changelog

Linux启动程序grub的源码分析与实现；

2005-05-08  Yoshinori K. Okuji  <[e-mail]>

	* configure.ac (AC_INIT): Upgraded to 0.97.

	* compile: Copied from Automake 1.9.4.
	* config.guess: Likewise.
	* config.sub: Likewise.
	* depcomp: Likewise.
	* install-sh: Likewise.
	* missing: Likewise.
	* mkinstalldirs: Likewise.
	* mdate-sh: Likewise.
	* docs/texinfo.tex: Likewise.

2005-05-08  Yoshinori K. Okuji  <[e-mail]>

	* stage2/fsys_xfs.c (next_dentry): Use arrays of arrays instead of
	arrays of pointers for USUAL, to avoid read-only strings. Reported
	by Sven Wegener <[e-mail]>.

2005-03-28  Yoshinori K. Okuji  <[e-mail]>

	* lib/device.c (get_drive_geometry): Use ST.ST_SIZE instead of
	ST.ST_BLOCKS to get the total number of sectors, because st_blocks
	is not the same if it is a sparse file.

2005-03-19  Yoshinori K. Okuji  <[e-mail]>

	* stage2/stage2.c (cmain): Initialize DEFAULT_FILE to an empty
	string. Reported by NATORI Shin <[e-mail]>.

2005-03-15  Yoshinori K. Okuji  <[e-mail]>

	* stage2/fsys_fat.c (fat_mount): Ignore the 3rd bit of a media
	descriptor, because some BIOSes overwrite this value, according
	to the storage mode (e.g. USB Floppy or USB HDD).

2005-02-16  Yoshinori K. Okuji  <[e-mail]>

	* grub/asmstub.c (grub_stage2): Remove the attribute `volatile'
	from doit. I hope this change is safe for all compilers.

2005-02-15  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c (install_func): If DEST_DRIVE is a hard
	disk, enable the workaround in Stage 1 by replacing the jmp
	with double nop's.

	* stage1/stage1.h (STAGE1_BOOT_DRIVE_CHECK): New macro.
	(STAGE1_BOOT_DRIVE_MASK): Removed.

	* stage1/stage1.S (boot_drive_check): New label. This implements
	a different workaround for buggy BIOSes which don't pass boot
	drive correctly. This is effective for BIOSes which pass a value
	without the seventh bit (0x80).
	(boot_drive_mask): Removed.

2005-02-03  Yoshinori K. Okuji  <[e-mail]>

	* grub/asmstub.c (console_current_color): Make it global as
	declared.
	(grub_stage2): Tweak the declaration and the definition of the
	nested function doit.

2005-02-02  Yoshinori K. Okuji  <[e-mail]>

	* stage2/smp-imps.h (imps_any_new_apics): Removed.
	(imps_enabled): Likewise.
	(imps_lapic_addr): Likewise.
	(imps_num_cpus): Likewise.
	(imps_cpu_apic_map): Likewise.
	(imps_apic_cpu_map): Likewise.

	* stage2/Makefile.am (libgrub_a_CFLAGS): Remove
	-fwritable-strings. Not required for the grub shell actually.

	* grub/Makefile.am (AM_CFLAGS): Likewise.

2005-02-01  Yoshinori K. Okuji  <[e-mail]>

	* grub/asmstub.c (grub_stage2): Use auto instead of static for
	nested functions.

	* stage2/char_io.c (memcheck) [GRUB_UTIL]: Likewise.

	* stage2/builtins.c (blocklist_func): Likewise.
	(color_func): Likewise.
	(install_func): Likewise.
	(setkey_func): Likewise.

	* lib/device.c (read_device_map): Likewise.

2005-01-30  Yoshinori K. Okuji  <[e-mail]>

        * configure.ac (AC_INIT): Upgraded to 0.96.

2004-10-11 Jason Thomas <[e-mail]>

	Patch from Stefanus Du Toit  <[e-mail]>
	* docs/kernel.c.texi (cmain): Incremement mod by one, instead of
	sizeof(module_t), since it's already a pointer of type module_t.
	* docs/kernel.c (cmain): Do the same.

