lkml.org 
[lkml]   [2021]   [Mar]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v5 0/5] proc: Relax check of mount visibility
On Wed, Mar 10, 2021 at 07:19:55PM +0100, Alexey Gladkov wrote:
> If only the dynamic part of procfs is mounted (subset=pid), then there is no
> need to check if procfs is fully visible to the user in the new user namespace.

I'm sorry about that unfinished patch set. Please ignore it.

> Changelog
> ---------
> v4:
> * Set SB_I_DYNAMIC only if pidonly is set.
> * Add an error message if subset=pid is canceled during remount.
>
> v3:
> * Add 'const' to struct cred *mounter_cred (fix kernel test robot warning).
>
> v2:
> * cache the mounters credentials and make access to the net directories
> contingent of the permissions of the mounter of procfs.
>
> --
>
> Alexey Gladkov (5):
> docs: proc: add documentation about mount restrictions
> proc: Show /proc/self/net only for CAP_NET_ADMIN
> proc: Disable cancellation of subset=pid option
> proc: Relax check of mount visibility
> docs: proc: add documentation about relaxing visibility restrictions
>
> Documentation/filesystems/proc.rst | 18 ++++++++++++++++++
> fs/namespace.c | 27 ++++++++++++++++-----------
> fs/proc/proc_net.c | 8 ++++++++
> fs/proc/root.c | 25 +++++++++++++++++++------
> include/linux/fs.h | 1 +
> include/linux/proc_fs.h | 1 +
> 6 files changed, 63 insertions(+), 17 deletions(-)
>
> --
> 2.29.2
>

--
Rgrds, legion

\
 
 \ /
  Last update: 2021-03-10 21:08    [W:0.045 / U:0.684 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site