Patchwork [09/25] e2fsck: teach EA refcounting code to handle 64bit block addresses

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Submitter Darrick J. Wong
Date Oct. 18, 2013, 4:49 a.m.
Message ID <20131018044955.7339.72152.stgit@birch.djwong.org>
Download mbox | patch
Permalink /patch/284416/
State Superseded
Headers show

Comments

Darrick J. Wong - Oct. 18, 2013, 4:49 a.m.
The extended attribute refcounting code only accepts blk_t, which is
dangerous because EA blocks can exist at high addresses (> 2^32) as
well.  Therefore, widen the block fields to 64 bits.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 e2fsck/e2fsck.h      |   12 ++++++------
 e2fsck/ea_refcount.c |   36 ++++++++++++++++++------------------
 2 files changed, 24 insertions(+), 24 deletions(-)



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Darrick J. Wong - Oct. 18, 2013, 6:37 p.m.
On Thu, Oct 17, 2013 at 09:49:55PM -0700, Darrick J. Wong wrote:
> The extended attribute refcounting code only accepts blk_t, which is
> dangerous because EA blocks can exist at high addresses (> 2^32) as
> well.  Therefore, widen the block fields to 64 bits.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---
>  e2fsck/e2fsck.h      |   12 ++++++------
>  e2fsck/ea_refcount.c |   36 ++++++++++++++++++------------------
>  2 files changed, 24 insertions(+), 24 deletions(-)
> 
> 
> diff --git a/e2fsck/e2fsck.h b/e2fsck/e2fsck.h
> index 13d70f1..f1df525 100644
> --- a/e2fsck/e2fsck.h
> +++ b/e2fsck/e2fsck.h
> @@ -432,17 +432,17 @@ extern struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx, int *control);
>  /* ea_refcount.c */
>  extern errcode_t ea_refcount_create(int size, ext2_refcount_t *ret);
>  extern void ea_refcount_free(ext2_refcount_t refcount);
> -extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
> +extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk64_t blk,
>  				   int *ret);
>  extern errcode_t ea_refcount_increment(ext2_refcount_t refcount,
> -				       blk_t blk, int *ret);
> +				       blk64_t blk, int *ret);
>  extern errcode_t ea_refcount_decrement(ext2_refcount_t refcount,
> -				       blk_t blk, int *ret);
> +				       blk64_t blk, int *ret);
>  extern errcode_t ea_refcount_store(ext2_refcount_t refcount,
> -				   blk_t blk, int count);
> -extern blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
> +				   blk64_t blk, int count);
> +extern blk64_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
>  extern void ea_refcount_intr_begin(ext2_refcount_t refcount);
> -extern blk_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
> +extern blk64_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
>  
>  /* ehandler.c */
>  extern const char *ehandler_operation(const char *op);
> diff --git a/e2fsck/ea_refcount.c b/e2fsck/ea_refcount.c
> index e66e636..6f376a3 100644
> --- a/e2fsck/ea_refcount.c
> +++ b/e2fsck/ea_refcount.c
> @@ -25,14 +25,14 @@
>   * checked, its bit is set in the block_ea_map bitmap.
>   */
>  struct ea_refcount_el {
> -	blk_t	ea_blk;
> +	blk64_t	ea_blk;
>  	int	ea_count;
>  };
>  
>  struct ea_refcount {
> -	blk_t		count;
> -	blk_t		size;
> -	blk_t		cursor;
> +	unsigned long		count;
> +	unsigned long		size;
> +	unsigned long		cursor;

This (unsigned long instead of blk_t) is the only thing that changed since last
time.

