const struct filename_trans_key *ft = k;
|
||||
unsigned long hash;
|
||||
unsigned int byte_num;
|
||||
unsigned char focus;
|
||||
|
||||
hash = ft->ttype ^ ft->tclass;
|
||||
|
||||
byte_num = 0;
|
||||
while ((focus = ft->name[byte_num++]))
|
||||
hash = partial_name_hash(focus, hash);
|
||||
return hash;
|
||||
}
|
||||
|
||||
static int filenametr_cmp(const void *k1, const void *k2)
|
||||
{
|
||||
const struct filename_trans_key *ft1 = k1;
|
||||
const struct filename_trans_key *ft2 = k2;
|
||||
int v;
|
||||
|
||||
v = ft1->ttype - ft2->ttype;
|
||||
if (v)
|
||||
return v;
|
||||
|
||||
v = ft1->tclass - ft2->tclass;
|
||||
if (v)
|
||||
return v;
|
||||
|
||||
return strcmp(ft1->name, ft2->name);
|
||||
}
|
||||
|
||||
static const struct hashtab_key_params filenametr_key_params = {
|
||||
.hash = filenametr_hash,
|
||||
.cmp = filenametr_cmp,
|
||||
};
|
||||
#endif
|
||||
|
||||
static bool add_filename_trans(struct policydb *db, const char *s,
|
||||
const char *t, const char *c, const char *d,
|
||||
const char *o)
|
||||
{
|
||||
struct type_datum *src, *tgt, *def;
|
||||
struct class_datum *cls;
|
||||
|
||||
src = symtab_search(&db->p_types, s);
|
||||
if (src == NULL) {
|
||||
pr_warn("source type %s does not exist\n", s);
|
||||
return false;
|
||||
}
|
||||
tgt = symtab_search(&db->p_types, t);
|
||||
if (tgt == NULL) {
|
||||
pr_warn("target type %s does not exist\n", t);
|
||||
return false;
|
||||
}
|
||||
cls = symtab_search(&db->p_classes, c);
|
||||
if (cls == NULL) {
|
||||
pr_warn("class %s does not exist\n", c);
|
||||
return false;
|
||||
}
|
||||
def = symtab_search(&db->p_types, d);
|
||||
if (def == NULL) {
|
||||
pr_warn("default type %s does not exist\n", d);
|
||||
return false;
|
||||
}
|
||||
|
||||
struct filename_trans_key key;
|
||||
key.ttype = tgt->value;
|
||||
key.tclass = cls->value;
|
||||
key.name = (char *)o;
|
||||
|
||||
struct filename_trans_datum *last = NULL;
|
||||
|
||||
struct filename_trans_datum *trans =
|
||||
policydb_filenametr_search(db, &key);
|
||||
while (trans) {
|
||||
if (ebitmap_get_bit(&trans->stypes, src->value - 1)) {
|
||||
// Duplicate, overwrite existing data and return
|
||||
trans->otype = def->value;
|
||||
return true;
|
||||
}
|
||||
if (trans->otype == def->value)
|
||||
break;
|
||||
last = trans;
|
||||
trans = trans->next;
|
||||
}
|
||||
|
||||
if (trans == NULL) {
|
||||
trans = (struct filename_trans_datum *)kcalloc(sizeof(*trans),
|
||||
1, GFP_ATOMIC);
|
||||
struct filename_trans_key *new_key =
|
||||
(struct filename_trans_key *)kmalloc(sizeof(*new_key),
|
||||
GFP_ATOMIC);
|
||||
*new_key = key;
|
||||
new_key->name = kstrdup(key.name, GFP_ATOMIC);
|
||||
trans->next = last;
|
||||
trans->otype = def->value;
|
||||
hashtab_insert(&db->filename_trans, new_key, trans,
|
||||
filenametr_key_params);
|
||||
}
|
||||
|
||||
db->compat_filename_trans_count++;
|
||||
return ebitmap_set_bit(&trans->stypes, src->value - 1, 1) == 0;
|
||||
}
|
||||
|
||||
static bool add_genfscon(struct policydb *db, const char *fs_name,
|
||||
const char *path, const char *context)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
static void *ksu_realloc(void *old, size_t new_size, size_t old_size)
|
||||
{
|
||||
// we can't use krealloc, because it may be read-only
|
||||
void *new = kzalloc(new_size, GFP_ATOMIC);
|
||||
if (!new) {
|
||||
return NULL;
|
||||
}
|
||||
if (old_size) {
|
||||
memcpy(new, old, old_size);
|
||||
}
|
||||
// we can't use kfree, because it may be read-only
|
||||
// there maybe some leaks, maybe we can check ptr_write, but it's not a big deal
|
||||
// kfree(old);
|
||||
return new;
|
||||
}
|
||||
|
||||
static bool add_type(struct policydb *db, const char *type_name, bool attr)
|
||||
{
|
||||
struct type_datum *type = symtab_search(&db->p_types, type_name);
|
||||
if (type) {
|
||||
pr_warn("Type %s already exists\n", type_name);
|
||||
return true;
|
||||
}
|
||||
|
||||
u32 value = ++db->p_types.nprim;
|
||||
type = (struct type_datum *)kzalloc(sizeof(struct type_datum),
|
||||
GFP_ATOMIC);
|
||||
if (!type) {
|
||||
pr_err("add_type: alloc type_datum failed.\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
type->primary = 1;
|
||||
type->value = value;
|
||||
type->attribute = attr;
|
||||
|
||||
char *key = kstrdup(type_name, GFP_ATOMIC);
|
||||
if (!key) {
|
||||
pr_err("add_type: alloc key failed.\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (symtab_insert(&db->p_types, key, type)) {
|
||||
pr_err("add_type: insert symtab failed.\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
struct ebitmap *new_type_attr_map_array =
|
||||
ksu_realloc(db->type_attr_map_array,
|
||||
value * sizeof(struct ebitmap),
|
||||
(value - 1) * sizeof(struct ebitmap));
|
||||
|
||||
if (!new_type_attr_map_array) {
|
||||
pr_err("add_type: alloc type_attr_map_array failed\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
struct type_datum **new_type_val_to_struct =
|
||||
ksu_realloc(db->type_val_to_struct,
|
||||
sizeof(*db->type_val_to_struct) * value,
|
||||
sizeof(*db->type_val_to_struct) * (value - 1));
|
||||
|
||||
if (!new_type_val_to_struct) {
|
||||
pr_err("add_type: alloc type_val_to_struct failed\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
char **new_val_to_name_types =
|
||||
ksu_realloc(db->sym_val_to_name[SYM_TYPES],
|
||||
sizeof(char *) * value,
|
||||
sizeof(char *) * (value - 1));
|
||||
if (!new_val_to_name_types) {
|
||||
pr_err("add_type: alloc val_to_name failed\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
db->type_attr_map_array = new_type_attr_map_array;
|
||||
ebitmap_init(&db->type_attr_map_array[value - 1]);
|
||||
ebitmap_set_bit(&db->type_attr_map_array[value - 1], value - 1, 1);
|
||||
|
||||
db->type_val_to_struct = new_type_val_to_struct;
|
||||
db->type_val_to_struct[value - 1] = type;
|
||||
|
||||
db->sym_val_to_name[SYM_TYPES] = new_val_to_name_types;
|
||||
db->sym_val_to_name[SYM_TYPES][value - 1] = key;
|
||||
|
||||
int i;
|
||||
for (i = 0; i < db->p_roles.nprim; ++i) {
|
||||
ebitmap_set_bit(&db->role_val_to_struct[i]->types, value - 1,
|
||||
1);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool set_type_state(struct policydb *db, const char *type_name,
|
||||
bool permissive)
|
||||
{
|
||||
struct type_datum *type;
|
||||
if (type_name == NULL) {
|
||||
struct hashtab_node *node;
|
||||
ksu_hashtab_for_each(db->p_types.table, node)
|
||||
{
|
||||
type = (struct type_datum *)(node->datum);
|
||||
if (ebitmap_set_bit(&db->permissive_map, type->value,
|
||||
permissive))
|
||||
pr_info("Could not set bit in permissive map\n");
|
||||
};
|
||||
} else {
|
||||
type = (struct type_datum *)symtab_search(&db->p_types,
|
||||
type_name);
|
||||
if (type == NULL) {
|
||||
pr_info("type %s does not exist\n", type_name);
|
||||
return false;
|
||||
}
|
||||
if (ebitmap_set_bit(&db->permissive_map, type->value,
|
||||
permissive)) {
|
||||
pr_info("Could not set bit in permissive map\n");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
