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f353415f KW |
1 | /* |
2 | * QEMU storage daemon | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * Copyright (c) 2019 Kevin Wolf <kwolf@redhat.com> | |
6 | * | |
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: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
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 | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include "qemu/osdep.h" | |
27 | ||
28 | #include <getopt.h> | |
29 | ||
30 | #include "block/block.h" | |
eed8b691 | 31 | #include "block/nbd.h" |
5e6911cf | 32 | #include "chardev/char.h" |
f353415f | 33 | #include "crypto/init.h" |
2af282ec KW |
34 | #include "monitor/monitor.h" |
35 | #include "monitor/monitor-internal.h" | |
f353415f KW |
36 | |
37 | #include "qapi/error.h" | |
eed8b691 | 38 | #include "qapi/qapi-visit-block-core.h" |
5daa6bfd | 39 | #include "qapi/qapi-visit-block-export.h" |
2af282ec | 40 | #include "qapi/qapi-visit-control.h" |
d6da78b5 | 41 | #include "qapi/qmp/qdict.h" |
2af282ec | 42 | #include "qapi/qmp/qstring.h" |
14837c64 KW |
43 | #include "qapi/qobject-input-visitor.h" |
44 | ||
f353415f KW |
45 | #include "qemu-common.h" |
46 | #include "qemu-version.h" | |
47 | #include "qemu/config-file.h" | |
48 | #include "qemu/error-report.h" | |
d6da78b5 | 49 | #include "qemu/help_option.h" |
f353415f KW |
50 | #include "qemu/log.h" |
51 | #include "qemu/main-loop.h" | |
52 | #include "qemu/module.h" | |
d6da78b5 KW |
53 | #include "qemu/option.h" |
54 | #include "qom/object_interfaces.h" | |
f353415f | 55 | |
2af282ec KW |
56 | #include "storage-daemon/qapi/qapi-commands.h" |
57 | #include "storage-daemon/qapi/qapi-init-commands.h" | |
58 | ||
aa70683d | 59 | #include "sysemu/runstate.h" |
f353415f KW |
60 | #include "trace/control.h" |
61 | ||
aa70683d KW |
62 | static volatile bool exit_requested = false; |
63 | ||
64 | void qemu_system_killed(int signal, pid_t pid) | |
65 | { | |
66 | exit_requested = true; | |
67 | } | |
68 | ||
2af282ec KW |
69 | void qmp_quit(Error **errp) |
70 | { | |
71 | exit_requested = true; | |
72 | } | |
73 | ||
f353415f KW |
74 | static void help(void) |
75 | { | |
76 | printf( | |
77 | "Usage: %s [options]\n" | |
78 | "QEMU storage daemon\n" | |
79 | "\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" | |
84 | "\n" | |
14837c64 KW |
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" | |
91 | "\n" | |
5e6911cf KW |
92 | " --chardev <options> configure a character device backend\n" |
93 | " (see the qemu(1) man page for possible options)\n" | |
94 | "\n" | |
45db4bc1 | 95 | " --export [type=]nbd,id=<id>,node-name=<node-name>[,name=<export-name>]\n" |
39411120 KW |
96 | " [,writable=on|off][,bitmap=<name>]\n" |
97 | " export the specified block node over NBD\n" | |
98 | " (requires --nbd-server)\n" | |
99 | "\n" | |
2af282ec KW |
100 | " --monitor [chardev=]name[,mode=control][,pretty[=on|off]]\n" |
101 | " configure a QMP monitor\n" | |
102 | "\n" | |
eed8b691 | 103 | " --nbd-server addr.type=inet,addr.host=<host>,addr.port=<port>\n" |
1c8222b0 | 104 | " [,tls-creds=<id>][,tls-authz=<id>][,max-connections=<n>]\n" |
eed8b691 | 105 | " --nbd-server addr.type=unix,addr.path=<path>\n" |
1c8222b0 | 106 | " [,tls-creds=<id>][,tls-authz=<id>][,max-connections=<n>]\n" |
eed8b691 KW |
107 | " start an NBD server for exporting block nodes\n" |
108 | "\n" | |
d6da78b5 KW |
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" | |
117 | "\n" | |
f353415f KW |
