79 static const char *ovl_uuid_mode(struct ovl_config *config)  in ovl_uuid_mode()  argument
81 	return ovl_parameter_uuid[config->uuid].name;  in ovl_uuid_mode()
96 const char *ovl_xino_mode(struct ovl_config *config)  in ovl_xino_mode()  argument
98 	return ovl_parameter_xino[config->xino].name;  in ovl_xino_mode()
114 static const char *ovl_redirect_mode(struct ovl_config *config)  in ovl_redirect_mode()  argument
116 	return ovl_parameter_redirect_dir[config->redirect_mode].name;  in ovl_redirect_mode()
133 static const char *ovl_verity_mode(struct ovl_config *config)  in ovl_verity_mode()  argument
135 	return ovl_parameter_verity[config->verity_mode].name;  in ovl_verity_mode()
342 	struct ovl_config *config = &ofs->config;  in ovl_add_layer()  local
348 		swap(config->workdir, *pname);  in ovl_add_layer()
352 		swap(config->upperdir, *pname);  in ovl_add_layer()
591 	struct ovl_config *config = &ofs->config;  in ovl_parse_param()  local
629 		config->default_permissions = true;  in ovl_parse_param()
632 		config->redirect_mode = result.uint_32;  in ovl_parse_param()
633 		if (config->redirect_mode == OVL_REDIRECT_OFF) {  in ovl_parse_param()
634 			config->redirect_mode = ovl_redirect_always_follow ?  in ovl_parse_param()
641 		config->index = result.uint_32;  in ovl_parse_param()
645 		config->uuid = result.uint_32;  in ovl_parse_param()
648 		config->nfs_export = result.uint_32;  in ovl_parse_param()
652 		config->xino = result.uint_32;  in ovl_parse_param()
655 		config->metacopy = result.uint_32;  in ovl_parse_param()
659 		config->verity_mode = result.uint_32;  in ovl_parse_param()
662 		config->ovl_volatile = true;  in ovl_parse_param()
665 		config->userxattr = true;  in ovl_parse_param()
790 	ofs->config.redirect_mode	= ovl_redirect_mode_def();  in ovl_init_fs_context()
791 	ofs->config.index		= ovl_index_def;  in ovl_init_fs_context()
792 	ofs->config.uuid		= ovl_uuid_def();  in ovl_init_fs_context()
793 	ofs->config.nfs_export		= ovl_nfs_export_def;  in ovl_init_fs_context()
794 	ofs->config.xino		= ovl_xino_def();  in ovl_init_fs_context()
795 	ofs->config.metacopy		= ovl_metacopy_def;  in ovl_init_fs_context()
824 	mounts = (struct vfsmount **) ofs->config.lowerdirs;  in ovl_free_fs()
827 		kfree(ofs->config.lowerdirs[i]);  in ovl_free_fs()
836 	kfree(ofs->config.lowerdirs);  in ovl_free_fs()
837 	kfree(ofs->config.upperdir);  in ovl_free_fs()
838 	kfree(ofs->config.workdir);  in ovl_free_fs()
845 			 struct ovl_config *config)  in ovl_fs_params_verify()  argument
850 	if (!config->upperdir) {  in ovl_fs_params_verify()
851 		if (config->workdir) {  in ovl_fs_params_verify()
853 				config->workdir);  in ovl_fs_params_verify()
854 			kfree(config->workdir);  in ovl_fs_params_verify()
855 			config->workdir = NULL;  in ovl_fs_params_verify()
857 		if (config->index && set.index) {  in ovl_fs_params_verify()
861 		config->index = false;  in ovl_fs_params_verify()
864 	if (!config->upperdir && config->ovl_volatile) {  in ovl_fs_params_verify()
866 		config->ovl_volatile = false;  in ovl_fs_params_verify()
869 	if (!config->upperdir && config->uuid == OVL_UUID_ON) {  in ovl_fs_params_verify()
871 		config->uuid = OVL_UUID_NULL;  in ovl_fs_params_verify()
875 	if (config->verity_mode && !config->metacopy) {  in ovl_fs_params_verify()
879 			       ovl_verity_mode(config));  in ovl_fs_params_verify()
883 		config->metacopy = true;  in ovl_fs_params_verify()
890 	if (!config->upperdir && config->redirect_mode == OVL_REDIRECT_FOLLOW)  in ovl_fs_params_verify()
891 		config->redirect_mode = OVL_REDIRECT_ON;  in ovl_fs_params_verify()
894 	if (config->metacopy && config->redirect_mode != OVL_REDIRECT_ON) {  in ovl_fs_params_verify()
