46 #define for_each_xattr_handler(handlers, handler)		\  argument
48 		for ((handler) = *(handlers)++;			\
49 			(handler) != NULL;			\
50 			(handler) = *(handlers)++)
59 	const struct xattr_handler *handler;  in xattr_resolve_name()  local
66 	for_each_xattr_handler(handlers, handler) {  in xattr_resolve_name()
69 		n = strcmp_prefix(*name, xattr_prefix(handler));  in xattr_resolve_name()
71 			if (!handler->prefix ^ !*n) {  in xattr_resolve_name()
77 			return handler;  in xattr_resolve_name()
142  * Look for any handler that deals with the specified namespace.
148 	const struct xattr_handler *handler;  in xattr_supported_namespace()  local
159 	for_each_xattr_handler(handlers, handler) {  in xattr_supported_namespace()
160 		if (!strncmp(xattr_prefix(handler), prefix, preflen))  in xattr_supported_namespace()
173 	const struct xattr_handler *handler;  in __vfs_setxattr()  local
175 	handler = xattr_resolve_name(inode, &name);  in __vfs_setxattr()
176 	if (IS_ERR(handler))  in __vfs_setxattr()
177 		return PTR_ERR(handler);  in __vfs_setxattr()
178 	if (!handler->set)  in __vfs_setxattr()
182 	return handler->set(handler, mnt_userns, dentry, inode, name, value,  in __vfs_setxattr()
366 	const struct xattr_handler *handler;  in vfs_getxattr_alloc()  local
375 	handler = xattr_resolve_name(inode, &name);  in vfs_getxattr_alloc()
376 	if (IS_ERR(handler))  in vfs_getxattr_alloc()
377 		return PTR_ERR(handler);  in vfs_getxattr_alloc()
378 	if (!handler->get)  in vfs_getxattr_alloc()
380 	error = handler->get(handler, dentry, inode, name, NULL, 0);  in vfs_getxattr_alloc()
391 	error = handler->get(handler, dentry, inode, name, value, error);  in vfs_getxattr_alloc()
400 	const struct xattr_handler *handler;  in __vfs_getxattr()  local
402 	handler = xattr_resolve_name(inode, &name);  in __vfs_getxattr()
403 	if (IS_ERR(handler))  in __vfs_getxattr()
404 		return PTR_ERR(handler);  in __vfs_getxattr()
405 	if (!handler->get)  in __vfs_getxattr()
407 	return handler->get(handler, dentry, inode, name, value, size);  in __vfs_getxattr()
472 	const struct xattr_handler *handler;  in __vfs_removexattr()  local
474 	handler = xattr_resolve_name(inode, &name);  in __vfs_removexattr()
475 	if (IS_ERR(handler))  in __vfs_removexattr()
476 		return PTR_ERR(handler);  in __vfs_removexattr()
477 	if (!handler->set)  in __vfs_removexattr()
479 	return handler->set(handler, mnt_userns, dentry, inode, name, NULL, 0,  in __vfs_removexattr()
940 	const struct xattr_handler *handler, **handlers = dentry->d_sb->s_xattr;  in generic_listxattr()  local
944 		for_each_xattr_handler(handlers, handler) {  in generic_listxattr()
945 			if (!handler->name ||  in generic_listxattr()
946 			    (handler->list && !handler->list(dentry)))  in generic_listxattr()
948 			size += strlen(handler->name) + 1;  in generic_listxattr()
954 		for_each_xattr_handler(handlers, handler) {  in generic_listxattr()
955 			if (!handler->name ||  in generic_listxattr()
956 			    (handler->list && !handler->list(dentry)))  in generic_listxattr()
958 			len = strlen(handler->name);  in generic_listxattr()
961 			memcpy(buf, handler->name, len + 1);  in generic_listxattr()
974  * @handler:	handler of the xattr_handler operation
977  * The get and set xattr handler operations are called with the remainder of
978  * the attribute name after skipping the handler's prefix: for example, "foo"
979  * is passed to the get operation of a handler with prefix "user." to get
982  * Note: the list xattr handler operation when called from the vfs is passed a
986 const char *xattr_full_name(const struct xattr_handler *handler,  in xattr_full_name()  argument
989 	size_t prefix_len = strlen(xattr_prefix(handler));  in xattr_full_name()