Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 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" |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 31 | #include "block/nbd.h" |
Kevin Wolf | 5e6911c | 2020-02-24 15:30:01 +0100 | [diff] [blame] | 32 | #include "chardev/char.h" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 33 | #include "crypto/init.h" |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 34 | #include "monitor/monitor.h" |
| 35 | #include "monitor/monitor-internal.h" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 36 | |
| 37 | #include "qapi/error.h" |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 38 | #include "qapi/qapi-visit-block-core.h" |
Kevin Wolf | 5daa6bf | 2020-09-24 17:26:48 +0200 | [diff] [blame] | 39 | #include "qapi/qapi-visit-block-export.h" |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 40 | #include "qapi/qapi-visit-control.h" |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 41 | #include "qapi/qmp/qdict.h" |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 42 | #include "qapi/qmp/qstring.h" |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 43 | #include "qapi/qobject-input-visitor.h" |
| 44 | |
Marc-André Lureau | 49f9522 | 2022-04-20 17:25:49 +0400 | [diff] [blame] | 45 | #include "qemu/help-texts.h" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 46 | #include "qemu-version.h" |
Marc-André Lureau | 06680b1 | 2022-05-25 16:41:26 +0200 | [diff] [blame] | 47 | #include "qemu/cutils.h" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 48 | #include "qemu/config-file.h" |
| 49 | #include "qemu/error-report.h" |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 50 | #include "qemu/help_option.h" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 51 | #include "qemu/log.h" |
| 52 | #include "qemu/main-loop.h" |
| 53 | #include "qemu/module.h" |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 54 | #include "qemu/option.h" |
| 55 | #include "qom/object_interfaces.h" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 56 | |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 57 | #include "storage-daemon/qapi/qapi-commands.h" |
| 58 | #include "storage-daemon/qapi/qapi-init-commands.h" |
| 59 | |
Kevin Wolf | aa70683 | 2020-02-24 15:30:00 +0100 | [diff] [blame] | 60 | #include "sysemu/runstate.h" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 61 | #include "trace/control.h" |
| 62 | |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 63 | static const char *pid_file; |
Hanna Reitz | 9d8f823 | 2022-06-09 14:26:59 +0200 | [diff] [blame] | 64 | static char *pid_file_realpath; |
Kevin Wolf | aa70683 | 2020-02-24 15:30:00 +0100 | [diff] [blame] | 65 | static volatile bool exit_requested = false; |
| 66 | |
| 67 | void qemu_system_killed(int signal, pid_t pid) |
| 68 | { |
| 69 | exit_requested = true; |
| 70 | } |
| 71 | |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 72 | void qmp_quit(Error **errp) |
| 73 | { |
| 74 | exit_requested = true; |
| 75 | } |
| 76 | |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 77 | static void help(void) |
| 78 | { |
| 79 | printf( |
| 80 | "Usage: %s [options]\n" |
| 81 | "QEMU storage daemon\n" |
| 82 | "\n" |
| 83 | " -h, --help display this help and exit\n" |
| 84 | " -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
| 85 | " specify tracing options\n" |
