Messages in this thread | | | From | Alexey Gladkov <> | Subject | [PATCH v5 0/5] proc: Relax check of mount visibility | Date | Wed, 10 Mar 2021 19:19:55 +0100 |
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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.
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.
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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
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