[Nut-upsdev] /sbin/upsdrvctl unable to shutdown UPS due to (unmounted) shared library

[Charles Lepple]

On Aug 27, 2009, at 10:22 AM, Michal Hlavinka wrote:

>> [...]
>>
>>>> ./usbhid-ups
>>>>      libusb-0.1.so.4 => /usr/lib64/libusb-0.1.so.4  
>>>> (0x00000036fe600000)
>>>>      libssl.so.8 => /usr/lib64/libssl.so.8 (0x0000003d07000000)
>>>>      libcrypto.so.8 => /usr/lib64/libcrypto.so.8  
>>>> (0x000000379c400000)
>>>>      libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2
>>>> (0x0000003d06c00000)
>>>>      libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x0000003d06800000)
>>>>      libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3
>>>> (0x00000036f6200000) libkrb5support.so.0 =>
>>>> /usr/lib64/libkrb5support.so.0
>>>> (0x00000036f5200000)
>>>
>>> We could do better here. IIRC, the only reason why we link usbhid- 
>>> ups
>>> against OpenSSL is for calculating the hash of a HID descriptor,  
>>> and that
>>> mode does not seem to be used by default (and would never be used at
>>> shutdown). That hash calculation could be moved into a file in NUT's
>>> common directory.
>>
>> Michal,
>>
>> The code that required OpenSSL has been removed from the SVN trunk.
>>
>> I have not tested this particular patch against 2.4.1, but it should
>> apply without much effort:
>>
>> http://boxster.ghz.cc/projects/nut/changeset/1947
>
> Hi Charles,
>
> this is awesome! Now only libusb makes some trouble, but I think it  
> should be
> in /lib, so I've started negotiating about this with libusb  
> maintainer for
> rhel and fedora.

Sounds good.

> Does this means openssl was removed completely or only from usbhid- 
> ups?

None of the other drivers use OpenSSL (last I checked), so things  
should work at shutdown time (since the drivers are invoked directly).

upsd and upsc can optionally communicate over SSL, but /usr should be  
available while upsd is running.