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/* $NetBSD: devopen.c,v 1.6 2005/12/11 12:18:58 christos Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)devopen.c 8.1 (Berkeley) 6/10/93
*/
#include <lib/libsa/stand.h>
#include <lib/libkern/libkern.h>
/*
* Decode the string 'fname', open the device and return the remaining
* file name if any.
*/
int
devopen(struct open_file *f, const char *fname, char **file)
{
#if 0
int ctlr = 0, unit = 0, part = 0;
#endif
int error;
char namebuf[128];
char devtype[16];
const char *cp;
char *ncp;
#if !defined(LIBSA_SINGLE_DEVICE)
int i;
struct devsw *dp;
#endif
cp = fname;
ncp = (char *)fname;
/*
* If device starts with a PCI bus specifier, skip past it so the
* device-matching code below gets the actual device type. Leave
* fname as is, since it'll be passed back to ARCS to open the
* device. This is necessary for the IP32.
*/
if (strncmp(cp, "pci", 3) == 0) {
while (*ncp && *ncp++ != ')')
;
if (*ncp)
cp = ncp;
}
/*
* Look for a string like 'scsi(0)disk(0)rdisk(0)partition(0)netbsd'
* or 'dksc(0,0,0)/netbsd' (the file can either be a relative path
* or an abosolute path).
*/
if (strncmp(cp, "scsi", 4) == 0) {
strcpy(devtype, "scsi");
} else if (strncmp(cp, "dksc", 4) == 0) {
strcpy(devtype, "dksc");
} else {
return ENXIO;
}
while (ncp != NULL && *ncp != 0) {
while (*ncp && *ncp++ != ')')
;
if (*ncp)
cp = ncp;
}
strncpy(namebuf, fname, sizeof(namebuf));
namebuf[cp - fname] = 0;
printf("devopen: %s type %s file %s\n", namebuf, devtype, cp);
#ifdef LIBSA_SINGLE_DEVICE
error = DEV_OPEN(dp)(f, fname);
#else /* !LIBSA_SINGLE_DEVICE */
for (dp = devsw, i = 0; i < ndevs; dp++, i++)
if (dp->dv_name && strcmp(devtype, dp->dv_name) == 0)
goto found;
printf("Unknown device '%s'\nKnown devices are:", devtype);
for (dp = devsw, i = 0; i < ndevs; dp++, i++)
if (dp->dv_name)
printf(" %s", dp->dv_name);
printf("\n");
return ENXIO;
found:
error = (dp->dv_open)(f, namebuf);
#endif /* !LIBSA_SINGLE_DEVICE */
if (error)
return error;
#ifndef LIBSA_SINGLE_DEVICE
f->f_dev = dp;
#endif
if (file && *cp != '\0')
*file = (char *)cp; /* XXX */
return 0;
}
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