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1 files changed, 30 insertions, 0 deletions

diff --git a/lib/util.c b/lib/util.c
new file mode 100644
index 0000000..6cfcf1f
--- /dev/null
+++ b/lib/util.c
@@ -0,0 +1,30 @@
+#include "log.h"
+#include "util.h"
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <string.h>
+
+/* will clobber path */
+int vl_mkdir_parents(int fd, char *path, mode_t mode)
+{
+  int last = 0;
+
+  char *ch = path;
+  do {
+    if (*ch == '/' || (*ch == '\0' && (last = 1))) {
+      /* last is set to 1 iff *ch == '\0' */
+      *ch = '\0';
+
+      if (mkdirat(fd, path, mode) < 0 && errno != EEXIST) {
+        vl_debug("Failed to create directory %s: %s", path, strerror(errno));
+        return -1;
+      }
+
+      if (!last) *ch = '/';
+    }
+  } while (*(ch++));
+
+  return 0;
+}