2006-06-04 Yoshinori K. Okuji <okuji@enbug.org>

Clean up the code to support 64-bit addressing in disks and
        files. This change is not enough for filesystems yet.

        * util/i386/pc/grub-setup.c (struct boot_blocklist): Change the
        type of "start" to grub_uint64_t.
        (setup): Change the types of KERNEL_SECTOR and FIRST_SECTOR to
        grub_disk_addr_t * and grub_disk_addr_t. Fix the format string in
        save_first_sector and save_blocklists. Use grub_le_to_cpu64 to
        convert addresses.

        * util/i386/pc/biosdisk.c (open_device): Change the type of SECTOR
        to grub_disk_addr_t.

        * partmap/gpt.c (gpt_partition_map_iterate): Fix the format
        string.

        * partmap/pc.c (pc_partition_map_iterate): Likewise.

        * partmap/amiga.c (amiga_partition_map_iterate): Cast RDSK.MAGIC
        to char *.

        * normal/script.c (grub_script_parse): Remove unused MEMFREE.

        * normal/parser.y (YYLTYPE_IS_TRIVIAL): New macro.

        * normal/lexer.c (grub_script_yyerror): Specify unused to LEX.

        * loader/i386/pc/multiboot.c (grub_multiboot_load_elf64): Cast -1
        to grub_off_t, to detect an error from grub_file_seek.
        (grub_multiboot_load_elf32): Likewise.

        * kern/misc.c (grub_strtoul): Use grub_strtoull. Return the
        maximum unsigned long value when an overflow is detected.
        (grub_strtoull): New function.
        (grub_divmod64): Likewise.
        (grub_lltoa): use grub_divmod64.

        * kern/fs.c (struct grub_fs_block): Change the type of "offset" to
        grub_disk_addr_t.
        (grub_fs_blocklist_open): Increase P if P is not NULL to advance
        the pointer to next character. Use grub_strtoull instead of
        grub_strtoul.
        (grub_fs_blocklist_read): Change the types of SECTOR, OFFSET and
        SIZE to grub_disk_addr_t, grub_off_t and grub_size_t,
        respectively.

        * kern/file.c (grub_file_read): Prevent an oveflow of LEN, as the
        return value is signed.
        (grub_file_seek): Change the type of OLD to grub_off_t. Do not
        test if OFFSET is less than zero, as OFFSET is unsigned now.

        * kern/disk.c (struct grub_disk_cache): Change the type of
        "sector" to grub_disk_addr_t.
        (grub_disk_cache_get_index): Change the type of SECTOR to
        grub_disk_addr_t. Calculate the hash with SECTOR casted to
        unsigned after shifting.
        (grub_disk_cache_invalidate): Change the type of SECTOR to
        grub_disk_addr_t.
        (grub_disk_cache_unlock): Likewise.
        (grub_disk_cache_store): Likewise.
        (grub_disk_check_range): Change the types of SECTOR, OFFSET, SIZE,
        START and LEN to grub_disk_addr_t *, grub_off_t *, grub_size_t,
        grub_disk_addr_t and grub_uint64_t, respectively.
        (grub_disk_read): Use an unsigned variable REAL_OFFSET for the
        body, as the value of OFFSET is tweaked by
        grub_disk_check_range. Change the types of START_SECTOR, LEN and
        POS to grub_disk_addr_t, grub_size_t and grub_size_t,
        respectively.
        (grub_disk_write): Use an unsigned variable REAL_OFFSET for the
        body, as the value of OFFSET is tweaked by
        grub_disk_check_range. Change the types of LEN and N to
        grub_size_t.

        * io/gzio.c (struct grub_gzio): Change the types of "data_offset"
        and "saved_offset" to grub_off_t.
        (test_header): Cast BUF to char *.
        (get_byte): Cast GZIO->DATA_OFFSET to grub_off_t. Cast GZIO->INBUF
        to char *.
        (grub_gzio_read): Change the types of OFFSET and SIZE to
        grub_off_t and grub_size_t, respectively.

        * include/grub/i386/pc/boot.h (GRUB_BOOT_MACHINE_FORCE_LBA):
        Removed.
        (GRUB_BOOT_MACHINE_BOOT_DRIVE): Changed to 0x4c.
        (GRUB_BOOT_MACHINE_KERNEL_ADDRESS): Changed to 0x40.
        (GRUB_BOOT_MACHINE_KERNEL_SEGMENT): Changed to 0x42.
        (GRUB_BOOT_MACHINE_DRIVE_CHECK): Changed to 0x4e.
        (GRUB_BOOT_MACHINE_LIST_SIZE): Increased to 12.

        * include/grub/types.h (grub_off_t): Unconditionally set to
        grub_uint64_t.
        (grub_disk_addr_t): Changed to grub_uint64_t.

