1# blkid called from vold
2
3typeattribute blkid coredomain;
4
5type blkid_exec, system_file_type, exec_type, file_type;
6
7# Allowed read-only access to encrypted devices to extract UUID/label
8allow blkid block_device:dir search;
9allow blkid userdata_block_device:blk_file r_file_perms;
10allow blkid dm_device:blk_file r_file_perms;
11
12# Allow stdin/out back to vold
13allow blkid vold:fd use;
14allow blkid vold:fifo_file { read write getattr };
15
16# For blkid launched through popen()
17allow blkid blkid_exec:file rx_file_perms;
18
19# Only allow entry from vold
20neverallow { domain -vold } blkid:process transition;
21neverallow * blkid:process dyntransition;
22neverallow blkid { file_type fs_type -blkid_exec -shell_exec }:file entrypoint;
23