TOMOYO: Add rest of file operation restrictions.
LSM hooks for chmod()/chown()/chroot() are now ready.
This patch utilizes these hooks.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/tomoyo/tomoyo.c b/security/tomoyo/tomoyo.c
index 9548a09..3fb5f6e 100644
--- a/security/tomoyo/tomoyo.c
+++ b/security/tomoyo/tomoyo.c
@@ -271,6 +271,60 @@
return tomoyo_check_open_permission(tomoyo_domain(), &f->f_path, flags);
}
+static int tomoyo_file_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ return tomoyo_check_1path_perm(tomoyo_domain(), TOMOYO_TYPE_IOCTL_ACL,
+ &file->f_path);
+}
+
+static int tomoyo_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
+ mode_t mode)
+{
+ struct path path = { mnt, dentry };
+ return tomoyo_check_1path_perm(tomoyo_domain(), TOMOYO_TYPE_CHMOD_ACL,
+ &path);
+}
+
+static int tomoyo_path_chown(struct path *path, uid_t uid, gid_t gid)
+{
+ int error = 0;
+ if (uid != (uid_t) -1)
+ error = tomoyo_check_1path_perm(tomoyo_domain(),
+ TOMOYO_TYPE_CHOWN_ACL, path);
+ if (!error && gid != (gid_t) -1)
+ error = tomoyo_check_1path_perm(tomoyo_domain(),
+ TOMOYO_TYPE_CHGRP_ACL, path);
+ return error;
+}
+
+static int tomoyo_path_chroot(struct path *path)
+{
+ return tomoyo_check_1path_perm(tomoyo_domain(), TOMOYO_TYPE_CHROOT_ACL,
+ path);
+}
+
+static int tomoyo_sb_mount(char *dev_name, struct path *path,
+ char *type, unsigned long flags, void *data)
+{
+ return tomoyo_check_1path_perm(tomoyo_domain(), TOMOYO_TYPE_MOUNT_ACL,
+ path);
+}
+
+static int tomoyo_sb_umount(struct vfsmount *mnt, int flags)
+{
+ struct path path = { mnt, mnt->mnt_root };
+ return tomoyo_check_1path_perm(tomoyo_domain(), TOMOYO_TYPE_UMOUNT_ACL,
+ &path);
+}
+
+static int tomoyo_sb_pivotroot(struct path *old_path, struct path *new_path)
+{
+ return tomoyo_check_2path_perm(tomoyo_domain(),
+ TOMOYO_TYPE_PIVOT_ROOT_ACL,
+ new_path, old_path);
+}
+
/*
* tomoyo_security_ops is a "struct security_operations" which is used for
* registering TOMOYO.
@@ -295,6 +349,13 @@
.path_mknod = tomoyo_path_mknod,
.path_link = tomoyo_path_link,
.path_rename = tomoyo_path_rename,
+ .file_ioctl = tomoyo_file_ioctl,
+ .path_chmod = tomoyo_path_chmod,
+ .path_chown = tomoyo_path_chown,
+ .path_chroot = tomoyo_path_chroot,
+ .sb_mount = tomoyo_sb_mount,
+ .sb_umount = tomoyo_sb_umount,
+ .sb_pivotroot = tomoyo_sb_pivotroot,
};
static int __init tomoyo_init(void)