2004-09-20  Yoshinori K. Okuji  <[e-mail]>

	* docs/internals.texi (Internals): Changed to an appendix.

	* docs/grub.texi (@setchapternewpage): Changed to odd from off.
	(@contents): Moved to the beginning.
	(Future): Changed to an appendix.

2004-08-17  Yoshinori K. Okuji  <[e-mail]>

	* stage2/cmdline.c (run_script): Fix a reversed conditional.
	Reported by Alban Crequy <[e-mail]>.

2004-08-07  Jason Thomas  <[e-mail]>
	
	From Michael Hohnbaum <[e-mail]>:
	* stage2/fsys_ext2fs.c (ext2fs_read): Handle sparse files.

2004-07-24  Yoshinori K. Okuji  <[e-mail]>

	* stage2/stage2.c (cmain): Terminate DEFAULT_FILE with NUL
	correctly. Reported by Alban Crequy <[e-mail]>.

2004-07-21  Robert Millan  <[e-mail]>

	Patch from David Weinehall <[e-mail]>
	* util/mkbimage: Fix XSI-isms (for supporting POSIX-only shells).

2004-07-20  Robert Millan  <[e-mail]>

	* util/grub-install.in: Detect GNU/k*BSD systems as well.

2004-07-16  Yoshinori K. Okuji  <[e-mail]>

	* util/grub-install.in (convert): Fix the sed statement for
	Linux. The expression was ambigious in some cases.

2004-06-29  Robert Millan  <[e-mail]>

	* util/grub-set-default.in: Fix minor syntax error (non-escaped
	characters).

2004-06-24  Robert Millan  <[e-mail]>

	Fixes for FHS compliance. (/usr/share is for arch-independant data)
	* stage1/Makefile.am: Move stage files to pkglibdir.
	* stage2/Makefile.am: Likewise.
	* docs/grub.texi: s,/usr/share,/usr/lib,g.
	* util/grub-image.in: Look for stage files in pkglibdir.
	* util/grub-install.in: Likewise.

	* util/grub-install.in: Improve usage message.

2004-06-20  Yoshinori K. Okuji  <[e-mail]>

	This is a big change on saving a default entry. This change
	makes it possible to set up a quite robust system using GRUB.
	Now we do not use the second sector of Stage 2 to store an
	entry number but use the file /boot/grub/default. This file
	must be generated by grub-set-default, although this file is
	plain-text.
	
	* util/grub-set-default.in: New file.
	
	* util/grub-install.in (grub_set_default): New variable.
	Use /grub instead of /boot/grub on OpenBSD as well as NetBSD.
	Run grub-set-default to make a default file.

	* util/Makefile.am (sbin_SCRIPTS): Added grub-set-default.

	* stage2/stage2.c (run_menu): Change the fallback handling to
	support multiple fallback entries.
	(cmain): Likewise. Also, get a saved entry from a default file
	if possible, before reading a config file.

	* stage2/shared.h (DEFAULT_FILE_BUF): New macro.
	(DEFAULT_FILE_BUFLEN): Likewise.
	(CMDLINE_BUF): Set to DEFAULT_FILE_BUF + DEFAULT_FILE_BUFLEN.
	(MENU_BUFLEN): Set to 0x8000 + PASSWORD_BUF - MENU_BUF.
	(fallback_entry): Removed.
	(fallback_entries): Declared.
	(fallback_entryno): Likewise.
	(MAX_FALLBACK_ENTRIES): New macro.

	* stage2/cmdline.c (run_script): Use FALLBACK_ENTRYNO instead of
	FALLBACK_ENTRY.

	* stage2/builtins.c (fallback_entry): Removed.
	(fallback_entryno): New variable.
	(fallback_entries): Likewise.
	(init_config): Initialize FALLBACK_ENTRYNO and FALLBACK_ENTRIES.
	(fallback_func): Rewritten completely.
	(savedefault_func): Likewise.