--D

>  	struct ea_refcount_el	*list;
>  };
>  
> @@ -111,11 +111,11 @@ static void refcount_collapse(ext2_refcount_t refcount)
>   * 	specified position.
>   */
>  static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
> -						 blk_t blk, int pos)
> +						 blk64_t blk, int pos)
>  {
>  	struct ea_refcount_el 	*el;
>  	errcode_t		retval;
> -	blk_t			new_size = 0;
> +	blk64_t			new_size = 0;
>  	int			num;
>  
>  	if (refcount->count >= refcount->size) {
> @@ -153,7 +153,7 @@ static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
>   * 	and we can't find an entry, create one in the sorted list.
>   */
>  static struct ea_refcount_el *get_refcount_el(ext2_refcount_t refcount,
> -					      blk_t blk, int create)
> +					      blk64_t blk, int create)
>  {
>  	int	low, high, mid;
>  
> @@ -206,7 +206,7 @@ retry:
>  	return 0;
>  }
>  
> -errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
> +errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk64_t blk,
>  				int *ret)
>  {
>  	struct ea_refcount_el	*el;
> @@ -220,7 +220,7 @@ errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
>  	return 0;
>  }
>  
> -errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
> +errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk64_t blk, int *ret)
>  {
>  	struct ea_refcount_el	*el;
>  
> @@ -234,7 +234,7 @@ errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
>  	return 0;
>  }
>  
> -errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
> +errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk64_t blk, int *ret)
>  {
>  	struct ea_refcount_el	*el;
>  
> @@ -249,7 +249,7 @@ errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
>  	return 0;
>  }
>  
> -errcode_t ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
> +errcode_t ea_refcount_store(ext2_refcount_t refcount, blk64_t blk, int count)
>  {
>  	struct ea_refcount_el	*el;
>  
> @@ -263,7 +263,7 @@ errcode_t ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
>  	return 0;
>  }
>  
> -blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount)
> +blk64_t ext2fs_get_refcount_size(ext2_refcount_t refcount)
>  {
>  	if (!refcount)
>  		return 0;
> @@ -277,7 +277,7 @@ void ea_refcount_intr_begin(ext2_refcount_t refcount)
>  }
>  
>  
> -blk_t ea_refcount_intr_next(ext2_refcount_t refcount,
> +blk64_t ea_refcount_intr_next(ext2_refcount_t refcount,
>  				int *ret)
>  {
>  	struct ea_refcount_el	*list;
> @@ -370,7 +370,7 @@ int main(int argc, char **argv)
>  	int	i = 0;
>  	ext2_refcount_t refcount;
>  	int		size, arg;
> -	blk_t		blk;
> +	blk64_t		blk;
>  	errcode_t	retval;
>  
>  	while (1) {
> @@ -394,7 +394,7 @@ int main(int argc, char **argv)
>  			printf("Freeing refcount\n");
>  			break;
>  		case BCODE_STORE:
> -			blk = (blk_t) bcode_program[i++];
> +			blk = (blk64_t) bcode_program[i++];
>  			arg = bcode_program[i++];
>  			printf("Storing blk %u with value %d\n", blk, arg);
>  			retval = ea_refcount_store(refcount, blk, arg);
> @@ -403,7 +403,7 @@ int main(int argc, char **argv)
>  					"while storing blk %u", blk);
>  			break;
>  		case BCODE_FETCH:
> -			blk = (blk_t) bcode_program[i++];
> +			blk = (blk64_t) bcode_program[i++];
>  			retval = ea_refcount_fetch(refcount, blk, &arg);
>  			if (retval)
>  				com_err("ea_refcount_fetch", retval,
> @@ -413,7 +413,7 @@ int main(int argc, char **argv)
>  				       blk, arg);
>  			break;
>  		case BCODE_INCR:
> -			blk = (blk_t) bcode_program[i++];
> +			blk = (blk64_t) bcode_program[i++];
>  			retval = ea_refcount_increment(refcount, blk, &arg);
>  			if (retval)
>  				com_err("ea_refcount_increment", retval,
> @@ -423,7 +423,7 @@ int main(int argc, char **argv)
>  				       blk, arg);
>  			break;
>  		case BCODE_DECR:
> -			blk = (blk_t) bcode_program[i++];
> +			blk = (blk64_t) bcode_program[i++];
>  			retval = ea_refcount_decrement(refcount, blk, &arg);
>  			if (retval)
>  				com_err("ea_refcount_decrement", retval,
> 
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Zheng Liu - Nov. 25, 2013, 8:18 a.m.
On Fri, Oct 18, 2013 at 11:37:00AM -0700, Darrick J. Wong wrote:
> On Thu, Oct 17, 2013 at 09:49:55PM -0700, Darrick J. Wong wrote:
> > The extended attribute refcounting code only accepts blk_t, which is
> > dangerous because EA blocks can exist at high addresses (> 2^32) as
> > well.  Therefore, widen the block fields to 64 bits.
> > 
> > Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>

