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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <regex.h>
#include <devfsadm.h>
#include <stdio.h>
#include <strings.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/mkdev.h>
#include <sys/lofi.h>
static int lofi(di_minor_t minor, di_node_t node);
static int lofi_rm_all(char *link);
/*
* devfs create callback register
*/
static devfsadm_create_t lofi_create_cbt[] = {
{ "pseudo", "ddi_pseudo", LOFI_DRIVER_NAME,
TYPE_EXACT | DRV_EXACT, ILEVEL_0, lofi,
},
};
DEVFSADM_CREATE_INIT_V0(lofi_create_cbt);
/*
* devfs cleanup register
*/
static devfsadm_remove_V1_t lofi_remove_cbt[] = {
{"pseudo", "^r?lofi/[0-9]+$", RM_ALWAYS | RM_PRE | RM_HOT,
ILEVEL_0, lofi_rm_all},
};
DEVFSADM_REMOVE_INIT_V1(lofi_remove_cbt);
/*
* Wrapper around devfsadm_rm_all() that allows termination of remove
* process
*/
static int
lofi_rm_all(char *link)
{
devfsadm_rm_all(link);
return (DEVFSADM_TERMINATE);
}
/*
* For the master device:
* /dev/lofictl -> /devices/pseudo/lofi@0:ctl
* For each other device
* /dev/lofi/1 -> /devices/pseudo/lofi@0:1
* /dev/rlofi/1 -> /devices/pseudo/lofi@0:1,raw
*/
static int
lofi(di_minor_t minor, di_node_t node)
{
dev_t dev;
char mn[MAXNAMELEN + 1];
char blkname[MAXNAMELEN + 1];
char rawname[MAXNAMELEN + 1];
char path[PATH_MAX + 1];
(void) strcpy(mn, di_minor_name(minor));
if (strcmp(mn, "ctl") == 0) {
(void) devfsadm_mklink(LOFI_CTL_NAME, node, minor, 0);
} else {
dev = di_minor_devt(minor);
(void) snprintf(blkname, sizeof (blkname), "%d",
(int)minor(dev));
(void) snprintf(rawname, sizeof (rawname), "%d,raw",
(int)minor(dev));
if (strcmp(mn, blkname) == 0) {
(void) snprintf(path, sizeof (path), "%s/%s",
LOFI_BLOCK_NAME, blkname);
} else if (strcmp(mn, rawname) == 0) {
(void) snprintf(path, sizeof (path), "%s/%s",
LOFI_CHAR_NAME, blkname);
} else {
return (DEVFSADM_CONTINUE);
}
(void) devfsadm_mklink(path, node, minor, 0);
}
return (DEVFSADM_CONTINUE);
}
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