148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "mkdir.h"
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#include "label.h"
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#include "util.h"
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int mkdir_label(const char *path, mode_t mode) {
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return label_mkdir(path, mode, true);
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}
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static int makedir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid, bool apply) {
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struct stat st;
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if (label_mkdir(path, mode, apply) >= 0)
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if (chmod_and_chown(path, mode, uid, gid) < 0)
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return -errno;
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if (lstat(path, &st) < 0)
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return -errno;
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if ((st.st_mode & 0777) != mode ||
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st.st_uid != uid ||
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st.st_gid != gid ||
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!S_ISDIR(st.st_mode)) {
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errno = EEXIST;
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return -errno;
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}
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return 0;
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}
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int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid) {
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return makedir_safe(path, mode, uid, gid, false);
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}
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int mkdir_safe_label(const char *path, mode_t mode, uid_t uid, gid_t gid) {
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return makedir_safe(path, mode, uid, gid, true);
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}
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static int makedir_parents(const char *path, mode_t mode, bool apply) {
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struct stat st;
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const char *p, *e;
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assert(path);
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/* return immediately if directory exists */
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e = strrchr(path, '/');
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if (!e)
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return -EINVAL;
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p = strndupa(path, e - path);
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if (stat(p, &st) >= 0) {
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if ((st.st_mode & S_IFMT) == S_IFDIR)
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return 0;
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else
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return -ENOTDIR;
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}
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/* create every parent directory in the path, except the last component */
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p = path + strspn(path, "/");
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for (;;) {
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int r;
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char *t;
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e = p + strcspn(p, "/");
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p = e + strspn(e, "/");
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/* Is this the last component? If so, then we're
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* done */
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if (*p == 0)
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return 0;
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t = strndup(path, e - path);
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if (!t)
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return -ENOMEM;
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r = label_mkdir(t, mode, apply);
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free(t);
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if (r < 0 && errno != EEXIST)
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return -errno;
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}
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}
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int mkdir_parents(const char *path, mode_t mode) {
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return makedir_parents(path, mode, false);
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}
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int mkdir_parents_label(const char *path, mode_t mode) {
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return makedir_parents(path, mode, true);
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}
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static int is_dir(const char* path) {
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struct stat st;
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if (stat(path, &st) < 0)
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return -errno;
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return S_ISDIR(st.st_mode);
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}
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static int makedir_p(const char *path, mode_t mode, bool apply) {
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int r;
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/* Like mkdir -p */
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r = makedir_parents(path, mode, apply);
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if (r < 0)
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return r;
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r = label_mkdir(path, mode, apply);
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if (r < 0 && (errno != EEXIST || is_dir(path) <= 0))
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return -errno;
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return 0;
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}
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int mkdir_p(const char *path, mode_t mode) {
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return makedir_p(path, mode, false);
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}
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int mkdir_p_label(const char *path, mode_t mode) {
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return makedir_p(path, mode, true);
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}
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