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Overview
| Comment: | Remove code made unreachable by the enhancement of the previous check-in. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
9e31a275ef494ea8713a1d60a15b8415 |
| User & Date: | drh 2012-01-11 16:16:08 |
Context
|
2012-01-12
| ||
| 14:25 | Remove some assert() statements that can fail with corrupt databases. (check-in: 7654ae71 user: dan tags: trunk) | |
|
2012-01-11
| ||
| 16:16 | Remove code made unreachable by the enhancement of the previous check-in. (check-in: 9e31a275 user: drh tags: trunk) | |
| 15:47 | Make the pager less vulnerable to problems caused by shifting sector sizes when rolling back a hot journal. (check-in: 629108c8 user: drh tags: trunk) | |
Changes
Changes to src/pager.c.
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newSize = szPage*(i64)nPage;
if( rc==SQLITE_OK && currentSize!=newSize ){
if( currentSize>newSize ){
rc = sqlite3OsTruncate(pPager->fd, newSize);
}else if( (currentSize+szPage)<=newSize ){
char *pTmp = pPager->pTmpSpace;
memset(pTmp, 0, szPage);
testcase( (newSize-szPage) < currentSize );
testcase( (newSize-szPage) == currentSize );
testcase( (newSize-szPage) > currentSize );
rc = sqlite3OsWrite(pPager->fd, pTmp, szPage, newSize-szPage);
}
if( rc==SQLITE_OK ){
pPager->dbFileSize = nPage;
}
................................................................................
if( isOpen(pPager->fd) ){
int rc = sqlite3OsFileSize(pPager->fd, &n);
if( rc!=SQLITE_OK ){
return rc;
}
}
nPage = (Pgno)((n+pPager->pageSize-1) / pPager->pageSize);
if( nPage==0 && n>0 ){
nPage = 1;
}
}
/* If the current number of pages in the file is greater than the
** configured maximum pager number, increase the allowed limit so
** that the file can be read.
*/
if( nPage>pPager->mxPgno ){
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newSize = szPage*(i64)nPage;
if( rc==SQLITE_OK && currentSize!=newSize ){
if( currentSize>newSize ){
rc = sqlite3OsTruncate(pPager->fd, newSize);
}else if( (currentSize+szPage)<=newSize ){
char *pTmp = pPager->pTmpSpace;
memset(pTmp, 0, szPage);
testcase( (newSize-szPage) == currentSize );
testcase( (newSize-szPage) > currentSize );
rc = sqlite3OsWrite(pPager->fd, pTmp, szPage, newSize-szPage);
}
if( rc==SQLITE_OK ){
pPager->dbFileSize = nPage;
}
................................................................................
if( isOpen(pPager->fd) ){
int rc = sqlite3OsFileSize(pPager->fd, &n);
if( rc!=SQLITE_OK ){
return rc;
}
}
nPage = (Pgno)((n+pPager->pageSize-1) / pPager->pageSize);
}
/* If the current number of pages in the file is greater than the
** configured maximum pager number, increase the allowed limit so
** that the file can be read.
*/
if( nPage>pPager->mxPgno ){
|