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/****************************************************************************
* NCSA HDF *
* Software Development Group *
* National Center for Supercomputing Applications *
* University of Illinois at Urbana-Champaign *
* 605 E. Springfield, Champaign IL 61820 *
* *
* For conditions of distribution and use, see the accompanying *
* hdf/COPYING file. *
* *
****************************************************************************/
/* $Id$ */
/*
* This file contains macros & information for file access
*/
#ifndef _H5Fprivate_H
#define _H5Fprivate_H
#include <H5Fpublic.h>
/* Private headers needed by this file */
#include <H5private.h>
/* Maximum size of boot-block buffer */
#define H5F_BOOTBLOCK_SIZE 1024
/* Define the HDF5 file signature */
#define H5F_SIGNATURE "\211HDF\r\n\032\n"
#define H5F_SIGNATURE_LEN 8
/* size of size_t and off_t as they exist on disk */
#define H5F_SIZEOF_OFFSET(F) ((F)->shared->file_create_parms.offset_size)
#define H5F_SIZEOF_SIZE(F) ((F)->shared->file_create_parms.length_size)
/*
* File open flags.
*/
#define H5F_ACC_WRITE 0x0001 /* Open file for read/write access */
#define H5F_ACC_CREAT 0x0002 /* Create non-existing files */
#define H5F_ACC_EXCL 0x0004 /* Fail if file exists */
#define H5F_ACC_TRUNC 0x0008 /* Truncate existing file */
/*
* Define the low-level file interface.
*/
#if FILELIB == POSIXBUFIO
typedef FILE *hdf_file_t;
# ifdef VMS
# define H5F_OPEN(p, a) (((a) & H5ACC_WRITE) ? \
fopen ((p), "r+", "mbc=64") : \
fopen ((p), "r", "mbc=64"))
# define H5F_CREATE(p) fopen ((p), "w+", "mbc=64")
# elif defined SUN && defined (__GNUC__)
# define H5F_OPEN(p, a) (((a) & H5ACC_WRITE) ? \
fopen ((p), "r+") : \
fopen ((p), "r"))
# define H5F_CREATE(p) fopen ((p), "w+")
# else
# define H5F_OPEN(p, a) (((a) & H5ACC_WRITE) ? \
fopen ((p), "rb+") : \
fopen((p), "rb"))
# define H5F_CREATE(p) fopen((p), "wb+")
# endif
# define H5F_READ(f, b, n) (((size_t)(n) == (size_t)fread ((b), 1, \
(size_t)(n), \
(f))) ? \
SUCCEED : FAIL)
# define H5F_WRITE(f, b, n) (((size_t)(n) == (size_t)fwrite ((b), 1, \
(size_t)(n), \
(f))) ? \
SUCCEED : FAIL)
# define H5F_CLOSE(f) fclose (f)
# define H5F_FLUSH(f) (0==fflush (f) ? SUCCEED : FAIL)
# define H5F_SEEK(f,o) (0==fseek ((f), (long)(o), SEEK_SET) ? \
SUCCEED : FAIL)
# define H5F_SEEK_CUR(f,o) (0==fseek ((f), (long)(o), SEEK_CUR) ? \
SUCCEED : FAIL)
# define H5F_SEEKEND(f) (0==fseek ((f), (long)0, SEEK_END) ? \
SUCCEED : FAIL)
# define H5F_TELL(f) ftell (f)
# define H5F_OPENERR(f) (!f)
# define H5F_INVALID_FILE ((FILE *)NULL)
#elif FILELIB == POSIXUNBUFIO
