projects / thirdparty / systemd.git / blame
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|---|---|---|
| 9f235308 LP |
1 | <?xml version='1.0'?> <!--*-nxml-*--> |
| 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
| 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
| 4 | ||
| 5 | <!-- | |
| 6 | This file is part of systemd. | |
| 7 | ||
| 8 | Copyright 2010 Lennart Poettering | |
| 9 | ||
| 10 | systemd is free software; you can redistribute it and/or modify it | |
| 5430f7f2 LP |
11 | under the terms of the GNU Lesser General Public License as published by |
| 12 | the Free Software Foundation; either version 2.1 of the License, or | |
| 9f235308 LP |
13 | (at your option) any later version. |
| 14 | ||
| 15 | systemd is distributed in the hope that it will be useful, but | |
| 16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 5430f7f2 | 18 | Lesser General Public License for more details. |
| 9f235308 | 19 | |
| 5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
| 9f235308 LP |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| 22 | --> | |
| 23 | ||
| 24 | <refentry id="systemd.special"> | |
| 25 | ||
| 26 | <refentryinfo> | |
| 27 | <title>systemd.special</title> | |
| 28 | <productname>systemd</productname> | |
| 29 | ||
| 30 | <authorgroup> | |
| 31 | <author> | |
| 32 | <contrib>Developer</contrib> | |
| 33 | <firstname>Lennart</firstname> | |
| 34 | <surname>Poettering</surname> | |
| 35 | <email>lennart@poettering.net</email> | |
| 36 | </author> | |
| 37 | </authorgroup> | |
| 38 | </refentryinfo> | |
| 39 | ||
| 40 | <refmeta> | |
| 41 | <refentrytitle>systemd.special</refentrytitle> | |
| 42 | <manvolnum>7</manvolnum> | |
| 43 | </refmeta> | |
| 44 | ||
| 45 | <refnamediv> | |
| 46 | <refname>systemd.special</refname> | |
| feb88c9f | 47 | <refpurpose>Special systemd units</refpurpose> |
| 9f235308 LP |
48 | </refnamediv> |
| 49 | ||
| 50 | <refsynopsisdiv> | |
| 9f2c5942 | 51 | <para><filename>basic.target</filename>, |
| 49dbfa7b | 52 | <filename>bluetooth.target</filename>, |
| 9f2c5942 | 53 | <filename>ctrl-alt-del.target</filename>, |
| 49dbfa7b | 54 | <filename>cryptsetup.target</filename>, |
| 83bda358 | 55 | <filename>dbus.service</filename>, |
| feb88c9f | 56 | <filename>dbus.socket</filename>, |
| 9f2c5942 | 57 | <filename>default.target</filename>, |
| 1e287fe3 | 58 | <filename>display-manager.service</filename>, |
| f057408c | 59 | <filename>emergency.target</filename>, |
| 0e0320e0 LP |
60 | <filename>exit.target</filename>, |
| 61 | <filename>final.target</filename>, | |
| 49dbfa7b | 62 | <filename>getty.target</filename>, |
| 9f2c5942 | 63 | <filename>graphical.target</filename>, |
| 6edd7d0a | 64 | <filename>hibernate.target</filename>, |
| feb88c9f | 65 | <filename>http-daemon.target</filename>, |
| 9f2c5942 LP |
66 | <filename>halt.target</filename>, |
| 67 | <filename>kbrequest.target</filename>, | |
| feb88c9f | 68 | <filename>kexec.target</filename>, |
| 9f2c5942 | 69 | <filename>local-fs.target</filename>, |
| 21e557ed | 70 | <filename>local-fs-pre.target</filename>, |
| 683f468c | 71 | <filename>mail-transfer-agent.target</filename>, |
| 9f2c5942 LP |
72 | <filename>multi-user.target</filename>, |
| 73 | <filename>network.target</filename>, | |
| 74 | <filename>nss-lookup.target</filename>, | |
| 49dbfa7b | 75 | <filename>nss-user-lookup.target</filename>, |
| 9f2c5942 | 76 | <filename>poweroff.target</filename>, |
| 49dbfa7b | 77 | <filename>printer.target</filename>, |
| 9f2c5942 LP |
78 | <filename>reboot.target</filename>, |
| 79 | <filename>remote-fs.target</filename>, | |
| 21e557ed | 80 | <filename>remote-fs-pre.target</filename>, |
| 9f2c5942 LP |
81 | <filename>rescue.target</filename>, |
| 82 | <filename>rpcbind.target</filename>, | |
| 9f2c5942 LP |
83 | <filename>runlevel2.target</filename>, |
| 84 | <filename>runlevel3.target</filename>, | |
| 85 | <filename>runlevel4.target</filename>, | |
| 86 | <filename>runlevel5.target</filename>, | |
| 9f2c5942 LP |
87 | <filename>shutdown.target</filename>, |
| 88 | <filename>sigpwr.target</filename>, | |
| 6edd7d0a | 89 | <filename>sleep.target</filename>, |
| 49dbfa7b | 90 | <filename>smartcard.target</filename>, |
| 9f2c5942 | 91 | <filename>sockets.target</filename>, |
