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Make /sbin/grub use a config file.

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This commit is contained in:
gord 1999-03-27 22:24:27 +00:00
parent 4cf606a18e
commit d61ce9f2a4
7 changed files with 179 additions and 43 deletions
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8
AUTHORS
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@ -4,6 +4,12 @@ VaX#n8 (real name unknown) wrote shared_src/fsys_ext2fs.c.
Heiko Schroeder rewrote shared_src/stage1.S to be more readable.
The following authors assigned copyright on their work to the Free
Software Foundation:
Gordon Matzigkeit adopted GRUB into the GNU Project. He fixed several
bugs, added symbolic link support to shared_src/fsys_ext2fs.c, and
implemented the grub configuration program.
began the implementation of /sbin/grub.
OKUJI Yoshinori contributed many bugfixes and new features, such as
working LBA support, and /sbin/grub support for configuration files.

54
ChangeLog
View file

@ -1,3 +1,57 @@
1999-03-27 Gordon Matzigkeit <gord@trick.fig.org>
* grub/main.c (usage): Display defaults for stage2 options.
* grub/asmstub.c [NO_REMAPPING_LIBC_FUNCTIONS]: Rename to
WITHOUT_LIBC_STUBS.
* grub/main.c: Likewise.
* shared_src/shared.h: Likewise.
1999-03-27 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
* grub/asmstub.c (set_attrib): Use inch and addch, instead of
chgat, because chgat doesn't work as expected.
1999-03-26 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
* grub/asmstub.c (grub_stage2) [HAVE_LIBCURSES]: Call nodelay.
(checkkey) [HAVE_LIBCURSES]: If getting an input character, then
ungetch it, because checkkey shouldn't modify the input queue.
Use file descriptors instead of file pointers to support
>4GB disks in Linux.
* grub/asmstub.c (grub_stage2): Call close instead of fclose.
(get_diskinfo): Call open instead of fopen.
(biosdisk) [__linux__]: Use _llseek instead of lseek.
(biosdisk): Call read instead of fread.
Add options so that the user can specify the config file.
* grub/Makefile.am (CPPFLAGS): Use -fwritable-strings, because
grub assumes that all strings resides at the data section.
* grub/main.c: Define NO_REMAPPING_LIBC_FUNCTIONS before including
shared.h.
(OPT_CONFIG_FILE): New macro.
(OPT_INSTALL_PARTITION): Likewise.
(OPT_BOOT_DRIVE): Likewise.
(longopts): Add new options, config-file, install-partition and
boot-drive.
(usage): Add the documentation for them.
(main): Add handling code for OPT_CONFIG_FILE, OPT_INSTALL_PARTITION
and OPT_BOOT_DRIVE.
* grub/asmstub.c: Define NO_REMAPPING_LIBC_FUNCTIONS before including
shared.h.
(config_file): Make it char * instead of char [].
(getrtsecs): Return current time instead of 0xff.
* shared_src/shared.h [NO_REMAPPING_LIBC_FUNCTIONS]: Don't define
libc-API-compatible function names.
(config_file): Change the prototype from char [] to char *.
(grub_putchar): Renamed from putchar.
1999-03-25 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
* char_io.c (get_cmdline): Call cl_setcpos even if lpos == llen,

2
grub/Makefile.am
View file

@ -2,7 +2,7 @@ EXTRA_PROGRAMS = grub
sbin_PROGRAMS = $(sbingrub)
CLEANFILES = $(EXTRA_PROGRAMS)
COMPILE = $(CC) -DGRUB_UTIL=1 $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
COMPILE = $(CC) -DGRUB_UTIL=1 -fwritable-strings $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
INCLUDES = -I$(top_srcdir)/shared_src
grub_SOURCES = main.c asmstub.c

2
grub/Makefile.in
View file

@ -74,7 +74,7 @@ EXTRA_PROGRAMS = grub
sbin_PROGRAMS = $(sbingrub)
CLEANFILES = $(EXTRA_PROGRAMS)
COMPILE = $(CC) -DGRUB_UTIL=1 $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
COMPILE = $(CC) -DGRUB_UTIL=1 -fwritable-strings $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
INCLUDES = -I$(top_srcdir)/shared_src
grub_SOURCES = main.c asmstub.c

