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2002-05-25 Yoshinori K. Okuji <okuji@enbug.org>

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* stage2/builtins.c (boot_func): Load the boot partition
	information, only if the address of the boot partition entry is
	set appropriately.
	(real_root_func): If ATTEMPT_MOUNT is false, call open_partition
	and if successful, call set_bootdev, to set the offset of the
	boot partition and the address of the boot paetition entry.
	IF ATTEMPT_MOUNT is false, don't set BOOTDEV. The BSD evil hack
	is useless with the command "rootnoverify" anyway.
	* stage2/disk_io.c (boot_part_addr): Initialized with zero
	explicitly, to emphasize that it is invalid.
This commit is contained in:
okuji 2002-05-25 11:33:47 +00:00
parent 4339b22d7a
commit c65ae440c8
3 changed files with 37 additions and 14 deletions
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13
ChangeLog
View file

@ -1,3 +1,16 @@
2002-05-25 Yoshinori K. Okuji <okuji@enbug.org>
* stage2/builtins.c (boot_func): Load the boot partition
information, only if the address of the boot partition entry is
set appropriately.
(real_root_func): If ATTEMPT_MOUNT is false, call open_partition
and if successful, call set_bootdev, to set the offset of the
boot partition and the address of the boot paetition entry.
IF ATTEMPT_MOUNT is false, don't set BOOTDEV. The BSD evil hack
is useless with the command "rootnoverify" anyway.
* stage2/disk_io.c (boot_part_addr): Initialized with zero
explicitly, to emphasize that it is invalid.
2002-05-24 Yoshinori K. Okuji <okuji@enbug.org>
* stage2/builtins.c (real_root_func): New function.

34
stage2/builtins.c
View file

@ -296,8 +296,9 @@ boot_func (char *arg, int flags)
boot_drive = saved_drive;
/* Copy the boot partition information to 0x7be-0x7fd, if
BOOT_DRIVE is a hard disk drive. */
if (boot_drive & 0x80)
BOOT_DRIVE is a hard disk drive and the address of the boot
partition entry is set. */
if ((boot_drive & 0x80) && boot_part_addr)
{
char *dst, *src;
int i;
@ -3125,22 +3126,31 @@ real_root_func (char *arg, int attempt_mount)
if (! open_device () && errnum != ERR_FSYS_MOUNT)
return 1;
}
else
{
/* This is necessary, because the location of a partition table
must be set appropriately. */
if (open_partition ())
set_bootdev (0);
}
/* Clear ERRNUM. */
errnum = 0;
saved_partition = current_partition;
saved_drive = current_drive;
/* BSD and chainloading evil hacks !! */
biasptr = skip_to (0, next);
safe_parse_maxint (&biasptr, &hdbias);
errnum = 0;
bootdev = set_bootdev (hdbias);
/* Print the type of the filesystem. */
if (attempt_mount)
print_fsys_type ();
{
/* BSD and chainloading evil hacks !! */
biasptr = skip_to (0, next);
safe_parse_maxint (&biasptr, &hdbias);
errnum = 0;
bootdev = set_bootdev (hdbias);
/* Print the type of the filesystem. */
print_fsys_type ();
}
return 0;
}

4
stage2/disk_io.c
View file

@ -1,7 +1,7 @@
/* disk_io.c - implement abstract BIOS disk input and output */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
* Copyright (C) 1999,2000,2001,2002 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -85,7 +85,7 @@ unsigned long current_partition;
#ifndef STAGE1_5
/* The register ESI should contain the address of the partition to be
used for loading a chain-loader when chain-loading the loader. */
unsigned long boot_part_addr;
unsigned long boot_part_addr = 0;
unsigned long boot_part_offset;
#endif