typedef int hdf_file_t;
# define H5F_OPEN(p, a) (((a) & H5ACC_WRITE) ? \
open ((p), O_RDWR) : \
open ((p), O_RDONLY))
# define H5F_CREATE(p) open ((p), O_RDWR | O_CREAT | O_TRUNC, 0666)
# define H5F_CLOSE(f) close(f)
# define H5F_FLUSH(f) SUCCEED
# define H5F_READ(f, b, n) (((n)==read ((f), (char*)(b), (n))) ? \
SUCCEED : FAIL)
# define H5F_WRITE(f, b, n) (((n)==write ((f), (char*)(b), (n))) ? \
SUCCEED : FAIL)
# define H5F_SEEK(f, o) (lseek ((f), (off_t)(o), SEEK_SET)<0 ? \
FAIL : SUCCEED)
# define H5F_SEEKEND(f) (lseek ((f), (off_t)0, SEEK_END)<0 ? \
FAIL : SUCCEED)
# define H5F_TELL(f) lseek ((f), (off_t)0, SEEK_CUR)
# define H5F_OPENERR(f) ((f) < 0)
# define H5F_INVALID_FILE (-1)
#elif FILELIB == MACIO
typedef short hdf_file_t;
# define H5F_OPEN(x,y) mopen (x, y)
# define H5F_CREATE(name) mopen (name, H5ACC_CREATE)
# define H5F_CLOSE(x) mclose (x)
# define H5F_FLUSH(a) SUCCEED
# define H5F_READ(a,b,c) mread (a, (char*)b, (int32)c)
# define H5F_WRITE(a,b,c) mwrite (a, (char*)b, (int32)c)
# define H5F_SEEK(x,y) mlseek (x, (int32)y, 0)
# define H5F_SEEKEND(x) mlseek (x, 0L, 2)
# define H5F_TELL(x) mlseek (x, 0L, 1)
# define H5F_OPENERR(f) (f < 0)
# define H5F_INVALID_FILE (-1)
#elif FILELIB == WINNTIO
typedef HFILE hdf_file_t;
# define H5F_OPEN(p, a) (((a) & H5ACC_WRITE) ? \
_lopen ((p), OF_READWRITE) : \
_lopen ((p), OF_READ))
# define H5F_CREATE(p) _lcreat ((p), 0)
# define H5F_READ(f, b, n) (((int32)(n) == _hread ((f), (b), (n))) ? \
SUCCEED : FAIL)
# define H5F_WRITE(f, b, n) (((int32)(n) == _hwrite ((f), (b), (n))) ? \
SUCCEED : FAIL)
# define H5F_CLOSE(f) (_lclose(f)==0 ? SUCCEED : FAIL)
# define H5F_FLUSH(f) 0
# define H5F_SEEK(f, o) _llseek ((f), (long)(o), 0)
# define H5F_SEEKEND(f) _llseek ((f), (long)0, 2)
# define H5F_TELL(f) _llseek ((f), 0l, 1)
# define H5F_OPENERR(f) ((f) == (HFILE)HFILE_ERROR)
# define H5F_INVALID_FILE ((HFILE)HFILE_ERROR)
#elif FILELIB == PAGEBUFIO
# include "fmpio.h"
typedef MPFILE *hdf_file_t;
# define H5F_OPEN(p, a) MPopen ((p), (a))
# define H5F_CREATE(p) MPopen ((p), H5ACC_CREATE)
# define H5F_CLOSE(f) MPclose (f)
# define H5F_FLUSH(f) MPflush (f)
# define H5F_READ(f, b, n) MPread ((f), (char *)(b), (n))
# define H5F_WRITE(f, b, n) MPwrite ((f), (char *)(b), (n))
# define H5F_SEEK(f, o) MPseek ((f), (off_t)(o), SEEK_SET)
# define H5F_SEEKEND(f) MPseek ((f), (off_t)0, SEEK_END)
# define H5F_TELL(f) MPseek ((f), (off_t)0, SEEK_CUR)
# define H5F_OPENERR(f) ((f) == (MPFILE *)NULL)
# define H5F_INVALID_FILE ((MPFILE *)NULL)
#endif
/*
* Encode and decode macros for file meta-data.
* Currently, all file meta-data is little-endian.
