X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshared%2Faudit.c;h=54148fcf1836a40c0062a649f6ea676d77a9a2b8;hp=f101050825384ff43e5b8e1f711dfc6c93f21e09;hb=6ec9b87c4ecf5144b5ea845a53a352dd9f2d173a;hpb=f841a154efbb3162d2a732936f031ac7a6b0d4cf

diff --git a/src/shared/audit.c b/src/shared/audit.c
index f10105082..54148fcf1 100644
--- a/src/shared/audit.c
+++ b/src/shared/audit.c
@@ -19,20 +19,14 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <assert.h>
-#include <string.h>
-#include <unistd.h>
 #include <errno.h>
-#include <stdlib.h>
 #include <stdio.h>
-#include <ctype.h>
 
 #include "macro.h"
 #include "audit.h"
 #include "util.h"
-#include "log.h"
+#include "process-util.h"
 #include "fileio.h"
-#include "virt.h"
 
 int audit_session_from_pid(pid_t pid, uint32_t *id) {
         _cleanup_free_ char *s = NULL;
@@ -52,7 +46,7 @@ int audit_session_from_pid(pid_t pid, uint32_t *id) {
         if (r < 0)
                 return r;
 
-        if (u == (uint32_t) -1 || u <= 0)
+        if (u == AUDIT_SESSION_INVALID || u <= 0)
                 return -ENXIO;
 
         *id = u;
@@ -80,3 +74,21 @@ int audit_loginuid_from_pid(pid_t pid, uid_t *uid) {
         *uid = (uid_t) u;
         return 0;
 }
+
+bool use_audit(void) {
+        static int cached_use = -1;
+
+        if (cached_use < 0) {
+                int fd;
+
+                fd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, NETLINK_AUDIT);
+                if (fd < 0)
+                        cached_use = errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT;
+                else {
+                        cached_use = true;
+                        safe_close(fd);
+                }
+        }
+
+        return cached_use;
+}