| 49dbfa7b | 92 | <filename>sound.target</filename>, |
| 6edd7d0a | 93 | <filename>suspend.target</filename>, |
| 9f2c5942 | 94 | <filename>swap.target</filename>, |
| f92a18f5 | 95 | <filename>sysinit.target</filename>, |
| feb88c9f | 96 | <filename>syslog.socket</filename>, |
| 62adf224 | 97 | <filename>syslog.target</filename>, |
| f5ccf26d | 98 | <filename>system-update.target</filename>, |
| db47cc2a | 99 | <filename>time-sync.target</filename>, |
| 3b6fdb5b | 100 | <filename>umount.target</filename></para> |
| 9f235308 LP |
101 | </refsynopsisdiv> |
| 102 | ||
| 103 | <refsect1> | |
| 104 | <title>Description</title> | |
| 105 | ||
| 106 | <para>A few units are treated specially by | |
| 107 | systemd. They have special internal semantics and | |
| 108 | cannot be renamed.</para> | |
| 109 | </refsect1> | |
| 110 | ||
| 111 | <refsect1> | |
| 112 | <title>Special System Units</title> | |
| 113 | ||
| 114 | <variablelist> | |
| bd3d19a4 LP |
115 | <varlistentry> |
| 116 | <term><filename>basic.target</filename></term> | |
| 117 | <listitem> | |
| 118 | <para>A special target unit | |
| 119 | covering early boot-up.</para> | |
| 120 | <para>systemd automatically | |
| 121 | adds dependencies of the types | |
| 122 | Requires and After for this | |
| 123 | target unit to all SysV | |
| 124 | service units configured for | |
| 125 | runlevel 1 to 5.</para> | |
| af62c704 KS |
126 | <para>Usually this should pull-in |
| 127 | all sockets, mount points, | |
| f92a18f5 LP |
128 | swap devices and other basic |
| 129 | initialization necessary for | |
| 130 | the general purpose | |
| af62c704 | 131 | daemons. Most normal daemons |
| f92a18f5 LP |
132 | should have dependencies of |
| 133 | type After and Requires on | |
| 134 | this unit.</para> | |
| bd3d19a4 LP |
135 | </listitem> |
| 136 | </varlistentry> | |
| 49dbfa7b LP |
137 | <varlistentry> |
| 138 | <term><filename>bluetooth.target</filename></term> | |
| 139 | <listitem> | |
| 140 | <para>This target is started | |
| 141 | automatically as soon as a | |
| 142 | bluetooth controller is | |
| 143 | plugged in or becomes | |
| 144 | available at boot.</para> | |
| 145 | </listitem> | |
| 146 | </varlistentry> | |
| bd3d19a4 LP |
147 | <varlistentry> |
| 148 | <term><filename>ctrl-alt-del.target</filename></term> | |
| 149 | <listitem> | |
| 150 | <para>systemd starts this | |
| 151 | target whenever | |
| 152 | Control+Alt+Del is pressed on | |
| 153 | the console. Usually this | |
| 154 | should be aliased (symlinked) | |
| 155 | to | |
| 156 | <filename>reboot.target</filename>.</para> | |
| 157 | </listitem> | |
| 158 | </varlistentry> | |
| 49dbfa7b LP |
159 | <varlistentry> |
| 160 | <term><filename>cryptsetup.target</filename></term> | |
| 161 | <listitem> | |
| 162 | <para>A target that pulls in | |
| 163 | setup services for all | |
| 164 | encrypted block | |
| 165 | devices.</para> | |
| 166 | </listitem> | |
| 167 | </varlistentry> | |
| eeb7229c | 168 | <varlistentry> |
| 83bda358 | 169 | <term><filename>dbus.service</filename></term> |
| eeb7229c LP |
170 | <listitem> |
| 171 | <para>A special unit for the | |
| 172 | D-Bus system bus. As soon as | |
| 173 | this service is fully started | |
| 174 | up systemd will connect to it | |
| 175 | and register its | |
| 176 | service.</para> | |
| 177 | </listitem> | |
| 178 | </varlistentry> | |
| feb88c9f LP |
179 | <varlistentry> |
| 180 | <term><filename>dbus.socket</filename></term> | |
| 181 | <listitem> | |
| 182 | <para>A special unit for the | |
| 183 | D-Bus system bus socket. All | |
| 184 | units with | |
| 185 | <literal>Type=dbus</literal> | |
| 186 | automatically gain a | |
| 187 | dependency on this | |
| 188 | unit.</para> | |
| 189 | </listitem> | |
| 190 | </varlistentry> | |
| bd3d19a4 LP |
191 | <varlistentry> |
| 192 | <term><filename>default.target</filename></term> | |
| 193 | <listitem> | |
| 194 | <para>The default unit systemd | |
| 195 | starts at bootup. Usually this | |
| 196 | should be aliased (symlinked) | |
| 197 | to | |
| 198 | <filename>multi-user.target</filename> | |
| 199 | or | |
| 200 | <filename>graphical.target</filename>.</para> | |
| 201 | <para>The default unit systemd | |
