--- /dev/null
+/*
+ * libhfs - library for reading and writing Macintosh HFS volumes
+ * Copyright (C) 1996-1998 Robert Leslie
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ * $Id: libhfs.h,v 1.7 1998/11/02 22:09:02 rob Exp $
+ */
+
+# include "hfs.h"
+# include "apple.h"
+
+# define ERROR(code, str) \
+ do { hfs_error = (str), errno = (code); goto fail; } while (0)
+
+# ifdef DEBUG
+# define ASSERT(cond) do { if (! (cond)) abort(); } while (0)
+# else
+# define ASSERT(cond) /* nothing */
+# endif
+
+# define SIZE(type, n) ((size_t) (sizeof(type) * (n)))
+# define ALLOC(type, n) ((type *) malloc(SIZE(type, n)))
+# define ALLOCX(type, n) ((n) ? ALLOC(type, n) : (type *) 0)
+# define FREE(ptr) ((ptr) ? (void) free((void *) ptr) : (void) 0)
+
+# define REALLOC(ptr, type, n) \
+ ((type *) ((ptr) ? realloc(ptr, SIZE(type, n)) : malloc(SIZE(type, n))))
+# define REALLOCX(ptr, type, n) \
+ ((n) ? REALLOC(ptr, type, n) : (FREE(ptr), (type *) 0))
+
+# define BMTST(bm, num) \
+ (((const byte *) (bm))[(num) >> 3] & (0x80 >> ((num) & 0x07)))
+# define BMSET(bm, num) \
+ (((byte *) (bm))[(num) >> 3] |= (0x80 >> ((num) & 0x07)))
+# define BMCLR(bm, num) \
+ (((byte *) (bm))[(num) >> 3] &= ~(0x80 >> ((num) & 0x07)))
+
+# define STRINGIZE(x) #x
+# define STR(x) STRINGIZE(x)
+
+typedef unsigned char byte;
+typedef byte block[HFS_BLOCKSZ];
+
+typedef struct _bucket_ {
+ int flags; /* bit flags */
+ unsigned int count; /* number of times this block is requested */
+
+ unsigned long bnum; /* logical block number */
+ block *data; /* pointer to block contents */
+
+ struct _bucket_ *cnext; /* next bucket in cache chain */
+ struct _bucket_ *cprev; /* previous bucket in cache chain */
+
+ struct _bucket_ *hnext; /* next bucket in hash chain */
+ struct _bucket_ **hprev; /* previous bucket's pointer to this bucket */
+} bucket;
+
+# define HFS_BUCKET_INUSE 0x01
+# define HFS_BUCKET_DIRTY 0x02
+
+# define HFS_CACHESZ 128
+# define HFS_HASHSZ 32
+# define HFS_BLOCKBUFSZ 16
+
+typedef struct {
+ struct _hfsvol_ *vol; /* volume to which cache belongs */
+ bucket *tail; /* end of bucket chain */
+
+ unsigned int hits; /* number of cache hits */
+ unsigned int misses; /* number of cache misses */
+
+ bucket chain[HFS_CACHESZ]; /* cache bucket chain */
+ bucket *hash[HFS_HASHSZ]; /* hash table for bucket chain */
+
+ block pool[HFS_CACHESZ]; /* physical blocks in cache */
+} bcache;
+
+# define HFS_MAP1SZ 256
+# define HFS_MAPXSZ 492
+
+# define HFS_NODEREC(nd, rnum) ((nd).data + (nd).roff[rnum])
+# define HFS_RECLEN(nd, rnum) ((nd).roff[(rnum) + 1] - (nd).roff[rnum])
+
+# define HFS_RECKEYLEN(ptr) (*(const byte *) (ptr))
+# define HFS_RECKEYSKIP(ptr) ((size_t) ((1 + HFS_RECKEYLEN(ptr) + 1) & ~1))
+# define HFS_RECDATA(ptr) ((ptr) + HFS_RECKEYSKIP(ptr))
+
+# define HFS_SETKEYLEN(ptr, x) (*(byte *) (ptr) = (x))
+
+# define HFS_CATDATALEN sizeof(CatDataRec)
+# define HFS_EXTDATALEN sizeof(ExtDataRec)
+# define HFS_MAX_DATALEN (HFS_CATDATALEN > HFS_EXTDATALEN ? \
+ HFS_CATDATALEN : HFS_EXTDATALEN)
+
+# define HFS_CATKEYLEN sizeof(CatKeyRec)
+# define HFS_EXTKEYLEN sizeof(ExtKeyRec)
+# define HFS_MAX_KEYLEN (HFS_CATKEYLEN > HFS_EXTKEYLEN ? \
+ HFS_CATKEYLEN : HFS_EXTKEYLEN)
+
+# define HFS_MAX_CATRECLEN (HFS_CATKEYLEN + HFS_CATDATALEN)
+# define HFS_MAX_EXTRECLEN (HFS_EXTKEYLEN + HFS_EXTDATALEN)
+# define HFS_MAX_RECLEN (HFS_MAX_KEYLEN + HFS_MAX_DATALEN)
+
+# define HFS_SIGWORD 0x4244
