5e37271df8
system_file_type is a new attribute used to identify files which exist on the /system partition. It's useful for allow rules in init, which are based off of a blacklist of writable files. Additionally, it's useful for constructing neverallow rules to prevent regressions. Additionally, add commented out tests which enforce that all files on the /system partition have the system_file_type attribute. These tests will be uncommented in a future change after all the device-specific policies are cleaned up. Test: Device boots and no obvious problems. Change-Id: Id9bae6625f042594c8eba74ca712abb09702c1e5
42 lines
1.2 KiB
Text
42 lines
1.2 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 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 r_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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