Import from GRUB Legacy (lib/device.c):
* util/i386/pc/grub-mkdevicemap.c (get_i2o_disk_name): New function.
(init_device_map) [__linux__]: Add support for I2O devices.
* util/i386/pc/grub-install.in: Skip menu.lst when removing
/boot/grub/*.lst.
* util/i386/pc/getroot.c: Don't recurse into dotdirs (e.g. ".static").
* util/i386/pc/grub-mkdevicemap.c: Make sure the floppy device exists
before adding it to device.map.
* genmk.rb: Let GCC generate dependenceies the first time it
compiles a file; using the -MD option.
* conf/common.mk: Regenerate.
* conf/i386-pc.mk: Likewise.
* conf/i386-efi.mk: Likewise.
* conf/powerpc-ieee1275.mk: Likewise.
* conf/sparc64-ieee1275.mk: Likewise.
Move the prototypes of grub_setjmp and grub_longjmp to
cpu/setjmp.h, so that each architecture may specify different
attributes.
* include/grub/i386/setjmp.h (grub_setjmp): New prototype.
(grub_longjmp): Likewise.
* include/grub/powerpc/setjmp.h (grub_setjmp): Likewise..
(grub_longjmp): Likewise.
* include/grub/sparc64/setjmp.h (grub_setjmp): Likewise..
(grub_longjmp): Likewise.
* include/grub/setjmp.h [!GRUB_UTIL] (grub_setjmp): Removed.
[!GRUB_UTIL] (grub_longjmp): Removed.
* disk/i386/pc/biosdisk.c (struct grub_biosdisk_drp): Moved to ...
(struct grub_biosdisk_dap): Likewise.
* include/grub/i386/pc/biosdisk.h: ... to here. Also corrected
linkage settings for all functions.
* util/misc.c: Include config.h.
[!HAVE_MEMALIGN]: Do not include malloc.h.
(grub_memalign): Use posix_memalign, if present. Then, use
memalign, if present. Otherwise, emit an error.
* util/grub-emu.c: Do not include malloc.h.
* include/grub/util/misc.h: Include unistd.h. This is required for
FreeBSD, because off_t is defined in unistd.h. Reported by Harley
D. Eades III <hde@foobar-qux.org>.
* configure.ac (AC_GNU_SOURCE): Added.
(AC_CHECK_FUNCS): Check posix_memalign and memalign for the host
type.
* include/grub/types.h (grub_host_addr_t): Rename to
grub_target_addr_t.
(grub_host_off_t): Rename to grub_target_off_t.
(grub_host_size_t): Rename to grub_target_size_t.
(grub_host_ssize_t): Rename to grub_target_ssize_t.
Refer to GRUB_TARGET_SIZEOF_VOID_P to define those variables.
* include/grub/kernel.h (struct grub_module_header): Change type
of OFFSET to grub_target_off_t and type of SIZE to grub_target_size_t.
(grub_module_info): Likewise.
* loader/i386/pc/linux.c (grub_rescue_cmd_initrd): The conditional
of checking LINUX_MEM_SIZE was reverse. Reported by Jesus
Velazquez <jesus.velazquez@gmail.com>.
Count partitions from 1 instead of 0 in the string representation
of partitions. Still use 0-based internally.
* partmap/sun.c (grub_sun_is_valid): A cosmetic change.
(sun_partition_map_iterate): Use grub_partition_t instead of
struct grub_partition *. Cast DESC->START_CYLINDER to
grub_uint64_t after converting the endian.
(sun_partition_map_probe): Subtract 1 for PARTNUM.
(sun_partition_map_get_name): Add 1 to P->INDEX.
* partmap/pc.c (grub_partition_parse): Subtract 1 for
PCDATA->DOS_PART.
(pc_partition_map_get_name): Add 1 into PCDATA->DOS_PART.
* partmap/gpt.c (gpt_partition_map_iterate): Initialize PARTNO to
zero instead of one.
(gpt_partition_map_probe): Subtract 1 for PARTNUM.
(gpt_partition_map_get_name): Add 1 into P->INDEX.
