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/* $OpenBSD: unixdev.c,v 1.3 1997/03/30 20:15:06 mickey Exp $ */
/*
* Copyright (c) 1996 Michael Shalayeff
* All rights reserved.
*
* 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 by Michael Shalayeff.
* 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 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.
*
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/syscall.h>
#include <string.h>
#define open uopen
#include <sys/fcntl.h>
#undef open
#include "libsa.h"
#include "unixdev.h"
int
unixstrategy(devdata, rw, blk, size, buf, rsize)
void *devdata;
int rw;
daddr_t blk;
size_t size;
void *buf;
size_t *rsize;
{
int rc = 0;
#ifdef UNIX_DEBUG
printf("unixstrategy: %s %d bytes @ %d\n",
(rw==F_READ?"reading":"writing"), size, blk);
#endif
if ((rc = ulseek((int)devdata, blk * DEV_BSIZE, 0)) >= 0)
rc = rw==F_READ? uread((int)devdata, buf, size) :
uwrite((int)devdata, buf, size);
if (rc >= 0) {
*rsize = (size_t)rc;
rc = 0;
} else
rc = errno;
return rc;
}
int
unixopen(struct open_file *f, ...)
{
register int fd;
register va_list ap;
register char **file, *p = NULL;
va_start(ap, f);
file = va_arg(ap, char **);
va_end(ap);
#ifdef UNIX_DEBUG
printf("unixopen: %s\n", *file);
#endif
if (strncmp("/dev/", *file, 5) == 0) {
/* p = strchr(p + 5, '/') */
for (p = *file + 5; *p != '\0' && *p != '/'; p++);
if (*p == '/')
*p = '\0';
}
f->f_devdata = (void *)(fd = uopen(*file, O_RDWR, 0));
*file = p;
if (p != NULL)
*p = '/';
return fd<0? -1: 0;
}
int
unixclose(f)
struct open_file *f;
{
return uclose((int)f->f_devdata);
}
int
unixioctl(f, cmd, data)
struct open_file *f;
u_long cmd;
void *data;
{
return uioctl((int)f->f_devdata, cmd, data);
}
off_t
ulseek( fd, off, wh)
int fd;
off_t off;
int wh;
{
return __syscall((quad_t)SYS_lseek, fd, 0, off, wh);
}
int
unix_probe()
{
return 1;
}
void
unix_putc(c)
int c;
{
uwrite(1, &c, 1);
}
int
unix_getc()
{
int c;
return uread(0, &c, 1)<1? -1: c;
}
int
unix_ischar()
{
struct timeval tv;
fd_set fdset;
int rc;
tv.tv_sec = 0;
tv.tv_usec = 100000;
FD_ZERO(&fdset);
FD_SET(0, &fdset);
if ((rc = syscall(SYS_select, 1, &fdset, NULL, NULL, &tv)) <= 0)
return 0;
else
return 1;
}
time_t
getsecs()
{
return 1;
}
void
atexit()
{
}
void
__main()
{
}
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