Function signalfd_create 

pub fn signalfd_create(
    fd: i32,
    mask: u64,
    flags: u32,
) -> Result<usize, SyscallError>

Create or update a signalfd.

Arguments

• fd: -1 to create new, or existing signalfd ID to update mask.
• mask: Signal mask (bitmask of signals to monitor).
• flags: Combination of SFD_NONBLOCK, SFD_CLOEXEC.

Returns

The signalfd ID on success.