[v2] Allow to change ipc/mq sysctls inside ipc namespace

[PATCH v2 0/3] Allow to change ipc/mq sysctls inside ipc namespace

Alexey Gladkov posted 3 patches 3 years, 6 months ago

Diff against v3 v3
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Documentation/admin-guide/sysctl/kernel.rst | 14 ++++++--
ipc/ipc_sysctl.c                            | 34 ++++++++++++++++--
ipc/mq_sysctl.c                             | 38 +++++++++++++++++++++
3 files changed, 80 insertions(+), 6 deletions(-)

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[PATCH v2 0/3] Allow to change ipc/mq sysctls inside ipc namespace

Posted by Alexey Gladkov 3 years, 6 months ago

Right now ipc and mq limits count as per ipc namespace, but only real
root can change them. By default, the current values of these limits are
such that it can only be reduced. Since only root can change the values,
it is impossible to reduce these limits in the rootless container.

We can allow limit changes within ipc namespace because mq parameters
are limited by RLIMIT_MSGQUEUE and ipc parameters are not limited to
anything other than cgroups.

--

Alexey Gladkov (3):
  sysctl: Allow change system v ipc sysctls inside ipc namespace
  sysctl: Allow to change limits for posix messages queues
  docs: Add information about ipc sysctls limitations

 Documentation/admin-guide/sysctl/kernel.rst | 14 ++++++--
 ipc/ipc_sysctl.c                            | 34 ++++++++++++++++--
 ipc/mq_sysctl.c                             | 38 +++++++++++++++++++++
 3 files changed, 80 insertions(+), 6 deletions(-)

-- 
2.33.4