Re: [PATCH v1 17/22] e2fsck: check inline_data in pass1

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On Fri, Oct 11, 2013 at 05:47:09PM -0700, Darrick J. Wong wrote:
> On Fri, Aug 02, 2013 at 05:49:44PM +0800, Zheng Liu wrote:
> > From: Zheng Liu <wenqing.lz@xxxxxxxxxx>
> > 
> > Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
> > Signed-off-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
> > ---
> >  e2fsck/pass1.c          |   70 ++++++++++++++++++++++++++++++++++++++++++++---
> >  lib/ext2fs/dblist_dir.c |   10 +++++--
> >  2 files changed, 74 insertions(+), 6 deletions(-)
> > 
> > diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
> > index e6ea460..4301bb9 100644
> > --- a/e2fsck/pass1.c
> > +++ b/e2fsck/pass1.c
> > @@ -202,6 +202,16 @@ int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
> >  		return i;
> >  	}
> >  
> > +	if (inode->i_flags & EXT4_INLINE_DATA_FL) {
> > +		unsigned int inline_size;
> > +
> > +		inline_size = ext2fs_inline_data_get_size(fs, ino);
> > +		if (inline_size == inode->i_size)
> > +			return 1;
> > +		else
> > +			return 0;
> > +	}
> > +
> >  	blocks = ext2fs_inode_data_blocks2(fs, inode);
> >  	if (blocks) {
> >  		if ((inode->i_size >= fs->blocksize) ||
> > @@ -303,6 +313,15 @@ static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
> >  			goto fix;
> >  		}
> >  
> > +		/*
> > +		 * Don't do the following checks for inline_data because
> > +		 * other checks ensure the content of inline data right.
> > +		 */
> > +		if (strncmp(EXT2_EXT_ATTR_NAME(entry),
> > +		    EXT4_EXT_ATTR_SYSTEM_DATA,
> > +		    strlen(EXT4_EXT_ATTR_SYSTEM_DATA)) == 0)
> 
> Please align arguments 2 and 3 with argument 1 of strcmp.

Good catch.  I will fix it.

