35895ddb79
The gpt_fdisk project was updated recently, but sepolicy was not updated
with it :) Now sgdisk can use BLKPBSZGET to detect the physical block
size. Seen on cuttlefish when adding external SD Card support to it.
avc: denied { ioctl } for comm="sgdisk" path="/dev/block/vold/disk:252,16"
dev="tmpfs" ino=8625 ioctlcmd=0x127b scontext=u:r:sgdisk:s0
tcontext=u:object_r:vold_device:s0 tclass=blk_file permissive=0
Bug: 156286088
Change-Id: I9f2df88ee253261b52f3022838380fbb1cab6da0
36 lines
1.5 KiB
Text
36 lines
1.5 KiB
Text
# sgdisk called from vold
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type sgdisk, domain;
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type sgdisk_exec, system_file_type, exec_type, file_type;
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# Allowed to read/write low-level partition tables
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allow sgdisk block_device:dir search;
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allow sgdisk vold_device:blk_file rw_file_perms;
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# HDIO_GETGEO needed to get the number of disk heads
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# on vold_device. How quaint.
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allowxperm sgdisk vold_device:blk_file ioctl { HDIO_GETGEO };
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# sgdisk also uses BLKGETSIZE and BLKGETSIZE64. BLKGETSIZE64
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# is granted to all block device users in domain.te, so
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# no need to mention it here. sgdisk should not be
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# using the BLKGETSIZE ioctl as it is useless for devices over
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# 2T in size, but we allow it for now and hope that sgdisk
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# will fix their bug.
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allowxperm sgdisk vold_device:blk_file ioctl { BLKGETSIZE };
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# Force a re-read of the partition table.
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allowxperm sgdisk vold_device:blk_file ioctl { BLKRRPART };
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# Allow reading of the physical block size.
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allowxperm sgdisk vold_device:blk_file ioctl { BLKPBSZGET };
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# Inherit and use pty created by android_fork_execvp()
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allow sgdisk devpts:chr_file { read write ioctl getattr };
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# Allow stdin/out back to vold
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allow sgdisk vold:fd use;
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allow sgdisk vold:fifo_file { read write getattr };
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# Used to probe kernel to reload partition tables
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allow sgdisk self:global_capability_class_set sys_admin;
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# Only allow entry from vold
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neverallow { domain -vold } sgdisk:process transition;
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neverallow * sgdisk:process dyntransition;
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neverallow sgdisk { file_type fs_type -sgdisk_exec }:file entrypoint;
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