util/logout.c

   1 /*
   2  * Copyright (c) 1999, 2005, 2010 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1988, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  */
  55
  56 #include <sys/types.h>
  57 #include <sys/time.h>
  58
  59 #ifdef UTMP_COMPAT
  60 #include <utmp.h>
  61 #endif /* UTMP_COMPAT */
  62 #include <utmpx.h>
  63 #include <utmpx-darwin.h>
  64 #include <unistd.h>
  65 #include <string.h>
  66
  67 #pragma clang diagnostic push
  68 #pragma clang diagnostic ignored "-Wconstant-conversion"
  69
  70 int
  71 logout(char *line)
  72 {
  73         struct utmpx *ux, utx;
  74 #ifdef UTMP_COMPAT
  75 #ifdef __LP64__
  76         struct utmp32 u;
  77 #else /* __LP64__ */
  78         struct utmp u;
  79 #endif /* __LP64__ */
  80         int which;
  81 #endif /* UTMP_COMPAT */
  82
  83         struct _utmpx *def_utx = __default_utx();
  84
  85         bzero(&utx, sizeof(utx));
  86         strncpy(utx.ut_line, line, sizeof(utx.ut_line));
  87         utx.ut_type = UTMPX_AUTOFILL_MASK | UTMPX_DEAD_IF_CORRESPONDING_MASK | DEAD_PROCESS;
  88         (void)gettimeofday(&utx.ut_tv, NULL);
  89         UTMPX_LOCK(def_utx);
  90         __setutxent(def_utx);
  91         ux = __pututxline(def_utx, &utx);
  92         __endutxent(def_utx);
  93         if (!ux) {
  94                 UTMPX_UNLOCK(def_utx);
  95                 return 0;
  96         }
  97 #ifdef UTMP_COMPAT
  98         if (__utx__.utfile_system) { /* only if we are using _PATH_UTMPX */
  99                 which = _utmp_compat(ux, &u);
 100                 if (which & UTMP_COMPAT_UTMP0)
 101                         _write_utmp(&u, 0);
 102                 else if (which & UTMP_COMPAT_UTMP1)
 103                         _write_utmp(&u, 1);
 104         }
 105 #endif /* UTMP_COMPAT */
 106         UTMPX_UNLOCK(def_utx);
 107         return 1;
 108 }
 109 #pragma clang diagnostic pop