Quoting Francesco Poli (2021-03-27 16:18:26)
> As a consequence, I feel like giving the "unshare" mode of mmdebstrap a
> try.
>
> I tried again with my work-in-progress script:
>
> $ cd ~/Downloads/
> $ mmdebstrap-autopkgtest-qemu 8GiB
> I: automatically chosen mode: unshare
> I: chroot architecture amd64 is equal to the host's architecture
> I: automatically chosen format: tar
> I: using ${HOME}/Downloads/mmdebstrap.43LR3zoGLq as tempdir
> E: cannot create ${HOME}/Downloads: Permission denied; cannot create
> ${HOME}/Downloads/mmdebstrap.43LR3zoGLq: Permission denied; cannot create
> ${HOME}/Downloads/mmdebstrap.43LR3zoGLq//etc: Permission denied; cannot
> create ${HOME}/Downloads/mmdebstrap.43LR3zoGLq//etc/apt: Permission denied;
> cannot create ${HOME}/Downloads/mmdebstrap.43LR3zoGLq//etc/apt/apt.conf.d:
> Permission denied
> W: listening on child socket failed:
> I: removing tempdir ${HOME}/Downloads/mmdebstrap.43LR3zoGLq...
> E: unable to chdir() to parent directory of
> ${HOME}/Downloads/mmdebstrap.43LR3zoGLq: Permission denied
> E: remove_tree failed
>
>
> OK, this does not work at all.
> I tried to read the relevant section in the mmdebstrap(1) man page, and
> there's some recommendation about an --unshare-helper option.
>
> But to be honest, I failed to understand what I am supposed to do with
> this --unshare-helper option.
> Could you please clarify?
Quoting from the man page:
"For correct ownership information, the directory must be accessed from a
user namespace with the right subuid/subgid offset"
Which part is unclear about that?
> Please remember that my script exports TMPDIR='.', in order to avoid
> using a tightly sized /tmp partition, where several GB of data would
> definitely not fit.
I also don't understand which part of the error message above is unclear. It
tells you that you don't have permission to create the directories which means
that whatever your '${HOME}/Downloads' is (or one of its parent directories),
has permissions set such that the directory cannot be created and/or accessed.
Thanks!
cheers, josch
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