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      1 /*	$NetBSD: hfs.c,v 1.5 2005/12/11 12:18:06 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/param.h>
     30 #include <lib/libkern/libkern.h>
     31 #include <lib/libsa/stand.h>
     32 
     33 #include <openfirm.h>
     34 #include <hfs.h>
     35 
     36 static int OF_fd;	/* XXX */
     37 
     38 int
     39 hfs_open(const char *path, struct open_file *f)
     40 {
     41 	int chosen;
     42 	char bootpath[128], *cp;
     43 
     44 	if ((chosen = OF_finddevice("/chosen")) == -1)
     45 		return ENXIO;
     46 	memset(bootpath, 0, sizeof bootpath);
     47 	OF_getprop(chosen, "bootpath", bootpath, sizeof bootpath);
     48 	cp = strrchr(bootpath, ',');
     49 	if (cp == NULL)
     50 		return ENXIO;
     51 
     52 	strcpy(cp + 1, path);
     53 	OF_fd = OF_open(bootpath);
     54 	if (OF_fd == -1)
     55 		return ENOENT;
     56 
     57 	return 0;
     58 }
     59 
     60 int
     61 hfs_close(struct open_file *f)
     62 {
     63 	OF_close(OF_fd);
     64 	return 0;
     65 }
     66 
     67 int
     68 hfs_read(struct open_file *f, void *start, size_t size, size_t *resid)
     69 {
     70 	int len;
     71 
     72 	len = OF_read(OF_fd, start, size);
     73 	size -= len;
     74 	if (resid)
     75 		*resid = size;
     76 	return 0;
     77 }
     78 
     79 int
     80 hfs_write(struct open_file *f, void *start, size_t size, size_t *resid)
     81 {
     82 	printf("hfs_write\n");
     83 	return ENXIO;
     84 }
     85 
     86 off_t
     87 hfs_seek(struct open_file *f, off_t offset, int where)
     88 {
     89 	switch (where) {
     90 	case SEEK_SET:
     91 		return OF_seek(OF_fd, offset);
     92 	case SEEK_CUR:
     93 	case SEEK_END:
     94 	default:
     95 		return -1;
     96 	}
     97 }
     98 
     99 int
    100 hfs_stat(struct open_file *f, struct stat *sb)
    101 {
    102 	return 0;
    103 }
    104