ths | 7581825 | 2008-07-03 13:41:03 +0000 | [diff] [blame] | 1 | /* |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 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 |
Blue Swirl | 8167ee8 | 2009-07-16 20:47:01 +0000 | [diff] [blame] | 16 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
ths | 7581825 | 2008-07-03 13:41:03 +0000 | [diff] [blame] | 17 | */ |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 18 | |
| 19 | #ifndef NBD_H |
| 20 | #define NBD_H |
| 21 | |
| 22 | #include <sys/types.h> |
| 23 | #include <stdbool.h> |
| 24 | |
| 25 | #include <qemu-common.h> |
| 26 | #include "block_int.h" |
| 27 | |
ths | 7581825 | 2008-07-03 13:41:03 +0000 | [diff] [blame] | 28 | struct nbd_request { |
| 29 | uint32_t type; |
| 30 | uint64_t handle; |
| 31 | uint64_t from; |
| 32 | uint32_t len; |
| 33 | }; |
| 34 | |
| 35 | struct nbd_reply { |
| 36 | uint32_t error; |
| 37 | uint64_t handle; |
| 38 | }; |
| 39 | |
| 40 | enum { |
| 41 | NBD_CMD_READ = 0, |
| 42 | NBD_CMD_WRITE = 1, |
| 43 | NBD_CMD_DISC = 2 |
| 44 | }; |
| 45 | |
| 46 | size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read); |
| 47 | int tcp_socket_outgoing(const char *address, uint16_t port); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 48 | int tcp_socket_incoming(const char *address, uint16_t port); |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 49 | int unix_socket_outgoing(const char *path); |
| 50 | int unix_socket_incoming(const char *path); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 51 | |
aliguori | 2798266 | 2008-09-10 15:23:19 +0000 | [diff] [blame] | 52 | int nbd_negotiate(int csock, off_t size); |
ths | cd831bd | 2008-07-03 10:23:51 +0000 | [diff] [blame] | 53 | int nbd_receive_negotiate(int csock, off_t *size, size_t *blocksize); |
| 54 | int nbd_init(int fd, int csock, off_t size, size_t blocksize); |
ths | 7581825 | 2008-07-03 13:41:03 +0000 | [diff] [blame] | 55 | int nbd_send_request(int csock, struct nbd_request *request); |
| 56 | int nbd_receive_reply(int csock, struct nbd_reply *reply); |
ths | 2f72648 | 2008-07-03 11:47:46 +0000 | [diff] [blame] | 57 | int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset, |
| 58 | off_t *offset, bool readonly, uint8_t *data, int data_size); |
bellard | 7a5ca86 | 2008-05-27 21:13:40 +0000 | [diff] [blame] | 59 | int nbd_client(int fd, int csock); |
| 60 | int nbd_disconnect(int fd); |
| 61 | |
| 62 | #endif |