static void add_typeattribute_raw(struct policydb *db, struct type_datum *type,
|
||||
struct type_datum *attr)
|
||||
{
|
||||
struct ebitmap *sattr = &db->type_attr_map_array[type->value - 1];
|
||||
ebitmap_set_bit(sattr, attr->value - 1, 1);
|
||||
|
||||
struct hashtab_node *node;
|
||||
struct constraint_node *n;
|
||||
struct constraint_expr *e;
|
||||
ksu_hashtab_for_each(db->p_classes.table, node)
|
||||
{
|
||||
struct class_datum *cls = (struct class_datum *)(node->datum);
|
||||
for (n = cls->constraints; n; n = n->next) {
|
||||
for (e = n->expr; e; e = e->next) {
|
||||
if (e->expr_type == CEXPR_NAMES &&
|
||||
ebitmap_get_bit(&e->type_names->types,
|
||||
attr->value - 1)) {
|
||||
ebitmap_set_bit(&e->names,
|
||||
type->value - 1, 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
static bool add_typeattribute(struct policydb *db, const char *type,
|
||||
const char *attr)
|
||||
{
|
||||
struct type_datum *type_d = symtab_search(&db->p_types, type);
|
||||
if (type_d == NULL) {
|
||||
pr_info("type %s does not exist\n", type);
|
||||
return false;
|
||||
} else if (type_d->attribute) {
|
||||
pr_info("type %s is an attribute\n", attr);
|
||||
return false;
|
||||
}
|
||||
|
||||
struct type_datum *attr_d = symtab_search(&db->p_types, attr);
|
||||
if (attr_d == NULL) {
|
||||
pr_info("attribute %s does not exist\n", type);
|
||||
return false;
|
||||
} else if (!attr_d->attribute) {
|
||||
pr_info("type %s is not an attribute \n", attr);
|
||||
return false;
|
||||
}
|
||||
|
||||
add_typeattribute_raw(db, type_d, attr_d);
|
||||
return true;
|
||||
}
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////
|
||||
|
||||
// Operation on types
|
||||
bool ksu_type(struct policydb *db, const char *name, const char *attr)
|
||||
{
|
||||
return add_type(db, name, false) && add_typeattribute(db, name, attr);
|
||||
}
|
||||
|
||||
bool ksu_attribute(struct policydb *db, const char *name)
|
||||
{
|
||||
return add_type(db, name, true);
|
||||
}
|
||||
|
||||
bool ksu_permissive(struct policydb *db, const char *type)
|
||||
{
|
||||
return set_type_state(db, type, true);
|
||||
}
|
||||
|
||||
bool ksu_enforce(struct policydb *db, const char *type)
|
||||
{
|
||||
return set_type_state(db, type, false);
|
||||
}
|
||||
|
||||
bool ksu_typeattribute(struct policydb *db, const char *type, const char *attr)
|
||||
{
|
||||
return add_typeattribute(db, type, attr);
|
||||
}
|
||||
|
||||
bool ksu_exists(struct policydb *db, const char *type)
|
||||
{
|
||||
return symtab_search(&db->p_types, type) != NULL;
|
||||
}
|
||||
|
||||
// Access vector rules
|
||||
bool ksu_allow(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm)
|
||||
{
|
||||
return add_rule(db, src, tgt, cls, perm, AVTAB_ALLOWED, false);
|
||||
}
|
||||
|
||||
bool ksu_deny(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm)
|
||||
{
|
||||
return add_rule(db, src, tgt, cls, perm, AVTAB_ALLOWED, true);
|
||||
}
|
||||
|
||||
bool ksu_auditallow(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm)
|
||||
{
|
||||
return add_rule(db, src, tgt, cls, perm, AVTAB_AUDITALLOW, false);
|
||||
}
|
||||
bool ksu_dontaudit(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm)
|
||||
{
|
||||
return add_rule(db, src, tgt, cls, perm, AVTAB_AUDITDENY, true);
|
||||
}
|
||||
|
||||
// Extended permissions access vector rules
|
||||
bool ksu_allowxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range)
|
||||
{
|
||||
return add_xperm_rule(db, src, tgt, cls, range, AVTAB_XPERMS_ALLOWED,
|
||||
false);
|
||||
}
|
||||
|
||||
bool ksu_auditallowxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range)
|
||||
{
|
||||
return add_xperm_rule(db, src, tgt, cls, range, AVTAB_XPERMS_AUDITALLOW,
|
||||
false);
|
||||
}
|
||||
|
||||
bool ksu_dontauditxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range)
|
||||
{
|
||||
return add_xperm_rule(db, src, tgt, cls, range, AVTAB_XPERMS_DONTAUDIT,
|
||||
false);
|
||||
}
|
||||
|
||||
// Type rules
|
||||
bool ksu_type_transition(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def, const char *obj)
|
||||
{
|
||||
if (obj) {
|
||||
return add_filename_trans(db, src, tgt, cls, def, obj);
|
||||
} else {
|
||||
return add_type_rule(db, src, tgt, cls, def, AVTAB_TRANSITION);
|
||||
}
|
||||
}
|
||||
|
||||
bool ksu_type_change(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def)
|
||||
{
|
||||
return add_type_rule(db, src, tgt, cls, def, AVTAB_CHANGE);
|
||||
}
|
||||
|
||||
bool ksu_type_member(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def)
|
||||
{
|
||||
return add_type_rule(db, src, tgt, cls, def, AVTAB_MEMBER);
|
||||
}
|
||||
|
||||
// File system labeling
|
||||
bool ksu_genfscon(struct policydb *db, const char *fs_name, const char *path,
|
||||
const char *ctx)
|
||||
{
|
||||
return add_genfscon(db, fs_name, path, ctx);
|
||||
}
|
||||
46
kernel/selinux/sepolicy.h
Normal file
46
kernel/selinux/sepolicy.h
Normal file
|
|
@ -0,0 +1,46 @@
|
|||
#ifndef __KSU_H_SEPOLICY
|
||||
#define __KSU_H_SEPOLICY
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
#include "ss/policydb.h"
|
||||
|
||||
// Operation on types
|
||||
bool ksu_type(struct policydb *db, const char *name, const char *attr);
|
||||
bool ksu_attribute(struct policydb *db, const char *name);
|
||||
bool ksu_permissive(struct policydb *db, const char *type);
|
||||
bool ksu_enforce(struct policydb *db, const char *type);
|
||||
bool ksu_typeattribute(struct policydb *db, const char *type, const char *attr);
|
||||
bool ksu_exists(struct policydb *db, const char *type);
|
||||
|
||||
// Access vector rules
|
||||
bool ksu_allow(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
bool ksu_deny(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
bool ksu_auditallow(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
bool ksu_dontaudit(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
|
||||
// Extended permissions access vector rules
|
||||
bool ksu_allowxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range);
|
||||
bool ksu_auditallowxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range);
|
||||
bool ksu_dontauditxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range);
|
||||
|
||||
// Type rules
|
||||
bool ksu_type_transition(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def, const char *obj);
|
||||
bool ksu_type_change(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def);
|
||||
bool ksu_type_member(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def);
|
||||
|
||||
// File system labeling
|
||||
bool ksu_genfscon(struct policydb *db, const char *fs_name, const char *path,
|
||||
const char *ctx);
|
||||
|
||||
#endif
|
||||
79
kernel/setup.sh
Executable file
79
kernel/setup.sh
Executable file
|
|
@ -0,0 +1,79 @@
|
|||
#!/bin/sh
|
||||
set -eu
|
||||
|
||||
KERNEL_ROOT=$(pwd)
|
||||
|
||||
display_usage() {
|
||||
echo "Usage: $0 [--cleanup | <commit-or-tag>]"
|
||||
echo " --cleanup: Cleans up previous modifications made by the script."