118 | QEMU_HELP_BOTTOM "\n", |
119 | error_get_progname()); | |
120 | } | |
121 | ||
14837c64 KW |
122 | enum { |
123 | OPTION_BLOCKDEV = 256, | |
5e6911cf | 124 | OPTION_CHARDEV, |
39411120 | 125 | OPTION_EXPORT, |
2af282ec | 126 | OPTION_MONITOR, |
eed8b691 | 127 | OPTION_NBD_SERVER, |
d6da78b5 KW |
128 | OPTION_OBJECT, |
129 | }; | |
130 | ||
5e6911cf KW |
131 | extern QemuOptsList qemu_chardev_opts; |
132 | ||
d6da78b5 KW |
133 | static QemuOptsList qemu_object_opts = { |
134 | .name = "object", | |
135 | .implied_opt_name = "qom-type", | |
136 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
137 | .desc = { | |
138 | { } | |
139 | }, | |
14837c64 KW |
140 | }; |
141 | ||
2af282ec KW |
142 | static void init_qmp_commands(void) |
143 | { | |
144 | qmp_init_marshal(&qmp_commands); | |
145 | qmp_register_command(&qmp_commands, "query-qmp-schema", | |
146 | qmp_query_qmp_schema, QCO_ALLOW_PRECONFIG); | |
147 | ||
148 | QTAILQ_INIT(&qmp_cap_negotiation_commands); | |
149 | qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities", | |
150 | qmp_marshal_qmp_capabilities, QCO_ALLOW_PRECONFIG); | |
151 | } | |
152 | ||
f353415f KW |
153 | static void process_options(int argc, char *argv[]) |
154 | { | |
155 | int c; | |
156 | ||
157 | static const struct option long_options[] = { | |
14837c64 | 158 | {"blockdev", required_argument, NULL, OPTION_BLOCKDEV}, |
5e6911cf | 159 | {"chardev", required_argument, NULL, OPTION_CHARDEV}, |
39411120 | 160 | {"export", required_argument, NULL, OPTION_EXPORT}, |
f353415f | 161 | {"help", no_argument, NULL, 'h'}, |
2af282ec | 162 | {"monitor", required_argument, NULL, OPTION_MONITOR}, |
eed8b691 | 163 | {"nbd-server", required_argument, NULL, OPTION_NBD_SERVER}, |
d6da78b5 | 164 | {"object", required_argument, NULL, OPTION_OBJECT}, |
f353415f KW |
165 | {"trace", required_argument, NULL, 'T'}, |
166 | {"version", no_argument, NULL, 'V'}, | |
167 | {0, 0, 0, 0} | |
168 | }; | |
169 | ||
170 | /* | |
171 | * In contrast to the system emulator, options are processed in the order | |
172 | * they are given on the command lines. This means that things must be | |
173 | * defined first before they can be referenced in another option. | |
174 | */ | |
175 | while ((c = getopt_long(argc, argv, "hT:V", long_options, NULL)) != -1) { | |
176 | switch (c) { | |
177 | case '?': | |
178 | exit(EXIT_FAILURE); | |
179 | case 'h': | |
180 | help(); | |
181 | exit(EXIT_SUCCESS); | |
182 | case 'T': | |
92eecfff PB |
183 | trace_opt_parse(optarg); |
184 | trace_init_file(); | |
185 | break; | |
f353415f KW |
186 | case 'V': |
187 | printf("qemu-storage-daemon version " | |
188 | QEMU_FULL_VERSION "\n" QEMU_COPYRIGHT "\n"); | |
189 | exit(EXIT_SUCCESS); | |
14837c64 KW |
190 | case OPTION_BLOCKDEV: |
191 | { | |
192 | Visitor *v; | |
193 | BlockdevOptions *options; | |
194 | ||
195 | v = qobject_input_visitor_new_str(optarg, "driver", | |
196 | &error_fatal); | |
197 | ||
198 | visit_type_BlockdevOptions(v, NULL, &options, &error_fatal); | |
199 | visit_free(v); | |
200 | ||
201 | qmp_blockdev_add(options, &error_fatal); | |
202 | qapi_free_BlockdevOptions(options); | |
203 | break; | |
204 | } | |
5e6911cf KW |
205 | case OPTION_CHARDEV: |
206 | { | |
207 | /* TODO This interface is not stable until we QAPIfy it */ | |
208 | QemuOpts *opts = qemu_opts_parse_noisily(&qemu_chardev_opts, | |
209 | optarg, true); | |
210 | if (opts == NULL) { | |
211 | exit(EXIT_FAILURE); | |
212 | } | |
213 | ||
214 | if (!qemu_chr_new_from_opts(opts, NULL, &error_fatal)) { | |
