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audit: document /proc/PID/loginuid

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Describe the /proc/PID/loginuid interface in Documentation/ABI/stable that
was added 2005-02-01 by commit 1e2d1492e178 ("[PATCH] audit: handle
loginuid through proc")

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Richard Guy Briggs 2021-03-18 15:19:10 -04:00 committed by Paul Moore
parent c432237550
commit 1dd34cfcfd
1 changed files with 15 additions and 0 deletions
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What: Audit Login UID
Date: 2005-02-01
KernelVersion: 2.6.11-rc2 1e2d1492e178 ("[PATCH] audit: handle loginuid through proc")
Contact: linux-audit@redhat.com
Format: %u
Users: audit and login applications
Description:
The /proc/$pid/loginuid pseudofile is written to set and
read to get the audit login UID of process $pid. If it is
unset, permissions are not needed to set it. The accessor must
have CAP_AUDIT_CONTROL in the initial user namespace to write
it if it has been set. It cannot be written again if
AUDIT_FEATURE_LOGINUID_IMMUTABLE is enabled. It cannot be
unset if AUDIT_FEATURE_ONLY_UNSET_LOGINUID is enabled.