81
grub/asmstub.c
View file

@ -18,30 +18,31 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Try to use glibc's transparant LFS support. */
#define _LARGEFILE_SOURCE 1
/* Simulator entry point. */
int grub_stage2 (void);
#include "shared.h"
/* We want to prevent any circularararity in our stubs, as well as
libc name clashes. */
#undef NULL
#undef bcopy
#undef bzero
#undef getc
#undef isspace
#undef printf
#undef putchar
#undef strncat
#undef strstr
#undef tolower
#define WITHOUT_LIBC_STUBS 1
#include "shared.h"
#include <stdlib.h>
#include <assert.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>
#ifdef __linux__
# include <sys/ioctl.h> /* ioctl */
# include <linux/hdreg.h> /* HDIO_GETGEO */
/* FIXME: only include if libc doesn't have large file support. */
# include <unistd.h>
# include <linux/unistd.h> /* _llseek */
#endif /* __linux__ */
/* Simulated memory sizes. */
@ -59,7 +60,7 @@ int grub_stage2 (void);
unsigned long install_partition = 0x20000;
unsigned long boot_drive = 0;
char version_string[] = "0.5";
char config_file[] = "/boot/grub/menu.lst";
char *config_file = "/boot/grub/menu.lst";
/* Emulation requirements. */
char *grub_scratch_mem = 0;
@ -128,6 +129,7 @@ grub_stage2 (void)
nonl ();
scrollok (stdscr, TRUE);
keypad (stdscr, TRUE);
nodelay (stdscr, TRUE);
#endif
/* Set our stack, and go for it. */
@ -138,10 +140,10 @@ grub_stage2 (void)
endwin ();
#endif
/* Close off the file pointers we used. */
/* Close off the file descriptors we used. */
for (i = 0; i < NUM_DISKS; i ++)
if (disks[i].flags)
fclose ((FILE *) disks[i].flags);
close ((FILE *) disks[i].flags);
/* Release memory. */
free (disks);
@ -275,7 +277,8 @@ get_mmap_entry (struct mmar_desc *desc, int cont)
int
getrtsecs (void)
{
return 0xff;
/* FIXME: exact value is not important, so just return time_t for now. */
return time (0);
}
@ -346,9 +349,15 @@ int
checkkey (void)
{
#ifdef HAVE_LIBCURSES
return getch ();
int c;
c = getch ();
/* If C is not ERR, then put it back in the input queue. */
if (c != ERR)
ungetch (c); /* FIXME: ncurses-1.9.9g ungetch is buggy. */
return c;
#else
return getchar ();
/* Just pretend they hit the space bar.
return ' ';
#endif
}
@ -358,8 +367,14 @@ void
set_attrib (int attr)
{
#ifdef HAVE_LIBCURSES
/* FIXME: I don't know why, but chgat doesn't work as expected, so
use this dirty way... - okuji */
chtype ch = inch ();
addch ((ch & A_CHARTEXT) | attr);
# if 0
chgat (1, attr, 0, NULL);
# endif
#endif
}
@ -370,7 +385,7 @@ get_diskinfo (int drive, struct geometry *geometry)
{
/* FIXME: this function is truly horrid. We try opening the device,
then severely abuse the GEOMETRY->flags field to pass a file
pointer to biosdisk. Thank God nobody's looking at this comment,
descriptor to biosdisk. Thank God nobody's looking at this comment,
or my reputation would be ruined. --Gord */
/* See if we have a cached device. */
@ -412,16 +427,15 @@ get_diskinfo (int drive, struct geometry *geometry)
devname[8] = '\0';
/* Open read/write, or read-only if that failed. */
disks[drive].flags = (int) fopen (devname, "r+");
disks[drive].flags = open (devname, O_RDWR);
if (! disks[drive].flags)
disks[drive].flags = (int) fopen (devname, "r");
disks[drive].flags = open (devname, O_RDONLY);
if (disks[drive].flags)
{
#ifdef __linux__
struct hd_geometry hdg;
if (! ioctl (fileno ((FILE *) disks[drive].flags),
HDIO_GETGEO, &hdg))
if (! ioctl (disks[drive].flags, HDIO_GETGEO, &hdg))
{
/* Got the geometry, so save it. */
disks[drive].cylinders = hdg.cylinders;
@ -462,19 +476,32 @@ biosdisk (int subfunc, int drive, struct geometry *geometry,
int sector, int nsec, int segment)
{
char *buf;
FILE *fp;
int fd = geometry->flags;
/* Get the file pointer from the geometry, and make sure it matches. */
fp = (FILE *) geometry->flags;
if (! fp || fp != (FILE *) disks[drive].flags)
if (fd == -1 || fd != disks[drive].flags)
return BIOSDISK_ERROR_GEOMETRY;
/* Seek to the specified location. */
if (fseek (fp, sector * SECTOR_SIZE, SEEK_SET))
#ifdef __linux__
/* FIXME: only use this section if libc doesn't have large file support */
{
loff_t offset, result;
_syscall5 (int, _llseek, uint, fd, ulong, hi, ulong, lo,
loff_t *, res, uint, wh);
offset = (loff_t) sector * (loff_t) SECTOR_SIZE;
if (_llseek (fd, offset >> 32, offset & 0xffffffff, &result, SEEK_SET))
return -1;
}
#else
if (lseek (fd, sector * SECTOR_SIZE, SEEK_SET))
return -1;
#endif /* __linux__ */
buf = (char *) (segment << 4);
if (fread (buf, nsec * SECTOR_SIZE, 1, fp) != 1)
/* FIXME: handle EINTR */
if (read (fd, buf, nsec * SECTOR_SIZE, fp) != nsec * SECTOR_SIZE)
return -1;
return 0;
}