*/
/* For non-little-endian platforms, encode each byte by itself */
#ifdef WORDS_BIGENDIAN
# define INT16ENCODE(p, i) { \
*(p) = (uint8)( (uintn)(i) & 0xff); (p)++; \
*(p) = (uint8)(((uintn)(i) >> 8) & 0xff); (p)++; \
}
# define UINT16ENCODE(p, i) { \
*(p) = (uint8)( (i) & 0xff); (p)++; \
*(p) = (uint8)(((uintn)(i) >> 8) & 0xff); (p)++; \
}
# define INT32ENCODE(p, i) { \
*(p) = (uint8)( (uint32)(i) & 0xff); (p)++; \
*(p) = (uint8)(((uint32)(i) >> 8) & 0xff); (p)++; \
*(p) = (uint8)(((uint32)(i) >> 16) & 0xff); (p)++; \
*(p) = (uint8)(((uint32)(i) >> 24) & 0xff); (p)++; \
}
# define UINT32ENCODE(p, i) { \
*(p) = (uint8)( (i) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 8) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 16) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 24) & 0xff); (p)++; \
}
# define INT64ENCODE(p, i) { \
*(p) = (uint8)( (uint64)(i) & 0xff); (p)++; \
*(p) = (uint8)(((uint64)(i) >> 8) & 0xff); (p)++; \
*(p) = (uint8)(((uint64)(i) >> 16) & 0xff); (p)++; \
*(p) = (uint8)(((uint64)(i) >> 24) & 0xff); (p)++; \
if (sizeof(int64)>4) { \
*(p) = (uint8)(((uint64)(i) >> 32) & 0xff); (p)++; \
*(p) = (uint8)(((uint64)(i) >> 40) & 0xff); (p)++; \
*(p) = (uint8)(((uint64)(i) >> 48) & 0xff); (p)++; \
*(p) = (uint8)(((uint64)(i) >> 56) & 0xff); (p)++; \
} else if ((i)<0) { \
*(p)++ = 0xff; \
*(p)++ = 0xff; \
*(p)++ = 0xff; \
*(p)++ = 0xff; \
} else { \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
} \
}
# define UINT64ENCODE(p, i) { \
*(p) = (uint8)( (i) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 8) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 16) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 24) & 0xff); (p)++; \
if (sizeof(uint64)>4) { \
*(p) = (uint8)(((i) >> 32) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 40) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 48) & 0xff); (p)++; \
*(p) = (uint8)(((i) >> 56) & 0xff); (p)++; \
} else { \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
} \
}
# define INT16DECODE(p, i) { \
(i) = (int16)((*(p) & 0xff)); (p)++; \
(i) |= (int16)((*(p) & 0xff) << 8); (p)++; \
}
# define UINT16DECODE(p, i) { \
(i) = (uint16) (*(p) & 0xff); (p)++; \
(i) |= (uint16)((*(p) & 0xff) << 8); (p)++; \
}
# define INT32DECODE(p, i) { \
(i) = ( *(p) & 0xff); (p)++; \
(i) |= ((int32)(*(p) & 0xff) << 8); (p)++; \
(i) |= ((int32)(*(p) & 0xff) << 16); (p)++; \
(i) |= ((int32)(*(p) & 0xff) << 24); (p)++; \
}
# define UINT32DECODE(p, i) { \
(i) = (uint32)(*(p) & 0xff); (p)++; \
(i) |= ((uint32)(*(p) & 0xff) << 8); (p)++; \
(i) |= ((uint32)(*(p) & 0xff) << 16); (p)++; \
(i) |= ((uint32)(*(p) & 0xff) << 24); (p)++; \
}
# define INT64DECODE(p, i) { \
(i) = ( *(p) & 0xff); (p)++; \
(i) |= ((int64)(*(p) & 0xff) << 8); (p)++; \
(i) |= ((int64)(*(p) & 0xff) << 16); (p)++; \
(i) |= ((int64)(*(p) & 0xff) << 24); (p)++; \
if (sizeof(int64)>4) { \
(i) |= ((int64)(*(p) & 0xff) << 32); (p)++; \
(i) |= ((int64)(*(p) & 0xff) << 40); (p)++; \
(i) |= ((int64)(*(p) & 0xff) << 48); (p)++; \
(i) |= ((int64)(*(p) & 0xff) << 56); (p)++; \
} else { \
(p) += 4; \
} \
}
# define UINT64DECODE(p, i) { \
(i) = (uint64)(*(p) & 0xff); (p)++; \
