4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2019 Kevin Wolf <kwolf@redhat.com>
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include "qemu/osdep.h"
30 #include "block/block.h"
31 #include "block/nbd.h"
32 #include "chardev/char.h"
33 #include "crypto/init.h"
34 #include "monitor/monitor.h"
35 #include "monitor/monitor-internal.h"
37 #include "qapi/error.h"
38 #include "qapi/qapi-visit-block-core.h"
39 #include "qapi/qapi-visit-block-export.h"
40 #include "qapi/qapi-visit-control.h"
41 #include "qapi/qmp/qdict.h"
42 #include "qapi/qmp/qstring.h"
43 #include "qapi/qobject-input-visitor.h"
45 #include "qemu-common.h"
46 #include "qemu-version.h"
47 #include "qemu/config-file.h"
48 #include "qemu/error-report.h"
49 #include "qemu/help_option.h"
51 #include "qemu/main-loop.h"
52 #include "qemu/module.h"
53 #include "qemu/option.h"
54 #include "qom/object_interfaces.h"
56 #include "storage-daemon/qapi/qapi-commands.h"
57 #include "storage-daemon/qapi/qapi-init-commands.h"
59 #include "sysemu/runstate.h"
60 #include "trace/control.h"
62 static volatile bool exit_requested
= false;
64 void qemu_system_killed(int signal
, pid_t pid
)
66 exit_requested
= true;
69 void qmp_quit(Error
**errp
)
71 exit_requested
= true;
74 static void help(void)
77 "Usage: %s [options]\n"
78 "QEMU storage daemon\n"
80 " -h, --help display this help and exit\n"
81 " -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
82 " specify tracing options\n"
83 " -V, --version output version information and exit\n"
85 " --blockdev [driver=]<driver>[,node-name=<N>][,discard=ignore|unmap]\n"
86 " [,cache.direct=on|off][,cache.no-flush=on|off]\n"
87 " [,read-only=on|off][,auto-read-only=on|off]\n"
88 " [,force-share=on|off][,detect-zeroes=on|off|unmap]\n"
89 " [,driver specific parameters...]\n"
90 " configure a block backend\n"
92 " --chardev <options> configure a character device backend\n"
93 " (see the qemu(1) man page for possible options)\n"
95 " --export [type=]nbd,id=<id>,node-name=<node-name>[,name=<export-name>]\n"
96 " [,writable=on|off][,bitmap=<name>]\n"
97 " export the specified block node over NBD\n"
98 " (requires --nbd-server)\n"
100 " --monitor [chardev=]name[,mode=control][,pretty[=on|off]]\n"
101 " configure a QMP monitor\n"
103 " --nbd-server addr.type=inet,addr.host=<host>,addr.port=<port>\n"
104 " [,tls-creds=<id>][,tls-authz=<id>][,max-connections=<n>]\n"
105 " --nbd-server addr.type=unix,addr.path=<path>\n"
106 " [,tls-creds=<id>][,tls-authz=<id>][,max-connections=<n>]\n"
107 " start an NBD server for exporting block nodes\n"
109 " --object help list object types that can be added\n"
110 " --object <type>,help list properties for the given object type\n"
111 " --object <type>[,<property>=<value>...]\n"
112 " create a new object of type <type>, setting\n"
113 " properties in the order they are specified. Note\n"
114 " that the 'id' property must be set.\n"
115 " See the qemu(1) man page for documentation of the\n"
116 " objects that can be added.\n"
118 QEMU_HELP_BOTTOM
"\n",
119 error_get_progname());
123 OPTION_BLOCKDEV
= 256,
131 extern QemuOptsList qemu_chardev_opts
;
133 static QemuOptsList qemu_object_opts
= {
135 .implied_opt_name
= "qom-type",
136 .head
= QTAILQ_HEAD_INITIALIZER(qemu_object_opts
.head
),
142 static void init_qmp_commands(void)
144 qmp_init_marshal(&qmp_commands
);
145 qmp_register_command(&qmp_commands
, "query-qmp-schema",
146 qmp_query_qmp_schema
, QCO_ALLOW_PRECONFIG
);
147 qmp_register_command(&qmp_commands
, "object-add", qmp_object_add
,
150 QTAILQ_INIT(&qmp_cap_negotiation_commands
);
151 qmp_register_command(&qmp_cap_negotiation_commands
, "qmp_capabilities",
152 qmp_marshal_qmp_capabilities
, QCO_ALLOW_PRECONFIG
);
155 static int getopt_set_loc(int argc
, char **argv
, const char *optstring
,
156 const struct option
*longopts
)
162 c
= getopt_long(argc
, argv
, optstring
, longopts
, NULL
);
164 loc_set_cmdline(argv
, save_index
, MAX(1, optind
- save_index
));
169 static void process_options(int argc
, char *argv
[])
173 static const struct option long_options
[] = {
174 {"blockdev", required_argument
, NULL
, OPTION_BLOCKDEV
},
175 {"chardev", required_argument
, NULL
, OPTION_CHARDEV
},
176 {"export", required_argument
, NULL
, OPTION_EXPORT
},
177 {"help", no_argument
, NULL
, 'h'},
178 {"monitor", required_argument
, NULL
, OPTION_MONITOR
},
179 {"nbd-server", required_argument
, NULL
, OPTION_NBD_SERVER
},
180 {"object", required_argument
, NULL
, OPTION_OBJECT
},
181 {"trace", required_argument
, NULL
, 'T'},
182 {"version", no_argument
, NULL
, 'V'},
187 * In contrast to the system emulator, options are processed in the order
188 * they are given on the command lines. This means that things must be
189 * defined first before they can be referenced in another option.
