1 files changed, 47 insertions, 0 deletions
diff --git a/src/libdnssec/shared/fs.c b/src/libdnssec/shared/fs.c
new file mode 100644
index 0000000..10c25d9
--- /dev/null
+++ b/src/libdnssec/shared/fs.c
@@ -0,0 +1,47 @@
+/*  Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    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 <assert.h>
+#include <stdbool.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "libdnssec/error.h"
+
+int fs_mkdir(const char *path, mode_t mode, bool ignore_existing)
+{
+	if (mkdir(path, mode) == 0) {
+		return DNSSEC_EOK;
+	}
+
+	if (!ignore_existing || errno != EEXIST) {
+		return dnssec_errno_to_error(errno);
+	}
+
+	assert(errno == EEXIST);
+
+	struct stat st = { 0 };
+	if (stat(path, &st) != 0) {
+		return dnssec_errno_to_error(errno);
+	}
+
+	if (!S_ISDIR(st.st_mode)) {
+		return dnssec_errno_to_error(ENOTDIR);
+	}
+
+	return DNSSEC_EOK;
+}