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-rw-r--r--src/os_win.c421
1 files changed, 271 insertions, 150 deletions
diff --git a/src/os_win.c b/src/os_win.c
index 10c431644..89e64aa43 100644
--- a/src/os_win.c
+++ b/src/os_win.c
@@ -30,7 +30,7 @@
** available in Windows platforms based on the NT kernel.
*/
#if !SQLITE_OS_WINNT && !defined(SQLITE_OMIT_WAL)
-# error "WAL mode requires support from the Windows NT kernel, compile\
+# error "WAL mode requires support from the Windows NT kernel, compile\
with SQLITE_OMIT_WAL."
#endif
@@ -51,6 +51,66 @@
#endif
/*
+** Maximum pathname length (in chars) for Win32. This should normally be
+** MAX_PATH.
+*/
+#ifndef SQLITE_WIN32_MAX_PATH_CHARS
+# define SQLITE_WIN32_MAX_PATH_CHARS (MAX_PATH)
+#endif
+
+/*
+** Maximum pathname length (in chars) for WinNT. This should normally be
+** 32767.
+*/
+#ifndef SQLITE_WINNT_MAX_PATH_CHARS
+# define SQLITE_WINNT_MAX_PATH_CHARS (32767)
+#endif
+
+/*
+** Maximum pathname length (in bytes) for Win32. The MAX_PATH macro is in
+** characters, so we allocate 3 bytes per character assuming worst-case of
+** 4-bytes-per-character for UTF8.
+*/
+#ifndef SQLITE_WIN32_MAX_PATH_BYTES
+# define SQLITE_WIN32_MAX_PATH_BYTES (SQLITE_WIN32_MAX_PATH_CHARS*4)
+#endif
+
+/*
+** Maximum pathname length (in bytes) for WinNT. This should normally be
+** 32767 * sizeof(WCHAR).
+*/
+#ifndef SQLITE_WINNT_MAX_PATH_BYTES
+# define SQLITE_WINNT_MAX_PATH_BYTES \
+ (sizeof(WCHAR) * SQLITE_WINNT_MAX_PATH_CHARS)
+#endif
+
+/*
+** Maximum error message length (in chars) for WinRT.
+*/
+#ifndef SQLITE_WIN32_MAX_ERRMSG_CHARS
+# define SQLITE_WIN32_MAX_ERRMSG_CHARS (1024)
+#endif
+
+/*
+** Returns non-zero if the character should be treated as a directory
+** separator.
+*/
+#ifndef winIsDirSep
+# define winIsDirSep(a) (((a) == '/') || ((a) == '\\'))
+#endif
+
+/*
+** Returns the string that should be used as the directory separator.
+*/
+#ifndef winGetDirDep
+# ifdef __CYGWIN__
+# define winGetDirDep() "/"
+# else
+# define winGetDirDep() "\\"
+# endif
+#endif
+
+/*
** Do we need to manually define the Win32 file mapping APIs for use with WAL
** mode (e.g. these APIs are available in the Windows CE SDK; however, they
** are not present in the header file)?
@@ -1057,11 +1117,11 @@ void sqlite3_win32_sleep(DWORD milliseconds){
** the LockFileEx() API.
*/
#if SQLITE_OS_WINCE || SQLITE_OS_WINRT
-# define isNT() (1)
+# define osIsNT() (1)
#elif !defined(SQLITE_WIN32_HAS_WIDE)
-# define isNT() (0)
+# define osIsNT() (0)
#else
- static int isNT(void){
+ static int osIsNT(void){
if( sqlite3_os_type==0 ){
OSVERSIONINFOA sInfo;
sInfo.dwOSVersionInfoSize = sizeof(sInfo);
@@ -1272,7 +1332,7 @@ void sqlite3MemSetDefault(void){
**
** Space to hold the returned string is obtained from malloc.
*/
-static LPWSTR utf8ToUnicode(const char *zFilename){
+static LPWSTR winUtf8ToUnicode(const char *zFilename){
int nChar;
LPWSTR zWideFilename;
@@ -1297,7 +1357,7 @@ static LPWSTR utf8ToUnicode(const char *zFilename){
** Convert Microsoft Unicode to UTF-8. Space to hold the returned string is
** obtained from sqlite3_malloc().
*/
-static char *unicodeToUtf8(LPCWSTR zWideFilename){
+static char *winUnicodeToUtf8(LPCWSTR zWideFilename){
int nByte;
char *zFilename;
@@ -1325,7 +1385,7 @@ static char *unicodeToUtf8(LPCWSTR zWideFilename){
** Space to hold the returned string is obtained
** from sqlite3_malloc.
*/
-static LPWSTR mbcsToUnicode(const char *zFilename){
+static LPWSTR winMbcsToUnicode(const char *zFilename){
int nByte;
LPWSTR zMbcsFilename;