| 86 | " -V, --version output version information and exit\n" |
| 87 | "\n" |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 88 | " --blockdev [driver=]<driver>[,node-name=<N>][,discard=ignore|unmap]\n" |
| 89 | " [,cache.direct=on|off][,cache.no-flush=on|off]\n" |
| 90 | " [,read-only=on|off][,auto-read-only=on|off]\n" |
| 91 | " [,force-share=on|off][,detect-zeroes=on|off|unmap]\n" |
| 92 | " [,driver specific parameters...]\n" |
| 93 | " configure a block backend\n" |
| 94 | "\n" |
Kevin Wolf | 5e6911c | 2020-02-24 15:30:01 +0100 | [diff] [blame] | 95 | " --chardev <options> configure a character device backend\n" |
| 96 | " (see the qemu(1) man page for possible options)\n" |
| 97 | "\n" |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 98 | " --daemonize daemonize the process, and have the parent exit\n" |
| 99 | " once startup is complete\n" |
| 100 | "\n" |
Kevin Wolf | 45db4bc | 2020-09-30 15:39:09 +0200 | [diff] [blame] | 101 | " --export [type=]nbd,id=<id>,node-name=<node-name>[,name=<export-name>]\n" |
Kevin Wolf | 3941112 | 2020-02-24 15:29:59 +0100 | [diff] [blame] | 102 | " [,writable=on|off][,bitmap=<name>]\n" |
| 103 | " export the specified block node over NBD\n" |
| 104 | " (requires --nbd-server)\n" |
| 105 | "\n" |
Philippe Mathieu-Daudé | d1bbd96 | 2021-08-16 20:04:42 +0200 | [diff] [blame] | 106 | #ifdef CONFIG_FUSE |
Max Reitz | 220222a | 2021-02-17 12:58:44 +0100 | [diff] [blame] | 107 | " --export [type=]fuse,id=<id>,node-name=<node-name>,mountpoint=<file>\n" |
Hanna Reitz | cb90ec3 | 2022-01-31 11:31:24 +0100 | [diff] [blame] | 108 | " [,growable=on|off][,writable=on|off][,allow-other=on|off|auto]\n" |
Max Reitz | 220222a | 2021-02-17 12:58:44 +0100 | [diff] [blame] | 109 | " export the specified block node over FUSE\n" |
| 110 | "\n" |
Philippe Mathieu-Daudé | d1bbd96 | 2021-08-16 20:04:42 +0200 | [diff] [blame] | 111 | #endif /* CONFIG_FUSE */ |
Philippe Mathieu-Daudé | c8cbc95 | 2022-01-07 11:54:19 +0100 | [diff] [blame] | 112 | #ifdef CONFIG_VHOST_USER_BLK_SERVER |
| 113 | " --export [type=]vhost-user-blk,id=<id>,node-name=<node-name>,\n" |
| 114 | " addr.type=unix,addr.path=<socket-path>[,writable=on|off]\n" |
| 115 | " [,logical-block-size=<block-size>][,num-queues=<num-queues>]\n" |
| 116 | " export the specified block node as a\n" |
| 117 | " vhost-user-blk device over UNIX domain socket\n" |
| 118 | " --export [type=]vhost-user-blk,id=<id>,node-name=<node-name>,\n" |
Kevin Wolf | e66e665 | 2022-01-25 16:15:14 +0100 | [diff] [blame] | 119 | " addr.type=fd,addr.str=<fd>[,writable=on|off]\n" |
Philippe Mathieu-Daudé | c8cbc95 | 2022-01-07 11:54:19 +0100 | [diff] [blame] | 120 | " [,logical-block-size=<block-size>][,num-queues=<num-queues>]\n" |
| 121 | " export the specified block node as a\n" |
| 122 | " vhost-user-blk device over file descriptor\n" |
| 123 | "\n" |
| 124 | #endif /* CONFIG_VHOST_USER_BLK_SERVER */ |
Stefan Hajnoczi | ca941c4 | 2022-05-25 13:19:47 +0100 | [diff] [blame] | 125 | #ifdef CONFIG_VDUSE_BLK_EXPORT |
| 126 | " --export [type=]vduse-blk,id=<id>,node-name=<node-name>\n" |
Xie Yongji | 779d82e | 2022-06-14 13:15:32 +0800 | [diff] [blame] | 127 | " ,name=<vduse-name>[,writable=on|off]\n" |
| 128 | " [,num-queues=<num-queues>][,queue-size=<queue-size>]\n" |
Stefan Hajnoczi | ca941c4 | 2022-05-25 13:19:47 +0100 | [diff] [blame] | 129 | " [,logical-block-size=<logical-block-size>]\n" |
