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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-24 22:48:51 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-27 03:13:57 +0200 |
| commit | f01e1af445fac107e91d62a2d59dd535f633810b (patch) | |
| tree | f5da7e4162f0a6f4bb50e4cb41f6a06c672f66b0 /security/selinux/ss | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus (diff) | |
| download | linux-f01e1af445fac107e91d62a2d59dd535f633810b.tar.xz linux-f01e1af445fac107e91d62a2d59dd535f633810b.zip | |
selinux: don't pass in NULL avd to avc_has_perm_noaudit
Right now security_get_user_sids() will pass in a NULL avd pointer to
avc_has_perm_noaudit(), which then forces that function to have a dummy
entry for that case and just generally test it.
Don't do it. The normal callers all pass a real avd pointer, and this
helper function is incredibly hot. So don't make avc_has_perm_noaudit()
do conditional stuff that isn't needed for the common case.
This also avoids some duplicated stack space.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/selinux/ss')
| -rw-r--r-- | security/selinux/ss/services.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index c3e4b52699f4..973e00e34fa9 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -2217,10 +2217,11 @@ out_unlock: goto out; } for (i = 0, j = 0; i < mynel; i++) { + struct av_decision dummy_avd; rc = avc_has_perm_noaudit(fromsid, mysids[i], SECCLASS_PROCESS, /* kernel value */ PROCESS__TRANSITION, AVC_STRICT, - NULL); + &dummy_avd); if (!rc) mysids2[j++] = mysids[i]; cond_resched(); |