This patch contains changes to NetBSD libc code base to make it compile and work on Minix. Some of them are due to actual NetBSD libc bugs, as we're compiling it in non-reentrant mode and with a.out support, something not exactly frequent in NetBSD. Others are proper fixes to port it to Minix (mostly sa_len parameter missing in socket and a few mmap from files).
150 lines
4.6 KiB
C
150 lines
4.6 KiB
C
/* $NetBSD: getlogin.c,v 1.15 2009/01/11 02:46:27 christos Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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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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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)getlogin.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: getlogin.c,v 1.15 2009/01/11 02:46:27 christos Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <sys/param.h>
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#include <pwd.h>
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#include <utmp.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 <errno.h>
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#include "reentrant.h"
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#include "extern.h"
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#ifdef __weak_alias
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__weak_alias(getlogin,_getlogin)
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__weak_alias(getlogin_r,_getlogin_r)
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#ifndef __minix
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__weak_alias(setlogin,_setlogin)
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#endif /* !__minix */
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#endif
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int __logname_valid; /* known to setlogin() */
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static char logname[MAXLOGNAME + 1];
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#ifdef _REENTRANT
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static mutex_t logname_mutex = MUTEX_INITIALIZER;
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#endif
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char *
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getlogin(void)
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{
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char *rv;
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mutex_lock(&logname_mutex);
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if (__logname_valid == 0) {
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if (__getlogin(logname, sizeof(logname) - 1) < 0) {
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mutex_unlock(&logname_mutex);
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return ((char *)NULL);
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}
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__logname_valid = 1;
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}
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rv = (*logname ? logname : (char *)NULL);
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mutex_unlock(&logname_mutex);
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return rv;
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}
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int
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getlogin_r(char *name, size_t namelen)
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{
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size_t len;
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int rv;
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mutex_lock(&logname_mutex);
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if (__logname_valid == 0) {
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if (__getlogin(logname, sizeof(logname) - 1) < 0) {
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rv = errno;
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mutex_unlock(&logname_mutex);
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return (rv);
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}
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__logname_valid = 1;
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}
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len = strlen(logname) + 1;
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if (len > namelen) {
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rv = ERANGE;
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} else {
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strncpy(name, logname, len);
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rv = 0;
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}
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mutex_unlock(&logname_mutex);
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return (rv);
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}
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#ifndef __minix
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int
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setlogin(const char *name)
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{
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int retval;
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retval = __setlogin(name);
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__logname_valid = 0;
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return (retval);
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}
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#endif
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