int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
@@ -1355,7 +1415,7 @@ static LPWSTR mbcsToUnicode(const char *zFilename){
** Space to hold the returned string is obtained from
** sqlite3_malloc().
*/
-static char *unicodeToMbcs(LPCWSTR zWideFilename){
+static char *winUnicodeToMbcs(LPCWSTR zWideFilename){
int nByte;
char *zFilename;
int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
@@ -1385,11 +1445,11 @@ char *sqlite3_win32_mbcs_to_utf8(const char *zFilename){
char *zFilenameUtf8;
LPWSTR zTmpWide;
- zTmpWide = mbcsToUnicode(zFilename);
+ zTmpWide = winMbcsToUnicode(zFilename);
if( zTmpWide==0 ){
return 0;
}
- zFilenameUtf8 = unicodeToUtf8(zTmpWide);
+ zFilenameUtf8 = winUnicodeToUtf8(zTmpWide);
sqlite3_free(zTmpWide);
return zFilenameUtf8;
}
@@ -1402,11 +1462,11 @@ char *sqlite3_win32_utf8_to_mbcs(const char *zFilename){
char *zFilenameMbcs;
LPWSTR zTmpWide;
- zTmpWide = utf8ToUnicode(zFilename);
+ zTmpWide = winUtf8ToUnicode(zFilename);
if( zTmpWide==0 ){
return 0;
}
- zFilenameMbcs = unicodeToMbcs(zTmpWide);
+ zFilenameMbcs = winUnicodeToMbcs(zTmpWide);
sqlite3_free(zTmpWide);
return zFilenameMbcs;
}
@@ -1436,7 +1496,7 @@ int sqlite3_win32_set_directory(DWORD type, LPCWSTR zValue){
if( ppDirectory ){
char *zValueUtf8 = 0;
if( zValue && zValue[0] ){
- zValueUtf8 = unicodeToUtf8(zValue);
+ zValueUtf8 = winUnicodeToUtf8(zValue);
if ( zValueUtf8==0 ){
return SQLITE_NOMEM;
}
@@ -1449,11 +1509,11 @@ int sqlite3_win32_set_directory(DWORD type, LPCWSTR zValue){
}
/*
-** The return value of getLastErrorMsg
+** The return value of winGetLastErrorMsg
** is zero if the error message fits in the buffer, or non-zero
** otherwise (if the message was truncated).
*/
-static int getLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
+static int winGetLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
/* FormatMessage returns 0 on failure. Otherwise it
** returns the number of TCHARs written to the output
** buffer, excluding the terminating null char.
@@ -1461,16 +1521,16 @@ static int getLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
DWORD dwLen = 0;
char *zOut = 0;
- if( isNT() ){
+ if( osIsNT() ){
#if SQLITE_OS_WINRT
- WCHAR zTempWide[MAX_PATH+1]; /* NOTE: Somewhat arbitrary. */
+ WCHAR zTempWide[SQLITE_WIN32_MAX_ERRMSG_CHARS+1];
dwLen = osFormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
lastErrno,
0,
zTempWide,
- MAX_PATH,
+ SQLITE_WIN32_MAX_ERRMSG_CHARS,
0);
#else
LPWSTR zTempWide = NULL;
@@ -1487,7 +1547,7 @@ static int getLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
if( dwLen > 0 ){
/* allocate a buffer and convert to UTF8 */
sqlite3BeginBenignMalloc();
- zOut = unicodeToUtf8(zTempWide);
+ zOut = winUnicodeToUtf8(zTempWide);
sqlite3EndBenignMalloc();
#if !SQLITE_OS_WINRT
/* free the system buffer allocated by FormatMessage */
@@ -1555,7 +1615,7 @@ static int winLogErrorAtLine(
int i; /* Loop counter */
zMsg[0] = 0;
- getLastErrorMsg(lastErrno, sizeof(zMsg), zMsg);
+ winGetLastErrorMsg(lastErrno, sizeof(zMsg), zMsg);
assert( errcode!=SQLITE_OK );
if( zPath==0 ) zPath = "";
for(i=0; zMsg[i] && zMsg[i]!='\r' && zMsg[i]!='\n'; i++){}
@@ -1580,17 +1640,17 @@ static int winLogErrorAtLine(
#ifndef SQLITE_WIN32_IOERR_RETRY_DELAY
# define SQLITE_WIN32_IOERR_RETRY_DELAY 25
#endif
-static int win32IoerrRetry = SQLITE_WIN32_IOERR_RETRY;
-static int win32IoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY;
+static int winIoerrRetry = SQLITE_WIN32_IOERR_RETRY;
+static int winIoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY;
/*
** If a ReadFile() or WriteFile() error occurs, invoke this routine
** to see if it should be retried. Return TRUE to retry. Return FALSE
** to give up with an error.
*/
-static int retryIoerr(int *pnRetry, DWORD *pError){
+static int winRetryIoerr(int *pnRetry, DWORD *pError){
DWORD e = osGetLastError();
- if( *pnRetry>=win32IoerrRetry ){
+ if( *pnRetry>=winIoerrRetry ){
if( pError ){
*pError = e;
}
@@ -1599,7 +1659,7 @@ static int retryIoerr(int *pnRetry, DWORD *pError){
if( e==ERROR_ACCESS_DENIED ||
e==ERROR_LOCK_VIOLATION ||
e==ERROR_SHARING_VIOLATION ){
- sqlite3_win32_sleep(win32IoerrRetryDelay*(1+*pnRetry));
+ sqlite3_win32_sleep(winIoerrRetryDelay*(1+*pnRetry));
++*pnRetry;
return 1;
}
@@ -1612,11 +1672,11 @@ static int retryIoerr(int *pnRetry, DWORD *pError){
/*
** Log a I/O error retry episode.
*/
-static void logIoerr(int nRetry){
+static void winLogIoerr(int nRetry){
if( nRetry ){
sqlite3_log(SQLITE_IOERR,
"delayed %dms for lock/sharing conflict",
- win32IoerrRetryDelay*nRetry*(nRetry+1)/2
+ winIoerrRetryDelay*nRetry*(nRetry+1)/2
);
}
}
@@ -1681,7 +1741,7 @@ static int winceCreateLock(const char *zFilename, winFile *pFile){
BOOL bLogged = FALSE;
BOOL bInit = TRUE;
- zName = utf8ToUnicode(zFilename);
+ zName = winUtf8ToUnicode(zFilename);
if( zName==0 ){
/* out of memory */
return SQLITE_IOERR_NOMEM;
@@ -1954,7 +2014,7 @@ static BOOL winLockFile(
return winceLockFile(phFile, offsetLow, offsetHigh,
numBytesLow, numBytesHigh);
#else
- if( isNT() ){
+ if( osIsNT() ){
OVERLAPPED ovlp;
memset(&ovlp, 0, sizeof(OVERLAPPED));
ovlp.Offset = offsetLow;
@@ -1985,7 +2045,7 @@ static BOOL winUnlockFile(
return winceUnlockFile(phFile, offsetLow, offsetHigh,
numBytesLow, numBytesHigh);
#else
- if( isNT() ){
+ if( osIsNT() ){
OVERLAPPED ovlp;
memset(&ovlp, 0, sizeof(OVERLAPPED));
ovlp.Offset = offsetLow;
