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2009-04-27 Vladimir Serbinenko <phcoder@gmail.com>

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Preboot hooks support

	* commands/boot.c (struct grub_preboot_t): new declaration
	(preboots_head): new variable
	(preboots_tail): likewise
	(grub_loader_register_preboot_hook): new function
	(grub_loader_unregister_preboot_hook): likewise
	(grub_loader_set): launch preboot hooks
	* include/grub/loader.h (grub_loader_preboot_hook_prio_t): new type
	(grub_loader_register_preboot_hook): new declaration
	(grub_loader_unregister_preboot_hook): likewise
This commit is contained in:
phcoder 2009-04-27 16:48:58 +00:00
parent 5af922b5f1
commit 75a807cf00
3 changed files with 133 additions and 3 deletions
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22
include/grub/loader.h
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@ -41,4 +41,26 @@ void grub_loader_unset (void);
depending on the setting by grub_loader_set. */
grub_err_t grub_loader_boot (void);
/* The space between numbers is intentional for the simplicity of adding new
values even if external modules use them. */
typedef enum {
/* A preboot hook which can use everything and turns nothing off. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_NORMAL = 400,
/* A preboot hook which can't use disks and may stop disks. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_DISK = 300,
/* A preboot hook which can't use disks or console and may stop console. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_CONSOLE = 200,
/* A preboot hook which can't use disks or console, can't modify memory map
and may stop memory services or finalize memory map. */
GRUB_LOADER_PREBOOT_HOOK_PRIO_MEMORY = 100,
} grub_loader_preboot_hook_prio_t;
/* Register a preboot hook. */
void *grub_loader_register_preboot_hook (grub_err_t (*preboot_func) (int noret),
grub_err_t (*preboot_rest_func) (void),
grub_loader_preboot_hook_prio_t prio);
/* Unregister given preboot hook. */
void grub_loader_unregister_preboot_hook (void *hnd);
#endif /* ! GRUB_LOADER_HEADER */