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block: Keep "filename" option after parsing 

Currently, bdrv_file_open() always removes the "filename" option from
the options QDict after bdrv_parse_filename() has been (successfully)
called. However, for drivers with bdrv_needs_filename, it makes more
sense for bdrv_parse_filename() to overwrite the "filename" option and
for bdrv_file_open() to fetch the filename from there.

Since there currently are no drivers that implement
bdrv_parse_filename() and have bdrv_needs_filename set, this does not
change current behavior.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-03-05 22:41:36 +01:00 committed by Kevin Wolf
parent 50c75136be
commit cd5d031e75
1 changed files with 6 additions and 1 deletions
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7
block.c
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@ -1017,7 +1017,12 @@ static int bdrv_file_open(BlockDriverState *bs, const char *filename,
ret = -EINVAL;
goto fail;
}
qdict_del(*options, "filename");
if (!drv->bdrv_needs_filename) {
qdict_del(*options, "filename");
} else {
filename = qdict_get_str(*options, "filename");
}
}
if (!drv->bdrv_file_open) {