5fc825c917
If the sdcard daemon is restarted (crash or otherwise), one of the first
things it attempts to do is umount the previously mounted /mnt/shell/emulated
fuse filesystem, which is denied by SELinux with the following denial:
sdcard : type=1400 audit(0.0:6997): avc: denied { unmount } for scontext=u:r:sdcardd:s0 tcontext=u:object_r:fuse:s0 tclass=filesystem permissive=0
Allow the operation.
Steps to reproduce:
1) adb shell into the device and su to root
2) run "kill -9 [PID OF SDCARD]
Expected:
sdcard daemon successfully restarts without error message.
Actual:
SELinux denial above, plus attempts to mount a new filesystem
on top of the existing filesystem.
(cherrypicked from commit abfd427a32)
Bug: 17383009
Change-Id: I386bfc98e2b5b32b1d11408f7cfbd6e3c1af68f4
23 lines
814 B
Text
23 lines
814 B
Text
type sdcardd, domain;
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type sdcardd_exec, exec_type, file_type;
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init_daemon_domain(sdcardd)
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allow sdcardd cgroup:dir create_dir_perms;
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allow sdcardd fuse_device:chr_file rw_file_perms;
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allow sdcardd rootfs:dir mounton;
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allow sdcardd sdcard_type:filesystem { mount unmount };
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allow sdcardd self:capability { setuid setgid dac_override sys_admin sys_resource };
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allow sdcardd sdcard_type:dir create_dir_perms;
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allow sdcardd sdcard_type:file create_file_perms;
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type_transition sdcardd system_data_file:{ dir file } media_rw_data_file;
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allow sdcardd media_rw_data_file:dir create_dir_perms;
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allow sdcardd media_rw_data_file:file create_file_perms;
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# Read /data/system/packages.list.
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allow sdcardd system_data_file:file r_file_perms;
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# Read /data/.layout_version
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allow sdcardd install_data_file:file r_file_perms;
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