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stage1: common: mount also the host cgroup hierarchy #1437

Merged
merged 4 commits into from Sep 24, 2015
Merged

stage1: common: mount also the host cgroup hierarchy #1437

merged 4 commits into from Sep 24, 2015

Commits on Sep 24, 2015

  1. stage1: fix error capitalization

    @iaguis
    iaguis committed Sep 24, 2015
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  2. common: stage1: refactor cgroups creation 

    We'll need it for mounting the host cgroups too.
    @iaguis
    iaguis committed Sep 24, 2015
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  3. stage1: common: mount also the host cgroup hierarchy 

    To avoid problems on environments without a properly mounted cgroup
hierarchy and/or without the systemd hierarchy we also mount the host
cgroup hierarchy.

Since we're in a different mount namespace the host is not affected.
    @iaguis
    iaguis committed Sep 24, 2015
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  4. stage1: common: join a subcgroup if we're in the root one 

    systemd-nspawn doesn't allow the caller process to be in the root
cgroup. If that is the case, we create and add ourselves to a new "rkt"
subcgroup.

Distributions like Void Linux put every process in the root cgroup by
default so this allows rkt to work on them.
    @iaguis
    iaguis committed Sep 24, 2015
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