                                                - Zheng

> > ---
> >  e2fsck/e2fsck.h      |   12 ++++++------
> >  e2fsck/ea_refcount.c |   36 ++++++++++++++++++------------------
> >  2 files changed, 24 insertions(+), 24 deletions(-)
> > 
> > 
> > diff --git a/e2fsck/e2fsck.h b/e2fsck/e2fsck.h
> > index 13d70f1..f1df525 100644
> > --- a/e2fsck/e2fsck.h
> > +++ b/e2fsck/e2fsck.h
> > @@ -432,17 +432,17 @@ extern struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx, int *control);
> >  /* ea_refcount.c */
> >  extern errcode_t ea_refcount_create(int size, ext2_refcount_t *ret);
> >  extern void ea_refcount_free(ext2_refcount_t refcount);
> > -extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
> > +extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk64_t blk,
> >  				   int *ret);
> >  extern errcode_t ea_refcount_increment(ext2_refcount_t refcount,
> > -				       blk_t blk, int *ret);
> > +				       blk64_t blk, int *ret);
> >  extern errcode_t ea_refcount_decrement(ext2_refcount_t refcount,
> > -				       blk_t blk, int *ret);
> > +				       blk64_t blk, int *ret);
> >  extern errcode_t ea_refcount_store(ext2_refcount_t refcount,
> > -				   blk_t blk, int count);
> > -extern blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
> > +				   blk64_t blk, int count);
> > +extern blk64_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
> >  extern void ea_refcount_intr_begin(ext2_refcount_t refcount);
> > -extern blk_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
> > +extern blk64_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
> >  
> >  /* ehandler.c */
> >  extern const char *ehandler_operation(const char *op);
> > diff --git a/e2fsck/ea_refcount.c b/e2fsck/ea_refcount.c
> > index e66e636..6f376a3 100644
> > --- a/e2fsck/ea_refcount.c
> > +++ b/e2fsck/ea_refcount.c
> > @@ -25,14 +25,14 @@
> >   * checked, its bit is set in the block_ea_map bitmap.
> >   */
> >  struct ea_refcount_el {
> > -	blk_t	ea_blk;
> > +	blk64_t	ea_blk;
> >  	int	ea_count;
> >  };
> >  
> >  struct ea_refcount {
> > -	blk_t		count;
> > -	blk_t		size;
> > -	blk_t		cursor;
> > +	unsigned long		count;
> > +	unsigned long		size;
> > +	unsigned long		cursor;
> 
> This (unsigned long instead of blk_t) is the only thing that changed since last
> time.
> 
> --D
> 
> >  	struct ea_refcount_el	*list;
> >  };
> >  
> > @@ -111,11 +111,11 @@ static void refcount_collapse(ext2_refcount_t refcount)
> >   * 	specified position.
> >   */
> >  static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
> > -						 blk_t blk, int pos)
> > +						 blk64_t blk, int pos)
> >  {
> >  	struct ea_refcount_el 	*el;
> >  	errcode_t		retval;
> > -	blk_t			new_size = 0;
> > +	blk64_t			new_size = 0;
> >  	int			num;
> >  
> >  	if (refcount->count >= refcount->size) {
> > @@ -153,7 +153,7 @@ static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
> >   * 	and we can't find an entry, create one in the sorted list.
> >   */
> >  static struct ea_refcount_el *get_refcount_el(ext2_refcount_t refcount,
> > -					      blk_t blk, int create)
> > +					      blk64_t blk, int create)
> >  {
> >  	int	low, high, mid;
> >  
> > @@ -206,7 +206,7 @@ retry:
> >  	return 0;
> >  }
> >  
> > -errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
> > +errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk64_t blk,
> >  				int *ret)
> >  {
> >  	struct ea_refcount_el	*el;
> > @@ -220,7 +220,7 @@ errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
> >  	return 0;
> >  }
> >  
> > -errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
> > +errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk64_t blk, int *ret)
> >  {
> >  	struct ea_refcount_el	*el;
> >  
> > @@ -234,7 +234,7 @@ errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
> >  	return 0;
> >  }
> >  
> > -errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
> > +errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk64_t blk, int *ret)
> >  {
> >  	struct ea_refcount_el	*el;
> >  
> > @@ -249,7 +249,7 @@ errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
> >  	return 0;
> >  }
> >  
> > -errcode_t ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
> > +errcode_t ea_refcount_store(ext2_refcount_t refcount, blk64_t blk, int count)
> >  {
> >  	struct ea_refcount_el	*el;
> >  
> > @@ -263,7 +263,7 @@ errcode_t ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
> >  	return 0;
> >  }
> >  
> > -blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount)
> > +blk64_t ext2fs_get_refcount_size(ext2_refcount_t refcount)
> >  {
> >  	if (!refcount)
> >  		return 0;
> > @@ -277,7 +277,7 @@ void ea_refcount_intr_begin(ext2_refcount_t refcount)
> >  }
> >  
> >  
> > -blk_t ea_refcount_intr_next(ext2_refcount_t refcount,
> > +blk64_t ea_refcount_intr_next(ext2_refcount_t refcount,
> >  				int *ret)
> >  {
> >  	struct ea_refcount_el	*list;
> > @@ -370,7 +370,7 @@ int main(int argc, char **argv)
> >  	int	i = 0;
> >  	ext2_refcount_t refcount;
> >  	int		size, arg;
> > -	blk_t		blk;
> > +	blk64_t		blk;
> >  	errcode_t	retval;
> >  
> >  	while (1) {
> > @@ -394,7 +394,7 @@ int main(int argc, char **argv)
> >  			printf("Freeing refcount\n");
> >  			break;
> >  		case BCODE_STORE:
> > -			blk = (blk_t) bcode_program[i++];
> > +			blk = (blk64_t) bcode_program[i++];
> >  			arg = bcode_program[i++];
> >  			printf("Storing blk %u with value %d\n", blk, arg);
> >  			retval = ea_refcount_store(refcount, blk, arg);
> > @@ -403,7 +403,7 @@ int main(int argc, char **argv)
> >  					"while storing blk %u", blk);
> >  			break;
> >  		case BCODE_FETCH:
> > -			blk = (blk_t) bcode_program[i++];
> > +			blk = (blk64_t) bcode_program[i++];
> >  			retval = ea_refcount_fetch(refcount, blk, &arg);
> >  			if (retval)
> >  				com_err("ea_refcount_fetch", retval,
> > @@ -413,7 +413,7 @@ int main(int argc, char **argv)
> >  				       blk, arg);
> >  			break;
> >  		case BCODE_INCR:
> > -			blk = (blk_t) bcode_program[i++];
> > +			blk = (blk64_t) bcode_program[i++];
> >  			retval = ea_refcount_increment(refcount, blk, &arg);
> >  			if (retval)
> >  				com_err("ea_refcount_increment", retval,
> > @@ -423,7 +423,7 @@ int main(int argc, char **argv)
> >  				       blk, arg);
> >  			break;
> >  		case BCODE_DECR:
> > -			blk = (blk_t) bcode_program[i++];
> > +			blk = (blk64_t) bcode_program[i++];
> >  			retval = ea_refcount_decrement(refcount, blk, &arg);
> >  			if (retval)
> >  				com_err("ea_refcount_decrement", retval,
> > 
> --
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Patch

