2N/A/*
2N/A * GRUB -- GRand Unified Bootloader
2N/A * Copyright (C) 2009 Free Software Foundation, Inc.
2N/A *
2N/A * GRUB is free software: you can redistribute it and/or modify
2N/A * it under the terms of the GNU General Public License as published by
2N/A * the Free Software Foundation, either version 3 of the License, or
2N/A * (at your option) any later version.
2N/A *
2N/A * GRUB is distributed in the hope that it will be useful,
2N/A * but WITHOUT ANY WARRANTY; without even the implied warranty of
2N/A * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2N/A * GNU General Public License for more details.
2N/A *
2N/A * You should have received a copy of the GNU General Public License
2N/A * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
2N/A */
2N/A
2N/A#include <grub/env.h>
2N/A#include <grub/misc.h>
2N/A#include <grub/disk.h>
2N/A#include <grub/machine/biosnum.h>
2N/A
2N/Astatic int
2N/Agrub_get_root_biosnumber_default (void)
2N/A{
2N/A const char *biosnum;
2N/A int ret = -1;
2N/A grub_device_t dev;
2N/A
2N/A biosnum = grub_env_get ("biosnum");
2N/A
2N/A if (biosnum)
2N/A return grub_strtoul (biosnum, 0, 0);
2N/A
2N/A dev = grub_device_open (0);
2N/A if (dev && dev->disk && dev->disk->dev
2N/A && dev->disk->dev->id == GRUB_DISK_DEVICE_BIOSDISK_ID)
2N/A ret = (int) dev->disk->id;
2N/A
2N/A if (dev)
2N/A grub_device_close (dev);
2N/A
2N/A return ret;
2N/A}
2N/A
2N/Aint (*grub_get_root_biosnumber) (void) = grub_get_root_biosnumber_default;