static void extract_cgroup(pid_t pid) {
char *fname;
if (asprintf(&fname, "/proc/%d/root%s/cgroup", pid, MNT_DIR) == -1)
errExit("asprintf");
struct stat s;
if (stat(fname, &s) == -1)
return;
// there is a cgroup file in MNT_DIR; load the information from the file
load_cgroup(fname);
free(fname);
}
static void extract_cgroup(pid_t pid) {
char *fname;
if (asprintf(&fname, "/proc/%d/root%s", pid, RUN_CGROUP_CFG) == -1)
errExit("asprintf");
struct stat s;
if (stat(fname, &s) == -1) {
free(fname);
return;
}
// there is a cgroup file CGROUP_CFG, load it!
load_cgroup(fname);
free(fname);
}