[pacman-dev] [RFC] Correct directory permissions if the extracting package is the only owner

[Allan McRae]

On 02/02/15 20:21, Allan McRae wrote:
> On 02/02/15 03:30, Doug Newgard wrote:
>> On Sun,  1 Feb 2015 21:09:56 +1000
>> Allan McRae <allan at archlinux.org> wrote:
>>
>>> Adjusting permissions of directories in their install scripts results
>>> in warnings such as the following when the package update:
>>>
>>> warning: directory ownership differs on /var/lib/postfix/
>>> filesystem: 73:0 package: 0:0
>>>
>>> If the package being installed is the only owner of the directory,
>>> update the directory's permissions to those in the package file.
>>>
>>> This also allows directory permissions for a package to be changed
>>> directly in the PKGBUILD file rather that requiring adjustment in an
>>> install scriptlet.
>>>
>>> Signed-off-by: Allan McRae <allan at archlinux.org>
>>> ---
>>>
>>> This does require searching through all installed packages filelist
>>> to see if any other directories own this file, which does create a
>>> slowdown in these error cases. Once the ability to use symbolic names
>>> for owners is added, this code path will run only if there is an
>>> acutal error or in the rare case that directory permissions are
>>> genuinely being changed.
>>>
>>> Packages can currently avoid this being run by reverting their
>>> directory permission changes in pre_upgrade().
>>>
>>> I'd like to push this to maint if people agree.  These "false"
>>> warnings are causing too many issues.
>>
>> So what can the user do if they changed it themselves and want
>> different permissions than what's in the package?
>>
> 
> The same thing as always...  Add it to NoExtract
> 

And to show that works...

NoExtract   = usr/foo/

[22:49:43] debug: usr/foo/ is in NoExtract, skipping extraction of /usr/foo/