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[PATCH v3 06/33] block: Pass BdrvChildRole to .inherit_options()
From: |
Max Reitz |
Subject: |
[PATCH v3 06/33] block: Pass BdrvChildRole to .inherit_options() |
Date: |
Tue, 18 Feb 2020 13:42:15 +0100 |
For now, all callers (effectively) pass 0 and no callee evaluates thie
value. Later patches will change both.
Signed-off-by: Max Reitz <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
block.c | 40 +++++++++++++++++++++++----------------
block/block-backend.c | 3 ++-
block/vvfat.c | 3 ++-
include/block/block_int.h | 3 ++-
4 files changed, 30 insertions(+), 19 deletions(-)
diff --git a/block.c b/block.c
index bfeed6e8d9..9fc865288d 100644
--- a/block.c
+++ b/block.c
@@ -77,6 +77,7 @@ static BlockDriverState *bdrv_open_inherit(const char
*filename,
QDict *options, int flags,
BlockDriverState *parent,
const BdrvChildClass *child_class,
+ BdrvChildRole child_role,
Error **errp);
/* If non-zero, use only whitelisted block drivers */
@@ -1001,7 +1002,8 @@ static void bdrv_temp_snapshot_options(int *child_flags,
QDict *child_options,
* Returns the options and flags that bs->file should get if a protocol driver
* is expected, based on the given options and flags for the parent BDS
*/
-static void bdrv_inherited_options(int *child_flags, QDict *child_options,
+static void bdrv_inherited_options(BdrvChildRole role,
+ int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options)
{
int flags = parent_flags;
@@ -1050,10 +1052,11 @@ const BdrvChildClass child_file = {
* (and not only protocols) is permitted for it, based on the given options and
* flags for the parent BDS
*/
-static void bdrv_inherited_fmt_options(int *child_flags, QDict *child_options,
+static void bdrv_inherited_fmt_options(BdrvChildRole role,
+ int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options)
{
- child_file.inherit_options(child_flags, child_options,
+ child_file.inherit_options(role, child_flags, child_options,
parent_flags, parent_options);
*child_flags &= ~(BDRV_O_PROTOCOL | BDRV_O_NO_IO);
@@ -1134,7 +1137,8 @@ static void bdrv_backing_detach(BdrvChild *c)
* Returns the options and flags that bs->backing should get, based on the
* given options and flags for the parent BDS
*/
-static void bdrv_backing_options(int *child_flags, QDict *child_options,
+static void bdrv_backing_options(BdrvChildRole role,
+ int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options)
{
int flags = parent_flags;
@@ -2710,7 +2714,7 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict
*parent_options,
}
backing_hd = bdrv_open_inherit(backing_filename, reference, options, 0, bs,
- &child_backing, errp);
+ &child_backing, 0, errp);
if (!backing_hd) {
bs->open_flags |= BDRV_O_NO_BACKING;
error_prepend(errp, "Could not open backing file: ");
@@ -2745,7 +2749,7 @@ free_exit:
static BlockDriverState *
bdrv_open_child_bs(const char *filename, QDict *options, const char *bdref_key,
BlockDriverState *parent, const BdrvChildClass *child_class,
- bool allow_none, Error **errp)
+ BdrvChildRole child_role, bool allow_none, Error **errp)
{
BlockDriverState *bs = NULL;
QDict *image_options;
@@ -2776,7 +2780,7 @@ bdrv_open_child_bs(const char *filename, QDict *options,
const char *bdref_key,
}
bs = bdrv_open_inherit(filename, reference, image_options, 0,
- parent, child_class, errp);
+ parent, child_class, child_role, errp);
if (!bs) {
goto done;
}
@@ -2810,7 +2814,7 @@ BdrvChild *bdrv_open_child(const char *filename,
BlockDriverState *bs;
bs = bdrv_open_child_bs(filename, options, bdref_key, parent, child_class,
- allow_none, errp);
+ child_role, allow_none, errp);
if (bs == NULL) {
return NULL;
}
@@ -2859,7 +2863,7 @@ BlockDriverState *bdrv_open_blockdev_ref(BlockdevRef
*ref, Error **errp)
}
- bs = bdrv_open_inherit(NULL, reference, qdict, 0, NULL, NULL, errp);
+ bs = bdrv_open_inherit(NULL, reference, qdict, 0, NULL, NULL, 0, errp);
obj = NULL;
fail:
@@ -2958,6 +2962,7 @@ static BlockDriverState *bdrv_open_inherit(const char
*filename,
QDict *options, int flags,
BlockDriverState *parent,
const BdrvChildClass *child_class,
+ BdrvChildRole child_role,
Error **errp)
{
int ret;
@@ -3010,7 +3015,7 @@ static BlockDriverState *bdrv_open_inherit(const char
*filename,
if (child_class) {
bs->inherits_from = parent;
- child_class->inherit_options(&flags, options,
+ child_class->inherit_options(child_role, &flags, options,
parent->open_flags, parent->options);
}
@@ -3039,7 +3044,7 @@ static BlockDriverState *bdrv_open_inherit(const char
*filename,
flags, options);
/* Let bdrv_backing_options() override "read-only" */
qdict_del(options, BDRV_OPT_READ_ONLY);
- bdrv_backing_options(&flags, options, flags, options);
+ bdrv_backing_options(0, &flags, options, flags, options);
