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/legacy/cuserid.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 src/legacy/cuserid.c

(limited to 'src/legacy/cuserid.c')

diff --git a/src/legacy/cuserid.c b/src/legacy/cuserid.c
new file mode 100644
index 0000000..dcaf73d
--- /dev/null
+++ b/src/legacy/cuserid.c
@@ -0,0 +1,22 @@
+#define _GNU_SOURCE
+#include <pwd.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+
+char *cuserid(char *buf)
+{
+	static char usridbuf[L_cuserid];
+	struct passwd pw, *ppw;
+	long pwb[256];
+	if (buf) *buf = 0;
+	getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw);
+	if (!ppw)
+		return buf;
+	size_t len = strnlen(pw.pw_name, L_cuserid);
+	if (len == L_cuserid)
+		return buf;
+	if (!buf) buf = usridbuf;
+	memcpy(buf, pw.pw_name, len+1);
+	return buf;
+}
-- 
cgit v1.2.3