database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-07 02:42:48 +03:00
Code Activity

Allow media sector sizes as small as 32. The former minimum size was 512.

Browse Source 
FossilOrigin-Name: 5a32bfc17ed022c85d2615c34b41a3dcae2594bd
This commit is contained in:
drh
2009-11-11 13:17:08 +00:00
parent 5fc250100e
commit 3c99d68b5c
3 changed files with 24 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/pager.c
View File

@@ -911,10 +911,10 @@ static int readJournalHdr(
/* Check that the values read from the page-size and sector-size fields
** are within range. To be 'in range', both values need to be a power
** of two greater than or equal to 512, and not greater than their
** of two greater than or equal to 512 or 32, and not greater than their
** respective compile time maximum limits.
*/
if( iPageSize<512 || iSectorSize<512
if( iPageSize<512 || iSectorSize<32
|| iPageSize>SQLITE_MAX_PAGE_SIZE || iSectorSize>MAX_SECTOR_SIZE
|| ((iPageSize-1)&iPageSize)!=0 || ((iSectorSize-1)&iSectorSize)!=0
){
@@ -1779,8 +1779,8 @@ static int pager_truncate(Pager *pPager, Pgno nPage){
** For temporary files the effective sector size is always 512 bytes.
**
** Otherwise, for non-temporary files, the effective sector size is
** the value returned by the xSectorSize() method rounded up to 512 if
** it is less than 512, or rounded down to MAX_SECTOR_SIZE if it
** the value returned by the xSectorSize() method rounded up to 32 if
** it is less than 32, or rounded down to MAX_SECTOR_SIZE if it
** is greater than MAX_SECTOR_SIZE.
*/
static void setSectorSize(Pager *pPager){
@@ -1793,8 +1793,8 @@ static void setSectorSize(Pager *pPager){
*/
pPager->sectorSize = sqlite3OsSectorSize(pPager->fd);
}
if( pPager->sectorSize<512 ){
pPager->sectorSize = 512;
if( pPager->sectorSize<32 ){
pPager->sectorSize = 32;
}
if( pPager->sectorSize>MAX_SECTOR_SIZE ){
assert( MAX_SECTOR_SIZE>=512 );