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| author | Denis V. Lunev <den@openvz.org> | 2017-08-04 18:10:12 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-08-08 15:19:16 +0200 |
| commit | d8b83e37c381cf86ecd907301b7dcc65baaa0aea (patch) | |
| tree | 06e7aee6e0864e40ae294f5914bc453cfaa74670 | |
| parent | 70d9110b440e5252f637d54b5efd33bbc6237c1f (diff) | |
| download | focaccia-qemu-d8b83e37c381cf86ecd907301b7dcc65baaa0aea.tar.gz focaccia-qemu-d8b83e37c381cf86ecd907301b7dcc65baaa0aea.zip | |
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>
| -rw-r--r-- | block/parallels.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/block/parallels.c b/block/parallels.c index 5bbdfabb7a..6794e53c0b 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -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) { |