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parallels: respect error code of bdrv_getlength() in allocate_clusters()

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If we can not get the file length, the state of BDS is broken completely.
Return error to the caller.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Markus Armbruster <armbru@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Denis V. Lunev 2017-08-04 18:10:12 +03:00 committed by Kevin Wolf
parent 70d9110b44
commit d8b83e37c3
1 changed files with 6 additions and 2 deletions
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8
block/parallels.c
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@ -192,7 +192,7 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
int nb_sectors, int *pnum)
{
BDRVParallelsState *s = bs->opaque;
int64_t pos, space, idx, to_allocate, i;
int64_t pos, space, idx, to_allocate, i, len;
pos = block_status(s, sector_num, nb_sectors, pnum);
if (pos > 0) {
@ -214,7 +214,11 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
assert(idx < s->bat_size && idx + to_allocate <= s->bat_size);
space = to_allocate * s->tracks;
if (s->data_end + space > bdrv_getlength(bs->file->bs) >> BDRV_SECTOR_BITS) {
len = bdrv_getlength(bs->file->bs);
if (len < 0) {
return len;
}
if (s->data_end + space > (len >> BDRV_SECTOR_BITS)) {
int ret;
space += s->prealloc_size;
if (s->prealloc_mode == PRL_PREALLOC_MODE_FALLOCATE) {