diff options
| -rw-r--r-- | block.c | 32 |
1 files changed, 26 insertions, 6 deletions
@@ -665,15 +665,18 @@ static int bdrv_open_flags(BlockDriverState *bs, int flags) /* * Common part for opening disk images and files + * + * Removes all processed options from *options. */ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file, - const char *filename, + const char *filename, QDict *options, int flags, BlockDriver *drv) { int ret, open_flags; assert(drv != NULL); assert(bs->file == NULL); + assert(options == NULL || bs->options != options); trace_bdrv_open_common(bs, filename, flags, drv->format_name); @@ -710,7 +713,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file, } else { assert(file != NULL); bs->file = file; - ret = drv->bdrv_open(bs, NULL, open_flags); + ret = drv->bdrv_open(bs, options, open_flags); } if (ret < 0) { @@ -752,7 +755,7 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags) } bs = bdrv_new(""); - ret = bdrv_open_common(bs, NULL, filename, flags, drv); + ret = bdrv_open_common(bs, NULL, filename, NULL, flags, drv); if (ret < 0) { bdrv_delete(bs); return ret; @@ -821,6 +824,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, } bs->options = options; + options = qdict_clone_shallow(options); /* For snapshot=on, create a temporary qcow2 overlay */ if (flags & BDRV_O_SNAPSHOT) { @@ -903,7 +907,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, } /* Open the image */ - ret = bdrv_open_common(bs, file, filename, flags, drv); + ret = bdrv_open_common(bs, file, filename, options, flags, drv); if (ret < 0) { goto unlink_and_fail; } @@ -917,11 +921,22 @@ int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, if ((flags & BDRV_O_NO_BACKING) == 0) { ret = bdrv_open_backing_file(bs); if (ret < 0) { - bdrv_close(bs); - return ret; + goto close_and_fail; } } + /* Check if any unknown options were used */ + if (qdict_size(options) != 0) { + const QDictEntry *entry = qdict_first(options); + qerror_report(ERROR_CLASS_GENERIC_ERROR, "Block format '%s' used by " + "device '%s' doesn't support the option '%s'", + drv->format_name, bs->device_name, entry->key); + + ret = -EINVAL; + goto close_and_fail; + } + QDECREF(options); + if (!bdrv_key_required(bs)) { bdrv_dev_change_media_cb(bs, true); } @@ -942,8 +957,13 @@ unlink_and_fail: } fail: QDECREF(bs->options); + QDECREF(options); bs->options = NULL; + return ret; +close_and_fail: + bdrv_close(bs); + QDECREF(options); return ret; } |