...ll not be interrupted by a signal handler. Reads with a buffer over this limit may return less than the requested number of bytes or fail with the error EINTR , if interrupted b…...ll not be interrupted by a signal handler. Reads with a buffer over this limit may return less than the requested number of bytes or fail with the error EINTR , if interrupted b…...The pending flag is used by RTC_WKALM_RD to report a pending interrupt (so it's mostly useless on Linux, except when talking to the RTC managed by EFI firmware). The time field …