* partmap/apple.c (apple_partition_map_iterate): Change the type
of POS to unsigned.
(apple_partition_map_probe): Subtract 1 for PARTNUM.
(apple_partition_map_get_name): Add 1 into P->INDEX.
* partmap/amiga.c (amiga_partition_map_iterate): Change the type
of POS to unsigned.
(amiga_partition_map_iterate): Cast NEXT to grub_off_t to
calculate the offset of a partition.
(amiga_partition_map_probe): Subtract 1 for PARTNUM.
(amiga_partition_map_get_name): Add 1 into P->INDEX.
* partmap/acorn.c (acorn_partition_map_find): Change the type of
SECTOR to grub_disk_addr_t.
(acorn_partition_map_iterate): Likewise.
(acorn_partition_map_probe): Subtract 1 for PARTNUM.
Change the type of SECTOR to grub_disk_addr_t. Declare P on the
top.
(acorn_partition_map_get_name): Add 1 into P->INDEX.
* kern/i386/pc/init.c (make_install_device): Add 1 into
GRUB_INSTALL_DOS_PART.
* fs/iso9660.c (grub_iso9660_mount): Fixed a reversed
conditional.
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.
* conf/common.rmk (grub_modules_init.lst): Depends on
$(MODSRCFILES). Grep only the files in $(MODSRCFILES). Make sure
that the target does not exist before producing.
(grub_modules_init.h): Remove the target before generating.
(grub_emu_init.c): Likewise.
* genmk.rb (PModule::rule): Add source files into MODSRCFILES.
* configure.ac: Don't set host_m32 for x86_64. Also reset LIBS
for the target-specific tests. Make sure that we also have the
up-to-date target variables for those tests.
* genmk.rb (Image::rule): Set FLAG to CFLAGS or ASFLAGS instead of
TARGET_CFLAGS or TARGET_ASFLAGS. There is no reason why
target-specific flags should be prefixed.
(PModule::rule): Likewise.
* include/grub/script.h (grub_script_cmdif): Renamed field 'bool' to
'exec_to_evaluate'. Renamed field 'true' to 'exec_on_true'. Renamed
field 'false' to 'exec_on_false'.
(grub_script_create_cmdif): Renamed argument names to reflect above
changes.
* normal/execute.c (grub_script_execute_cmdif): Likewise.
* normal/script.c (grub_script_create_cmdif): Likewise.
* fs/hfsplus.c (grub_hfsplus_btree_recoffset): Moved to near the
top.
(grub_hfsplus_btree_recptr): Likewise.
(grub_hfsplus_find_block): Do not take RETRY any longer. Use
FILEBLOCK both to pass a block number and store next block
number.
(grub_hfsplus_read_block): Rewritten heavily to support an extent
overflow file correctly. Specify errors appropriately, because
fshelp expects that GRUB_ERRNO is set when fails. Reuse
grub_hfsplus_btree_recptr to get the pointer to a found key.
(grub_hfsplus_btree_search): Return 1 instead of 0 when no match
is found.
* conf/i386-efi.rmk (pkgdata_MODULES): Added _linux.mod and
linux.mod.
(_linux_mod_SOURCES): New variable.
(_linux_mod_CFLAGS): Likewise.
(_linux_mod_LDFLAGS): Likewise.
(linux_mod_SOURCES): Likewise.
(linux_mod_CFLAGS): Likewise.
(linux_mod_LDFLAGS): Likewise.
* DISTLIST: Added loader/i386/efi/linux.c,
loader/i386/efi/linux_normal.c and
include/grub/i386/efi/loader.h.
* loader/i386/efi/linux.c: New file.
* loader/i386/efi/linux_normal.c: Likewise.
* include/grub/i386/efi/loader.h: Likewise.
* commands/blocklist.c: New file.
* DISTLIST: Added commands/blocklist.c.
* term/efi/console.c (grub_console_highlight_color): Use a lighter
color for the background, and a daker color for the foreground.
(grub_console_checkkey): Return READ_KEY.
(grub_console_cls): Set the background to
GRUB_EFI_BACKGROUND_BLACK temporarily to clean out the screen.
