2de02877a3
Android's native bridge functionality allows an Android native
app written on one CPU architecture to run on a different architecture.
For example, Android ARM apps may run on an x86 CPU.
To support this, the native bridge functionality needs to replace
/proc/cpuinfo with the version from /system/lib/<ISA>/cpuinfo
using a bind mount. See commit ab0da5a9a6860046619629b8e6b83692d35dff86
in system/core.
This change:
1) Creates a new label proc_cpuinfo, and assigns /proc/cpuinfo
that label.
2) Grants read-only access to all SELinux domains, to avoid
breaking pre-existing apps.
3) Grants zygote mounton capabilities for that file, so zygote
can replace the file as necessary.
Addresses the following denial:
avc: denied { mounton } for path="/proc/cpuinfo" dev="proc" ino=4026532012 scontext=u:r:zygote:s0 tcontext=u:object_r:proc:s0 tclass=file
Bug: 17671501
Change-Id: Ib70624fba2baeccafbc0a41369833f76b976ee20
34 lines
1.8 KiB
Text
34 lines
1.8 KiB
Text
# Label inodes with the fs label.
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genfscon rootfs / u:object_r:rootfs:s0
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# proc labeling can be further refined (longest matching prefix).
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genfscon proc / u:object_r:proc:s0
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genfscon proc /net u:object_r:proc_net:s0
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genfscon proc /net/xt_qtaguid/ctrl u:object_r:qtaguid_proc:s0
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genfscon proc /cpuinfo u:object_r:proc_cpuinfo:s0
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genfscon proc /sysrq-trigger u:object_r:proc_sysrq:s0
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genfscon proc /sys/fs/protected_hardlinks u:object_r:proc_security:s0
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genfscon proc /sys/fs/protected_symlinks u:object_r:proc_security:s0
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genfscon proc /sys/fs/suid_dumpable u:object_r:proc_security:s0
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genfscon proc /sys/kernel/core_pattern u:object_r:usermodehelper:s0
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genfscon proc /sys/kernel/dmesg_restrict u:object_r:proc_security:s0
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genfscon proc /sys/kernel/hotplug u:object_r:usermodehelper:s0
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genfscon proc /sys/kernel/kptr_restrict u:object_r:proc_security:s0
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genfscon proc /sys/kernel/modprobe u:object_r:usermodehelper:s0
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genfscon proc /sys/kernel/modules_disabled u:object_r:proc_security:s0
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genfscon proc /sys/kernel/poweroff_cmd u:object_r:usermodehelper:s0
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genfscon proc /sys/kernel/randomize_va_space u:object_r:proc_security:s0
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genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
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genfscon proc /sys/net u:object_r:proc_net:s0
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genfscon proc /sys/vm/mmap_min_addr u:object_r:proc_security:s0
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# selinuxfs booleans can be individually labeled.
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genfscon selinuxfs / u:object_r:selinuxfs:s0
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genfscon cgroup / u:object_r:cgroup:s0
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# sysfs labels can be set by userspace.
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genfscon sysfs / u:object_r:sysfs:s0
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genfscon inotifyfs / u:object_r:inotify:s0
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genfscon vfat / u:object_r:vfat:s0
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genfscon debugfs / u:object_r:debugfs:s0
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genfscon fuse / u:object_r:fuse:s0
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genfscon pstore / u:object_r:pstorefs:s0
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genfscon functionfs / u:object_r:functionfs:s0
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genfscon usbfs / u:object_r:usbfs:s0
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