Xie Yongji | 0862a08 | 2022-06-14 13:15:31 +0800 | [diff] [blame] | 130 | " [,serial=<serial-number>]\n" |
Xie Yongji | 779d82e | 2022-06-14 13:15:32 +0800 | [diff] [blame] | 131 | " export the specified block node as a\n" |
| 132 | " vduse-blk device\n" |
Stefan Hajnoczi | ca941c4 | 2022-05-25 13:19:47 +0100 | [diff] [blame] | 133 | "\n" |
| 134 | #endif /* CONFIG_VDUSE_BLK_EXPORT */ |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 135 | " --monitor [chardev=]name[,mode=control][,pretty[=on|off]]\n" |
| 136 | " configure a QMP monitor\n" |
| 137 | "\n" |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 138 | " --nbd-server addr.type=inet,addr.host=<host>,addr.port=<port>\n" |
Kevin Wolf | 1c8222b | 2020-09-24 17:26:54 +0200 | [diff] [blame] | 139 | " [,tls-creds=<id>][,tls-authz=<id>][,max-connections=<n>]\n" |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 140 | " --nbd-server addr.type=unix,addr.path=<path>\n" |
Kevin Wolf | 1c8222b | 2020-09-24 17:26:54 +0200 | [diff] [blame] | 141 | " [,tls-creds=<id>][,tls-authz=<id>][,max-connections=<n>]\n" |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 142 | " start an NBD server for exporting block nodes\n" |
| 143 | "\n" |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 144 | " --object help list object types that can be added\n" |
| 145 | " --object <type>,help list properties for the given object type\n" |
| 146 | " --object <type>[,<property>=<value>...]\n" |
| 147 | " create a new object of type <type>, setting\n" |
| 148 | " properties in the order they are specified. Note\n" |
| 149 | " that the 'id' property must be set.\n" |
| 150 | " See the qemu(1) man page for documentation of the\n" |
| 151 | " objects that can be added.\n" |
| 152 | "\n" |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 153 | " --pidfile <path> write process ID to a file after startup\n" |
| 154 | "\n" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 155 | QEMU_HELP_BOTTOM "\n", |
Marc-André Lureau | 336d354 | 2022-02-21 14:11:47 +0400 | [diff] [blame] | 156 | g_get_prgname()); |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 157 | } |
| 158 | |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 159 | enum { |
| 160 | OPTION_BLOCKDEV = 256, |
Kevin Wolf | 5e6911c | 2020-02-24 15:30:01 +0100 | [diff] [blame] | 161 | OPTION_CHARDEV, |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 162 | OPTION_DAEMONIZE, |
Kevin Wolf | 3941112 | 2020-02-24 15:29:59 +0100 | [diff] [blame] | 163 | OPTION_EXPORT, |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 164 | OPTION_MONITOR, |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 165 | OPTION_NBD_SERVER, |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 166 | OPTION_OBJECT, |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 167 | OPTION_PIDFILE, |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 168 | }; |
| 169 | |
Kevin Wolf | 5e6911c | 2020-02-24 15:30:01 +0100 | [diff] [blame] | 170 | extern QemuOptsList qemu_chardev_opts; |
| 171 | |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 172 | static void init_qmp_commands(void) |
| 173 | { |
| 174 | qmp_init_marshal(&qmp_commands); |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 175 | |
| 176 | QTAILQ_INIT(&qmp_cap_negotiation_commands); |
