slsm: fix build with 4.7

security/slsm/lsm.c

@@ -298,7 +298,7 @@ static int passt_file_open(struct file *file, const struct cred *cred) {
 	return passt_path_common(&file->f_path, cred, perms_want);
 }
 
-static int passt_path_link(struct dentry *old_dentry, struct path *new_dir,
+static int passt_path_link(struct dentry *old_dentry, const struct path *new_dir,
 			      struct dentry *new_dentry) {
 	const struct cred *cred = current_cred();
 	const struct passt_task *pt = cred->security;
@@ -336,44 +336,44 @@ cleanup:
 	return ret;
 }
 
-static int passt_path_symlink(struct path *dir, struct dentry *dentry,
+static int passt_path_symlink(const struct path *dir, struct dentry *dentry,
 				const char *old_name) {
 	/* Symlinks are always followed so there's no need to verify the
 	 * target here. */
 	return passt_path_common(dir, current_cred(), SLSM_PERMS_W);
 }
 
-static int passt_path_unlink(struct path *dir, struct dentry *dentry) {
+static int passt_path_unlink(const struct path *dir, struct dentry *dentry) {
 	return passt_path_common(dir, current_cred(), SLSM_PERMS_W);
 }
 
-static int passt_path_rename(struct path *old_dir, struct dentry *old_dentry,
-				struct path *new_dir, struct dentry *new_dentry) {
+static int passt_path_rename(const struct path *old_dir, struct dentry *old_dentry,
+				const struct path *new_dir, struct dentry *new_dentry) {
 	if (passt_path_common(old_dir, current_cred(), SLSM_PERMS_W) ||
 		passt_path_common(new_dir, current_cred(), SLSM_PERMS_W))
 		return -EACCES;
 	return 0;
 }
 
-static int passt_path_mkdir(struct path *dir, struct dentry *dentry,
+static int passt_path_mkdir(const struct path *dir, struct dentry *dentry,
 			       umode_t mode) {
 	return passt_path_common(dir, current_cred(), SLSM_PERMS_W);
 }
 
-static int passt_path_rmdir(struct path *dir, struct dentry *dentry) {
+static int passt_path_rmdir(const struct path *dir, struct dentry *dentry) {
 	return passt_path_common(dir, current_cred(), SLSM_PERMS_W);
 }
 
-static int passt_path_mknod(struct path *dir, struct dentry *dentry,
+static int passt_path_mknod(const struct path *dir, struct dentry *dentry,
 			       umode_t mode, unsigned int dev) {
 	return passt_path_common(dir, current_cred(), SLSM_PERMS_W);
 }
 
-static int passt_path_chmod(struct path *path, umode_t mode) {
+static int passt_path_chmod(const struct path *path, umode_t mode) {
 	return passt_path_common(path, current_cred(), SLSM_PERMS_W);
 }
 
-static int passt_path_chown(struct path *path, kuid_t uid, kgid_t gid) {
+static int passt_path_chown(const struct path *path, kuid_t uid, kgid_t gid) {
 	return passt_path_common(path, current_cred(), SLSM_PERMS_W);
 }