util: modernize readlink_malloc() a bit

[elogind.git] / src / shared / cgroup-util.c

diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
index 855c9cd160c19c2794822d41363c1c357d572986..e6ceb99454b8460408c64f9797b0ed884e04624c 100644 (file)
--- a/src/shared/cgroup-util.c
+++ b/src/shared/cgroup-util.c
@@ -194,12 +194,12 @@ int cg_kill(const char *controller, const char *path, int sig, bool sigcont, boo
                         if (kill(pid, sig) < 0) {
                                 if (ret >= 0 && errno != ESRCH)
                                         ret = -errno;
-                        } else if (ret == 0) {
-
+                        } else {
                                 if (sigcont)
                                         kill(pid, SIGCONT);
 
-                                ret = 1;
+                                if (ret == 0)
+                                        ret = 1;
                         }
 
                         done = false;
@@ -1332,11 +1332,10 @@ int cg_pid_get_machine_name(pid_t pid, char **machine) {
 
 int cg_path_get_session(const char *path, char **session) {
         const char *e, *n, *x;
-        char *s, *r;
+        char *s;
         size_t l;
 
         assert(path);
-        assert(session);
 
         /* Skip slices, if there are any */
         e = skip_slices(path);
@@ -1358,11 +1357,16 @@ int cg_path_get_session(const char *path, char **session) {
         if (l <= 6)
                 return -ENOENT;
 
-        r = strndup(x, l - 6);
-        if (!r)
-                return -ENOMEM;
+        if (session) {
+                char *r;
+
+                r = strndup(x, l - 6);
+                if (!r)
+                        return -ENOMEM;
+
+                *session = r;
+        }
 
-        *session = r;
         return 0;
 }
 
@@ -1370,8 +1374,6 @@ int cg_pid_get_session(pid_t pid, char **session) {
         _cleanup_free_ char *cgroup = NULL;
         int r;
 
-        assert(session);
-
         r = cg_pid_get_path_shifted(pid, NULL, &cgroup);
         if (r < 0)
                 return r;