Annotation of qemu/nbd.h, revision 1.1.1.5

1.1       root        1: /*
                      2:  *  Copyright (C) 2005  Anthony Liguori <anthony@codemonkey.ws>
                      3:  *
                      4:  *  Network Block Device
                      5:  *
                      6:  *  This program is free software; you can redistribute it and/or modify
                      7:  *  it under the terms of the GNU General Public License as published by
                      8:  *  the Free Software Foundation; under version 2 of the License.
                      9:  *
                     10:  *  This program is distributed in the hope that it will be useful,
                     11:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
                     12:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     13:  *  GNU General Public License for more details.
                     14:  *
                     15:  *  You should have received a copy of the GNU General Public License
1.1.1.2   root       16:  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
1.1       root       17:  */
                     18: 
                     19: #ifndef NBD_H
                     20: #define NBD_H
                     21: 
                     22: #include <sys/types.h>
                     23: 
                     24: #include <qemu-common.h>
1.1.1.5 ! root       25: 
1.1       root       26: #include "block_int.h"
                     27: 
                     28: struct nbd_request {
1.1.1.5 ! root       29:     uint32_t magic;
1.1       root       30:     uint32_t type;
                     31:     uint64_t handle;
                     32:     uint64_t from;
                     33:     uint32_t len;
1.1.1.5 ! root       34: } __attribute__ ((__packed__));
1.1       root       35: 
                     36: struct nbd_reply {
1.1.1.5 ! root       37:     uint32_t magic;
1.1       root       38:     uint32_t error;
                     39:     uint64_t handle;
1.1.1.5 ! root       40: } __attribute__ ((__packed__));
1.1       root       41: 
                     42: enum {
                     43:     NBD_CMD_READ = 0,
                     44:     NBD_CMD_WRITE = 1,
                     45:     NBD_CMD_DISC = 2
                     46: };
                     47: 
1.1.1.4   root       48: #define NBD_DEFAULT_PORT       10809
                     49: 
1.1       root       50: size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read);
                     51: int tcp_socket_outgoing(const char *address, uint16_t port);
                     52: int tcp_socket_incoming(const char *address, uint16_t port);
1.1.1.5 ! root       53: int tcp_socket_outgoing_spec(const char *address_and_port);
        !            54: int tcp_socket_incoming_spec(const char *address_and_port);
1.1       root       55: int unix_socket_outgoing(const char *path);
                     56: int unix_socket_incoming(const char *path);
                     57: 
                     58: int nbd_negotiate(int csock, off_t size);
1.1.1.4   root       59: int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags,
                     60:                           off_t *size, size_t *blocksize);
1.1       root       61: int nbd_init(int fd, int csock, off_t size, size_t blocksize);
                     62: int nbd_send_request(int csock, struct nbd_request *request);
                     63: int nbd_receive_reply(int csock, struct nbd_reply *reply);
                     64: int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset,
                     65:              off_t *offset, bool readonly, uint8_t *data, int data_size);
1.1.1.4   root       66: int nbd_client(int fd);
1.1       root       67: int nbd_disconnect(int fd);
                     68: 
                     69: #endif

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