xref: /titanic_51/usr/src/cmd/oamuser/group/groupmod.c (revision 21b926adb26b0bf23fe75045ed308af582303bd0)
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 }
158