diff options
| -rw-r--r-- | block/vmdk.c | 29 | ||||
| -rw-r--r-- | qapi/block-core.json | 3 | ||||
| -rwxr-xr-x | tests/qemu-iotests/237 | 6 | ||||
| -rw-r--r-- | tests/qemu-iotests/237.out | 13 |
4 files changed, 38 insertions, 13 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index 5a162ee85c..682ad93aa1 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1970,6 +1970,7 @@ static int coroutine_fn vmdk_co_do_create(int64_t size, { int extent_idx; BlockBackend *blk = NULL; + BlockBackend *extent_blk; Error *local_err = NULL; char *desc = NULL; int ret = 0; @@ -2107,7 +2108,6 @@ static int coroutine_fn vmdk_co_do_create(int64_t size, } extent_idx = 1; while (created_size < size) { - BlockBackend *extent_blk; int64_t cur_size = MIN(size - created_size, extent_size); extent_blk = extent_fn(cur_size, extent_idx, flat, split, compress, zeroed_grain, opaque, errp); @@ -2121,6 +2121,17 @@ static int coroutine_fn vmdk_co_do_create(int64_t size, extent_idx++; blk_unref(extent_blk); } + + /* Check whether we got excess extents */ + extent_blk = extent_fn(-1, extent_idx, flat, split, compress, zeroed_grain, + opaque, NULL); + if (extent_blk) { + blk_unref(extent_blk); + error_setg(errp, "List of extents contains unused extents"); + ret = -EINVAL; + goto exit; + } + /* generate descriptor file */ desc = g_strdup_printf(desc_template, g_random_int(), @@ -2181,6 +2192,12 @@ static BlockBackend *vmdk_co_create_opts_cb(int64_t size, int idx, char *ext_filename = NULL; char *rel_filename = NULL; + /* We're done, don't create excess extents. */ + if (size == -1) { + assert(errp == NULL); + return NULL; + } + if (idx == 0) { rel_filename = g_strdup_printf("%s%s", data->prefix, data->postfix); } else if (split) { @@ -2342,10 +2359,12 @@ static BlockBackend *vmdk_co_create_cb(int64_t size, int idx, blk_set_allow_write_beyond_eof(blk, true); bdrv_unref(bs); - ret = vmdk_init_extent(blk, size, flat, compress, zeroed_grain, errp); - if (ret) { - blk_unref(blk); - blk = NULL; + if (size != -1) { + ret = vmdk_init_extent(blk, size, flat, compress, zeroed_grain, errp); + if (ret) { + blk_unref(blk); + blk = NULL; + } } return blk; } diff --git a/qapi/block-core.json b/qapi/block-core.json index a5924b40af..5f17d67d71 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4184,7 +4184,8 @@ # twoGbMaxExtentSparse and twoGbMaxExtentFlat formats. For # monolithicFlat, only one entry is required; for # twoGbMaxExtent* formats, the number of entries required is -# calculated as extent_number = virtual_size / 2GB. +# calculated as extent_number = virtual_size / 2GB. Providing +# more extents than will be used is an error. # @subformat The subformat of the VMDK image. Default: "monolithicSparse". # @backing-file The path of backing file. Default: no backing file is used. # @adapter-type The adapter type used to fill in the descriptor. Default: ide. diff --git a/tests/qemu-iotests/237 b/tests/qemu-iotests/237 index e04a1ac6be..251771d7fb 100755 --- a/tests/qemu-iotests/237 +++ b/tests/qemu-iotests/237 @@ -20,6 +20,7 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. # +import math import iotests from iotests import imgfmt @@ -222,12 +223,15 @@ with iotests.FilePath('t.vmdk') as disk_path, \ iotests.log("= %s %d =" % (subfmt, size)) iotests.log("") + num_extents = math.ceil(size / 2.0**31) + extents = [ "ext%d" % (i) for i in range(1, num_extents + 1) ] + vm.launch() blockdev_create(vm, { 'driver': imgfmt, 'file': 'node0', 'size': size, 'subformat': subfmt, - 'extents': ['ext1', 'ext2', 'ext3'] }) + 'extents': extents }) vm.shutdown() iotests.img_info_log(disk_path) diff --git a/tests/qemu-iotests/237.out b/tests/qemu-iotests/237.out index 1aa9aad349..241c864369 100644 --- a/tests/qemu-iotests/237.out +++ b/tests/qemu-iotests/237.out @@ -154,6 +154,7 @@ Job failed: Extent [0] not specified {"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1", "ext2", "ext3"], "file": "node0", "size": 512, "subformat": "monolithicFlat"}}} {"return": {}} +Job failed: List of extents contains unused extents {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} @@ -161,7 +162,7 @@ Job failed: Extent [0] not specified = twoGbMaxExtentFlat 512 = -{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1", "ext2", "ext3"], "file": "node0", "size": 512, "subformat": "twoGbMaxExtentFlat"}}} +{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1"], "file": "node0", "size": 512, "subformat": "twoGbMaxExtentFlat"}}} {"return": {}} {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} @@ -181,7 +182,7 @@ Format specific information: = twoGbMaxExtentSparse 512 = -{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1", "ext2", "ext3"], "file": "node0", "size": 512, "subformat": "twoGbMaxExtentSparse"}}} +{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1"], "file": "node0", "size": 512, "subformat": "twoGbMaxExtentSparse"}}} {"return": {}} {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} @@ -203,7 +204,7 @@ Format specific information: = twoGbMaxExtentFlat 1073741824 = -{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1", "ext2", "ext3"], "file": "node0", "size": 1073741824, "subformat": "twoGbMaxExtentFlat"}}} +{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1"], "file": "node0", "size": 1073741824, "subformat": "twoGbMaxExtentFlat"}}} {"return": {}} {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} @@ -223,7 +224,7 @@ Format specific information: = twoGbMaxExtentSparse 1073741824 = -{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1", "ext2", "ext3"], "file": "node0", "size": 1073741824, "subformat": "twoGbMaxExtentSparse"}}} +{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1"], "file": "node0", "size": 1073741824, "subformat": "twoGbMaxExtentSparse"}}} {"return": {}} {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} @@ -245,7 +246,7 @@ Format specific information: = twoGbMaxExtentFlat 2147483648 = -{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1", "ext2", "ext3"], "file": "node0", "size": 2147483648, "subformat": "twoGbMaxExtentFlat"}}} +{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1"], "file": "node0", "size": 2147483648, "subformat": "twoGbMaxExtentFlat"}}} {"return": {}} {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} @@ -265,7 +266,7 @@ Format specific information: = twoGbMaxExtentSparse 2147483648 = -{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1", "ext2", "ext3"], "file": "node0", "size": 2147483648, "subformat": "twoGbMaxExtentSparse"}}} +{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vmdk", "extents": ["ext1"], "file": "node0", "size": 2147483648, "subformat": "twoGbMaxExtentSparse"}}} {"return": {}} {"execute": "job-dismiss", "arguments": {"id": "job0"}} {"return": {}} |