|
||||
echo " <commit-or-tag>: Sets up or updates the KernelSU to specified tag or commit."
|
||||
echo " -h, --help: Displays this usage information."
|
||||
echo " (no args): Sets up or updates the KernelSU environment to the latest tagged version."
|
||||
}
|
||||
|
||||
initialize_variables() {
|
||||
if test -d "$KERNEL_ROOT/common/drivers"; then
|
||||
DRIVER_DIR="$KERNEL_ROOT/common/drivers"
|
||||
elif test -d "$KERNEL_ROOT/drivers"; then
|
||||
DRIVER_DIR="$KERNEL_ROOT/drivers"
|
||||
else
|
||||
echo '[ERROR] "drivers/" directory not found.'
|
||||
exit 127
|
||||
fi
|
||||
|
||||
DRIVER_MAKEFILE=$DRIVER_DIR/Makefile
|
||||
DRIVER_KCONFIG=$DRIVER_DIR/Kconfig
|
||||
}
|
||||
|
||||
# Reverts modifications made by this script
|
||||
perform_cleanup() {
|
||||
echo "[+] Cleaning up..."
|
||||
[ -L "$DRIVER_DIR/kernelsu" ] && rm "$DRIVER_DIR/kernelsu" && echo "[-] Symlink removed."
|
||||
grep -q "kernelsu" "$DRIVER_MAKEFILE" && sed -i '/kernelsu/d' "$DRIVER_MAKEFILE" && echo "[-] Makefile reverted."
|
||||
grep -q "kernelsu" "$DRIVER_KCONFIG" && sed -i '/kernelsu/d' "$DRIVER_KCONFIG" && echo "[-] Kconfig reverted."
|
||||
if [ -d "$KERNEL_ROOT/KernelSU" ]; then
|
||||
rm -rf "$KERNEL_ROOT/KernelSU" && echo "[-] KernelSU directory deleted."
|
||||
fi
|
||||
}
|
||||
|
||||
# Sets up or update KernelSU environment
|
||||
setup_kernelsu() {
|
||||
echo "[+] Setting up KernelSU..."
|
||||
# Clone the repository
|
||||
if [ ! -d "$KERNEL_ROOT/KernelSU" ]; then
|
||||
git clone https://github.com/SukiSU-Ultra/SukiSU-Ultra KernelSU
|
||||
echo "[+] Repository cloned."
|
||||
fi
|
||||
cd "$KERNEL_ROOT/KernelSU"
|
||||
git stash && echo "[-] Stashed current changes."
|
||||
if [ "$(git status | grep -Po 'v\d+(\.\d+)*' | head -n1)" ]; then
|
||||
git checkout main && echo "[-] Switched to main branch."
|
||||
fi
|
||||
git pull && echo "[+] Repository updated."
|
||||
if [ -z "${1-}" ]; then
|
||||
git checkout "$(git describe --abbrev=0 --tags)" && echo "[-] Checked out latest tag."
|
||||
else
|
||||
git checkout "$1" && echo "[-] Checked out $1." || echo "[-] Checkout default branch"
|
||||
fi
|
||||
cd "$DRIVER_DIR"
|
||||
ln -sf "$(realpath --relative-to="$DRIVER_DIR" "$KERNEL_ROOT/KernelSU/kernel")" "kernelsu" && echo "[+] Symlink created."
|
||||
|
||||
# Add entries in Makefile and Kconfig if not already existing
|
||||
grep -q "kernelsu" "$DRIVER_MAKEFILE" || echo 'obj-$(CONFIG_KSU) += kernelsu/' >> "$DRIVER_MAKEFILE" && echo "[+] Modified Makefile."
|
||||
grep -q 'source "drivers/kernelsu/Kconfig"' "$DRIVER_KCONFIG" || sed -i '/endmenu/i\source "drivers/kernelsu/Kconfig"' "$DRIVER_KCONFIG" && echo "[+] Modified Kconfig."
|
||||
echo '[+] Done.'
|
||||
}
|
||||
|
||||
# Process command-line arguments
|
||||
if [ "$#" -eq 0 ]; then
|
||||
initialize_variables
|
||||
setup_kernelsu
|
||||
elif [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
|
||||
display_usage
|
||||
elif [ "$1" = "--cleanup" ]; then
|
||||
initialize_variables
|
||||
perform_cleanup
|
||||
else
|
||||
initialize_variables
|
||||
setup_kernelsu "$@"
|
||||
fi
|
||||
337
kernel/sucompat.c
Normal file
337
kernel/sucompat.c
Normal file
|
|
@ -0,0 +1,337 @@
|
|||
#include <linux/dcache.h>
|
||||
#include <linux/security.h>
|
||||
#include <asm/current.h>
|
||||
#include <linux/cred.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/kprobes.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/sched/task_stack.h>
|
||||
|
||||
#include "objsec.h"
|
||||
#include "allowlist.h"
|
||||
#include "arch.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksud.h"
|
||||
#include "kernel_compat.h"
|
||||
|
||||
#define SU_PATH "/system/bin/su"
|
||||
#define SH_PATH "/system/bin/sh"
|
||||
|
||||
extern void escape_to_root();
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
static bool ksu_sucompat_hook_state __read_mostly = true;
|
||||
#endif
|
||||
|
||||
static void __user *userspace_stack_buffer(const void *d, size_t len)
|
||||
{
|
||||
/* To avoid having to mmap a page in userspace, just write below the stack
|
||||
* pointer. */
|
||||
char __user *p = (void __user *)current_user_stack_pointer() - len;
|
||||
|
||||
return copy_to_user(p, d, len) ? NULL : p;
|
||||
}
|
||||
|
||||
static char __user *sh_user_path(void)
|
||||
{
|
||||
static const char sh_path[] = "/system/bin/sh";
|
||||
|
||||
return userspace_stack_buffer(sh_path, sizeof(sh_path));
|
||||
}
|
||||
|
||||
static char __user *ksud_user_path(void)
|
||||
{
|
||||
static const char ksud_path[] = KSUD_PATH;
|
||||
|
||||
return userspace_stack_buffer(ksud_path, sizeof(ksud_path));
|
||||
}
|
||||
|
||||
int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode,
|
||||
int *__unused_flags)
|
||||
{
|
||||
const char su[] = SU_PATH;
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_hook_state) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!ksu_is_allow_uid(current_uid().val)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
char path[sizeof(su) + 1];
|
||||
memset(path, 0, sizeof(path));
|
||||
ksu_strncpy_from_user_nofault(path, *filename_user, sizeof(path));
|
||||
|
||||
if (unlikely(!memcmp(path, su, sizeof(su)))) {
|
||||
pr_info("faccessat su->sh!\n");
|
||||
*filename_user = sh_user_path();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags)
|
||||
{
|
||||
// const char sh[] = SH_PATH;
|
||||
const char su[] = SU_PATH;
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_hook_state) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
if (!ksu_is_allow_uid(current_uid().val)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (unlikely(!filename_user)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
char path[sizeof(su) + 1];
|
||||
memset(path, 0, sizeof(path));
|
||||
// Remove this later!! we use syscall hook, so this will never happen!!!!!
