$NetBSD: patch-bv,v 1.1 2005/11/14 08:05:28 jlam Exp $

--- lib/util_pw.c.orig	2005-10-12 13:03:30.000000000 -0400
+++ lib/util_pw.c
@@ -4,6 +4,7 @@
    Safe versions of getpw* calls
 
    Copyright (C) Andrew Bartlett 2002
+   Copyright (C) Luke Mewburn 2004
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -144,3 +145,38 @@ struct passwd *getpwuid_alloc(uid_t uid)
 
 	return alloc_copy_passwd(temp);
 }
+
+
+/****************************************************************
+ Expand any `&' characters in pw_gecos with a capitalized pw_name.
+****************************************************************/
+
+char *passwd_expand_gecos(const struct passwd *pw)
+{
+	char	*p, *bp, *buf;
+	size_t	 ac, buflen;
+
+	if (!lp_passwd_expand_gecos()) {
+		return smb_xstrdup(pw->pw_gecos);
+	}
+
+	ac = 0;
+					/* count number of `&' in pw_gecos */
+	for (p = pw->pw_gecos; *p; p++) {
+		if (*p == '&')
+			ac++;
+	}
+	buflen = strlen(pw->pw_gecos) + (ac * (strlen(pw->pw_name) - 1)) + 1;
+	buf = smb_xmalloc_array(sizeof(char), buflen);
+	bp = buf;
+	for (p = pw->pw_gecos; *p; p++) {
+		if (*p == '&') {	/* replace & with capitalized pw_name */
+			ac = snprintf(bp, buflen - (bp - buf),
+				"%s", pw->pw_name);
+			*bp = toupper((unsigned char)*bp);
+			bp += ac;
+		} else
+			*bp++ = *p;
+	}
+	return buf;
+}