1 files changed, 65 insertions, 0 deletions

diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index ee94fa469c29..dd7bb1f1dc99 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1482,6 +1482,32 @@ static ssize_t sel_read_avc_hash_stats(struct file *filp, char __user *buf,
 	return length;
 }
 
+static ssize_t sel_read_sidtab_hash_stats(struct file *filp, char __user *buf,
+					size_t count, loff_t *ppos)
+{
+	struct selinux_fs_info *fsi = file_inode(filp)->i_sb->s_fs_info;
+	struct selinux_state *state = fsi->state;
+	char *page;
+	ssize_t length;
+
+	page = (char *)__get_free_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+
+	length = security_sidtab_hash_stats(state, page);
+	if (length >= 0)
+		length = simple_read_from_buffer(buf, count, ppos, page,
+						length);
+	free_page((unsigned long)page);
+
+	return length;
+}
+
+static const struct file_operations sel_sidtab_hash_stats_ops = {
+	.read		= sel_read_sidtab_hash_stats,
+	.llseek		= generic_file_llseek,
+};
+
 static const struct file_operations sel_avc_cache_threshold_ops = {
 	.read		= sel_read_avc_cache_threshold,
 	.write		= sel_write_avc_cache_threshold,
@@ -1599,6 +1625,37 @@ static int sel_make_avc_files(struct dentry *dir)
 	return 0;
 }
 
+static int sel_make_ss_files(struct dentry *dir)
+{
+	struct super_block *sb = dir->d_sb;
+	struct selinux_fs_info *fsi = sb->s_fs_info;
+	int i;
+	static struct tree_descr files[] = {
+		{ "sidtab_hash_stats", &sel_sidtab_hash_stats_ops, S_IRUGO },
+	};
+
+	for (i = 0; i < ARRAY_SIZE(files); i++) {
+		struct inode *inode;
+		struct dentry *dentry;
+
+		dentry = d_alloc_name(dir, files[i].name);
+		if (!dentry)
+			return -ENOMEM;
+
+		inode = sel_make_inode(dir->d_sb, S_IFREG|files[i].mode);
+		if (!inode) {
+			dput(dentry);
+			return -ENOMEM;
+		}
+
+		inode->i_fop = files[i].ops;
+		inode->i_ino = ++fsi->last_ino;
+		d_add(dentry, inode);
+	}
+
+	return 0;
+}
+
 static ssize_t sel_read_initcon(struct file *file, char __user *buf,
 				size_t count, loff_t *ppos)
 {
@@ -1963,6 +2020,14 @@ static int sel_fill_super(struct super_block *sb, struct fs_context *fc)
 	}
 
 	ret = sel_make_avc_files(dentry);
+
+	dentry = sel_make_dir(sb->s_root, "ss", &fsi->last_ino);
+	if (IS_ERR(dentry)) {
+		ret = PTR_ERR(dentry);
+		goto err;
+	}
+
+	ret = sel_make_ss_files(dentry);
 	if (ret)
 		goto err;