2017-11-20 19:49:47 +00:00
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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1994-05-27 05:00:24 +00:00
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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2017-02-28 23:42:47 +00:00
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* 3. Neither the name of the University nor the names of its contributors
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1994-05-27 05:00:24 +00:00
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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2002-02-01 00:57:29 +00:00
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#include <sys/cdefs.h>
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2018-07-03 17:31:45 +00:00
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__SCCSID("@(#)getlogin.c 8.1 (Berkeley) 6/4/93");
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2002-02-01 00:57:29 +00:00
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__FBSDID("$FreeBSD$");
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1994-05-27 05:00:24 +00:00
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#include <sys/param.h>
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2001-01-01 13:29:19 +00:00
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#include <errno.h>
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1994-05-27 05:00:24 +00:00
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#include <pwd.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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2001-01-24 13:01:12 +00:00
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#include "namespace.h"
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#include <pthread.h>
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#include "un-namespace.h"
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1994-05-27 05:00:24 +00:00
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2002-03-29 22:43:43 +00:00
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#include "libc_private.h"
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1994-05-27 05:00:24 +00:00
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2001-01-24 13:01:12 +00:00
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extern int _getlogin(char *, int);
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2001-01-01 13:29:19 +00:00
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1999-11-28 22:41:38 +00:00
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char *
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2001-01-01 13:29:19 +00:00
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getlogin(void)
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{
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2018-04-06 17:17:34 +00:00
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static char logname[MAXLOGNAME];
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2001-01-01 13:29:19 +00:00
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2018-04-06 17:17:34 +00:00
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if (_getlogin(logname, sizeof(logname)) < 0)
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return (NULL);
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return (logname[0] != '\0' ? logname : NULL);
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2001-01-01 13:29:19 +00:00
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}
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int
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2020-09-09 18:07:13 +00:00
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getlogin_r(char *logname, size_t namelen)
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1999-11-28 22:41:38 +00:00
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{
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2018-04-06 17:17:34 +00:00
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char tmpname[MAXLOGNAME];
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2001-01-01 13:29:19 +00:00
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int len;
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2014-04-05 18:14:58 +00:00
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if (namelen < 1)
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return (ERANGE);
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logname[0] = '\0';
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2018-04-06 17:17:34 +00:00
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if (_getlogin(tmpname, sizeof(tmpname)) < 0)
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return (errno);
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len = strlen(tmpname) + 1;
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if (len > namelen)
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return (ERANGE);
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strlcpy(logname, tmpname, len);
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return (0);
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1999-11-28 22:41:38 +00:00
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}
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2020-09-09 18:07:13 +00:00
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/* FreeBSD 12 and earlier compat. */
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int
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__getlogin_r_fbsd12(char *logname, int namelen)
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{
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if (namelen < 1)
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return (ERANGE);
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return (getlogin_r(logname, namelen));
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}
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__sym_compat(getlogin_r, __getlogin_r_fbsd12, FBSD_1.0);
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