	* docs/grub.texi (grub-set-default): New direntry.
	(Installation): Describe grub-set-default for manual
	installations.
	(Making your system robust): New section.
	(Booting once-only): New subsection.
	(Booting fallback systems): Likewise.
	(fallback): Describe multiple fallback entries.
	(savedefault): Describe an optional argument.
	(Invoking grub-set-default): New chapter.
	(Future): Replaced with a description about GRUB 2.

	* configure.ac (AC_CONFIG_FILES): Added util/grub-set-default.

2004-06-19  Yoshinori K. Okuji  <[e-mail]>

	* stage2/ufs2.h (int8_t): Renamed to ...
	(grub_uint8_t): ... this.
	(int16_t): Renamed to ...
	(grub_int16_t): ... this.
	(int32_t): Renamed to ...
	(grub_int32_t): ... this.
	(int64_t): Renamed to ...
	(grub_int64_t): ... this.
	(uint8_t): Renamed to ...
	(grub_uint8_t): ... this.
	(uint16_t): Renamed to ...
	(grub_uint16_t): ... this.
	(uint32_t): Renamed to ...
	(grub_uint32_t): ... this.
	(uint64_t): Renamed to ...
	(grub_uint64_t): ... this.
	(u_char): Renamed to ...
	(grub_u_char): ... this.
	(u_int): Renamed to ...
	(grub_u_int): ... this.
	(u_int8_t): Renamed to ...
	(grub_u_int8_t): ... this.
	(u_int16_t): Renamed to ...
	(grub_u_int16_t): ... this.
	(u_int32_t): Renamed to ...
	(grub_u_int32_t): ... this.
	(u_int64_t): Renamed to ...
	(grub_u_int64_t): ... this.
	(ino_t): Renamed to ...
	(grub_ino_t): ... this.
	All callers are changed.

2004-06-14  Jeroen Dekkers  <[e-mail]>

	* stage2/ufs2.h (__uint8_t): Remove.
	(__uint16_t): Likewise.
	(__uint32_t): Likewise.
	(__uint64_t): Likewise.
	(ino_t): Typedef to uint32_t.

2004-06-13  Yoshinori K. Okuji  <[e-mail]>

	* stage2/Makefile.am (noinst_HEADERS): Added ufs2.h.
	
2004-06-13  Yoshinori K. Okuji  <[e-mail]>

	* configure.ac (AC_INIT): Upgraded to 0.95.

2004-05-23  Yoshinori K. Okuji  <[e-mail]>

	* stage2/char_io.c (grub_isspace): Use a switch sentense instead
	of an if sentense, because that reduces the size.

	* lib/device.c (read_device_map): Change the max number of DRIVE
	to 127 from 8. This was too strict.

	* stage2/asm.S (stop_floppy): Call pusha and popa outside the
	block of real mode code. Reported by Guillem Jover
	<[e-mail]>.

2004-05-20  Damian Ivereigh  <[e-mail]>

	* netboot/main.c: Fixed bootp only code so that options
	work properly. This fix is obvious when compared with the
	DHCP code.

2004-05-17  Pavel Roskin  <[e-mail]>

	* stage2/char_io.c (safe_parse_maxint): Disable for stage 1.5.
	(grub_tolower): Disable for stage 1.5 except fat_stage1_5.
	(grub_memcmp): Disable for stage 1.5 except iso9660_stage1_5.

2004-05-14  Yoshinori K. Okuji  <[e-mail]>

	From Sergey Matveychuk <[e-mail]>:
	* stage2/size_test: Added a check for ufs2_stage1_5.

	* stage2/shared.h (STAGE2_ID_UFS2_STAGE1_5): New macro.
	[FSYS_UFS2] (STAGE2_ID): Set to STAGE2_ID_UFS2_STAGE1_5.

