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/* 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 dianostic 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"); } |