usr/src/cmd/oamuser/lib/putgrent.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  27 /*        All Rights Reserved   */
  28
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <stdio.h>
  33 #include <grp.h>
  34 #include <unistd.h>
  35
  36 /*
  37  * putgrent()   function to write a group structure to a file
  38  *              supports the use of group names that with + or -
  39  */
  40 void
  41 putgrent(struct group *grpstr, FILE *to)
  42 {
  43         char **memptr;          /* member vector pointer */
  44
  45         if (grpstr->gr_name[0] == '+' || grpstr->gr_name[0] == '-') {
  46                 /*
  47                  * if the groupname starts with either a '+' or '-' then
  48                  * write out what we can as best as we can
  49                  * we assume that fgetgrent() set gr_gid to 0 so
  50                  * write a null entry instead of 0
  51                  * This should not break /etc/nsswitch.conf for any of
  52                  * "group: compat", "group: files", "group: nis"
  53                  *
  54                  */
  55                 (void) fprintf(to, "%s:%s:", grpstr->gr_name,
  56                         grpstr->gr_passwd != NULL ? grpstr->gr_passwd : "");
  57
  58                 if (grpstr->gr_gid == 0) {
  59                         (void) fprintf(to, ":");
  60                 } else {
  61                         (void) fprintf(to, "%ld:", grpstr->gr_gid);
  62                 }
  63
  64                 memptr = grpstr->gr_mem;
  65
  66                 while (memptr != NULL && *memptr != NULL) {
  67                         (void) fprintf(to, "%s", *memptr);
  68                         memptr++;
  69                         if (memptr != NULL && *memptr != NULL)
  70                                 (void) fprintf(to, ",");
  71                 }
  72
  73                 (void) fprintf(to, "\n");
  74         } else {
  75                 /*
  76                  * otherwise write out all the fields in the group structure
  77                  *
  78                  */
  79                 (void) fprintf(to, "%s:%s:%ld:", grpstr->gr_name,
  80                         grpstr->gr_passwd, grpstr->gr_gid);
  81
  82                 memptr = grpstr->gr_mem;
  83
  84                 while (*memptr != NULL) {
  85                         (void) fprintf(to, "%s", *memptr);
  86                         memptr++;
  87                         if (*memptr != NULL)
  88                                 (void) fprintf(to, ",");
  89                 }
  90
  91                 (void) fprintf(to, "\n");
  92         }
  93 }