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9f4689e21d
* stage2/fsys_jfs.c (jfs_read) [STAGE1_5]: Set and reset DISK_READ_FUNC even in Stage 1.5. * stage2/fsys_xfs.c (xfs_read) [STAGE1_5]: Likewise. * stage2/stage1_5.c (saved_sector): Initialized with -1. (cmain): Check if SAVED_SECTOR was set appropriately after reading the second sector of Stage 2. If SAVED_SECTOR is not set (i.e. it is equal to -1), print an error and stop.
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2001,2002 Free Software Foundation, Inc.
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "shared.h"
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static int saved_sector = -1;
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static void
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disk_read_savesect_func (int sector, int offset, int length)
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{
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saved_sector = sector;
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}
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void
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cmain (void)
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{
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grub_printf ("\n\nGRUB loading, please wait...\n");
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/*
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* Here load the true second-stage boot-loader.
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*/
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if (grub_open (config_file))
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{
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int ret;
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disk_read_hook = disk_read_savesect_func;
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grub_read ((char *) 0x8000, SECTOR_SIZE * 2);
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disk_read_hook = NULL;
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/* Sanity check: catch an internal error. */
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if (saved_sector == -1)
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{
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grub_printf ("internal error: the second sector of Stage 2 is unknown.");
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stop ();
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}
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ret = grub_read ((char *) 0x8000 + SECTOR_SIZE * 2, -1);
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grub_close ();
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if (ret)
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chain_stage2 (0, 0x8200, saved_sector);
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}
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/*
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* If not, then print error message and die.
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*/
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print_error ();
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stop ();
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}
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