59
grub/main.c
View file

@ -24,12 +24,24 @@ int grub_stage2 (void);
#include <stdio.h>
#include <getopt.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#define WITHOUT_LIBC_STUBS 1
#include "shared.h"
char *program_name = 0;
static int default_boot_drive;
static int default_install_partition;
static char *default_config_file;
#define OPT_HELP -2
#define OPT_VERSION -3
#define OPT_HOLD -4
#define OPT_CONFIG_FILE -5
#define OPT_INSTALL_PARTITION -6
#define OPT_BOOT_DRIVE -7
#define OPTSTRING ""
static struct option longopts[] =
@ -37,6 +49,9 @@ static struct option longopts[] =
{"help", no_argument, 0, OPT_HELP},
{"version", no_argument, 0, OPT_VERSION},
{"hold", no_argument, 0, OPT_HOLD},
{"config-file", required_argument, 0, OPT_CONFIG_FILE},
{"install-partition", required_argument, 0, OPT_INSTALL_PARTITION},
{"boot-drive", required_argument, 0, OPT_BOOT_DRIVE},
{0},
};
@ -53,11 +68,15 @@ Usage: %s [OPTION]...\n\
\n\
Enter the GRand Unified Bootloader command shell.\n\
\n\
--boot-drive=DRIVE specify stage2 boot_drive [default=0x%x]\n\
--config-file=FILE specify stage2 config_file [default=%s]\n\
--help display this message and exit\n\
--hold wait forever so that a debugger may be attached\n\
--hold wait until a debugger will attach\n\
--install-partition=PAR specify stage2 install_partition [default=0x%x]\n\
--version print version information and exit\n\
",
program_name);
program_name, default_boot_drive, default_config_file,
default_install_partition);
exit (status);
}
@ -69,6 +88,12 @@ main (int argc, char **argv)
int c;
int hold = 0;
program_name = argv[0];
default_boot_drive = boot_drive;
default_install_partition = install_partition;
if (config_file)
default_config_file = config_file;
else
default_config_file = "NONE";
/* Parse command-line options. */
do
@ -80,10 +105,6 @@ main (int argc, char **argv)
/* Fall through the bottom of the loop. */
break;
case OPT_HOLD:
hold = 1;
break;
case OPT_HELP:
usage (0);
break;
@ -93,6 +114,32 @@ main (int argc, char **argv)
exit (0);
break;
case OPT_HOLD:
hold = 1;
break;
case OPT_CONFIG_FILE:
config_file = strdup (optarg);
break;
case OPT_INSTALL_PARTITION:
install_partition = strtoul (optarg, 0, 16);
if (install_partition == ULONG_MAX)
{
perror ("strtoul");
exit (1);
}
break;
case OPT_BOOT_DRIVE:
boot_drive = strtoul (optarg, 0, 0);
if (boot_drive == ULONG_MAX)
{
perror ("strtoul");
exit (1);
}
break;
default:
usage (1);
}

10
shared_src/shared.h
View file

@ -201,8 +201,9 @@ extern char *grub_scratch_mem;
#define DISP_UP 0x18
#define DISP_DOWN 0x19
/* Remap some libc-API-compatible function names so that we can use
them alongside their libc counterparts. */
/* Remap some libc-API-compatible function names so that we prevent
circularararity. */
#ifndef WITHOUT_LIBC_STUBS
#define bcopy grub_bcopy
#define bzero grub_bzero
#define isspace grub_isspace
@ -212,6 +213,7 @@ extern char *grub_scratch_mem;
#define strncat grub_strncat
#define strstr grub_strstr
#define tolower grub_tolower
#endif /* WITHOUT_LIBC_STUBS */
#ifndef ASM_FILE
@ -276,7 +278,7 @@ typedef enum
extern unsigned long install_partition;
extern unsigned long boot_drive;
extern char version_string[];
extern char config_file[];
extern char *config_file;
#ifndef STAGE1_5
/* GUI interface variables. */
@ -413,7 +415,7 @@ void gotoxy (int x, int y);
/* Displays an ASCII character. IBM displays will translate some
characters to special graphical ones (see the DISP_* constants). */
void putchar (int c);
void grub_putchar (int c);
/* Wait for a keypress, and return its packed BIOS/ASCII key code.
Use ASCII_CHAR(ret) to extract the ASCII code. */