        * include/grub/partition.h (struct grub_partition): Change the
        types of "start", "len" and "offset" to grub_disk_addr_t,
        grub_uint64_t and grub_disk_addr_t, respectively.
        (grub_partition_get_start): Return grub_disk_addr_t.
        (grub_partition_get_len): Return grub_uint64_t.

        * include/grub/misc.h (grub_strtoull): New prototype.
        (grub_divmod64): Likewise.

        * include/grub/fshelp.h (grub_fshelp_read_file): Change the types
        of SECTOR, LEN and FILESIZE to grub_disk_addr_t, grub_size_t and
        grub_off_t, respectively.
        All callers and references changed.

        * include/grub/fs.h (struct grub_fs): Change the type of LEN to
        grub_size_t in "read".
        All callers and references changed.

        * include/grub/file.h (struct grub_file): Change the types of
        "offset" and "size" to grub_off_t and grub_off_t,
        respectively. Change the type of SECTOR to grub_disk_addr_t in
        "read_hook".
        (grub_file_read): Change the type of LEN to grub_size_t.
        (grub_file_seek): Return grub_off_t. Change the type of OFFSET to
        grub_off_t.
        (grub_file_size): Return grub_off_t.
        (grub_file_tell): Likewise.
        All callers and references changed.

        * include/grub/disk.h (struct grub_disk_dev): Change the types of
        SECTOR and SIZE to grub_disk_addr_t and grub_size_t in "read" and
        "write".
        (struct grub_disk): Change the type of "total_sectors" to
        grub_uint64_t. Change the type of SECTOR to grub_disk_addr_t in
        "read_hook".
        (grub_disk_read): Change the types of SECTOR, OFFSET and SIZE to
        grub_disk_addr_t, grub_off_t and grub_size_t, respectively.
        (grub_disk_write): Likewise.
        All callers and references changed.

        * fs/iso9660.c (grub_iso9660_susp_iterate): Cast parameters to
        char * for grub_strncmp to silence gcc.
        (grub_iso9660_mount): Likewise.
        (grub_iso9660_mount): Likewise.
        (grub_iso9660_read_symlink): Likewise. Also, remove the nonsense
        return statement.
        (grub_iso9660_iterate_dir): Likewise.
        (grub_iso9660_label): Cast DATA->VOLDESC.VOLNAME to char *.

        * fs/hfs.c (grub_hfs_read_file): Change the types of SECTOR and
        LEN to grub_disk_addr_t and grub_size_t, respectively.

        * fs/hfsplus.c (grub_hfsplus_read_file): Likewise.

        * fs/jfs.c (grub_jfs_read_file): Likewise.

        * fs/minix.c (grub_jfs_read_file): Likewise.

        * fs/sfs.c (grub_jfs_read_file): Likewise.

        * fs/ufs.c (grub_jfs_read_file): Likewise.

        * fs/xfs.c (grub_jfs_read_file): Likewise.

        * fs/fat.c (grub_fat_read_data): Change the types of SECTOR, LEN
        and SIZE to grub_disk_addr_t, grub_size_t and grub_size_t,
        respectively.

        * fs/ext2.c (grub_ext2_read_block): When an error happens, set
        BLKNR to -1 instead of returning GRUB_ERRNO.
        (grub_ext2_read_file): Change the types of SECTOR and
        LEN to grub_disk_addr_t and grub_size_t, respectively.

        * fs/affs.c (grub_affs_read_file): Change the types of SECTOR and
        LEN to grub_disk_addr_t and grub_size_t, respectively.

        * font/manager.c (grub_font_get_glyph): Cast BITMAP to char * for
        grub_file_read.

        * disk/ieee1275/ofdisk.c (grub_ofdisk_read): Fix the format
        string. Do not cast SECTOR explicitly.

        * disk/i386/pc/biosdisk.c (grub_biosdisk_open): Change the type of
        TOTAL_SECTORS to grub_uint64_t. Do not mask DRP->TOTAL_SECTORS.
        (grub_biosdisk_rw): Change the types of SECTOR and SIZE to
        grub_disk_addr_t and grub_size_t, respectively. If the sector is
        over 2TB and LBA mode is not supported, raise an error.
        (get_safe_sectors): New function.
        (grub_biosdisk_read): Use get_safe_sectors.
        (grub_biosdisk_write): Likewise.

        * disk/efi/efidisk.c (grub_efidisk_read): Fix the format string.
        (grub_efidisk_write): Likewise.

        * disk/loopback.c (delete_loopback): Cosmetic changes.
        (grub_cmd_loopback): Likewise. Also, test NEWDEV->FILENAME
        correctly.
        (grub_loopback_open): Likewise.
        (grub_loopback_read): Likewise. Also, change the type of POS to
        grub_off_t, and fix the usage of grub_memset.

        * commands/i386/pc/play.c: Include grub/machine/time.h.

        * commands/ls.c (grub_ls_list_files): Use "llu" instead of "d" to
        print FILE->SIZE.

        * commands/configfile.c: Include grub/env.h.

