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/* vi: set sw=4 ts=4: */
/*
* Mini whoami 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
*
*/
#include "internal.h"
#include <stdio.h>
#include <pwd.h>
static const char whoami_usage[] = "whoami\n\n"
"Print the user name associated with the current effective user id.\n"
"Same as id -un.\n";
extern int whoami_main(int argc, char **argv)
{
struct passwd *pw;
uid_t uid;
if (argc > 1)
usage(whoami_usage);
uid = geteuid();
pw = getpwuid(uid);
if (pw) {
puts(pw->pw_name);
exit(TRUE);
}
fprintf(stderr, "%s: cannot find username for UID %u\n", argv[0],
(unsigned) uid);
exit(FALSE);
}
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