916bd874d6
This adds sepolicy rule to allow uncrypt module to write
on OTA zip (for f2fs_pin_file functionality).
Also, add a few dontaudit rules to suppress harmless denials.
Denials:
I uncrypt : type=1400 audit(0.0:177): avc: denied { write } for name="update.zip" dev="dm-10" ino=7727 scontext=u:r:uncrypt:s0 tcontext=u:object_r:ota_package_file:s0 tclass=file permissive=0
I uncrypt : type=1400 audit(0.0:175): avc: denied { search } for name="/" dev="sda9" ino=2 scontext=u:r:uncrypt:s0 tcontext=u:object_r:metadata_file:s0 tclass=dir permissive=0
I uncrypt : type=1400 audit(0.0:176): avc: denied { search } for name="gsi" dev="sda9" ino=19 scontext=u:r:uncrypt:s0 tcontext=u:object_r:gsi_metadata_file:s0 tclass=dir permissive=0
Bug: 158070965
Change-Id: I473c5ee218c32b481040ef85caca907a48aadee6
46 lines
1.4 KiB
Text
46 lines
1.4 KiB
Text
# uncrypt
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type uncrypt, domain, mlstrustedsubject;
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type uncrypt_exec, system_file_type, exec_type, file_type;
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allow uncrypt self:global_capability_class_set { dac_override dac_read_search };
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userdebug_or_eng(`
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# For debugging, allow /data/local/tmp access
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r_dir_file(uncrypt, shell_data_file)
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')
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# Read /cache/recovery/command
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# Read /cache/recovery/uncrypt_file
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allow uncrypt cache_file:dir search;
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allow uncrypt cache_recovery_file:dir rw_dir_perms;
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allow uncrypt cache_recovery_file:file create_file_perms;
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# Read and write(for f2fs_pin_file) on OTA zip file at /data/ota_package/.
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allow uncrypt ota_package_file:dir r_dir_perms;
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allow uncrypt ota_package_file:file rw_file_perms;
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# Write to /dev/socket/uncrypt
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unix_socket_connect(uncrypt, uncrypt, uncrypt)
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# Set a property to reboot the device.
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set_prop(uncrypt, powerctl_prop)
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# Raw writes to block device
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allow uncrypt self:global_capability_class_set sys_rawio;
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allow uncrypt misc_block_device:blk_file w_file_perms;
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allow uncrypt block_device:dir r_dir_perms;
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# Access userdata block device.
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allow uncrypt userdata_block_device:blk_file w_file_perms;
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r_dir_file(uncrypt, rootfs)
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# uncrypt reads /proc/cmdline
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allow uncrypt proc_cmdline:file r_file_perms;
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# Read files in /sys
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r_dir_file(uncrypt, sysfs_dt_firmware_android)
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# Suppress the denials coming from ReadDefaultFstab call.
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dontaudit uncrypt gsi_metadata_file:dir search;
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dontaudit uncrypt metadata_file:dir search;
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