+# define HFS_SIGWORD_MFS ((Integer) 0xd2d7)
+
+# define HFS_ATRB_BUSY (1 << 6)
+# define HFS_ATRB_HLOCKED (1 << 7)
+# define HFS_ATRB_UMOUNTED (1 << 8)
+# define HFS_ATRB_BBSPARED (1 << 9)
+# define HFS_ATRB_BVINCONSIS (1 << 11)
+# define HFS_ATRB_COPYPROT (1 << 14)
+# define HFS_ATRB_SLOCKED (1 << 15)
+
+struct _hfsfile_ {
+ struct _hfsvol_ *vol; /* pointer to volume descriptor */
+ unsigned long parid; /* parent directory ID of this file */
+ char name[HFS_MAX_FLEN + 1]; /* catalog name of this file */
+ CatDataRec cat; /* catalog information */
+ ExtDataRec ext; /* current extent record */
+ unsigned int fabn; /* starting file allocation block number */
+ int fork; /* current selected fork for I/O */
+ unsigned long pos; /* current file seek pointer */
+ int flags; /* bit flags */
+
+ struct _hfsfile_ *prev;
+ struct _hfsfile_ *next;
+};
+
+# define HFS_FILE_UPDATE_CATREC 0x01
+
+# define HFS_MAX_NRECS 35 /* maximum based on minimum record size */
+
+typedef struct _node_ {
+ struct _btree_ *bt; /* btree to which this node belongs */
+ unsigned long nnum; /* node index */
+ NodeDescriptor nd; /* node descriptor */
+ int rnum; /* current record index */
+ UInteger roff[HFS_MAX_NRECS + 1];
+ /* record offsets */
+ block data; /* raw contents of node */
+} node;
+
+struct _hfsdir_ {
+ struct _hfsvol_ *vol; /* associated volume */
+ unsigned long dirid; /* directory ID of interest (or 0) */
+
+ node n; /* current B*-tree node */
+ struct _hfsvol_ *vptr; /* current volume pointer */
+
+ struct _hfsdir_ *prev;
+ struct _hfsdir_ *next;
+};
+
+typedef void (*keyunpackfunc)(const byte *, void *);
+typedef int (*keycomparefunc)(const void *, const void *);
+
+typedef struct _btree_ {
+ hfsfile f; /* subset file information */
+ node hdrnd; /* header node */
+ BTHdrRec hdr; /* header record */
+ byte *map; /* usage bitmap */
+ unsigned long mapsz; /* number of bytes in bitmap */
+ int flags; /* bit flags */
+
+ keyunpackfunc keyunpack; /* key unpacking function */
+ keycomparefunc keycompare; /* key comparison function */
+} btree;
+
+# define HFS_BT_UPDATE_HDR 0x01
+
+struct _hfsvol_ {
+ int os_fd; /* OS-dependent private descriptor data */
+ int flags; /* bit flags */
+
+ int pnum; /* ordinal HFS partition number */
+ unsigned long vstart; /* logical block offset to start of volume */
+ unsigned long vlen; /* number of logical blocks in volume */
+ unsigned int lpa; /* number of logical blocks per allocation block */
+
+ bcache *cache; /* cache of recently used blocks */
+
+ MDB mdb; /* master directory block */
+ block *vbm; /* volume bitmap */
+ unsigned short vbmsz; /* number of blocks in bitmap */
+
+ btree ext; /* B*-tree control block for extents overflow file */
+ btree cat; /* B*-tree control block for catalog file */
+
+ unsigned long cwd; /* directory id of current working directory */
+
+ int refs; /* number of external references to this volume */
+ hfsfile *files; /* list of open files */
+ hfsdir *dirs; /* list of open directories */
+
+ struct _hfsvol_ *prev;
+ struct _hfsvol_ *next;
+};
+
+# define HFS_VOL_OPEN 0x0001
+# define HFS_VOL_MOUNTED 0x0002
+# define HFS_VOL_READONLY 0x0004
+# define HFS_VOL_USINGCACHE 0x0008
+
+# define HFS_VOL_UPDATE_MDB 0x0010
+# define HFS_VOL_UPDATE_ALTMDB 0x0020
+# define HFS_VOL_UPDATE_VBM 0x0040
+
+# define HFS_VOL_OPT_MASK 0xff00
+
+extern hfsvol *hfs_mounts;
Code Review / kvmfornfv.git / blobdiff