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Overview
| Comment: | Earlier detection of out-of-range page numbers in the btree layer. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | larger-databases |
| Files: | files | file ages | folders |
| SHA3-256: |
805bb67a82be51dc6077480691ed815c |
| User & Date: | drh 2020-07-28 20:32:12 |
Context
|
2020-07-29
| ||
| 12:23 | Fix signed/unsigned compiler warnings. (check-in: 1d69eee8b0 user: drh tags: larger-databases) | |
|
2020-07-28
| ||
| 20:32 | Earlier detection of out-of-range page numbers in the btree layer. (check-in: 805bb67a82 user: drh tags: larger-databases) | |
| 17:51 | Merge enhancements from trunk. (check-in: 969c25bb14 user: drh tags: larger-databases) | |
Changes
Changes to src/btree.c.
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** first trunk page in the current free-list. This block tests if it
** is possible to add the page as a new free-list leaf.
*/
if( nFree!=0 ){
u32 nLeaf; /* Initial number of leaf cells on trunk page */
iTrunk = get4byte(&pPage1->aData[32]);
rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0);
if( rc!=SQLITE_OK ){
goto freepage_out;
}
nLeaf = get4byte(&pTrunk->aData[4]);
assert( pBt->usableSize>32 );
................................................................................
invalidateAllOverflowCache(pBt);
/* Read the value of meta[3] from the database to determine where the
** root page of the new table should go. meta[3] is the largest root-page
** created so far, so the new root-page is (meta[3]+1).
*/
sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &pgnoRoot);
pgnoRoot++;
/* The new root-page may not be allocated on a pointer-map page, or the
** PENDING_BYTE page.
*/
while( pgnoRoot==PTRMAP_PAGENO(pBt, pgnoRoot) ||
pgnoRoot==PENDING_BYTE_PAGE(pBt) ){
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** first trunk page in the current free-list. This block tests if it
** is possible to add the page as a new free-list leaf.
*/
if( nFree!=0 ){
u32 nLeaf; /* Initial number of leaf cells on trunk page */
iTrunk = get4byte(&pPage1->aData[32]);
if( iTrunk>btreePagecount(pBt) ){
rc = SQLITE_CORRUPT_BKPT;
goto freepage_out;
}
rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0);
if( rc!=SQLITE_OK ){
goto freepage_out;
}
nLeaf = get4byte(&pTrunk->aData[4]);
assert( pBt->usableSize>32 );
................................................................................
invalidateAllOverflowCache(pBt);
/* Read the value of meta[3] from the database to determine where the
** root page of the new table should go. meta[3] is the largest root-page
** created so far, so the new root-page is (meta[3]+1).
*/
sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &pgnoRoot);
if( pgnoRoot>btreePagecount(pBt) ){
return SQLITE_CORRUPT_BKPT;
}
pgnoRoot++;
/* The new root-page may not be allocated on a pointer-map page, or the
** PENDING_BYTE page.
*/
while( pgnoRoot==PTRMAP_PAGENO(pBt, pgnoRoot) ||
pgnoRoot==PENDING_BYTE_PAGE(pBt) ){
|