Annotation of qemu/nbd.h, revision 1.1

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
        !            16:  *  along with this program; if not, write to the Free Software
        !            17:  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
        !            18:  */
        !            19: 
        !            20: #ifndef NBD_H
        !            21: #define NBD_H
        !            22: 
        !            23: #include <sys/types.h>
        !            24: #include <stdbool.h>
        !            25: 
        !            26: #include <qemu-common.h>
        !            27: #include "block_int.h"
        !            28: 
        !            29: struct nbd_request {
        !            30:     uint32_t type;
        !            31:     uint64_t handle;
        !            32:     uint64_t from;
        !            33:     uint32_t len;
        !            34: };
        !            35: 
        !            36: struct nbd_reply {
        !            37:     uint32_t error;
        !            38:     uint64_t handle;
        !            39: };
        !            40: 
        !            41: enum {
        !            42:     NBD_CMD_READ = 0,
        !            43:     NBD_CMD_WRITE = 1,
        !            44:     NBD_CMD_DISC = 2
        !            45: };
        !            46: 
        !            47: size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read);
        !            48: int tcp_socket_outgoing(const char *address, uint16_t port);
        !            49: int tcp_socket_incoming(const char *address, uint16_t port);
        !            50: int unix_socket_outgoing(const char *path);
        !            51: int unix_socket_incoming(const char *path);
        !            52: 
        !            53: int nbd_negotiate(int csock, off_t size);
        !            54: int nbd_receive_negotiate(int csock, off_t *size, size_t *blocksize);
        !            55: int nbd_init(int fd, int csock, off_t size, size_t blocksize);
        !            56: int nbd_send_request(int csock, struct nbd_request *request);
        !            57: int nbd_receive_reply(int csock, struct nbd_reply *reply);
        !            58: int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset,
        !            59:              off_t *offset, bool readonly, uint8_t *data, int data_size);
        !            60: int nbd_client(int fd, int csock);
        !            61: int nbd_disconnect(int fd);
        !            62: 
        !            63: #endif

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