linux-kernel - [PATCH 8/9] apparmor: update ctime whenever the mtime changes on an inode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230609125023.399942-9-jlayton@kernel.org>
Date:   Fri,  9 Jun 2023 08:50:22 -0400
From:   Jeff Layton <jlayton@...nel.org>
To:     Christian Brauner <brauner@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Brad Warrum <bwarrum@...ux.ibm.com>,
        Ritu Agarwal <rituagar@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ian Kent <raven@...maw.net>,
        "Tigran A. Aivazian" <aivazian.tigran@...il.com>,
        Jeremy Kerr <jk@...abs.org>, Ard Biesheuvel <ardb@...nel.org>,
        Namjae Jeon <linkinjeon@...nel.org>,
        Sungjong Seo <sj1557.seo@...sung.com>,
        Bob Peterson <rpeterso@...hat.com>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        Steve French <sfrench@...ba.org>,
        Paulo Alcantara <pc@...guebit.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        Shyam Prasad N <sprasad@...rosoft.com>,
        Tom Talpey <tom@...pey.com>,
        John Johansen <john.johansen@...onical.com>,
        Paul Moore <paul@...l-moore.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Ruihan Li <lrh2000@....edu.cn>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        autofs@...r.kernel.org, linux-efi@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, cluster-devel@...hat.com,
        linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        apparmor@...ts.ubuntu.com, linux-security-module@...r.kernel.org
Subject: [PATCH 8/9] apparmor: update ctime whenever the mtime changes on an inode

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 db7a51acf9db..c06053718836 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 cf2ceec40b28..48a97c1800b9 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);
 	}
 }
 
-- 
2.40.1