Commonly, they need to pass the BDRV_CHILD_IMAGE set as the BdrvChildRole; but there are exceptions for drivers with external data files (qcow2 and vmdk).
Signed-off-by: Max Reitz <mre...@redhat.com> Reviewed-by: Eric Blake <ebl...@redhat.com> --- block/bochs.c | 4 ++-- block/cloop.c | 4 ++-- block/crypto.c | 4 ++-- block/dmg.c | 4 ++-- block/parallels.c | 4 ++-- block/qcow.c | 4 ++-- block/qcow2.c | 19 +++++++++++++------ block/qed.c | 4 ++-- block/vdi.c | 4 ++-- block/vhdx.c | 4 ++-- block/vmdk.c | 20 +++++++++++++++++--- block/vpc.c | 4 ++-- 12 files changed, 50 insertions(+), 29 deletions(-) diff --git a/block/bochs.c b/block/bochs.c index b013e73063..62c3f42548 100644 --- a/block/bochs.c +++ b/block/bochs.c @@ -110,8 +110,8 @@ static int bochs_open(BlockDriverState *bs, QDict *options, int flags, return ret; } - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/cloop.c b/block/cloop.c index 3ed9fa63cc..d374a8427d 100644 --- a/block/cloop.c +++ b/block/cloop.c @@ -71,8 +71,8 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags, return ret; } - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/crypto.c b/block/crypto.c index 4da74a7737..2d85d9e70a 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -200,8 +200,8 @@ static int block_crypto_open_generic(QCryptoBlockFormat format, unsigned int cflags = 0; QDict *cryptoopts = NULL; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/dmg.c b/block/dmg.c index af8188638c..bc64194577 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -439,8 +439,8 @@ static int dmg_open(BlockDriverState *bs, QDict *options, int flags, return ret; } - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/parallels.c b/block/parallels.c index 3d5b3b7c63..7dc9a1fa76 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -728,8 +728,8 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags, Error *local_err = NULL; char *buf; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/qcow.c b/block/qcow.c index 2bf8e8eb36..bc7f7c1054 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -130,8 +130,8 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags, qdict_extract_subqdict(options, &encryptopts, "encrypt."); encryptfmt = qdict_get_try_str(encryptopts, "format"); - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { ret = -EINVAL; goto fail; diff --git a/block/qcow2.c b/block/qcow2.c index 2ce974df4d..7e1532cc5e 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1537,8 +1537,9 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, } /* Open external data file */ - s->data_file = bdrv_open_child(NULL, options, "data-file", bs, &child_file, - 0, true, &local_err); + s->data_file = bdrv_open_child(NULL, options, "data-file", bs, + &child_of_bds, BDRV_CHILD_DATA, + true, &local_err); if (local_err) { error_propagate(errp, local_err); ret = -EINVAL; @@ -1548,8 +1549,8 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, if (s->incompatible_features & QCOW2_INCOMPAT_DATA_FILE) { if (!s->data_file && s->image_data_file) { s->data_file = bdrv_open_child(s->image_data_file, options, - "data-file", bs, &child_file, 0, - false, errp); + "data-file", bs, &child_of_bds, + BDRV_CHILD_DATA, false, errp); if (!s->data_file) { ret = -EINVAL; goto fail; @@ -1560,6 +1561,12 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, ret = -EINVAL; goto fail; } + + /* No data here */ + bs->file->role &= ~BDRV_CHILD_DATA; + + /* Must succeed because we have given up permissions if anything */ + bdrv_child_refresh_perms(bs, bs->file, &error_abort); } else { if (s->data_file) { error_setg(errp, "'data-file' can only be set for images with an " @@ -1808,8 +1815,8 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, .ret = -EINPROGRESS }; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/qed.c b/block/qed.c index d15ba11959..d6222798c2 100644 --- a/block/qed.c +++ b/block/qed.c @@ -547,8 +547,8 @@ static int bdrv_qed_open(BlockDriverState *bs, QDict *options, int flags, .ret = -EINPROGRESS }; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/vdi.c b/block/vdi.c index 987e2ed592..1736d02eee 100644 --- a/block/vdi.c +++ b/block/vdi.c @@ -378,8 +378,8 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags, Error *local_err = NULL; QemuUUID uuid_link, uuid_parent; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/vhdx.c b/block/vhdx.c index be23290ac8..d8a315015d 100644 --- a/block/vhdx.c +++ b/block/vhdx.c @@ -997,8 +997,8 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags, uint64_t signature; Error *local_err = NULL; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } diff --git a/block/vmdk.c b/block/vmdk.c index 84f99d881f..497414e5f2 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1089,6 +1089,7 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, char *desc_file_dir = NULL; char *extent_path; BdrvChild *extent_file; + BdrvChildRole extent_role; BDRVVmdkState *s = bs->opaque; VmdkExtent *extent; char extent_opt_prefix[32]; @@ -1151,8 +1152,15 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, ret = snprintf(extent_opt_prefix, 32, "extents.%d", s->num_extents); assert(ret < 32); + extent_role = BDRV_CHILD_DATA; + if (strcmp(type, "FLAT") != 0 && strcmp(type, "VMFS") != 0) { + /* non-flat extents have metadata */ + extent_role |= BDRV_CHILD_METADATA; + } + extent_file = bdrv_open_child(extent_path, options, extent_opt_prefix, - bs, &child_file, 0, false, &local_err); + bs, &child_of_bds, extent_role, false, + &local_err); g_free(extent_path); if (local_err) { error_propagate(errp, local_err); @@ -1257,8 +1265,8 @@ static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, uint32_t magic; Error *local_err = NULL; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } @@ -1277,6 +1285,12 @@ static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, s->desc_offset = 0x200; break; default: + /* No data in the descriptor file */ + bs->file->role &= ~BDRV_CHILD_DATA; + + /* Must succeed because we have given up permissions if anything */ + bdrv_child_refresh_perms(bs, bs->file, &error_abort); + ret = vmdk_open_desc_file(bs, flags, buf, options, errp); break; } diff --git a/block/vpc.c b/block/vpc.c index 5378e32d1d..9acd6edac9 100644 --- a/block/vpc.c +++ b/block/vpc.c @@ -228,8 +228,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags, int ret; int64_t bs_size; - bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, 0, - false, errp); + bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds, + BDRV_CHILD_IMAGE, false, errp); if (!bs->file) { return -EINVAL; } -- 2.24.1