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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 (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1997, by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */
/*LINTLIBRARY*/
/*
* listdgrp.c
*
* Contents:
* listdgrp() List devices that belong to a device group.
*/
/*
* Header files referenced:
* <sys/types.h> System Data Types
* <errno.h> UNIX and C error definitions
* <string.h> String handling definitions
* <devmgmt.h> Device management definitions
* "devtab.h" Local device table definitions
*/
#include <sys/types.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <devmgmt.h>
#include "devtab.h"
/*
* Local definitions
*/
/*
* Structure definitions:
*/
/*
* Local functions referenced
*/
/*
* Global Data
*/
/*
* Static Data
*/
/*
* char **listdgrp(dgroup)
* char *dgroup
*
* List the members of a device group.
*
* Arguments:
* char *dgroup The device group needed
*
* Returns: char **
* A pointer to a list of pointers to char-strings containing
* the members of the device group.
*
* Notes:
* - malloc()ed space containing addresses
*/
char **
listdgrp(char *dgroup) /* The device group to list */
{
/* Automatic data */
struct dgrptabent *dgrpent; /* Device group description */
struct member *member; /* Device group member */
char **listbuf; /* Buffer allocated for addrs */
char **rtnval; /* Value to return */
char **pp; /* Running ptr through addrs */
int noerror; /* Flag, TRUE if all's well */
int n; /* Counter */
/*
* Initializations
*/
/*
* Get the record for this device group
*/
if (dgrpent = _getdgrprec(dgroup)) {
/* Count the number of members in the device group */
n = 1;
for (member = dgrpent->membership; member; member = member->next)
n++;
/* Get space for the list to return */
if (listbuf = malloc(n*sizeof (char **))) {
/*
* For each member in the device group, add that device
* name to the list of devices we're building
*/
pp = listbuf;
noerror = TRUE;
for (member = dgrpent->membership; noerror && member;
member = member->next) {
if (*pp = malloc(strlen(member->name)+1))
(void) strcpy(*pp++, member->name);
else noerror = FALSE;
}
/*
* If there's no error, terminate the list we've built.
* Otherwise, free the space allocated to the stuff we've built
*/
if (noerror) {
*pp = NULL;
rtnval = listbuf;
} else {
/* Some error occurred. Clean up allocations */
for (pp = listbuf; *pp; pp++) free(*pp);
free(listbuf);
rtnval = NULL;
}
} /* if (malloc()) */
/* Free space alloced to the device group entry */
_freedgrptabent(dgrpent);
} /* if (_getdgrprec()) */
else rtnval = NULL;
/* Finished -- wasn't that simple? */
return (rtnval);
}
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