pw/grupd.c

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