tree-wide: remove Lennart's copyright lines

[thirdparty/systemd.git] / src / basic / cgroup-util.c

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index 1b0221edc4ea1e77603b42a2e870424f163f94e5..038ece4b06b1cfc7613f4513800be0b644c76f90 100644 (file)
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -1,9 +1,4 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-***/
 
 #include <dirent.h>
 #include <errno.h>
@@ -628,7 +623,7 @@ int cg_get_path(const char *controller, const char *path, const char *suffix, ch
                 if (!t)
                         return -ENOMEM;
 
-                *fs = path_kill_slashes(t);
+                *fs = path_simplify(t, false);
                 return 0;
         }
 
@@ -645,7 +640,7 @@ int cg_get_path(const char *controller, const char *path, const char *suffix, ch
         if (r < 0)
                 return r;
 
-        path_kill_slashes(*fs);
+        path_simplify(*fs, false);
         return 0;
 }
 
@@ -754,6 +749,9 @@ int cg_trim(const char *controller, const char *path, bool delete_root) {
         return r;
 }
 
+/* Create a cgroup in the hierarchy of controller.
+ * Returns 0 if the group already existed, 1 on success, negative otherwise.
+ */
 int cg_create(const char *controller, const char *path) {
         _cleanup_free_ char *fs = NULL;
         int r;
@@ -1250,7 +1248,7 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
                         if (!t)
                                 return -ENOMEM;
 
-                        *path = path_kill_slashes(t);
+                        *path = path_simplify(t, false);
                 }
 
                 if (controller)
@@ -1302,7 +1300,7 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
                         return -EINVAL;
                 }
 
-                path_kill_slashes(u);
+                path_simplify(u, false);
         }
 
         if (controller)
@@ -1333,7 +1331,7 @@ int cg_mangle_path(const char *path, char **result) {
                 if (!t)
                         return -ENOMEM;
 
-                *result = path_kill_slashes(t);
+                *result = path_simplify(t, false);
                 return 0;
         }
 
@@ -2104,23 +2102,29 @@ done:
 
 int cg_create_everywhere(CGroupMask supported, CGroupMask mask, const char *path) {
         CGroupController c;
+        bool created;
         int r;
 
         /* This one will create a cgroup in our private tree, but also
          * duplicate it in the trees specified in mask, and remove it
-         * in all others */
+         * in all others.
+         *
+         * Returns 0 if the group already existed in the systemd hierarchy,
+         * 1 on success, negative otherwise.
+         */
 
         /* First create the cgroup in our own hierarchy. */
         r = cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
         if (r < 0)
                 return r;
+        created = !!r;
 
         /* If we are in the unified hierarchy, we are done now */
         r = cg_all_unified();
         if (r < 0)
                 return r;
         if (r > 0)
-                return 0;
+                return created;
 
         /* Otherwise, do the same in the other hierarchies */
         for (c = 0; c < _CGROUP_CONTROLLER_MAX; c++) {
@@ -2135,7 +2139,7 @@ int cg_create_everywhere(CGroupMask supported, CGroupMask mask, const char *path
                         (void) cg_trim(n, path, true);
         }
 
-        return 0;
+        return created;
 }
 
 int cg_attach_everywhere(CGroupMask supported, const char *path, pid_t pid, cg_migrate_callback_t path_callback, void *userdata) {