[lxc-devel] [lxc/lxc] d3f99e: cgfs: make sure we use valid cgroup mountpoints

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/lxc/lxc
  Commit: d3f99e96fb70732bdb11d247f457cb0771665b1b
      https://github.com/lxc/lxc/commit/d3f99e96fb70732bdb11d247f457cb0771665b1b
  Author: Serge Hallyn <serge.hallyn at ubuntu.com>
  Date:   2016-02-25 (Thu, 25 Feb 2016)

  Changed paths:
    M src/lxc/cgfs.c

  Log Message:
  -----------
  cgfs: make sure we use valid cgroup mountpoints

If lxcfs starts before cgroup-lite, then the first cgroup mountpoints in
/proc/self/mountinfo are /run/lxcfs/*.  Unprivileged users cannot access
these.  So privileged containers are ok, and unprivileged containers are ok
since they won't cache those to begin with.  But unprivileged root-owned
containers cache /run/lxcfs/* and then try to use them.

So when doing cgroup automounting check whether the mountpoints we have
stored are accessible, and if not look for a new one to use.

Signed-off-by: Serge Hallyn <serge.hallyn at ubuntu.com>


  Commit: 0eb37f98660d2b7bf26dd87162ea3749cb9f8d1c
      https://github.com/lxc/lxc/commit/0eb37f98660d2b7bf26dd87162ea3749cb9f8d1c
  Author: Stéphane Graber <stgraber at stgraber.org>
  Date:   2016-02-25 (Thu, 25 Feb 2016)

  Changed paths:
    M src/lxc/cgfs.c

  Log Message:
  -----------
  Merge pull request #850 from hallyn/2016-02-25/cgfs.lxcfs

cgfs: make sure we use valid cgroup mountpoints


Compare: https://github.com/lxc/lxc/compare/fa79f0a4e3fc...0eb37f98660d