/* $NetBSD: fileread_bfs.c,v 1.3 2014/01/22 16:27:01 christos Exp $ */
/*-
* Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <lib/libsa/stand.h>
#include <lib/libkern/libkern.h>
#include <sys/types.h>
#include <sys/param.h>
#include "bootxx.h"
#include <machine/pdinfo.h>
#include <machine/vtoc.h>
#include <machine/bfs.h>
#include <machine/sbd.h>
int
fileread(const char *fname, size_t *size)
{
struct pdinfo_sector *pdinfo = (void *)SDBOOT_PDINFOADDR;
struct vtoc_sector *vtoc = (void *)SDBOOT_VTOCADDR;
struct ux_partition *partition = vtoc->partition;
struct bfs_inode *inode = (void *)SDBOOT_INODEADDR;
struct bfs_dirent *dirent = (void *)SDBOOT_DIRENTADDR;
int i, n, err, bfs_sector;
if (pdinfo->magic != PDINFO_MAGIC)
return BERR_PDINFO;
#if 0
{
char msg[] = "00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f";
const char hex[] = "0123456789ABCDEF";
u_int v;
uint8_t *p = (void *)vtoc;
err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc);
for (n = 0; n < 16; n++) {
for (i = 0; i < 16; i++) {
v = (*p >> 4) & 0x0f;
msg[i*3] = hex[v];
v = *p & 0x0f;
msg[i*3+1] = hex[v];
p++;
}
for (i = 0; msg[i] != 0; i++)
ROM_PUTC(32 + i * 12, 0 + n * 24, msg[i]);
ROM_PUTC(0, 0 + n * 24, '\r');
ROM_PUTC(0, 0 + n * 24, '\n');
}
}
#endif
/* Read VTOC */
err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc);
if ((err & 0x7f) != 0)
return BERR_RDVTOC;
if (vtoc->magic != VTOC_MAGIC)
return BERR_VTOC;
/* Find BFS */
for (i = 0; i < VTOC_MAXPARTITIONS; i++, partition++)
if (partition->tag == VTOC_TAG_STAND)
break;
if (i == VTOC_MAXPARTITIONS)
return BERR_NOBFS;
bfs_sector = pdinfo->logical_sector + partition->start_sector;
/* Read inode */
err = dk_read(bfs_sector + 1/* skip super block */, 1, inode);
if ((err & 0x7f) != 0)
return BERR_RDINODE;
if (inode->number != BFS_ROOT_INODE)
return BERR_NOROOT;
/* Read root directory */
n = inode->eof_offset_byte - inode->start_sector * 512 + 1;
err = dk_read(bfs_sector + inode->start_sector, 1, dirent);
if ((err & 0x7f) != 0)
return BERR_RDDIRENT;
n /= sizeof(struct bfs_dirent);
DPRINTF("%d files.\n", n);
for (i = 0; i < n; i++, dirent++)
if (strcmp(dirent->name, fname) == 0)
break;
if (i == n)
return BERR_NOFILE;
/* Read file */
DPRINTF("%s (%d)\n", dirent->name, dirent->inode);
inode = &inode[dirent->inode - BFS_ROOT_INODE];
err = dk_read(bfs_sector + inode->start_sector,
inode->end_sector - inode->start_sector + 1,
(void *)SDBOOT_SCRATCHADDR);
if ((err & 0x7f) != 0)
return BERR_RDFILE;
*size = inode->eof_offset_byte - inode->start_sector * 512 + 1;
DPRINTF("read %dbyte\n", *size);
return 0;
}