diff --git a/e2fsck/e2fsck.h b/e2fsck/e2fsck.h
index 13d70f1..f1df525 100644
--- a/e2fsck/e2fsck.h
+++ b/e2fsck/e2fsck.h
@@ -432,17 +432,17 @@  extern struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx, int *control);
 /* ea_refcount.c */
 extern errcode_t ea_refcount_create(int size, ext2_refcount_t *ret);
 extern void ea_refcount_free(ext2_refcount_t refcount);
-extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
+extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk64_t blk,
 				   int *ret);
 extern errcode_t ea_refcount_increment(ext2_refcount_t refcount,
-				       blk_t blk, int *ret);
+				       blk64_t blk, int *ret);
 extern errcode_t ea_refcount_decrement(ext2_refcount_t refcount,
-				       blk_t blk, int *ret);
+				       blk64_t blk, int *ret);
 extern errcode_t ea_refcount_store(ext2_refcount_t refcount,
-				   blk_t blk, int count);
-extern blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
+				   blk64_t blk, int count);
+extern blk64_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
 extern void ea_refcount_intr_begin(ext2_refcount_t refcount);
-extern blk_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
+extern blk64_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
 
 /* ehandler.c */
 extern const char *ehandler_operation(const char *op);
diff --git a/e2fsck/ea_refcount.c b/e2fsck/ea_refcount.c
index e66e636..6f376a3 100644
--- a/e2fsck/ea_refcount.c
+++ b/e2fsck/ea_refcount.c
@@ -25,14 +25,14 @@ 
  * checked, its bit is set in the block_ea_map bitmap.
  */
 struct ea_refcount_el {
-	blk_t	ea_blk;
+	blk64_t	ea_blk;
 	int	ea_count;
 };
 
 struct ea_refcount {
-	blk_t		count;
-	blk_t		size;
-	blk_t		cursor;
+	unsigned long		count;
+	unsigned long		size;
+	unsigned long		cursor;
 	struct ea_refcount_el	*list;
 };
 