| 177 | qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities", |
Markus Armbruster | 6604e47 | 2021-10-28 12:25:17 +0200 | [diff] [blame] | 178 | qmp_marshal_qmp_capabilities, |
| 179 | QCO_ALLOW_PRECONFIG, 0); |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 180 | } |
| 181 | |
Paolo Bonzini | 501a4b3 | 2021-03-01 10:28:44 -0500 | [diff] [blame] | 182 | static int getopt_set_loc(int argc, char **argv, const char *optstring, |
| 183 | const struct option *longopts) |
| 184 | { |
| 185 | int c, save_index; |
| 186 | |
| 187 | optarg = NULL; |
| 188 | save_index = optind; |
| 189 | c = getopt_long(argc, argv, optstring, longopts, NULL); |
| 190 | if (optarg) { |
| 191 | loc_set_cmdline(argv, save_index, MAX(1, optind - save_index)); |
| 192 | } |
| 193 | return c; |
| 194 | } |
| 195 | |
Hanna Reitz | 79d51d7 | 2022-03-03 17:48:12 +0100 | [diff] [blame] | 196 | /** |
| 197 | * Process QSD command-line arguments. |
| 198 | * |
| 199 | * This is done in two passes: |
| 200 | * |
| 201 | * First (@pre_init_pass is true), we do a pass where all global |
| 202 | * arguments pertaining to the QSD process (like --help or --daemonize) |
| 203 | * are processed. This pass is done before most of the QEMU-specific |
| 204 | * initialization steps (e.g. initializing the block layer or QMP), and |
| 205 | * so must only process arguments that are not really QEMU-specific. |
| 206 | * |
| 207 | * Second (@pre_init_pass is false), we (sequentially) process all |
| 208 | * QEMU/QSD-specific arguments. Many of these arguments are effectively |
| 209 | * translated to QMP commands (like --blockdev for blockdev-add, or |
| 210 | * --export for block-export-add). |
| 211 | */ |
| 212 | static void process_options(int argc, char *argv[], bool pre_init_pass) |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 213 | { |
| 214 | int c; |
| 215 | |
| 216 | static const struct option long_options[] = { |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 217 | {"blockdev", required_argument, NULL, OPTION_BLOCKDEV}, |
Kevin Wolf | 5e6911c | 2020-02-24 15:30:01 +0100 | [diff] [blame] | 218 | {"chardev", required_argument, NULL, OPTION_CHARDEV}, |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 219 | {"daemonize", no_argument, NULL, OPTION_DAEMONIZE}, |
Kevin Wolf | 3941112 | 2020-02-24 15:29:59 +0100 | [diff] [blame] | 220 | {"export", required_argument, NULL, OPTION_EXPORT}, |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 221 | {"help", no_argument, NULL, 'h'}, |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 222 | {"monitor", required_argument, NULL, OPTION_MONITOR}, |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 223 | {"nbd-server", required_argument, NULL, OPTION_NBD_SERVER}, |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 224 | {"object", required_argument, NULL, OPTION_OBJECT}, |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 225 | {"pidfile", required_argument, NULL, OPTION_PIDFILE}, |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 226 | {"trace", required_argument, NULL, 'T'}, |
| 227 | {"version", no_argument, NULL, 'V'}, |
| 228 | {0, 0, 0, 0} |
| 229 | }; |
| 230 | |
| 231 | /* |
Hanna Reitz | 79d51d7 | 2022-03-03 17:48:12 +0100 | [diff] [blame] | 232 | * In contrast to the system emulator, QEMU-specific options are processed |
| 233 | * in the order they are given on the command lines. This means that things |
