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authorAnthony G. Basile <blueness@gentoo.org>2012-11-16 22:22:07 -0500
committerAnthony G. Basile <blueness@gentoo.org>2012-11-16 22:22:07 -0500
commitdbc4814264667d2ebf2f7300a4028461fdf532bd (patch)
treec8f4a0219a73bd22f3e6996e7652ef5b3f389f2f /src/udev/mkdir.c
parentd626c1395bb217bd154ec9131038222295ca3eb0 (diff)
src/udev: restore needed deps from src/share
Diffstat (limited to 'src/udev/mkdir.c')
-rw-r--r--src/udev/mkdir.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/udev/mkdir.c b/src/udev/mkdir.c
new file mode 100644
index 0000000000..0e51b64f69
--- /dev/null
+++ b/src/udev/mkdir.c
@@ -0,0 +1,147 @@
+/*-*- 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 <assert.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "mkdir.h"
+#include "label.h"
+#include "util.h"
+
+int mkdir_label(const char *path, mode_t mode) {
+ return label_mkdir(path, mode, true);
+}
+
+static int makedir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid, bool apply) {
+ struct stat st;
+
+ if (label_mkdir(path, mode, apply) >= 0)
+ if (chmod_and_chown(path, mode, uid, gid) < 0)
+ return -errno;
+
+ if (lstat(path, &st) < 0)
+ return -errno;
+
+ if ((st.st_mode & 0777) != mode ||
+ st.st_uid != uid ||
+ st.st_gid != gid ||
+ !S_ISDIR(st.st_mode)) {
+ errno = EEXIST;
+ return -errno;
+ }
+
+ return 0;
+}
+
+int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid) {
+ return makedir_safe(path, mode, uid, gid, false);
+}
+
+int mkdir_safe_label(const char *path, mode_t mode, uid_t uid, gid_t gid) {
+ return makedir_safe(path, mode, uid, gid, true);
+}
+
+static int makedir_parents(const char *path, mode_t mode, bool apply) {
+ struct stat st;
+ const char *p, *e;
+
+ assert(path);
+
+ /* return immediately if directory exists */
+ e = strrchr(path, '/');
+ if (!e)
+ return -EINVAL;
+ p = strndupa(path, e - path);
+ if (stat(p, &st) >= 0) {
+ if ((st.st_mode & S_IFMT) == S_IFDIR)
+ return 0;
+ else
+ return -ENOTDIR;
+ }
+
+ /* create every parent directory in the path, except the last component */
+ p = path + strspn(path, "/");
+ for (;;) {
+ int r;
+ char *t;
+
+ e = p + strcspn(p, "/");
+ p = e + strspn(e, "/");
+
+ /* Is this the last component? If so, then we're
+ * done */
+ if (*p == 0)
+ return 0;
+
+ t = strndup(path, e - path);
+ if (!t)
+ return -ENOMEM;
+
+ r = label_mkdir(t, mode, apply);
+ free(t);
+
+ if (r < 0 && errno != EEXIST)
+ return -errno;
+ }
+}
+
+int mkdir_parents(const char *path, mode_t mode) {
+ return makedir_parents(path, mode, false);
+}
+
+int mkdir_parents_label(const char *path, mode_t mode) {
+ return makedir_parents(path, mode, true);
+}
+
+static int is_dir(const char* path) {
+ struct stat st;
+ if (stat(path, &st) < 0)
+ return -errno;
+ return S_ISDIR(st.st_mode);
+}
+
+static int makedir_p(const char *path, mode_t mode, bool apply) {
+ int r;
+
+ /* Like mkdir -p */
+
+ r = makedir_parents(path, mode, apply);
+ if (r < 0)
+ return r;
+
+ r = label_mkdir(path, mode, apply);
+ if (r < 0 && (errno != EEXIST || is_dir(path) <= 0))
+ return -errno;
+
+ return 0;
+}
+
+int mkdir_p(const char *path, mode_t mode) {
+ return makedir_p(path, mode, false);
+}
+
+int mkdir_p_label(const char *path, mode_t mode) {
+ return makedir_p(path, mode, true);
+}