140 lines
6 KiB
C++
140 lines
6 KiB
C++
|
/*++
|
|||
|
|
|
|||
|
|
<EFBFBD> 1998 Seagate Software, Inc. All rights reserved
|
|||
|
|
|
|||
|
|
Module Name:
|
|||
|
|
|
|||
|
|
wsbfile.cpp
|
|||
|
|
|
|||
|
|
Abstract:
|
|||
|
|
|
|||
|
|
This file implements the common Wsb routines dealing with file operations.
|
|||
|
|
|
|||
|
|
Author:
|
|||
|
|
|
|||
|
|
Christopher J. Timmes [ctimmes@avail.com] 23 Jun 1997
|
|||
|
|
|
|||
|
|
Revision History:
|
|||
|
|
|
|||
|
|
Christopher J. Timmes [ctimmes@avail.com] 21 July 1997
|
|||
|
|
|
|||
|
|
- modified function WsbCalcCRCofFile(). Added NT system calls
|
|||
|
|
NTQueryInformationFile and NTSetInformationFile so as to preserve the
|
|||
|
|
input file's timestamp. Until this change this function updated the
|
|||
|
|
file's Date Last Accessed.
|
|||
|
|
|
|||
|
|
Christopher J. Timmes [ctimmes@avail.com] 05 August 1997
|
|||
|
|
|
|||
|
|
- modified function WsbCalcCRCofFile(). Added doFileRead() function, an
|
|||
|
|
extra 'mode' parameter and supporting code to enable WsbCalcCRCofFile()
|
|||
|
|
to support 4 different combinations (modes) of file open and read:
|
|||
|
|
a normal open and sync read, a 'no recall' open and sync read, a 'norecall'
|
|||
|
|
open and async read, and a 'norecall' open and memory-mapped 'read'.
|
|||
|
|
|
|||
|
|
Shawn L. Kaczmarek 15 September 1997
|
|||
|
|
|
|||
|
|
- First set of modifications to 'back out' the file IO wrapper to the CRC
|
|||
|
|
routine. The tsterror.h is now 'out' as well.
|
|||
|
|
|
|||
|
|
Shawn L. Kaczmarek 16 Sept 1997
|
|||
|
|
|
|||
|
|
Moved WsbCalcCRCofFile() and doFileRead() to the item commander class
|
|||
|
|
in hsmivrfy.cpp ( hsmicmdr.h ). These methods provided the file IO wrappers
|
|||
|
|
for the CRC method which is retained in here. The CRC look up table is
|
|||
|
|
externed with an instantiation in the RsCommon.dll.
|
|||
|
|
|
|||
|
|
Shawn L. Kaczmarek 17 Sept 1997
|
|||
|
|
|
|||
|
|
Removed a doFileRead() prototype that remained from prior 'move out' of
|
|||
|
|
functions.
|
|||
|
|
|
|||
|
|
--*/
|
|||
|
|
|
|||
|
|
|
|||
|
|
#include "stdafx.h" // req'd first: common includes
|
|||
|
|
// (including wsb.h, rqd for this)
|
|||
|
|
// (wsb.h includes wsbfile,h, this file's hdr)
|
|||
|
|
|
|||
|
|
// 32-bit CRC table values (256 entries)
|
|||
|
|
unsigned long crc_32_tab[] =
|
|||
|
|
{ /* CRC polynomial 0xedb88320 */
|
|||
|
|
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
|
|||
|
|
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
|
|||
|
|
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
|
|||
|
|
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
|
|||
|
|
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
|
|||
|
|
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
|
|||
|
|
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
|
|||
|
|
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
|
|||
|
|
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
|
|||
|
|
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
|
|||
|
|
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
|
|||
|
|
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
|
|||
|
|
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
|
|||
|
|
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
|
|||
|
|
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
|
|||
|
|
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
|
|||
|
|
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
|
|||
|
|
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
|
|||
|
|
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
|
|||
|
|
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
|
|||
|
|
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
|
|||
|
|
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
|
|||
|
|
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
|
|||
|
|
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
|
|||
|
|
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
|
|||
|
|
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
|
|||
|
|
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
|
|||
|
|
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
|
|||
|
|
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
|
|||
|
|
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
|
|||
|
|
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
|
|||
|
|
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
|
|||
|
|
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
|
|||
|
|
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
|
|||
|
|
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
|
|||
|
|
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
|
|||
|
|
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
|
|||
|
|
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
|
|||
|
|
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
|
|||
|
|
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
|
|||
|
|
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
|
|||
|
|
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
|
|||
|
|
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
HRESULT
|
|||
|
|
WsbCRCReadFile (
|
|||
|
|
IN BYTE* pchCurrent,
|
|||
|
|
IN OUT ULONG* oldcrc32
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
|
|||
|
|
Routine Description:
|
|||
|
|
|
|||
|
|
This routine exists so that any read excpetions triggered by accessing invalid memory
|
|||
|
|
can be properly caught.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
HRESULT hr = S_OK;
|
|||
|
|
|
|||
|
|
// This call can caused an invalid page to be accessed, so it needs to
|
|||
|
|
// be done within an exception handling block. It uses different exception handling,
|
|||
|
|
// so it can not be used in a function with normal try - catch blocks.
|
|||
|
|
|
|||
|
|
__try {
|
|||
|
|
|
|||
|
|
// call CRC algorythm, pass in current byte and present CRC value
|
|||
|
|
CALC_CRC( *pchCurrent, *oldcrc32);
|
|||
|
|
|
|||
|
|
} __except (EXCEPTION_EXECUTE_HANDLER) {
|
|||
|
|
hr = HRESULT_FROM_WIN32(GetExceptionCode()); \
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return(hr);
|
|||
|
|
}
|