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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 1.2 */
/*LINTLIBRARY*/
/*
* listdev.c
*
* Contains:
* listdev() List attributes defined for a device
*/
/*
* Header files needed:
* <sys/types.h> System Data Types
* <string.h> Standard string definitions
* <devmgmt.h> Device management definitions
* "devtab.h" Local device table definitions
*/
#include <sys/types.h>
#include <string.h>
#include <devmgmt.h>
#include "devtab.h"
#include <stdlib.h>
/*
* Local Definitions:
*/
/*
* Local, Static data:
*/
/*
* void sortlist(list)
* char **list
*
* This function sorts a list of character strings
* so that the list is ordered alphabetically.
*
* Arguments:
* list The list to be sorted
*
* Returns: void
*/
static void
sortlist(char **list) /* List to be sorted */
{
char **pp; /* Pointer to item being sorted */
char **qq;
char **rr;
char *t; /* Temp for swapping pointers */
/* If the list isn't empty ... */
if (*list) {
/* Find the last item in the list */
for (pp = list; *pp; pp++)
;
--pp;
/*
* Sort 'em by sorting larger and larger portions
* of the list (my CSC101 fails me, I forget what
* this sort is called!) [Where I come from, CS
* is Crop Science...]
*/
while (pp != list) {
qq = pp;
rr = --pp;
while (*qq && (strcmp(*rr, *qq) > 0)) {
t = *rr;
*rr++ = *qq;
*qq++ = t;
}
}
}
}
/*
* char **listdev(device)
* char *device;
*
* Generate an alphabetized list of attribute names of the
* attributes defined for the device <device>.
*
* Arguments:
* device Device who's attributes are to be listed
*
* Returns: char **
* List of attribute names of the attributes defined for this
* device. (Never empty since all devices have the "alias"
* attribute defined.)
*/
char **
listdev(char *device) /* Device to describe */
{
/* Automatic data */
struct devtabent *devtabent; /* Ptr to devtab entry */
struct attrval *attrval; /* Ptr to attr val pair */
char **list; /* Ptr to alloc'd list */
char **rtnval; /* Value to return */
char **pp; /* Ptr to current val in list */
int noerror; /* FLAG, TRUE if :-) */
int n; /* Temp counter */
/* If the device <device> is defined ... */
if (devtabent = _getdevrec(device)) {
/*
* Count the number of attributes defined for the device
* being sure to count the (char *) NULL that terminates
* the list
*/
n = 1;
if (devtabent->alias) n++; /* Alias, if defined */
if (devtabent->cdevice) n++; /* Char spcl, if defined */
if (devtabent->bdevice) n++; /* Blk spcl, if defined */
if (devtabent->pathname) n++; /* Pathname, if defined */
/* Other attributes, if any */
if ((attrval = devtabent->attrlist) != NULL) {
do
n++;
while ((attrval = attrval->next) != NULL);
}
noerror = TRUE;
if (list = malloc(n*sizeof (char *))) {
pp = list;
if (devtabent->alias) {
if (*pp = malloc(strlen(DTAB_ALIAS)+1))
(void) strcpy(*pp++, DTAB_ALIAS);
else noerror = FALSE;
}
if (noerror && devtabent->bdevice) {
if (*pp = malloc(strlen(DTAB_BDEVICE)+1))
(void) strcpy(*pp++, DTAB_BDEVICE);
else noerror = FALSE;
}
if (noerror && devtabent->cdevice) {
if (*pp = malloc(strlen(DTAB_CDEVICE)+1))
(void) strcpy(*pp++, DTAB_CDEVICE);
else noerror = FALSE;
}
if (noerror && devtabent->pathname) {
if (*pp = malloc(strlen(DTAB_PATHNAME)+1))
(void) strcpy(*pp++, DTAB_PATHNAME);
else noerror = FALSE;
}
if (noerror && (attrval = devtabent->attrlist)) {
do {
if (*pp = malloc(strlen(attrval->attr)+1))
(void) strcpy(*pp++, attrval->attr);
else noerror = FALSE;
} while (noerror && (attrval = attrval->next));
}
if (noerror) {
*pp = NULL;
sortlist(list);
rtnval = list;
} else {
for (pp = list; *pp; pp++) free(*pp);
free(list);
rtnval = NULL;
}
} else rtnval = NULL;
} else rtnval = NULL;
_enddevtab();
/* Fini */
return (rtnval);
}
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