*/
#ifndef _sd_printf_attr_
-#if __GNUC__ >= 4
-#define _sd_printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
-#else
-#define _sd_printf_attr_(a,b)
-#endif
+# if __GNUC__ >= 4
+# define _sd_printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
+# else
+# define _sd_printf_attr_(a,b)
+# endif
#endif
/*
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);
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_.
*/
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