| 234 | * must be defined first before they can be referenced in another option. |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 235 | */ |
Hanna Reitz | 79d51d7 | 2022-03-03 17:48:12 +0100 | [diff] [blame] | 236 | optind = 1; |
Paolo Bonzini | 501a4b3 | 2021-03-01 10:28:44 -0500 | [diff] [blame] | 237 | while ((c = getopt_set_loc(argc, argv, "-hT:V", long_options)) != -1) { |
Hanna Reitz | 79d51d7 | 2022-03-03 17:48:12 +0100 | [diff] [blame] | 238 | bool handle_option_pre_init; |
| 239 | |
| 240 | /* Should this argument be processed in the pre-init pass? */ |
| 241 | handle_option_pre_init = |
| 242 | c == '?' || |
| 243 | c == 'h' || |
| 244 | c == 'V' || |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 245 | c == OPTION_DAEMONIZE || |
Hanna Reitz | 79d51d7 | 2022-03-03 17:48:12 +0100 | [diff] [blame] | 246 | c == OPTION_PIDFILE; |
| 247 | |
| 248 | /* Process every option only in its respective pass */ |
| 249 | if (pre_init_pass != handle_option_pre_init) { |
| 250 | continue; |
| 251 | } |
| 252 | |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 253 | switch (c) { |
| 254 | case '?': |
| 255 | exit(EXIT_FAILURE); |
| 256 | case 'h': |
| 257 | help(); |
| 258 | exit(EXIT_SUCCESS); |
| 259 | case 'T': |
Paolo Bonzini | 92eecff | 2020-11-02 06:58:41 -0500 | [diff] [blame] | 260 | trace_opt_parse(optarg); |
| 261 | trace_init_file(); |
| 262 | break; |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 263 | case 'V': |
| 264 | printf("qemu-storage-daemon version " |
| 265 | QEMU_FULL_VERSION "\n" QEMU_COPYRIGHT "\n"); |
| 266 | exit(EXIT_SUCCESS); |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 267 | case OPTION_BLOCKDEV: |
| 268 | { |
| 269 | Visitor *v; |
| 270 | BlockdevOptions *options; |
| 271 | |
| 272 | v = qobject_input_visitor_new_str(optarg, "driver", |
| 273 | &error_fatal); |
| 274 | |
| 275 | visit_type_BlockdevOptions(v, NULL, &options, &error_fatal); |
| 276 | visit_free(v); |
| 277 | |
| 278 | qmp_blockdev_add(options, &error_fatal); |
| 279 | qapi_free_BlockdevOptions(options); |
| 280 | break; |
| 281 | } |
Kevin Wolf | 5e6911c | 2020-02-24 15:30:01 +0100 | [diff] [blame] | 282 | case OPTION_CHARDEV: |
| 283 | { |
| 284 | /* TODO This interface is not stable until we QAPIfy it */ |
| 285 | QemuOpts *opts = qemu_opts_parse_noisily(&qemu_chardev_opts, |
| 286 | optarg, true); |
| 287 | if (opts == NULL) { |
| 288 | exit(EXIT_FAILURE); |
| 289 | } |
| 290 | |
| 291 | if (!qemu_chr_new_from_opts(opts, NULL, &error_fatal)) { |
| 292 | /* No error, but NULL returned means help was printed */ |
| 293 | exit(EXIT_SUCCESS); |
| 294 | } |
| 295 | qemu_opts_del(opts); |
| 296 | break; |
| 297 | } |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 298 | case OPTION_DAEMONIZE: |
| 299 | if (os_set_daemonize(true) < 0) { |
Hanna Reitz | 1a8fd0e | 2022-06-09 14:28:52 +0200 | [diff] [blame] | 300 | /* |
| 301 | * --daemonize is parsed before monitor_init_globals_core(), so |
| 302 | * error_report() does not work yet |
| 303 | */ |
| 304 | fprintf(stderr, "--daemonize not supported in this build\n"); |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 305 | exit(EXIT_FAILURE); |
| 306 | } |
| 307 | break; |
Kevin Wolf | 3941112 | 2020-02-24 15:29:59 +0100 | [diff] [blame] | 308 | case OPTION_EXPORT: |
| 309 | { |
