Revision 75818250 nbd.h

b/nbd.h
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/*\
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/*
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 *  Copyright (C) 2005  Anthony Liguori <anthony@codemonkey.ws>
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 *
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 *  Network Block Device
......
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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\*/
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 */
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#ifndef NBD_H


  		





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#define NBD_H


  		





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#include <qemu-common.h>


  		





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#include "block_int.h"


  		





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struct nbd_request {


  		





  
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    uint32_t type;


  		





  
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    uint64_t handle;


  		





  
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    uint64_t from;


  		





  
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    uint32_t len;


  		





  
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};


  		





  
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struct nbd_reply {


  		





  
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    uint32_t error;


  		





  
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    uint64_t handle;


  		





  
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};


  		





  
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enum {


  		





  
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    NBD_CMD_READ = 0,


  		





  
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    NBD_CMD_WRITE = 1,


  		





  
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    NBD_CMD_DISC = 2


  		





  
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};


  		





  
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size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read);


  		





  
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int tcp_socket_outgoing(const char *address, uint16_t port);


  		





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int tcp_socket_incoming(const char *address, uint16_t port);


  		





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int unix_socket_outgoing(const char *path);


  		





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int unix_socket_incoming(const char *path);


  		





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int nbd_negotiate(BlockDriverState *bs, int csock, off_t size);


  		





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int nbd_receive_negotiate(int csock, off_t *size, size_t *blocksize);


  		





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int nbd_init(int fd, int csock, off_t size, size_t blocksize);


  		





  
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int nbd_send_request(int csock, struct nbd_request *request);


  		





  
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int nbd_receive_reply(int csock, struct nbd_reply *reply);


  		





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int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset,


  		





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             off_t *offset, bool readonly, uint8_t *data, int data_size);


  		





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int nbd_client(int fd, int csock);


  		












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