[101504] trunk/base/src/port1.0/portextract.tcl

[Sean Farley]

On Mon, Jan 14, 2013 at 11:09 AM, Blair Zajac <blair at orcaware.com> wrote:
> On 01/13/2013 06:46 PM, Ryan Schmidt wrote:
>>
>>
>> On Jan 13, 2013, at 18:53, Blair Zajac wrote:
>>
>>> On 01/13/2013 03:36 PM, Ryan Schmidt wrote:
>>>
>>>> https://trac.macports.org/ticket/21117
>>>>
>>>> I think the problem still remains when you have a non-root MacPorts
>>>> installation; that's the configuration I was using when I initially filed
>>>> the ticket, before the privilege-dropping code was added to MacPorts and
>>>> made it an issue for everyone. The way I was thinking of fixing it was to
>>>> exclude those files from copying that we don't need anyway and I think that
>>>> still might be a better way, but I didn't really know how to do that which
>>>> is why I never did anything about the ticket.
>>>
>>>
>>> If you're doing this as non-root, then presumably you have permissions
>>> yourself to mount a DMG.  Are you saying that even if you can mount it,
>>> there's files in there you cannot see?
>>
>>
>>
>> I haven't tried using a non-root MacPorts installation in awhile; it just
>> seemed to become totally impossible once the privilege-dropping branch got
>> merged in. Maybe those bugs have been fixed by now.
>>
>> But here's an example from outside of MacPorts, using the distfile for the
>> cliclick port:
>>
>>
>> $ open cliclick/2.1/cliclick.dmg
>> $ cd /Volumes/cliclick
>> $ find . -print0 | xargs -0 ls -ld
>> find: ./.Trashes: Permission denied
>> drwxr-xr-x  12 rschmidt  rschmidt    476 Sep 26 02:12 .
>> -rw-r--r--@  1 rschmidt  rschmidt  12292 Sep 26 02:14 ./.DS_Store
>> d-wx-wx-wt   2 rschmidt  rschmidt     68 Sep 26 02:15 ./.Trashes
>> drwxr-xr-x   8 rschmidt  rschmidt    272 Sep 26 02:13 ./.assets
>> -rw-r--r--   1 rschmidt  rschmidt   5639 Sep 26 02:11
>> ./.assets/AppIcon.png
>> -rw-r--r--   1 rschmidt  rschmidt     95 Sep 26 02:11 ./.assets/bar.gif
>> -rw-r--r--   1 rschmidt  rschmidt   4535 Sep 14 05:24
>> ./.assets/diskimage-background.png
>> -rw-r--r--   1 rschmidt  rschmidt     67 Sep 26 02:11 ./.assets/li.gif
>> -rw-r--r--   1 rschmidt  rschmidt   1193 Sep 26 02:11 ./.assets/logo.gif
>> -rw-r--r--   1 rschmidt  rschmidt   1301 Sep 26 02:11 ./.assets/style.css
>> drwx------   4 rschmidt  rschmidt    136 Sep 26 02:15 ./.fseventsd
>> -rw-------   1 rschmidt  rschmidt    209 Sep 26 02:15
>> ./.fseventsd/6365733132517f42
>> -rw-------   1 rschmidt  rschmidt     36 Sep 26 02:15
>> ./.fseventsd/fseventsd-uuid
>> -rw-r--r--   1 rschmidt  rschmidt    277 Sep 26 02:11 ./Contact.webloc
>> -rw-r--r--@  1 rschmidt  rschmidt   4676 Sep 26 02:11 ./Read me.html
>> -rw-r--r--   1 rschmidt  rschmidt    265 Sep 26 02:11 ./Website.webloc
>> -rwxr-xr-x   1 rschmidt  rschmidt  89216 Sep 26 02:11 ./cliclick
>>
>>
>> So .Trashes cannot be seen. One solution I thought of was to just not copy
>> anything beginning with a period. In other words, "cp * ${worksrcpath}".
>> ("*" expansion does not include items starting with ".")
>>
>> A more elaborate and more correct solution would be to actually look at
>> the permissions of each item and just not copy those we're not allowed to,
>> but doing that in a single-line command execution, such as is required by
>> the extract system, was daunting.
>
>
> Instead of tar, you can use find's -perms flag.  I haven't tried this, but
> this may work:
>
> $ find PATH -depth -perms +r -print0 | cpio -0 -p -d -m -u -v "$worksrcpath

I would agree with Jeremy's suggestion to use rsync. I think that will
be the most elegant and not involve any piping or redirection, etc.
Though, I haven't tried to formulate the command yet; I'm just
thinking out loud here.