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Commit | Line | Data |
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75818250 | 1 | /* |
7a5ca864 FB |
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 | |
8167ee88 | 16 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
75818250 | 17 | */ |
7a5ca864 FB |
18 | |
19 | #ifndef NBD_H | |
20 | #define NBD_H | |
21 | ||
22 | #include <sys/types.h> | |
7a5ca864 | 23 | |
5a61cb60 | 24 | #include "qemu-common.h" |
c12504ce | 25 | |
75818250 | 26 | struct nbd_request { |
c12504ce | 27 | uint32_t magic; |
75818250 TS |
28 | uint32_t type; |
29 | uint64_t handle; | |
30 | uint64_t from; | |
31 | uint32_t len; | |
541dc0d4 | 32 | } QEMU_PACKED; |
75818250 TS |
33 | |
34 | struct nbd_reply { | |
c12504ce | 35 | uint32_t magic; |
75818250 TS |
36 | uint32_t error; |
37 | uint64_t handle; | |
541dc0d4 | 38 | } QEMU_PACKED; |
75818250 TS |
39 | |
40 | enum { | |
41 | NBD_CMD_READ = 0, | |
42 | NBD_CMD_WRITE = 1, | |
43 | NBD_CMD_DISC = 2 | |
44 | }; | |
45 | ||
1d45f8b5 LV |
46 | #define NBD_DEFAULT_PORT 10809 |
47 | ||
75818250 TS |
48 | size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read); |
49 | int tcp_socket_outgoing(const char *address, uint16_t port); | |
7a5ca864 | 50 | int tcp_socket_incoming(const char *address, uint16_t port); |
c12504ce NT |
51 | int tcp_socket_outgoing_spec(const char *address_and_port); |
52 | int tcp_socket_incoming_spec(const char *address_and_port); | |
cd831bd7 TS |
53 | int unix_socket_outgoing(const char *path); |
54 | int unix_socket_incoming(const char *path); | |
7a5ca864 | 55 | |
27982661 | 56 | int nbd_negotiate(int csock, off_t size); |
1d45f8b5 LV |
57 | int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags, |
58 | off_t *size, size_t *blocksize); | |
cd831bd7 | 59 | int nbd_init(int fd, int csock, off_t size, size_t blocksize); |
75818250 TS |
60 | int nbd_send_request(int csock, struct nbd_request *request); |
61 | int nbd_receive_reply(int csock, struct nbd_reply *reply); | |
2f726488 TS |
62 | int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset, |
63 | off_t *offset, bool readonly, uint8_t *data, int data_size); | |
0a4eb864 | 64 | int nbd_client(int fd); |
7a5ca864 FB |
65 | int nbd_disconnect(int fd); |
66 | ||
67 | #endif |