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Support big-endian UFS1.

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* Makefile.util.def (libgrubmods): Add ufs_be.c
	* grub-core/Makefile.core.def (ufs1_be): New module.
	* grub-core/fs/ufs_be.c: New file.
	* grub-core/fs/ufs.c: Declare grub_ufs_to_le* and use them throughout
	the file.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2012-12-08 20:56:58 +01:00
parent 2f9f40ba35
commit d9c48c7b7c
5 changed files with 72 additions and 29 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2012-12-08 Vladimir Serbinenko <phcoder@gmail.com>
Support big-endian UFS1.
* Makefile.util.def (libgrubmods): Add ufs_be.c
* grub-core/Makefile.core.def (ufs1_be): New module.
* grub-core/fs/ufs_be.c: New file.
* grub-core/fs/ufs.c: Declare grub_ufs_to_le* and use them throughout
the file.
2012-11-28 Leif Lindholm <leif.lindholm@arm.com>
* include/grub/types.h: Fix functionality unaffecting typo in

1
Makefile.util.def
View file

@ -90,6 +90,7 @@ library = {
common = grub-core/fs/udf.c;
common = grub-core/fs/ufs2.c;
common = grub-core/fs/ufs.c;
common = grub-core/fs/ufs_be.c;
common = grub-core/fs/xfs.c;
common = grub-core/fs/zfs/zfscrypt.c;
common = grub-core/fs/zfs/zfs.c;

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

@ -1180,6 +1180,11 @@ module = {
common = fs/ufs.c;
};
module = {
name = ufs1_be;
common = fs/ufs_be.c;
};
module = {
name = ufs2;
common = fs/ufs2.c;

