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/* $OpenBSD: devopen.c,v 1.3 1997/07/21 06:58:14 pefo Exp $ */
/*
* Copyright (c) 1997 Per Fogelstrom
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed under OpenBSD by
* Per Fogelstrom.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
#include <lib/libsa/stand.h>
static int
a2i(ch)
char *ch;
{
unsigned int v;
v = *ch - '0';
if(v > 9)
v = 0;
return(v);
}
int
devopen(f, fname, file)
struct open_file *f;
const char *fname;
char **file; /* out */
{
const char *cp;
char *ncp;
struct devsw *dp;
unsigned int c;
int ctlr = 0, unit = 0, part = 0;
char namebuf[20];
int rc, n;
cp = fname;
ncp = namebuf;
while ((c = *cp++) != '\0' && c != '(') {
*ncp++ = c;
}
*ncp = '\0';
if(c == '(') {
/* get controller number */
ctlr = a2i(cp);
cp += 2;
/* get SCSI device number */
unit = a2i(cp);
cp += 2;
/* get partition number */
part = a2i(cp);
cp += 2;
if (cp[-1] != ')')
return (ENXIO);
}
dp = devsw;
n = ndevs;
while(n--) {
if (strcmp (namebuf, dp->dv_name) == 0) {
rc = (dp->dv_open)(f, ctlr, unit, part);
if (!rc) {
f->f_dev = dp;
if (file && *cp != '\0')
*file = (char *)cp;
}
return (rc);
}
dp++;
}
return ENXIO;
}
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