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- /*
- * kernel/power/tuxonice_bio_internal.h
- *
- * Copyright (C) 2009-2014 Nigel Cunningham (nigel at tuxonice net)
- *
- * Distributed under GPLv2.
- *
- * This file contains declarations for functions exported from
- * tuxonice_bio.c, which contains low level io functions.
- */
- /* Extent chains */
- void toi_extent_state_goto_start(void);
- void toi_extent_state_save(int slot);
- int go_next_page(int writing, int section_barrier);
- void toi_extent_state_restore(int slot);
- void free_all_bdev_info(void);
- int devices_of_same_priority(struct toi_bdev_info *this);
- int toi_register_storage_chain(struct toi_bdev_info *new);
- int toi_serialise_extent_chains(void);
- int toi_load_extent_chains(void);
- int toi_bio_rw_page(int writing, struct page *page, int is_readahead,
- int free_group);
- int toi_bio_restore_original_signature(void);
- int toi_bio_devinfo_storage_needed(void);
- unsigned long get_headerblock(void);
- dev_t get_header_dev_t(void);
- struct block_device *get_header_bdev(void);
- int toi_bio_allocate_storage(unsigned long request);
- /* Signature functions */
- #define HaveImage "HaveImage"
- #define NoImage "TuxOnIce"
- #define sig_size (sizeof(HaveImage))
- struct sig_data {
- char sig[sig_size];
- int have_image;
- int resumed_before;
- char have_uuid;
- char header_uuid[17];
- dev_t header_dev_t;
- unsigned long first_header_block;
- /* Repeat the signature to be sure we have a header version */
- char sig2[sig_size];
- int header_version;
- };
- void forget_signature_page(void);
- int toi_check_for_signature(void);
- int toi_bio_image_exists(int quiet);
- int get_signature_page(void);
- int toi_bio_mark_resume_attempted(int);
- extern char *toi_cur_sig_page;
- extern char *toi_orig_sig_page;
- int toi_bio_mark_have_image(void);
- extern struct sig_data *toi_sig_data;
- extern dev_t resume_dev_t;
- extern struct block_device *resume_block_device;
- extern struct block_device *header_block_device;
- extern unsigned long resume_firstblock;
- struct block_device *open_bdev(dev_t device, int display_errs);
- extern int current_stream;
- extern int more_readahead;
- int toi_do_io(int writing, struct block_device *bdev, long block0,
- struct page *page, int is_readahead, int syncio, int free_group);
- int get_main_pool_phys_params(void);
- void toi_close_bdev(struct block_device *bdev);
- struct block_device *toi_open_bdev(char *uuid, dev_t default_device,
- int display_errs);
- extern struct toi_module_ops toi_blockwriter_ops;
- void dump_block_chains(void);
- void debug_broken_header(void);
- extern unsigned long raw_pages_allocd, header_pages_reserved;
- int toi_bio_chains_debug_info(char *buffer, int size);
- void toi_bio_chains_post_atomic(struct toi_boot_kernel_data *bkd);
- int toi_bio_scan_for_image(int quiet);
- int toi_bio_get_header_version(void);
- void close_resume_dev_t(int force);
- int open_resume_dev_t(int force, int quiet);
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