if flags&_AT_EACCESS != 0 {
		uid = Geteuid()
		if uid != 0 && isCapDacOverrideSet() {
			// If CAP_DAC_OVERRIDE is set, file access check is
			// done by the kernel in the same way as for root
			// (see generic_permission() in the Linux sources).
			uid = 0
		}
	} else {
		uid = Getuid()
	}

	if uid == 0 {
		if mode&1 == 0 {
			// Root can read and write any file.
			return nil
		}

	if flags&AT_EACCESS != 0 {
		uid = Geteuid()
		if uid != 0 && isCapDacOverrideSet() {
			// If CAP_DAC_OVERRIDE is set, file access check is
			// done by the kernel in the same way as for root
			// (see generic_permission() in the Linux sources).
			uid = 0
		}
	} else {
		uid = Getuid()
	}

	if uid == 0 {
		if mode&1 == 0 {
			// Root can read and write any file.
			return nil
		}