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fix(systemd): remove any existing unit when calling mask

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This commit is contained in:
Jonathan Boulle
2014-05-21 11:03:52 -07:00
parent e317c7eb9a
commit 786e4bef65
3 changed files with 34 additions and 8 deletions
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10
system/systemd.go
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@@ -179,9 +179,17 @@ func MachineID(root string) string {
return id
}
// MaskUnit masks a Unit by the given name by symlinking its unit file (in
// /etc/systemd/system) to /dev/null, analogous to `systemctl mask`
// N.B.: Unlike `systemctl mask`, this function will *remove any existing unit
// file* in /etc/systemd/system, to ensure that the mask will succeed.
func MaskUnit(unit string, root string) error {
masked := path.Join(root, "etc", "systemd", "system", unit)
if err := os.MkdirAll(path.Dir(masked), os.FileMode(0755)); err != nil {
if _, err := os.Stat(masked); os.IsNotExist(err) {
if err := os.MkdirAll(path.Dir(masked), os.FileMode(0755)); err != nil {
return err
}
} else if err := os.Remove(masked); err != nil {
return err
}
return os.Symlink("/dev/null", masked)