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Report corruption if a database contains a reference that is out of range

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according to the filesize-in-header database size.

FossilOrigin-Name: a91db0b1cd0b0fbadc5c8fe2eb8863629b411d87
This commit is contained in:
drh
2010-03-31 20:29:06 +00:00
parent afc266a76a
commit 8d8626fe2b
4 changed files with 15 additions and 22 deletions
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13
src/btree.c
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@@ -1583,9 +1583,11 @@ static int getAndInitPage(
MemPage **ppPage /* Write the page pointer here */
){
int rc;
TESTONLY( Pgno iLastPg = btreePagecount(pBt); )
assert( sqlite3_mutex_held(pBt->mutex) );
if( pgno<=0 || pgno>btreePagecount(pBt) ){
return SQLITE_CORRUPT_BKPT;
}
rc = btreeGetPage(pBt, pgno, ppPage, 0);
if( rc==SQLITE_OK ){
rc = btreeInitPage(*ppPage);
@@ -1593,15 +1595,6 @@ static int getAndInitPage(
releasePage(*ppPage);
}
}
/* If the requested page number was either 0 or greater than the page
** number of the last page in the database, this function should return
** SQLITE_CORRUPT or some other error (i.e. SQLITE_FULL). Check that this
** is the case. */
assert( (pgno>0 && pgno<=iLastPg) || rc!=SQLITE_OK );
testcase( pgno==0 );
testcase( pgno==iLastPg );
return rc;
}