1 /* vi: set sw=4 ts=4: */
3 * Mini logname implementation for busybox
5 * Copyright (C) 2000 Edward Betts <edward@debian.org>.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 /* BB_AUDIT SUSv3 compliant */
24 /* http://www.opengroup.org/onlinepubs/007904975/utilities/logname.html */
26 /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
28 * SUSv3 specifies the string used is that returned from getlogin().
29 * The previous implementation used getpwuid() for geteuid(), which
30 * is _not_ the same. Erik apparently made this change almost 3 years
31 * ago to avoid failing when no utmp was available. However, the
32 * correct course of action wrt SUSv3 for a failing getlogin() is
33 * a dianostic message and an error return.
41 extern int logname_main(int argc, char **argv)
49 if ((p = getlogin()) != NULL) {
51 bb_fflush_stdout_and_exit(EXIT_SUCCESS);
54 bb_perror_msg_and_die("getlogin");