X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Faudit.c;h=4701c0a8de856548d1eb7b8e0d31dd9304636872;hb=f32d2db140150b9d38684a699c9875b6e24ca27c;hp=9ab46408da43ff99fa099ba838e300f90aabe75d;hpb=5b12334d35eadf1f45cc3d631fd1a2e72ffaea0a;p=elogind.git

diff --git a/src/shared/audit.c b/src/shared/audit.c
index 9ab46408d..4701c0a8d 100644
--- a/src/shared/audit.c
+++ b/src/shared/audit.c
@@ -42,14 +42,7 @@ int audit_session_from_pid(pid_t pid, uint32_t *id) {
 
         assert(id);
 
-        /* Audit doesn't support containers right now */
-        if (detect_container(NULL) > 0)
-                return -ENOTSUP;
-
-        if (pid == 0)
-                p = "/proc/self/sessionid";
-        else
-                p = procfs_file_alloca(pid, "sessionid");
+        p = procfs_file_alloca(pid, "sessionid");
 
         r = read_one_line_file(p, &s);
         if (r < 0)
@@ -74,14 +67,7 @@ int audit_loginuid_from_pid(pid_t pid, uid_t *uid) {
 
         assert(uid);
 
-        /* Audit doesn't support containers right now */
-        if (detect_container(NULL) > 0)
-                return -ENOTSUP;
-
-        if (pid == 0)
-                p = "/proc/self/loginuid";
-        else
-                p = procfs_file_alloca(pid, "loginuid");
+        p = procfs_file_alloca(pid, "loginuid");
 
         r = read_one_line_file(p, &s);
         if (r < 0)
@@ -91,9 +77,24 @@ int audit_loginuid_from_pid(pid_t pid, uid_t *uid) {
         if (r < 0)
                 return r;
 
-        if (u == (uid_t) -1)
-                return -ENXIO;
-
         *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;
+}