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* grub-core/fs/nilfs2.c (grub_nilfs2_load_sb): Handle grub_disk_read 

errors.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-08-28 15:25:12 +02:00
parent 671404469c
commit b17540cbd9
2 changed files with 21 additions and 10 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2010-08-28 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/fs/nilfs2.c (grub_nilfs2_load_sb): Handle grub_disk_read
errors.
2010-08-27 Vladimir Serbinenko <phcoder@gmail.com>
Handle USB pendrives exposed as floppies.

26
grub-core/fs/nilfs2.c
View File

@ -718,10 +718,13 @@ grub_nilfs2_load_sb (struct grub_nilfs2_data *data)
grub_uint64_t partition_size;
int valid[2];
int swp = 0;
grub_err_t err;
/* Read first super block. */
grub_disk_read (disk, NILFS_1ST_SUPER_BLOCK, 0,
sizeof (struct grub_nilfs2_super_block), &data->sblock);
err = grub_disk_read (disk, NILFS_1ST_SUPER_BLOCK, 0,
sizeof (struct grub_nilfs2_super_block), &data->sblock);
if (err)
return err;
/* Make sure if 1st super block is valid. */
valid[0] = grub_nilfs2_valid_sb (&data->sblock);
@ -729,17 +732,21 @@ grub_nilfs2_load_sb (struct grub_nilfs2_data *data)
if (partition_size != GRUB_DISK_SIZE_UNKNOWN)
{
/* Read second super block. */
grub_disk_read (disk, NILFS_2ND_SUPER_BLOCK (partition_size), 0,
sizeof (struct grub_nilfs2_super_block), &sb2);
/* Make sure if 2nd super block is valid. */
valid[1] = grub_nilfs2_valid_sb (&sb2);
err = grub_disk_read (disk, NILFS_2ND_SUPER_BLOCK (partition_size), 0,
sizeof (struct grub_nilfs2_super_block), &sb2);
if (err)
{
valid[1] = 0;
grub_errno = GRUB_ERR_NONE;
}
else
/* Make sure if 2nd super block is valid. */
valid[1] = grub_nilfs2_valid_sb (&sb2);
}
else
/* 2nd super block may not exist, so it's invalid. */
valid[1] = 0;
if (!valid[0] && !valid[1])
return grub_error (GRUB_ERR_BAD_FS, "not a nilfs2 filesystem");
@ -752,8 +759,7 @@ grub_nilfs2_load_sb (struct grub_nilfs2_data *data)
grub_memcpy (&data->sblock, &sb2,
sizeof (struct grub_nilfs2_super_block));
grub_errno = GRUB_ERR_NONE;
return grub_errno;
return GRUB_ERR_NONE;
}
static struct grub_nilfs2_data *