apparmor: add an optional profile attachment string for profiles
Add the ability to take in and report a human readable profile attachment
string for profiles so that attachment specifications can be easily
inspected.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@canonical.com>
diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
index 0fdd08c..d6329aa 100644
--- a/security/apparmor/apparmorfs.c
+++ b/security/apparmor/apparmorfs.c
@@ -290,6 +290,34 @@
.release = aa_fs_seq_profile_release,
};
+static int aa_fs_seq_profattach_show(struct seq_file *seq, void *v)
+{
+ struct aa_replacedby *r = seq->private;
+ struct aa_profile *profile = aa_get_profile_rcu(&r->profile);
+ if (profile->attach)
+ seq_printf(seq, "%s\n", profile->attach);
+ else if (profile->xmatch)
+ seq_puts(seq, "<unknown>\n");
+ else
+ seq_printf(seq, "%s\n", profile->base.name);
+ aa_put_profile(profile);
+
+ return 0;
+}
+
+static int aa_fs_seq_profattach_open(struct inode *inode, struct file *file)
+{
+ return aa_fs_seq_profile_open(inode, file, aa_fs_seq_profattach_show);
+}
+
+static const struct file_operations aa_fs_profattach_fops = {
+ .owner = THIS_MODULE,
+ .open = aa_fs_seq_profattach_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = aa_fs_seq_profile_release,
+};
+
/** fns to setup dynamic per profile/namespace files **/
void __aa_fs_profile_rmdir(struct aa_profile *profile)
{
@@ -385,6 +413,12 @@
goto fail;
profile->dents[AAFS_PROF_MODE] = dent;
+ dent = create_profile_file(dir, "attach", profile,
+ &aa_fs_profattach_fops);
+ if (IS_ERR(dent))
+ goto fail;
+ profile->dents[AAFS_PROF_ATTACH] = dent;
+
list_for_each_entry(child, &profile->base.profiles, base.list) {
error = __aa_fs_profile_mkdir(child, prof_child_dir(profile));
if (error)