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[Qemu-block] [PATCH v2 06/21] block: Exclude nested options only for chi
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PATCH v2 06/21] block: Exclude nested options only for children in append_open_options() |
Date: |
Mon, 23 Nov 2015 16:59:45 +0100 |
Some drivers have nested options (e.g. blkdebug rule arrays), which
don't belong to a child node and shouldn't be removed. Don't remove all
options with "." in their name, but check for the complete prefixes of
actually existing child nodes.
Signed-off-by: Kevin Wolf <address@hidden>
---
block.c | 19 +++++++++++++++----
include/block/block_int.h | 1 +
2 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/block.c b/block.c
index 23d9e10..02125e2 100644
--- a/block.c
+++ b/block.c
@@ -1101,11 +1101,13 @@ static int bdrv_fill_options(QDict **options, const
char **pfilename,
static BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs,
BlockDriverState *child_bs,
+ const char *child_name,
const BdrvChildRole *child_role)
{
BdrvChild *child = g_new(BdrvChild, 1);
*child = (BdrvChild) {
.bs = child_bs,
+ .name = child_name,
.role = child_role,
};
@@ -1165,7 +1167,7 @@ void bdrv_set_backing_hd(BlockDriverState *bs,
BlockDriverState *backing_hd)
bs->backing = NULL;
goto out;
}
- bs->backing = bdrv_attach_child(bs, backing_hd, &child_backing);
+ bs->backing = bdrv_attach_child(bs, backing_hd, "backing", &child_backing);
bs->open_flags &= ~BDRV_O_NO_BACKING;
pstrcpy(bs->backing_file, sizeof(bs->backing_file), backing_hd->filename);
pstrcpy(bs->backing_format, sizeof(bs->backing_format),
@@ -1322,7 +1324,7 @@ BdrvChild *bdrv_open_child(const char *filename,
goto done;
}
- c = bdrv_attach_child(parent, bs, child_role);
+ c = bdrv_attach_child(parent, bs, bdref_key, child_role);
done:
qdict_del(options, bdref_key);
@@ -3952,13 +3954,22 @@ static bool append_open_options(QDict *d,
BlockDriverState *bs)
{
const QDictEntry *entry;
QemuOptDesc *desc;
+ BdrvChild *child;
bool found_any = false;
+ const char *p;
for (entry = qdict_first(bs->options); entry;
entry = qdict_next(bs->options, entry))
{
- /* Only take options for this level */
- if (strchr(qdict_entry_key(entry), '.')) {
+ /* Exclude options for children */
+ QLIST_FOREACH(child, &bs->children, next) {
+ if (strstart(qdict_entry_key(entry), child->name, &p)
+ && (!*p || *p == '.'))
+ {
+ break;
+ }
+ }
+ if (child) {
continue;
}
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 77dc165..b2325aa 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -351,6 +351,7 @@ extern const BdrvChildRole child_format;
struct BdrvChild {
BlockDriverState *bs;
+ const char *name;
const BdrvChildRole *role;
QLIST_ENTRY(BdrvChild) next;
QLIST_ENTRY(BdrvChild) next_parent;
--
1.8.3.1