| 202 | starts at bootup can be | |
| 8f28cbcd | 203 | overridden with the |
| 2d87855a | 204 | <varname>systemd.unit=</varname> |
| bd3d19a4 LP |
205 | kernel command line option.</para> |
| 206 | </listitem> | |
| 207 | </varlistentry> | |
| 1e287fe3 LP |
208 | <varlistentry> |
| 209 | <term><filename>display-manager.service</filename></term> | |
| 210 | <listitem> | |
| 211 | <para>The display manager | |
| 212 | service. Usually this should | |
| 213 | be aliased (symlinked) to | |
| feb88c9f | 214 | <filename>gdm.service</filename> |
| 1e287fe3 LP |
215 | or a similar display manager |
| 216 | service.</para> | |
| 217 | <para>systemd automatically | |
| 218 | adds dependencies of type | |
| 219 | After for this target unit to | |
| 220 | all SysV init script service | |
| af62c704 | 221 | units with a LSB header |
| 1e287fe3 LP |
222 | referring to the |
| 223 | <literal>$x-display-manager</literal> | |
| 224 | facility, for compatibility | |
| 225 | with Debian.</para> | |
| 226 | </listitem> | |
| 227 | </varlistentry> | |
| 9f235308 | 228 | <varlistentry> |
| f057408c | 229 | <term><filename>emergency.target</filename></term> |
| 9f235308 | 230 | <listitem> |
| f057408c | 231 | <para>A special target unit |
| 9f235308 LP |
232 | that starts an emergency |
| 233 | shell on the main | |
| 234 | console. This unit is supposed | |
| 235 | to be used with the kernel | |
| 236 | command line option | |
| 2d87855a | 237 | <varname>systemd.unit=</varname> |
| 9f235308 LP |
238 | and has otherwise little use. |
| 239 | </para> | |
| 240 | </listitem> | |
| 241 | </varlistentry> | |
| feb88c9f LP |
242 | <varlistentry> |
| 243 | <term><filename>final.target</filename></term> | |
| 244 | <listitem> | |
| 245 | <para>A special target unit | |
| 246 | that is used during the | |
| 247 | shutdown logic and may be used | |
| 248 | to pull in late services after | |
| 249 | all normal services are | |
| 250 | already terminated and all | |
| 251 | mounts unmounted. | |
| 252 | </para> | |
| 253 | </listitem> | |
| 254 | </varlistentry> | |
| 49dbfa7b LP |
255 | <varlistentry> |
| 256 | <term><filename>getty.target</filename></term> | |
| 257 | <listitem> | |
| 258 | <para>A special target unit | |
| 259 | that pulls in all local TTY | |
| 260 | <filename>getty</filename> instances. | |
| 261 | </para> | |
| 262 | </listitem> | |
| 263 | </varlistentry> | |
| bd3d19a4 LP |
264 | <varlistentry> |
| 265 | <term><filename>graphical.target</filename></term> | |
| 266 | <listitem> | |
| 267 | <para>A special target unit | |
| 268 | for setting up a graphical | |
| 269 | login screen. This pulls in | |
| 270 | <filename>multi-user.target</filename>.</para> | |
| 271 | ||
| 272 | <para>Units that are needed | |
| 273 | for graphical login shall add | |
| 274 | Wants dependencies for their | |
| 275 | unit to this unit (or | |
| 276 | <filename>multi-user.target</filename>) | |
| 277 | during installation.</para> | |
| 278 | </listitem> | |
| 279 | </varlistentry> | |
| 6edd7d0a LP |
280 | <varlistentry> |
| 281 | <term><filename>hibernate.target</filename></term> | |
| 282 | <listitem> | |
| 283 | <para>A special target unit | |
| 284 | for hibernating the | |
| 285 | system. This pulls in | |
| 286 | <filename>sleep.target</filename>.</para> | |
| 287 | </listitem> | |
| 288 | </varlistentry> | |
| feb88c9f LP |
289 | <varlistentry> |
| 290 | <term><filename>http-daemon.target</filename></term> | |
| 291 | <listitem> | |
| 292 | <para>A target for pulling in | |
| 293 | an HTTP server if there is | |
| 294 | any.</para> | |
| 295 | <para>systemd automatically | |
| 296 | adds dependencies of type | |
| 297 | After for this target unit to | |
| 298 | all SysV init script service | |
| 299 | units with a LSB header | |
| 300 | referring to the | |
| 301 | <literal>$httpd</literal> | |
| 302 | facility.</para> | |
| 303 | </listitem> | |
| 304 | </varlistentry> | |
| bd3d19a4 LP |
305 | <varlistentry> |
| 306 | <term><filename>halt.target</filename></term> | |
| 307 | <listitem> | |
| 308 | <para>A special target unit | |
| 309 | for shutting down and halting the system.</para> | |
| 310 | ||
| 311 | <para>Applications wanting to | |
| 312 | halt the system should start | |
| 313 | this unit.</para> | |
