08d4c8fa6e
This commit adds fake 31.0 prebuilt. The prebuilt is based on AOSP policy, but slightly modified so the set of types and attributes is a subset of real 31.0 prebuilt (sc-dev policy). Steps taken to make the fake prebuilt: 1) build plat_sepolicy.cil both on AOSP and sc-dev, with lunch target aosp_arm64-eng. 2) diff both outputs to find out which types and attributes don't exist. 3) remove all relevant files and statements. As a result, the following types are removed. artd artd_exec artd_service power_stats_service transformer_service virtualizationservice virtualizationservice_data_file virtualizationservice_exec Bug: 189161483 Test: N/A, will do after adding 31.0 mapping files. Change-Id: Ia957fc32b1838dae730d9dd7bd917d684d4a24cf Merged-In: Ia4ea2999f4bc8ae80f13e51d99fba3e98e293447
78 lines
2.5 KiB
Text
78 lines
2.5 KiB
Text
type crash_dump, domain;
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type crash_dump_exec, system_file_type, exec_type, file_type;
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# crash_dump might inherit CAP_SYS_PTRACE from a privileged process,
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# which will result in an audit log even when it's allowed to trace.
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dontaudit crash_dump self:global_capability_class_set { sys_ptrace };
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userdebug_or_eng(`
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allow crash_dump logd:process { ptrace signal sigchld sigstop sigkill };
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# Let crash_dump write to /dev/kmsg_debug crashes that happen before logd comes up.
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allow crash_dump kmsg_debug_device:chr_file { open append };
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')
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# Use inherited file descriptors
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allow crash_dump domain:fd use;
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# Read/write IPC pipes inherited from crashing processes.
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allow crash_dump domain:fifo_file { read write };
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# Append to pipes given to us by processes requesting dumps (e.g. dumpstate)
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allow crash_dump domain:fifo_file { append };
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# Read information from /proc/$PID.
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allow crash_dump domain:process getattr;
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r_dir_file(crash_dump, domain)
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allow crash_dump exec_type:file r_file_perms;
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# Read /data/dalvik-cache.
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allow crash_dump dalvikcache_data_file:dir { search getattr };
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allow crash_dump dalvikcache_data_file:file r_file_perms;
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# Read APEX data directories.
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allow crash_dump apex_module_data_file:dir { getattr search };
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# Read APK files.
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r_dir_file(crash_dump, apk_data_file);
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# Read all /vendor
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r_dir_file(crash_dump, { vendor_file same_process_hal_file })
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# Talk to tombstoned
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unix_socket_connect(crash_dump, tombstoned_crash, tombstoned)
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# Talk to ActivityManager.
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unix_socket_connect(crash_dump, system_ndebug, system_server)
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# Append to ANR files.
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allow crash_dump anr_data_file:file { append getattr };
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# Append to tombstone files.
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allow crash_dump tombstone_data_file:file { append getattr };
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# crash_dump writes out logcat logs at the bottom of tombstones,
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# which is super useful in some cases.
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unix_socket_connect(crash_dump, logdr, logd)
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# Crash dump is not intended to access the following files. Since these
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# are WAI, suppress the denials to clean up the logs.
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dontaudit crash_dump {
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core_data_file_type
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vendor_file_type
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}:dir search;
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dontaudit crash_dump system_data_file:{ lnk_file file } read;
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dontaudit crash_dump property_type:file read;
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# Suppress denials for files in /proc that are passed
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# across exec().
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dontaudit crash_dump proc_type:file rw_file_perms;
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###
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### neverallow assertions
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###
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# A domain transition must occur for crash_dump to get the privileges needed to trace the process.
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# Do not allow the execution of crash_dump without a domain transition.
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neverallow domain crash_dump_exec:file execute_no_trans;
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