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VFS fixes for Windows.

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This commit is contained in:
Sandrine Avakian 2016-06-10 10:10:58 +02:00
parent ae235690ff
commit e6ea6151ce
1 changed files with 105 additions and 3 deletions
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108
coreapi/sqlite3_bctbx_vfs.c
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@ -115,7 +115,7 @@ static int sqlite3bctbx_Write(sqlite3_file *p, const void *buf, int count, sqlit
*/
static int sqlite3bctbx_FileSize(sqlite3_file *p, sqlite_int64 *pSize){
int rc; /* Return code from fstat() call */
int64_t rc; /* Return code from fstat() call */
sqlite3_bctbx_file_t *pFile = (sqlite3_bctbx_file_t*) p;
if (pFile->pbctbx_file){
rc = bctbx_file_size(pFile->pbctbx_file);
@ -209,7 +209,9 @@ static int sqlite3bctbx_nolockUnlock(sqlite3_file *pUnused, int unused){
static int sqlite3bctbx_Sync(sqlite3_file *p, int flags){
sqlite3_bctbx_file_t *pFile = (sqlite3_bctbx_file_t*)p;
#if _WIN32
return (FlushFileBuffers(pFile->pbctbx_file->fd) ? SQLITE_OK : SQLITE_IOERR_FSYNC);
int ret;
ret = FlushFileBuffers(pFile->pbctbx_file->h);
return (ret!=0 ? SQLITE_OK : SQLITE_IOERR_FSYNC);
#else
int rc = fsync(pFile->pbctbx_file->fd);
return (rc==0 ? SQLITE_OK : SQLITE_IOERR_FSYNC);
@ -300,7 +302,102 @@ sqlite3_vfs *sqlite3_bctbx_vfs_create(void){
};
return &bctbx_vfs;
}
#if _WIN32
static int sqlite3bctbx_winAccess(
sqlite3_vfs *pVfs, /* Not used on win32 */
const char *zFilename, /* Name of file to check */
int flags, /* Type of test to make on this file */
int *pResOut /* OUT: Result */
){
DWORD attr;
int rc = 0;
//SimulateIOError(return SQLITE_IOERR_ACCESS;);
int cnt = 0;
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
memset(&sAttrData, 0, sizeof(sAttrData));
rc = GetFileAttributesExW((LPCWSTR)zFilename,
GetFileExInfoStandard,
&sAttrData);
if (rc){
/* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file
** as if it does not exist.
*/
if (flags == SQLITE_ACCESS_EXISTS
&& sAttrData.nFileSizeHigh == 0
&& sAttrData.nFileSizeLow == 0){
attr = INVALID_FILE_ATTRIBUTES;
}
else{
attr = sAttrData.dwFileAttributes;
}
}
else{
attr = INVALID_FILE_ATTRIBUTES;
}
switch (flags){
case SQLITE_ACCESS_READ:
case SQLITE_ACCESS_EXISTS:
rc = attr != INVALID_FILE_ATTRIBUTES;
break;
case SQLITE_ACCESS_READWRITE:
rc = attr != INVALID_FILE_ATTRIBUTES &&
(attr & FILE_ATTRIBUTE_READONLY) == 0;
break;
default:
break;
//assert(!"Invalid flags argument");
}
*pResOut = rc;
return SQLITE_OK;
}
static int sqlite3bctbx_winFullPathname(
sqlite3_vfs *pVfs, /* Pointer to vfs object */
const char *zRelative, /* Possibly relative input path */
int nFull, /* Size of output buffer in bytes */
char *zFull){
//LPWSTR zTemp;
//DWORD nByte;
///* If this path name begins with "/X:", where "X" is any alphabetic
//** character, discard the initial "/" from the pathname.
//*/
//if (zRelative[0] == '/' && sqlite3Isalpha(zRelative[1]) && zRelative[2] == ':'){
// zRelative++;
//}
/*nByte = GetFullPathNameW((LPCWSTR)zRelative, 0, 0, 0);
if (nByte == 0){
return SQLITE_CANTOPEN_FULLPATH;
}
nByte += 3;
zTemp = bctbx_malloc(nByte*sizeof(zTemp[0]));
memset(zTemp, 0, nByte*sizeof(zTemp[0]));
if (zTemp == 0){
return SQLITE_IOERR_NOMEM;
}
nByte = GetFullPathNameW((LPCWSTR)zRelative, nByte, zTemp, 0);
if (nByte == 0){
bctbx_free(zTemp);
return SQLITE_CANTOPEN_FULLPATH;
}
if (zTemp){
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zTemp);
bctbx_free(zTemp);
return SQLITE_OK;
/*}
else{
return SQLITE_IOERR_NOMEM;
}*/
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zRelative);
return SQLITE_OK;
}
#endif
void sqlite3_bctbx_vfs_register( int makeDefault){
sqlite3_vfs* pVfsToUse = sqlite3_bctbx_vfs_create();
@ -309,10 +406,15 @@ void sqlite3_bctbx_vfs_register( int makeDefault){
#else
sqlite3_vfs* pDefault = sqlite3_vfs_find("unix-none");
#endif
pVfsToUse->xAccess = pDefault->xAccess;
pVfsToUse->xCurrentTime = pDefault->xCurrentTime;
#if _WIN32
pVfsToUse->xFullPathname = sqlite3bctbx_winFullPathname;
pVfsToUse->xAccess = sqlite3bctbx_winAccess;
#else
pVfsToUse->xAccess = pDefault->xAccess;
pVfsToUse->xFullPathname = pDefault->xFullPathname;
#endif
pVfsToUse->xDelete = pDefault->xDelete;
pVfsToUse->xSleep = pDefault->xSleep;
pVfsToUse->xRandomness = pDefault->xRandomness;