2004-12-04 Marco Gerards <metgerards@student.han.nl>

Modulize the partition map support and add support for the amiga
	partition map.

	* commands/ls.c: Include <grub/partition.h> instead of
	<grub/machine/partition.h>.
	* kern/disk.c: Likewise.
	* kern/rescue.c: Likewise.
	* loader/i386/pc/chainloader.c: Likewise.
	* normal/cmdline.c: Likewise.
	* kern/powerpc/ieee1275/init.c: Likewise.
	(grub_machine_init): Call `grub_pc_partition_map_init',
	`grub_amiga_partition_map_init' and
	`grub_apple_partition_map_init'.
	* conf/i386-pc.rmk (kernel_img_SOURCES): Remove
	`disk/i386/pc/partition.c'.  Add `kern/partition.c'.
	(kernel_img_HEADERS): Remove `machine/partition.h'.  Add
	`partition.h' and `pc_partition.h'.
	(grub_setup_SOURCES): Remove
	`disk/i386/pc/partition.c'.  Add `kern/partition.c',
	`partmap/amiga.c', `partmap/apple.c' and `partmap/pc.c'.
	(grub_emu_SOURCES): Likewise.
	(pkgdata_MODULES): Add `amiga.mod', `apple.mod' and `pc.mod'.
	(amiga_mod_SOURCES, amiga_mod_CFLAGS, apple_mod_SOURCES)
	(apple_mod_CFLAGS, pc_mod_SOURCES, pc_mod_CFLAGS): New variables.
	* conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Remove
	`disk/powerpc/ieee1275/partition.c'.  Add `kern/partition.c',
	`partmap/amiga.c', `partmap/apple.c' and `partmap/pc.c'.
	(grubof_SOURCES): Likewise.
	* disk/i386/pc/partition.c: File removed.
	* disk/powerpc/ieee1275/partition.c: Likewise.
	* include/grub/powerpc/ieee1275/partition.h: Likewise.
	* include/grub/i386/pc/partition.h: Likewise.
	* kern/partition.c: New file.
	* partmap/amiga.c: Likewise.
	* partmap/apple.c: Likewise.
	* partmap/pc.c: Likewise.
	* include/grub/partition.h: Likewise..
	* include/grub/pc_partition.h: Likewise.
	* util/grub-emu.c: Include <grub/partition.h> instead of
	<grub/machine/partition.h>.
	(main): Call `grub_pc_partition_map_init',
	`grub_amiga_partition_map_init' and
	`grub_apple_partition_map_init' and deinitialize afterwards.
	* util/i386/pc/biosdisk.c: Include `#include
	<grub/partition.h>' and `include <grub/pc_partition.h>' instead of
	`<grub/machine/partition.h>'.
	* util/i386/pc/grub-setup.c: Likewise.
	* util/i386/pc/biosdisk.c: Likewise.
	(grub_util_biosdisk_get_grub_dev): Only access the PC specific
	partition information in case of a PC partition.
	* util/i386/pc/grub-setup.c: Include `#include
	<grub/partition.h>' and `include <grub/pc_partition.h>' instead of
	`<grub/machine/partition.h>'.
	(setup): Only access the PC specific partition information in case
	of a PC partition.
