linux-kernel - [PATCH v3 1/2] audit: document /proc/PID/loginuid

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Message-Id: <14139c54992a4b50448fbbf07ebbfed743e09f3a.1616095045.git.rgb@redhat.com>
Date:   Thu, 18 Mar 2021 15:19:10 -0400
From:   Richard Guy Briggs <rgb@...hat.com>
To:     Linux-Audit Mailing List <linux-audit@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     Eric Paris <eparis@...isplace.org>,
        Paul Moore <paul@...l-moore.com>,
        Richard Guy Briggs <rgb@...hat.com>
Subject: [PATCH v3 1/2] audit: document /proc/PID/loginuid

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@...hat.com>
---
 Documentation/ABI/stable/procfs-audit_loginuid | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 Documentation/ABI/stable/procfs-audit_loginuid

diff --git a/Documentation/ABI/stable/procfs-audit_loginuid b/Documentation/ABI/stable/procfs-audit_loginuid
new file mode 100644
index 000000000000..e7c100b9ab18
--- /dev/null
+++ b/Documentation/ABI/stable/procfs-audit_loginuid
@@ -0,0 +1,15 @@
+What:		Audit Login UID
+Date:		2005-02-01
+KernelVersion:	2.6.11-rc2 1e2d1492e178 ("[PATCH] audit: handle loginuid through proc")
+Contact:	linux-audit@...hat.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.
+
-- 
2.27.0