@@ -2015,7 +2075,7 @@ static BOOL winUnlockFile(
** argument to offset iOffset within the file. If successful, return 0.
** Otherwise, set pFile->lastErrno and return non-zero.
*/
-static int seekWinFile(winFile *pFile, sqlite3_int64 iOffset){
+static int winSeekFile(winFile *pFile, sqlite3_int64 iOffset){
#if !SQLITE_OS_WINRT
LONG upperBits; /* Most sig. 32 bits of new offset */
LONG lowerBits; /* Least sig. 32 bits of new offset */
@@ -2040,7 +2100,7 @@ static int seekWinFile(winFile *pFile, sqlite3_int64 iOffset){
&& ((lastErrno = osGetLastError())!=NO_ERROR)) ){
pFile->lastErrno = lastErrno;
winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno,
- "seekWinFile", pFile->zPath);
+ "winSeekFile", pFile->zPath);
OSTRACE(("SEEK file=%p, rc=SQLITE_IOERR_SEEK\n", pFile->h));
return 1;
}
@@ -2061,7 +2121,7 @@ static int seekWinFile(winFile *pFile, sqlite3_int64 iOffset){
if(!bRet){
pFile->lastErrno = osGetLastError();
winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno,
- "seekWinFile", pFile->zPath);
+ "winSeekFile", pFile->zPath);
OSTRACE(("SEEK file=%p, rc=SQLITE_IOERR_SEEK\n", pFile->h));
return 1;
}
@@ -2176,7 +2236,7 @@ static int winRead(
#endif
#if SQLITE_OS_WINCE
- if( seekWinFile(pFile, offset) ){
+ if( winSeekFile(pFile, offset) ){
OSTRACE(("READ file=%p, rc=SQLITE_FULL\n", pFile->h));
return SQLITE_FULL;
}
@@ -2189,13 +2249,13 @@ static int winRead(
osGetLastError()!=ERROR_HANDLE_EOF ){
#endif
DWORD lastErrno;
- if( retryIoerr(&nRetry, &lastErrno) ) continue;
+ if( winRetryIoerr(&nRetry, &lastErrno) ) continue;
pFile->lastErrno = lastErrno;
OSTRACE(("READ file=%p, rc=SQLITE_IOERR_READ\n", pFile->h));
return winLogError(SQLITE_IOERR_READ, pFile->lastErrno,
"winRead", pFile->zPath);
}
- logIoerr(nRetry);
+ winLogIoerr(nRetry);
if( nRead<(DWORD)amt ){
/* Unread parts of the buffer must be zero-filled */
memset(&((char*)pBuf)[nRead], 0, amt-nRead);
@@ -2248,7 +2308,7 @@ static int winWrite(
#endif
#if SQLITE_OS_WINCE
- rc = seekWinFile(pFile, offset);
+ rc = winSeekFile(pFile, offset);
if( rc==0 ){
#else
{
@@ -2273,7 +2333,7 @@ static int winWrite(
#else
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, &overlapped) ){
#endif
- if( retryIoerr(&nRetry, &lastErrno) ) continue;
+ if( winRetryIoerr(&nRetry, &lastErrno) ) continue;
break;
}
assert( nWrite==0 || nWrite<=(DWORD)nRem );
@@ -2305,7 +2365,7 @@ static int winWrite(
return winLogError(SQLITE_IOERR_WRITE, pFile->lastErrno,
"winWrite", pFile->zPath);
}else{
- logIoerr(nRetry);
+ winLogIoerr(nRetry);
}
OSTRACE(("WRITE file=%p, rc=SQLITE_OK\n", pFile->h));
return SQLITE_OK;
@@ -2334,7 +2394,7 @@ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){
}
/* SetEndOfFile() returns non-zero when successful, or zero when it fails. */
- if( seekWinFile(pFile, nByte) ){
+ if( winSeekFile(pFile, nByte) ){
rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno,
"winTruncate1", pFile->zPath);
}else if( 0==osSetEndOfFile(pFile->h) &&
@@ -2415,6 +2475,7 @@ static int winSync(sqlite3_file *id, int flags){
** no-op
*/
#ifdef SQLITE_NO_SYNC
+ OSTRACE(("SYNC-NOP file=%p, rc=SQLITE_OK\n", pFile->h));
return SQLITE_OK;
#else
rc = osFlushFileBuffers(pFile->h);
@@ -2512,10 +2573,10 @@ static int winFileSize(sqlite3_file *id, sqlite3_int64 *pSize){