This commit is contained in:
marco_g 2004-12-04 18:45:46 +00:00
parent 0ef4ced959
commit 3f1578fe4a
23 changed files with 1405 additions and 638 deletions

229
partmap/amiga.c Normal file
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@ -0,0 +1,229 @@
/* amiga.c - Read amiga partition tables (RDB). */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2004 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/disk.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/partition.h>
#include <grub/dl.h>
struct grub_amiga_rdsk
{
/* "RDSK". */
grub_uint8_t magic[4];
grub_uint32_t size;
grub_int32_t checksum;
grub_uint32_t scsihost;
grub_uint32_t blksz;
grub_uint32_t flags;
grub_uint32_t badblcklst;
grub_uint32_t partitionlst;
grub_uint32_t fslst;
/* The other information is not important for us. */
} __attribute__ ((packed));
struct grub_amiga_partition
{
/* "PART". */
grub_uint8_t magic[4];
grub_int32_t size;
grub_int32_t checksum;
grub_uint32_t scsihost;
grub_uint32_t next;
grub_uint32_t flags;
grub_uint32_t unused1[2];
grub_uint32_t devflags;
grub_uint8_t namelen;
grub_uint8_t name[31];
grub_uint32_t unused2[15];
grub_uint32_t unused3[3];
grub_uint32_t heads;
grub_uint32_t unused4;
grub_uint32_t block_per_track;
grub_uint32_t unused5[3];
grub_uint32_t lowcyl;
grub_uint32_t highcyl;
grub_uint32_t firstcyl;
} __attribute__ ((packed));
static struct grub_partition_map grub_amiga_partition_map;
#ifndef GRUB_UTIL
static grub_dl_t my_mod;
#endif
static grub_err_t
amiga_partition_map_iterate (grub_disk_t disk,
int (*hook) (const grub_partition_t partition))
{
struct grub_partition part;
struct grub_amiga_rdsk rdsk;
struct grub_disk raw;
int partno = 0;
int next = -1;
int pos;
/* Enforce raw disk access. */
raw = *disk;
raw.partition = 0;
/* The RDSK block is one of the first 15 blocks. */
for (pos = 0; pos < 15; pos++)
{
/* Read the RDSK block which is a descriptor for the entire disk. */
if (grub_disk_read (&raw, pos, 0,
sizeof (rdsk), (char *) &rdsk))
return grub_errno;
if (!grub_strcmp (rdsk.magic, "RDSK"))
{
/* Found the first PART block. */
next = grub_be_to_cpu32 (rdsk.partitionlst);
break;
}
}
/* The end of the partition list is marked using "-1". */
while (next != -1)
{
struct grub_amiga_partition apart;
/* Read the RDSK block which is a descriptor for the entire disk. */
if (grub_disk_read (&raw, next, 0,
sizeof (apart), (char *) &apart))
return grub_errno;
/* Calculate the first block and the size of the partition. */
part.start = (grub_be_to_cpu32 (apart.lowcyl)
* grub_be_to_cpu32 (apart.heads)
* grub_be_to_cpu32 (apart.block_per_track));
part.len = ((grub_be_to_cpu32 (apart.highcyl)
- grub_be_to_cpu32 (apart.lowcyl) + 1)
* grub_be_to_cpu32 (apart.heads)
* grub_be_to_cpu32 (apart.block_per_track));
part.offset = next * 512;
part.index = partno;
part.partmap = &grub_amiga_partition_map;
if (hook (&part))
return grub_errno;
next = grub_be_to_cpu32 (apart.next);
partno++;
}
return 0;
}
static grub_partition_t
amiga_partition_map_probe (grub_disk_t disk, const char *str)
{
grub_partition_t p = 0;
int partnum = 0;
char *s = (char *) str;
auto int find_func (const grub_partition_t partition);
int find_func (const grub_partition_t partition)
{
if (partnum == partition->index)
{
p = (grub_partition_t) grub_malloc (sizeof (*p));
if (! p)
return 1;
grub_memcpy (p, partition, sizeof (*p));
return 1;
}
return 0;
}
/* Get the partition number. */
partnum = grub_strtoul (s, 0, 10);
if (grub_errno)
{
grub_error (GRUB_ERR_BAD_FILENAME, "invalid partition");
return 0;
}
if (amiga_partition_map_iterate (disk, find_func))
goto fail;
return p;
fail:
grub_free (p);
