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1 | 75818250 | ths | /*
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2 | 7a5ca864 | bellard | * Copyright (C) 2005 Anthony Liguori <anthony@codemonkey.ws>
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3 | 7a5ca864 | bellard | *
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4 | 7a5ca864 | bellard | * Network Block Device
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5 | 7a5ca864 | bellard | *
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6 | 7a5ca864 | bellard | * This program is free software; you can redistribute it and/or modify
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7 | 7a5ca864 | bellard | * it under the terms of the GNU General Public License as published by
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8 | 7a5ca864 | bellard | * the Free Software Foundation; under version 2 of the License.
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9 | 7a5ca864 | bellard | *
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10 | 7a5ca864 | bellard | * This program is distributed in the hope that it will be useful,
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11 | 7a5ca864 | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | 7a5ca864 | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | 7a5ca864 | bellard | * GNU General Public License for more details.
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14 | 7a5ca864 | bellard | *
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15 | 7a5ca864 | bellard | * You should have received a copy of the GNU General Public License
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16 | 8167ee88 | Blue Swirl | * along with this program; if not, see <http://www.gnu.org/licenses/>.
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17 | 75818250 | ths | */
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18 | 7a5ca864 | bellard | |
19 | 7a5ca864 | bellard | #ifndef NBD_H
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20 | 7a5ca864 | bellard | #define NBD_H
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21 | 7a5ca864 | bellard | |
22 | 7a5ca864 | bellard | #include <sys/types.h> |
23 | 7a5ca864 | bellard | |
24 | 7a5ca864 | bellard | #include <qemu-common.h> |
25 | c12504ce | Nick Thomas | |
26 | 7a5ca864 | bellard | #include "block_int.h" |
27 | 7a5ca864 | bellard | |
28 | 75818250 | ths | struct nbd_request {
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29 | c12504ce | Nick Thomas | uint32_t magic; |
30 | 75818250 | ths | uint32_t type; |
31 | 75818250 | ths | uint64_t handle; |
32 | 75818250 | ths | uint64_t from; |
33 | 75818250 | ths | uint32_t len; |
34 | c12504ce | Nick Thomas | } __attribute__ ((__packed__)); |
35 | 75818250 | ths | |
36 | 75818250 | ths | struct nbd_reply {
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37 | c12504ce | Nick Thomas | uint32_t magic; |
38 | 75818250 | ths | uint32_t error; |
39 | 75818250 | ths | uint64_t handle; |
40 | c12504ce | Nick Thomas | } __attribute__ ((__packed__)); |
41 | 75818250 | ths | |
42 | 75818250 | ths | enum {
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43 | 75818250 | ths | NBD_CMD_READ = 0,
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44 | 75818250 | ths | NBD_CMD_WRITE = 1,
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45 | 75818250 | ths | NBD_CMD_DISC = 2
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46 | 75818250 | ths | }; |
47 | 75818250 | ths | |
48 | 1d45f8b5 | Laurent Vivier | #define NBD_DEFAULT_PORT 10809 |
49 | 1d45f8b5 | Laurent Vivier | |
50 | 75818250 | ths | size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read); |
51 | 75818250 | ths | int tcp_socket_outgoing(const char *address, uint16_t port); |
52 | 7a5ca864 | bellard | int tcp_socket_incoming(const char *address, uint16_t port); |
53 | c12504ce | Nick Thomas | int tcp_socket_outgoing_spec(const char *address_and_port); |
54 | c12504ce | Nick Thomas | int tcp_socket_incoming_spec(const char *address_and_port); |
55 | cd831bd7 | ths | int unix_socket_outgoing(const char *path); |
56 | cd831bd7 | ths | int unix_socket_incoming(const char *path); |
57 | 7a5ca864 | bellard | |
58 | 27982661 | aliguori | int nbd_negotiate(int csock, off_t size); |
59 | 1d45f8b5 | Laurent Vivier | int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags, |
60 | 1d45f8b5 | Laurent Vivier | off_t *size, size_t *blocksize); |
61 | cd831bd7 | ths | int nbd_init(int fd, int csock, off_t size, size_t blocksize); |
62 | 75818250 | ths | int nbd_send_request(int csock, struct nbd_request *request); |
63 | 75818250 | ths | int nbd_receive_reply(int csock, struct nbd_reply *reply); |
64 | 2f726488 | ths | int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset, |
65 | 2f726488 | ths | off_t *offset, bool readonly, uint8_t *data, int data_size); |
66 | 0a4eb864 | Jes Sorensen | int nbd_client(int fd); |
67 | 7a5ca864 | bellard | int nbd_disconnect(int fd); |
68 | 7a5ca864 | bellard | |
69 | 7a5ca864 | bellard | #endif |