usr/src/cmd/oamuser/group/groupmod.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 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 #include <sys/types.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <ctype.h>
  37 #include <limits.h>
  38 #include <userdefs.h>
  39 #include <users.h>
  40 #include <errno.h>
  41 #include "messages.h"
  42
  43 /*
  44  *  groupmod -g gid [-o] | -n name group
  45  *
  46  *      This command modifies groups on the system.  Arguments are:
  47  *
  48  *      gid - a gid_t less than UID_MAX
  49  *      name - a string of printable characters excluding colon (:) and less
  50  *              than MAXGLEN characters long.
  51  *      group - a string of printable characters excluding colon(:) and less
  52  *              than MAXGLEN characters long.
  53  */
  54
  55 extern int valid_gid(), mod_group();
  56 extern void errmsg();
  57
  58 char *cmdname = "groupmod";
  59
  60 int
  61 main(int argc, char *argv[])
  62 {
  63         int ch;                         /* return from getopt */
  64         gid_t gid;                      /* group id */
  65         int oflag = 0;                  /* flags */
  66         int valret;                     /* return from valid_gid() */
  67         char *gidstr = NULL;            /* gid from command line */
  68         char *newname = NULL;           /* new group name with -n option */
  69         char *grpname;                  /* group name from command line */
  70         int warning;
  71
  72         oflag = 0;      /* flags */
  73
  74         while ((ch = getopt(argc, argv, "g:on:")) != EOF)  {
  75                 switch (ch) {
  76                         case 'g':
  77                                 gidstr = optarg;
  78                                 break;
  79                         case 'o':
  80                                 oflag++;
  81                                 break;
  82                         case 'n':
  83                                 newname = optarg;
  84                                 break;
  85                         case '?':
  86                                 errmsg(M_MUSAGE);
  87                                 exit(EX_SYNTAX);
  88                 }
  89         }
  90
  91         if ((oflag && !gidstr) || optind != argc - 1) {
  92                 errmsg(M_MUSAGE);
  93                 exit(EX_SYNTAX);
  94         }
  95
  96         grpname = argv[optind];
  97
  98         if (gidstr) {
  99                 /* convert gidstr to integer */
 100                 char *ptr;
 101
 102                 errno = 0;
 103                 gid = (gid_t)strtol(gidstr, &ptr, 10);
 104
 105                 if (*ptr || errno == ERANGE) {
 106                         errmsg(M_GID_INVALID, gidstr);
 107                         exit(EX_BADARG);
 108                 }
 109
 110                 switch (valid_gid(gid, NULL)) {
 111                 case RESERVED:
 112                         errmsg(M_RESERVED, gid);
 113                         break;
 114
 115                 case NOTUNIQUE:
 116                         if (!oflag) {
 117                                 errmsg(M_GRP_USED, gidstr);
 118                                 exit(EX_ID_EXISTS);
 119                         }
 120                         break;
 121
 122                 case INVALID:
 123                         errmsg(M_GID_INVALID, gidstr);
 124                         exit(EX_BADARG);
 125                         /*NOTREACHED*/
 126
 127                 case TOOBIG:
 128                         errmsg(M_TOOBIG, gid);
 129                         exit(EX_BADARG);
 130                         /*NOTREACHED*/
 131
 132                 }
 133
 134         } else gid = -1;
 135
 136         if (newname) {
 137                 switch (valid_gname(newname, NULL, &warning)) {
 138                 case INVALID:
 139                         errmsg(M_GRP_INVALID, newname);
 140                         exit(EX_BADARG);
 141                 case NOTUNIQUE:
 142                         errmsg(M_GRP_USED, newname);
 143                         exit(EX_NAME_EXISTS);
 144                 }
 145                 if (warning)
 146                         warningmsg(warning, newname);
 147         }
 148
 149         if ((valret = mod_group(grpname, gid, newname)) != EX_SUCCESS) {
 150                 if (valret == EX_NAME_NOT_EXIST)
 151                         errmsg(M_NO_GROUP, grpname);
 152                 else
 153                         errmsg(M_UPDATE, "modified");
 154         }
 155
 156         return (valret);
 157 }