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authorths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>2008-07-03 13:41:03 +0000
committerths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>2008-07-03 13:41:03 +0000
commit75818250ba0f61d9e3008b11d8c63b7b46d80ba2 (patch)
tree10fdb06f655d82a6372bf918338f3de086895452 /nbd.h
parentAllow to share a disk image via nbd, by Laurent Vivier. (diff)
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Allow QEMU to connect directly to an NBD server, by Laurent Vivier.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4838 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'nbd.h')
-rw-r--r--nbd.h26
1 files changed, 24 insertions, 2 deletions
diff --git a/nbd.h b/nbd.h
index 01e4a6af1..55ba1ba01 100644
--- a/nbd.h
+++ b/nbd.h
@@ -1,4 +1,4 @@
-/*\
+/*
* Copyright (C) 2005 Anthony Liguori <anthony@codemonkey.ws>
*
* Network Block Device
@@ -15,7 +15,7 @@
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-\*/
+ */
#ifndef NBD_H
#define NBD_H
@@ -26,6 +26,26 @@
#include <qemu-common.h>
#include "block_int.h"
+struct nbd_request {
+ uint32_t type;
+ uint64_t handle;
+ uint64_t from;
+ uint32_t len;
+};
+
+struct nbd_reply {
+ uint32_t error;
+ uint64_t handle;
+};
+
+enum {
+ NBD_CMD_READ = 0,
+ NBD_CMD_WRITE = 1,
+ NBD_CMD_DISC = 2
+};
+
+size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read);
+int tcp_socket_outgoing(const char *address, uint16_t port);
int tcp_socket_incoming(const char *address, uint16_t port);
int unix_socket_outgoing(const char *path);
int unix_socket_incoming(const char *path);
@@ -33,6 +53,8 @@ int unix_socket_incoming(const char *path);
int nbd_negotiate(BlockDriverState *bs, int csock, off_t size);
int nbd_receive_negotiate(int csock, off_t *size, size_t *blocksize);
int nbd_init(int fd, int csock, off_t size, size_t blocksize);
+int nbd_send_request(int csock, struct nbd_request *request);
+int nbd_receive_reply(int csock, struct nbd_reply *reply);
int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset,
off_t *offset, bool readonly, uint8_t *data, int data_size);
int nbd_client(int fd, int csock);