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    • Simon McVittie's avatar
    • Ludovico de Nittis's avatar
      Merge branch 'wip/nixos' into 'master' · f399b28e
      Ludovico de Nittis authored
      pv-runtime: Don't rewrite /nix/store/... to /run/host/nix/store/...
      
      See merge request !336
      f399b28e
    • Simon McVittie's avatar
      runtime: Adjust fallback behaviour when taking files from provider · 5bc5326a
      Simon McVittie authored
      
      Previously, we assumed that if OS files on the provider are in a
      location that is not /usr or a related directory, for example if the OS
      has /lib/ld-linux.so.2 -> /some/odd/path/i386/ld.so, then they will
      appear below the same path_in_container_ns as /usr, for example
      /run/host/some/odd/path/i386/ld.so. However, nothing sets this up for
      directories other than /usr, /lib*, /bin, /sbin and /etc, so it's
      a bad assumption.
      
      A previous commit handled /etc by redirecting it to /run/host/etc,
      /run/parent/etc or /run/gfx/etc as appropriate, so we don't need to
      worry about that here.
      
      For the rest, assume that if they appear in the container at all,
      they'll appear at a path that matches their location in the provider.
      For the common case where provider = host, which is the only one where
      we really need to support non-FHS layouts, this means that users can
      work around lack of explicit support for a particular non-FHS directory
      with something like PRESSURE_VESSEL_FILESYSTEMS_RO=/some/odd/path.
      
      In particular, if we didn't have explicit support for /nix, NixOS users
      would have been able to use that workaround to get it mounted.
      
      Signed-off-by: default avatarSimon McVittie <smcv@collabora.com>
      5bc5326a
    • Simon McVittie's avatar
      runtime: Assume /etc is visible in the provider namespace · 57c35b13
      Simon McVittie authored
      
      If the realpath() of an OS file is below /etc, each of our code paths
      ends up with it visible below /run/host/etc, /run/parent/etc or
      /run/gfx/etc, as appropriate.
      
      Signed-off-by: default avatarSimon McVittie <smcv@collabora.com>
      57c35b13
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