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-rw-r--r--src/shared/cgroup-util.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
index f57f2b2c42..8a4eddab7a 100644
--- a/src/shared/cgroup-util.c
+++ b/src/shared/cgroup-util.c
@@ -39,6 +39,7 @@
#include "unit-name.h"
#include "fileio.h"
#include "special.h"
+#include "mkdir.h"
int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) {
_cleanup_free_ char *fs = NULL;
@@ -618,6 +619,46 @@ int cg_delete(const char *controller, const char *path) {
return r == -ENOENT ? 0 : r;
}
+int cg_create(const char *controller, const char *path) {
+ _cleanup_free_ char *fs = NULL;
+ int r;
+
+ r = cg_get_path_and_check(controller, path, NULL, &fs);
+ if (r < 0)
+ return r;
+
+ r = mkdir_parents(fs, 0755);
+ if (r < 0)
+ return r;
+
+ if (mkdir(fs, 0755) < 0) {
+
+ if (errno == EEXIST)
+ return 0;
+
+ return -errno;
+ }
+
+ return 1;
+}
+
+int cg_create_and_attach(const char *controller, const char *path, pid_t pid) {
+ int r, q;
+
+ assert(pid >= 0);
+
+ r = cg_create(controller, path);
+ if (r < 0)
+ return r;
+
+ q = cg_attach(controller, path, pid);
+ if (q < 0)
+ return q;
+
+ /* This does not remove the cgroup on failure */
+ return r;
+}
+
int cg_attach(const char *controller, const char *path, pid_t pid) {
_cleanup_free_ char *fs = NULL;
char c[DECIMAL_STR_MAX(pid_t) + 2];