From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/temp/mktemp.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 src/temp/mktemp.c

(limited to 'src/temp/mktemp.c')

diff --git a/src/temp/mktemp.c b/src/temp/mktemp.c
new file mode 100644
index 0000000..7b3d264
--- /dev/null
+++ b/src/temp/mktemp.c
@@ -0,0 +1,30 @@
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+char *mktemp(char *template)
+{
+	size_t l = strlen(template);
+	int retries = 100;
+	struct stat st;
+
+	if (l < 6 || memcmp(template+l-6, "XXXXXX", 6)) {
+		errno = EINVAL;
+		*template = 0;
+		return template;
+	}
+
+	do {
+		__randname(template+l-6);
+		if (stat(template, &st)) {
+			if (errno != ENOENT) *template = 0;
+			return template;
+		}
+	} while (--retries);
+
+	*template = 0;
+	errno = EEXIST;
+	return template;
+}
-- 
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