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block: Reuse reference handling from bdrv_open() 

Remove the reference parameter and the related handling code from
bdrv_file_open(), since it exists in bdrv_open() now as well.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-02-18 18:33:08 +01:00 committed by Kevin Wolf
parent 2e40134bfd
commit 5d12aa63c7
1 changed files with 7 additions and 25 deletions
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32
block.c
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@ -961,8 +961,7 @@ free_and_fail:
* dictionary, it needs to use QINCREF() before calling bdrv_file_open. * dictionary, it needs to use QINCREF() before calling bdrv_file_open.
*/ */
static int bdrv_file_open(BlockDriverState **pbs, const char *filename, static int bdrv_file_open(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags, QDict *options, int flags, Error **errp)
Error **errp)
{ {
BlockDriverState *bs = NULL; BlockDriverState *bs = NULL;
BlockDriver *drv; BlockDriver *drv;
@ -976,23 +975,6 @@ static int bdrv_file_open(BlockDriverState **pbs, const char *filename,
options = qdict_new(); options = qdict_new();
} }
if (reference) {
if (filename || qdict_size(options)) {
error_setg(errp, "Cannot reference an existing block device with "
"additional options or a new filename");
return -EINVAL;
}
QDECREF(options);
bs = bdrv_lookup_bs(reference, reference, errp);
if (!bs) {
return -ENODEV;
}
bdrv_ref(bs);
*pbs = bs;
return 0;
}
bs = bdrv_new(""); bs = bdrv_new("");
bs->options = options; bs->options = options;
options = qdict_clone_shallow(options); options = qdict_clone_shallow(options);
@ -1245,12 +1227,6 @@ int bdrv_open(BlockDriverState **pbs, const char *filename,
assert(pbs); assert(pbs);
if (flags & BDRV_O_PROTOCOL) {
assert(!drv);
return bdrv_file_open(pbs, filename, reference, options,
flags & ~BDRV_O_PROTOCOL, errp);
}
if (reference) { if (reference) {
bool options_non_empty = options ? qdict_size(options) : false; bool options_non_empty = options ? qdict_size(options) : false;
QDECREF(options); QDECREF(options);
@ -1276,6 +1252,12 @@ int bdrv_open(BlockDriverState **pbs, const char *filename,
return 0; return 0;
} }
if (flags & BDRV_O_PROTOCOL) {
assert(!drv);
return bdrv_file_open(pbs, filename, options, flags & ~BDRV_O_PROTOCOL,
errp);
}
if (*pbs) { if (*pbs) {
bs = *pbs; bs = *pbs;
} else { } else {