#include "set.h"
#include "macro.h"
#include "util.h"
+#include "strv.h"
int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) {
char *fs;
}
static int join_path(const char *controller, const char *path, const char *suffix, char **fs) {
- char *t;
+ char *t = NULL;
if (!(controller || path))
return -EINVAL;
assert(result);
/* First check if it already is a filesystem path */
- if (path_is_absolute(path) &&
- path_startswith(path, "/sys/fs/cgroup") &&
+ if (path_startswith(path, "/sys/fs/cgroup") &&
access(path, F_OK) >= 0) {
- if (!(t = strdup(path)))
+ t = strdup(path);
+ if (!t)
return -ENOMEM;
*result = t;
}
/* Otherwise treat it as cg spec */
- if ((r = cg_split_spec(path, &c, &p)) < 0)
+ r = cg_split_spec(path, &c, &p);
+ if (r < 0)
return r;
r = cg_get_path(c ? c : SYSTEMD_CGROUP_CONTROLLER, p ? p : "/", NULL, result);
*path = p;
return 0;
}
+
+char **cg_shorten_controllers(char **controllers) {
+ char **f, **t;
+
+ controllers = strv_uniq(controllers);
+
+ if (!controllers)
+ return controllers;
+
+ for (f = controllers, t = controllers; *f; f++) {
+ char *cc;
+
+ if (streq(*f, "systemd") || streq(*f, SYSTEMD_CGROUP_CONTROLLER)) {
+ free(*f);
+ continue;
+ }
+
+ cc = alloca(sizeof("/sys/fs/cgroup/") + strlen(*f));
+ strcpy(stpcpy(cc, "/sys/fs/cgroup/"), *f);
+
+ if (access(cc, F_OK) < 0) {
+ log_debug("Controller %s is not available, removing from controllers list.", *f);
+ free(*f);
+ continue;
+ }
+
+ *(t++) = *f;
+ }
+
+ *t = NULL;
+ return controllers;
+}