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https://issues.apache.org/jira/browse/MESOS-8257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16691278#comment-16691278
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Jie Yu commented on MESOS-8257:
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commit b866fc3278dc4fd48d1a50493bcde1efdfa91cc7 (HEAD -> master, origin/master,
origin/HEAD)
Author: Jason Lai <ja...@jasonlai.net>
Date: Sun Nov 18 21:12:28 2018 -0800
Added unit tests for Stout `path::normalize` function in POSIX.
Review: https://reviews.apache.org/r/68832/
commit 516c0bd70c50ae5aa6682b3b8675ef75d99dfc3f
Author: Jason Lai <ja...@jasonlai.net>
Date: Sun Nov 18 21:12:06 2018 -0800
Added Stout `path::normalize` function for POSIX paths.
Added `path::normalize` to normalize a given pathname and remove
redundant separators and up-level references.
This function follows the rules described in `path_resolution(7)`
for Linux. However, it only performs pure lexical processing without
touching the actual filesystem.
Review: https://reviews.apache.org/r/65811/
> Unified Containerizer "leaks" a target container mount path to the host FS
> when the target resolves to an absolute path
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: MESOS-8257
> URL: https://issues.apache.org/jira/browse/MESOS-8257
> Project: Mesos
> Issue Type: Bug
> Components: containerization
> Affects Versions: 1.3.1, 1.4.1, 1.5.0
> Reporter: Jason Lai
> Assignee: Jason Lai
> Priority: Critical
> Labels: bug, containerizer, mountpath
>
> If a target path under the root FS provisioned from an image resolves to an
> absolute path, it will not appear in the container root FS after
> {{pivot_root(2)}} is called.
> A typical example is that when the target path is under {{/var/run}} (e.g.
> {{/var/run/some-dir}}), which is usually a symlink to an absolute path of
> {{/run}} in Debian images, the target path will get resolved as and created
> at {{/run/some-dir}} in the host root FS, after the container root FS gets
> provisioned. The target path will get unmounted after {{pivot_root(2)}} as it
> is part of the old root (host FS).
> A workaround is to use {{/run}} instead of {{/var/run}}, but absolute
> symlinks need to be resolved within the scope of the container root FS path.
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