** Different API routines are called depending on whether or not this
** is Win9x or WinNT.
*/
-static int getReadLock(winFile *pFile){
+static int winGetReadLock(winFile *pFile){
int res;
OSTRACE(("READ-LOCK file=%p, lock=%d\n", pFile->h, pFile->locktype));
- if( isNT() ){
+ if( osIsNT() ){
#if SQLITE_OS_WINCE
/*
** NOTE: Windows CE is handled differently here due its lack of the Win32
@@ -2547,11 +2608,11 @@ static int getReadLock(winFile *pFile){
/*
** Undo a readlock
*/
-static int unlockReadLock(winFile *pFile){
+static int winUnlockReadLock(winFile *pFile){
int res;
DWORD lastErrno;
OSTRACE(("READ-UNLOCK file=%p, lock=%d\n", pFile->h, pFile->locktype));
- if( isNT() ){
+ if( osIsNT() ){
res = winUnlockFile(&pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
}
#ifdef SQLITE_WIN32_HAS_ANSI
@@ -2562,7 +2623,7 @@ static int unlockReadLock(winFile *pFile){
if( res==0 && ((lastErrno = osGetLastError())!=ERROR_NOT_LOCKED) ){
pFile->lastErrno = lastErrno;
winLogError(SQLITE_IOERR_UNLOCK, pFile->lastErrno,
- "unlockReadLock", pFile->zPath);
+ "winUnlockReadLock", pFile->zPath);
}
OSTRACE(("READ-UNLOCK file=%p, rc=%s\n", pFile->h, sqlite3ErrName(res)));
return res;
@@ -2653,7 +2714,7 @@ static int winLock(sqlite3_file *id, int locktype){
*/
if( locktype==SHARED_LOCK && res ){
assert( pFile->locktype==NO_LOCK );
- res = getReadLock(pFile);
+ res = winGetReadLock(pFile);
if( res ){
newLocktype = SHARED_LOCK;
}else{
@@ -2684,14 +2745,14 @@ static int winLock(sqlite3_file *id, int locktype){
*/
if( locktype==EXCLUSIVE_LOCK && res ){
assert( pFile->locktype>=SHARED_LOCK );
- res = unlockReadLock(pFile);
+ res = winUnlockReadLock(pFile);
res = winLockFile(&pFile->h, SQLITE_LOCKFILE_FLAGS, SHARED_FIRST, 0,
SHARED_SIZE, 0);
if( res ){
newLocktype = EXCLUSIVE_LOCK;
}else{
lastErrno = osGetLastError();
- getReadLock(pFile);
+ winGetReadLock(pFile);
}
}
@@ -2708,10 +2769,10 @@ static int winLock(sqlite3_file *id, int locktype){
if( res ){
rc = SQLITE_OK;
}else{
- OSTRACE(("LOCK-FAIL file=%p, wanted=%d, got=%d\n",
- pFile->h, locktype, newLocktype));
pFile->lastErrno = lastErrno;
rc = SQLITE_BUSY;
+ OSTRACE(("LOCK-FAIL file=%p, wanted=%d, got=%d\n",
+ pFile->h, locktype, newLocktype));
}
pFile->locktype = (u8)newLocktype;
OSTRACE(("LOCK file=%p, lock=%d, rc=%s\n",
@@ -2771,7 +2832,7 @@ static int winUnlock(sqlite3_file *id, int locktype){
type = pFile->locktype;
if( type>=EXCLUSIVE_LOCK ){
winUnlockFile(&pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
- if( locktype==SHARED_LOCK && !getReadLock(pFile) ){
+ if( locktype==SHARED_LOCK && !winGetReadLock(pFile) ){
/* This should never happen. We should always be able to
** reacquire the read lock */
rc = winLogError(SQLITE_IOERR_UNLOCK, osGetLastError(),
@@ -2782,7 +2843,7 @@ static int winUnlock(sqlite3_file *id, int locktype){
winUnlockFile(&pFile->h, RESERVED_BYTE, 0, 1, 0);
}
if( locktype==NO_LOCK && type>=SHARED_LOCK ){
- unlockReadLock(pFile);
+ winUnlockReadLock(pFile);
}
if( type>=PENDING_LOCK ){
winUnlockFile(&pFile->h, PENDING_BYTE, 0, 1, 0);
@@ -2810,7 +2871,7 @@ static void winModeBit(winFile *pFile, unsigned char mask, int *pArg){
}
/* Forward declaration */
-static int getTempname(int nBuf, char *zBuf);
+static int winGetTempname(sqlite3_vfs *, char **);
#if SQLITE_MAX_MMAP_SIZE>0
static int winMapfile(winFile*, sqlite3_int64);
#endif
@@ -2873,26 +2934,26 @@ static int winFileControl(sqlite3_file *id, int op, void *pArg){
case SQLITE_FCNTL_WIN32_AV_RETRY: {
int *a = (int*)pArg;
if( a[0]>0 ){
- win32IoerrRetry = a[0];
+ winIoerrRetry = a[0];
}else{
- a[0] = win32IoerrRetry;
+ a[0] = winIoerrRetry;
}
if( a[1]>0 ){
- win32IoerrRetryDelay = a[1];
+ winIoerrRetryDelay = a[1];
}else{
- a[1] = win32IoerrRetryDelay;
+ a[1] = winIoerrRetryDelay;
}
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
return SQLITE_OK;
}
case SQLITE_FCNTL_TEMPFILENAME: {
- char *zTFile = sqlite3MallocZero( pFile->pVfs->mxPathname );
- if( zTFile ){
- getTempname(pFile->pVfs->mxPathname, zTFile);
+ char *zTFile = 0;
+ int rc = winGetTempname(pFile->pVfs, &zTFile);
+ if( rc==SQLITE_OK ){
*(char**)pArg = zTFile;
}
- OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
- return SQLITE_OK;
+ OSTRACE(("FCNTL file=%p, rc=%d\n", pFile->h, rc));
+ return rc;
}
#if SQLITE_MAX_MMAP_SIZE>0
case SQLITE_FCNTL_MMAP_SIZE: {
@@ -3854,10 +3915,10 @@ static const sqlite3_io_methods winIoMethod = {
** is obtained from malloc and must be freed by the calling
** function.
*/
-static void *convertUtf8Filename(const char *zFilename){
+static void *winConvertUtf8Filename(const char *zFilename){
void *zConverted = 0;
- if( isNT() ){
- zConverted = utf8ToUnicode(zFilename);
+ if( osIsNT() ){
+ zConverted = winUtf8ToUnicode(zFilename);
}
#ifdef SQLITE_WIN32_HAS_ANSI
else{
@@ -3869,26 +3930,29 @@ static void *convertUtf8Filename(const char *zFilename){
}
/*
-** Maximum pathname length (in bytes) for windows. The MAX_PATH macro is
-** in characters, so we allocate 3 bytes per character assuming worst-case
-** 3-bytes-per-character UTF8.
+** This function returns non-zero if the specified UTF-8 string buffer
+** ends with a directory separator character.
