18a16b7a1SPedro F. Giffuni /*- 28a16b7a1SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 38a16b7a1SPedro F. Giffuni * 458f0484fSRodney W. Grimes * Copyright (c) 1988, 1993 558f0484fSRodney W. Grimes * The Regents of the University of California. All rights reserved. 658f0484fSRodney W. Grimes * 758f0484fSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 858f0484fSRodney W. Grimes * modification, are permitted provided that the following conditions 958f0484fSRodney W. Grimes * are met: 1058f0484fSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 1158f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 1258f0484fSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 1358f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 1458f0484fSRodney W. Grimes * documentation and/or other materials provided with the distribution. 15fbbd9655SWarner Losh * 3. Neither the name of the University nor the names of its contributors 1658f0484fSRodney W. Grimes * may be used to endorse or promote products derived from this software 1758f0484fSRodney W. Grimes * without specific prior written permission. 1858f0484fSRodney W. Grimes * 1958f0484fSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2058f0484fSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2158f0484fSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2258f0484fSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2358f0484fSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2458f0484fSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2558f0484fSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2658f0484fSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2758f0484fSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2858f0484fSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2958f0484fSRodney W. Grimes * SUCH DAMAGE. 3058f0484fSRodney W. Grimes */ 3158f0484fSRodney W. Grimes 32ea8d448aSDavid E. O'Brien #include <sys/cdefs.h> 33c1920558SJohn Baldwin __SCCSID("@(#)getlogin.c 8.1 (Berkeley) 6/4/93"); 34ea8d448aSDavid E. O'Brien __FBSDID("$FreeBSD$"); 3558f0484fSRodney W. Grimes 3658f0484fSRodney W. Grimes #include <sys/param.h> 37fc1d3c6dSDaniel Eischen #include <errno.h> 3858f0484fSRodney W. Grimes #include <pwd.h> 3958f0484fSRodney W. Grimes #include <stdio.h> 4058f0484fSRodney W. Grimes #include <string.h> 4158f0484fSRodney W. Grimes #include <unistd.h> 42d201fe46SDaniel Eischen #include "namespace.h" 43d201fe46SDaniel Eischen #include <pthread.h> 44d201fe46SDaniel Eischen #include "un-namespace.h" 4558f0484fSRodney W. Grimes 464cd01193SMark Murray #include "libc_private.h" 47fc1d3c6dSDaniel Eischen 48d201fe46SDaniel Eischen extern int _getlogin(char *, int); 49fc1d3c6dSDaniel Eischen 508166f7fdSWes Peters char * 51fc1d3c6dSDaniel Eischen getlogin(void) 52fc1d3c6dSDaniel Eischen { 53047a2ef6SBrooks Davis static char logname[MAXLOGNAME]; 54fc1d3c6dSDaniel Eischen 55047a2ef6SBrooks Davis if (_getlogin(logname, sizeof(logname)) < 0) 56047a2ef6SBrooks Davis return (NULL); 57047a2ef6SBrooks Davis return (logname[0] != '\0' ? logname : NULL); 58fc1d3c6dSDaniel Eischen } 59fc1d3c6dSDaniel Eischen 60fc1d3c6dSDaniel Eischen int 6169112ccaSKyle Evans getlogin_r(char *logname, size_t namelen) 628166f7fdSWes Peters { 63047a2ef6SBrooks Davis char tmpname[MAXLOGNAME]; 64fc1d3c6dSDaniel Eischen int len; 65fc1d3c6dSDaniel Eischen 66eef9f6d2SMarcel Moolenaar if (namelen < 1) 67eef9f6d2SMarcel Moolenaar return (ERANGE); 68eef9f6d2SMarcel Moolenaar logname[0] = '\0'; 69eef9f6d2SMarcel Moolenaar 70047a2ef6SBrooks Davis if (_getlogin(tmpname, sizeof(tmpname)) < 0) 71047a2ef6SBrooks Davis return (errno); 72047a2ef6SBrooks Davis len = strlen(tmpname) + 1; 73eef9f6d2SMarcel Moolenaar if (len > namelen) 74047a2ef6SBrooks Davis return (ERANGE); 75047a2ef6SBrooks Davis strlcpy(logname, tmpname, len); 76047a2ef6SBrooks Davis return (0); 778166f7fdSWes Peters } 7869112ccaSKyle Evans 7969112ccaSKyle Evans /* FreeBSD 12 and earlier compat. */ 8069112ccaSKyle Evans int 8169112ccaSKyle Evans __getlogin_r_fbsd12(char *logname, int namelen) 8269112ccaSKyle Evans { 8369112ccaSKyle Evans if (namelen < 1) 8469112ccaSKyle Evans return (ERANGE); 8569112ccaSKyle Evans return (getlogin_r(logname, namelen)); 8669112ccaSKyle Evans } 8769112ccaSKyle Evans __sym_compat(getlogin_r, __getlogin_r_fbsd12, FBSD_1.0); 88