more thorough fix for systems with strange socklen_t

[oweals/busybox.git] / coreutils / logname.c

diff --git a/coreutils/logname.c b/coreutils/logname.c
index ca5eb41cfa9b212f145c93b847317cf148b7bb39..8357b9a3364ffb14a972eaca6b963a958d1e7752 100644 (file)
--- a/coreutils/logname.c
+++ b/coreutils/logname.c
@@ -4,20 +4,7 @@
  *
  * Copyright (C) 2000  Edward Betts <edward@debian.org>.
  *
- * 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
 /* BB_AUDIT SUSv3 compliant */
@@ -33,22 +20,23 @@
  * a diagnostic message and an error return.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "busybox.h"
+#include "libbb.h"
+
+/* This is a NOFORK applet. Be very careful! */
 
-extern int logname_main(int argc, char **argv)
+int logname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int logname_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 {
-       const char *p;
+       char buf[64];
 
-       if (argc > 1) {
+       if (argv[1]) {
                bb_show_usage();
        }
 
-       if ((p = getlogin()) != NULL) {
-               puts(p);
-               bb_fflush_stdout_and_exit(EXIT_SUCCESS);
+       /* Using _r function - avoid pulling in static buffer from libc */
+       if (getlogin_r(buf, sizeof(buf)) == 0) {
+               puts(buf);
+               return fflush_all();
        }
 
        bb_perror_msg_and_die("getlogin");