1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
* QEMU monitor
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MONITOR_INTERNAL_H
#define MONITOR_INTERNAL_H
#include "chardev/char-fe.h"
#include "monitor/monitor.h"
#include "qapi/qapi-types-control.h"
#include "qapi/qmp/dispatch.h"
#include "qapi/qmp/json-parser.h"
#include "qemu/readline.h"
#include "sysemu/iothread.h"
/*
* Supported types:
*
* 'F' filename
* 'B' block device name
* 's' string (accept optional quote)
* 'S' it just appends the rest of the string (accept optional quote)
* 'O' option string of the form NAME=VALUE,...
* parsed according to QemuOptsList given by its name
* Example: 'device:O' uses qemu_device_opts.
* Restriction: only lists with empty desc are supported
* TODO lift the restriction
* 'i' 32 bit integer
* 'l' target long (32 or 64 bit)
* 'M' Non-negative target long (32 or 64 bit), in user mode the
* value is multiplied by 2^20 (think Mebibyte)
* 'o' octets (aka bytes)
* user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
* K, k suffix, which multiplies the value by 2^60 for suffixes E
* and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
* 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
* 'T' double
* user mode accepts an optional ms, us, ns suffix,
* which divides the value by 1e3, 1e6, 1e9, respectively
* '/' optional gdb-like print format (like "/10x")
*
* '?' optional type (for all types, except '/')
* '.' other form of optional type (for 'i' and 'l')
* 'b' boolean
* user mode accepts "on" or "off"
* '-' optional parameter (eg. '-f'); if followed by a 's', it
* specifies an optional string param (e.g. '-fs' allows '-f foo')
*
*/
typedef struct HMPCommand {
const char *name;
const char *args_type;
const char *params;
const char *help;
const char *flags; /* p=preconfig */
void (*cmd)(Monitor *mon, const QDict *qdict);
/*
* If implementing a command that takes no arguments and simply
* prints formatted data, then leave @cmd NULL, and then set
* @cmd_info_hrt to the corresponding QMP handler that returns
* the formatted text.
*/
HumanReadableText *(*cmd_info_hrt)(Error **errp);
bool coroutine;
/*
* @sub_table is a list of 2nd level of commands. If it does not exist,
* cmd should be used. If it exists, sub_table[?].cmd should be
* used, and cmd of 1st level plays the role of help function.
*/
struct HMPCommand *sub_table;
void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
} HMPCommand;
struct Monitor {
CharBackend chr;
int suspend_cnt; /* Needs to be accessed atomically */
bool is_qmp;
bool skip_flush;
bool use_io_thread;
char *mon_cpu_path;
QTAILQ_ENTRY(Monitor) entry;
/*
* The per-monitor lock. We can't access guest memory when holding
* the lock.
*/
QemuMutex mon_lock;
/*
* Members that are protected by the per-monitor lock
*/
QLIST_HEAD(, mon_fd_t) fds;
GString *outbuf;
guint out_watch;
int mux_out;
int reset_seen;
};
struct MonitorHMP {
Monitor common;
bool use_readline;
/*
* State used only in the thread "owning" the monitor.
* If @use_io_thread, this is @mon_iothread. (This does not actually happen
* in the current state of the code.)
* Else, it's the main thread.
* These members can be safely accessed without locks.
*/
ReadLineState *rs;
};
typedef struct {
Monitor common;
JSONMessageParser parser;
bool pretty;
/*
* When a client connects, we're in capabilities negotiation mode.
* @commands is &qmp_cap_negotiation_commands then. When command
* qmp_capabilities succeeds, we go into command mode, and
* @command becomes &qmp_commands.
*/
const QmpCommandList *commands;
bool capab_offered[QMP_CAPABILITY__MAX]; /* capabilities offered */
bool capab[QMP_CAPABILITY__MAX]; /* offered and accepted */
/*
* Protects qmp request/response queue.
* Take monitor_lock first when you need both.
*/
QemuMutex qmp_queue_lock;
/* Input queue that holds all the parsed QMP requests */
GQueue *qmp_requests;
} MonitorQMP;
/**
* Is @mon a QMP monitor?
*/
static inline bool monitor_is_qmp(const Monitor *mon)
{
return mon->is_qmp;
}
typedef QTAILQ_HEAD(MonitorList, Monitor) MonitorList;
extern IOThread *mon_iothread;
extern Coroutine *qmp_dispatcher_co;
extern bool qmp_dispatcher_co_shutdown;
extern QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
extern QemuMutex monitor_lock;
extern MonitorList mon_list;
extern HMPCommand hmp_cmds[];
void monitor_data_init(Monitor *mon, bool is_qmp, bool skip_flush,
bool use_io_thread);
void monitor_data_destroy(Monitor *mon);
int monitor_can_read(void *opaque);
void monitor_list_append(Monitor *mon);
void monitor_fdsets_cleanup(void);
void qmp_send_response(MonitorQMP *mon, const QDict *rsp);
void monitor_data_destroy_qmp(MonitorQMP *mon);
void coroutine_fn monitor_qmp_dispatcher_co(void *data);
void qmp_dispatcher_co_wake(void);
int get_monitor_def(Monitor *mon, int64_t *pval, const char *name);
void handle_hmp_command(MonitorHMP *mon, const char *cmdline);
int hmp_compare_cmd(const char *name, const char *list);
#endif
|
