1 files changed, 55 insertions, 0 deletions

diff --git a/busybox/coreutils/logname.c b/busybox/coreutils/logname.c
new file mode 100644
index 000000000..ca5eb41cf
--- /dev/null
+++ b/busybox/coreutils/logname.c
@@ -0,0 +1,55 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini logname implementation for busybox
+ *
+ * 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
+ *
+ */
+
+/* BB_AUDIT SUSv3 compliant */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/logname.html */
+
+/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
+ *
+ * SUSv3 specifies the string used is that returned from getlogin().
+ * The previous implementation used getpwuid() for geteuid(), which
+ * is _not_ the same.  Erik apparently made this change almost 3 years
+ * ago to avoid failing when no utmp was available.  However, the
+ * correct course of action wrt SUSv3 for a failing getlogin() is
+ * a diagnostic message and an error return.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "busybox.h"
+
+extern int logname_main(int argc, char **argv)
+{
+        const char *p;
+
+        if (argc > 1) {
+                bb_show_usage();
+        }
+
+        if ((p = getlogin()) != NULL) {
+                puts(p);
+                bb_fflush_stdout_and_exit(EXIT_SUCCESS);
+        }
+
+        bb_perror_msg_and_die("getlogin");
+}