IsError

Tests whether a raw syscall result encodes a Linux error.

Module: Linux

Signature

func IsError(result: int64) -> bool;

Parameters

Name	Type	Description
result	int64	Raw syscall return value.

Returns

bool — true when result is in the Linux error range -4095 through -1; otherwise false.

Example

import Linux::{ Errno, IsError, Read, Stdin };

let result = Read(Stdin, buffer, capacity);
if IsError(result) {
    let errorNumber = Errno(result);
}

See also

• Errno — convert an error result to positive errno
• Syscall0–Syscall6 — raw syscall entry points