linux-kernel - [PATCH] apparmor: take nosymfollow flag into account

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Date: Fri, 28 Jun 2024 17:37:12 +0200
From: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
To: john.johansen@...onical.com
Cc: stgraber@...raber.org,
	brauner@...nel.org,
	apparmor@...ts.ubuntu.com,
	linux-kernel@...r.kernel.org,
	Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
Subject: [PATCH] apparmor: take nosymfollow flag into account

A "nosymfollow" flag was added in commit
dab741e0e02b ("Add a "nosymfollow" mount option.")

While we don't need to implement any special logic on
the AppArmor kernel side to handle it, we should provide
user with a correct list of mount flags in audit logs.

Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
---
 security/apparmor/mount.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/security/apparmor/mount.c b/security/apparmor/mount.c
index 49fe8da6fea4..bf8863253e07 100644
--- a/security/apparmor/mount.c
+++ b/security/apparmor/mount.c
@@ -44,6 +44,8 @@ static void audit_mnt_flags(struct audit_buffer *ab, unsigned long flags)
 		audit_log_format(ab, ", mand");
 	if (flags & MS_DIRSYNC)
 		audit_log_format(ab, ", dirsync");
+	if (flags & MS_NOSYMFOLLOW)
+		audit_log_format(ab, ", nosymfollow");
 	if (flags & MS_NOATIME)
 		audit_log_format(ab, ", noatime");
 	if (flags & MS_NODIRATIME)
-- 
2.34.1