1 /* $NetBSD: fileread_bfs.c,v 1.2 2008/04/28 20:23:18 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2004, 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <lib/libsa/stand.h> 33 #include <lib/libkern/libkern.h> 34 35 #include <sys/types.h> 36 #include <sys/param.h> 37 #include "bootxx.h" 38 39 #include <machine/pdinfo.h> 40 #include <machine/vtoc.h> 41 #include <machine/bfs.h> 42 #include <machine/sbd.h> 43 44 int 45 fileread(const char *fname, size_t *size) 46 { 47 struct pdinfo_sector *pdinfo = (void *)SDBOOT_PDINFOADDR; 48 struct vtoc_sector *vtoc = (void *)SDBOOT_VTOCADDR; 49 struct ux_partition *partition = vtoc->partition; 50 struct bfs_inode *inode = (void *)SDBOOT_INODEADDR; 51 struct bfs_dirent *dirent = (void *)SDBOOT_DIRENTADDR; 52 int i, n, err, block_size, bfs_sector; 53 54 if (pdinfo->magic != PDINFO_MAGIC) 55 return BERR_PDINFO; 56 block_size = pdinfo->geometory.bytes_per_sector; 57 58 #if 0 59 { 60 char msg[] = "00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f"; 61 const char hex[] = "0123456789ABCDEF"; 62 u_int v; 63 uint8_t *p = (void *)vtoc; 64 65 err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc); 66 for (n = 0; n < 16; n++) { 67 for (i = 0; i < 16; i++) { 68 v = (*p >> 4) & 0x0f; 69 msg[i*3] = hex[v]; 70 v = *p & 0x0f; 71 msg[i*3+1] = hex[v]; 72 p++; 73 } 74 for (i = 0; msg[i] != 0; i++) 75 ROM_PUTC(32 + i * 12, 0 + n * 24, msg[i]); 76 ROM_PUTC(0, 0 + n * 24, '\r'); 77 ROM_PUTC(0, 0 + n * 24, '\n'); 78 } 79 } 80 #endif 81 /* Read VTOC */ 82 err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc); 83 if ((err & 0x7f) != 0) 84 return BERR_RDVTOC; 85 86 if (vtoc->magic != VTOC_MAGIC) 87 return BERR_VTOC; 88 89 /* Find BFS */ 90 for (i = 0; i < VTOC_MAXPARTITIONS; i++, partition++) 91 if (partition->tag == VTOC_TAG_STAND) 92 break; 93 94 if (i == VTOC_MAXPARTITIONS) 95 return BERR_NOBFS; 96 bfs_sector = pdinfo->logical_sector + partition->start_sector; 97 98 /* Read inode */ 99 err = dk_read(bfs_sector + 1/* skip super block */, 1, inode); 100 if ((err & 0x7f) != 0) 101 return BERR_RDINODE; 102 103 if (inode->number != BFS_ROOT_INODE) 104 return BERR_NOROOT; 105 106 /* Read root directory */ 107 n = inode->eof_offset_byte - inode->start_sector * 512 + 1; 108 109 err = dk_read(bfs_sector + inode->start_sector, 1, dirent); 110 if ((err & 0x7f) != 0) 111 return BERR_RDDIRENT; 112 113 n /= sizeof(struct bfs_dirent); 114 DPRINTF("%d files.\n", n); 115 for (i = 0; i < n; i++, dirent++) 116 if (strcmp(dirent->name, fname) == 0) 117 break; 118 119 if (i == n) 120 return BERR_NOFILE; 121 122 /* Read file */ 123 DPRINTF("%s (%d)\n", dirent->name, dirent->inode); 124 inode = &inode[dirent->inode - BFS_ROOT_INODE]; 125 126 err = dk_read(bfs_sector + inode->start_sector, 127 inode->end_sector - inode->start_sector + 1, 128 (void *)SDBOOT_SCRATCHADDR); 129 130 if ((err & 0x7f) != 0) 131 return BERR_RDFILE; 132 133 *size = inode->eof_offset_byte - inode->start_sector * 512 + 1; 134 DPRINTF("read %dbyte\n", *size); 135 136 return 0; 137 } 138