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 18, 0) && 0
|
||||
// it becomes a `struct filename *` after 5.18
|
||||
// https://elixir.bootlin.com/linux/v5.18/source/fs/stat.c#L216
|
||||
const char sh[] = SH_PATH;
|
||||
struct filename *filename = *((struct filename **)filename_user);
|
||||
if (IS_ERR(filename)) {
|
||||
return 0;
|
||||
}
|
||||
if (likely(memcmp(filename->name, su, sizeof(su))))
|
||||
return 0;
|
||||
pr_info("vfs_statx su->sh!\n");
|
||||
memcpy((void *)filename->name, sh, sizeof(sh));
|
||||
#else
|
||||
ksu_strncpy_from_user_nofault(path, *filename_user, sizeof(path));
|
||||
|
||||
if (unlikely(!memcmp(path, su, sizeof(su)))) {
|
||||
pr_info("newfstatat su->sh!\n");
|
||||
*filename_user = sh_user_path();
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
|
||||
void *envp, int *flags)
|
||||
{
|
||||
return ksu_handle_execveat_sucompat(fd, filename_ptr, argv, envp, flags);
|
||||
}
|
||||
|
||||
// the call from execve_handler_pre won't provided correct value for __never_use_argument, use them after fix execve_handler_pre, keeping them for consistence for manually patched code
|
||||
int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
|
||||
void *__never_use_argv, void *__never_use_envp,
|
||||
int *__never_use_flags)
|
||||
{
|
||||
struct filename *filename;
|
||||
const char sh[] = KSUD_PATH;
|
||||
const char su[] = SU_PATH;
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_hook_state) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
if (unlikely(!filename_ptr))
|
||||
return 0;
|
||||
|
||||
filename = *filename_ptr;
|
||||
if (IS_ERR(filename)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (likely(memcmp(filename->name, su, sizeof(su))))
|
||||
return 0;
|
||||
|
||||
if (!ksu_is_allow_uid(current_uid().val))
|
||||
return 0;
|
||||
|
||||
pr_info("do_execveat_common su found\n");
|
||||
memcpy((void *)filename->name, sh, sizeof(sh));
|
||||
|
||||
escape_to_root();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_execve_sucompat(int *fd, const char __user **filename_user,
|
||||
void *__never_use_argv, void *__never_use_envp,
|
||||
int *__never_use_flags)
|
||||
{
|
||||
const char su[] = SU_PATH;
|
||||
char path[sizeof(su) + 1];
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_hook_state){
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
if (unlikely(!filename_user))
|
||||
return 0;
|
||||
|
||||
memset(path, 0, sizeof(path));
|
||||
ksu_strncpy_from_user_nofault(path, *filename_user, sizeof(path));
|
||||
|
||||
if (likely(memcmp(path, su, sizeof(su))))
|
||||
return 0;
|
||||
|
||||
if (!ksu_is_allow_uid(current_uid().val))
|
||||
return 0;
|
||||
|
||||
pr_info("sys_execve su found\n");
|
||||
*filename_user = ksud_user_path();
|
||||
|
||||
escape_to_root();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// dummified
|
||||
int ksu_handle_devpts(struct inode *inode)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
int __ksu_handle_devpts(struct inode *inode)
|
||||
{
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_hook_state)
|
||||
return 0;
|
||||
#endif
|
||||
|
||||
if (!current->mm) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
uid_t uid = current_uid().val;
|
||||
if (uid % 100000 < 10000) {
|
||||
// not untrusted_app, ignore it
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (likely(!ksu_is_allow_uid(uid)))
|
||||
return 0;
|
||||
|
||||
struct inode_security_struct *sec = selinux_inode(inode);
|
||||
|
||||
if (ksu_devpts_sid && sec)
|
||||
sec->sid = ksu_devpts_sid;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
static int faccessat_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
int *dfd = (int *)&PT_REGS_PARM1(real_regs);
|
||||
const char __user **filename_user =
|
||||
(const char **)&PT_REGS_PARM2(real_regs);
|
||||
int *mode = (int *)&PT_REGS_PARM3(real_regs);
|
||||
|
||||
return ksu_handle_faccessat(dfd, filename_user, mode, NULL);
|
||||
}
|
||||
|
||||
static int newfstatat_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
int *dfd = (int *)&PT_REGS_PARM1(real_regs);
|
||||
const char __user **filename_user =
|
||||
(const char **)&PT_REGS_PARM2(real_regs);
|
||||
int *flags = (int *)&PT_REGS_SYSCALL_PARM4(real_regs);
|
||||
|
||||
return ksu_handle_stat(dfd, filename_user, flags);
|
||||
}
|
||||
|
||||
static int execve_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
const char __user **filename_user =
|
||||
(const char **)&PT_REGS_PARM1(real_regs);
|
||||
|
||||
return ksu_handle_execve_sucompat(AT_FDCWD, filename_user, NULL, NULL,
|
||||
NULL);
|
||||
}
|
||||
|
||||
static struct kprobe *su_kps[4];
|
||||
static int pts_unix98_lookup_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct inode *inode;
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
|
||||
struct file *file = (struct file *)PT_REGS_PARM2(regs);
|
||||
inode = file->f_path.dentry->d_inode;
|
||||
#else
|
||||
inode = (struct inode *)PT_REGS_PARM2(regs);
|
||||
#endif
|
||||
|
||||
return ksu_handle_devpts(inode);
|
||||
}
|
||||
|
||||
static struct kprobe *init_kprobe(const char *name,
|
||||
kprobe_pre_handler_t handler)
|
||||
{
|
||||
struct kprobe *kp = kzalloc(sizeof(struct kprobe), GFP_KERNEL);
|
||||
if (!kp)
|
||||
return NULL;
|
||||
kp->symbol_name = name;
|
||||
kp->pre_handler = handler;
|
||||
|
||||
int ret = register_kprobe(kp);
|
||||
pr_info("sucompat: register_%s kprobe: %d\n", name, ret);
|
||||
if (ret) {
|
||||
kfree(kp);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return kp;
|
||||
}
|
||||
|
||||
static void destroy_kprobe(struct kprobe **kp_ptr)
|
||||
{
|
||||
struct kprobe *kp = *kp_ptr;
|
||||
if (!kp)
|
||||
return;
|
||||
unregister_kprobe(kp);
|
||||
synchronize_rcu();
|
||||
kfree(kp);
|
||||
*kp_ptr = NULL;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
// sucompat: permited process can execute 'su' to gain root access.