*/
-#ifndef SQLITE_WIN32_MAX_PATH
-# define SQLITE_WIN32_MAX_PATH (MAX_PATH*3)
-#endif
+static int winEndsInDirSep(char *zBuf){
+ if( zBuf ){
+ int nLen = sqlite3Strlen30(zBuf);
+ return nLen>0 && winIsDirSep(zBuf[nLen-1]);
+ }
+ return 0;
+}
/*
-** Create a temporary file name in zBuf. zBuf must be big enough to
-** hold at pVfs->mxPathname characters.
+** Create a temporary file name and store the resulting pointer into pzBuf.
+** The pointer returned in pzBuf must be freed via sqlite3_free().
*/
-static int getTempname(int nBuf, char *zBuf){
+static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){
static char zChars[] =
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";
size_t i, j;
- int nTempPath;
- char zTempPath[SQLITE_WIN32_MAX_PATH+2];
+ int nBuf, nLen;
+ char *zBuf;
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
@@ -3896,23 +3960,49 @@ static int getTempname(int nBuf, char *zBuf){
*/
SimulateIOError( return SQLITE_IOERR );
+ /* Allocate a temporary buffer to store the fully qualified file
+ ** name for the temporary file. If this fails, we cannot continue.
+ */
+ nBuf = pVfs->mxPathname;
+ zBuf = sqlite3MallocZero( nBuf+2 );
+ if( !zBuf ){
+ OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
+ return SQLITE_IOERR_NOMEM;
+ }
+
+ /* Figure out the effective temporary directory. First, check if one
+ ** has been explicitly set by the application; otherwise, use the one
+ ** configured by the operating system.
+ */
+ assert( nBuf>30 );
if( sqlite3_temp_directory ){
- sqlite3_snprintf(SQLITE_WIN32_MAX_PATH-30, zTempPath, "%s",
- sqlite3_temp_directory);
+ sqlite3_snprintf(nBuf-30, zBuf, "%s%s", sqlite3_temp_directory,
+ winEndsInDirSep(sqlite3_temp_directory) ? "" :
+ winGetDirDep());
}
#if !SQLITE_OS_WINRT
- else if( isNT() ){
+ else if( osIsNT() ){
char *zMulti;
- WCHAR zWidePath[MAX_PATH];
- if( osGetTempPathW(MAX_PATH-30, zWidePath)==0 ){
+ LPWSTR zWidePath = sqlite3MallocZero( nBuf*sizeof(WCHAR) );
+ if( !zWidePath ){
+ sqlite3_free(zBuf);
+ OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
+ return SQLITE_IOERR_NOMEM;
+ }
+ if( osGetTempPathW(nBuf, zWidePath)==0 ){
+ sqlite3_free(zWidePath);
+ sqlite3_free(zBuf);
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_GETTEMPPATH\n"));
return SQLITE_IOERR_GETTEMPPATH;
}
- zMulti = unicodeToUtf8(zWidePath);
+ zMulti = winUnicodeToUtf8(zWidePath);
if( zMulti ){
- sqlite3_snprintf(SQLITE_WIN32_MAX_PATH-30, zTempPath, "%s", zMulti);
+ sqlite3_snprintf(nBuf-30, zBuf, "%s", zMulti);
sqlite3_free(zMulti);
+ sqlite3_free(zWidePath);
}else{
+ sqlite3_free(zWidePath);
+ sqlite3_free(zBuf);
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
return SQLITE_IOERR_NOMEM;
}
@@ -3920,55 +4010,43 @@ static int getTempname(int nBuf, char *zBuf){
#ifdef SQLITE_WIN32_HAS_ANSI
else{
char *zUtf8;
- char zMbcsPath[SQLITE_WIN32_MAX_PATH];
- if( osGetTempPathA(SQLITE_WIN32_MAX_PATH-30, zMbcsPath)==0 ){
+ char *zMbcsPath = sqlite3MallocZero( nBuf );
+ if( !zMbcsPath ){
+ sqlite3_free(zBuf);
+ OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
+ return SQLITE_IOERR_NOMEM;
+ }
+ if( osGetTempPathA(nBuf, zMbcsPath)==0 ){
+ sqlite3_free(zBuf);
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_GETTEMPPATH\n"));
return SQLITE_IOERR_GETTEMPPATH;
}
zUtf8 = sqlite3_win32_mbcs_to_utf8(zMbcsPath);
if( zUtf8 ){
- sqlite3_snprintf(SQLITE_WIN32_MAX_PATH-30, zTempPath, "%s", zUtf8);
+ sqlite3_snprintf(nBuf-30, zBuf, "%s", zUtf8);
sqlite3_free(zUtf8);
}else{
+ sqlite3_free(zBuf);
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
return SQLITE_IOERR_NOMEM;
}
}
-#else
- else{
- /*
- ** Compiled without ANSI support and the current operating system
- ** is not Windows NT; therefore, just zero the temporary buffer.
- */
- memset(zTempPath, 0, SQLITE_WIN32_MAX_PATH+2);
- }
#endif /* SQLITE_WIN32_HAS_ANSI */
-#else
- else{
- /*
- ** Compiled for WinRT and the sqlite3_temp_directory is not set;
- ** therefore, just zero the temporary buffer.
- */
- memset(zTempPath, 0, SQLITE_WIN32_MAX_PATH+2);
- }
#endif /* !SQLITE_OS_WINRT */
/* Check that the output buffer is large enough for the temporary file
** name. If it is not, return SQLITE_ERROR.
*/
- nTempPath = sqlite3Strlen30(zTempPath);
+ nLen = sqlite3Strlen30(zBuf);
- if( (nTempPath + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 18) >= nBuf ){
+ if( (nLen + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 18) >= nBuf ){
+ sqlite3_free(zBuf);
OSTRACE(("TEMP-FILENAME rc=SQLITE_ERROR\n"));
return SQLITE_ERROR;
}
- for(i=nTempPath; i>0 && zTempPath[i-1]=='\\'; i--){}
- zTempPath[i] = 0;
+ sqlite3_snprintf(nBuf-18-nLen, zBuf+nLen, SQLITE_TEMP_FILE_PREFIX);
- sqlite3_snprintf(nBuf-18, zBuf, (nTempPath > 0) ?
