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
main(int argc,char * argv[])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 }
158