1 files changed, 29 insertions, 0 deletions
diff --git a/src/temp/mktemp.c b/src/temp/mktemp.c
new file mode 100644
index 0000000..8638e08
--- /dev/null
+++ b/src/temp/mktemp.c
@@ -0,0 +1,29 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include "libc.h"
+
+char *mktemp(char *template)
+{
+	static int lock;
+	static int index;
+	int l = strlen(template);
+
+	if (l < 6 || strcmp(template+l-6, "XXXXXX")) {
+		errno = EINVAL;
+		return NULL;
+	}
+	LOCK(&lock);
+	for (; index < 1000000; index++) {
+		snprintf(template+l-6, 6, "%06d", index);
+		if (access(template, F_OK) != 0) {
+			UNLOCK(&lock);
+			return template;
+		}
+	}
+	UNLOCK(&lock);
+	return NULL;	
+}