1 files changed, 22 insertions, 0 deletions
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;
+}