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37 lines
1.1 KiB
37 lines
1.1 KiB
# blkid for untrusted block devices |
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typeattribute blkid_untrusted coredomain; |
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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 * 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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