diff options
Diffstat (limited to 'src/systemd/sd-daemon.h')
| -rw-r--r-- | src/systemd/sd-daemon.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/systemd/sd-daemon.h b/src/systemd/sd-daemon.h index daa3f4c857..43deb8cc7d 100644 --- a/src/systemd/sd-daemon.h +++ b/src/systemd/sd-daemon.h @@ -186,6 +186,8 @@ int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t the file descriptor is a POSIX Message Queue of the specified name, 0 otherwise. If path is NULL a message queue name check is not done. Returns a negative errno style error code on failure. + + See sd_is_mq(3) for more information. */ int sd_is_mq(int fd, const char *path); @@ -220,7 +222,8 @@ int sd_is_mq(int fd, const char *path); 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. + timestamps to detect failed services. Also see + sd_watchdog_enabled() below. Daemons can choose to send additional variables. However, it is recommended to prefix variable names not listed above with X_. @@ -275,6 +278,22 @@ int sd_notifyf(int unset_environment, const char *format, ...) _sd_printf_attr_( */ int sd_booted(void); +/* + Returns > 0 if the service manager expects watchdog keep-alive + events to be sent regularly via sd_notify(0, "WATCHDOG=1"). Returns + 0 if it does not expect this. If the usec argument is non-NULL + returns the watchdog timeout in µs after which the service manager + will act on a process that has not sent a watchdog keep alive + message. This function is useful to implement services that + recognize automatically if they are being run under supervision of + systemd with WatchdogSec= set. It is recommended for clients to + generate keep-alive pings via sd_notify(0, "WATCHDOG=1") every half + of the returned time. + + See sd_watchdog_enabled(3) for more information. +*/ +int sd_watchdog_enabled(int unset_environment, uint64_t *usec); + #ifdef __cplusplus } #endif |