unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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apparmor: update ctime whenever the mtime changes on an inode

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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@canonical.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Message-Id: <20230705190309.579783-5-jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jeff Layton 2023-07-05 15:00:32 -04:00 committed by Christian Brauner
parent fb91816e40
commit 46fc6b35a6
2 changed files with 12 additions and 6 deletions
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7
security/apparmor/apparmorfs.c
View file

@ -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;
}
}

11
security/apparmor/policy_unpack.c
View file

@ -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);
}
}