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
23 lines
721 B
Plaintext
23 lines
721 B
Plaintext
# blkid called from vold
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typeattribute blkid coredomain;
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type blkid_exec, system_file_type, exec_type, file_type;
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# Allowed read-only access to encrypted devices to extract UUID/label
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allow blkid block_device:dir search;
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allow blkid userdata_block_device:blk_file r_file_perms;
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allow blkid dm_device:blk_file r_file_perms;
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# Allow stdin/out back to vold
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allow blkid vold:fd use;
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allow blkid vold:fifo_file { read write getattr };
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# For blkid launched through popen()
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allow blkid blkid_exec:file rx_file_perms;
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# Only allow entry from vold
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neverallow { domain -vold } blkid:process transition;
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neverallow * blkid:process dyntransition;
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neverallow blkid { file_type fs_type -blkid_exec -shell_exec }:file entrypoint;
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