diff options
| author | Eric Paris <eparis@redhat.com> | 2012-04-03 09:37:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-04-03 09:48:40 -0700 |
| commit | 3b3b0e4fc15efa507b902d90cea39e496a523c3b (patch) | |
| tree | d7b91c21ad6c6f4ac21dd51297b74eec47c61684 /security/apparmor/lsm.c | |
| parent | 95694129b43165911dc4e8a972f0d39ad98d86be (diff) | |
| download | lwn-3b3b0e4fc15efa507b902d90cea39e496a523c3b.tar.gz lwn-3b3b0e4fc15efa507b902d90cea39e496a523c3b.zip | |
LSM: shrink sizeof LSM specific portion of common_audit_data
Linus found that the gigantic size of the common audit data caused a big
perf hit on something as simple as running stat() in a loop. This patch
requires LSMs to declare the LSM specific portion separately rather than
doing it in a union. Thus each LSM can be responsible for shrinking their
portion and don't have to pay a penalty just because other LSMs have a
bigger space requirement.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/apparmor/lsm.c')
| -rw-r--r-- | security/apparmor/lsm.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c index 97ce8fae49b3..ad05d391974d 100644 --- a/security/apparmor/lsm.c +++ b/security/apparmor/lsm.c @@ -588,10 +588,12 @@ static int apparmor_setprocattr(struct task_struct *task, char *name, error = aa_setprocattr_permipc(args); } else { struct common_audit_data sa; + struct apparmor_audit_data aad = {0,}; COMMON_AUDIT_DATA_INIT(&sa, NONE); - sa.aad.op = OP_SETPROCATTR; - sa.aad.info = name; - sa.aad.error = -EINVAL; + sa.aad = &aad; + aad.op = OP_SETPROCATTR; + aad.info = name; + aad.error = -EINVAL; return aa_audit(AUDIT_APPARMOR_DENIED, __aa_current_profile(), GFP_KERNEL, &sa, NULL); |