| 310 | Visitor *v; |
Kevin Wolf | 143ea76 | 2020-09-24 17:26:49 +0200 | [diff] [blame] | 311 | BlockExportOptions *export; |
Kevin Wolf | 3941112 | 2020-02-24 15:29:59 +0100 | [diff] [blame] | 312 | |
| 313 | v = qobject_input_visitor_new_str(optarg, "type", &error_fatal); |
Kevin Wolf | 143ea76 | 2020-09-24 17:26:49 +0200 | [diff] [blame] | 314 | visit_type_BlockExportOptions(v, NULL, &export, &error_fatal); |
Kevin Wolf | 3941112 | 2020-02-24 15:29:59 +0100 | [diff] [blame] | 315 | visit_free(v); |
| 316 | |
Kevin Wolf | 060102a | 2020-09-24 17:26:51 +0200 | [diff] [blame] | 317 | qmp_block_export_add(export, &error_fatal); |
Kevin Wolf | 143ea76 | 2020-09-24 17:26:49 +0200 | [diff] [blame] | 318 | qapi_free_BlockExportOptions(export); |
Kevin Wolf | 3941112 | 2020-02-24 15:29:59 +0100 | [diff] [blame] | 319 | break; |
| 320 | } |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 321 | case OPTION_MONITOR: |
| 322 | { |
| 323 | Visitor *v; |
| 324 | MonitorOptions *monitor; |
| 325 | |
| 326 | v = qobject_input_visitor_new_str(optarg, "chardev", |
| 327 | &error_fatal); |
| 328 | visit_type_MonitorOptions(v, NULL, &monitor, &error_fatal); |
| 329 | visit_free(v); |
| 330 | |
| 331 | /* TODO Catch duplicate monitor IDs */ |
| 332 | monitor_init(monitor, false, &error_fatal); |
| 333 | qapi_free_MonitorOptions(monitor); |
| 334 | break; |
| 335 | } |
Kevin Wolf | eed8b69 | 2020-02-24 15:29:57 +0100 | [diff] [blame] | 336 | case OPTION_NBD_SERVER: |
| 337 | { |
| 338 | Visitor *v; |
| 339 | NbdServerOptions *options; |
| 340 | |
| 341 | v = qobject_input_visitor_new_str(optarg, NULL, &error_fatal); |
| 342 | visit_type_NbdServerOptions(v, NULL, &options, &error_fatal); |
| 343 | visit_free(v); |
| 344 | |
| 345 | nbd_server_start_options(options, &error_fatal); |
| 346 | qapi_free_NbdServerOptions(options); |
| 347 | break; |
| 348 | } |
Kevin Wolf | d6da78b | 2020-02-24 15:29:56 +0100 | [diff] [blame] | 349 | case OPTION_OBJECT: |
Kevin Wolf | f375026 | 2021-02-17 12:06:20 +0100 | [diff] [blame] | 350 | user_creatable_process_cmdline(optarg); |
| 351 | break; |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 352 | case OPTION_PIDFILE: |
| 353 | pid_file = optarg; |
| 354 | break; |
Paolo Bonzini | a5ef350 | 2021-03-01 10:28:43 -0500 | [diff] [blame] | 355 | case 1: |
Paolo Bonzini | 501a4b3 | 2021-03-01 10:28:44 -0500 | [diff] [blame] | 356 | error_report("Unexpected argument"); |
Paolo Bonzini | a5ef350 | 2021-03-01 10:28:43 -0500 | [diff] [blame] | 357 | exit(EXIT_FAILURE); |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 358 | default: |
| 359 | g_assert_not_reached(); |
| 360 | } |
| 361 | } |
Paolo Bonzini | 501a4b3 | 2021-03-01 10:28:44 -0500 | [diff] [blame] | 362 | loc_set_none(); |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 363 | } |
| 364 | |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 365 | static void pid_file_cleanup(void) |
| 366 | { |
Hanna Reitz | 9d8f823 | 2022-06-09 14:26:59 +0200 | [diff] [blame] | 367 | unlink(pid_file_realpath); |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | static void pid_file_init(void) |
| 371 | { |
| 372 | Error *err = NULL; |
| 373 | |
| 374 | if (!pid_file) { |
| 375 | return; |
| 376 | } |
| 377 | |
| 378 | if (!qemu_write_pidfile(pid_file, &err)) { |
| 379 | error_reportf_err(err, "cannot create PID file: "); |
