mirror of
https://github.com/SELinuxProject/selinux
synced 2025-01-05 04:59:42 +00:00
7e979b56fd
Pin the file to operate on in restorecon_sb() to prevent symlink attacks
in between the label database lookup, the current context query and the
final context write. Also don't use the file information from
fts_read(3), which might also be out of sync.
Due to querying file information twice, one in fts_read(3) needed for
the cross device check and one on the pinned file descriptor for the
database lookup, there is a slight slowdown:
[current]
Time (mean ± σ): 14.456 s ± 0.306 s [User: 45.863 s, System: 4.463 s]
Range (min … max): 14.275 s … 15.294 s 10 runs
[changed]
Time (mean ± σ): 15.843 s ± 0.045 s [User: 46.274 s, System: 9.495 s]
Range (min … max): 15.787 s … 15.916 s 10 runs
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Acked-by: James Carter <jwcart2@gmail.com>
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