Christian Seiler <christ...@iwakd.de> writes:
>>>> Use the remap translator instead, which is one of the things the Hurd
>>>> design allows you to do easily.
>>>>
>>>> See /bin/remap to easily set one.
>>>
>>> remap doesn't work at all here, programs then complain
>>> that they can't assign requested address when doing any
>>> socket operation.
>>
>> Seems to work fine here:
>>
>> teythoon@hurdbox ~ % cd /tmp
>> teythoon@hurdbox /tmp % settrans -ac 1 /hurd/pflocal
>> teythoon@hurdbox /tmp % remap /servers/socket/1 /tmp/1 -- /bin/bash -c 'echo
>> huhu world | wc'
>> 1 2 11
>
> For pipes yes, for named sockets (which is what open-isns
> uses): no.
>
> $ cd /tmp
> $ settrans -ac 1 /hurd/pflocal
> $ remap /servers/socket/1 /tmp/1 -- python3
> Python 3.5.2+ (default, Aug 5 2016, 08:07:14)
> [GCC 6.1.1 20160705] on gnu0
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import socket
>>>> s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
>>>> s.bind('/tmp/test.sock')
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> OSError: [Errno 1073741873] Cannot assign requested address
>
> (Same also from C programs, Python is just easier to test.)
>
> The same python code works if you run it without remap.Right, I can see how this is a problem. The thing is, remap doesn't quite do the job: 1/ it fails to remap relative paths, 2/ if one sets a translator record on a node, and that translator is then started by the filesystem, it is started "outside" of the remap environment. I belive 2/ is what happens here. fakeroot has the same problem. For me, lack of robust lightweight virtualization this is the most pressing shortcoming of the Hurd, and I did some work to address this. Aiui remap/fakeroot must prevent the filesystem from starting the translator and do it themself to make the translation more correct. > Anyway, not terribly important to me, rebooting did work fine > anyway, and I now have a working patch for open-isns that will > make it work on Hurd once my other patch against pflocal's > socket.c is merged. Cool! Cheers, Justus
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