selinux: enable per-file labeling for debugfs files.
Add support for per-file labeling of debugfs files so that we can distinguish them in policy. This is particularly important in Android where certain debugfs files have to be writable by apps and therefore the debugfs directory tree can be read and searched by all. Since debugfs is entirely kernel-generated, the directory tree is immutable by userspace, and the inodes are pinned in memory, we can simply use the same approach as with proc and label the inodes from policy based on pathname from the root of the debugfs filesystem. Generalize the existing labeling support used for proc and reuse it for debugfs too. Signed-off-by:Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by:
Paul Moore <pmoore@redhat.com>
parent
6c6d2e9b
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