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1.1 ! root 1: /* ! 2: * libhfs - library for reading and writing Macintosh HFS volumes ! 3: * Copyright (C) 1996-1998, 2001 Robert Leslie ! 4: * ! 5: * This program is free software; you can redistribute it and/or modify ! 6: * it under the terms of the GNU General Public License as published by ! 7: * the Free Software Foundation; either version 2 of the License, or ! 8: * (at your option) any later version. ! 9: * ! 10: * This program is distributed in the hope that it will be useful, ! 11: * but WITHOUT ANY WARRANTY; without even the implied warranty of ! 12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 13: * GNU General Public License for more details. ! 14: * ! 15: * You should have received a copy of the GNU General Public License ! 16: * along with this program; if not, write to the Free Software ! 17: * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, ! 18: * MA 02110-1301, USA. ! 19: * ! 20: * $Id: low.c,v 1.8 1998/11/02 22:09:03 rob Exp $ ! 21: */ ! 22: ! 23: #include "config.h" ! 24: #include "libhfs.h" ! 25: #include "low.h" ! 26: #include "data.h" ! 27: #include "block.h" ! 28: #include "file.h" ! 29: ! 30: /* ! 31: * NAME: low->getpmentry() ! 32: * DESCRIPTION: read a partition map entry ! 33: */ ! 34: int l_getpmentry(hfsvol *vol, Partition *map, unsigned long bnum) ! 35: { ! 36: block b; ! 37: const byte *ptr = b; ! 38: int i; ! 39: ! 40: if (b_readpb(vol, bnum, &b, 1) == -1) ! 41: goto fail; ! 42: ! 43: d_fetchsw(&ptr, &map->pmSig); ! 44: d_fetchsw(&ptr, &map->pmSigPad); ! 45: d_fetchsl(&ptr, &map->pmMapBlkCnt); ! 46: d_fetchsl(&ptr, &map->pmPyPartStart); ! 47: d_fetchsl(&ptr, &map->pmPartBlkCnt); ! 48: ! 49: strncpy((char *) map->pmPartName, (const char *) ptr, 32); ! 50: map->pmPartName[32] = 0; ! 51: ptr += 32; ! 52: ! 53: strncpy((char *) map->pmParType, (const char *) ptr, 32); ! 54: map->pmParType[32] = 0; ! 55: ptr += 32; ! 56: ! 57: d_fetchsl(&ptr, &map->pmLgDataStart); ! 58: d_fetchsl(&ptr, &map->pmDataCnt); ! 59: d_fetchsl(&ptr, &map->pmPartStatus); ! 60: d_fetchsl(&ptr, &map->pmLgBootStart); ! 61: d_fetchsl(&ptr, &map->pmBootSize); ! 62: d_fetchsl(&ptr, &map->pmBootAddr); ! 63: d_fetchsl(&ptr, &map->pmBootAddr2); ! 64: d_fetchsl(&ptr, &map->pmBootEntry); ! 65: d_fetchsl(&ptr, &map->pmBootEntry2); ! 66: d_fetchsl(&ptr, &map->pmBootCksum); ! 67: ! 68: strncpy((char *) map->pmProcessor, (const char *) ptr, 16); ! 69: map->pmProcessor[16] = 0; ! 70: ptr += 16; ! 71: ! 72: for (i = 0; i < 188; ++i) ! 73: d_fetchsw(&ptr, &map->pmPad[i]); ! 74: ! 75: ASSERT(ptr - b == HFS_BLOCKSZ); ! 76: ! 77: return 0; ! 78: ! 79: fail: ! 80: return -1; ! 81: } ! 82: ! 83: ! 84: /* ! 85: * NAME: low->getmdb() ! 86: * DESCRIPTION: read a master directory block ! 87: */ ! 88: int l_getmdb(hfsvol *vol, MDB *mdb, int backup) ! 89: { ! 90: block b; ! 91: const byte *ptr = b; ! 92: int i; ! 93: ! 94: if (b_readlb(vol, backup ? vol->vlen - 2 : 2, &b) == -1) ! 95: goto fail; ! 96: ! 97: d_fetchsw(&ptr, &mdb->drSigWord); ! 98: d_fetchsl(&ptr, &mdb->drCrDate); ! 99: d_fetchsl(&ptr, &mdb->drLsMod); ! 100: d_fetchsw(&ptr, &mdb->drAtrb); ! 101: d_fetchuw(&ptr, &mdb->drNmFls); ! 102: d_fetchuw(&ptr, &mdb->drVBMSt); ! 103: d_fetchuw(&ptr, &mdb->drAllocPtr); ! 104: d_fetchuw(&ptr, &mdb->drNmAlBlks); ! 105: d_fetchul(&ptr, &mdb->drAlBlkSiz); ! 106: d_fetchul(&ptr, &mdb->drClpSiz); ! 107: d_fetchuw(&ptr, &mdb->drAlBlSt); ! 108: d_fetchsl(&ptr, &mdb->drNxtCNID); ! 109: d_fetchuw(&ptr, &mdb->drFreeBks); ! 110: ! 111: d_fetchstr(&ptr, mdb->drVN, sizeof(mdb->drVN)); ! 112: ! 113: ASSERT(ptr - b == 64); ! 114: ! 115: d_fetchsl(&ptr, &mdb->drVolBkUp); ! 116: d_fetchsw(&ptr, &mdb->drVSeqNum); ! 117: d_fetchul(&ptr, &mdb->drWrCnt); ! 118: d_fetchul(&ptr, &mdb->drXTClpSiz); ! 119: d_fetchul(&ptr, &mdb->drCTClpSiz); ! 120: d_fetchuw(&ptr, &mdb->drNmRtDirs); ! 121: d_fetchul(&ptr, &mdb->drFilCnt); ! 122: d_fetchul(&ptr, &mdb->drDirCnt); ! 123: ! 124: for (i = 0; i < 8; ++i) ! 125: d_fetchsl(&ptr, &mdb->drFndrInfo[i]); ! 126: ! 127: ASSERT(ptr - b == 124); ! 128: ! 129: d_fetchuw(&ptr, &mdb->drEmbedSigWord); ! 130: d_fetchuw(&ptr, &mdb->drEmbedExtent.xdrStABN); ! 131: d_fetchuw(&ptr, &mdb->drEmbedExtent.xdrNumABlks); ! 132: ! 133: d_fetchul(&ptr, &mdb->drXTFlSize); ! 134: ! 135: for (i = 0; i < 3; ++i) ! 136: { ! 137: d_fetchuw(&ptr, &mdb->drXTExtRec[i].xdrStABN); ! 138: d_fetchuw(&ptr, &mdb->drXTExtRec[i].xdrNumABlks); ! 139: } ! 140: ! 141: ASSERT(ptr - b == 146); ! 142: ! 143: d_fetchul(&ptr, &mdb->drCTFlSize); ! 144: ! 145: for (i = 0; i < 3; ++i) ! 146: { ! 147: d_fetchuw(&ptr, &mdb->drCTExtRec[i].xdrStABN); ! 148: d_fetchuw(&ptr, &mdb->drCTExtRec[i].xdrNumABlks); ! 149: } ! 150: ! 151: ASSERT(ptr - b == 162); ! 152: ! 153: return 0; ! 154: ! 155: fail: ! 156: return -1; ! 157: }
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