9d8f7eac8a
Allow sgdisk to force the kernel to re-read the partition table.
Addresses the following denial:
avc: denied { ioctl } for path=/dev/block/vold/disk:7,0 dev=tmpfs ino=710640 ioctlcmd=125f scontext=u:r:sgdisk:s0 tcontext=u:object_r:vold_device:s0 tclass=blk_file permissive=0
Bug: 118890056
Test: policy compiles
Test:
1) adb shell sm set-force-adoptable on
2) adb shell sm set-virtual-disk true
3) On device, pick the drop-down notification and
choose "use as phone/internal storage" to adopt the virtual SD card.
Change-Id: I6825cf526cc48aa2a17afab14eadb6134bfc56f9
35 lines
1.4 KiB
Plaintext
35 lines
1.4 KiB
Plaintext
# 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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# 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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