grub/commands/boot.c
carles 77a795923b 2010-01-03 Carles Pina i Estany <carles@pina.cat>
* commands/acpi.c: Gettextizze help strings and/or options. Include
	`grub/i18n.h' if needed.
	* commands/blocklist.c: Likewise.
	* commands/boot.c: Likewise.
	* commands/cat.c: Likewise.
	* commands/cmp.c: Likewise.
	* commands/configfile.c: Likewise.
	* commands/crc.c: Likewise.
	* commands/date.c: Likewise.
	* commands/echo.c: Likewise.
	* commands/efi/fixvideo.c: Likewise.
	* commands/efi/loadbios.c: Likewise.
	* commands/gptsync.c: Likewise.
	* commands/halt.c: Likewise.
	* commands/handler.c: Likewise.
	* commands/hdparm.c: Likewise.
	* commands/hexdump.c: Likewise.
	* commands/i386/cpuid.c: Likewise.
	* commands/i386/pc/drivemap.c: Likewise.
	* commands/i386/pc/halt.c: Likewise.
	* commands/i386/pc/pxecmd.c: Likewise.
	* commands/i386/pc/vbeinfo.c: Likewise.
	* commands/i386/pc/vbetest.c: Likewise.
	* commands/ieee1275/suspend.c: Likewise.
	* commands/keystatus.c: Likewise.
	* commands/loadenv.c: Likewise.
	* commands/ls.c: Likewise.
	* commands/lsmmap.c: Likewise.
	* commands/lspci.c: Likewise.
	* commands/memrw.c: Likewise.
	* commands/minicmd.c: Likewise.
	* commands/parttool.c: Likewise.
	* commands/password.c: Likewise.
	* commands/probe.c: Likewise.
	* commands/read.c: Likewise.
	* commands/reboot.c: Likewise.
	* commands/search.c: Likewise.
	* commands/sleep.c: Likewise.
	* commands/test.c: Likewise.
	* commands/true.c: Likewise.
	* commands/usbtest.c: Likewise.
	* commands/videotest.c: Likewise.
	* commands/xnu_uuid.c: Likewise.
	* disk/loopback.c: Likewise.
	* hello/hello.c: Likewise.
	* loader/i386/bsd.c: Likewise.
	* term/i386/pc/serial.c: Likewise.
	* po/POTFILES: Add new files.
2010-01-03 19:24:22 +01:00

196 lines
4.4 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* boot.c - command to boot an operating system */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2004,2005,2007,2009 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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, see <http://www.gnu.org/licenses/>.
*/
#include <grub/normal.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/loader.h>
#include <grub/kernel.h>
#include <grub/mm.h>
#include <grub/i18n.h>
static grub_err_t (*grub_loader_boot_func) (void);
static grub_err_t (*grub_loader_unload_func) (void);
static int grub_loader_noreturn;
struct grub_preboot_t
{
grub_err_t (*preboot_func) (int);
grub_err_t (*preboot_rest_func) (void);
grub_loader_preboot_hook_prio_t prio;
struct grub_preboot_t *next;
struct grub_preboot_t *prev;
};
static int grub_loader_loaded;
static struct grub_preboot_t *preboots_head = 0,
*preboots_tail = 0;
int
grub_loader_is_loaded (void)
{
return grub_loader_loaded;
}
/* Register a preboot hook. */
void *
grub_loader_register_preboot_hook (grub_err_t (*preboot_func) (int noreturn),
grub_err_t (*preboot_rest_func) (void),
grub_loader_preboot_hook_prio_t prio)
{
struct grub_preboot_t *cur, *new_preboot;
if (! preboot_func && ! preboot_rest_func)
return 0;
new_preboot = (struct grub_preboot_t *)
grub_malloc (sizeof (struct grub_preboot_t));
if (! new_preboot)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, "hook not added");
return 0;
}
new_preboot->preboot_func = preboot_func;
new_preboot->preboot_rest_func = preboot_rest_func;
new_preboot->prio = prio;
for (cur = preboots_head; cur && cur->prio > prio; cur = cur->next);
if (cur)
{
new_preboot->next = cur;
new_preboot->prev = cur->prev;
cur->prev = new_preboot;
}
else
{
new_preboot->next = 0;
new_preboot->prev = preboots_tail;
preboots_tail = new_preboot;
}
if (new_preboot->prev)
new_preboot->prev->next = new_preboot;
else
preboots_head = new_preboot;
return new_preboot;
}
void
grub_loader_unregister_preboot_hook (void *hnd)
{
struct grub_preboot_t *preb = hnd;
if (preb->next)
preb->next->prev = preb->prev;
else
preboots_tail = preb->prev;
if (preb->prev)
preb->prev->next = preb->next;
else
preboots_head = preb->next;
grub_free (preb);
}
void
grub_loader_set (grub_err_t (*boot) (void),
grub_err_t (*unload) (void),
int noreturn)
{
if (grub_loader_loaded && grub_loader_unload_func)
grub_loader_unload_func ();
grub_loader_boot_func = boot;
grub_loader_unload_func = unload;
grub_loader_noreturn = noreturn;
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)
{
grub_err_t err = GRUB_ERR_NONE;
struct grub_preboot_t *cur;
if (! grub_loader_loaded)
return grub_error (GRUB_ERR_NO_KERNEL, "no loaded kernel");
if (grub_loader_noreturn)
grub_machine_fini ();
for (cur = preboots_head; cur; cur = cur->next)
{
err = cur->preboot_func (grub_loader_noreturn);
if (err)
{
for (cur = cur->prev; cur; cur = cur->prev)
cur->preboot_rest_func ();
return err;
}
}
err = (grub_loader_boot_func) ();
for (cur = preboots_tail; cur; cur = cur->prev)
if (! err)
err = cur->preboot_rest_func ();
else
cur->preboot_rest_func ();
return err;
}
/* boot */
static grub_err_t
grub_cmd_boot (struct grub_command *cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char *argv[] __attribute__ ((unused)))
{
return grub_loader_boot ();
}
static grub_command_t cmd_boot;
GRUB_MOD_INIT(boot)
{
cmd_boot =
grub_register_command ("boot", grub_cmd_boot,
0, N_("Boot an operating system."));
}
GRUB_MOD_FINI(boot)
{
grub_unregister_command (cmd_boot);
}