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 #include <sys/types.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <ctype.h>
34 #include <limits.h>
35 #include <userdefs.h>
36 #include <users.h>
37 #include <errno.h>
38 #include "messages.h"
39
40 /*
41 * groupmod -g gid [-o] | -n name group
42 *
43 * This command modifies groups on the system. Arguments are:
44 *
45 * gid - a gid_t less than UID_MAX
46 * name - a string of printable characters excluding colon (:) and less
47 * than MAXGLEN characters long.
48 * group - a string of printable characters excluding colon(:) and less
49 * than MAXGLEN characters long.
50 */
51
52 extern int valid_gid(), mod_group();
53 extern void errmsg();
54
55 char *cmdname = "groupmod";
56
57 int
main(int argc,char * argv[])58 main(int argc, char *argv[])
59 {
60 int ch; /* return from getopt */
61 gid_t gid; /* group id */
62 int oflag = 0; /* flags */
63 int valret; /* return from valid_gid() */
64 char *gidstr = NULL; /* gid from command line */
65 char *newname = NULL; /* new group name with -n option */
66 char *grpname; /* group name from command line */
67 int warning;
68
69 oflag = 0; /* flags */
70
71 while ((ch = getopt(argc, argv, "g:on:")) != EOF) {
72 switch (ch) {
73 case 'g':
74 gidstr = optarg;
75 break;
76 case 'o':
77 oflag++;
78 break;
79 case 'n':
80 newname = optarg;
81 break;
82 case '?':
83 errmsg(M_MUSAGE);
84 exit(EX_SYNTAX);
85 }
86 }
87
88 if ((oflag && !gidstr) || optind != argc - 1) {
89 errmsg(M_MUSAGE);
90 exit(EX_SYNTAX);
91 }
92
93 grpname = argv[optind];
94
95 if (gidstr) {
96 /* convert gidstr to integer */
97 char *ptr;
98
99 errno = 0;
100 gid = (gid_t)strtol(gidstr, &ptr, 10);
101
102 if (*ptr || errno == ERANGE) {
103 errmsg(M_GID_INVALID, gidstr);
104 exit(EX_BADARG);
105 }
106
107 switch (valid_gid(gid, NULL)) {
108 case RESERVED:
109 errmsg(M_RESERVED, gid);
110 break;
111
112 case NOTUNIQUE:
113 if (!oflag) {
114 errmsg(M_GRP_USED, gidstr);
115 exit(EX_ID_EXISTS);
116 }
117 break;
118
119 case INVALID:
120 errmsg(M_GID_INVALID, gidstr);
121 exit(EX_BADARG);
122 /*NOTREACHED*/
123
124 case TOOBIG:
125 errmsg(M_TOOBIG, gid);
126 exit(EX_BADARG);
127 /*NOTREACHED*/
128
129 }
130
131 } else gid = -1;
132
133 if (newname) {
134 switch (valid_gname(newname, NULL, &warning)) {
135 case INVALID:
136 errmsg(M_GRP_INVALID, newname);
137 exit(EX_BADARG);
138 case NOTUNIQUE:
139 errmsg(M_GRP_USED, newname);
140 exit(EX_NAME_EXISTS);
141 }
142 if (warning)
143 warningmsg(warning, newname);
144 }
145
146 if ((valret = mod_group(grpname, gid, newname)) != EX_SUCCESS) {
147 if (valret == EX_NAME_NOT_EXIST)
148 errmsg(M_NO_GROUP, grpname);
149 else
150 errmsg(M_UPDATE, "modified");
151 }
152
153 return (valret);
154 }
155