| 314 | </listitem> | |
| 315 | </varlistentry> | |
| 316 | <varlistentry> | |
| 317 | <term><filename>kbrequest.target</filename></term> | |
| 318 | <listitem> | |
| 319 | <para>systemd starts this | |
| 320 | target whenever Alt+ArrowUp is | |
| 321 | pressed on the console. This | |
| 322 | is a good candidate to be | |
| 323 | aliased (symlinked) to | |
| 324 | <filename>rescue.target</filename>.</para> | |
| 325 | </listitem> | |
| 326 | </varlistentry> | |
| feb88c9f LP |
327 | <varlistentry> |
| 328 | <term><filename>kexec.target</filename></term> | |
| 329 | <listitem> | |
| 330 | <para>A special target unit | |
| 331 | for shutting down and rebooting the system via kexec.</para> | |
| 332 | ||
| 333 | <para>Applications wanting to | |
| 334 | reboot the system with kexec should start | |
| 335 | this unit.</para> | |
| 336 | </listitem> | |
| 337 | </varlistentry> | |
| 9f235308 LP |
338 | <varlistentry> |
| 339 | <term><filename>local-fs.target</filename></term> | |
| 340 | <listitem> | |
| 341 | <para>systemd automatically | |
| 342 | adds dependencies of type | |
| 343 | After to all mount units that | |
| bd3d19a4 LP |
344 | refer to local mount points |
| 345 | for this target unit. In | |
| 346 | addition, systemd adds | |
| 347 | dependencies of type Wants to | |
| 348 | this target unit for those | |
| 349 | mounts listed in | |
| 9f235308 LP |
350 | <filename>/etc/fstab</filename> |
| 351 | that have the | |
| 0d624a78 LP |
352 | <option>auto</option> and |
| 353 | <option>comment=systemd.mount</option> | |
| 9f235308 LP |
354 | mount options set.</para> |
| 355 | ||
| 356 | <para>systemd automatically | |
| 357 | adds dependencies of type | |
| bd3d19a4 LP |
358 | After for this target unit to |
| 359 | all SysV init script service | |
| 360 | units with an LSB header | |
| 361 | referring to the | |
| 9f235308 LP |
362 | <literal>$local_fs</literal> |
| 363 | facility.</para> | |
| 364 | </listitem> | |
| 365 | </varlistentry> | |
| 21e557ed LP |
366 | <varlistentry> |
| 367 | <term><filename>local-fs-pre.target</filename></term> | |
| 368 | <listitem> | |
| 369 | <para>This target unit is | |
| 370 | automatically ordered before | |
| 371 | all local mount points marked | |
| 372 | with <option>auto</option> | |
| 373 | (see above). It can be used to | |
| 374 | execute certain units before | |
| 375 | all local mounts.</para> | |
| 376 | </listitem> | |
| 377 | </varlistentry> | |
| 683f468c LP |
378 | <varlistentry> |
| 379 | <term><filename>mail-transfer-agent.target</filename></term> | |
| 380 | <listitem> | |
| 381 | <para>The mail transfer agent | |
| 382 | (MTA) service. Usually this | |
| af62c704 | 383 | should pull-in all units |
| 683f468c LP |
384 | necessary for |
| 385 | sending/receiving mails on the | |
| 386 | local host.</para> | |
| 387 | ||
| 388 | <para>systemd automatically | |
| 389 | adds dependencies of type | |
| 390 | After for this target unit to | |
| 391 | all SysV init script service | |
| 392 | units with an LSB header | |
| 393 | referring to the | |
| 8f28cbcd | 394 | <literal>$mail-transfer-agent</literal> |
| 683f468c LP |
395 | or |
| 396 | <literal>$mail-transport-agent</literal> | |
| 397 | facilities, for compatibility | |
| 398 | with Debian.</para> | |
| 399 | </listitem> | |
| 400 | </varlistentry> | |
| bd3d19a4 LP |
401 | <varlistentry> |
| 402 | <term><filename>multi-user.target</filename></term> | |
| 403 | <listitem> | |
| 404 | <para>A special target unit | |
| 405 | for setting up a multi-user | |
| 406 | system (non-graphical). This | |
| 407 | is pulled in by | |
| 408 | <filename>graphical.target</filename>.</para> | |
| 409 | ||
| 410 | <para>Units that are needed | |
| 411 | for a multi-user system shall | |
| 412 | add Wants dependencies to | |
| 413 | this unit for their unit during | |
| 414 | installation.</para> | |
| 415 | </listitem> | |
| 416 | </varlistentry> | |
| 9f235308 LP |
417 | <varlistentry> |
| 418 | <term><filename>network.target</filename></term> | |
| 419 | <listitem> | |
| 420 | <para>systemd automatically | |
| 421 | adds dependencies of type | |
| bd3d19a4 LP |
422 | After for this target unit to |
| 423 | all SysV init script service | |
| 424 | units with an LSB header | |
