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-rw-r--r--block/bochs.c1
-rw-r--r--block/cloop.c1
-rw-r--r--block/crypto.c2
-rw-r--r--block/dmg.c1
-rw-r--r--block/parallels.c1
-rw-r--r--block/qcow.c1
-rw-r--r--block/qcow2.c1
-rw-r--r--block/qed.c1
-rw-r--r--block/raw-format.c1
-rw-r--r--block/vdi.c1
-rw-r--r--block/vhdx.c1
-rw-r--r--block/vmdk.c1
-rw-r--r--block/vpc.c1
-rw-r--r--include/block/block_int.h7
14 files changed, 21 insertions, 0 deletions
diff --git a/block/bochs.c b/block/bochs.c
index 32bb83b268..e7bbeaa1c4 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -301,6 +301,7 @@ static BlockDriver bdrv_bochs = {
.bdrv_refresh_limits = bochs_refresh_limits,
.bdrv_co_preadv = bochs_co_preadv,
.bdrv_close = bochs_close,
+ .is_format = true,
};
static void bdrv_bochs_init(void)
diff --git a/block/cloop.c b/block/cloop.c
index 4de94876d4..f90f1a4b4c 100644
--- a/block/cloop.c
+++ b/block/cloop.c
@@ -297,6 +297,7 @@ static BlockDriver bdrv_cloop = {
.bdrv_refresh_limits = cloop_refresh_limits,
.bdrv_co_preadv = cloop_co_preadv,
.bdrv_close = cloop_close,
+ .is_format = true,
};
static void bdrv_cloop_init(void)
diff --git a/block/crypto.c b/block/crypto.c
index 6b21d6bf6c..bdb2b27475 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -771,6 +771,8 @@ static BlockDriver bdrv_crypto_luks = {
.bdrv_get_info = block_crypto_get_info_luks,
.bdrv_get_specific_info = block_crypto_get_specific_info_luks,
+ .is_format = true,
+
.strong_runtime_opts = block_crypto_strong_runtime_opts,
};
diff --git a/block/dmg.c b/block/dmg.c
index 4a045f2b3e..ef3c6e771d 100644
--- a/block/dmg.c
+++ b/block/dmg.c
@@ -753,6 +753,7 @@ static BlockDriver bdrv_dmg = {
.bdrv_child_perm = bdrv_format_default_perms,
.bdrv_co_preadv = dmg_co_preadv,
.bdrv_close = dmg_close,
+ .is_format = true,
};
static void bdrv_dmg_init(void)
diff --git a/block/parallels.c b/block/parallels.c
index e7717c508e..bd5f6ffa09 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -918,6 +918,7 @@ static BlockDriver bdrv_parallels = {
.bdrv_co_flush_to_os = parallels_co_flush_to_os,
.bdrv_co_readv = parallels_co_readv,
.bdrv_co_writev = parallels_co_writev,
+ .is_format = true,
.supports_backing = true,
.bdrv_co_create = parallels_co_create,
.bdrv_co_create_opts = parallels_co_create_opts,
diff --git a/block/qcow.c b/block/qcow.c
index b0475b73a5..6a72dea049 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -1185,6 +1185,7 @@ static BlockDriver bdrv_qcow = {
.bdrv_co_create = qcow_co_create,
.bdrv_co_create_opts = qcow_co_create_opts,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
+ .is_format = true,
.supports_backing = true,
.bdrv_refresh_limits = qcow_refresh_limits,
diff --git a/block/qcow2.c b/block/qcow2.c
index ad9ab4fafa..76bec61ee9 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -5767,6 +5767,7 @@ BlockDriver bdrv_qcow2 = {
.bdrv_save_vmstate = qcow2_save_vmstate,
.bdrv_load_vmstate = qcow2_load_vmstate,
+ .is_format = true,
.supports_backing = true,
.bdrv_change_backing_file = qcow2_change_backing_file,
diff --git a/block/qed.c b/block/qed.c
index 5da9726518..337eb6dbb6 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -1665,6 +1665,7 @@ static BlockDriver bdrv_qed = {
.format_name = "qed",
.instance_size = sizeof(BDRVQEDState),
.create_opts = &qed_create_opts,
+ .is_format = true,
.supports_backing = true,
.bdrv_probe = bdrv_qed_probe,
diff --git a/block/raw-format.c b/block/raw-format.c
index 9108e43696..00e13bb41e 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -566,6 +566,7 @@ BlockDriver bdrv_raw = {
.bdrv_co_copy_range_to = &raw_co_copy_range_to,
.bdrv_co_truncate = &raw_co_truncate,
.bdrv_getlength = &raw_getlength,
+ .is_format = true,
.has_variable_length = true,
.bdrv_measure = &raw_measure,
.bdrv_get_info = &raw_get_info,
diff --git a/block/vdi.c b/block/vdi.c
index 2d28046615..0ef733ae19 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -1053,6 +1053,7 @@ static BlockDriver bdrv_vdi = {
.bdrv_get_info = vdi_get_info,
+ .is_format = true,
.create_opts = &vdi_create_opts,
.bdrv_co_check = vdi_co_check,
};
diff --git a/block/vhdx.c b/block/vhdx.c
index 53e756438a..e692cf80cc 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -2254,6 +2254,7 @@ static BlockDriver bdrv_vhdx = {
.bdrv_co_check = vhdx_co_check,
.bdrv_has_zero_init = vhdx_has_zero_init,
+ .is_format = true,
.create_opts = &vhdx_create_opts,
};
diff --git a/block/vmdk.c b/block/vmdk.c
index b18f128816..56e85689f3 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -3070,6 +3070,7 @@ static BlockDriver bdrv_vmdk = {
.bdrv_get_info = vmdk_get_info,
.bdrv_gather_child_options = vmdk_gather_child_options,
+ .is_format = true,
.supports_backing = true,
.create_opts = &vmdk_create_opts,
};
diff --git a/block/vpc.c b/block/vpc.c
index 5e31dd1e47..46a2d48659 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -1250,6 +1250,7 @@ static BlockDriver bdrv_vpc = {
.bdrv_get_info = vpc_get_info,
+ .is_format = true,
.create_opts = &vpc_create_opts,
.bdrv_has_zero_init = vpc_has_zero_init,
.strong_runtime_opts = vpc_strong_runtime_opts,
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 7ba8c89036..1c24df53fd 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -96,6 +96,13 @@ struct BlockDriver {
*/
bool is_filter;
/*
+ * Set to true if the BlockDriver is a format driver. Format nodes
+ * generally do not expect their children to be other format nodes
+ * (except for backing files), and so format probing is disabled
+ * on those children.
+ */
+ bool is_format;
+ /*
* Return true if @to_replace can be replaced by a BDS with the
* same data as @bs without it affecting @bs's behavior (that is,
* without it being visible to @bs's parents).