return 0;
}
static char *
amiga_partition_map_get_name (const grub_partition_t p)
{
char *name;
name = grub_malloc (13);
if (! name)
return 0;
grub_sprintf (name, "%d", p->index);
return name;
}
/* Partition map type. */
static struct grub_partition_map grub_amiga_partition_map =
{
.name = "amiga_partition_map",
.iterate = amiga_partition_map_iterate,
.probe = amiga_partition_map_probe,
.get_name = amiga_partition_map_get_name
};
#ifdef GRUB_UTIL
void
grub_amiga_partition_map_init (void)
{
grub_partition_map_register (&grub_amiga_partition_map);
}
void
grub_amiga_partition_map_fini (void)
{
grub_partition_map_unregister (&grub_amiga_partition_map);
}
#else
GRUB_MOD_INIT
{
grub_partition_map_register (&grub_amiga_partition_map);
my_mod = mod;
}
GRUB_MOD_FINI
{
grub_partition_map_unregister (&grub_amiga_partition_map);
}
#endif

231
partmap/apple.c Normal file
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@ -0,0 +1,231 @@
/* apple.c - Read macintosh partition tables. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2004 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/disk.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/partition.h>
#define GRUB_APPLE_PART_MAGIC 0x504D
struct grub_apple_part
{
/* The magic number to idenify this as a partition, it should have
the value `0x504D'. */
grub_uint16_t magic;
/* Reserved. */
grub_uint16_t reserved;
/* The size of the partition map in blocks. */
grub_uint32_t partmap_size;
/* The first physical block of the partition. */
grub_uint32_t first_phys_block;
/* The amount of blocks. */
grub_uint32_t blockcnt;
/* The partition name. */
char partname[32];
/* The partition type. */
char parttype[32];
/* The first datablock of the partition. */
grub_uint32_t datablocks_first;
/* The amount datablocks. */
grub_uint32_t datablocks_count;
/* The status of the partition. (???) */
grub_uint32_t status;
/* The first block on which the bootcode can be found. */
grub_uint32_t bootcode_pos;
/* The size of the bootcode in bytes. */
grub_uint32_t bootcode_size;
/* The load address of the bootcode. */
grub_uint32_t bootcode_loadaddr;
/* Reserved. */
grub_uint32_t reserved2;
/* The entrypoint of the bootcode. */
grub_uint32_t bootcode_entrypoint;
/* Reserved. */
grub_uint32_t reserved3;
/* A checksum of the bootcode. */
grub_uint32_t bootcode_checksum;
/* The processor type. */
char processor[16];
/* Padding. */
grub_uint16_t pad[187];
};
static struct grub_partition_map grub_apple_partition_map;
#ifndef GRUB_UTIL
static grub_dl_t my_mod;
#endif
static grub_err_t
apple_partition_map_iterate (grub_disk_t disk,
int (*hook) (const grub_partition_t partition))
{
struct grub_partition part;
struct grub_apple_part apart;
struct grub_disk raw;
int partno = 0;
int pos = GRUB_DISK_SECTOR_SIZE;
/* Enforce raw disk access. */
raw = *disk;
raw.partition = 0;
part.partmap = &grub_apple_partition_map;
for (;;)
{
if (grub_disk_read (&raw, pos / GRUB_DISK_SECTOR_SIZE,
pos % GRUB_DISK_SECTOR_SIZE,
sizeof (struct grub_apple_part), (char *) &apart))
return grub_errno;
if (apart.magic != GRUB_APPLE_PART_MAGIC)
break;
part.start = apart.first_phys_block;
part.len = apart.blockcnt;
part.offset = pos;
part.index = partno;
if (hook (&part))
return grub_errno;
if (apart.first_phys_block == GRUB_DISK_SECTOR_SIZE * 2)
return 0;
pos += sizeof (struct grub_apple_part);
partno++;
}
return 0;
}
static grub_partition_t
apple_partition_map_probe (grub_disk_t disk, const char *str)
{
grub_partition_t p = 0;
int partnum = 0;
char *s = (char *) str;
auto int find_func (const grub_partition_t partition);
int find_func (const grub_partition_t partition)
