1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate #include <sys/types.h>
34*0Sstevel@tonic-gate #include <stdio.h>
35*0Sstevel@tonic-gate #include <ctype.h>
36*0Sstevel@tonic-gate #include <grp.h>
37*0Sstevel@tonic-gate #include <sys/stat.h>
38*0Sstevel@tonic-gate #include <unistd.h>
39*0Sstevel@tonic-gate #include <userdefs.h>
40*0Sstevel@tonic-gate #include <strings.h>
41*0Sstevel@tonic-gate #include <stdlib.h>
42*0Sstevel@tonic-gate #include "users.h"
43*0Sstevel@tonic-gate #include "messages.h"
44*0Sstevel@tonic-gate
45*0Sstevel@tonic-gate /* lint error-killers: */
46*0Sstevel@tonic-gate void errmsg(int, int);
47*0Sstevel@tonic-gate
48*0Sstevel@tonic-gate /* Modify group to new gid and/or new name */
49*0Sstevel@tonic-gate int
mod_group(char * group,gid_t gid,char * newgroup)50*0Sstevel@tonic-gate mod_group(char *group, gid_t gid, char *newgroup)
51*0Sstevel@tonic-gate {
52*0Sstevel@tonic-gate int modified = 0;
53*0Sstevel@tonic-gate int fd;
54*0Sstevel@tonic-gate char tname[] = "/etc/gtmp.XXXXXX";
55*0Sstevel@tonic-gate FILE *e_fptr, *t_fptr;
56*0Sstevel@tonic-gate struct group *g_ptr;
57*0Sstevel@tonic-gate struct stat sbuf;
58*0Sstevel@tonic-gate boolean_t haserr;
59*0Sstevel@tonic-gate int line = 1;
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate if ((e_fptr = fopen(GROUP, "r")) == NULL)
62*0Sstevel@tonic-gate return (EX_UPDATE);
63*0Sstevel@tonic-gate
64*0Sstevel@tonic-gate if (fstat(fileno(e_fptr), &sbuf) != 0)
65*0Sstevel@tonic-gate return (EX_UPDATE);
66*0Sstevel@tonic-gate
67*0Sstevel@tonic-gate if ((fd = mkstemp(tname)) == -1)
68*0Sstevel@tonic-gate return (EX_UPDATE);
69*0Sstevel@tonic-gate
70*0Sstevel@tonic-gate if ((t_fptr = fdopen(fd, "w")) == NULL) {
71*0Sstevel@tonic-gate (void) close(fd);
72*0Sstevel@tonic-gate (void) unlink(tname);
73*0Sstevel@tonic-gate return (EX_UPDATE);
74*0Sstevel@tonic-gate }
75*0Sstevel@tonic-gate
76*0Sstevel@tonic-gate /*
77*0Sstevel@tonic-gate * Get ownership and permissions correct
78*0Sstevel@tonic-gate */
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate if (fchmod(fd, sbuf.st_mode) != 0 ||
81*0Sstevel@tonic-gate fchown(fd, sbuf.st_uid, sbuf.st_gid) != 0) {
82*0Sstevel@tonic-gate (void) fclose(t_fptr);
83*0Sstevel@tonic-gate (void) unlink(tname);
84*0Sstevel@tonic-gate return (EX_UPDATE);
85*0Sstevel@tonic-gate }
86*0Sstevel@tonic-gate
87*0Sstevel@tonic-gate while ((g_ptr = fgetgrent(e_fptr)) != NULL) {
88*0Sstevel@tonic-gate
89*0Sstevel@tonic-gate /* check to see if group is one to modify */
90*0Sstevel@tonic-gate if (strcmp(g_ptr->gr_name, group) == 0) {
91*0Sstevel@tonic-gate if (newgroup != NULL)
92*0Sstevel@tonic-gate g_ptr->gr_name = newgroup;
93*0Sstevel@tonic-gate if (gid != -1)
94*0Sstevel@tonic-gate g_ptr->gr_gid = gid;
95*0Sstevel@tonic-gate modified++;
96*0Sstevel@tonic-gate }
97*0Sstevel@tonic-gate putgrent(g_ptr, t_fptr);
98*0Sstevel@tonic-gate line++;
99*0Sstevel@tonic-gate }
100*0Sstevel@tonic-gate
101*0Sstevel@tonic-gate haserr = !feof(e_fptr);
102*0Sstevel@tonic-gate if (haserr)
103*0Sstevel@tonic-gate errmsg(M_SYNTAX, line);
104*0Sstevel@tonic-gate
105*0Sstevel@tonic-gate (void) fclose(e_fptr);
106*0Sstevel@tonic-gate
107*0Sstevel@tonic-gate if (fclose(t_fptr) != 0 || haserr) {
108*0Sstevel@tonic-gate /* GROUP file contains bad entries or write failed. */
109*0Sstevel@tonic-gate (void) unlink(tname);
110*0Sstevel@tonic-gate return (EX_UPDATE);
111*0Sstevel@tonic-gate }
112*0Sstevel@tonic-gate
113*0Sstevel@tonic-gate if (modified) {
114*0Sstevel@tonic-gate if (rename(tname, GROUP) != 0) {
115*0Sstevel@tonic-gate (void) unlink(tname);
116*0Sstevel@tonic-gate return (EX_UPDATE);
117*0Sstevel@tonic-gate }
118*0Sstevel@tonic-gate return (EX_SUCCESS);
119*0Sstevel@tonic-gate } else {
120*0Sstevel@tonic-gate (void) unlink(tname);
121*0Sstevel@tonic-gate return (EX_NAME_NOT_EXIST);
122*0Sstevel@tonic-gate }
123*0Sstevel@tonic-gate }
124