- "%s\\"SQLITE_TEMP_FILE_PREFIX : SQLITE_TEMP_FILE_PREFIX,
- zTempPath);
j = sqlite3Strlen30(zBuf);
sqlite3_randomness(15, &zBuf[j]);
for(i=0; i<15; i++, j++){
@@ -3976,6 +4054,7 @@ static int getTempname(int nBuf, char *zBuf){
}
zBuf[j] = 0;
zBuf[j+1] = 0;
+ *pzBuf = zBuf;
OSTRACE(("TEMP-FILENAME name=%s, rc=SQLITE_OK\n", zBuf));
return SQLITE_OK;
@@ -3991,13 +4070,13 @@ static int winIsDir(const void *zConverted){
int rc = 0;
DWORD lastErrno;
- if( isNT() ){
+ if( osIsNT() ){
int cnt = 0;
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
memset(&sAttrData, 0, sizeof(sAttrData));
while( !(rc = osGetFileAttributesExW((LPCWSTR)zConverted,
GetFileExInfoStandard,
- &sAttrData)) && retryIoerr(&cnt, &lastErrno) ){}
+ &sAttrData)) && winRetryIoerr(&cnt, &lastErrno) ){}
if( !rc ){
return 0; /* Invalid name? */
}
@@ -4014,7 +4093,7 @@ static int winIsDir(const void *zConverted){
** Open a file.
*/
static int winOpen(
- sqlite3_vfs *pVfs, /* Not used */
+ sqlite3_vfs *pVfs, /* Used to get maximum path name length */
const char *zName, /* Name of the file (UTF-8) */
sqlite3_file *id, /* Write the SQLite file handle here */
int flags, /* Open mode flags */
@@ -4037,7 +4116,7 @@ static int winOpen(
/* If argument zPath is a NULL pointer, this function is required to open
** a temporary file. Use this buffer to store the file name in.
*/
- char zTmpname[SQLITE_WIN32_MAX_PATH+2]; /* Buffer used to create temp filename */
+ char *zTmpname = 0; /* For temporary filename, if necessary. */
int rc = SQLITE_OK; /* Function Return Code */
#if !defined(NDEBUG) || SQLITE_OS_WINCE
@@ -4092,7 +4171,7 @@ static int winOpen(
pFile->h = INVALID_HANDLE_VALUE;
#if SQLITE_OS_WINRT
- if( !sqlite3_temp_directory ){
+ if( !zUtf8Name && !sqlite3_temp_directory ){
sqlite3_log(SQLITE_ERROR,
"sqlite3_temp_directory variable should be set for WinRT");
}
@@ -4102,8 +4181,8 @@ static int winOpen(
** temporary file name to use
*/
if( !zUtf8Name ){
- assert(isDelete && !isOpenJournal);
- rc = getTempname(SQLITE_WIN32_MAX_PATH+2, zTmpname);
+ assert( isDelete && !isOpenJournal );
+ rc = winGetTempname(pVfs, &zTmpname);
if( rc!=SQLITE_OK ){
OSTRACE(("OPEN name=%s, rc=%s", zUtf8Name, sqlite3ErrName(rc)));
return rc;
@@ -4116,17 +4195,19 @@ static int winOpen(
** sqlite3_uri_parameter().
*/
assert( (eType!=SQLITE_OPEN_MAIN_DB) || (flags & SQLITE_OPEN_URI) ||
- zUtf8Name[strlen(zUtf8Name)+1]==0 );
+ zUtf8Name[sqlite3Strlen30(zUtf8Name)+1]==0 );
/* Convert the filename to the system encoding. */
- zConverted = convertUtf8Filename(zUtf8Name);
+ zConverted = winConvertUtf8Filename(zUtf8Name);
if( zConverted==0 ){
+ sqlite3_free(zTmpname);
OSTRACE(("OPEN name=%s, rc=SQLITE_IOERR_NOMEM", zUtf8Name));
return SQLITE_IOERR_NOMEM;
}
if( winIsDir(zConverted) ){
sqlite3_free(zConverted);
+ sqlite3_free(zTmpname);
OSTRACE(("OPEN name=%s, rc=SQLITE_CANTOPEN_ISDIR", zUtf8Name));
return SQLITE_CANTOPEN_ISDIR;
}
@@ -4173,7 +4254,7 @@ static int winOpen(
dwFlagsAndAttributes |= FILE_FLAG_RANDOM_ACCESS;
#endif
- if( isNT() ){
+ if( osIsNT() ){
#if SQLITE_OS_WINRT
CREATEFILE2_EXTENDED_PARAMETERS extendedParameters;
extendedParameters.dwSize = sizeof(CREATEFILE2_EXTENDED_PARAMETERS);
@@ -4188,7 +4269,7 @@ static int winOpen(
dwShareMode,
dwCreationDisposition,
&extendedParameters))==INVALID_HANDLE_VALUE &&
- retryIoerr(&cnt, &lastErrno) ){
+ winRetryIoerr(&cnt, &lastErrno) ){
/* Noop */
}
#else
@@ -4198,7 +4279,7 @@ static int winOpen(
dwCreationDisposition,
dwFlagsAndAttributes,
NULL))==INVALID_HANDLE_VALUE &&
- retryIoerr(&cnt, &lastErrno) ){
+ winRetryIoerr(&cnt, &lastErrno) ){
/* Noop */
}
#endif
@@ -4211,12 +4292,12 @@ static int winOpen(
dwCreationDisposition,
dwFlagsAndAttributes,
