mirror of
https://git.proxmox.com/git/grub2
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75a807cf00
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
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/* loader.h - OS loaders */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2003,2004,2006,2007,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_LOADER_HEADER
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#define GRUB_LOADER_HEADER 1
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#include <grub/file.h>
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#include <grub/symbol.h>
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#include <grub/err.h>
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#include <grub/types.h>
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/* Check if a loader is loaded. */
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int grub_loader_is_loaded (void);
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/* Set loader functions. NORETURN must be set to true, if BOOT won't return
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to the original state. */
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void grub_loader_set (grub_err_t (*boot) (void),
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grub_err_t (*unload) (void),
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int noreturn);
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/* Unset current loader, if any. */
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void grub_loader_unset (void);
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/* Call the boot hook in current loader. This may or may not return,
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depending on the setting by grub_loader_set. */
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grub_err_t grub_loader_boot (void);
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/* The space between numbers is intentional for the simplicity of adding new
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values even if external modules use them. */
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typedef enum {
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/* A preboot hook which can use everything and turns nothing off. */
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GRUB_LOADER_PREBOOT_HOOK_PRIO_NORMAL = 400,
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/* A preboot hook which can't use disks and may stop disks. */
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GRUB_LOADER_PREBOOT_HOOK_PRIO_DISK = 300,
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/* A preboot hook which can't use disks or console and may stop console. */
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GRUB_LOADER_PREBOOT_HOOK_PRIO_CONSOLE = 200,
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/* A preboot hook which can't use disks or console, can't modify memory map
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and may stop memory services or finalize memory map. */
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GRUB_LOADER_PREBOOT_HOOK_PRIO_MEMORY = 100,
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} grub_loader_preboot_hook_prio_t;
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/* Register a preboot hook. */
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void *grub_loader_register_preboot_hook (grub_err_t (*preboot_func) (int noret),
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grub_err_t (*preboot_rest_func) (void),
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grub_loader_preboot_hook_prio_t prio);
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/* Unregister given preboot hook. */
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void grub_loader_unregister_preboot_hook (void *hnd);
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#endif /* ! GRUB_LOADER_HEADER */
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