d22987b4da
Motivation: Domain is overly permissive. Start removing permissions from domain and assign them to the domain_deprecated attribute. Domain_deprecated and domain can initially be assigned to all domains. The goal is to not assign domain_deprecated to new domains and to start removing domain_deprecated where it is not required or reassigning the appropriate permissions to the inheriting domain when necessary. Bug: 25433265 Change-Id: I8b11cb137df7bdd382629c98d916a73fe276413c
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, domain_deprecated;
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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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