897 			       ovl_redirect_mode(config));  in ovl_fs_params_verify()
900 		if (config->verity_mode && set.redirect) {  in ovl_fs_params_verify()
902 			       ovl_verity_mode(config), ovl_redirect_mode(config));  in ovl_fs_params_verify()
911 				ovl_redirect_mode(config));  in ovl_fs_params_verify()
912 			config->metacopy = false;  in ovl_fs_params_verify()
915 			config->redirect_mode = OVL_REDIRECT_ON;  in ovl_fs_params_verify()
920 	if (config->nfs_export && !config->index) {  in ovl_fs_params_verify()
921 		if (!config->upperdir &&  in ovl_fs_params_verify()
922 		    config->redirect_mode != OVL_REDIRECT_NOFOLLOW) {  in ovl_fs_params_verify()
924 			config->nfs_export = false;  in ovl_fs_params_verify()
934 			config->nfs_export = false;  in ovl_fs_params_verify()
937 			config->index = true;  in ovl_fs_params_verify()
942 	if (config->nfs_export && config->metacopy) {  in ovl_fs_params_verify()
953 			config->nfs_export = false;  in ovl_fs_params_verify()
954 		} else if (config->verity_mode) {  in ovl_fs_params_verify()
960 				ovl_verity_mode(config));  in ovl_fs_params_verify()
961 			config->nfs_export = false;  in ovl_fs_params_verify()
968 			config->metacopy = false;  in ovl_fs_params_verify()
974 	if (config->userxattr) {  in ovl_fs_params_verify()
976 		    config->redirect_mode != OVL_REDIRECT_NOFOLLOW) {  in ovl_fs_params_verify()
978 			       ovl_redirect_mode(config));  in ovl_fs_params_verify()
981 		if (config->metacopy && set.metacopy) {  in ovl_fs_params_verify()
985 		if (config->verity_mode) {  in ovl_fs_params_verify()
987 			       ovl_verity_mode(config));  in ovl_fs_params_verify()
996 		config->redirect_mode = OVL_REDIRECT_NOFOLLOW;  in ovl_fs_params_verify()
997 		config->metacopy = false;  in ovl_fs_params_verify()
1004 	if (!config->userxattr && !capable(CAP_SYS_ADMIN)) {  in ovl_fs_params_verify()
1006 		    config->redirect_mode != OVL_REDIRECT_NOFOLLOW) {  in ovl_fs_params_verify()
1010 		if (config->metacopy && set.metacopy) {  in ovl_fs_params_verify()
1014 		if (config->verity_mode) {  in ovl_fs_params_verify()
1028 	if (ctx->nr_data > 0 && !config->metacopy) {  in ovl_fs_params_verify()
1049 	char **lowerdirs = ofs->config.lowerdirs;  in ovl_show_options()
1071 	if (ofs->config.upperdir) {  in ovl_show_options()
1072 		seq_show_option(m, "upperdir", ofs->config.upperdir);  in ovl_show_options()
1073 		seq_show_option(m, "workdir", ofs->config.workdir);  in ovl_show_options()
1075 	if (ofs->config.default_permissions)  in ovl_show_options()
1077 	if (ofs->config.redirect_mode != ovl_redirect_mode_def())  in ovl_show_options()
1079 			   ovl_redirect_mode(&ofs->config));  in ovl_show_options()
1080 	if (ofs->config.index != ovl_index_def)  in ovl_show_options()
1081 		seq_printf(m, ",index=%s", ofs->config.index ? "on" : "off");  in ovl_show_options()
1082 	if (ofs->config.uuid != ovl_uuid_def())  in ovl_show_options()
1083 		seq_printf(m, ",uuid=%s", ovl_uuid_mode(&ofs->config));  in ovl_show_options()
1084 	if (ofs->config.nfs_export != ovl_nfs_export_def)  in ovl_show_options()
1085 		seq_printf(m, ",nfs_export=%s", ofs->config.nfs_export ?  in ovl_show_options()
1087 	if (ofs->config.xino != ovl_xino_def() && !ovl_same_fs(ofs))  in ovl_show_options()
1088 		seq_printf(m, ",xino=%s", ovl_xino_mode(&ofs->config));  in ovl_show_options()
1089 	if (ofs->config.metacopy != ovl_metacopy_def)  in ovl_show_options()
1091 			   ofs->config.metacopy ? "on" : "off");  in ovl_show_options()
1092 	if (ofs->config.ovl_volatile)  in ovl_show_options()
1094 	if (ofs->config.userxattr)  in ovl_show_options()
1096 	if (ofs->config.verity_mode != ovl_verity_mode_def())  in ovl_show_options()
1098 			   ovl_verity_mode(&ofs->config));  in ovl_show_options()