diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2020-09-24 17:26:50 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-10-02 15:46:40 +0200 |
| commit | 56ee86261e0ffa151e82b383d9628cf5660be355 (patch) | |
| tree | c06329391f7c3e8095e71858930df7e21f9e3a6e /include/block | |
| parent | 143ea7670cbd3865f577602469b5483b550b4c5e (diff) | |
block/export: Add BlockExport infrastructure and block-export-add
We want to have a common set of commands for all types of block exports.
Currently, this is only NBD, but we're going to add more types.
This patch adds the basic BlockExport and BlockExportDriver structs and
a QMP command block-export-add that creates a new export based on the
given BlockExportOptions.
qmp_nbd_server_add() becomes a wrapper around qmp_block_export_add().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-5-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/block')
| -rw-r--r-- | include/block/export.h | 33 | ||||
| -rw-r--r-- | include/block/nbd.h | 5 |
2 files changed, 37 insertions, 1 deletions
diff --git a/include/block/export.h b/include/block/export.h new file mode 100644 index 0000000000..42e3c055fc --- /dev/null +++ b/include/block/export.h @@ -0,0 +1,33 @@ +/* + * Declarations for block exports + * + * Copyright (c) 2012, 2020 Red Hat, Inc. + * + * Authors: + * Paolo Bonzini <pbonzini@redhat.com> + * Kevin Wolf <kwolf@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * later. See the COPYING file in the top-level directory. + */ + +#ifndef BLOCK_EXPORT_H +#define BLOCK_EXPORT_H + +#include "qapi/qapi-types-block-export.h" + +typedef struct BlockExport BlockExport; + +typedef struct BlockExportDriver { + /* The export type that this driver services */ + BlockExportType type; + + /* Creates and starts a new block export */ + BlockExport *(*create)(BlockExportOptions *, Error **); +} BlockExportDriver; + +struct BlockExport { + const BlockExportDriver *drv; +}; + +#endif diff --git a/include/block/nbd.h b/include/block/nbd.h index 262f6da2ce..7698453fb2 100644 --- a/include/block/nbd.h +++ b/include/block/nbd.h @@ -20,11 +20,13 @@ #ifndef NBD_H #define NBD_H -#include "qapi/qapi-types-block-export.h" +#include "block/export.h" #include "io/channel-socket.h" #include "crypto/tlscreds.h" #include "qapi/error.h" +extern const BlockExportDriver blk_exp_nbd; + /* Handshake phase structs - this struct is passed on the wire */ struct NBDOption { @@ -328,6 +330,7 @@ int nbd_errno_to_system_errno(int err); 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, const char *bitmap, bool readonly, bool shared, |