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block: Add error parameter to blk_insert_bs()

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Now that blk_insert_bs() requests the BlockBackend permissions for the
node it attaches to, it can fail. Instead of aborting, pass the errors
to the callers.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
This commit is contained in:
Kevin Wolf 2017-01-13 19:02:32 +01:00
parent 6d0eb64d5c
commit d7086422b1
14 changed files with 100 additions and 29 deletions
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5
block.c
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@ -2194,8 +2194,11 @@ static BlockDriverState *bdrv_open_inherit(const char *filename,
}
if (file_bs != NULL) {
file = blk_new(BLK_PERM_CONSISTENT_READ, BLK_PERM_ALL);
blk_insert_bs(file, file_bs);
blk_insert_bs(file, file_bs, &local_err);
bdrv_unref(file_bs);
if (local_err) {
goto fail;
}
qdict_put(options, "file",
qstring_from_str(bdrv_get_node_name(file_bs)));