diff options
Diffstat (limited to 'nbd.h')
| -rw-r--r-- | nbd.h | 26 |
1 files changed, 24 insertions, 2 deletions
@@ -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); |