| 425 | referring to the | |
| 9f235308 LP |
426 | <literal>$network</literal> |
| 427 | facility.</para> | |
| 428 | </listitem> | |
| 429 | </varlistentry> | |
| 430 | <varlistentry> | |
| 431 | <term><filename>nss-lookup.target</filename></term> | |
| 432 | <listitem> | |
| 082694b7 LP |
433 | <para>A target that should be |
| 434 | used as synchronization point | |
| 435 | for all host/network name | |
| 436 | service lookups. Note that | |
| 437 | this is independent of | |
| 438 | user/group name lookups for | |
| 439 | which | |
| 440 | <filename>nss-user-lookup.target</filename> | |
| 441 | should be used. systemd | |
| 442 | automatically adds | |
| 443 | dependencies of type After for | |
| 444 | this target unit to all SysV | |
| 445 | init script service units with | |
| 446 | an LSB header referring to the | |
| 9f235308 LP |
447 | <literal>$named</literal> |
| 448 | facility.</para> | |
| 449 | </listitem> | |
| 450 | </varlistentry> | |
| 082694b7 LP |
451 | <varlistentry> |
| 452 | <term><filename>nss-user-lookup.target</filename></term> | |
| 453 | <listitem> | |
| 454 | <para>A target that should be | |
| 455 | used as synchronization point | |
| 456 | for all user/group name | |
| 457 | service lookups. Note that | |
| 458 | this is independent of | |
| 459 | host/network name lookups for | |
| 460 | which | |
| 461 | <filename>nss-lookup.target</filename> | |
| 462 | should be used. </para> | |
| 463 | </listitem> | |
| 464 | </varlistentry> | |
| bd3d19a4 LP |
465 | <varlistentry> |
| 466 | <term><filename>poweroff.target</filename></term> | |
| 467 | <listitem> | |
| 468 | <para>A special target unit | |
| 469 | for shutting down and powering off the system.</para> | |
| 470 | ||
| 471 | <para>Applications wanting to | |
| 472 | power off the system should start | |
| 473 | this unit.</para> | |
| 474 | ||
| 475 | <para><filename>runlevel0.target</filename> | |
| 476 | is an alias for this target | |
| 477 | unit, for compatibility with SysV.</para> | |
| 478 | </listitem> | |
| 479 | </varlistentry> | |
| 49dbfa7b LP |
480 | <varlistentry> |
| 481 | <term><filename>printer.target</filename></term> | |
| 482 | <listitem> | |
| 483 | <para>This target is started | |
| 484 | automatically as soon as a | |
| 485 | printer is plugged in or | |
| 486 | becomes available at | |
| 487 | boot.</para> | |
| 488 | </listitem> | |
| 489 | </varlistentry> | |
| bd3d19a4 LP |
490 | <varlistentry> |
| 491 | <term><filename>reboot.target</filename></term> | |
| 492 | <listitem> | |
| 493 | <para>A special target unit | |
| 494 | for shutting down and rebooting the system.</para> | |
| 495 | ||
| 496 | <para>Applications wanting to | |
| 497 | reboot the system should start | |
| 498 | this unit.</para> | |
| 499 | ||
| 500 | <para><filename>runlevel6.target</filename> | |
| 501 | is an alias for this target | |
| 502 | unit, for compatibility with SysV.</para> | |
| 503 | </listitem> | |
| 504 | </varlistentry> | |
| 9f235308 LP |
505 | <varlistentry> |
| 506 | <term><filename>remote-fs.target</filename></term> | |
| 507 | <listitem> | |
| bd3d19a4 LP |
508 | <para>Similar to |
| 509 | <filename>local-fs.target</filename>, | |
| 510 | but for remote mount | |
| 511 | points.</para> | |
| 512 | ||
| 9f235308 LP |
513 | <para>systemd automatically |
| 514 | adds dependencies of type | |
| bd3d19a4 LP |
515 | After for this target unit to |
| 516 | all SysV init script service | |
| 517 | units with an LSB header | |
| 518 | referring to the | |
| 1e89ced1 | 519 | <literal>$remote_fs</literal> |
| 9f235308 LP |
520 | facility.</para> |
| 521 | </listitem> | |
| 522 | </varlistentry> | |
| 21e557ed LP |
523 | <varlistentry> |
| 524 | <term><filename>remote-fs-pre.target</filename></term> | |
| 525 | <listitem> | |
| 526 | <para>This target unit is | |
| 527 | automatically ordered before | |
| 528 | all remote mount points marked | |
| 529 | with <option>auto</option> | |
| 530 | (see above). It can be used to | |
| 531 | execute certain units before | |
| 532 | all remote mounts.</para> | |
| 533 | </listitem> | |
| 534 | </varlistentry> | |
| bd3d19a4 LP |
535 | <varlistentry> |
| 536 | <term><filename>rescue.target</filename></term> | |
| 537 | <listitem> | |
