// Sets 'blockpos' to point to the next block segment for the inode (and moves onto the
// next block descriptor inode if necessary)
int blockSeekNextSegment(pfs_cache_t *clink, pfs_blockpos_t *blockpos)
{
pfs_cache_t *nextSegment;
int result=0;
if (blockpos->byte_offset)
{
printf("ps2fs: Panic: This is a bug!\n");
return -1;
}
// If we're at the end of the block descriptor array for the current
// inode, then move onto the next inode
if (fixIndex(blockpos->block_segment+1)==0)
{
if ((nextSegment=blockGetNextSegment(cacheUsedAdd(blockpos->inode), &result)) == NULL)
return result;
cacheAdd(blockpos->inode);
blockpos->inode=nextSegment;
if (clink->u.inode->number_data-1 == ++blockpos->block_segment)
return -EINVAL;
}
blockpos->block_offset=0;
blockpos->block_segment++;
return result;
}
void ioctl2Free(pfs_cache_t *pfree)
{
pfs_blockinfo b;
int result;
pfs_mount_t *pfsMount = pfree->pfsMount;
pfs_inode *inode = pfree->u.inode;
u32 nextsegdesc = 1, limit = inode->number_data, i, j = 0, zones;
pfs_blockinfo *bi;
pfs_cache_t *clink;
zones = inode->size / pfsMount->zsize;
if(inode->size % pfsMount->zsize)
zones++;
if(inode->number_segdesg + zones == inode->number_blocks)
return;
j = zones;
b.number = 0;
clink = cacheUsedAdd(pfree);
// iterate through each of the block segments used by the inode
for (i = 1; i < limit && j; i++)
{
if(fixIndex(i) == 0)
{
if ((clink = blockGetNextSegment(clink, &result)) == 0)
return;
nextsegdesc++;
}
else
if(j < clink->u.inode->data[fixIndex(i)].count)
{
clink->u.inode->data[fixIndex(i)].count -= j;
b.subpart = clink->u.inode->data[fixIndex(i)].subpart;
b.count = j;
b.number = clink->u.inode->data[fixIndex(i)].number +
clink->u.inode->data[fixIndex(i)].count;
j = 0;
clink->flags |= CACHE_FLAG_DIRTY;
}
else
j -= clink->u.inode->data[fixIndex(i)].count;
}
pfree->u.inode->number_data = i;
pfree->u.inode->number_blocks = zones + nextsegdesc;
pfree->u.inode->number_segdesg = nextsegdesc;
pfree->u.inode->last_segment.number = clink->u.inode->data[0].number;
pfree->u.inode->last_segment.subpart= clink->u.inode->data[0].subpart;
pfree->u.inode->last_segment.count = clink->u.inode->data[0].count;
pfree->flags |= CACHE_FLAG_DIRTY;
if (b.number)
bitmapFreeBlockSegment(pfsMount, &b);
while(i < limit)
{
if (fixIndex(i) == 0)
{
if((clink = blockGetNextSegment(clink, &result)) == 0)
return;
}
bi = &clink->u.inode->data[fixIndex(i++)];
bitmapFreeBlockSegment(pfsMount, bi);
cacheMarkClean(pfsMount, bi->subpart, bi->number<<pfsMount->inode_scale,
(bi->number+bi->count)<<pfsMount->inode_scale);
}
cacheAdd(clink);
}