83
grub-core/fs/ufs.c
View file

@ -49,18 +49,30 @@ GRUB_MOD_LICENSE ("GPLv3+");
#define GRUB_UFS_VOLNAME_LEN 32
#ifdef MODE_BIGENDIAN
#define grub_ufs_to_cpu16 grub_be_to_cpu16
#define grub_ufs_to_cpu32 grub_be_to_cpu32
#define grub_ufs_to_cpu64 grub_be_to_cpu64
#define grub_cpu_to_ufs32_compile_time grub_cpu_to_be32_compile_time
#else
#define grub_ufs_to_cpu16 grub_le_to_cpu16
#define grub_ufs_to_cpu32 grub_le_to_cpu32
#define grub_ufs_to_cpu64 grub_le_to_cpu64
#define grub_cpu_to_ufs32_compile_time grub_cpu_to_le32_compile_time
#endif
/* Calculate in which group the inode can be found. */
#define UFS_BLKSZ(sblock) (grub_le_to_cpu32 (sblock->bsize))
#define UFS_BLKSZ(sblock) (grub_ufs_to_cpu32 (sblock->bsize))
#define UFS_LOG_BLKSZ(sblock) (data->log2_blksz)
#ifdef MODE_UFS2
#define INODE_ENDIAN(data,field,bits1,bits2) grub_le_to_cpu##bits2 (data->inode.field)
#define INODE_ENDIAN(data,field,bits1,bits2) grub_ufs_to_cpu##bits2 (data->inode.field)
#else
#define INODE_ENDIAN(data,field,bits1,bits2) grub_le_to_cpu##bits1 (data->inode.field)
#define INODE_ENDIAN(data,field,bits1,bits2) grub_ufs_to_cpu##bits1 (data->inode.field)
#endif
#define INODE_SIZE(data) grub_le_to_cpu64 (data->inode.size)
#define INODE_MODE(data) grub_le_to_cpu16 (data->inode.mode)
#define INODE_SIZE(data) grub_ufs_to_cpu64 (data->inode.size)
#define INODE_MODE(data) grub_ufs_to_cpu16 (data->inode.mode)
#ifdef MODE_UFS2
#define LOG_INODE_BLKSZ 3
#else
@ -234,7 +246,7 @@ grub_ufs_get_file_block (struct grub_ufs_data *data, grub_disk_addr_t blk)
if (blk < GRUB_UFS_DIRBLKS)
return INODE_DIRBLOCKS (data, blk);
log2_blksz = grub_le_to_cpu32 (data->sblock.log2_blksz);
log2_blksz = grub_ufs_to_cpu32 (data->sblock.log2_blksz);
blk -= GRUB_UFS_DIRBLKS;
@ -366,7 +378,7 @@ grub_ufs_read_file (struct grub_ufs_data *data,
{
data->disk->read_hook = read_hook;
grub_disk_read (data->disk,
blknr << grub_le_to_cpu32 (data->sblock.log2_blksz),
blknr << grub_ufs_to_cpu32 (data->sblock.log2_blksz),
skipfirst, blockend, buf);
data->disk->read_hook = 0;
if (grub_errno)
@ -389,17 +401,17 @@ grub_ufs_read_inode (struct grub_ufs_data *data, int ino, char *inode)
struct grub_ufs_sblock *sblock = &data->sblock;
/* Determine the group the inode is in. */
int group = ino / grub_le_to_cpu32 (sblock->ino_per_group);
int group = ino / grub_ufs_to_cpu32 (sblock->ino_per_group);
/* Determine the inode within the group. */
int grpino = ino % grub_le_to_cpu32 (sblock->ino_per_group);
int grpino = ino % grub_ufs_to_cpu32 (sblock->ino_per_group);
/* The first block of the group. */
int grpblk = group * (grub_le_to_cpu32 (sblock->frags_per_group));
int grpblk = group * (grub_ufs_to_cpu32 (sblock->frags_per_group));
#ifndef MODE_UFS2
grpblk += grub_le_to_cpu32 (sblock->cylg_offset)
* (group & (~grub_le_to_cpu32 (sblock->cylg_mask)));
grpblk += grub_ufs_to_cpu32 (sblock->cylg_offset)
* (group & (~grub_ufs_to_cpu32 (sblock->cylg_mask)));
#endif
if (!inode)
@ -409,8 +421,8 @@ grub_ufs_read_inode (struct grub_ufs_data *data, int ino, char *inode)
}
grub_disk_read (data->disk,
((grub_le_to_cpu32 (sblock->inoblk_offs) + grpblk)
<< grub_le_to_cpu32 (data->sblock.log2_blksz))
((grub_ufs_to_cpu32 (sblock->inoblk_offs) + grpblk)
<< grub_ufs_to_cpu32 (data->sblock.log2_blksz))
+ grpino / UFS_INODE_PER_BLOCK,
(grpino % UFS_INODE_PER_BLOCK)
* sizeof (struct grub_ufs_inode),
@ -501,7 +513,7 @@ grub_ufs_find_file (struct grub_ufs_data *data, const char *path)
#ifdef MODE_UFS2
namelen = dirent.namelen_bsd;
#else
namelen = grub_le_to_cpu16 (dirent.namelen);
namelen = grub_ufs_to_cpu16 (dirent.namelen);
#endif
{
char filename[namelen + 1];
