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Overview
| Comment: | In the Windows VFS, when trying to open a database file read/write, if it fails check to see if the file exists and is read-only and immediately fall back to a read-only open attempt, rather than running the AV retry loop. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
5d03c738e93d36815248991d9ed3d622 |
| User & Date: | drh 2017-09-21 20:43:48 |
References
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2017-09-22
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| 16:23 | Use the updated Win32 VFS semantics for winOpen from check-in [5d03c738e9] for WinRT, et al, as well. check-in: 2c03d8b8 user: mistachkin tags: trunk | |
Context
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2017-09-22
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| 00:24 | Update the configure script so that it looks for tclsh8.7 ahead of tclsh8.6. check-in: 0a12915b user: drh tags: trunk | |
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2017-09-21
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| 20:43 | In the Windows VFS, when trying to open a database file read/write, if it fails check to see if the file exists and is read-only and immediately fall back to a read-only open attempt, rather than running the AV retry loop. check-in: 5d03c738 user: drh tags: trunk | |
| 20:03 | In the Windows VFS, do not emit an SQLITE_CANTOPEN error log message when falling back from SQLITE_OPEN_READWRITE to SQLITE_OPEN_READONLY. Wait until the open fails completely. check-in: fa3f5bcc user: drh tags: trunk | |
Changes
Changes to src/os_win.c.
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}else{
attr = osGetFileAttributesA((char*)zConverted);
#endif
}
return (attr!=INVALID_FILE_ATTRIBUTES) && (attr&FILE_ATTRIBUTE_DIRECTORY);
}
/*
** Open a file.
*/
static int winOpen(
sqlite3_vfs *pVfs, /* Used to get maximum path length and AppData */
const char *zName, /* Name of the file (UTF-8) */
sqlite3_file *id, /* Write the SQLite file handle here */
................................................................................
dwShareMode,
dwCreationDisposition,
&extendedParameters))==INVALID_HANDLE_VALUE &&
winRetryIoerr(&cnt, &lastErrno) ){
/* Noop */
}
#else
while( (h = osCreateFileW((LPCWSTR)zConverted,
dwDesiredAccess,
dwShareMode, NULL,
dwCreationDisposition,
dwFlagsAndAttributes,
NULL))==INVALID_HANDLE_VALUE &&
winRetryIoerr(&cnt, &lastErrno) ){
/* Noop */
}
#endif
}
#ifdef SQLITE_WIN32_HAS_ANSI
else{
while( (h = osCreateFileA((LPCSTR)zConverted,
dwDesiredAccess,
dwShareMode, NULL,
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}else{
attr = osGetFileAttributesA((char*)zConverted);
#endif
}
return (attr!=INVALID_FILE_ATTRIBUTES) && (attr&FILE_ATTRIBUTE_DIRECTORY);
}
/* forward reference */
static int 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 */
);
/*
** Open a file.
*/
static int winOpen(
sqlite3_vfs *pVfs, /* Used to get maximum path length and AppData */
const char *zName, /* Name of the file (UTF-8) */
sqlite3_file *id, /* Write the SQLite file handle here */
................................................................................
dwShareMode,
dwCreationDisposition,
&extendedParameters))==INVALID_HANDLE_VALUE &&
winRetryIoerr(&cnt, &lastErrno) ){
/* Noop */
}
#else
do{
h = osCreateFileW((LPCWSTR)zConverted,
dwDesiredAccess,
dwShareMode, NULL,
dwCreationDisposition,
dwFlagsAndAttributes,
NULL);
if( h!=INVALID_HANDLE_VALUE ) break;
if( isReadWrite ){
int isRO = 0;
int rc2 = winAccess(pVfs, zName, SQLITE_ACCESS_READ, &isRO);
if( rc2==SQLITE_OK && isRO ) break;
}
}while( winRetryIoerr(&cnt, &lastErrno) );
#endif
}
#ifdef SQLITE_WIN32_HAS_ANSI
else{
while( (h = osCreateFileA((LPCSTR)zConverted,
dwDesiredAccess,
dwShareMode, NULL,
|