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parallels: respect error code of bdrv_getlength() in allocate_clusters()
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>
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@ -192,7 +192,7 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
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int nb_sectors, int *pnum)
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{
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BDRVParallelsState *s = bs->opaque;
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int64_t pos, space, idx, to_allocate, i;
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int64_t pos, space, idx, to_allocate, i, len;
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pos = block_status(s, sector_num, nb_sectors, pnum);
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if (pos > 0) {
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@ -214,7 +214,11 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
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assert(idx < s->bat_size && idx + to_allocate <= s->bat_size);
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space = to_allocate * s->tracks;
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if (s->data_end + space > bdrv_getlength(bs->file->bs) >> BDRV_SECTOR_BITS) {
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len = bdrv_getlength(bs->file->bs);
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if (len < 0) {
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return len;
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}
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if (s->data_end + space > (len >> BDRV_SECTOR_BITS)) {
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int ret;
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space += s->prealloc_size;
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if (s->prealloc_mode == PRL_PREALLOC_MODE_FALLOCATE) {
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