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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <stdlib.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <ftw.h>
#include "cgroup-util.h"
#include "log.h"
#include "set.h"
#include "macro.h"
#include "util.h"
#include "mkdir.h"
int cg_create(const char *controller, const char *path) {
char *fs;
int r;
assert(controller);
assert(path);
if ((r = cg_get_path(controller, path, NULL, &fs)) < 0)
return r;
r = mkdir_parents(fs, 0755);
if (r >= 0) {
if (mkdir(fs, 0755) >= 0)
r = 1;
else if (errno == EEXIST)
r = 0;
else
r = -errno;
}
free(fs);
return r;
}
int cg_create_and_attach(const char *controller, const char *path, pid_t pid) {
int r, q;
assert(controller);
assert(path);
assert(pid >= 0);
if ((r = cg_create(controller, path)) < 0)
return r;
if ((q = cg_attach(controller, path, pid)) < 0)
return q;
/* This does not remove the cgroup on failure */
return r;
}
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