C写调用和Go syscall.Write之间的区别

writeerrnoerrnowritesyscall.Writeerrerrnowrite

writeerrno

Thus, the following cases seem unclear:

errnowritewriteerrnoerrnowrite

writesyscall.Write

writewrite()

writewrittenerr

func writeAll(fd int, buffer []byte) bool {
    length := len(buffer)
    for length > 0 {
        written, err := syscall.Write(fd, buffer)
        if err != nil { // here
            return false
        }
        length -= written
        buffer = buffer[written:]
    }
    return true
}

Is there any wrong in my suspicion?