* kern/efi/efi.c (grub_efi_exit_boot_services): New function.
* include/grub/i386/linux.h (struct linux_kernel_params): Fixed
the size of "padding5", "hd0_drive_info" and "hd1_drive_info".
* include/grub/efi/efi.h (grub_efi_exit_boot_services): New
prototype.
* include/grub/efi/api.h (GRUB_EFI_TEXT_ATTR): Do not shift
BG. The spec is wrong again.
* include/grub/normal.h [GRUB_UTIL] (grub_blocklist_init): New
prototype.
[GRUB_UTIL] (grub_blocklist_fini): Likewise.
* conf/i386-pc.rmk (grub_emu_SOURCES): Added
commands/blocklist.c.
* conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise.
* conf/common.rmk (pkgdata_MODULES): Added blocklist.mod.
(blocklist_mod_SOURCES): New variable.
(blocklist_mod_CFLAGS): Likewise.
(blocklist_mod_LDFLAGS): Likewise.
* normal/lexer.c (grub_script_yylex): Don't filter out newlines.
* normal/parser.y (commandblock): Defined as <cmd>. A subroutine
for `menuentry'.
(script): Accept leading newlines.
(newlines): New rule to describe 0 or more newlines.
(commands): Accept `command' with trailing newline. Fixed the
order in which arguments were passed to `grub_script_add_cmd'.
Accept commands separated by newlines.
(function): Changed to accept newlines.
(menuentry) Rewritten.
* normal/script.c (grub_script_create_cmdmenu): Add new entries in
front of the list, instead of to the end.
* kern/i386/pc/startup.S: Include grub/cpu/linux.h instead of
grub/machine/linux.h
* loader/i386/pc/linux.c: Likewise.
* include/grub/i386/pc/linux.h: Moved to ...
* include/grub/i386/linux.h: ... here.
* include/grub/i386/linux.h (struct linux_kernel_params): New
struct.
Add --with-platform to configure. Use pkglibdir instead of
pkgdatadir. This is reported by Roger Leigh.
* util/powerpc/ieee1275/grub-install.in (datadir): Removed.
(host_vendor): Likewise.
(host_os): Likewise.
(pkgdatadir): Likewise.
(platform): New variable.
(pkglibdir): Likewise.
Use PKGLIBDIR instead of PKGDATADIR.
* util/i386/pc/grub-install.in (datadir): Removed.
(host_vendor): Likewise.
(host_os): Likewise.
(pkgdatadir): Likewise.
(platform): New variable.
(pkglibdir): Likewise.
Use PKGLIBDIR instead of PKGDATADIR.
* util/powerpc/ieee1275/grub-mkimage.c (usage): Use GRUB_LIBDIR
instead of GRUB_DATADIR.
(main): Likewise.
* util/i386/pc/grub-mkimage.c (usage): Likewise.
(main): Likewise.
* util/i386/efi/grub-mkimage.c (usage): Likewise.
(main): Likewise.
* configure.ac (--with-platform): New option.
Use PLATFORM instead of HOST_VENDOR to specify a platform.
* Makefile.in: Include a makefile based on PLATFORM instead of
HOST_VENDOR.
(pkgdatadir): Not appended by the machine type.
(pkglibdir): Appended by the machine type.
(host_vendor): Removed.
(platform): New variable.
(BUILD_CPPFLAGS): Specify GRUB_LIBDIR instead of GRUB_DATADIR.
(install-local): Use PKGLIBDIR instead of PKGDATADIR.
(uninstall): Likewise.
Use the environment context in the menu. Remove the commands
"default" and "timeout", and use variables instead.
* normal/menu.c: Include grub/env.h.
(print_entry): Cast TITLE to silence gcc.
(get_timeout): New function.
(set_timeout): Likewise.
(get_entry_number): Likewise.
(run_menu): Use a default entry, a fallback entry and a timeout
in the environment variables "default", "fallback" and
"timeout". Also, tweak the default entry if it is not within the
current menu entries.