NULL))==INVALID_HANDLE_VALUE &&
- retryIoerr(&cnt, &lastErrno) ){
+ winRetryIoerr(&cnt, &lastErrno) ){
/* Noop */
}
}
#endif
- logIoerr(cnt);
+ winLogIoerr(cnt);
OSTRACE(("OPEN file=%p, name=%s, access=%lx, rc=%s\n", h, zUtf8Name,
dwDesiredAccess, (h==INVALID_HANDLE_VALUE) ? "failed" : "ok"));
@@ -4225,6 +4306,7 @@ static int winOpen(
pFile->lastErrno = lastErrno;
winLogError(SQLITE_CANTOPEN, pFile->lastErrno, "winOpen", zUtf8Name);
sqlite3_free(zConverted);
+ sqlite3_free(zTmpname);
if( isReadWrite && !isExclusive ){
return winOpen(pVfs, zName, id,
((flags|SQLITE_OPEN_READONLY) &
@@ -4253,6 +4335,7 @@ static int winOpen(
){
osCloseHandle(h);
sqlite3_free(zConverted);
+ sqlite3_free(zTmpname);
OSTRACE(("OPEN-CE-LOCK name=%s, rc=%s\n", zName, sqlite3ErrName(rc)));
return rc;
}
@@ -4262,6 +4345,7 @@ static int winOpen(
#endif
{
sqlite3_free(zConverted);
+ sqlite3_free(zTmpname);
}
pFile->pMethod = &winIoMethod;
@@ -4315,11 +4399,12 @@ static int winDelete(
SimulateIOError(return SQLITE_IOERR_DELETE);
OSTRACE(("DELETE name=%s, syncDir=%d\n", zFilename, syncDir));
- zConverted = convertUtf8Filename(zFilename);
+ zConverted = winConvertUtf8Filename(zFilename);
if( zConverted==0 ){
+ OSTRACE(("DELETE name=%s, rc=SQLITE_IOERR_NOMEM\n", zFilename));
return SQLITE_IOERR_NOMEM;
}
- if( isNT() ){
+ if( osIsNT() ){
do {
#if SQLITE_OS_WINRT
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
@@ -4358,7 +4443,7 @@ static int winDelete(
rc = SQLITE_OK; /* Deleted OK. */
break;
}
- if ( !retryIoerr(&cnt, &lastErrno) ){
+ if ( !winRetryIoerr(&cnt, &lastErrno) ){
rc = SQLITE_ERROR; /* No more retries. */
break;
}
@@ -4386,7 +4471,7 @@ static int winDelete(
rc = SQLITE_OK; /* Deleted OK. */
break;
}
- if ( !retryIoerr(&cnt, &lastErrno) ){
+ if ( !winRetryIoerr(&cnt, &lastErrno) ){
rc = SQLITE_ERROR; /* No more retries. */
break;
}
@@ -4397,7 +4482,7 @@ static int winDelete(
rc = winLogError(SQLITE_IOERR_DELETE, lastErrno,
"winDelete", zFilename);
}else{
- logIoerr(cnt);
+ winLogIoerr(cnt);
}
sqlite3_free(zConverted);
OSTRACE(("DELETE name=%s, rc=%s\n", zFilename, sqlite3ErrName(rc)));
@@ -4423,18 +4508,18 @@ static int winAccess(
OSTRACE(("ACCESS name=%s, flags=%x, pResOut=%p\n",
zFilename, flags, pResOut));
- zConverted = convertUtf8Filename(zFilename);
+ zConverted = winConvertUtf8Filename(zFilename);
if( zConverted==0 ){
OSTRACE(("ACCESS name=%s, rc=SQLITE_IOERR_NOMEM\n", zFilename));
return SQLITE_IOERR_NOMEM;
}
- if( isNT() ){
+ if( osIsNT() ){
int cnt = 0;
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
memset(&sAttrData, 0, sizeof(sAttrData));
while( !(rc = osGetFileAttributesExW((LPCWSTR)zConverted,
GetFileExInfoStandard,
- &sAttrData)) && retryIoerr(&cnt, &lastErrno) ){}
+ &sAttrData)) && winRetryIoerr(&cnt, &lastErrno) ){}
if( rc ){
/* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file
** as if it does not exist.
@@ -4447,7 +4532,7 @@ static int winAccess(
attr = sAttrData.dwFileAttributes;
}
}else{
- logIoerr(cnt);
+ winLogIoerr(cnt);
if( lastErrno!=ERROR_FILE_NOT_FOUND && lastErrno!=ERROR_PATH_NOT_FOUND ){
winLogError(SQLITE_IOERR_ACCESS, lastErrno, "winAccess", zFilename);
sqlite3_free(zConverted);
@@ -4498,7 +4583,7 @@ static BOOL winIsVerbatimPathname(
** the final two cases; therefore, we return the safer return value of TRUE
** so that callers of this function will simply use it verbatim.
*/
- if ( zPathname[0]=='/' || zPathname[0]=='\\' ){
+ if ( winIsDirSep(zPathname[0]) ){
return TRUE;
}
@@ -4534,7 +4619,6 @@ static int winFullPathname(
#if defined(__CYGWIN__)
SimulateIOError( return SQLITE_ERROR );
UNUSED_PARAMETER(nFull);
- assert( pVfs->mxPathname>=SQLITE_WIN32_MAX_PATH );
assert( nFull>=pVfs->mxPathname );