}
bs->open_flags = flags;
@@ -3081,7 +3086,7 @@ static BlockDriverState *bdrv_open_inherit(const char
*filename,
BlockDriverState *file_bs;
file_bs = bdrv_open_child_bs(filename, options, "file", bs,
- &child_file, true, &local_err);
+ &child_file, 0, true, &local_err);
if (local_err) {
goto fail;
}
@@ -3226,7 +3231,7 @@ BlockDriverState *bdrv_open(const char *filename, const
char *reference,
QDict *options, int flags, Error **errp)
{
return bdrv_open_inherit(filename, reference, options, flags, NULL,
- NULL, errp);
+ NULL, 0, errp);
}
/* Return true if the NULL-terminated @list contains @str */
@@ -3323,6 +3328,7 @@ static BlockReopenQueue
*bdrv_reopen_queue_child(BlockReopenQueue *bs_queue,
BlockDriverState *bs,
QDict *options,
const BdrvChildClass *klass,
+ BdrvChildRole role,
QDict *parent_options,
int parent_flags,
bool keep_old_opts)
@@ -3378,7 +3384,8 @@ static BlockReopenQueue
*bdrv_reopen_queue_child(BlockReopenQueue *bs_queue,
/* Inherit from parent node */
if (parent_options) {
flags = 0;
- klass->inherit_options(&flags, options, parent_flags, parent_options);
+ klass->inherit_options(role, &flags, options,
+ parent_flags, parent_options);
} else {
flags = bdrv_get_flags(bs);
}
@@ -3469,7 +3476,8 @@ static BlockReopenQueue
*bdrv_reopen_queue_child(BlockReopenQueue *bs_queue,
}
bdrv_reopen_queue_child(bs_queue, child->bs, new_child_options,
- child->klass, options, flags, child_keep_old);
+ child->klass, child->role, options, flags,
+ child_keep_old);
}
return bs_queue;
@@ -3479,7 +3487,7 @@ BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue
*bs_queue,
BlockDriverState *bs,
QDict *options, bool keep_old_opts)
{
- return bdrv_reopen_queue_child(bs_queue, bs, options, NULL, NULL, 0,
+ return bdrv_reopen_queue_child(bs_queue, bs, options, NULL, 0, NULL, 0,
keep_old_opts);
}
diff --git a/block/block-backend.c b/block/block-backend.c
index 4b79b2abb1..98f3167fa6 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -120,7 +120,8 @@ static QTAILQ_HEAD(, BlockBackend) block_backends =
static QTAILQ_HEAD(, BlockBackend) monitor_block_backends =
QTAILQ_HEAD_INITIALIZER(monitor_block_backends);
-static void blk_root_inherit_options(int *child_flags, QDict *child_options,
+static void blk_root_inherit_options(BdrvChildRole role,
+ int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options)
{
/* We're not supposed to call this function for root nodes */
diff --git a/block/vvfat.c b/block/vvfat.c
index 8e56513604..7ef2c9cdcc 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -3130,7 +3130,8 @@ static BlockDriver vvfat_write_target = {
.bdrv_co_pwritev = write_target_commit,
};
-static void vvfat_qcow_options(int *child_flags, QDict *child_options,
+static void vvfat_qcow_options(BdrvChildRole role,
+ int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options)
{
qdict_set_default_str(child_options, BDRV_OPT_READ_ONLY, "off");
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 826d1bf6bd..fbc1b90088 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -677,7 +677,8 @@ struct BdrvChildClass {
* non-BDS parents. */
bool parent_is_bds;
- void (*inherit_options)(int *child_flags, QDict *child_options,
+ void (*inherit_options)(BdrvChildRole role,
+ int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options);
void (*change_media)(BdrvChild *child, bool load);
--
2.24.1
- [PATCH v3 00/33] block: Introduce real BdrvChildRole, Max Reitz, 2020/02/18
- [PATCH v3 01/33] block: Add BlockDriver.is_format, Max Reitz, 2020/02/18
- [PATCH v3 03/33] block: Add BdrvChildRole and BdrvChildRoleBits, Max Reitz, 2020/02/18
- [PATCH v3 05/33] block: Pass BdrvChildRole to bdrv_child_perm(), Max Reitz, 2020/02/18
- [PATCH v3 04/33] block: Add BdrvChildRole to BdrvChild, Max Reitz, 2020/02/18
- [PATCH v3 02/33] block: Rename BdrvChildRole to BdrvChildClass, Max Reitz, 2020/02/18
- [PATCH v3 06/33] block: Pass BdrvChildRole to .inherit_options(),
Max Reitz <=
- [PATCH v3 07/33] block: Pass parent_is_format to .inherit_options(), Max Reitz, 2020/02/18
- [PATCH v3 08/33] block: Rename bdrv_inherited_options(), Max Reitz, 2020/02/18
- [PATCH v3 10/33] block: Use bdrv_inherited_options(), Max Reitz, 2020/02/18
- [PATCH v3 09/33] block: Add generic bdrv_inherited_options(), Max Reitz, 2020/02/18
- [PATCH v3 12/33] block: Unify bdrv_child_cb_detach(), Max Reitz, 2020/02/18
- [PATCH v3 11/33] block: Unify bdrv_child_cb_attach(), Max Reitz, 2020/02/18
- [PATCH v3 13/33] block: Add child_of_bds, Max Reitz, 2020/02/18
- [PATCH v3 14/33] block: Distinguish paths in *_format_default_perms, Max Reitz, 2020/02/18
- [PATCH v3 15/33] block: Pull out bdrv_default_perms_for_backing(), Max Reitz, 2020/02/18
- [PATCH v3 17/33] block: Split bdrv_default_perms_for_storage(), Max Reitz, 2020/02/18