| 538 | <para>A special target unit | |
| 539 | for setting up the base system | |
| 540 | and a rescue shell.</para> | |
| 541 | ||
| 542 | <para><filename>runlevel1.target</filename> | |
| 543 | is an alias for this target | |
| 544 | unit, for compatibility with SysV.</para> | |
| 545 | </listitem> | |
| 546 | </varlistentry> | |
| 9f235308 LP |
547 | <varlistentry> |
| 548 | <term><filename>rpcbind.target</filename></term> | |
| 549 | <listitem> | |
| 550 | <para>systemd automatically | |
| 551 | adds dependencies of type | |
| bd3d19a4 LP |
552 | After for this target unit to |
| 553 | all SysV init script service | |
| 554 | units with an LSB header | |
| 555 | referring to the | |
| 9f235308 LP |
556 | <literal>$rpcbind</literal> |
| 557 | facility.</para> | |
| 558 | </listitem> | |
| 559 | </varlistentry> | |
| bd3d19a4 LP |
560 | <varlistentry> |
| 561 | <term><filename>runlevel2.target</filename></term> | |
| 562 | <listitem> | |
| 563 | <para>This is a target that is | |
| 8f28cbcd | 564 | called whenever the SysV |
| bd3d19a4 LP |
565 | compatibility code asks for |
| 566 | runlevel 2. It is a good idea | |
| 567 | to make this an alias for | |
| 568 | (i.e. symlink to) | |
| 569 | <filename>multi-user.target</filename>.</para> | |
| 570 | </listitem> | |
| 571 | </varlistentry> | |
| 572 | <varlistentry> | |
| 573 | <term><filename>runlevel3.target</filename></term> | |
| 574 | <listitem> | |
| 575 | <para>This is a target that is | |
| 8f28cbcd | 576 | called whenever the SysV |
| bd3d19a4 LP |
577 | compatibility code asks for |
| 578 | runlevel 3. It is a good idea | |
| 579 | to make this an alias for | |
| 580 | (i.e. symlink to) | |
| 581 | <filename>multi-user.target</filename> | |
| 582 | or | |
| 583 | <filename>graphical.target</filename>.</para> | |
| 584 | </listitem> | |
| 585 | </varlistentry> | |
| 586 | <varlistentry> | |
| 587 | <term><filename>runlevel4.target</filename></term> | |
| 588 | <listitem> | |
| 589 | <para>This is a target that is | |
| 8f28cbcd | 590 | called whenever the SysV |
| bd3d19a4 LP |
591 | compatibility code asks for |
| 592 | runlevel 4. It is a good idea | |
| 593 | to make this an alias for | |
| 594 | (i.e. symlink to) | |
| 595 | <filename>multi-user.target</filename> | |
| 596 | or | |
| 597 | <filename>graphical.target</filename>.</para> | |
| 598 | </listitem> | |
| 599 | </varlistentry> | |
| 600 | <varlistentry> | |
| 601 | <term><filename>runlevel5.target</filename></term> | |
| 602 | <listitem> | |
| 603 | <para>This is a target that is | |
| 8f28cbcd | 604 | called whenever the SysV |
| bd3d19a4 LP |
605 | compatibility code asks for |
| 606 | runlevel 5. It is a good idea | |
| 607 | to make this an alias for | |
| 608 | (i.e. symlink to) | |
| 609 | <filename>multi-user.target</filename> | |
| 610 | or | |
| 611 | <filename>graphical.target</filename>.</para> | |
| 612 | </listitem> | |
| 613 | </varlistentry> | |
| 9f235308 LP |
614 | <varlistentry> |
| 615 | <term><filename>shutdown.target</filename></term> | |
| 616 | <listitem> | |
| 617 | <para>A special target unit | |
| 618 | that terminates the services | |
| 619 | on system shutdown.</para> | |
| 620 | ||
| 621 | <para>Services that shall be | |
| 622 | terminated on system shutdown | |
| bd3d19a4 LP |
623 | shall add Conflicts |
| 624 | dependencies to this unit for | |
| 3b6fdb5b LP |
625 | their service unit, which is |
| 626 | implicitly done when | |
| 627 | <varname>DefaultDependencies=yes</varname> | |
| 628 | is set (the default).</para> | |
| 9f235308 LP |
629 | |
| 630 | <para>systemd automatically | |
| 631 | adds dependencies of type | |
| 632 | Conflicts to this target unit | |
| bd3d19a4 LP |
633 | for all SysV init script |
| 634 | service units that shall be | |
| 635 | terminated in SysV runlevels 0 | |
| 636 | or 6.</para> | |
| 9f235308 LP |
637 | </listitem> |
| 638 | </varlistentry> | |
| 639 | <varlistentry> | |
| 640 | <term><filename>sigpwr.target</filename></term> | |
| 641 | <listitem> | |
| 642 | <para>A special target that is | |
| 643 | started when systemd receives | |
| 644 | the SIGPWR process signal, | |
| 645 | which is normally sent by the | |
| bd3d19a4 | 646 | kernel or UPS daemons when |