	* stage2/filesys.h (FSYS_UFS2_NUM): New macro.
	[FSYS_UFS2] (ufs2_mount): New prototype.
	[FSYS_UFS2] (ufs2_read): Likewise.
	[FSYS_UFS2] (ufs2_dir): Likewise.
	[FSYS_UFS2] (ufs2_embed): Likewise.
	(NUM_FSYS): Added FSYS_UFS2_NUM.

	* stage2/disk_io.c (fsys_table): Added an ufs2 entry.

	* stage2/builtins.c (setup_func): Added ufs2 into the
	STAGE1_5_MAP.

	* stage2/Makefile.am (libgrub_a_SOURCES): Added fsys_ufs2.c.
	(libgrub_a_CFLAGS): Added -DFSYS_UFS2=1.
	(pkgdata_DATA): Added ufs2_stage1_5.
	(noinst_PROGRAMS): Added ufs2_stage1_5.exec.
	(ufs2_stage1_5_exec_SOURCES): New variable.
	(ufs2_stage1_5_exec_CFLAGS): Likewise.
	(ufs2_stage1_5_exec_CCASFLAGS): Likewise.
	(ufs2_stage1_5_exec_LDFLAGS): Likewise.

	* grub/Makefile.am (AM_CPPFLAGS): Added -DFSYS_ISO9660=1,
	-DFSYS_JFS=1, -DFSYS_REISERFS=1, -DFSYS_UFS2=1, -DFSYS_VSTAFS=1,
	-DFSYS_XFS=1, and -DUSE_MD5_PASSWORDS=1.

	* configure.ac (--disable-ufs2): New option.

	* stage2/fsys_ufs2.c: New file.
	* stage2/ufs2.h: Likewise.

2004-05-10  Robert Millan  <[e-mail]>

	* lib/device.c: Mangle __FreeBSD_* macro usage to support
	kFreeBSD-based non-FreeBSD systems (i.e. GNU/kFreeBSD).

	Implement runtime detection of version of kFreeBSD. Now if
	we build against kFreeBSD 5.x headers the GRUB shell will work on
	both 4.x and 5.x.

	Replace `u_int_t' types with portable `unsigned int' and old
	reference to `geometry' structure to new `geom' one.

	* docs/menu.lst: Split GNU/kFreeBSD and GNU/kNetBSD as separate
	options than FreeBSD and NetBSD, respectively. There are minor
	differences now (different paths).

2004-05-03  Pavel Roskin  <[e-mail]>

	* stage2/char_io.c (convert_to_ascii): Remove "%b" support.
	It's non-standard and is not used anymore.
	(grub_printf): Likewise.

2004-04-29  Robert Millan  <[e-mail]>

	From Yann Dirson  <[e-mail]>:
	* util/mkbimage: Misc syntax fixes.

2004-04-29  Jeroen Dekkers  <[e-mail]>

	* stage2/char_io.c (grub_memcmp): Define for stage1.5 too.

	* stage2/fsys_iso9660.c (iso9660_mount): Use memcmp() instead of
	__builtin_memcmp().
	(iso9660_dir): Likewise.

2004-04-26  Christian Jones  <[e-mail]>

	* docs/grub.texi (Making a GRUB bootable CD-ROM): minor edits,
	including a few compatibility notes and a change to
	-boot-load-size 4 for the mkisofs command.

2004-04-22  Jeroen Dekkers  <[e-mail]>

	* Makefile.am (AUTOMAKE_OPTIONS): Add "gnu".
	* configure.ac: Update to work with automake 1.8, quote all
	AC_DEFUN's correctly and provide descriptions for AC_DEFINE's.
	* acinclude.m4: Likewise.
	* acconfig.h: Removed.
	
	* stage1/Makefile.am (.exec): Use suffix rules instead of pattern
	rules.
	* stage2/Makefile.am (.exec): Likewise.

2004-04-18  Yoshinori K. Okuji  <[e-mail]>

	* docs/grub.texi (Making a GRUB bootable CD-ROM): New section.

	* stage2/disk_io.c (set_device): Use CH instead of *DEVICE to
	test the first character of DEVICE, because DEVICE is