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| author | Kevin Wolf <kwolf@redhat.com> | 2020-09-24 17:26:52 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-10-02 15:46:40 +0200 |
| commit | b57e4de079d90caca05fed5b45aeb642c6c29aa0 (patch) | |
| tree | b76720bec980669ca9e4ee67aa92382e9a00ea5e /include/block | |
| parent | 060102ad655544501b9d0d9f3fc8b8675883b463 (diff) | |
| download | qemu-b57e4de079d90caca05fed5b45aeb642c6c29aa0.zip qemu-b57e4de079d90caca05fed5b45aeb642c6c29aa0.tar.gz qemu-b57e4de079d90caca05fed5b45aeb642c6c29aa0.tar.bz2 | |
qemu-nbd: Use raw block driver for --offset
Instead of implementing qemu-nbd --offset in the NBD code, just put a
raw block node with the requested offset on top of the user image and
rely on that doing the job.
This does not only simplify the nbd_export_new() interface and bring it
closer to the set of options that the nbd-server-add QMP command offers,
but in fact it also eliminates a potential source for bugs in the NBD
code which previously had to add the offset manually in all relevant
places.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-7-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/block')
| -rw-r--r-- | include/block/nbd.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/block/nbd.h b/include/block/nbd.h index 7698453..451f399 100644 --- a/include/block/nbd.h +++ b/include/block/nbd.h @@ -331,8 +331,8 @@ typedef struct NBDExport NBDExport; typedef struct NBDClient NBDClient; BlockExport *nbd_export_create(BlockExportOptions *exp_args, Error **errp); -NBDExport *nbd_export_new(BlockDriverState *bs, uint64_t dev_offset, - uint64_t size, const char *name, const char *desc, +NBDExport *nbd_export_new(BlockDriverState *bs, + const char *name, const char *desc, const char *bitmap, bool readonly, bool shared, void (*close)(NBDExport *), bool writethrough, BlockBackend *on_eject_blk, Error **errp); |