boulder/cmd/ceremony/file.go

15 lines
352 B
Go

package main
import "os"
// writeFile creates a file at the given filename and writes the provided bytes
// to it. Errors if the file already exists.
func writeFile(filename string, bytes []byte) error {
f, err := os.OpenFile(filename, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644)
if err != nil {
return err
}
_, err = f.Write(bytes)
return err
}