24 lines
794 B
Go
24 lines
794 B
Go
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// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
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// SPDX-License-Identifier: MIT
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//go:build freebsd || netbsd || openbsd || darwin
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package nfsfs
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import (
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"errors"
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"syscall"
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)
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// symlinkRefused reports whether an open refused a final component that is
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// a symlink, the answer O_NOFOLLOW exists for. The systems disagree on the
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// answer: FreeBSD and OpenBSD answer EMLINK, NetBSD answers EFTYPE, darwin
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// names EMLINK in its open(2), and the ELOOP spelling stays in the check
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// for the lineage it came from. FreeBSD, OpenBSD and NetBSD are verified
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// live; the darwin answer rests on its manual.
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func symlinkRefused(err error) bool {
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return errors.Is(err, syscall.ELOOP) ||
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errors.Is(err, syscall.EMLINK) ||
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errors.Is(err, syscall.EFTYPE)
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}
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