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Change the page size of the destination database in a backup, if it is

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changeable, prior to starting the backup.

FossilOrigin-Name: a5e4e0caad788318bc973e2550488a3b83128b8b
This commit is contained in:
drh
2011-01-11 17:38:03 +00:00
parent 9f4beedb6f
commit ca94d8bf82
6 changed files with 36 additions and 15 deletions
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19
src/backup.c
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@@ -117,6 +117,16 @@ static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){
return pDb->aDb[i].pBt;
}
/*
** Attempt to set the page size of the destination to match the page size
** of the source.
*/
static int setDestPgsz(sqlite3_backup *p){
int rc;
rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),-1,0);
return rc;
}
/*
** Create an sqlite3_backup process to copy the contents of zSrcDb from
** connection handle pSrcDb to zDestDb in pDestDb. If successful, return
@@ -170,10 +180,11 @@ sqlite3_backup *sqlite3_backup_init(
p->iNext = 1;
p->isAttached = 0;
if( 0==p->pSrc || 0==p->pDest ){
/* One (or both) of the named databases did not exist. An error has
** already been written into the pDestDb handle. All that is left
** to do here is free the sqlite3_backup structure.
if( 0==p->pSrc || 0==p->pDest || setDestPgsz(p)==SQLITE_NOMEM ){
/* One (or both) of the named databases did not exist or an OOM
** error was hit. The error has already been written into the
** pDestDb handle. All that is left to do here is free the
** sqlite3_backup structure.
*/
sqlite3_free(p);
p = 0;