0c7bc58e91
Remove from blkid, blkid_untrusted, fsck, fsck_untrusted, sdcardd and
sgdisk.
Tested by adding external sdcard with and without
"adb shell sm set-force-adoptable true" command.
Address the following denials:
avc: denied { read } for name="swaps" dev="proc" ino=4026536590 scontext=u:r:fsck:s0 tcontext=u:object_r:proc:s0 tclass=file
avc: denied { open } for path="/proc/swaps" dev="proc" ino=4026536590 scontext=u:r:fsck:s0 tcontext=u:object_r:proc:s0 tclass=file
avc: denied { getattr } for path="/proc/swaps" dev="proc" ino=4026536590 scontext=u:r:fsck:s0 tcontext=u:object_r:proc:s0 tclass=file
avc: denied { read } for name="filesystems" dev="proc" ino=4026536591 scontext=u:r:blkid:s0 tcontext=u:object_r:proc:s0 tclass=file
avc: denied { open } for path="/proc/filesystems" dev="proc" ino=4026536591 scontext=u:r:blkid:s0 tcontext=u:object_r:proc:s0 tclass=file
avc: denied { getattr } for path="/proc/filesystems" dev="proc" ino=4026536591 scontext=u:r:blkid:s0 tcontext=u:object_r:proc:s0 tclass=file
Change-Id: I097e2ba5205e43f8ee613dae063f773a35ce3d73
36 lines
1.1 KiB
Text
36 lines
1.1 KiB
Text
# blkid for untrusted block devices
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type blkid_untrusted, domain;
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# Allowed read-only access to vold block devices to extract UUID/label
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allow blkid_untrusted block_device:dir search;
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allow blkid_untrusted vold_device:blk_file r_file_perms;
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# Allow stdin/out back to vold
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allow blkid_untrusted vold:fd use;
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allow blkid_untrusted vold:fifo_file { read write getattr };
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# For blkid launched through popen()
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allow blkid_untrusted blkid_exec:file rx_file_perms;
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###
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### neverallow rules
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###
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# Untrusted blkid should never be run on block devices holding sensitive data
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neverallow blkid_untrusted {
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boot_block_device
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frp_block_device
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metadata_block_device
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recovery_block_device
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root_block_device
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swap_block_device
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system_block_device
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userdata_block_device
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cache_block_device
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dm_device
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}:blk_file no_rw_file_perms;
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# Only allow entry from vold via blkid binary
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neverallow { domain -vold } blkid_untrusted:process transition;
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neverallow domain blkid_untrusted:process dyntransition;
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neverallow blkid_untrusted { file_type fs_type -blkid_exec -shell_exec }:file entrypoint;
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