Thanks,
                                                - Zheng

> 
> --D
> > +			goto next;
> > +
> >  		/* attribute len eats this space */
> >  		remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
> >  
> > @@ -330,6 +349,7 @@ static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
> >  			goto fix;
> >  		}
> >  
> > +next:
> >  		remain -= entry->e_value_size;
> >  
> >  		entry = EXT2_EXT_ATTR_NEXT(entry);
> > @@ -407,6 +427,7 @@ static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
> >  	blk64_t			blk;
> >  	unsigned int		i, rec_len, not_device = 0;
> >  	int			extent_fs;
> > +	int			inlinedata_fs;
> >  
> >  	/*
> >  	 * If the mode looks OK, we believe it.  If the first block in
> > @@ -434,11 +455,19 @@ static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
> >  	 * For extent mapped files, we don't do any sanity checking:
> >  	 * just try to get the phys block of logical block 0 and run
> >  	 * with it.
> > +	 *
> > +	 * For inline_data files, we just skip it because, in e2fsck
> > +	 * pass1, we cannot get parent inode of a inode.  So we have
> > +	 * no way to determine the inode is a directory or not.
> >  	 */
> >  
> >  	extent_fs = (ctx->fs->super->s_feature_incompat &
> >  		     EXT3_FEATURE_INCOMPAT_EXTENTS);
> > -	if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
> > +	inlinedata_fs = (ctx->fs->super->s_feature_incompat &
> > +			EXT4_FEATURE_INCOMPAT_INLINE_DATA);
> > +	if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
> > +		return;
> > +	else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
> >  		/* extent mapped */
> >  		if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
> >  				 &blk))
> > @@ -1205,7 +1234,8 @@ void e2fsck_pass1(e2fsck_t ctx)
> >  			ctx->fs_sockets_count++;
> >  		} else
> >  			mark_inode_bad(ctx, ino);
> > -		if (!(inode->i_flags & EXT4_EXTENTS_FL)) {
> > +		if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
> > +		    !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
> >  			if (inode->i_block[EXT2_IND_BLOCK])
> >  				ctx->fs_ind_count++;
> >  			if (inode->i_block[EXT2_DIND_BLOCK])
> > @@ -1214,6 +1244,7 @@ void e2fsck_pass1(e2fsck_t ctx)
> >  				ctx->fs_tind_count++;
> >  		}
> >  		if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
> > +		    !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
> >  		    (inode->i_block[EXT2_IND_BLOCK] ||
> >  		     inode->i_block[EXT2_DIND_BLOCK] ||
> >  		     inode->i_block[EXT2_TIND_BLOCK] ||
> > @@ -2129,6 +2160,28 @@ static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
> >  }
> >  
> >  /*
> > + * In fact we needn't check blocks for a inode that has inline data because
> > + * this inode doesn't have any blocks.  In this function, all we need to do
> > + * is add this inode into dblist when it is a directory.
> > + */
> > +static void check_blocks_inline_data(e2fsck_t ctx,
> > +				     struct problem_context *pctx,
> > +				     struct process_block_struct *pb)
> > +{
> > +	if (!pb->is_dir)
> > +		return;
> > +
> > +	pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist,
> > +					      pb->ino, 0, 0);
> > +	if (pctx->errcode) {
> > +		pctx->blk = 0;
> > +		pctx->num = 0;
> > +		fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
> > +		ctx->flags |= E2F_FLAG_ABORT;
> > +	}
> > +}
> > +
> > +/*
> >   * This subroutine is called on each inode to account for all of the
> >   * blocks used by that inode.
> >   */
> > @@ -2142,6 +2195,7 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
> >  	int		bad_size = 0;
> >  	int		dirty_inode = 0;
> >  	int		extent_fs;
> > +	int		inlinedata_fs;
> >  	__u64		size;
> >  
> >  	pb.ino = ino;
> > @@ -2165,6 +2219,8 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
> >  
> >  	extent_fs = (ctx->fs->super->s_feature_incompat &
> >                       EXT3_FEATURE_INCOMPAT_EXTENTS);
> > +	inlinedata_fs = (ctx->fs->super->s_feature_incompat &
> > +			 EXT4_FEATURE_INCOMPAT_INLINE_DATA);
> >  
> >  	if (inode->i_flags & EXT2_COMPRBLK_FL) {
> >  		if (fs->super->s_feature_incompat &
> > @@ -2188,6 +2244,9 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
> >  	if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
> >  		if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
> >  			check_blocks_extents(ctx, pctx, &pb);
> > +		else if (inlinedata_fs &&
> > +			 (inode->i_flags & EXT4_INLINE_DATA_FL))
> > +			check_blocks_inline_data(ctx, pctx, &pb);
> >  		else {
> >  			pctx->errcode = ext2fs_block_iterate3(fs, ino,
> >  						pb.is_dir ? BLOCK_FLAG_HOLE : 0,
> > @@ -2230,7 +2289,8 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
> >  		}
> >  	}
> >  
> > -	if (!pb.num_blocks && pb.is_dir) {
> > +	if (!pb.num_blocks && pb.is_dir &&
> > +	    !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
> >  		if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
> >  			e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
> >  			ctx->fs_directory_count--;
> > @@ -2256,7 +2316,9 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
> >  #endif
> >  	if (pb.is_dir) {
> >  		int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
> > -		if (inode->i_size & (fs->blocksize - 1))
> > +		if (inode->i_flags & EXT4_INLINE_DATA_FL)
> > +			;
> > +		else if (inode->i_size & (fs->blocksize - 1))
> >  			bad_size = 5;
> >  		else if (nblock > (pb.last_block + 1))
> >  			bad_size = 1;
> > diff --git a/lib/ext2fs/dblist_dir.c b/lib/ext2fs/dblist_dir.c
> > index d4d5111..6282ab4 100644
> > --- a/lib/ext2fs/dblist_dir.c
> > +++ b/lib/ext2fs/dblist_dir.c
> > @@ -72,8 +72,14 @@ static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry2 *db_info,
> >  	ctx->dir = db_info->ino;
> >  	ctx->errcode = 0;
> >  
> > -	ret = ext2fs_process_dir_block(fs, &db_info->blk,
> > -				       db_info->blockcnt, 0, 0, priv_data);
> > +	if (ext2fs_inode_has_inline_data(fs, ctx->dir))
> > +		ret = ext2fs_inline_data_iterate(fs, ctx->dir, 0, 0,
> > +						 ext2fs_process_dir_inline_data,
> > +						 priv_data);
> > +	else
> > +		ret = ext2fs_process_dir_block(fs, &db_info->blk,
> > +					       db_info->blockcnt,
> > +					       0, 0, priv_data);
> >  	if ((ret & BLOCK_ABORT) && !ctx->errcode)
> >  		return DBLIST_ABORT;
> >  	return 0;
> > -- 
> > 1.7.9.7
> > 
> > --
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