|
||||
void ksu_sucompat_init()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
su_kps[0] = init_kprobe(SYS_EXECVE_SYMBOL, execve_handler_pre);
|
||||
su_kps[1] = init_kprobe(SYS_FACCESSAT_SYMBOL, faccessat_handler_pre);
|
||||
su_kps[2] = init_kprobe(SYS_NEWFSTATAT_SYMBOL, newfstatat_handler_pre);
|
||||
su_kps[3] = init_kprobe("pts_unix98_lookup", pts_unix98_lookup_pre);
|
||||
#else
|
||||
ksu_sucompat_hook_state = true;
|
||||
pr_info("ksu_sucompat_init: hooks enabled: execve/execveat_su, faccessat, stat\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
void ksu_sucompat_exit()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
int i;
|
||||
for (i = 0; i < ARRAY_SIZE(su_kps); i++) {
|
||||
destroy_kprobe(&su_kps[i]);
|
||||
}
|
||||
#else
|
||||
ksu_sucompat_hook_state = false;
|
||||
pr_info("ksu_sucompat_exit: hooks disabled: execve/execveat_su, faccessat, stat\n");
|
||||
#endif
|
||||
}
|
||||
125
kernel/throne_comm.c
Normal file
125
kernel/throne_comm.c
Normal file
|
|
@ -0,0 +1,125 @@
|
|||
#include <linux/fs.h>
|
||||
#include <linux/proc_fs.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/version.h>
|
||||
|
||||
#include "klog.h"
|
||||
#include "throne_comm.h"
|
||||
|
||||
#define PROC_UID_SCANNER "ksu_uid_scanner"
|
||||
|
||||
static struct proc_dir_entry *proc_entry = NULL;
|
||||
static struct workqueue_struct *scanner_wq = NULL;
|
||||
static struct work_struct scan_work;
|
||||
|
||||
// Signal userspace to rescan
|
||||
static bool need_rescan = false;
|
||||
|
||||
static void rescan_work_fn(struct work_struct *work)
|
||||
{
|
||||
// Signal userspace through proc interface
|
||||
need_rescan = true;
|
||||
pr_info("requested userspace uid rescan\n");
|
||||
}
|
||||
|
||||
void ksu_request_userspace_scan(void)
|
||||
{
|
||||
if (scanner_wq) {
|
||||
queue_work(scanner_wq, &scan_work);
|
||||
}
|
||||
}
|
||||
|
||||
void ksu_handle_userspace_update(void)
|
||||
{
|
||||
// Called when userspace notifies update complete
|
||||
need_rescan = false;
|
||||
pr_info("userspace uid list updated\n");
|
||||
}
|
||||
|
||||
static int uid_scanner_show(struct seq_file *m, void *v)
|
||||
{
|
||||
if (need_rescan) {
|
||||
seq_puts(m, "RESCAN\n");
|
||||
} else {
|
||||
seq_puts(m, "OK\n");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int uid_scanner_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, uid_scanner_show, NULL);
|
||||
}
|
||||
|
||||
static ssize_t uid_scanner_write(struct file *file, const char __user *buffer,
|
||||
size_t count, loff_t *pos)
|
||||
{
|
||||
char cmd[16];
|
||||
|
||||
if (count >= sizeof(cmd))
|
||||
return -EINVAL;
|
||||
|
||||
if (copy_from_user(cmd, buffer, count))
|
||||
return -EFAULT;
|
||||
|
||||
cmd[count] = '\0';
|
||||
|
||||
// Remove newline if present
|
||||
if (count > 0 && cmd[count-1] == '\n')
|
||||
cmd[count-1] = '\0';
|
||||
|
||||
if (strcmp(cmd, "UPDATED") == 0) {
|
||||
ksu_handle_userspace_update();
|
||||
pr_info("received userspace update notification\n");
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static const struct proc_ops uid_scanner_proc_ops = {
|
||||
.proc_open = uid_scanner_open,
|
||||
.proc_read = seq_read,
|
||||
.proc_write = uid_scanner_write,
|
||||
.proc_lseek = seq_lseek,
|
||||
.proc_release = single_release,
|
||||
};
|
||||
|
||||
int ksu_throne_comm_init(void)
|
||||
{
|
||||
// Create workqueue
|
||||
scanner_wq = alloc_workqueue("ksu_scanner", WQ_UNBOUND, 1);
|
||||
if (!scanner_wq) {
|
||||
pr_err("failed to create scanner workqueue\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
INIT_WORK(&scan_work, rescan_work_fn);
|
||||
|
||||
// Create proc entry
|
||||
proc_entry = proc_create(PROC_UID_SCANNER, 0600, NULL, &uid_scanner_proc_ops);
|
||||
if (!proc_entry) {
|
||||
pr_err("failed to create proc entry\n");
|
||||
destroy_workqueue(scanner_wq);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
pr_info("throne communication initialized\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
void ksu_throne_comm_exit(void)
|
||||
{
|
||||
if (proc_entry) {
|
||||
proc_remove(proc_entry);
|
||||
proc_entry = NULL;
|
||||
}
|
||||
|
||||
if (scanner_wq) {
|
||||
destroy_workqueue(scanner_wq);
|
||||
scanner_wq = NULL;
|
||||
}
|
||||
|
||||
pr_info("throne communication cleaned up\n");
|
||||
}
|
||||
12
kernel/throne_comm.h
Normal file
12
kernel/throne_comm.h
Normal file
|
|
@ -0,0 +1,12 @@
|
|||
#ifndef __KSU_H_THRONE_COMM
|
||||
#define __KSU_H_THRONE_COMM
|
||||
|
||||
void ksu_request_userspace_scan(void);
|
||||
|
||||
void ksu_handle_userspace_update(void);
|
||||
|
||||
int ksu_throne_comm_init(void);
|
||||
|
||||
void ksu_throne_comm_exit(void);
|
||||
|
||||
#endif
|
||||
661
kernel/throne_tracker.c
Normal file
661
kernel/throne_tracker.c
Normal file
|
|
@ -0,0 +1,661 @@
|
|||
#include <linux/err.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/stat.h>
|
||||
#include <linux/namei.h>
|
||||
|
||||
#include "allowlist.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksu.h"
|
||||
#include "manager.h"
|
||||
#include "throne_tracker.h"
|
||||
#include "kernel_compat.h"
|
||||
#include "dynamic_manager.h"
|
||||
#include "throne_comm.h"
|
||||
|
||||
uid_t ksu_manager_uid = KSU_INVALID_UID;
|
||||
|
||||
#define KSU_UID_LIST_PATH "/data/misc/user_uid/uid_list"
|
||||
#define USER_DATA_PATH "/data/user_de/0"
|
||||
#define USER_DATA_PATH_LEN 256
|
||||
|
||||
struct uid_data {
|
||||
struct list_head list;
|
||||
u32 uid;
|
||||
char package[KSU_MAX_PACKAGE_NAME];
|
||||
};
|
||||
|
||||
// Try read whitelist first, fallback if failed
|
||||
static int read_uid_whitelist(struct list_head *uid_list)
|
||||
{
|
||||
struct file *fp;
|
||||
char *file_content = NULL;
|
||||
char *line, *next_line;
|
||||
loff_t file_size;
|
||||
loff_t pos = 0;
|
||||
int count = 0;
|
||||
ssize_t bytes_read;
|
||||
|
||||
fp = ksu_filp_open_compat(KSU_UID_LIST_PATH, O_RDONLY, 0);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_info("whitelist not found, fallback needed\n");
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
file_size = fp->f_inode->i_size;
|
||||
