When chase_symlinks() fails, we'd get the generic error: Failed to disable: Permission denied. Let's at least add the failure to changes list, so the user gets a slightly better message. Ideally, we'd say where exactly the permission failure occured, but chase_symlinks() is a library level function and I don't think we should add logging there. The output looks like this now: Failed to resolve symlink "/tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias2.service": Permission denied Failed to resolve symlink "/tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias.service": Permission denied Failed to disable unit, file /tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias2.service: Permission denied. Failed to disable unit, file /tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias.service: Permission denied.
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