(i) |= ((uint64)(*(p) & 0xff) << 8); (p)++; \
(i) |= ((uint64)(*(p) & 0xff) << 16); (p)++; \
(i) |= ((uint64)(*(p) & 0xff) << 24); (p)++; \
if (sizeof(uint64)>4) { \
(i) |= ((uint64)(*(p) & 0xff) << 32); (p)++; \
(i) |= ((uint64)(*(p) & 0xff) << 40); (p)++; \
(i) |= ((uint64)(*(p) & 0xff) << 48); (p)++; \
(i) |= ((uint64)(*(p) & 0xff) << 56); (p)++; \
} else { \
(p) += 4; \
} \
}
#else
/* For little-endian platforms, make the compiler do the work */
# define INT16ENCODE(p, i) { *((int16 *)(p)) = (int16)(i); (p)+=2; }
# define UINT16ENCODE(p, i) { *((uint16 *)(p)) = (uint16)(i); (p)+=2; }
# define INT32ENCODE(p, i) { *((int32 *)(p)) = (int32)(i); (p)+=4; }
# define UINT32ENCODE(p, i) { *((uint32 *)(p)) = (uint32)(i); (p)+=4; }
# define INT64ENCODE(p, i) { \
*((int64 *)(p)) = (int64)(i); \
(p) += sizeof(int64); \
if (4==sizeof(int64)) { \
*(p)++ = (i)<0?0xff:0x00; \
*(p)++ = (i)<0?0xff:0x00; \
*(p)++ = (i)<0?0xff:0x00; \
*(p)++ = (i)<0?0xff:0x00; \
} \
}
# define UINT64ENCODE(p, i) { \
*((uint64 *)(p)) = (uint64)(i); \
(p) += sizeof(uint64); \
if (4==sizeof(uint64)) { \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
*(p)++ = 0x00; \
} \
}
# define INT16DECODE(p, i) { (i) = (int16)(*(const int16 *)(p)); (p)+=2; }
# define UINT16DECODE(p, i) { (i) = (uint16)(*(const uint16 *)(p)); (p)+=2; }
# define INT32DECODE(p, i) { (i) = (int32)(*(const int32 *)(p)); (p)+=4; }
# define UINT32DECODE(p, i) { (i) = (uint32)(*(const uint32 *)(p)); (p)+=4; }
# define INT64DECODE(p, i) { (i) = (int64)(*(const int64 *)(p)); (p)+=8; }
# define UINT64DECODE(p, i) { (i) = (uint64)(*(const uint64 *)(p)); (p)+=8; }
#endif
#define NBYTEENCODE(d, s, n) { HDmemcpy(d,s,n); p+=n }
/* Note! the NBYTEDECODE macro is backwards from the memcpy() routine, */
/* in the spirit of the other DECODE macros */
#define NBYTEDECODE(s, d, n) { HDmemcpy(d,s,n); p+=n }
/*
* File-creation template information structure
*/
typedef struct {
uintn userblock_size; /* Size of the file user block in bytes */
uintn sym_leaf_k; /* 1/2 rank for symbol table leaf nodes */
uintn btree_k[8]; /* 1/2 rank for btree internal nodes */
uint8 offset_size; /* Number of bytes for offsets */
uint8 length_size; /* Number of bytes for lengths */
uint8 bootblock_ver; /* Version # of the bootblock */
uint8 smallobject_ver; /* Version # of the small-object heap */
uint8 freespace_ver; /* Version # of the free-space information */
uint8 objectdir_ver; /* Version # of the object directory format */
uint8 sharedheader_ver; /* Version # of the shared header format */
} file_create_temp_t;
/*
* These things make a file unique.
*/
typedef struct H5F_search_t {
dev_t dev; /* Device number containing file */
ino_t ino; /* Unique file number on device */
} H5F_search_t;
/* For determining what the last file operation was */
typedef enum
{
OP_UNKNOWN = 0, /* Don't know what the last operation was (after fopen frex) */
OP_SEEK, /* Last operation was a seek */
OP_WRITE, /* Last operation was a write */
OP_READ /* Last operation was a read */
}
H5F_fileop_t;
/*
* Define the structure to store the file information for HDF5 files. One of
* these structures is allocated per file, not per H5Fopen().