215 | /* No error, but NULL returned means help was printed */ | |
216 | exit(EXIT_SUCCESS); | |
217 | } | |
218 | qemu_opts_del(opts); | |
219 | break; | |
220 | } | |
39411120 KW |
221 | case OPTION_EXPORT: |
222 | { | |
223 | Visitor *v; | |
143ea767 | 224 | BlockExportOptions *export; |
39411120 KW |
225 | |
226 | v = qobject_input_visitor_new_str(optarg, "type", &error_fatal); | |
143ea767 | 227 | visit_type_BlockExportOptions(v, NULL, &export, &error_fatal); |
39411120 KW |
228 | visit_free(v); |
229 | ||
060102ad | 230 | qmp_block_export_add(export, &error_fatal); |
143ea767 | 231 | qapi_free_BlockExportOptions(export); |
39411120 KW |
232 | break; |
233 | } | |
2af282ec KW |
234 | case OPTION_MONITOR: |
235 | { | |
236 | Visitor *v; | |
237 | MonitorOptions *monitor; | |
238 | ||
239 | v = qobject_input_visitor_new_str(optarg, "chardev", | |
240 | &error_fatal); | |
241 | visit_type_MonitorOptions(v, NULL, &monitor, &error_fatal); | |
242 | visit_free(v); | |
243 | ||
244 | /* TODO Catch duplicate monitor IDs */ | |
245 | monitor_init(monitor, false, &error_fatal); | |
246 | qapi_free_MonitorOptions(monitor); | |
247 | break; | |
248 | } | |
eed8b691 KW |
249 | case OPTION_NBD_SERVER: |
250 | { | |
251 | Visitor *v; | |
252 | NbdServerOptions *options; | |
253 | ||
254 | v = qobject_input_visitor_new_str(optarg, NULL, &error_fatal); | |
255 | visit_type_NbdServerOptions(v, NULL, &options, &error_fatal); | |
256 | visit_free(v); | |
257 | ||
258 | nbd_server_start_options(options, &error_fatal); | |
259 | qapi_free_NbdServerOptions(options); | |
260 | break; | |
261 | } | |
d6da78b5 KW |
262 | case OPTION_OBJECT: |
263 | { | |
d6da78b5 | 264 | QDict *args; |
8db1efd3 | 265 | bool help; |
d6da78b5 | 266 | |
8db1efd3 KW |
267 | args = keyval_parse(optarg, "qom-type", &help, &error_fatal); |
268 | if (help) { | |
269 | user_creatable_print_help_from_qdict(args); | |
d6da78b5 KW |
270 | exit(EXIT_SUCCESS); |
271 | } | |
eaae29ef | 272 | user_creatable_add_dict(args, true, &error_fatal); |
d6da78b5 | 273 | qobject_unref(args); |
d6da78b5 KW |
274 | break; |
275 | } | |
f353415f KW |
276 | default: |
277 | g_assert_not_reached(); | |
278 | } | |
279 | } | |
280 | if (optind != argc) { | |
281 | error_report("Unexpected argument: %s", argv[optind]); | |
282 | exit(EXIT_FAILURE); | |
283 | } | |
284 | } | |
285 | ||
286 | int main(int argc, char *argv[]) | |
287 | { | |
288 | #ifdef CONFIG_POSIX | |
289 | signal(SIGPIPE, SIG_IGN); | |
290 | #endif | |
291 | ||
292 | error_init(argv[0]); | |
293 | qemu_init_exec_dir(argv[0]); | |
aa70683d | 294 | os_setup_signal_handling(); |
f353415f KW |
295 | |
296 | module_call_init(MODULE_INIT_QOM); | |
297 | module_call_init(MODULE_INIT_TRACE); | |
5b99bdea | 298 | qemu_add_opts(&qemu_object_opts); |
f353415f KW |
299 | qemu_add_opts(&qemu_trace_opts); |
300 | qcrypto_init(&error_fatal); | |
301 | bdrv_init(); | |
2af282ec KW |
302 | monitor_init_globals_core(); |
303 | init_qmp_commands(); | |
f353415f KW |
304 | |
305 | if (!trace_init_backends()) { | |
306 | return EXIT_FAILURE; | |
307 | } | |
308 | qemu_set_log(LOG_TRACE); | |
309 | ||
310 | qemu_init_main_loop(&error_fatal); | |
311 | process_options(argc, argv); | |
312 | ||
aa70683d KW |
313 | while (!exit_requested) { |
314 | main_loop_wait(false); | |
315 | } | |
316 | ||
f10802d2 SH |
317 | monitor_cleanup(); |
318 | qemu_chr_cleanup(); | |
319 | user_creatable_cleanup(); | |
320 | ||
f353415f KW |
321 | return EXIT_SUCCESS; |
322 | } |