linuxbashdacbubblewrap

Use different group in bubblewrap

my user belongs to some groups:

$ id
uid=1000(user) gid=1000(user) groups=1000(user),1003(shared)

Now I have a program running in bwrap/bubblewrap. I can tell the program to create files as a specified group, but in bubblewrap all groups are truncated:

$ bwrap --ro-bind / / id
uid=1000(user) gid=1000(user) groups=1000(user),65534(nobody)

For me, it would be ok if the program in bwrap has a group I can specify, e.g. bwrap --gid 1003, but this also creates files as group 1000.

Is there anything I can do to change the main group to another group I belong to? (Probably before the bwrap call)

Solution

  • The newgrp command can be used to get a shell, in scripts sg can be used.

    (Thank you to Cyrus)