grub/kern/loader.c
okuji 4b13b216f4 2004-04-04 Yoshinori K. Okuji <okuji@enbug.org>
All symbols prefixed with PUPA_ and pupa_ are renamed to GRUB_
	and grub_, respectively. Because the conversion is trivial and
	mechanical, I omit the details here. Please refer to the CVS
	if you need more information.
2004-04-04 13:46:03 +00:00

63 lines
1.6 KiB
C

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/loader.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/err.h>
static grub_err_t (*grub_loader_boot_func) (void);
static grub_err_t (*grub_loader_unload_func) (void);
static int grub_loader_loaded;
void
grub_loader_set (grub_err_t (*boot) (void),
grub_err_t (*unload) (void))
{
if (grub_loader_loaded && grub_loader_unload_func)
grub_loader_unload_func ();
grub_loader_boot_func = boot;
grub_loader_unload_func = unload;
grub_loader_loaded = 1;
}
void
grub_loader_unset(void)
{
if (grub_loader_loaded && grub_loader_unload_func)
grub_loader_unload_func ();
grub_loader_boot_func = 0;
grub_loader_unload_func = 0;
grub_loader_loaded = 0;
}
grub_err_t
grub_loader_boot (void)
{
if (! grub_loader_loaded)
return grub_error (GRUB_ERR_NO_KERNEL, "no loaded kernel");
return (grub_loader_boot_func) ();
}