assertion error: could not determine username

[Julio-Guerra]

Running infinit in a container whose user id is modified with docker-run's option --user leads to the following error:

[elle.assert] [main] assertion 'could not determine username' failed at /builds/infinit/memo/elle/src/elle/system/username.cc:36
[elle.assert] [main]   #0  0x000000007fffffff: elle::AssertError::AssertError(char const*, char const*, unsigned long) +0x507
                       #1  0x000000007fffffff: elle::_abort(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, char const*, int) +0xc2
                       #2  0x000000007fffffff: elle::system::username[abi:cxx11]() +0x246

I simply wanted to avoid the usual permission problems of files created inside a container accessed from the host (for example to create a backup).

It's easy to reproduce:

$ docker run --name infinit --detach --interactive --privileged --restart=always --user (id -u):(id -g) --volume $HOME:$HOME --workdir $HOME --env INFINIT_HOME=$HOME infinit/infinit bash
$ docker exec -it infinit bash
I have no name!@f65ef37df35c:/Users/julio$ env
HOSTNAME=f65ef37df35c
TERM=xterm
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/Users/julio
SHLVL=1
HOME=/
no_proxy=*.local, 169.254/16
INFINIT_HOME=/Users/julio
_=/usr/bin/env
I have no name!@f65ef37df35c:/Users/julio$ infinit doctor all
[elle.assert] [main] assertion 'could not determine username' failed at /builds/infinit/memo/elle/src/elle/system/username.cc:36
[elle.assert] [main]   #0  0x000000007fffffff: elle::AssertError::AssertError(char const*, char const*, unsigned long) +0x507
                       #1  0x000000007fffffff: elle::_abort(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, char const*, int) +0xc2
                       #2  0x000000007fffffff: elle::system::username[abi:cxx11]() +0x246
                       #3  0x00000000005bcd18: ???
                       #4  0x00000000004f2857: ???
                       #5  0x00000000005c0c56: ???
                       #6  0x00000000005c2379: ???
                       #7  0x00000000005c3142: ???
                       #8  0x000000007fffffff: elle::reactor::Thread::_action_wrapper(std::function<void ()> const&) +0x259
                       #9  0x000000007fffffff: ???
                       #10 0x000000007fffffff: make_fcontext +0x21
terminate called after throwing an instance of 'elle::AssertError'
  what():  assertion 'could not determine username' failed at /builds/infinit/memo/elle/src/elle/system/username.cc:36
Aborted
I have no name!@f65ef37df35c:/Users/julio$ infinit --help
[elle.assert] [main] assertion 'could not determine username' failed at /builds/infinit/memo/elle/src/elle/system/username.cc:36
[elle.assert] [main]   #0  0x000000007fffffff: elle::AssertError::AssertError(char const*, char const*, unsigned long) +0x507
                       #1  0x000000007fffffff: elle::_abort(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, char const*, int) +0xc2
                       #2  0x000000007fffffff: elle::system::username[abi:cxx11]() +0x246
                       #3  0x00000000005bcd18: ???
                       #4  0x00000000004f2857: ???
                       #5  0x00000000005c0c56: ???
                       #6  0x00000000005c2379: ???
                       #7  0x00000000005c3142: ???
                       #8  0x000000007fffffff: elle::reactor::Thread::_action_wrapper(std::function<void ()> const&) +0x259
                       #9  0x000000007fffffff: ???
                       #10 0x000000007fffffff: make_fcontext +0x21
terminate called after throwing an instance of 'elle::AssertError'
  what():  assertion 'could not determine username' failed at /builds/infinit/memo/elle/src/elle/system/username.cc:36
Aborted
I have no name!@f65ef37df35c:/Users/julio$ 

Defining the variable INFINIT_USER to try to avoid the error has no effects.

[Dimrok]

Hi @Julio-Guerra.

Thanks, I'll fix that asap.