69112cca60
getlogin_r is specified by POSIX to to take a size_t len, not int. Fix our version to do the same, bump the symbol version due to ABI change and provide compat. This was reported to break compilation of Ruby 2.8. Some discussion about the necessity of the ABI compat did take place in the review. While many 64-bit platforms would likely be passing it in a 64-bit register and zero-extended and thus, not notice ABI breakage, some do sign-extend (e.g. mips). PR: 247102 Submitted by: Bertram Scharpf <software@bertram-scharpf.de> (original) Submitted by: cem (ABI compat) MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D26335
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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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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* 3. Neither the name of the University nor the names of its contributors
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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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#include <sys/cdefs.h>
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__SCCSID("@(#)getlogin.c 8.1 (Berkeley) 6/4/93");
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <errno.h>
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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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#include "namespace.h"
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#include <pthread.h>
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#include "un-namespace.h"
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#include "libc_private.h"
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extern int _getlogin(char *, int);
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char *
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getlogin(void)
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{
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static char logname[MAXLOGNAME];
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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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}
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int
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getlogin_r(char *logname, size_t namelen)
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{
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char tmpname[MAXLOGNAME];
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int len;
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if (namelen < 1)
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return (ERANGE);
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logname[0] = '\0';
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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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}
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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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