Re: Problem with tuntap while building mirage-www

[Amir Chaudhry <amc79@xxxxxxxxx>]

Yeah, that would make sense.  I did some more digging earlier and found out 
that I could (probably) have run `SystemStarter start tap` (or something like 
that -- apparently that utility is deprecated so it should be launchctl 
instead, I stopped digging at this point).  The installer probably does the 
right thing.

Amir 

On 10 Sep 2013, at 22:01, Anil Madhavapeddy <anil@xxxxxxxxxx> wrote:

> I believe the official installer loads the package as part of the 
> post-installation scripts, and so no reboot is required.
> 
> -anil
> 
> On 10 Sep 2013, at 16:43, Amir Chaudhry <amc79@xxxxxxxxx> wrote:
> 
>> Fixed.
>> 
>> Short answer: I rebooted (haven't had to do that in a while for an install 
>> to work, hence didn't think about it)
>> 
>> Longer answer: Getting tuntap via homebrew is fine but there's extra work in 
>> moving files to the appropriate places. This is pointed out in the Caveats 
>> and I'd already followed those instructions, namely copying and chown-ing 
>> files from Cellar into `/Library/Extensions/` and `/Library/StartupItems/` 
>> (nb: you can see the instructions I'm referring to via `brew info tuntap`)
>> 
>> Since the README in the downloadable pkg mentioned the same file locations, 
>> I guessed that a reboot was required to give the stuff in StartupItems a 
>> kick (I guessed based on the name of the folder).  That seems to have 
>> worked.  I assume installing via the pkg tells you that you need to restart.
>> 
>> Thanks,
>> Amir
>> 
>> 
>> 
>> On 10 Sep 2013, at 15:46, Anil Madhavapeddy <anil@xxxxxxxxxx> wrote:
>> 
>>> This indicates that the tuntap MacOS X kext hasn't been installed 
>>> correctly.  I dont know if the tuntap Homebrew package installs the kext, 
>>> as the homepage has an Mpkg installer which installs the kernel module for 
>>> you.
>>> 
>>> -anil
>>> 
>>> On 10 Sep 2013, at 14:53, Amir Chaudhry <amc79@xxxxxxxxx> wrote:
>>> 
>>>> Hi everyone,
>>>> 
>>>> I'm going through the Mirage install instructions to build the mirage 
>>>> website and hit a tuntap related problem.  I installed tuntap via `brew 
>>>> install tuntap` and went through some of the brew caveats (i.e a few `sudo 
>>>> cp` and `sudo chown` steps).
>>>> 
>>>> Some notes:
>>>> - My compiler switch is OCaml 4.01.0 RC2 (ie I varied from the 
>>>> instructions by doing `opam switch mirage-unix -a 4.01.0` instead)
>>>> 
>>>> - I'm trying to use the mirage network stack so I ran...
>>>> $ make clean unix-direct-build      # this seems to work fine
>>>> $ sudo make run                              # this produces the output 
>>>> below
>>>> 
>>>> … but I have the same error with unix-socket-build.  Not sure what I've 
>>>> done wrong with tuntap.  
>>>> What can I try next?  
>>>> 
>>>> ============================
>>>> 
>>>> amir$ sudo make run
>>>> cd src && sudo mirari run www.conf 
>>>> [mirari] Using specified config file www.conf
>>>> [mirari] + unix direct mode
>>>> [mirari] Creating tap0 interface.
>>>> /dev/tap0
>>>> [mirari] Ctrl-C received, killing child and exiting.
>>>> 
>>>> [mirari] Tuntap failed with error No such file or directory. Remember that 
>>>> mirari has to be run as root have the CAP_NET_ADMIN capability in order to 
>>>> be able to run unikernels for the UNIX backendmirari: internal error, 
>>>> uncaught exception:
>>>>     Failure("No such file or directory")
>>>> 
>>>> make: *** [run] Error 1
>>>> amir$ 
>>>> 
>>>> ============================
>>>> 
>>>> 
>>>> Amir
>>> 
>> 
>> 
>