if (file_size <= 0) {
|
||||
pr_info("whitelist file is empty\n");
|
||||
filp_close(fp, NULL);
|
||||
return -ENODATA;
|
||||
}
|
||||
|
||||
file_content = kzalloc(file_size + 1, GFP_ATOMIC);
|
||||
if (!file_content) {
|
||||
pr_err("failed to allocate memory for whitelist file (%lld bytes)\n", file_size);
|
||||
filp_close(fp, NULL);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
bytes_read = ksu_kernel_read_compat(fp, file_content, file_size, &pos);
|
||||
if (bytes_read != file_size) {
|
||||
pr_err("failed to read whitelist file: read %zd bytes, expected %lld bytes\n",
|
||||
bytes_read, file_size);
|
||||
kfree(file_content);
|
||||
filp_close(fp, NULL);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
file_content[file_size] = '\0';
|
||||
filp_close(fp, NULL);
|
||||
|
||||
pr_info("successfully read whitelist file (%lld bytes), parsing lines...\n", file_size);
|
||||
|
||||
line = file_content;
|
||||
while (line && *line) {
|
||||
next_line = strchr(line, '\n');
|
||||
if (next_line) {
|
||||
*next_line = '\0';
|
||||
next_line++;
|
||||
}
|
||||
|
||||
char *trimmed_line = line;
|
||||
while (*trimmed_line == ' ' || *trimmed_line == '\t' || *trimmed_line == '\r') {
|
||||
trimmed_line++;
|
||||
}
|
||||
|
||||
if (strlen(trimmed_line) > 0) {
|
||||
char *line_copy = trimmed_line;
|
||||
char *uid_str = strsep(&line_copy, " \t");
|
||||
char *package_name = line_copy;
|
||||
|
||||
if (package_name) {
|
||||
while (*package_name == ' ' || *package_name == '\t') {
|
||||
package_name++;
|
||||
}
|
||||
}
|
||||
|
||||
if (uid_str && package_name && strlen(package_name) > 0) {
|
||||
u32 uid;
|
||||
if (!kstrtou32(uid_str, 10, &uid)) {
|
||||
struct uid_data *data = kzalloc(sizeof(struct uid_data), GFP_ATOMIC);
|
||||
if (data) {
|
||||
data->uid = uid;
|
||||
size_t pkg_len = strlen(package_name);
|
||||
size_t copy_len = min(pkg_len, (size_t)(KSU_MAX_PACKAGE_NAME - 1));
|
||||
strncpy(data->package, package_name, copy_len);
|
||||
data->package[copy_len] = '\0';
|
||||
|
||||
list_add_tail(&data->list, uid_list);
|
||||
count++;
|
||||
|
||||
if (count % 100 == 0) {
|
||||
pr_info("parsed %d packages so far...\n", count);
|
||||
}
|
||||
} else {
|
||||
pr_err("failed to allocate memory for uid_data\n");
|
||||
}
|
||||
} else {
|
||||
pr_warn("invalid uid format in line: %s\n", trimmed_line);
|
||||
}
|
||||
} else {
|
||||
pr_warn("invalid line format: %s\n", trimmed_line);
|
||||
}
|
||||
}
|
||||
|
||||
line = next_line;
|
||||
}
|
||||
|
||||
kfree(file_content);
|
||||
pr_info("successfully loaded %d uids from whitelist\n", count);
|
||||
return count > 0 ? 0 : -ENODATA;
|
||||
}
|
||||
|
||||
static int get_pkg_from_apk_path(char *pkg, const char *path)
|
||||
{
|
||||
int len = strlen(path);
|
||||
if (len >= KSU_MAX_PACKAGE_NAME || len < 1)
|
||||
return -1;
|
||||
|
||||
const char *last_slash = NULL;
|
||||
const char *second_last_slash = NULL;
|
||||
|
||||
int i;
|
||||
for (i = len - 1; i >= 0; i--) {
|
||||
if (path[i] == '/') {
|
||||
if (!last_slash) {
|
||||
last_slash = &path[i];
|
||||
} else {
|
||||
second_last_slash = &path[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!last_slash || !second_last_slash)
|
||||
return -1;
|
||||
|
||||
const char *last_hyphen = strchr(second_last_slash, '-');
|
||||
if (!last_hyphen || last_hyphen > last_slash)
|
||||
return -1;
|
||||
|
||||
int pkg_len = last_hyphen - second_last_slash - 1;
|
||||
if (pkg_len >= KSU_MAX_PACKAGE_NAME || pkg_len <= 0)
|
||||
return -1;
|
||||
|
||||
// Copying the package name
|
||||
strncpy(pkg, second_last_slash + 1, pkg_len);
|
||||
pkg[pkg_len] = '\0';
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void crown_manager(const char *apk, struct list_head *uid_data, int signature_index)
|
||||
{
|
||||
char pkg[KSU_MAX_PACKAGE_NAME];
|
||||
if (get_pkg_from_apk_path(pkg, apk) < 0) {
|
||||
pr_err("Failed to get package name from apk path: %s\n", apk);
|
||||
return;
|
||||
}
|
||||
|
||||
pr_info("manager pkg: %s, signature_index: %d\n", pkg, signature_index);
|
||||
|
||||
#ifdef KSU_MANAGER_PACKAGE
|
||||
// pkg is `/<real package>`
|
||||
if (strncmp(pkg, KSU_MANAGER_PACKAGE, sizeof(KSU_MANAGER_PACKAGE))) {
|
||||
pr_info("manager package is inconsistent with kernel build: %s\n",
|
||||
KSU_MANAGER_PACKAGE);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
struct list_head *list = (struct list_head *)uid_data;
|
||||
struct uid_data *np;
|
||||
|
||||
list_for_each_entry (np, list, list) {
|
||||
if (strncmp(np->package, pkg, KSU_MAX_PACKAGE_NAME) == 0) {
|
||||
pr_info("Crowning manager: %s(uid=%d, signature_index=%d)\n", pkg, np->uid, signature_index);
|
||||
|
||||
// Dynamic Sign index (1) or multi-manager signatures (2+)
|
||||
if (signature_index == DYNAMIC_SIGN_INDEX || signature_index >= 2) {
|
||||
ksu_add_manager(np->uid, signature_index);
|
||||
|
||||
if (!ksu_is_manager_uid_valid()) {
|
||||
ksu_set_manager_uid(np->uid);
|
||||
}
|
||||
} else {
|
||||
ksu_set_manager_uid(np->uid);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define DATA_PATH_LEN 384 // 384 is enough for /data/app/<package>/base.apk
|
||||
|
||||
struct data_path {
|
||||
char dirpath[DATA_PATH_LEN];
|
||||
int depth;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
struct apk_path_hash {
|
||||
unsigned int hash;
|
||||
bool exists;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
static struct list_head apk_path_hash_list = LIST_HEAD_INIT(apk_path_hash_list);
|
||||
|
||||
struct my_dir_context {
|
||||
struct dir_context ctx;
|
||||
struct list_head *data_path_list;
|
||||
char *parent_dir;
|
||||
void *private_data;
|
||||
int depth;
|
||||
int *stop;
|
||||
};
|
||||
// https://docs.kernel.org/filesystems/porting.html
|
||||
// filldir_t (readdir callbacks) calling conventions have changed. Instead of returning 0 or -E... it returns bool now. false means "no more" (as -E... used to) and true - "keep going" (as 0 in old calling conventions). Rationale: callers never looked at specific -E... values anyway. -> iterate_shared() instances require no changes at all, all filldir_t ones in the tree converted.
