125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/* $NetBSD: devopen.c,v 1.1 1999/12/09 14:53:22 tsutsui Exp $ */
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/*-
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* Copyright (C) 1999 Tsubai Masanari. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <lib/libkern/libkern.h>
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#include <lib/libsa/stand.h>
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#include <lib/libsa/ufs.h>
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#include <machine/romcall.h>
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#ifdef BOOT_DEBUG
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# define DPRINTF printf
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#else
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# define DPRINTF while (0) printf
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#endif
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int dkopen __P((struct open_file *, ...));
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int dkclose __P((struct open_file *));
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int dkstrategy __P((void *, int, daddr_t, size_t, void *, size_t *));
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struct devsw devsw[] = {
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{ "dk", dkstrategy, dkopen, dkclose, noioctl }
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};
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int ndevs = sizeof(devsw) / sizeof(devsw[0]);
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struct fs_ops file_system[] = {
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{ ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat }
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};
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int nfsys = sizeof(file_system) / sizeof(file_system[0]);
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struct romdev {
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int fd;
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} romdev;
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int
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devopen(f, fname, file)
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struct open_file *f;
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const char *fname;
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char **file; /* out */
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{
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int fd;
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char devname[32];
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char *cp;
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DPRINTF("devopen: %s\n", fname);
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strcpy(devname, fname);
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cp = strchr(devname, ')') + 1;
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*cp = 0;
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fd = rom_open(devname, 0);
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DPRINTF("devname = %s, fd = %d\n", devname, fd);
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if (fd == -1)
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return -1;
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romdev.fd = fd;
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f->f_dev = devsw;
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f->f_devdata = &romdev;
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*file = strchr(fname, ')') + 1;
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return 0;
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}
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int
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dkopen(struct open_file *f, ...)
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{
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DPRINTF("dkopen\n");
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return 0;
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}
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int
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dkclose(f)
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struct open_file *f;
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{
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struct romdev *dev = f->f_devdata;
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DPRINTF("dkclose\n");
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rom_close(dev->fd);
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return 0;
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}
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int
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dkstrategy(devdata, rw, blk, size, buf, rsize)
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void *devdata;
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int rw;
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daddr_t blk;
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size_t size;
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void *buf;
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size_t *rsize; /* out: number of bytes transfered */
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{
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struct romdev *dev = devdata;
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/* XXX should use partition offset */
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rom_lseek(dev->fd, blk * 512, 0);
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rom_read(dev->fd, buf, size);
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*rsize = size;
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return 0;
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}
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