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Fixed large file support under Linux. I'm unable to test under Windows.

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Ticket #191. (CVS 790)

FossilOrigin-Name: 9864a1265b5a37c12b0dd8446d81b84c5a3acc43
This commit is contained in:
drh
2002-12-01 02:00:57 +00:00
parent 86bc1c8273
commit d0d006e29c
6 changed files with 228 additions and 21 deletions
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19
src/os.c
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@@ -39,15 +39,17 @@
/*
** Macros for performance tracing. Normally turned off
*/
#if 0
#if 1
static int last_page = 0;
#define SEEK(X) last_page=(X)
#define TRACE1(X) fprintf(stderr,X)
#define TRACE2(X,Y) fprintf(stderr,X,Y)
#define SEEK(X) last_page=(X)
#define TRACE1(X) fprintf(stderr,X)
#define TRACE2(X,Y) fprintf(stderr,X,Y)
#define TRACE3(X,Y,Z) fprintf(stderr,X,Y,Z)
#else
#define SEEK(X)
#define TRACE1(X)
#define TRACE2(X,Y)
#define TRACE3(X,Y,Z)
#endif
@@ -233,7 +235,7 @@ int sqliteOsFileExists(const char *zFilename){
** SQLITE_OK.
**
** On failure, the function returns SQLITE_CANTOPEN and leaves
** *pResulst and *pReadonly unchanged.
** *id and *pReadonly unchanged.
*/
int sqliteOsOpenReadWrite(
const char *zFilename,
@@ -495,6 +497,7 @@ int sqliteOsRead(OsFile *id, void *pBuf, int amt){
#if OS_WIN
DWORD got;
SimulateIOError(SQLITE_IOERR);
TRACE2("READ %d\n", last_page);
if( !ReadFile(id->h, pBuf, amt, &got, 0) ){
got = 0;
}
@@ -528,6 +531,7 @@ int sqliteOsWrite(OsFile *id, const void *pBuf, int amt){
int rc;
DWORD wrote;
SimulateIOError(SQLITE_IOERR);
TRACE2("WRITE %d\n", last_page);
while( amt>0 && (rc = WriteFile(id->h, pBuf, amt, &wrote, 0))!=0 && wrote>0 ){
amt -= wrote;
pBuf = &((char*)pBuf)[wrote];
@@ -551,7 +555,10 @@ int sqliteOsSeek(OsFile *id, off_t offset){
#if OS_WIN
{
LONG upperBits = offset>>32;
SetFilePointer(id->h, offset, &upperBits, FILE_BEGIN);
LONG lowerBits = offset & 0xffffffff;
DWORD rc;
rc = SetFilePointer(id->h, lowerBits, &upperBits, FILE_BEGIN);
TRACE3("SEEK rc=0x%x upper=0x%x\n", rc, upperBits);
}
return SQLITE_OK;
#endif