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qdict: Extract qdict_extract_subqdict 

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Benoît Canet 2013-09-25 13:30:01 +02:00 committed by Kevin Wolf
parent c3e4f43a99
commit 5726d872f3
3 changed files with 25 additions and 21 deletions
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23
block.c
View File

@ -1007,25 +1007,6 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp)
return 0;
}
static void extract_subqdict(QDict *src, QDict **dst, const char *start)
{
const QDictEntry *entry, *next;
const char *p;
*dst = qdict_new();
entry = qdict_first(src);
while (entry != NULL) {
next = qdict_next(src, entry);
if (strstart(entry->key, start, &p)) {
qobject_incref(entry->value);
qdict_put_obj(*dst, p, entry->value);
qdict_del(src, entry->key);
}
entry = next;
}
}
/*
* Opens a disk image (raw, qcow2, vmdk, ...)
*
@ -1131,7 +1112,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
flags |= BDRV_O_ALLOW_RDWR;
}
extract_subqdict(options, &file_options, "file.");
qdict_extract_subqdict(options, &file_options, "file.");
ret = bdrv_file_open(&file, filename, file_options,
bdrv_open_flags(bs, flags | BDRV_O_UNMAP), &local_err);
@ -1169,7 +1150,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options,
if ((flags & BDRV_O_NO_BACKING) == 0) {
QDict *backing_options;
extract_subqdict(options, &backing_options, "backing.");
qdict_extract_subqdict(options, &backing_options, "backing.");
ret = bdrv_open_backing_file(bs, backing_options, &local_err);
if (ret < 0) {
goto close_and_fail;

2
include/qapi/qmp/qdict.h
View File

@ -67,4 +67,6 @@ const char *qdict_get_try_str(const QDict *qdict, const char *key);
QDict *qdict_clone_shallow(const QDict *src);
void qdict_flatten(QDict *qdict);
void qdict_extract_subqdict(QDict *src, QDict **dst, const char *start);
#endif /* QDICT_H */

21
qobject/qdict.c
View File

@ -527,3 +527,24 @@ void qdict_flatten(QDict *qdict)
{
qdict_do_flatten(qdict, qdict, NULL);
}
/* extract all the src QDict entries starting by start into dst */
void qdict_extract_subqdict(QDict *src, QDict **dst, const char *start)
{
const QDictEntry *entry, *next;
const char *p;
*dst = qdict_new();
entry = qdict_first(src);
while (entry != NULL) {
next = qdict_next(src, entry);
if (strstart(entry->key, start, &p)) {
qobject_incref(entry->value);
qdict_put_obj(*dst, p, entry->value);
qdict_del(src, entry->key);
}
entry = next;
}
}