/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef PAGE_ACTOR_H #define PAGE_ACTOR_H /* * Copyright (c) 2013 * Phillip Lougher <phillip@squashfs.org.uk> */ struct squashfs_page_actor { union { void **buffer; struct page **page; }; void *pageaddr; void *tmp_buffer; void *(*squashfs_first_page)(struct squashfs_page_actor *); void *(*squashfs_next_page)(struct squashfs_page_actor *); void (*squashfs_finish_page)(struct squashfs_page_actor *); int pages; int length; int next_page; int alloc_buffer; int returned_pages; pgoff_t next_index; }; extern struct squashfs_page_actor *squashfs_page_actor_init(void **buffer, int pages, int length); extern struct squashfs_page_actor *squashfs_page_actor_init_special( struct squashfs_sb_info *msblk, struct page **page, int pages, int length); static inline void squashfs_page_actor_free(struct squashfs_page_actor *actor) { kfree(actor->tmp_buffer); kfree(actor); } static inline void *squashfs_first_page(struct squashfs_page_actor *actor) { return actor->squashfs_first_page(actor); } static inline void *squashfs_next_page(struct squashfs_page_actor *actor) { return actor->squashfs_next_page(actor); } static inline void squashfs_finish_page(struct squashfs_page_actor *actor) { actor->squashfs_finish_page(actor); } static inline void squashfs_actor_nobuff(struct squashfs_page_actor *actor) { actor->alloc_buffer = 0; } #endif