mirror of
https://github.com/safing/portbase
synced 2025-09-01 10:09:50 +00:00
26 lines
529 B
Go
26 lines
529 B
Go
package renameio
|
|
|
|
import "os"
|
|
|
|
// WriteFile mirrors os.WriteFile, replacing an existing file with the same
|
|
// name atomically.
|
|
func WriteFile(filename string, data []byte, perm os.FileMode) error {
|
|
t, err := TempFile("", filename)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer func() {
|
|
_ = t.Cleanup()
|
|
}()
|
|
|
|
// Set permissions before writing data, in case the data is sensitive.
|
|
if err := t.Chmod(perm); err != nil {
|
|
return err
|
|
}
|
|
|
|
if _, err := t.Write(data); err != nil {
|
|
return err
|
|
}
|
|
|
|
return t.CloseAtomicallyReplace()
|
|
}
|