diff options
Diffstat (limited to 'src/systemd/sd-daemon.h')
| -rw-r--r-- | src/systemd/sd-daemon.h | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/src/systemd/sd-daemon.h b/src/systemd/sd-daemon.h index 9d3842f34..7d4cbf70d 100644 --- a/src/systemd/sd-daemon.h +++ b/src/systemd/sd-daemon.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ #ifndef foosddaemonhfoo #define foosddaemonhfoo @@ -176,12 +177,22 @@ int sd_is_mq(int fd, const char *path); newline separated environment-style variable assignments in a string. The following variables are known: - READY=1 Tells systemd that daemon startup is finished (only - relevant for services of Type=notify). The passed - argument is a boolean "1" or "0". Since there is - little value in signaling non-readiness the only + MAINPID=... The main PID of a daemon, in case elogind did not + fork off the process itself. Example: "MAINPID=4711" + + READY=1 Tells elogind that daemon startup or daemon reload + is finished (only relevant for services of Type=notify). + The passed argument is a boolean "1" or "0". Since there + is little value in signaling non-readiness the only value daemons should send is "READY=1". + RELOADING=1 Tell elogind that the daemon began reloading its + configuration. When the configuration has been + reloaded completely, READY=1 should be sent to inform + elogind about this. + + STOPPING=1 Tells elogind that the daemon is about to go down. + STATUS=... Passes a single-line status string back to systemd that describes the daemon state. This is free-form and can be used for various purposes: general state @@ -196,25 +207,31 @@ int sd_is_mq(int fd, const char *path); BUSERROR=... If a daemon fails, the D-Bus error-style error code. Example: "BUSERROR=org.freedesktop.DBus.Error.TimedOut" - MAINPID=... The main pid of a daemon, in case systemd did not - fork off the process itself. Example: "MAINPID=4711" - WATCHDOG=1 Tells systemd to update the watchdog timestamp. Services using this feature should do this in regular intervals. A watchdog framework can use the timestamps to detect failed services. Also see sd_watchdog_enabled() below. + WATCHDOG_USEC=... + Reset watchdog_usec value during runtime. + To reset watchdog_usec value, start the service again. + Example: "WATCHDOG_USEC=20000000" + FDSTORE=1 Store the file descriptors passed along with the message in the per-service file descriptor store, and pass them to the main process again on next invocation. This variable is only supported with sd_pid_notify_with_fds(). - WATCHDOG_USEC=... - Reset watchdog_usec value during runtime. - To reset watchdog_usec value, start the service again. - Example: "WATCHDOG_USEC=20000000" + FDSTOREREMOVE=1 + Remove one or more file descriptors from the file + descriptor store, identified by the name specified + in FDNAME=, see below. + + FDNAME= A name to assign to new file descriptors stored in the + file descriptor store, or the name of the file descriptors + to remove in case of FDSTOREREMOVE=1. Daemons can choose to send additional variables. However, it is recommended to prefix variable names not listed above with X_. |