fileutil: start working on symlink checking
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@ -3,6 +3,8 @@ package fileutil
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import (
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"os"
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"path/filepath"
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"strings"
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"golang.org/x/sys/unix"
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)
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@ -45,3 +47,10 @@ const (
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func Access(path string, mode int) error {
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return unix.Access(path, uint32(mode))
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}
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// ValidateSymlink checks to make sure a symlink exists in some top-level
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// directory.
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func ValidateSymlink(symlink, topLevel string) bool {
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target, err := filepath.EvalSymlinks(symlink)
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return strings.HasPrefix(target, topLevel)
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}
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