systemd sd_bus_set_method_call_timeout 3 sd_bus_set_method_call_timeout sd_bus_get_method_call_timeout Set or query the default D-Bus method call timeout of a bus object #include <systemd/sd-bus.h> int sd_bus_set_method_call_timeout sd_bus *bus uint64_t usec int sd_bus_get_method_call_timeout sd_bus *bus uint64_t *ret sd_bus_set_method_call_timeout() sets the default D-Bus method call timeout of bus to usec microseconds. sd_bus_get_method_call_timeout() queries the default D-Bus method call timeout of bus. If no method call timeout was set using sd_bus_set_method_call_timeout(), the timeout is read from the $SYSTEMD_BUS_TIMEOUT environment variable. If this environment variable is unset or does not contain a valid timeout, the implementation falls back to a predefined method call timeout of 25 seconds. Note that $SYSTEMD_BUS_TIMEOUT is read once and cached so callers should not rely on being able to change the default method call timeout at runtime by changing the value of $SYSTEMD_BUS_TIMEOUT. Instead, call sd_bus_set_method_call_timeout() to change the default method call timeout. On success, these functions return a non-negative integer. On failure, they return a negative errno-style error code. Returned errors may indicate the following problems: -EINVAL The parameters bus or ret are NULL. -ENOPKG Bus object bus could not be resolved. sd_bus_set_method_call_timeout() and sd_bus_get_method_call_timeout() were added in version 246. systemd1 sd-bus3 sd_bus_call3