2020-12-01 01:06:26 +00:00
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// +build aix darwin dragonfly freebsd netbsd openbsd
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2019-01-12 04:58:27 +00:00
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package godirwalk
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import (
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"reflect"
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"syscall"
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"unsafe"
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)
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func nameFromDirent(de *syscall.Dirent) []byte {
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// Because this GOOS' syscall.Dirent provides a Namlen field that says how
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// long the name is, this function does not need to search for the NULL
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// byte.
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ml := int(de.Namlen)
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// Convert syscall.Dirent.Name, which is array of int8, to []byte, by
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// overwriting Cap, Len, and Data slice header fields to values from
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// syscall.Dirent fields. Setting the Cap, Len, and Data field values for
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// the slice header modifies what the slice header points to, and in this
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// case, the name buffer.
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var name []byte
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sh := (*reflect.SliceHeader)(unsafe.Pointer(&name))
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sh.Cap = ml
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sh.Len = ml
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sh.Data = uintptr(unsafe.Pointer(&de.Name[0]))
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return name
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}
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