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
|
||||
#define FILLDIR_RETURN_TYPE bool
|
||||
#define FILLDIR_ACTOR_CONTINUE true
|
||||
#define FILLDIR_ACTOR_STOP false
|
||||
#else
|
||||
#define FILLDIR_RETURN_TYPE int
|
||||
#define FILLDIR_ACTOR_CONTINUE 0
|
||||
#define FILLDIR_ACTOR_STOP -EINVAL
|
||||
#endif
|
||||
|
||||
struct uid_scan_stats {
|
||||
size_t total_found;
|
||||
size_t errors_encountered;
|
||||
};
|
||||
|
||||
struct user_data_context {
|
||||
struct dir_context ctx;
|
||||
struct list_head *uid_list;
|
||||
struct uid_scan_stats *stats;
|
||||
};
|
||||
|
||||
FILLDIR_RETURN_TYPE user_data_actor(struct dir_context *ctx, const char *name,
|
||||
int namelen, loff_t off, u64 ino,
|
||||
unsigned int d_type)
|
||||
{
|
||||
struct user_data_context *my_ctx =
|
||||
container_of(ctx, struct user_data_context, ctx);
|
||||
|
||||
if (!my_ctx || !my_ctx->uid_list) {
|
||||
return FILLDIR_ACTOR_STOP;
|
||||
}
|
||||
|
||||
if (!strncmp(name, "..", namelen) || !strncmp(name, ".", namelen))
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
|
||||
if (d_type != DT_DIR)
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
|
||||
if (namelen >= KSU_MAX_PACKAGE_NAME) {
|
||||
pr_warn("Package name too long: %.*s\n", namelen, name);
|
||||
if (my_ctx->stats)
|
||||
my_ctx->stats->errors_encountered++;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
char package_path[USER_DATA_PATH_LEN];
|
||||
if (snprintf(package_path, sizeof(package_path), "%s/%.*s",
|
||||
USER_DATA_PATH, namelen, name) >= sizeof(package_path)) {
|
||||
pr_err("Path too long for package: %.*s\n", namelen, name);
|
||||
if (my_ctx->stats)
|
||||
my_ctx->stats->errors_encountered++;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
struct path path;
|
||||
int err = kern_path(package_path, LOOKUP_FOLLOW, &path);
|
||||
if (err) {
|
||||
pr_debug("Package path lookup failed: %s (err: %d)\n", package_path, err);
|
||||
if (my_ctx->stats)
|
||||
my_ctx->stats->errors_encountered++;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
struct kstat stat;
|
||||
err = vfs_getattr(&path, &stat, STATX_UID, AT_STATX_SYNC_AS_STAT);
|
||||
path_put(&path);
|
||||
|
||||
if (err) {
|
||||
pr_debug("Failed to get attributes for: %s (err: %d)\n", package_path, err);
|
||||
if (my_ctx->stats)
|
||||
my_ctx->stats->errors_encountered++;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
uid_t uid = from_kuid(&init_user_ns, stat.uid);
|
||||
if (uid == (uid_t)-1) {
|
||||
pr_warn("Invalid UID for package: %.*s\n", namelen, name);
|
||||
if (my_ctx->stats)
|
||||
my_ctx->stats->errors_encountered++;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
struct uid_data *data = kzalloc(sizeof(struct uid_data), GFP_ATOMIC);
|
||||
if (!data) {
|
||||
pr_err("Failed to allocate memory for package: %.*s\n", namelen, name);
|
||||
if (my_ctx->stats)
|
||||
my_ctx->stats->errors_encountered++;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
data->uid = uid;
|
||||
size_t copy_len = min(namelen, KSU_MAX_PACKAGE_NAME - 1);
|
||||
strncpy(data->package, name, copy_len);
|
||||
data->package[copy_len] = '\0';
|
||||
|
||||
list_add_tail(&data->list, my_ctx->uid_list);
|
||||
|
||||
if (my_ctx->stats)
|
||||
my_ctx->stats->total_found++;
|
||||
|
||||
pr_info("UserDE UID: Found package: %s, uid: %u\n", data->package, data->uid);
|
||||
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
int scan_user_data_for_uids(struct list_head *uid_list)
|
||||
{
|
||||
struct file *dir_file;
|
||||
struct uid_scan_stats stats = {0};
|
||||
int ret = 0;
|
||||
|
||||
if (!uid_list) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
dir_file = ksu_filp_open_compat(USER_DATA_PATH, O_RDONLY, 0);
|
||||
if (IS_ERR(dir_file)) {
|
||||
pr_err("UserDE UID: Failed to open %s: %ld\n", USER_DATA_PATH, PTR_ERR(dir_file));
|
||||
return PTR_ERR(dir_file);
|
||||
}
|
||||
|
||||
struct user_data_context ctx = {
|
||||
.ctx.actor = user_data_actor,
|
||||
.uid_list = uid_list,
|
||||
.stats = &stats
|
||||
};
|
||||
|
||||
ret = iterate_dir(dir_file, &ctx.ctx);
|
||||
filp_close(dir_file, NULL);
|
||||
|
||||
if (stats.errors_encountered > 0) {
|
||||
pr_warn("Encountered %zu errors while scanning user data directory\n",
|
||||
stats.errors_encountered);
|
||||
}
|
||||
|
||||
pr_info("UserDE UID: Scanned user data directory, found %zu packages with %zu errors\n",
|
||||
stats.total_found, stats.errors_encountered);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
FILLDIR_RETURN_TYPE my_actor(struct dir_context *ctx, const char *name,
|
||||
int namelen, loff_t off, u64 ino,
|
||||
unsigned int d_type)
|
||||
{
|
||||
struct my_dir_context *my_ctx =
|
||||
container_of(ctx, struct my_dir_context, ctx);
|
||||
char dirpath[DATA_PATH_LEN];
|
||||
|
||||
if (!my_ctx) {
|
||||
pr_err("Invalid context\n");
|
||||
return FILLDIR_ACTOR_STOP;
|
||||
}
|
||||
if (my_ctx->stop && *my_ctx->stop) {
|
||||
pr_info("Stop searching\n");
|
||||
return FILLDIR_ACTOR_STOP;
|
||||
}
|
||||
|
||||
if (!strncmp(name, "..", namelen) || !strncmp(name, ".", namelen))
|
||||
return FILLDIR_ACTOR_CONTINUE; // Skip "." and ".."
|
||||
|
||||
if (d_type == DT_DIR && namelen >= 8 && !strncmp(name, "vmdl", 4) &&
|
||||
!strncmp(name + namelen - 4, ".tmp", 4)) {
|
||||
pr_info("Skipping directory: %.*s\n", namelen, name);
|
||||
return FILLDIR_ACTOR_CONTINUE; // Skip staging package
|
||||
}
|
||||
|
||||
|
||||
if (snprintf(dirpath, DATA_PATH_LEN, "%s/%.*s", my_ctx->parent_dir,
|
||||
namelen, name) >= DATA_PATH_LEN) {
|
||||
pr_err("Path too long: %s/%.*s\n", my_ctx->parent_dir, namelen,
|
||||
name);
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
if (d_type == DT_DIR && my_ctx->depth > 0 &&
|
||||
(my_ctx->stop && !*my_ctx->stop)) {
|
||||
struct data_path *data = kmalloc(sizeof(struct data_path), GFP_ATOMIC);
|
||||
|
||||
if (!data) {
|
||||
pr_err("Failed to allocate memory for %s\n", dirpath);
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
strscpy(data->dirpath, dirpath, DATA_PATH_LEN);
|
||||
data->depth = my_ctx->depth - 1;
|
||||
list_add_tail(&data->list, my_ctx->data_path_list);
|
||||
} else {
|
||||
if ((namelen == 8) && (strncmp(name, "base.apk", namelen) == 0)) {
|
||||
struct apk_path_hash *pos, *n;
|
||||
unsigned int hash = full_name_hash(NULL, dirpath, strlen(dirpath));
|
||||
list_for_each_entry(pos, &apk_path_hash_list, list) {
|
||||
if (hash == pos->hash) {
|
||||
pos->exists = true;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
}
|
||||
|
||||
int signature_index = -1;
|
||||
bool is_multi_manager = is_dynamic_manager_apk(
|
||||
dirpath, &signature_index);
|
||||
|
||||
pr_info("Found new base.apk at path: %s, is_multi_manager: %d, signature_index: %d\n",
|
||||
dirpath, is_multi_manager, signature_index);
|
||||
|
||||
// Check for dynamic sign or multi-manager signatures
|
||||
if (is_multi_manager && (signature_index == DYNAMIC_SIGN_INDEX || signature_index >= 2)) {