191 while ((c
= getopt_set_loc(argc
, argv
, "-hT:V", long_options
)) != -1) {
199 trace_opt_parse(optarg
);
203 printf("qemu-storage-daemon version "
204 QEMU_FULL_VERSION
"\n" QEMU_COPYRIGHT
"\n");
206 case OPTION_BLOCKDEV
:
209 BlockdevOptions
*options
;
211 v
= qobject_input_visitor_new_str(optarg
, "driver",
214 visit_type_BlockdevOptions(v
, NULL
, &options
, &error_fatal
);
217 qmp_blockdev_add(options
, &error_fatal
);
218 qapi_free_BlockdevOptions(options
);
223 /* TODO This interface is not stable until we QAPIfy it */
224 QemuOpts
*opts
= qemu_opts_parse_noisily(&qemu_chardev_opts
,
230 if (!qemu_chr_new_from_opts(opts
, NULL
, &error_fatal
)) {
231 /* No error, but NULL returned means help was printed */
240 BlockExportOptions
*export
;
242 v
= qobject_input_visitor_new_str(optarg
, "type", &error_fatal
);
243 visit_type_BlockExportOptions(v
, NULL
, &export
, &error_fatal
);
246 qmp_block_export_add(export
, &error_fatal
);
247 qapi_free_BlockExportOptions(export
);
253 MonitorOptions
*monitor
;
255 v
= qobject_input_visitor_new_str(optarg
, "chardev",
257 visit_type_MonitorOptions(v
, NULL
, &monitor
, &error_fatal
);
260 /* TODO Catch duplicate monitor IDs */
261 monitor_init(monitor
, false, &error_fatal
);
262 qapi_free_MonitorOptions(monitor
);
265 case OPTION_NBD_SERVER
:
268 NbdServerOptions
*options
;
270 v
= qobject_input_visitor_new_str(optarg
, NULL
, &error_fatal
);
271 visit_type_NbdServerOptions(v
, NULL
, &options
, &error_fatal
);
274 nbd_server_start_options(options
, &error_fatal
);
275 qapi_free_NbdServerOptions(options
);
283 args
= keyval_parse(optarg
, "qom-type", &help
, &error_fatal
);
285 user_creatable_print_help_from_qdict(args
);
288 user_creatable_add_dict(args
, true, &error_fatal
);
293 error_report("Unexpected argument");
296 g_assert_not_reached();
302 int main(int argc
, char *argv
[])
305 signal(SIGPIPE
, SIG_IGN
);
309 qemu_init_exec_dir(argv
[0]);
310 os_setup_signal_handling();
312 module_call_init(MODULE_INIT_QOM
);
313 module_call_init(MODULE_INIT_TRACE
);
314 qemu_add_opts(&qemu_object_opts
);
315 qemu_add_opts(&qemu_trace_opts
);
316 qcrypto_init(&error_fatal
);
318 monitor_init_globals_core();
321 if (!trace_init_backends()) {
324 qemu_set_log(LOG_TRACE
);
326 qemu_init_main_loop(&error_fatal
);
327 process_options(argc
, argv
);
329 while (!exit_requested
) {
330 main_loop_wait(false);
334 bdrv_drain_all_begin();
339 user_creatable_cleanup();