46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 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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#include <grub/env.h>
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#include <grub/misc.h>
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#include <grub/disk.h>
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static int
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grub_get_root_biosnumber_default (void)
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{
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char *biosnum;
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int ret = -1;
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grub_device_t dev;
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biosnum = grub_env_get ("biosnum");
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if (biosnum)
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return grub_strtoul (biosnum, 0, 0);
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dev = grub_device_open (0);
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if (dev && dev->disk && dev->disk->dev
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&& dev->disk->dev->id == GRUB_DISK_DEVICE_BIOSDISK_ID)
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ret = (int) dev->disk->id;
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if (dev)
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grub_device_close (dev);
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return ret;
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}
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int (*grub_get_root_biosnumber) (void) = grub_get_root_biosnumber_default;
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