        * commands/cmp.c (grub_cmd_cmp): Do not use ERR, but use
        GRUB_ERRNO directly instead. Change the type of POS to
        grub_off_t. Follow the coding standard.

        * commands/blocklist.c: Include grub/partition.h.
        (grub_cmd_blocklist): Return an error if the underlying device is
        not a disk. Take the starting sector of a partition into account,
        if a partition is used.

        * boot/i386/pc/diskboot.S (bootloop): Adapted to the new offset of
        a length field.
        (lba_mode): Support 64-bit addresses.
        (chs_mode): Likewise.
        (copy_buffer): Adapted to the new offsets of a length field and a
        segment field.
        (blocklist_default_start): Allocate 64-bit space.

        * boot/i386/pc/boot.S (force_lba): Removed.
        (boot_drive): Moved to under KERNEL_SECTOR.
        (kernel_sector): Moved to under KENREL_SEGMENT. Allocate 64-bit
        space.
        (real_start): Set %si earlier. Remove code for FORCE_LBA, since it
        is useless.
        (lba_mode): Refactored to support a 64-bit address. More size
        optimization.
        (setup_sectors): Likewise.
This commit is contained in:
okuji 2006-06-04 15:56:55 +00:00
parent 53af98ad17
commit 524a1e6a40
47 changed files with 708 additions and 380 deletions

View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005 Free Software Foundation, Inc.
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006 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
@ -126,7 +126,7 @@ grub_biosdisk_iterate (int (*hook) (const char *name))
static grub_err_t
grub_biosdisk_open (const char *name, grub_disk_t disk)
{
unsigned long total_sectors = 0;
grub_uint64_t total_sectors = 0;
int drive;
struct grub_biosdisk_data *data;
@ -158,13 +158,12 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
/* Clear out the DRP. */
grub_memset (drp, 0, sizeof (*drp));
drp->size = sizeof (*drp);
if (!grub_biosdisk_get_diskinfo_int13_extensions (drive, drp))
if (! grub_biosdisk_get_diskinfo_int13_extensions (drive, drp))
{
data->flags = GRUB_BIOSDISK_FLAG_LBA;
/* FIXME: 2TB limit. */
if (drp->total_sectors)
total_sectors = drp->total_sectors & ~0L;
total_sectors = drp->total_sectors;
else
/* Some buggy BIOSes doesn't return the total sectors
correctly but returns zero. So if it is zero, compute
@ -204,7 +203,7 @@ grub_biosdisk_close (grub_disk_t disk)
static grub_err_t
grub_biosdisk_rw (int cmd, grub_disk_t disk,
unsigned long sector, unsigned long size,
grub_disk_addr_t sector, grub_size_t size,
unsigned segment)
{
struct grub_biosdisk_data *data = disk->data;
@ -234,9 +233,15 @@ grub_biosdisk_rw (int cmd, grub_disk_t disk,
{
unsigned coff, hoff, soff;
unsigned head;
unsigned real_sector = (unsigned) sector;
soff = sector % data->sectors + 1;
head = sector / data->sectors;
/* It is impossible to reach over 2TB with the traditional
CHS access. */
if (sector > ~0UL)
return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of disk");
soff = real_sector % data->sectors + 1;
head = real_sector / data->sectors;
hoff = head % data->heads;
coff = head / data->heads;
@ -259,17 +264,36 @@ grub_biosdisk_rw (int cmd, grub_disk_t disk,
return GRUB_ERR_NONE;
}
/* Return the number of sectors which can be read safely at a time. */
static grub_size_t
get_safe_sectors (grub_disk_addr_t sector, grub_uint32_t sectors)
{
grub_size_t size;
grub_uint32_t offset;
/* OFFSET = SECTOR % SECTORS */
grub_divmod64 (sector, sectors, &offset);
size = sectors - offset;
/* Limit the max to 0x7f because of Phoenix EDD. */
if (size > 0x7f)
size = 0x7f;
return size;
}
static grub_err_t
grub_biosdisk_read (grub_disk_t disk, unsigned long sector,
unsigned long size, char *buf)
grub_biosdisk_read (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf)
{
struct grub_biosdisk_data *data = disk->data;
while (size)
{
unsigned long len;
grub_size_t len;
len = data->sectors - (sector % data->sectors);
len = get_safe_sectors (sector, data->sectors);
if (len > size)
len = size;
@ -288,16 +312,16 @@ grub_biosdisk_read (grub_disk_t disk, unsigned long sector,
}
static grub_err_t
grub_biosdisk_write (grub_disk_t disk, unsigned long sector,
unsigned long size, const char *buf)
grub_biosdisk_write (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, const char *buf)
{
struct grub_biosdisk_data *data = disk->data;
while (size)
{
unsigned long len;
grub_size_t len;
len = data->sectors - (sector % data->sectors);
len = get_safe_sectors (sector, data->sectors);
if (len > size)
len = size;