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/policy_unpack.c | |
| parent | 95694129b43165911dc4e8a972f0d39ad98d86be (diff) | |
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/policy_unpack.c')
| -rw-r--r-- | security/apparmor/policy_unpack.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index 25fd51edc8da..deab7c7e8dc0 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -70,13 +70,13 @@ struct aa_ext { static void audit_cb(struct audit_buffer *ab, void *va) { struct common_audit_data *sa = va; - if (sa->aad.iface.target) { - struct aa_profile *name = sa->aad.iface.target; + if (sa->aad->iface.target) { + struct aa_profile *name = sa->aad->iface.target; audit_log_format(ab, " name="); audit_log_untrustedstring(ab, name->base.hname); } - if (sa->aad.iface.pos) - audit_log_format(ab, " offset=%ld", sa->aad.iface.pos); + if (sa->aad->iface.pos) + audit_log_format(ab, " offset=%ld", sa->aad->iface.pos); } /** @@ -94,13 +94,15 @@ static int audit_iface(struct aa_profile *new, const char *name, { struct aa_profile *profile = __aa_current_profile(); struct common_audit_data sa; + struct apparmor_audit_data aad = {0,}; COMMON_AUDIT_DATA_INIT(&sa, NONE); + sa.aad = &aad; if (e) - sa.aad.iface.pos = e->pos - e->start; - sa.aad.iface.target = new; - sa.aad.name = name; - sa.aad.info = info; - sa.aad.error = error; + aad.iface.pos = e->pos - e->start; + aad.iface.target = new; + aad.name = name; + aad.info = info; + aad.error = error; return aa_audit(AUDIT_APPARMOR_STATUS, profile, GFP_KERNEL, &sa, audit_cb); |