/*-*- 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" /* This is split out since it needs label calls, either directly or * indirectly. */ 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_prefix_label("/sys/fs/cgroup", 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; }