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init/device.go

23 lines
364 B

package main
import (
"fmt"
"io"
"os"
)
var devices map[string]io.ReadWriteCloser
func GetDevice(name string) (io.ReadWriteCloser, error) {
if dev, ok := devices[name]; ok {
return dev, nil
}
dev, err := os.OpenFile("/dev/" + name, os.O_RDWR, 0644)
if err != nil {
return nil, fmt.Errorf("open: %w", err)
}
devices[name] = dev
return dev, nil
}