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moby--moby/pkg/system/umask.go

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// +build !windows
package system
import (
"golang.org/x/sys/unix"
)
// Umask sets current process's file mode creation mask to newmask
// and returns oldmask.
func Umask(newmask int) (oldmask int, err error) {
return unix.Umask(newmask), nil
}