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Commit | Line | Data |
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798bfe00 FZ |
1 | /* |
2 | * NBD Internal Declarations | |
3 | * | |
4 | * Copyright (C) 2016 Red Hat, Inc. | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
7 | * See the COPYING file in the top-level directory. | |
8 | */ | |
9 | ||
10 | #ifndef NBD_INTERNAL_H | |
11 | #define NBD_INTERNAL_H | |
12 | #include "block/nbd.h" | |
13 | #include "sysemu/block-backend.h" | |
f95910fe | 14 | #include "io/channel-tls.h" |
798bfe00 FZ |
15 | |
16 | #include "qemu/coroutine.h" | |
1c778ef7 | 17 | #include "qemu/iov.h" |
798bfe00 | 18 | |
798bfe00 FZ |
19 | #ifndef _WIN32 |
20 | #include <sys/ioctl.h> | |
21 | #endif | |
22 | #if defined(__sun__) || defined(__HAIKU__) | |
23 | #include <sys/ioccom.h> | |
24 | #endif | |
798bfe00 FZ |
25 | |
26 | #ifdef __linux__ | |
27 | #include <linux/fs.h> | |
28 | #endif | |
29 | ||
58369e22 | 30 | #include "qemu/bswap.h" |
798bfe00 FZ |
31 | #include "qemu/queue.h" |
32 | #include "qemu/main-loop.h" | |
33 | ||
798bfe00 FZ |
34 | /* This is all part of the "official" NBD API. |
35 | * | |
36 | * The most up-to-date documentation is available at: | |
b626b51a | 37 | * https://github.com/yoe/nbd/blob/master/doc/proto.md |
798bfe00 FZ |
38 | */ |
39 | ||
8ecaeae8 | 40 | /* Size of all NBD_OPT_*, without payload */ |
5f66d060 | 41 | #define NBD_REQUEST_SIZE (4 + 2 + 2 + 8 + 8 + 4) |
8ecaeae8 | 42 | /* Size of all NBD_REP_* sent in answer to most NBD_OPT_*, without payload */ |
5f66d060 EB |
43 | #define NBD_REPLY_SIZE (4 + 4 + 8) |
44 | /* Size of reply to NBD_OPT_EXPORT_NAME */ | |
45 | #define NBD_REPLY_EXPORT_NAME_SIZE (8 + 2 + 124) | |
46 | /* Size of oldstyle negotiation */ | |
47 | #define NBD_OLDSTYLE_NEGOTIATE_SIZE (8 + 8 + 8 + 4 + 124) | |
8ecaeae8 | 48 | |
ef2e35fc | 49 | #define NBD_INIT_MAGIC 0x4e42444d41474943LL /* ASCII "NBDMAGIC" */ |
92652b12 | 50 | #define NBD_REQUEST_MAGIC 0x25609513 |
ef2e35fc | 51 | #define NBD_OPTS_MAGIC 0x49484156454F5054LL /* ASCII "IHAVEOPT" */ |
92652b12 VSO |
52 | #define NBD_CLIENT_MAGIC 0x0000420281861253LL |
53 | #define NBD_REP_MAGIC 0x0003e889045565a9LL | |
798bfe00 | 54 | |
92652b12 VSO |
55 | #define NBD_SET_SOCK _IO(0xab, 0) |
56 | #define NBD_SET_BLKSIZE _IO(0xab, 1) | |
57 | #define NBD_SET_SIZE _IO(0xab, 2) | |
58 | #define NBD_DO_IT _IO(0xab, 3) | |
59 | #define NBD_CLEAR_SOCK _IO(0xab, 4) | |
60 | #define NBD_CLEAR_QUE _IO(0xab, 5) | |
61 | #define NBD_PRINT_DEBUG _IO(0xab, 6) | |
62 | #define NBD_SET_SIZE_BLOCKS _IO(0xab, 7) | |
63 | #define NBD_DISCONNECT _IO(0xab, 8) | |
64 | #define NBD_SET_TIMEOUT _IO(0xab, 9) | |
65 | #define NBD_SET_FLAGS _IO(0xab, 10) | |
798bfe00 | 66 | |
d1fdf257 | 67 | /* nbd_write |
f5d406fe VSO |
68 | * Writes @size bytes to @ioc. Returns 0 on success. |
69 | */ | |
d1fdf257 VSO |
70 | static inline int nbd_write(QIOChannel *ioc, const void *buffer, size_t size, |
71 | Error **errp) | |
798bfe00 | 72 | { |
030fa7f6 | 73 | return qio_channel_write_all(ioc, buffer, size, errp) < 0 ? -EIO : 0; |
798bfe00 FZ |
74 | } |
75 | ||
f95910fe DB |
76 | struct NBDTLSHandshakeData { |
77 | GMainLoop *loop; | |
78 | bool complete; | |
79 | Error *error; | |
80 | }; | |
81 | ||
82 | ||
60e705c5 | 83 | void nbd_tls_handshake(QIOTask *task, |
f95910fe DB |
84 | void *opaque); |
85 | ||
44298024 VSO |
86 | int nbd_drop(QIOChannel *ioc, size_t size, Error **errp); |
87 | ||
798bfe00 | 88 | #endif |