| 9f235308 LP |
647 | power fails.</para> |
| 648 | </listitem> | |
| 649 | </varlistentry> | |
| 6edd7d0a LP |
650 | <varlistentry> |
| 651 | <term><filename>sleep.target</filename></term> | |
| 652 | <listitem> | |
| 653 | <para>A special target unit | |
| 654 | that is pulled in by | |
| 655 | <filename>suspend.target</filename> | |
| 656 | and | |
| 657 | <filename>hibernate.target</filename> | |
| 658 | and may be used to hook units | |
| 659 | into the sleep state | |
| 660 | logic.</para> | |
| 661 | </listitem> | |
| 662 | </varlistentry> | |
| 49dbfa7b LP |
663 | <varlistentry> |
| 664 | <term><filename>smartcard.target</filename></term> | |
| 665 | <listitem> | |
| 666 | <para>This target is started | |
| 667 | automatically as soon as a | |
| 668 | smartcard controller is | |
| 669 | plugged in or becomes | |
| 670 | available at boot.</para> | |
| 671 | </listitem> | |
| 672 | </varlistentry> | |
| 9f235308 LP |
673 | <varlistentry> |
| 674 | <term><filename>sockets.target</filename></term> | |
| 675 | <listitem> | |
| 676 | <para>A special target unit | |
| 677 | that sets up all service | |
| 678 | sockets.</para> | |
| 679 | ||
| 680 | <para>Services that can be | |
| 681 | socket-activated shall add | |
| bd3d19a4 LP |
682 | Wants dependencies to this |
| 683 | unit for their socket unit | |
| 9f235308 LP |
684 | during installation.</para> |
| 685 | </listitem> | |
| 686 | </varlistentry> | |
| 49dbfa7b LP |
687 | <varlistentry> |
| 688 | <term><filename>sound.target</filename></term> | |
| 689 | <listitem> | |
| 690 | <para>This target is started | |
| 691 | automatically as soon as a | |
| 692 | sound card is plugged in or | |
| 693 | becomes available at | |
| 694 | boot.</para> | |
| 695 | </listitem> | |
| 696 | </varlistentry> | |
| 6edd7d0a LP |
697 | <varlistentry> |
| 698 | <term><filename>suspend.target</filename></term> | |
| 699 | <listitem> | |
| 700 | <para>A special target unit | |
| 701 | for suspending the | |
| 702 | system. This pulls in | |
| 703 | <filename>sleep.target</filename>.</para> | |
| 704 | </listitem> | |
| 705 | </varlistentry> | |
| 9f235308 LP |
706 | <varlistentry> |
| 707 | <term><filename>swap.target</filename></term> | |
| 708 | <listitem> | |
| 709 | <para>Similar to | |
| 710 | <filename>local-fs.target</filename>, but for swap | |
| 711 | partitions and swap | |
| 712 | files.</para> | |
| 713 | </listitem> | |
| 714 | </varlistentry> | |
| f92a18f5 LP |
715 | <varlistentry> |
| 716 | <term><filename>sysinit.target</filename></term> | |
| 717 | <listitem> | |
| 718 | <para>A special target unit | |
| 719 | covering early boot-up scripts.</para> | |
| 720 | <para>systemd automatically | |
| 721 | adds dependencies of the types | |
| 722 | Wants and After for all | |
| 723 | SysV service units configured | |
| 724 | for runlevels that are not 0 | |
| 725 | to 6 to this target unit. | |
| 726 | This covers the special | |
| 727 | boot-up runlevels some | |
| 728 | distributions have, such as S | |
| 729 | or b.</para> | |
| 730 | </listitem> | |
| 731 | </varlistentry> | |
| feb88c9f LP |
732 | <varlistentry> |
| 733 | <term><filename>syslog.socket</filename></term> | |
| 734 | <listitem> | |
| 735 | <para>The socket unit where | |
| 736 | syslog implementations should | |
| 737 | listen on. All userspace log | |
| 738 | messages will be made | |
| 99800333 LP |
739 | available on this socket. For |
| 740 | more information about syslog | |
| 741 | integration, please consult | |
| 742 | the <ulink | |
| 743 | url="http://www.freedesktop.org/wiki/Software/systemd/syslog">Syslog | |
| 744 | Interface</ulink> | |
| 745 | document.</para> | |
| feb88c9f LP |
746 | </listitem> |
| 747 | </varlistentry> | |
| 62adf224 LP |
748 | <varlistentry> |
| 749 | <term><filename>syslog.target</filename></term> | |
| 750 | <listitem> | |
| 751 | <para>systemd automatically | |
| 752 | adds dependencies of type | |
| 753 | After for this target unit to | |
| 754 | all SysV init script service | |
| 755 | units with an LSB header | |
| 756 | referring to the | |
| 757 | <literal>$syslog</literal> | |
| 758 | facility.</para> | |
| eeb7229c LP |
759 | </listitem> |
| 760 | </varlistentry> | |
| f5ccf26d LP |
761 | <varlistentry> |
