introduce new LSM hooks where vfsmount is available.
Add new LSM hooks for path-based checks. Call them on directory-modifying
operations at the points where we still know the vfsmount involved.
Signed-off-by: Kentaro Takeda <takedakn@nttdata.co.jp>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Toshiharu Harada <haradats@nttdata.co.jp>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/capability.c b/security/capability.c
index 2dce66f..c545bd1 100644
--- a/security/capability.c
+++ b/security/capability.c
@@ -263,6 +263,53 @@
*secid = 0;
}
+#ifdef CONFIG_SECURITY_PATH
+static int cap_path_mknod(struct path *dir, struct dentry *dentry, int mode,
+ unsigned int dev)
+{
+ return 0;
+}
+
+static int cap_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
+{
+ return 0;
+}
+
+static int cap_path_rmdir(struct path *dir, struct dentry *dentry)
+{
+ return 0;
+}
+
+static int cap_path_unlink(struct path *dir, struct dentry *dentry)
+{
+ return 0;
+}
+
+static int cap_path_symlink(struct path *dir, struct dentry *dentry,
+ const char *old_name)
+{
+ return 0;
+}
+
+static int cap_path_link(struct dentry *old_dentry, struct path *new_dir,
+ struct dentry *new_dentry)
+{
+ return 0;
+}
+
+static int cap_path_rename(struct path *old_path, struct dentry *old_dentry,
+ struct path *new_path, struct dentry *new_dentry)
+{
+ return 0;
+}
+
+static int cap_path_truncate(struct path *path, loff_t length,
+ unsigned int time_attrs)
+{
+ return 0;
+}
+#endif
+
static int cap_file_permission(struct file *file, int mask)
{
return 0;
@@ -883,6 +930,16 @@
set_to_cap_if_null(ops, inode_setsecurity);
set_to_cap_if_null(ops, inode_listsecurity);
set_to_cap_if_null(ops, inode_getsecid);
+#ifdef CONFIG_SECURITY_PATH
+ set_to_cap_if_null(ops, path_mknod);
+ set_to_cap_if_null(ops, path_mkdir);
+ set_to_cap_if_null(ops, path_rmdir);
+ set_to_cap_if_null(ops, path_unlink);
+ set_to_cap_if_null(ops, path_symlink);
+ set_to_cap_if_null(ops, path_link);
+ set_to_cap_if_null(ops, path_rename);
+ set_to_cap_if_null(ops, path_truncate);
+#endif
set_to_cap_if_null(ops, file_permission);
set_to_cap_if_null(ops, file_alloc_security);
set_to_cap_if_null(ops, file_free_security);