{
if (partnum == partition->index)
{
p = (grub_partition_t) grub_malloc (sizeof (*p));
if (! p)
return 1;
grub_memcpy (p, partition, sizeof (*p));
return 1;
}
return 0;
}
/* Get the partition number. */
partnum = grub_strtoul (s, 0, 10);
if (grub_errno)
{
grub_error (GRUB_ERR_BAD_FILENAME, "invalid partition");
return 0;
}
if (apple_partition_map_iterate (disk, find_func))
goto fail;
return p;
fail:
grub_free (p);
return 0;
}
static char *
apple_partition_map_get_name (const grub_partition_t p)
{
char *name;
name = grub_malloc (13);
if (! name)
return 0;
grub_sprintf (name, "%d", p->index);
return name;
}
/* Partition map type. */
static struct grub_partition_map grub_apple_partition_map =
{
.name = "apple_partition_map",
.iterate = apple_partition_map_iterate,
.probe = apple_partition_map_probe,
.get_name = apple_partition_map_get_name
};
#ifdef GRUB_UTIL
void
grub_apple_partition_map_init (void)
{
grub_partition_map_register (&grub_apple_partition_map);
}
void
grub_apple_partition_map_fini (void)
{
grub_partition_map_unregister (&grub_apple_partition_map);
}
#else
GRUB_MOD_INIT
{
grub_partition_map_register (&grub_apple_partition_map);
my_mod = mod;
}
GRUB_MOD_FINI
{
grub_partition_map_unregister (&grub_apple_partition_map);
}
#endif

314
partmap/pc.c Normal file
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@ -0,0 +1,314 @@
/* pc.c - Read PC style partition tables. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2004 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/partition.h>
#include <grub/pc_partition.h>
#include <grub/disk.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/dl.h>
static struct grub_partition_map grub_pc_partition_map;
#ifndef GRUB_UTIL
static grub_dl_t my_mod;
#endif
/* Parse the partition representation in STR and return a partition. */
static grub_partition_t
grub_partition_parse (const char *str)
{
grub_partition_t p;
struct grub_pc_partition *pcdata;
char *s = (char *) str;
p = (grub_partition_t) grub_malloc (sizeof (*p));
if (! p)
return 0;
pcdata = (struct grub_pc_partition *) grub_malloc (sizeof (*pcdata));
if (! pcdata)
goto fail;
p->data = pcdata;
p->partmap = &grub_pc_partition_map;
/* Initialize some of the fields with invalid values. */
pcdata->bsd_part = pcdata->dos_type = pcdata->bsd_type = p->index = -1;
/* Get the DOS partition number. */
pcdata->dos_part = grub_strtoul (s, &s, 0);
if (grub_errno)
{
/* Not found. Maybe only a BSD label is specified. */
pcdata->dos_part = -1;
grub_errno = GRUB_ERR_NONE;
}
else if (*s == ',')
s++;
if (*s)
{
if (*s >= 'a' && *s <= 'h')
{
pcdata->bsd_part = *s - 'a';
s++;
}
if (*s)
goto fail;
}
if (pcdata->dos_part == -1 && pcdata->bsd_part == -1)
goto fail;
return p;
fail:
grub_free (p);
grub_free (pcdata);
grub_error (GRUB_ERR_BAD_FILENAME, "invalid partition");
return 0;
}
static grub_err_t
pc_partition_map_iterate (grub_disk_t disk,
int (*hook) (const grub_partition_t partition))
{
struct grub_partition p;
struct grub_pc_partition pcdata;
struct grub_pc_partition_mbr mbr;
struct grub_pc_partition_disk_label label;
struct grub_disk raw;
/* Enforce raw disk access. */
raw = *disk;
raw.partition = 0;
p.offset = 0;
pcdata.ext_offset = 0;
pcdata.dos_part = -1;
p.data = &pcdata;
p.partmap = &grub_pc_partition_map;
while (1)
{
int i;
struct grub_pc_partition_entry *e;
/* Read the MBR. */
if (grub_disk_read (&raw, p.offset, 0, sizeof (mbr), (char *) &mbr))
goto finish;
/* Check if it is valid. */
if (mbr.signature != grub_cpu_to_le16 (GRUB_PC_PARTITION_SIGNATURE))
return grub_error (GRUB_ERR_BAD_PART_TABLE, "no signature");
/* Analyze DOS partitions. */