@ -515,7 +527,7 @@ grub_ufs_find_file (struct grub_ufs_data *data, const char *path)
if (!grub_strcmp (name, filename))
{
dirino = data->ino;
grub_ufs_read_inode (data, grub_le_to_cpu32 (dirent.ino), 0);
grub_ufs_read_inode (data, grub_ufs_to_cpu32 (dirent.ino), 0);
if ((INODE_MODE(data) & GRUB_UFS_ATTR_TYPE)
== GRUB_UFS_ATTR_LNK)
@ -547,7 +559,7 @@ grub_ufs_find_file (struct grub_ufs_data *data, const char *path)
}
}
pos += grub_le_to_cpu16 (dirent.direntlen);
pos += grub_ufs_to_cpu16 (dirent.direntlen);
} while (pos < INODE_SIZE (data));
grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("file `%s' not found"), path);
@ -576,12 +588,12 @@ grub_ufs_mount (grub_disk_t disk)
/* No need to byteswap bsize in this check. It works the same on both
endiannesses. */
if (grub_le_to_cpu32 (data->sblock.magic) == GRUB_UFS_MAGIC
if (data->sblock.magic == grub_cpu_to_ufs32_compile_time (GRUB_UFS_MAGIC)
&& data->sblock.bsize != 0
&& ((data->sblock.bsize & (data->sblock.bsize - 1)) == 0))
{
for (data->log2_blksz = 0;
(1U << data->log2_blksz) < grub_le_to_cpu32 (data->sblock.bsize);
(1U << data->log2_blksz) < grub_ufs_to_cpu32 (data->sblock.bsize);
data->log2_blksz++);
data->disk = disk;
@ -652,7 +664,7 @@ grub_ufs_dir (grub_device_t device, const char *path,
#ifdef MODE_UFS2
namelen = dirent.namelen_bsd;
#else
namelen = grub_le_to_cpu16 (dirent.namelen);
namelen = grub_ufs_to_cpu16 (dirent.namelen);
#endif
{
@ -667,18 +679,19 @@ grub_ufs_dir (grub_device_t device, const char *path,
break;
filename[namelen] = '\0';
grub_ufs_read_inode (data, dirent.ino, (char *) &inode);
grub_ufs_read_inode (data, grub_ufs_to_cpu32 (dirent.ino),
(char *) &inode);
info.dir = ((grub_le_to_cpu16 (inode.mode) & GRUB_UFS_ATTR_TYPE)
info.dir = ((grub_ufs_to_cpu16 (inode.mode) & GRUB_UFS_ATTR_TYPE)
== GRUB_UFS_ATTR_DIR);
info.mtime = grub_le_to_cpu64 (inode.mtime);
info.mtime = grub_ufs_to_cpu64 (inode.mtime);
info.mtimeset = 1;
if (hook (filename, &info))
break;
}
pos += grub_le_to_cpu16 (dirent.direntlen);
pos += grub_ufs_to_cpu16 (dirent.direntlen);
}
fail:
@ -773,8 +786,8 @@ grub_ufs_uuid (grub_device_t device, char **uuid)
data = grub_ufs_mount (disk);
if (data && (data->sblock.uuidhi != 0 || data->sblock.uuidlow != 0))
*uuid = grub_xasprintf ("%08x%08x",
(unsigned) grub_le_to_cpu32 (data->sblock.uuidhi),
(unsigned) grub_le_to_cpu32 (data->sblock.uuidlow));
(unsigned) grub_ufs_to_cpu32 (data->sblock.uuidhi),
(unsigned) grub_ufs_to_cpu32 (data->sblock.uuidlow));
else
*uuid = NULL;
@ -799,10 +812,10 @@ grub_ufs_mtime (grub_device_t device, grub_int32_t *tm)
*tm = 0;
else
{
*tm = grub_le_to_cpu32 (data->sblock.mtime);
*tm = grub_ufs_to_cpu32 (data->sblock.mtime);
#ifdef MODE_UFS2
if (*tm < (grub_int64_t) grub_le_to_cpu64 (data->sblock.mtime2))
*tm = grub_le_to_cpu64 (data->sblock.mtime2);
if (*tm < (grub_int64_t) grub_ufs_to_cpu64 (data->sblock.mtime2))
*tm = grub_ufs_to_cpu64 (data->sblock.mtime2);
#endif
}
@ -819,8 +832,12 @@ static struct grub_fs grub_ufs_fs =
{
#ifdef MODE_UFS2
.name = "ufs2",
#else
#ifdef MODE_BIGENDIAN
.name = "ufs1_be",
#else
.name = "ufs1",
#endif
#endif
.dir = grub_ufs_dir,
.open = grub_ufs_open,
@ -839,8 +856,12 @@ static struct grub_fs grub_ufs_fs =
#ifdef MODE_UFS2
GRUB_MOD_INIT(ufs2)
#else
#ifdef MODE_BIGENDIAN
GRUB_MOD_INIT(ufs1_be)
#else
GRUB_MOD_INIT(ufs1)
#endif
#endif
{
grub_fs_register (&grub_ufs_fs);
my_mod = mod;
@ -849,8 +870,12 @@ GRUB_MOD_INIT(ufs1)
#ifdef MODE_UFS2
GRUB_MOD_FINI(ufs2)
#else
#ifdef MODE_BIGENDIAN
GRUB_MOD_FINI(ufs1_be)
#else
GRUB_MOD_FINI(ufs1)
#endif
#endif
{
grub_fs_unregister (&grub_ufs_fs);
}

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

@ -0,0 +1,2 @@
#define MODE_BIGENDIAN 1
#include "ufs.c"