fs/overlayfs/params.c

42 module_param_named(metacopy, ovl_metacopy_def, bool, 0644);
43 MODULE_PARM_DESC(metacopy,
156 	fsparam_enum("metacopy",            Opt_metacopy, ovl_parameter_bool),
653 		config->metacopy = result.uint_32;
654 		ctx->set.metacopy = true;
793 	ofs->config.metacopy		= ovl_metacopy_def;
881 	/* metacopy -> redirect_dir dependency */
882 	if (config->metacopy && config->redirect_mode != OVL_REDIRECT_ON) {
883 		if (set.metacopy && set.redirect) {
884 			pr_err("conflicting options: metacopy=on,redirect_dir=%s\n",
893 			pr_info("disabling metacopy due to redirect_dir=%s\n",
895 			config->metacopy = false;
924 	/* Resolve nfs_export -> !metacopy && !verity dependency */
925 	if (config->nfs_export && config->metacopy) {
926 		if (set.nfs_export && set.metacopy) {
927 			pr_err("conflicting options: nfs_export=on,metacopy=on\n");
930 		if (set.metacopy) {
932 			 * There was an explicit metacopy=on that resulted
935 			pr_info("disabling nfs_export due to metacopy=on\n");
950 			pr_info("disabling metacopy due to nfs_export=on\n");
951 			config->metacopy = false;
956 	/* Resolve userxattr -> !redirect && !metacopy dependency */
964 		if (config->metacopy && set.metacopy) {
965 			pr_err("conflicting options: userxattr,metacopy=on\n");
969 		 * Silently disable default setting of redirect and metacopy.
975 		config->metacopy = false;
988 		if (config->metacopy && set.metacopy) {
989 			pr_err("metacopy requires permission to access trusted xattrs\n");
1062 	if (ofs->config.metacopy != ovl_metacopy_def)
1063 		seq_printf(m, ",metacopy=%s", str_on_off(ofs->config.metacopy));