| 380 | exit(EXIT_FAILURE); |
| 381 | } |
| 382 | |
Hanna Reitz | 9d8f823 | 2022-06-09 14:26:59 +0200 | [diff] [blame] | 383 | pid_file_realpath = g_malloc(PATH_MAX); |
| 384 | if (!realpath(pid_file, pid_file_realpath)) { |
| 385 | error_report("cannot resolve PID file path: %s: %s", |
| 386 | pid_file, strerror(errno)); |
| 387 | unlink(pid_file); |
| 388 | exit(EXIT_FAILURE); |
| 389 | } |
| 390 | |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 391 | atexit(pid_file_cleanup); |
| 392 | } |
| 393 | |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 394 | int main(int argc, char *argv[]) |
| 395 | { |
| 396 | #ifdef CONFIG_POSIX |
| 397 | signal(SIGPIPE, SIG_IGN); |
| 398 | #endif |
| 399 | |
| 400 | error_init(argv[0]); |
| 401 | qemu_init_exec_dir(argv[0]); |
Kevin Wolf | aa70683 | 2020-02-24 15:30:00 +0100 | [diff] [blame] | 402 | os_setup_signal_handling(); |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 403 | |
Hanna Reitz | 79d51d7 | 2022-03-03 17:48:12 +0100 | [diff] [blame] | 404 | process_options(argc, argv, true); |
| 405 | |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 406 | os_daemonize(); |
| 407 | |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 408 | module_call_init(MODULE_INIT_QOM); |
| 409 | module_call_init(MODULE_INIT_TRACE); |
| 410 | qemu_add_opts(&qemu_trace_opts); |
| 411 | qcrypto_init(&error_fatal); |
| 412 | bdrv_init(); |
Kevin Wolf | 2af282e | 2020-02-24 15:30:08 +0100 | [diff] [blame] | 413 | monitor_init_globals_core(); |
| 414 | init_qmp_commands(); |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 415 | |
| 416 | if (!trace_init_backends()) { |
| 417 | return EXIT_FAILURE; |
| 418 | } |
Richard Henderson | c5955f4 | 2022-04-17 11:29:44 -0700 | [diff] [blame] | 419 | qemu_set_log(LOG_TRACE, &error_fatal); |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 420 | |
| 421 | qemu_init_main_loop(&error_fatal); |
Hanna Reitz | 79d51d7 | 2022-03-03 17:48:12 +0100 | [diff] [blame] | 422 | process_options(argc, argv, false); |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 423 | |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 424 | /* |
| 425 | * Write the pid file after creating chardevs, exports, and NBD servers but |
| 426 | * before accepting connections. This ordering is documented. Do not change |
| 427 | * it. |
| 428 | */ |
| 429 | pid_file_init(); |
Hanna Reitz | 2525edd | 2022-03-03 17:48:13 +0100 | [diff] [blame] | 430 | os_setup_post(); |
Stefan Hajnoczi | 03d2b41 | 2021-03-02 14:27:46 +0000 | [diff] [blame] | 431 | |
Kevin Wolf | aa70683 | 2020-02-24 15:30:00 +0100 | [diff] [blame] | 432 | while (!exit_requested) { |
| 433 | main_loop_wait(false); |
| 434 | } |
| 435 | |
Sergio Lopez | 1895b97 | 2021-02-01 13:50:32 +0100 | [diff] [blame] | 436 | blk_exp_close_all(); |
Max Reitz | b55a3c8 | 2020-10-27 20:05:56 +0100 | [diff] [blame] | 437 | bdrv_drain_all_begin(); |
Kevin Wolf | e215777 | 2021-03-09 13:18:14 +0100 | [diff] [blame] | 438 | job_cancel_sync_all(); |
Max Reitz | b55a3c8 | 2020-10-27 20:05:56 +0100 | [diff] [blame] | 439 | bdrv_close_all(); |
| 440 | |
Stefan Hajnoczi | f10802d | 2020-06-19 11:11:32 +0100 | [diff] [blame] | 441 | monitor_cleanup(); |
| 442 | qemu_chr_cleanup(); |
| 443 | user_creatable_cleanup(); |
| 444 | |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 445 | return EXIT_SUCCESS; |
| 446 | } |