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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 | #include <stdbool.h> |
24 | 7a5ca864 | bellard | |
25 | 7a5ca864 | bellard | #include <qemu-common.h> |
26 | 7a5ca864 | bellard | #include "block_int.h" |
27 | 7a5ca864 | bellard | |
28 | 75818250 | ths | struct nbd_request {
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29 | 75818250 | ths | uint32_t type; |
30 | 75818250 | ths | uint64_t handle; |
31 | 75818250 | ths | uint64_t from; |
32 | 75818250 | ths | uint32_t len; |
33 | 75818250 | ths | }; |
34 | 75818250 | ths | |
35 | 75818250 | ths | struct nbd_reply {
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36 | 75818250 | ths | uint32_t error; |
37 | 75818250 | ths | uint64_t handle; |
38 | 75818250 | ths | }; |
39 | 75818250 | ths | |
40 | 75818250 | ths | enum {
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41 | 75818250 | ths | NBD_CMD_READ = 0,
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42 | 75818250 | ths | NBD_CMD_WRITE = 1,
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43 | 75818250 | ths | NBD_CMD_DISC = 2
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44 | 75818250 | ths | }; |
45 | 75818250 | ths | |
46 | 75818250 | ths | size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read); |
47 | 75818250 | ths | int tcp_socket_outgoing(const char *address, uint16_t port); |
48 | 7a5ca864 | bellard | int tcp_socket_incoming(const char *address, uint16_t port); |
49 | cd831bd7 | ths | int unix_socket_outgoing(const char *path); |
50 | cd831bd7 | ths | int unix_socket_incoming(const char *path); |
51 | 7a5ca864 | bellard | |
52 | 27982661 | aliguori | int nbd_negotiate(int csock, off_t size); |
53 | cd831bd7 | ths | int nbd_receive_negotiate(int csock, off_t *size, size_t *blocksize); |
54 | cd831bd7 | ths | int nbd_init(int fd, int csock, off_t size, size_t blocksize); |
55 | 75818250 | ths | int nbd_send_request(int csock, struct nbd_request *request); |
56 | 75818250 | ths | int nbd_receive_reply(int csock, struct nbd_reply *reply); |
57 | 2f726488 | ths | int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset, |
58 | 2f726488 | ths | off_t *offset, bool readonly, uint8_t *data, int data_size); |
59 | 7a5ca864 | bellard | int nbd_client(int fd, int csock); |
60 | 7a5ca864 | bellard | int nbd_disconnect(int fd); |
61 | 7a5ca864 | bellard | |
62 | 7a5ca864 | bellard | #endif |