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audit: create explicit AUDIT_SECCOMP event type

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The seccomp path was using AUDIT_ANOM_ABEND from when seccomp mode 1
could only kill a process.  While we still want to make sure an audit
record is forced on a kill, this should use a separate record type since
seccomp mode 2 introduces other behaviors.

In the case of "handled" behaviors (process wasn't killed), only emit a
record if the process is under inspection.  This change also fixes
userspace examination of seccomp audit events, since it was considered
malformed due to missing fields of the AUDIT_ANOM_ABEND event type.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Paris <eparis@redhat.com>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Julien Tinnes <jln@google.com>
Acked-by: Will Drewry <wad@chromium.org>
Acked-by: Steve Grubb <sgrubb@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kees Cook
2013-01-11 14:32:05 -08:00
committed by Linus Torvalds
parent 56ca9d9877
commit 7b9205bd77
3 changed files with 14 additions and 4 deletions
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1
include/uapi/linux/audit.h
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@@ -106,6 +106,7 @@
#define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */
#define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */
#define AUDIT_NETFILTER_CFG 1325 /* Netfilter chain modifications */
#define AUDIT_SECCOMP 1326 /* Secure Computing event */
#define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
#define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */