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Split minix.mod into minix.mod and minix2.mod.

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* Makefile.util.def (libgrub.a): Add grub-core/fs/minix2.c.
	* grub-core/Makefile.core.def (minix2): New module.
	* grub-core/fs/minix.c: Use definitions instead of runtime version
	checking.
	* grub-core/fs/minix2.c: New file.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-09-08 19:13:48 +02:00
parent 5f7a44bf92
commit b4a0c9154b
4 changed files with 69 additions and 84 deletions
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1
Makefile.util.def
View file

@ -52,6 +52,7 @@ library = {
common = grub-core/fs/iso9660.c;
common = grub-core/fs/jfs.c;
common = grub-core/fs/minix.c;
common = grub-core/fs/minix2.c;
common = grub-core/fs/nilfs2.c;
common = grub-core/fs/ntfs.c;
common = grub-core/fs/ntfscomp.c;

5
grub-core/Makefile.core.def
View file

@ -880,6 +880,11 @@ module = {
common = fs/minix.c;
};
module = {
name = minix2;
common = fs/minix2.c;
};
module = {
name = nilfs2;
common = fs/nilfs2.c;

145
grub-core/fs/minix.c
View file

@ -25,10 +25,13 @@
#include <grub/dl.h>
#include <grub/types.h>
#ifdef MODE_MINIX2
#define GRUB_MINIX_MAGIC 0x2468
#define GRUB_MINIX_MAGIC_30 0x2478
#else
#define GRUB_MINIX_MAGIC 0x137F
#define GRUB_MINIX2_MAGIC 0x2468
#define GRUB_MINIX_MAGIC_30 0x138F
#define GRUB_MINIX2_MAGIC_30 0x2478
#endif
#define GRUB_MINIX_BSIZE 1024U
#define GRUB_MINIX_LOG2_BSIZE 1
#define GRUB_MINIX_ROOT_INODE 1
@ -38,20 +41,25 @@
#define GRUB_MINIX_IFDIR 0040000U
#define GRUB_MINIX_IFLNK 0120000U
#define GRUB_MINIX_INODE(data,field) (data->version == 1 ? \
data->inode. field : data->inode2. field)
#define GRUB_MINIX_INODE_ENDIAN(data,field,bits1,bits2) (data->version == 1 ? \
grub_le_to_cpu##bits1 (data->inode.field) : \
grub_le_to_cpu##bits2 (data->inode2.field))
#define GRUB_MINIX_INODE_SIZE(data) GRUB_MINIX_INODE_ENDIAN (data,size,16,32)
#define GRUB_MINIX_INODE_MODE(data) GRUB_MINIX_INODE_ENDIAN (data,mode,16,16)
#define GRUB_MINIX_INODE_DIR_ZONES(data,blk) GRUB_MINIX_INODE_ENDIAN \
(data,dir_zones[blk],16,32)
#define GRUB_MINIX_INODE_INDIR_ZONE(data) \
GRUB_MINIX_INODE_ENDIAN (data,indir_zone,16,32)
#define GRUB_MINIX_INODE_DINDIR_ZONE(data) \
GRUB_MINIX_INODE_ENDIAN (data,double_indir_zone,16,32)
#define GRUB_MINIX_INODE_BLKSZ(data) (data->version == 1 ? 2 : 4)
#ifdef MODE_MINIX2
typedef grub_uint32_t grub_minix_uintn_t;
#define grub_minix_le_to_cpu_n grub_le_to_cpu32
#else
typedef grub_uint16_t grub_minix_uintn_t;
#define grub_minix_le_to_cpu_n grub_le_to_cpu16
#endif
#define GRUB_MINIX_INODE_BLKSZ(data) sizeof (grub_minix_uintn_t)
#define GRUB_MINIX_INODE_SIZE(data) (grub_minix_le_to_cpu_n (data->inode.size))
#define GRUB_MINIX_INODE_MODE(data) (grub_le_to_cpu16 (data->inode.mode))
#define GRUB_MINIX_INODE_DIR_ZONES(data,blk) (grub_minix_le_to_cpu_n \
(data->inode.dir_zones[blk]))
#define GRUB_MINIX_INODE_INDIR_ZONE(data) (grub_minix_le_to_cpu_n \
(data->inode.indir_zone))
#define GRUB_MINIX_INODE_DINDIR_ZONE(data) (grub_minix_le_to_cpu_n \
(data->inode.double_indir_zone))
#define GRUB_MINIX_LOG2_ZONESZ (GRUB_MINIX_LOG2_BSIZE \
+ grub_le_to_cpu16 (sblock->log2_zone_size))
#define GRUB_MINIX_ZONESZ (GRUB_MINIX_BSIZE \
@ -69,6 +77,7 @@ struct grub_minix_sblock
grub_uint16_t magic;
};
#ifndef MODE_MINIX2
struct grub_minix_inode
{
grub_uint16_t mode;
@ -82,7 +91,9 @@ struct grub_minix_inode
grub_uint16_t double_indir_zone;
};
struct grub_minix2_inode
#else
struct grub_minix_inode
{
grub_uint16_t mode;
grub_uint16_t nlinks;
@ -99,16 +110,16 @@ struct grub_minix2_inode
};
#endif
/* Information about a "mounted" minix filesystem. */
struct grub_minix_data
{
