systemd sd_varlink_set_relative_timeout 3 sd_varlink_set_relative_timeout Set method call time-out #include <systemd/sd-varlink.h> int sd_varlink_set_relative_timeout sd_varlink *link uint64_t usec sd_varlink_set_relative_timeout() sets the relative timeout in µs to enforce on Varlink method calls. A default time-out of 45s (currently) applies, which may be changed with this call. Set to UINT64_MAX to disable the time-out, and to 0 to revert to revert back to the default time-out. The time-out begins whenever a method call is started, and if no response is received by the time the time-out elapses a synthetic io.systemd.TimedOut error is raised as client-generated reply to the method call. This call is particularly useful for method calls issued via sd_varlink_observe() that shall remain open continuously for a long time. On success, sd_varlink_set_relative_timeout() returns a non-negative integer. On failure, it returns a negative errno-style error code. Returned errors may indicate the following problems: -EINVAL An argument is invalid. sd_varlink_set_relative_timeout() was added in version 257. systemd1 sd-varlink3