if ( sqlite3_data_directory && !winIsVerbatimPathname(zRelative) ){
/*
@@ -4543,15 +4627,21 @@ static int winFullPathname(
** for converting the relative path name to an absolute
** one by prepending the data directory and a slash.
*/
- char zOut[SQLITE_WIN32_MAX_PATH+1];
+ char *zOut = sqlite3MallocZero( pVfs->mxPathname+1 );
+ if( !zOut ){
+ winLogError(SQLITE_IOERR_NOMEM, 0, "winFullPathname", zRelative);
+ return SQLITE_IOERR_NOMEM;
+ }
if( cygwin_conv_path(CCP_POSIX_TO_WIN_A|CCP_RELATIVE, zRelative, zOut,
- SQLITE_WIN32_MAX_PATH+1)<0 ){
+ pVfs->mxPathname+1)<0 ){
winLogError(SQLITE_CANTOPEN_FULLPATH, (DWORD)errno, "cygwin_conv_path",
zRelative);
+ sqlite3_free(zOut);
return SQLITE_CANTOPEN_FULLPATH;
}
- sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s\\%s",
- sqlite3_data_directory, zOut);
+ sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%s%s",
+ sqlite3_data_directory, winGetDirDep(), zOut);
+ sqlite3_free(zOut);
}else{
if( cygwin_conv_path(CCP_POSIX_TO_WIN_A, zRelative, zFull, nFull)<0 ){
winLogError(SQLITE_CANTOPEN_FULLPATH, (DWORD)errno, "cygwin_conv_path",
@@ -4573,8 +4663,8 @@ static int winFullPathname(
** for converting the relative path name to an absolute
** one by prepending the data directory and a backslash.
*/
- sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s\\%s",
- sqlite3_data_directory, zRelative);
+ sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%s%s",
+ sqlite3_data_directory, winGetDirDep(), zRelative);
}else{
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zRelative);
}
@@ -4606,15 +4696,15 @@ static int winFullPathname(
** for converting the relative path name to an absolute
** one by prepending the data directory and a backslash.
*/
- sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s\\%s",
- sqlite3_data_directory, zRelative);
+ sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%s%s",
+ sqlite3_data_directory, winGetDirDep(), zRelative);
return SQLITE_OK;
}
- zConverted = convertUtf8Filename(zRelative);
+ zConverted = winConvertUtf8Filename(zRelative);
if( zConverted==0 ){
return SQLITE_IOERR_NOMEM;
}
- if( isNT() ){
+ if( osIsNT() ){
LPWSTR zTemp;
nByte = osGetFullPathNameW((LPCWSTR)zConverted, 0, 0, 0);
if( nByte==0 ){
@@ -4638,7 +4728,7 @@ static int winFullPathname(
return SQLITE_CANTOPEN_FULLPATH;
}
sqlite3_free(zConverted);
- zOut = unicodeToUtf8(zTemp);
+ zOut = winUnicodeToUtf8(zTemp);
sqlite3_free(zTemp);
}
#ifdef SQLITE_WIN32_HAS_ANSI
@@ -4691,12 +4781,12 @@ static int winFullPathname(
*/
static void *winDlOpen(sqlite3_vfs *pVfs, const char *zFilename){
HANDLE h;
- void *zConverted = convertUtf8Filename(zFilename);
+ void *zConverted = winConvertUtf8Filename(zFilename);
UNUSED_PARAMETER(pVfs);
if( zConverted==0 ){
return 0;
}
- if( isNT() ){
+ if( osIsNT() ){
#if SQLITE_OS_WINRT
h = osLoadPackagedLibrary((LPCWSTR)zConverted, 0);
#else
@@ -4713,7 +4803,7 @@ static void *winDlOpen(sqlite3_vfs *pVfs, const char *zFilename){
}
static void winDlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){
UNUSED_PARAMETER(pVfs);
- getLastErrorMsg(osGetLastError(), nBuf, zBufOut);
+ winGetLastErrorMsg(osGetLastError(), nBuf, zBufOut);
}
static void (*winDlSym(sqlite3_vfs *pVfs,void *pH,const char *zSym))(void){
UNUSED_PARAMETER(pVfs);
@@ -4889,7 +4979,7 @@ static int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){
*/
static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
UNUSED_PARAMETER(pVfs);
- return getLastErrorMsg(osGetLastError(), nBuf, zBuf);
+ return winGetLastErrorMsg(osGetLastError(), nBuf, zBuf);
}
/*
@@ -4899,7 +4989,7 @@ int sqlite3_os_init(void){
static sqlite3_vfs winVfs = {
3, /* iVersion */
sizeof(winFile), /* szOsFile */
- SQLITE_WIN32_MAX_PATH, /* mxPathname */
+ SQLITE_WIN32_MAX_PATH_BYTES, /* mxPathname */
0, /* pNext */
"win32", /* zName */
0, /* pAppData */
@@ -4920,6 +5010,32 @@ int sqlite3_os_init(void){
winGetSystemCall, /* xGetSystemCall */
winNextSystemCall, /* xNextSystemCall */
};
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ static sqlite3_vfs winLongPathVfs = {
+ 3, /* iVersion */
+ sizeof(winFile), /* szOsFile */
+ SQLITE_WINNT_MAX_PATH_BYTES, /* mxPathname */
+ 0, /* pNext */
+ "win32-longpath", /* zName */
+ 0, /* pAppData */
+ winOpen, /* xOpen */
+ winDelete, /* xDelete */
+ winAccess, /* xAccess */
+ winFullPathname, /* xFullPathname */
+ winDlOpen, /* xDlOpen */
+ winDlError, /* xDlError */
+ winDlSym, /* xDlSym */
+ winDlClose, /* xDlClose */
+ winRandomness, /* xRandomness */
+ winSleep, /* xSleep */
+ winCurrentTime, /* xCurrentTime */
+ winGetLastError, /* xGetLastError */
+ winCurrentTimeInt64, /* xCurrentTimeInt64 */
+ winSetSystemCall, /* xSetSystemCall */
+ winGetSystemCall, /* xGetSystemCall */
+ winNextSystemCall, /* xNextSystemCall */
+ };
+#endif
/* Double-check that the aSyscall[] array has been constructed
** correctly. See ticket [bb3a86e890c8e96ab] */
@@ -4936,6 +5052,11 @@ int sqlite3_os_init(void){
assert( winSysInfo.dwPageSize>0 );
sqlite3_vfs_register(&winVfs, 1);
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ sqlite3_vfs_register(&winLongPathVfs, 0);
+#endif
+
return SQLITE_OK;
}