*/
typedef struct H5F_file_t {
/* Seek caching info */
haddr_t f_cur_off; /* Current location in the file */
H5F_fileop_t last_op; /* the last file operation performed */
H5F_search_t key; /* The key for looking up files */
uintn flags; /* Access Permissions for file */
hdf_file_t file_handle; /* File handle for actual I/O */
uintn nrefs; /* Ref count for times file is opened */
uint32 consist_flags; /* File Consistency Flags */
haddr_t smallobj_off; /* Offset of small-obj heap within the file */
haddr_t freespace_off; /* Offset of free-space info within the file */
size_t logical_len; /* Logical length of file */
struct H5AC_t *cache; /* The object cache */
file_create_temp_t file_create_parms; /* File-creation template */
#ifdef LATER
file_access_temp_t file_access_parms; /* File-access template */
#endif
struct H5G_entry_t *root_sym; /* Root symbol table entry */
uintn nshadows; /* Size of shadow hash table */
struct H5G_hash_t **shadow; /* The shadow hash table */
} H5F_file_t;
/*
* This is the top-level file descriptor. One of these structures is
* allocated every time H5Fopen() is called although they may contain
* pointers to shared H5F_file_t structs.
*/
typedef struct H5F_t {
uintn intent; /* The flags passed to H5F_open() */
char *name; /* Name used to open file */
H5F_file_t *shared; /* The shared file info */
} H5F_t;
#ifdef NOT_YET
#define H5F_encode_offset(f,p,o) (H5F_SIZEOF_OFFSET(f)==4 ? UINT32ENCODE(p,o) \
: H5F_SIZEOF_OFFSET(f)==8 ? UINT64ENCODE(p,o) \
: H5F_SIZEOF_OFFSET(f)==2 ? UINT16ENCODE(p,o) \
: H5FPencode_unusual_offset(f,&(p),(uint8 *)&(o)))
#else /* NOT_YET */
#define H5F_encode_offset(f,p,o) switch(H5F_SIZEOF_OFFSET(f)) { case 4: UINT32ENCODE(p,o); break;\
case 8: UINT64ENCODE(p,o); break;\
case 2: UINT16ENCODE(p,o); break;}
#endif /* NOT_YET */
#define H5F_decode_offset(f,p,o) \
switch (H5F_SIZEOF_OFFSET (f)) { \
case 4: \
UINT32DECODE (p, o); \
break; \
case 8: \
UINT64DECODE (p, o); \
break; \
case 2: \
UINT16DECODE (p, o); \
break; \
}
#ifdef NOT_YET
#define H5F_encode_length(f,p,l) (H5F_SIZEOF_SIZE(f)==4 ? UINT32ENCODE(p,l) \
: H5F_SIZEOF_SIZE(f)==8 ? UINT64ENCODE(p,l) \
: H5F_SIZEOF_SIZE(f)==2 ? UINT16ENCODE(p,l) : H5FPencode_unusual_length(f,&(p),(uint8 *)&(l)))
#else
#define H5F_encode_length(f,p,l) \
switch(H5F_SIZEOF_SIZE(f)) { \
case 4: UINT32ENCODE(p,l); break; \
case 8: UINT64ENCODE(p,l); break; \
case 2: UINT16ENCODE(p,l); break; \
}
#endif
#define H5F_decode_length(f,p,l) \
switch(H5F_SIZEOF_SIZE(f)) { \
case 4: UINT32DECODE(p,l); break; \
case 8: UINT64DECODE(p,l); break; \
case 2: UINT16DECODE(p,l); break; \
}
/* Private functions, not part of the publicly documented API */
void H5F_encode_length_unusual(const H5F_t *f, uint8 **p, uint8 *l);
void H5F_encode_offset_unusual(const H5F_t *f, uint8 **p, uint8 *o);
herr_t H5F_block_read (H5F_t *f, haddr_t addr, size_t size, void *buf);
herr_t H5F_block_write (H5F_t *f, haddr_t addr, size_t size, void *buf);
herr_t H5F_debug (H5F_t *f, haddr_t addr, FILE *stream, intn indent,
intn fwidth);
#endif
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