gpo: move mkdir_p to lib/util

Move the mkdir_p function to lib/util so it can be used elsewhere

Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

3 files changed, 92 insertions, 1 deletions

diff --git a/lib/util/mkdir_p.c b/lib/util/mkdir_p.c
new file mode 100644
index 00000000000..290a1f39520
--- /dev/null
+++ b/lib/util/mkdir_p.c
@@ -0,0 +1,70 @@
+/*
+   mkdir -p
+
+   Copyright (C) Amitay Isaacs  2014
+   Copyright (C) Martin Schwenke  2014
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+#include "replace.h"
+#include <sys/stat.h>
+#include <libgen.h>
+#include "mkdir_p.h"
+
+int mkdir_p(const char *dir, int mode)
+{
+	char t[PATH_MAX];
+	ssize_t len;
+	int ret;
+
+	if (strcmp(dir, "/") == 0) {
+		return 0;
+	}
+
+	if (strcmp(dir, ".") == 0) {
+		return 0;
+	}
+
+	/* Try to create directory */
+	ret = mkdir(dir, mode);
+	/* Succeed if that worked or if it already existed */
+	if (ret == 0 || errno == EEXIST) {
+		return 0;
+	}
+	/* Fail on anything else except ENOENT */
+	if (errno != ENOENT) {
+		return ret;
+	}
+
+	/* Create ancestors */
+	len = strlen(dir);
+	if (len >= PATH_MAX) {
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+	strncpy(t, dir, len+1);
+
+	ret = mkdir_p(dirname(t), mode);
+	if (ret != 0) {
+		return ret;
+	}
+
+	/* Create directory */
+	ret = mkdir(dir, mode);
+	if ((ret == -1) && (errno == EEXIST)) {
+		ret = 0;
+	}
+
+	return ret;
+}
diff --git a/lib/util/mkdir_p.h b/lib/util/mkdir_p.h
new file mode 100644
index 00000000000..9281de8cb91
--- /dev/null
+++ b/lib/util/mkdir_p.h
@@ -0,0 +1,21 @@
+/*
+   mkdir -p
+
+   Copyright (C) Amitay Isaacs  2014
+   Copyright (C) Martin Schwenke  2014
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+int mkdir_p(const char *dir, int mode);
diff --git a/lib/util/wscript_build b/lib/util/wscript_build
index bb3cdd134ad..0b16b6f8216 100644
--- a/lib/util/wscript_build
+++ b/lib/util/wscript_build
@@ -72,7 +72,7 @@ bld.SAMBA_SUBSYSTEM('samba-util-core',
                               signal.c util.c idtree.c fault.c
                               substitute.c util_process.c util_strlist.c
                               strv_util.c bitmap.c select.c pidfile.c
-                              become_daemon.c ''',
+                              become_daemon.c mkdir_p.c''',
                     deps='''time-basic samba-debug socket-blocking talloc
                             tevent execinfo pthread strv''',
                     local_include=False)