| 762 | <term><filename>system-update.target</filename></term> | |
| 763 | <listitem> | |
| 764 | <para>A special target unit | |
| 765 | that is used for off-line | |
| 766 | system updates. | |
| 767 | <citerefentry><refentrytitle>systemd-system-update-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
| 768 | will redirect the boot process | |
| 769 | to this target if | |
| 770 | <filename>/system-update</filename> | |
| 771 | exists. For more information | |
| 772 | see the <ulink | |
| 773 | url="http://freedesktop.org/wiki/Software/systemd/SystemUpdates">System | |
| 774 | Updates | |
| 775 | Specification</ulink>.</para> | |
| 776 | </listitem> | |
| 777 | </varlistentry> | |
| db47cc2a JT |
778 | <varlistentry> |
| 779 | <term><filename>time-sync.target</filename></term> | |
| 780 | <listitem> | |
| 781 | <para>systemd automatically | |
| 782 | adds dependencies of type | |
| 783 | After for this target unit to | |
| 784 | all SysV init script service | |
| 785 | units with an LSB header | |
| 786 | referring to the | |
| 787 | <literal>$time</literal> | |
| 788 | facility.</para> | |
| 789 | </listitem> | |
| 790 | </varlistentry> | |
| 3b6fdb5b LP |
791 | <varlistentry> |
| 792 | <term><filename>umount.target</filename></term> | |
| 793 | <listitem> | |
| 794 | <para>A special target unit | |
| 795 | that umounts all mount and | |
| 796 | automount points on system | |
| 797 | shutdown.</para> | |
| 798 | ||
| 799 | <para>Mounts that shall be | |
| 800 | unmounted on system shutdown | |
| 801 | shall add Conflicts | |
| 802 | dependencies to this unit for | |
| 803 | their mount unit, which is | |
| 804 | implicitly done when | |
| 805 | <varname>DefaultDependencies=yes</varname> | |
| 806 | is set (the default).</para> | |
| 807 | </listitem> | |
| 808 | </varlistentry> | |
| f5ccf26d | 809 | |
| 9f235308 LP |
810 | </variablelist> |
| 811 | </refsect1> | |
| 812 | ||
| 813 | <refsect1> | |
| af2d49f7 | 814 | <title>Special User Units</title> |
| 9f235308 | 815 | |
| af2d49f7 | 816 | <para>When systemd runs as a user instance, the |
| 9f235308 LP |
817 | following special units are available, which have |
| 818 | similar definitions as their system counterparts: | |
| bd3d19a4 | 819 | <filename>default.target</filename>, |
| 9f235308 | 820 | <filename>shutdown.target</filename>, |
| feb88c9f | 821 | <filename>sockets.target</filename></para> |
| a1b256b0 LP |
822 | |
| 823 | <para>In addition the following special unit is | |
| 824 | understood only when systemd runs as service instance:</para> | |
| 825 | ||
| 826 | <variablelist> | |
| 827 | <varlistentry> | |
| 0e0320e0 | 828 | <term><filename>exit.target</filename></term> |
| a1b256b0 LP |
829 | <listitem> |
| 830 | <para>A special service unit | |
| 831 | for shutting down the | |
| af2d49f7 | 832 | user service manager.</para> |
| a1b256b0 LP |
833 | |
| 834 | <para>Applications wanting to | |
| af2d49f7 LP |
835 | terminate the user service |
| 836 | manager should start this | |
| 837 | unit. If systemd receives | |
| 838 | SIGTERM or SIGINT when running | |
| 839 | as user service daemon it will | |
| 840 | start this unit.</para> | |
| a1b256b0 LP |
841 | |
| 842 | <para>Normally, this pulls in | |
| 843 | <filename>shutdown.target</filename> | |
| 844 | which in turn should be | |
| 845 | conflicted by all units that | |
| 846 | want to be shut down on | |
| af2d49f7 | 847 | user service manager exit.</para> |
| a1b256b0 LP |
848 | </listitem> |
| 849 | </varlistentry> | |
| 850 | </variablelist> | |
| 9f235308 LP |
851 | </refsect1> |
| 852 | ||
| 853 | <refsect1> | |
| 854 | <title>See Also</title> | |
| 855 | <para> | |
| feb88c9f | 856 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, |
| 5dc50792 LP |
857 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
| 858 | <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
| 859 | <citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
| 013d8a39 LP |
860 | <citerefentry><refentrytitle>systemd.target</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
| 861 | <citerefentry><refentrytitle>bootup</refentrytitle><manvolnum>7</manvolnum></citerefentry> | |
| 9f235308 LP |
862 | </para> |
| 863 | </refsect1> | |
| 864 | ||
| 865 | </refentry> |