Function nc::pidfd_send_signal

pub fn pidfd_send_signal(
    pidfd: i32, 
    sig: i32, 
    info: &mut siginfo_t, 
    flags: u32
) -> Result<(), Errno>

sys_pidfd_send_signal - Signal a process through a pidfd @pidfd: file descriptor of the process @sig: signal to send @info: signal info @flags: future flags

The syscall currently only signals via PIDTYPE_PID which covers kill(, . It does not signal threads or process groups. In order to extend the syscall to threads and process groups the @flags argument should be used. In essence, the @flags argument will determine what is signaled and not the file descriptor itself. Put in other words, grouping is a property of the flags argument not a property of the file descriptor.

Return: 0 on success, negative errno on failure