source: MondoRescue/branches/stable/mindi-busybox/coreutils/logname.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 1.1 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini logname implementation for busybox
4 *
5 * Copyright (C) 2000  Edward Betts <edward@debian.org>.
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10/* BB_AUDIT SUSv3 compliant */
11/* http://www.opengroup.org/onlinepubs/007904975/utilities/logname.html */
12
13/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
14 *
15 * SUSv3 specifies the string used is that returned from getlogin().
16 * The previous implementation used getpwuid() for geteuid(), which
17 * is _not_ the same.  Erik apparently made this change almost 3 years
18 * ago to avoid failing when no utmp was available.  However, the
19 * correct course of action wrt SUSv3 for a failing getlogin() is
20 * a diagnostic message and an error return.
21 */
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <unistd.h>
26#include "busybox.h"
27
28int logname_main(int argc, char ATTRIBUTE_UNUSED **argv)
29{
30    const char *p;
31
32    if (argc > 1) {
33        bb_show_usage();
34    }
35
36    if ((p = getlogin()) != NULL) {
37        puts(p);
38        bb_fflush_stdout_and_exit(EXIT_SUCCESS);
39    }
40
41    bb_perror_msg_and_die("getlogin");
42}
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