@@ -111,11 +111,11 @@  static void refcount_collapse(ext2_refcount_t refcount)
  * 	specified position.
  */
 static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
-						 blk_t blk, int pos)
+						 blk64_t blk, int pos)
 {
 	struct ea_refcount_el 	*el;
 	errcode_t		retval;
-	blk_t			new_size = 0;
+	blk64_t			new_size = 0;
 	int			num;
 
 	if (refcount->count >= refcount->size) {
@@ -153,7 +153,7 @@  static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
  * 	and we can't find an entry, create one in the sorted list.
  */
 static struct ea_refcount_el *get_refcount_el(ext2_refcount_t refcount,
-					      blk_t blk, int create)
+					      blk64_t blk, int create)
 {
 	int	low, high, mid;
 
@@ -206,7 +206,7 @@  retry:
 	return 0;
 }
 
-errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
+errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk64_t blk,
 				int *ret)
 {
 	struct ea_refcount_el	*el;
@@ -220,7 +220,7 @@  errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
 	return 0;
 }
 
-errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
+errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk64_t blk, int *ret)
 {
 	struct ea_refcount_el	*el;
 
@@ -234,7 +234,7 @@  errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
 	return 0;
 }
 
-errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
+errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk64_t blk, int *ret)
 {
 	struct ea_refcount_el	*el;
 
@@ -249,7 +249,7 @@  errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
 	return 0;
 }
 
-errcode_t ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
+errcode_t ea_refcount_store(ext2_refcount_t refcount, blk64_t blk, int count)
 {
 	struct ea_refcount_el	*el;
 
@@ -263,7 +263,7 @@  errcode_t ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
 	return 0;
 }
 
-blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount)
+blk64_t ext2fs_get_refcount_size(ext2_refcount_t refcount)
 {
 	if (!refcount)
 		return 0;
@@ -277,7 +277,7 @@  void ea_refcount_intr_begin(ext2_refcount_t refcount)
 }
 
 
-blk_t ea_refcount_intr_next(ext2_refcount_t refcount,
+blk64_t ea_refcount_intr_next(ext2_refcount_t refcount,
 				int *ret)
 {
 	struct ea_refcount_el	*list;
@@ -370,7 +370,7 @@  int main(int argc, char **argv)
 	int	i = 0;
 	ext2_refcount_t refcount;
 	int		size, arg;
-	blk_t		blk;
+	blk64_t		blk;
 	errcode_t	retval;
 
 	while (1) {
@@ -394,7 +394,7 @@  int main(int argc, char **argv)
 			printf("Freeing refcount\n");
 			break;
 		case BCODE_STORE:
-			blk = (blk_t) bcode_program[i++];
+			blk = (blk64_t) bcode_program[i++];
 			arg = bcode_program[i++];
 			printf("Storing blk %u with value %d\n", blk, arg);
 			retval = ea_refcount_store(refcount, blk, arg);
@@ -403,7 +403,7 @@  int main(int argc, char **argv)
 					"while storing blk %u", blk);
 			break;
 		case BCODE_FETCH:
-			blk = (blk_t) bcode_program[i++];
+			blk = (blk64_t) bcode_program[i++];
 			retval = ea_refcount_fetch(refcount, blk, &arg);
 			if (retval)
 				com_err("ea_refcount_fetch", retval,
@@ -413,7 +413,7 @@  int main(int argc, char **argv)
 				       blk, arg);
 			break;
 		case BCODE_INCR:
-			blk = (blk_t) bcode_program[i++];
+			blk = (blk64_t) bcode_program[i++];
 			retval = ea_refcount_increment(refcount, blk, &arg);
 			if (retval)
 				com_err("ea_refcount_increment", retval,
@@ -423,7 +423,7 @@  int main(int argc, char **argv)
 				       blk, arg);
 			break;
 		case BCODE_DECR:
-			blk = (blk_t) bcode_program[i++];
+			blk = (blk64_t) bcode_program[i++];
 			retval = ea_refcount_decrement(refcount, blk, &arg);
 			if (retval)
 				com_err("ea_refcount_decrement", retval,