mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
30 lines
823 B
Go
30 lines
823 B
Go
|
// +build darwin dragonfly freebsd netbsd openbsd
|
||
|
|
|
||
|
|
package godirwalk
|
||
|
|
|
||
|
|
import (
|
||
|
|
"reflect"
|
||
|
|
"syscall"
|
||
|
|
"unsafe"
|
||
|
|
)
|
||
|
|
|
||
|
|
func nameFromDirent(de *syscall.Dirent) []byte {
|
||
|
|
// Because this GOOS' syscall.Dirent provides a Namlen field that says how
|
||
|
|
// long the name is, this function does not need to search for the NULL
|
||
|
|
// byte.
|
||
|
|
ml := int(de.Namlen)
|
||
|
|
|
||
|
|
// Convert syscall.Dirent.Name, which is array of int8, to []byte, by
|
||
|
|
// overwriting Cap, Len, and Data slice header fields to values from
|
||
|
|
// syscall.Dirent fields. Setting the Cap, Len, and Data field values for
|
||
|
|
// the slice header modifies what the slice header points to, and in this
|
||
|
|
// case, the name buffer.
|
||
|
|
var name []byte
|
||
|
|
sh := (*reflect.SliceHeader)(unsafe.Pointer(&name))
|
||
|
|
sh.Cap = ml
|
||
|
|
sh.Len = ml
|
||
|
|
sh.Data = uintptr(unsafe.Pointer(&de.Name[0]))
|
||
|
|
|
||
|
|
return name
|
||
|
|
}
|