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/stdio/tmpnam.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/stdio/tmpnam.c

(limited to 'src/stdio/tmpnam.c')

diff --git a/src/stdio/tmpnam.c b/src/stdio/tmpnam.c
new file mode 100644
index 0000000..71dc8bb
--- /dev/null
+++ b/src/stdio/tmpnam.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <stdlib.h>
+#include "syscall.h"
+
+#define MAXTRIES 100
+
+char *tmpnam(char *buf)
+{
+	static char internal[L_tmpnam];
+	char s[] = "/tmp/tmpnam_XXXXXX";
+	int try;
+	int r;
+	for (try=0; try<MAXTRIES; try++) {
+		__randname(s+12);
+#ifdef SYS_readlink
+		r = __syscall(SYS_readlink, s, (char[1]){0}, 1);
+#else
+		r = __syscall(SYS_readlinkat, AT_FDCWD, s, (char[1]){0}, 1);
+#endif
+		if (r == -ENOENT) return strcpy(buf ? buf : internal, s);
+	}
+	return 0;
+}
-- 
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