linux-kernel - [PATCH v2 05/92] apparmor: update ctime whenever the mtime changes on an inode

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Message-ID: <20230705190309.579783-5-jlayton@kernel.org>
Date:   Wed,  5 Jul 2023 15:00:32 -0400
From:   Jeff Layton <jlayton@...nel.org>
To:     Christian Brauner <brauner@...nel.org>,
        John Johansen <john.johansen@...onical.com>,
        Paul Moore <paul@...l-moore.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>
Cc:     Al Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        apparmor@...ts.ubuntu.com, linux-security-module@...r.kernel.org
Subject: [PATCH v2 05/92] apparmor: update ctime whenever the mtime changes on an inode

In general, when updating the mtime on an inode, one must also update
the ctime. Add the missing ctime updates.

Acked-by: John Johansen <john.johansen@...onical.com>
Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 security/apparmor/apparmorfs.c    |  7 +++++--
 security/apparmor/policy_unpack.c | 11 +++++++----
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
index 8e634fde35a5..3d0d370d6ffd 100644
--- a/security/apparmor/apparmorfs.c
+++ b/security/apparmor/apparmorfs.c
@@ -1554,8 +1554,11 @@ void __aafs_profile_migrate_dents(struct aa_profile *old,
 
 	for (i = 0; i < AAFS_PROF_SIZEOF; i++) {
 		new->dents[i] = old->dents[i];
-		if (new->dents[i])
-			new->dents[i]->d_inode->i_mtime = current_time(new->dents[i]->d_inode);
+		if (new->dents[i]) {
+			struct inode *inode = d_inode(new->dents[i]);
+
+			inode->i_mtime = inode->i_ctime = current_time(inode);
+		}
 		old->dents[i] = NULL;
 	}
 }
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index 694fb7a09962..ed180722a833 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -86,10 +86,13 @@ void __aa_loaddata_update(struct aa_loaddata *data, long revision)
 
 	data->revision = revision;
 	if ((data->dents[AAFS_LOADDATA_REVISION])) {
-		d_inode(data->dents[AAFS_LOADDATA_DIR])->i_mtime =
-			current_time(d_inode(data->dents[AAFS_LOADDATA_DIR]));
-		d_inode(data->dents[AAFS_LOADDATA_REVISION])->i_mtime =
-			current_time(d_inode(data->dents[AAFS_LOADDATA_REVISION]));
+		struct inode *inode;
+
+		inode = d_inode(data->dents[AAFS_LOADDATA_DIR]);
+		inode->i_mtime = inode->i_ctime = current_time(inode);
+
+		inode = d_inode(data->dents[AAFS_LOADDATA_REVISION]);
+		inode->i_mtime = inode->i_ctime = current_time(inode);
 	}
 }
 
-- 
2.41.0