1
2
3
4
5
6
7
8
9
10#ifndef NBD_INTERNAL_H
11#define NBD_INTERNAL_H
12#include "block/nbd.h"
13#include "sysemu/block-backend.h"
14#include "io/channel-tls.h"
15
16#include "qemu/coroutine.h"
17#include "qemu/iov.h"
18
19#ifndef _WIN32
20#include <sys/ioctl.h>
21#endif
22#if defined(__sun__) || defined(__HAIKU__)
23#include <sys/ioccom.h>
24#endif
25
26#ifdef __linux__
27#include <linux/fs.h>
28#endif
29
30#include "qemu/queue.h"
31#include "qemu/main-loop.h"
32
33
34
35#ifdef DEBUG_NBD
36#define DEBUG_NBD_PRINT 1
37#else
38#define DEBUG_NBD_PRINT 0
39#endif
40
41#define TRACE(msg, ...) do { \
42 if (DEBUG_NBD_PRINT) { \
43 LOG(msg, ## __VA_ARGS__); \
44 } \
45} while (0)
46
47#define LOG(msg, ...) do { \
48 fprintf(stderr, "%s:%s():L%d: " msg "\n", \
49 __FILE__, __FUNCTION__, __LINE__, ## __VA_ARGS__); \
50} while (0)
51
52
53
54
55
56
57
58#define NBD_REQUEST_SIZE (4 + 4 + 8 + 8 + 4)
59#define NBD_REPLY_SIZE (4 + 4 + 8)
60#define NBD_REQUEST_MAGIC 0x25609513
61#define NBD_REPLY_MAGIC 0x67446698
62#define NBD_OPTS_MAGIC 0x49484156454F5054LL
63#define NBD_CLIENT_MAGIC 0x0000420281861253LL
64#define NBD_REP_MAGIC 0x3e889045565a9LL
65
66#define NBD_SET_SOCK _IO(0xab, 0)
67#define NBD_SET_BLKSIZE _IO(0xab, 1)
68#define NBD_SET_SIZE _IO(0xab, 2)
69#define NBD_DO_IT _IO(0xab, 3)
70#define NBD_CLEAR_SOCK _IO(0xab, 4)
71#define NBD_CLEAR_QUE _IO(0xab, 5)
72#define NBD_PRINT_DEBUG _IO(0xab, 6)
73#define NBD_SET_SIZE_BLOCKS _IO(0xab, 7)
74#define NBD_DISCONNECT _IO(0xab, 8)
75#define NBD_SET_TIMEOUT _IO(0xab, 9)
76#define NBD_SET_FLAGS _IO(0xab, 10)
77
78#define NBD_OPT_EXPORT_NAME (1)
79#define NBD_OPT_ABORT (2)
80#define NBD_OPT_LIST (3)
81#define NBD_OPT_PEEK_EXPORT (4)
82#define NBD_OPT_STARTTLS (5)
83
84
85
86
87
88#define NBD_SUCCESS 0
89#define NBD_EPERM 1
90#define NBD_EIO 5
91#define NBD_ENOMEM 12
92#define NBD_EINVAL 22
93#define NBD_ENOSPC 28
94
95static inline ssize_t read_sync(QIOChannel *ioc, void *buffer, size_t size)
96{
97 struct iovec iov = { .iov_base = buffer, .iov_len = size };
98
99
100
101
102
103 return nbd_wr_syncv(ioc, &iov, 1, 0, size, true);
104}
105
106static inline ssize_t write_sync(QIOChannel *ioc, void *buffer, size_t size)
107{
108 struct iovec iov = { .iov_base = buffer, .iov_len = size };
109
110 return nbd_wr_syncv(ioc, &iov, 1, 0, size, false);
111}
112
113struct NBDTLSHandshakeData {
114 GMainLoop *loop;
115 bool complete;
116 Error *error;
117};
118
119
120void nbd_tls_handshake(Object *src,
121 Error *err,
122 void *opaque);
123
124#endif
125