(grub_menu_run): Use a fallback entry in the environment variable
"fallback".
* normal/main.c (read_config_file): Do not initialize
NEWMENU->DEFAULT_ENTRY, NEWMENU->FALLBACK_ENTRY or
NEWMENU->TIMEOUT.
(grub_normal_execute): Use a data slot to store the menu.
* include/grub/normal.h (struct grub_menu): Removed default_entry,
fallback_entry and timeout.
(struct grub_menu_list): Removed.
(grub_menu_list_t): Likewise.
(struct grub_context): Likewise.
(grub_context_t): Likewise.
(grub_context_get): Likewise.
(grub_context_get_current_menu): Likewise.
(grub_context_push_menu): Likewise.
(grub_context_pop_menu): Likewise.
(grub_default_init): Likewise.
(grub_default_fini): Likewise.
(grub_timeout_init): Likewise.
(grub_timeout_fini): Likewise.
* conf/sparc64-ieee1275.rmk (pkgdata_MODULES): Removed default.mod
and timeout.mod.
(normal_mod_SOURCES): Removed normal/context.c.
* conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Removed
commands/default.c, commands/timeout.c and normal/context.c.
(normal_mod_SOURCES): Removed normal/context.c.
* conf/i386-pc.rmk (grub_emu_SOURCES): Removed commands/default.c,
commands/timeout.c and normal/context.c.
(normal_mod_SOURCES): Removed normal/context.c.
* conf/i386-efi.rmk (grub_emu_SOURCES): Removed
commands/default.c, commands/timeout.c and normal/context.c.
(normal_mod_SOURCES): Removed normal/context.c.
* conf/common.rmk (pkgdata_MODULES): Removed default.mod and
timeout.mod.
(default_mod_SOURCES): Removed.
(default_mod_CFLAGS): Likewise.
(default_mod_LDFLAGS): Likewise.
(timeout_mod_SOURCES): Removed.
(timeout_mod_CFLAGS): Likewise.
(timeout_mod_LDFLAGS): Likewise.
* DISTLIST: Removed commands/default.c, commands/timeout.c and
normal/context.c.
* commands/default.c: Removed.
* commands/timeout.c: Likewise.
* normal/context.c: Likewise.
* kern/env.c (struct grub_env_context): Removed "sorted". Renamed
"next" to "prev" for readability.
(struct grub_env_sorted_var): New struct.
(grub_env_context): Renamed to ...
(initial_context): ... this.
(grub_env_var_context): Renamed to ...
(current_context): ... this.
(grub_env_find): Look only at CURRENT_CONTEXT.
(grub_env_context_open): Rewritten to copy exported variables from
previous context.
(grub_env_context_close): Rewritten according to the new
scheme. Also, add an assertion to prevent the initial context from
removed.
(grub_env_insert): Removed the code for the sorted list.
(grub_env_remove): Likewise.
(grub_env_export): Simply mark the variable with
GRUB_ENV_VAR_GLOBAL.
(grub_env_set): A cosmetic change for naming consistency.
(grub_env_get): Likewise.
(grub_env_unset): Likewise.
(grub_env_iterate): Rewritten to sort variables within this
function.
(grub_register_variable_hook): Fixed for naming consistency. Call
grub_env_find again, only if NAME is not found at the first time.
(mangle_data_slot_name): New function.
(grub_env_set_data_slot): Likewise.
(grub_env_get_data_slot): Likewise.
(grub_env_unset_data_slot): Likewise.
* include/grub/env.h (grub_env_var_type): New enum.
(GRUB_ENV_VAR_LOCAL): New constant.
(GRUB_ENV_VAR_GLOBAL): Likewise.
(GRUB_ENV_VAR_DATA): Likewise.
(struct grub_env_var): Removed "sort_next" and "sort_prevp". Added
"type".
(grub_env_set): Replace VAR with NAME for consistency.
(grub_register_variable_hook): Likewise.
(grub_env_export): Specify the name of the argument.
(grub_env_set_data_slot): New prototype.
(grub_env_get_data_slot): Likewise.
(grub_env_unset_data_slot): Likewise.
