linux-ext4 - Re: [PATCH 3/4][e2fsprogs] Relax group descriptor checking.

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Message-ID: <20070803071709.11d0de76@gara>
Date:	Fri, 3 Aug 2007 07:17:09 -0500
From:	"Jose R. Santos" <jrs@...ibm.com>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 3/4][e2fsprogs] Relax group descriptor checking.

On Fri, 03 Aug 2007 10:54:04 +0530
"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> wrote:
> Jose R. Santos wrote:
> > From: Jose R. Santos <jrs@...ibm.com>
> > 
> >
> >  e2fsck/super.c          |   10 ++++++++--
> >  lib/ext2fs/check_desc.c |   10 ++++++++--
> >  2 files changed, 16 insertions(+), 4 deletions(-)
> > 
> > diff --git a/e2fsck/super.c b/e2fsck/super.c
> > index 00a131c..8e58e5c 100644
> > --- a/e2fsck/super.c
> > +++ b/e2fsck/super.c
> > @@ -578,8 +578,14 @@ void check_super_block(e2fsck_t ctx)
> >  	for (i = 0, gd=fs->group_desc; i < fs->group_desc_count; i++, gd++) {
> >  		pctx.group = i;
> > 
> > -		first_block = ext2fs_group_first_block(fs, i);
> > -		last_block = ext2fs_group_last_block(fs, i);
> > +		if (EXT2_HAS_INCOMPAT_FEATURE (fs->super,
> > +			EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
> > +			first_block = fs->super->s_first_data_block;
> > +			last_block = fs->super->s_blocks_count;
> 
> 
> I guess this should be fs->super->s_blocks_count - 1 ;

Updated.

> > +		} else {
> > +			first_block = ext2fs_group_first_block(fs, i);
> > +			last_block = ext2fs_group_last_block(fs, i);
> > +		}
> > 
> >  		if ((gd->bg_block_bitmap < first_block) ||
> >  		    (gd->bg_block_bitmap > last_block)) {
> > diff --git a/lib/ext2fs/check_desc.c b/lib/ext2fs/check_desc.c
> > index 146f9e5..bb65c06 100644
> > --- a/lib/ext2fs/check_desc.c
> > +++ b/lib/ext2fs/check_desc.c
> > @@ -38,8 +38,14 @@ errcode_t ext2fs_check_desc(ext2_filsys fs)
> >  	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
> > 
> >  	for (i = 0; i < fs->group_desc_count; i++) {
> > -		first_block = ext2fs_group_first_block(fs, i);
> > -		last_block = ext2fs_group_last_block(fs, i);
> > +		if (EXT2_HAS_INCOMPAT_FEATURE (fs->super, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
> > +			first_block = fs->super->s_first_data_block;
> > +			last_block = fs->super->s_blocks_count;
> > +		
> 
> I guess this should be fs->super->s_blocks_count - 1 ;

Updated.

Thanks
 
> -aneesh

-JRS
-
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