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Overview
| Comment: | Fix the windows OS layer so that it returns detailed IOERR error codes. (CVS 3583) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 4b36de46c42e2e42d611b38ff18949be |
| User & Date: | drh 2007-01-09 17:18:19 |
Context
|
2007-01-09
| ||
| 23:13 | Documentation updates prior to version 3.3.10. Among the changes is a fix for ticket #2148 (CVS 3584) check-in: 686beffa user: drh tags: trunk | |
| 17:18 | Fix the windows OS layer so that it returns detailed IOERR error codes. (CVS 3583) check-in: 4b36de46 user: drh tags: trunk | |
| 15:32 | Work around win2k problems so that single-character filenames can be used. Ticket #2151. (CVS 3582) check-in: c4eb2100 user: drh tags: trunk | |
Changes
Changes to src/os_win.c.
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** Read data from a file into a buffer. Return SQLITE_OK if all
** bytes were read successfully and SQLITE_IOERR if anything goes
** wrong.
*/
static int winRead(OsFile *id, void *pBuf, int amt){
DWORD got;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR);
TRACE3("READ %d lock=%d\n", ((winFile*)id)->h, ((winFile*)id)->locktype);
if( !ReadFile(((winFile*)id)->h, pBuf, amt, &got, 0) ){
return SQLITE_IOERR_READ;
}
if( got==(DWORD)amt ){
return SQLITE_OK;
}else{
................................................................................
** Write data from a buffer into a file. Return SQLITE_OK on success
** or some other error code on failure.
*/
static int winWrite(OsFile *id, const void *pBuf, int amt){
int rc = 0;
DWORD wrote;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR);
SimulateDiskfullError(return SQLITE_FULL);
TRACE3("WRITE %d lock=%d\n", ((winFile*)id)->h, ((winFile*)id)->locktype);
assert( amt>0 );
while( amt>0 && (rc = WriteFile(((winFile*)id)->h, pBuf, amt, &wrote, 0))!=0
&& wrote>0 ){
amt -= wrote;
pBuf = &((char*)pBuf)[wrote];
................................................................................
}
/*
** Sync the directory zDirname. This is a no-op on operating systems other
** than UNIX.
*/
int sqlite3WinSyncDirectory(const char *zDirname){
SimulateIOError(return SQLITE_IOERR);
return SQLITE_OK;
}
/*
** Truncate an open file to a specified size
*/
static int winTruncate(OsFile *id, i64 nByte){
LONG upperBits = nByte>>32;
assert( id!=0 );
TRACE3("TRUNCATE %d %lld\n", ((winFile*)id)->h, nByte);
SimulateIOError(return SQLITE_IOERR);
SetFilePointer(((winFile*)id)->h, nByte, &upperBits, FILE_BEGIN);
SetEndOfFile(((winFile*)id)->h);
return SQLITE_OK;
}
/*
** Determine the current size of a file in bytes
*/
static int winFileSize(OsFile *id, i64 *pSize){
DWORD upperBits, lowerBits;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR);
lowerBits = GetFileSize(((winFile*)id)->h, &upperBits);
*pSize = (((i64)upperBits)<<32) + lowerBits;
return SQLITE_OK;
}
/*
** LOCKFILE_FAIL_IMMEDIATELY is undefined on some Windows systems.
................................................................................
pFile->locktype, pFile->sharedLockByte);
type = pFile->locktype;
if( type>=EXCLUSIVE_LOCK ){
UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
if( locktype==SHARED_LOCK && !getReadLock(pFile) ){
/* This should never happen. We should always be able to
** reacquire the read lock */
rc = SQLITE_IOERR;
}
}
if( type>=RESERVED_LOCK ){
UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
}
if( locktype==NO_LOCK && type>=SHARED_LOCK ){
unlockReadLock(pFile);
|
| | | | | | |
996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 .... 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 .... 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 .... 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 |
** Read data from a file into a buffer. Return SQLITE_OK if all
** bytes were read successfully and SQLITE_IOERR if anything goes
** wrong.
*/
static int winRead(OsFile *id, void *pBuf, int amt){
DWORD got;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR_READ);
TRACE3("READ %d lock=%d\n", ((winFile*)id)->h, ((winFile*)id)->locktype);
if( !ReadFile(((winFile*)id)->h, pBuf, amt, &got, 0) ){
return SQLITE_IOERR_READ;
}
if( got==(DWORD)amt ){
return SQLITE_OK;
}else{
................................................................................
** Write data from a buffer into a file. Return SQLITE_OK on success
** or some other error code on failure.
*/
static int winWrite(OsFile *id, const void *pBuf, int amt){
int rc = 0;
DWORD wrote;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR_READ);
SimulateDiskfullError(return SQLITE_FULL);
TRACE3("WRITE %d lock=%d\n", ((winFile*)id)->h, ((winFile*)id)->locktype);
assert( amt>0 );
while( amt>0 && (rc = WriteFile(((winFile*)id)->h, pBuf, amt, &wrote, 0))!=0
&& wrote>0 ){
amt -= wrote;
pBuf = &((char*)pBuf)[wrote];
................................................................................
}
/*
** Sync the directory zDirname. This is a no-op on operating systems other
** than UNIX.
*/
int sqlite3WinSyncDirectory(const char *zDirname){
SimulateIOError(return SQLITE_IOERR_READ);
return SQLITE_OK;
}
/*
** Truncate an open file to a specified size
*/
static int winTruncate(OsFile *id, i64 nByte){
LONG upperBits = nByte>>32;
assert( id!=0 );
TRACE3("TRUNCATE %d %lld\n", ((winFile*)id)->h, nByte);
SimulateIOError(return SQLITE_IOERR_TRUNCATE);
SetFilePointer(((winFile*)id)->h, nByte, &upperBits, FILE_BEGIN);
SetEndOfFile(((winFile*)id)->h);
return SQLITE_OK;
}
/*
** Determine the current size of a file in bytes
*/
static int winFileSize(OsFile *id, i64 *pSize){
DWORD upperBits, lowerBits;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR_FSTAT);
lowerBits = GetFileSize(((winFile*)id)->h, &upperBits);
*pSize = (((i64)upperBits)<<32) + lowerBits;
return SQLITE_OK;
}
/*
** LOCKFILE_FAIL_IMMEDIATELY is undefined on some Windows systems.
................................................................................
pFile->locktype, pFile->sharedLockByte);
type = pFile->locktype;
if( type>=EXCLUSIVE_LOCK ){
UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
if( locktype==SHARED_LOCK && !getReadLock(pFile) ){
/* This should never happen. We should always be able to
** reacquire the read lock */
rc = SQLITE_IOERR_UNLOCK;
}
}
if( type>=RESERVED_LOCK ){
UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
}
if( locktype==NO_LOCK && type>=SHARED_LOCK ){
unlockReadLock(pFile);
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