struct grub_minix_sblock sblock;
struct grub_minix_inode inode;
struct grub_minix2_inode inode2;
int ino;
int linknest;
grub_disk_t disk;
int version;
int filename_size;
};
@ -128,24 +139,12 @@ grub_minix_get_file_block (struct grub_minix_data *data, unsigned int blk)
/* Read the block pointer in ZONE, on the offset NUM. */
int grub_get_indir (int zone, int num)
{
if (data->version == 1)
{
grub_uint16_t indir16;
grub_disk_read (data->disk,
zone << GRUB_MINIX_LOG2_ZONESZ,
sizeof (grub_uint16_t) * num,
sizeof (grub_uint16_t), (char *) &indir16);
return grub_le_to_cpu16 (indir16);
}
else
{
grub_uint32_t indir32;
grub_disk_read (data->disk,
zone << GRUB_MINIX_LOG2_ZONESZ,
sizeof (grub_uint32_t) * num,
sizeof (grub_uint32_t), (char *) &indir32);
return grub_le_to_cpu32 (indir32);
}
grub_minix_uintn_t indirn;
grub_disk_read (data->disk,
zone << GRUB_MINIX_LOG2_ZONESZ,
sizeof (grub_minix_uintn_t) * num,
sizeof (grub_minix_uintn_t), (char *) &indirn);
return grub_minix_le_to_cpu_n (indirn);
}
/* Direct block. */
@ -259,27 +258,13 @@ grub_minix_read_inode (struct grub_minix_data *data, int ino)
+ grub_le_to_cpu16 (sblock->zone_bmap_size))
<< GRUB_MINIX_LOG2_BSIZE);
if (data->version == 1)
{
block += ino / (GRUB_DISK_SECTOR_SIZE / sizeof (struct grub_minix_inode));
int offs = (ino % (GRUB_DISK_SECTOR_SIZE
/ sizeof (struct grub_minix_inode))
* sizeof (struct grub_minix_inode));
grub_disk_read (data->disk, block, offs,
sizeof (struct grub_minix_inode), &data->inode);
}
else
{
block += ino / (GRUB_DISK_SECTOR_SIZE
/ sizeof (struct grub_minix2_inode));
int offs = (ino
% (GRUB_DISK_SECTOR_SIZE / sizeof (struct grub_minix2_inode))
* sizeof (struct grub_minix2_inode));
grub_disk_read (data->disk, block, offs,
sizeof (struct grub_minix2_inode),&data->inode2);
}
block += ino / (GRUB_DISK_SECTOR_SIZE / sizeof (struct grub_minix_inode));
int offs = (ino % (GRUB_DISK_SECTOR_SIZE
/ sizeof (struct grub_minix_inode))
* sizeof (struct grub_minix_inode));
grub_disk_read (data->disk, block, offs,
sizeof (struct grub_minix_inode), &data->inode);
return GRUB_ERR_NONE;
}
@ -424,25 +409,9 @@ grub_minix_mount (grub_disk_t disk)
goto fail;
if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX_MAGIC)
{
data->version = 1;
data->filename_size = 14;
}
else if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX2_MAGIC)
{
data->version = 2;
data->filename_size = 14;
}
data->filename_size = 14;
else if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX_MAGIC_30)
{
data->version = 1;
data->filename_size = 30;
}
else if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX2_MAGIC_30)
{
data->version = 2;
data->filename_size = 30;
}
data->filename_size = 30;
else
goto fail;
@ -453,7 +422,11 @@ grub_minix_mount (grub_disk_t disk)
fail:
grub_free (data);
#ifdef MODE_MINIX2
grub_error (GRUB_ERR_BAD_FS, "not a minix2 filesystem");
#else
grub_error (GRUB_ERR_BAD_FS, "not a minix filesystem");
#endif
return 0;
}
@ -583,32 +556,36 @@ grub_minix_close (grub_file_t file)
}
static grub_err_t
grub_minix_label (grub_device_t device __attribute ((unused)),
char **label __attribute ((unused)))
{
return GRUB_ERR_NONE;
}
static struct grub_fs grub_minix_fs =
{
#ifdef MODE_MINIX2
.name = "minix2",
#else
.name = "minix",
#endif
.dir = grub_minix_dir,
.open = grub_minix_open,
.read = grub_minix_read,
.close = grub_minix_close,
.label = grub_minix_label,
.next = 0
};
#ifdef MODE_MINIX2
GRUB_MOD_INIT(minix2)
#else
GRUB_MOD_INIT(minix)
#endif
{
grub_fs_register (&grub_minix_fs);
my_mod = mod;
}
#ifdef MODE_MINIX2
GRUB_MOD_FINI(minix2)
#else
GRUB_MOD_FINI(minix)
#endif
{
grub_fs_unregister (&grub_minix_fs);
}

2
grub-core/fs/minix2.c Normal file
View file

@ -0,0 +1,2 @@
#define MODE_MINIX2 1
#include "minix.c"