for (p.index = 0; p.index < 4; p.index++)
{
e = mbr.entries + p.index;
p.start = p.offset + grub_le_to_cpu32 (e->start);
p.len = grub_le_to_cpu32 (e->length);
pcdata.bsd_part = -1;
pcdata.dos_type = e->type;
pcdata.bsd_type = -1;
/* If this partition is a normal one, call the hook. */
if (! grub_pc_partition_is_empty (e->type)
&& ! grub_pc_partition_is_extended (e->type))
{
pcdata.dos_part++;
if (hook (&p))
goto finish;
/* Check if this is a BSD partition. */
if (grub_pc_partition_is_bsd (e->type))
{
/* Check if the BSD label is within the DOS partition. */
if (p.len <= GRUB_PC_PARTITION_BSD_LABEL_SECTOR)
return grub_error (GRUB_ERR_BAD_PART_TABLE,
"no space for disk label");
/* Read the BSD label. */
if (grub_disk_read (&raw,
(p.start
+ GRUB_PC_PARTITION_BSD_LABEL_SECTOR),
0,
sizeof (label),
(char *) &label))
goto finish;
/* Check if it is valid. */
if (label.magic
!= grub_cpu_to_le32 (GRUB_PC_PARTITION_BSD_LABEL_MAGIC))
return grub_error (GRUB_ERR_BAD_PART_TABLE,
"invalid disk label magic");
for (pcdata.bsd_part = 0;
pcdata.bsd_part < grub_cpu_to_le16 (label.num_partitions);
pcdata.bsd_part++)
{
struct grub_pc_partition_bsd_entry *be
= label.entries + pcdata.bsd_part;
p.start = grub_le_to_cpu32 (be->offset);
p.len = grub_le_to_cpu32 (be->size);
pcdata.bsd_type = be->fs_type;
if (be->fs_type != GRUB_PC_PARTITION_BSD_TYPE_UNUSED)
if (hook (&p))
goto finish;
}
}
}
else if (pcdata.dos_part < 4)
/* If this partition is a logical one, shouldn't increase the
partition number. */
pcdata.dos_part++;
}
/* Find an extended partition. */
for (i = 0; i < 4; i++)
{
e = mbr.entries + i;
if (grub_pc_partition_is_extended (e->type))
{
p.offset = pcdata.ext_offset + grub_le_to_cpu32 (e->start);
if (! pcdata.ext_offset)
pcdata.ext_offset = p.offset;
break;
}
}
/* If no extended partition, the end. */
if (i == 4)
break;
}
finish:
return grub_errno;
}
static grub_partition_t
pc_partition_map_probe (grub_disk_t disk, const char *str)
{
grub_partition_t p;
struct grub_pc_partition *pcdata;
auto int find_func (const grub_partition_t partition);
int find_func (const grub_partition_t partition)
{
struct grub_pc_partition *partdata = partition->data;
if ((pcdata->dos_part == partdata->dos_part || pcdata->dos_part == -1)
&& pcdata->bsd_part == partdata->bsd_part)
{
grub_memcpy (p, partition, sizeof (*p));
grub_memcpy (pcdata, partdata, sizeof (*pcdata));
return 1;
}
return 0;
}
p = grub_partition_parse (str);
if (! p)
return 0;
pcdata = p->data;
if (pc_partition_map_iterate (disk, find_func))
goto fail;
if (p->index < 0)
{
grub_error (GRUB_ERR_BAD_DEVICE, "no such partition");
goto fail;
}
return p;
fail:
grub_free (p);
grub_free (pcdata);
return 0;
}
static char *
pc_partition_map_get_name (const grub_partition_t p)
{
char *name;
struct grub_pc_partition *pcdata = p->data;
name = grub_malloc (13);
if (! name)
return 0;
if (pcdata->bsd_part < 0)
grub_sprintf (name, "%d", pcdata->dos_part);
else
grub_sprintf (name, "%d,%c", pcdata->dos_part, pcdata->bsd_part + 'a');
return name;
}
/* Partition map type. */
static struct grub_partition_map grub_pc_partition_map =
{
.name = "pc_partition_map",
.iterate = pc_partition_map_iterate,
.probe = pc_partition_map_probe,
.get_name = pc_partition_map_get_name
};
#ifdef GRUB_UTIL
void
grub_pc_partition_map_init (void)
{
grub_partition_map_register (&grub_pc_partition_map);
}
void
grub_pc_partition_map_fini (void)
{
grub_partition_map_unregister (&grub_pc_partition_map);
}
#else
GRUB_MOD_INIT
{
grub_partition_map_register (&grub_pc_partition_map);
my_mod = mod;
}
GRUB_MOD_FINI
{
grub_partition_map_unregister (&grub_pc_partition_map);
}
#endif