pw/grupd.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (C) 1996
   5  *      David L. Nugent.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #ifndef lint
  30 static const char rcsid[] =
  31   "$FreeBSD$";
  32 #endif /* not lint */
  33
  34 #include <err.h>
  35 #include <grp.h>
  36 #include <libutil.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <unistd.h>
  40
  41 #include "pwupd.h"
  42
  43 char *
  44 getgrpath(const char * file)
  45 {
  46         static char pathbuf[MAXPATHLEN];
  47
  48         snprintf(pathbuf, sizeof pathbuf, "%s/%s", conf.etcpath, file);
  49
  50         return (pathbuf);
  51 }
  52
  53 static int
  54 gr_update(struct group * grp, char const * group)
  55 {
  56         int pfd, tfd;
  57         struct group *gr = NULL;
  58         struct group *old_gr = NULL;
  59
  60         if (grp != NULL)
  61                 gr = gr_dup(grp);
  62
  63         if (group != NULL)
  64                 old_gr = GETGRNAM(group);
  65
  66         if (gr_init(conf.etcpath, NULL))
  67                 err(1, "gr_init()");
  68
  69         if ((pfd = gr_lock()) == -1) {
  70                 gr_fini();
  71                 err(1, "gr_lock()");
  72         }
  73         if ((tfd = gr_tmp(-1)) == -1) {
  74                 gr_fini();
  75                 err(1, "gr_tmp()");
  76         }
  77         if (gr_copy(pfd, tfd, gr, old_gr) == -1) {
  78                 gr_fini();
  79                 close(tfd);
  80                 err(1, "gr_copy()");
  81         }
  82         fsync(tfd);
  83         close(tfd);
  84         if (gr_mkdb() == -1) {
  85                 gr_fini();
  86                 err(1, "gr_mkdb()");
  87         }
  88         free(gr);
  89         gr_fini();
  90         return 0;
  91 }
  92
  93
  94 int
  95 addgrent(struct group * grp)
  96 {
  97         return gr_update(grp, NULL);
  98 }
  99
 100 int
 101 chggrent(char const * login, struct group * grp)
 102 {
 103         return gr_update(grp, login);
 104 }
 105
 106 int
 107 delgrent(struct group * grp)
 108 {
 109
 110         return (gr_update(NULL, grp->gr_name));
 111 }