|
||||
crown_manager(dirpath, my_ctx->private_data, signature_index);
|
||||
|
||||
struct apk_path_hash *apk_data = kmalloc(sizeof(struct apk_path_hash), GFP_ATOMIC);
|
||||
if (apk_data) {
|
||||
apk_data->hash = hash;
|
||||
apk_data->exists = true;
|
||||
list_add_tail(&apk_data->list, &apk_path_hash_list);
|
||||
}
|
||||
|
||||
} else if (is_manager_apk(dirpath)) {
|
||||
crown_manager(dirpath, my_ctx->private_data, 0);
|
||||
*my_ctx->stop = 1;
|
||||
|
||||
// Manager found, clear APK cache list
|
||||
list_for_each_entry_safe(pos, n, &apk_path_hash_list, list) {
|
||||
list_del(&pos->list);
|
||||
kfree(pos);
|
||||
}
|
||||
} else {
|
||||
struct apk_path_hash *apk_data = kmalloc(sizeof(struct apk_path_hash), GFP_ATOMIC);
|
||||
if (apk_data) {
|
||||
apk_data->hash = hash;
|
||||
apk_data->exists = true;
|
||||
list_add_tail(&apk_data->list, &apk_path_hash_list);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
void search_manager(const char *path, int depth, struct list_head *uid_data)
|
||||
{
|
||||
int i, stop = 0;
|
||||
struct list_head data_path_list;
|
||||
INIT_LIST_HEAD(&data_path_list);
|
||||
unsigned long data_app_magic = 0;
|
||||
|
||||
// Initialize APK cache list
|
||||
struct apk_path_hash *pos, *n;
|
||||
list_for_each_entry(pos, &apk_path_hash_list, list) {
|
||||
pos->exists = false;
|
||||
}
|
||||
|
||||
// First depth
|
||||
struct data_path data;
|
||||
strscpy(data.dirpath, path, DATA_PATH_LEN);
|
||||
data.depth = depth;
|
||||
list_add_tail(&data.list, &data_path_list);
|
||||
|
||||
for (i = depth; i >= 0; i--) {
|
||||
struct data_path *pos, *n;
|
||||
|
||||
list_for_each_entry_safe(pos, n, &data_path_list, list) {
|
||||
struct my_dir_context ctx = { .ctx.actor = my_actor,
|
||||
.data_path_list = &data_path_list,
|
||||
.parent_dir = pos->dirpath,
|
||||
.private_data = uid_data,
|
||||
.depth = pos->depth,
|
||||
.stop = &stop };
|
||||
struct file *file;
|
||||
|
||||
if (!stop) {
|
||||
file = ksu_filp_open_compat(pos->dirpath, O_RDONLY | O_NOFOLLOW, 0);
|
||||
if (IS_ERR(file)) {
|
||||
pr_err("Failed to open directory: %s, err: %ld\n", pos->dirpath, PTR_ERR(file));
|
||||
goto skip_iterate;
|
||||
}
|
||||
|
||||
// grab magic on first folder, which is /data/app
|
||||
if (!data_app_magic) {
|
||||
if (file->f_inode->i_sb->s_magic) {
|
||||
data_app_magic = file->f_inode->i_sb->s_magic;
|
||||
pr_info("%s: dir: %s got magic! 0x%lx\n", __func__, pos->dirpath, data_app_magic);
|
||||
} else {
|
||||
filp_close(file, NULL);
|
||||
goto skip_iterate;
|
||||
}
|
||||
}
|
||||
|
||||
if (file->f_inode->i_sb->s_magic != data_app_magic) {
|
||||
pr_info("%s: skip: %s magic: 0x%lx expected: 0x%lx\n", __func__, pos->dirpath,
|
||||
file->f_inode->i_sb->s_magic, data_app_magic);
|
||||
filp_close(file, NULL);
|
||||
goto skip_iterate;
|
||||
}
|
||||
|
||||
iterate_dir(file, &ctx.ctx);
|
||||
filp_close(file, NULL);
|
||||
}
|
||||
skip_iterate:
|
||||
list_del(&pos->list);
|
||||
if (pos != &data)
|
||||
kfree(pos);
|
||||
}
|
||||
}
|
||||
|
||||
// Remove stale cached APK entries
|
||||
list_for_each_entry_safe(pos, n, &apk_path_hash_list, list) {
|
||||
if (!pos->exists) {
|
||||
list_del(&pos->list);
|
||||
kfree(pos);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static bool is_uid_exist(uid_t uid, char *package, void *data)
|
||||
{
|
||||
struct list_head *list = (struct list_head *)data;
|
||||
struct uid_data *np;
|
||||
|
||||
bool exist = false;
|
||||
list_for_each_entry (np, list, list) {
|
||||
if (np->uid == uid % 100000 &&
|
||||
strncmp(np->package, package, KSU_MAX_PACKAGE_NAME) == 0) {
|
||||
exist = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return exist;
|
||||
}
|
||||
|
||||
void track_throne()
|
||||
{
|
||||
struct list_head uid_list;
|
||||
INIT_LIST_HEAD(&uid_list);
|
||||
|
||||
pr_info("track_throne triggered, attempting whitelist read\n");
|
||||
|
||||
// Try read whitelist first
|
||||
int ret = read_uid_whitelist(&uid_list);
|
||||
|
||||
if (ret < 0) {
|
||||
pr_info("whitelist read failed (%d), request userspace scan, falling back to user_de \n", ret);
|
||||
|
||||
int ret_user = scan_user_data_for_uids(&uid_list);
|
||||
|
||||
if (ret_user < 0) {
|
||||
goto out;
|
||||
} else {
|
||||
pr_info("UserDE UID: Successfully loaded %zu packages from user data directory\n", list_count_nodes(&uid_list));
|
||||
}
|
||||
|
||||
} else {
|
||||
pr_info("loaded uids from whitelist successfully\n");
|
||||
}
|
||||
|
||||
// now update uid list
|
||||
struct uid_data *np;
|
||||
struct uid_data *n;
|
||||
|
||||
// first, check if manager_uid exist!
|
||||
bool manager_exist = false;
|
||||
bool dynamic_manager_exist = false;
|
||||
|
||||
list_for_each_entry (np, &uid_list, list) {
|
||||
// if manager is installed in work profile, the uid in packages.list is still equals main profile
|
||||
// don't delete it in this case!
|
||||
int manager_uid = ksu_get_manager_uid() % 100000;
|
||||
if (np->uid == manager_uid) {
|
||||
manager_exist = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// Check for dynamic managers
|
||||
if (!dynamic_manager_exist && ksu_is_dynamic_manager_enabled()) {
|
||||
list_for_each_entry (np, &uid_list, list) {
|
||||
// Check if this uid is a dynamic manager (not the traditional manager)
|
||||
if (ksu_is_any_manager(np->uid) && np->uid != ksu_get_manager_uid()) {
|
||||
dynamic_manager_exist = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!manager_exist) {
|
||||
if (ksu_is_manager_uid_valid()) {
|
||||
pr_info("manager is uninstalled, invalidate it!\n");
|
||||
ksu_invalidate_manager_uid();
|
||||
goto prune;
|
||||
}
|
||||
pr_info("Searching manager...\n");
|
||||
search_manager("/data/app", 2, &uid_list);
|
||||
pr_info("Search manager finished\n");
|
||||
} else if (!dynamic_manager_exist && ksu_is_dynamic_manager_enabled()) {
|
||||
// Always perform search when called from dynamic manager rescan
|
||||
pr_info("Dynamic sign enabled, Searching manager...\n");
|
||||
search_manager("/data/app", 2, &uid_list);
|
||||
pr_info("Search Dynamic sign manager finished\n");
|
||||
}
|
||||
|
||||
prune:
|
||||
// then prune the allowlist
|
||||
ksu_prune_allowlist(is_uid_exist, &uid_list);
|
||||
out:
|
||||
// free uid_list
|
||||
list_for_each_entry_safe (np, n, &uid_list, list) {
|
||||
list_del(&np->list);
|
||||
kfree(np);
|
||||
}
|
||||
}
|
||||
|
||||
void ksu_throne_tracker_init()
|
||||
{
|
||||
// nothing to do
|
||||
}
|
||||
|
||||
void ksu_throne_tracker_exit()
|
||||
{
|
||||
// nothing to do
|
||||
}
|
||||
10
kernel/throne_tracker.h
Normal file
10
kernel/throne_tracker.h
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
#ifndef __KSU_H_UID_OBSERVER
|
||||
#define __KSU_H_UID_OBSERVER
|
||||
|
||||
void ksu_throne_tracker_init();
|
||||
|
||||
void ksu_throne_tracker_exit();
|
||||
|
||||
void track_throne();
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue