1 /* $NetBSD: fileread_bfs.c,v 1.3 2014/01/22 16:27:01 christos 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, bfs_sector; 53 54 if (pdinfo->magic != PDINFO_MAGIC) 55 return BERR_PDINFO; 56 57 #if 0 58 { 59 char msg[] = "00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f"; 60 const char hex[] = "0123456789ABCDEF"; 61 u_int v; 62 uint8_t *p = (void *)vtoc; 63 64 err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc); 65 for (n = 0; n < 16; n++) { 66 for (i = 0; i < 16; i++) { 67 v = (*p >> 4) & 0x0f; 68 msg[i*3] = hex[v]; 69 v = *p & 0x0f; 70 msg[i*3+1] = hex[v]; 71 p++; 72 } 73 for (i = 0; msg[i] != 0; i++) 74 ROM_PUTC(32 + i * 12, 0 + n * 24, msg[i]); 75 ROM_PUTC(0, 0 + n * 24, '\r'); 76 ROM_PUTC(0, 0 + n * 24, '\n'); 77 } 78 } 79 #endif 80 /* Read VTOC */ 81 err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc); 82 if ((err & 0x7f) != 0) 83 return BERR_RDVTOC; 84 85 if (vtoc->magic != VTOC_MAGIC) 86 return BERR_VTOC; 87 88 /* Find BFS */ 89 for (i = 0; i < VTOC_MAXPARTITIONS; i++, partition++) 90 if (partition->tag == VTOC_TAG_STAND) 91 break; 92 93 if (i == VTOC_MAXPARTITIONS) 94 return BERR_NOBFS; 95 bfs_sector = pdinfo->logical_sector + partition->start_sector; 96 97 /* Read inode */ 98 err = dk_read(bfs_sector + 1/* skip super block */, 1, inode); 99 if ((err & 0x7f) != 0) 100 return BERR_RDINODE; 101 102 if (inode->number != BFS_ROOT_INODE) 103 return BERR_NOROOT; 104 105 /* Read root directory */ 106 n = inode->eof_offset_byte - inode->start_sector * 512 + 1; 107 108 err = dk_read(bfs_sector + inode->start_sector, 1, dirent); 109 if ((err & 0x7f) != 0) 110 return BERR_RDDIRENT; 111 112 n /= sizeof(struct bfs_dirent); 113 DPRINTF("%d files.\n", n); 114 for (i = 0; i < n; i++, dirent++) 115 if (strcmp(dirent->name, fname) == 0) 116 break; 117 118 if (i == n) 119 return BERR_NOFILE; 120 121 /* Read file */ 122 DPRINTF("%s (%d)\n", dirent->name, dirent->inode); 123 inode = &inode[dirent->inode - BFS_ROOT_INODE]; 124 125 err = dk_read(bfs_sector + inode->start_sector, 126 inode->end_sector - inode->start_sector + 1, 127 (void *)SDBOOT_SCRATCHADDR); 128 129 if ((err & 0x7f) != 0) 130 return BERR_RDFILE; 131 132 *size = inode->eof_offset_byte - inode->start_sector * 512 + 1; 133 DPRINTF("read %dbyte\n", *size); 134 135 return 0; 136 } 137