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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#include <sys/types.h>
#include <stdio.h>
#include <ctype.h>
#include <grp.h>
#include <sys/stat.h>
#include <unistd.h>
#include <userdefs.h>
#include <strings.h>
#include <stdlib.h>
#include "users.h"
#include "messages.h"
/* lint error-killers: */
void errmsg(int, int);
/* Modify group to new gid and/or new name */
int
mod_group(char *group, gid_t gid, char *newgroup)
{
int modified = 0;
int fd;
char tname[] = "/etc/gtmp.XXXXXX";
FILE *e_fptr, *t_fptr;
struct group *g_ptr;
struct stat sbuf;
boolean_t haserr;
int line = 1;
if ((e_fptr = fopen(GROUP, "r")) == NULL)
return (EX_UPDATE);
if (fstat(fileno(e_fptr), &sbuf) != 0)
return (EX_UPDATE);
if ((fd = mkstemp(tname)) == -1)
return (EX_UPDATE);
if ((t_fptr = fdopen(fd, "w")) == NULL) {
(void) close(fd);
(void) unlink(tname);
return (EX_UPDATE);
}
/*
* Get ownership and permissions correct
*/
if (fchmod(fd, sbuf.st_mode) != 0 ||
fchown(fd, sbuf.st_uid, sbuf.st_gid) != 0) {
(void) fclose(t_fptr);
(void) unlink(tname);
return (EX_UPDATE);
}
while ((g_ptr = fgetgrent(e_fptr)) != NULL) {
/* check to see if group is one to modify */
if (strcmp(g_ptr->gr_name, group) == 0) {
if (newgroup != NULL)
g_ptr->gr_name = newgroup;
if (gid != -1)
g_ptr->gr_gid = gid;
modified++;
}
putgrent(g_ptr, t_fptr);
line++;
}
haserr = !feof(e_fptr);
if (haserr)
errmsg(M_SYNTAX, line);
(void) fclose(e_fptr);
if (fclose(t_fptr) != 0 || haserr) {
/* GROUP file contains bad entries or write failed. */
(void) unlink(tname);
return (EX_UPDATE);
}
if (modified) {
if (rename(tname, GROUP) != 0) {
(void) unlink(tname);
return (EX_UPDATE);
}
return (EX_SUCCESS);
} else {
(void) unlink(tname);
return (EX_NAME_NOT_EXIST);
}
}
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