xfs: pass attr geometry to attr leaf header conversion functions

The firstused field of the xfs_attr3_leaf_hdr structure is subject to an
overflow when fs blocksize is 64k. In preparation to handle this
overflow in the header conversion functions, pass the attribute geometry
to the functions that convert the in-core structure to and from the
on-disk structure.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

2 files changed, 38 insertions, 31 deletions

diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
index 15105dbc9e28..3337516feeb0 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.c
+++ b/fs/xfs/libxfs/xfs_attr_leaf.c
@@ -88,6 +88,7 @@ STATIC int xfs_attr_leaf_entsize(xfs_attr_leafblock_t *leaf, int index);
 
 void
 xfs_attr3_leaf_hdr_from_disk(
+	struct xfs_da_geometry		*geo,
 	struct xfs_attr3_icleaf_hdr	*to,
 	struct xfs_attr_leafblock	*from)
 {
@@ -129,6 +130,7 @@ xfs_attr3_leaf_hdr_from_disk(
 
 void
 xfs_attr3_leaf_hdr_to_disk(
+	struct xfs_da_geometry		*geo,
 	struct xfs_attr_leafblock	*to,
 	struct xfs_attr3_icleaf_hdr	*from)
 {
@@ -178,7 +180,7 @@ xfs_attr3_leaf_verify(
 	struct xfs_attr_leafblock *leaf = bp->b_addr;
 	struct xfs_attr3_icleaf_hdr ichdr;
 
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr, leaf);
 
 	if (xfs_sb_version_hascrc(&mp->m_sb)) {
 		struct xfs_da3_node_hdr *hdr3 = bp->b_addr;
@@ -757,9 +759,10 @@ xfs_attr_shortform_allfit(
 	struct xfs_attr3_icleaf_hdr leafhdr;
 	int			bytes;
 	int			i;
+	struct xfs_mount	*mp = bp->b_target->bt_mount;
 
 	leaf = bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &leafhdr, leaf);
 	entry = xfs_attr3_leaf_entryp(leaf);
 
 	bytes = sizeof(struct xfs_attr_sf_hdr);
@@ -812,7 +815,7 @@ xfs_attr3_leaf_to_shortform(
 	memcpy(tmpbuffer, bp->b_addr, args->geo->blksize);
 
 	leaf = (xfs_attr_leafblock_t *)tmpbuffer;
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
 	entry = xfs_attr3_leaf_entryp(leaf);
 
 	/* XXX (dgc): buffer is about to be marked stale - why zero it? */
@@ -923,7 +926,7 @@ xfs_attr3_leaf_to_node(
 	btree = dp->d_ops->node_tree_p(node);
 
 	leaf = bp2->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&icleafhdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &icleafhdr, leaf);
 	entries = xfs_attr3_leaf_entryp(leaf);
 
 	/* both on-disk, don't endian-flip twice */
@@ -988,7 +991,7 @@ xfs_attr3_leaf_create(
 	}
 	ichdr.freemap[0].size = ichdr.firstused - ichdr.freemap[0].base;
 
-	xfs_attr3_leaf_hdr_to_disk(leaf, &ichdr);
+	xfs_attr3_leaf_hdr_to_disk(args->geo, leaf, &ichdr);
 	xfs_trans_log_buf(args->trans, bp, 0, args->geo->blksize - 1);
 
 	*bpp = bp;
@@ -1073,7 +1076,7 @@ xfs_attr3_leaf_add(
 	trace_xfs_attr_leaf_add(args);
 
 	leaf = bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
 	ASSERT(args->index >= 0 && args->index <= ichdr.count);
 	entsize = xfs_attr_leaf_newentsize(args, NULL);
 
@@ -1126,7 +1129,7 @@ xfs_attr3_leaf_add(
 	tmp = xfs_attr3_leaf_add_work(bp, &ichdr, args, 0);
 
 out_log_hdr:
-	xfs_attr3_leaf_hdr_to_disk(leaf, &ichdr);
+	xfs_attr3_leaf_hdr_to_disk(args->geo, leaf, &ichdr);
 	xfs_trans_log_buf(args->trans, bp,
 		XFS_DA_LOGRANGE(leaf, &leaf->hdr,
 				xfs_attr3_leaf_hdr_size(leaf)));
@@ -1294,7 +1297,7 @@ xfs_attr3_leaf_compact(
 						ichdr_dst->freemap[0].base;
 
 	/* write the header back to initialise the underlying buffer */
-	xfs_attr3_leaf_hdr_to_disk(leaf_dst, ichdr_dst);
+	xfs_attr3_leaf_hdr_to_disk(args->geo, leaf_dst, ichdr_dst);
 
 	/*
 	 * Copy all entry's in the same (sorted) order,
@@ -1344,9 +1347,10 @@ xfs_attr_leaf_order(
 {
 	struct xfs_attr3_icleaf_hdr ichdr1;
 	struct xfs_attr3_icleaf_hdr ichdr2;
+	struct xfs_mount *mp = leaf1_bp->b_target->bt_mount;
 
-	xfs_attr3_leaf_hdr_from_disk(&ichdr1, leaf1_bp->b_addr);
-	xfs_attr3_leaf_hdr_from_disk(&ichdr2, leaf2_bp->b_addr);
+	xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr1, leaf1_bp->b_addr);
+	xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr2, leaf2_bp->b_addr);
 	return xfs_attr3_leaf_order(leaf1_bp, &ichdr1, leaf2_bp, &ichdr2);
 }
 
@@ -1388,8 +1392,8 @@ xfs_attr3_leaf_rebalance(
 	ASSERT(blk2->magic == XFS_ATTR_LEAF_MAGIC);
 	leaf1 = blk1->bp->b_addr;
 	leaf2 = blk2->bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&ichdr1, leaf1);
-	xfs_attr3_leaf_hdr_from_disk(&ichdr2, leaf2);
+	xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr1, leaf1);
+	xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr2, leaf2);
 	ASSERT(ichdr2.count == 0);
 	args = state->args;
 
@@ -1490,8 +1494,8 @@ xfs_attr3_leaf_rebalance(
 					ichdr1.count, count);
 	}
 
-	xfs_attr3_leaf_hdr_to_disk(leaf1, &ichdr1);
-	xfs_attr3_leaf_hdr_to_disk(leaf2, &ichdr2);
+	xfs_attr3_leaf_hdr_to_disk(state->args->geo, leaf1, &ichdr1);
+	xfs_attr3_leaf_hdr_to_disk(state->args->geo, leaf2, &ichdr2);
 	xfs_trans_log_buf(args->trans, blk1->bp, 0, args->geo->blksize - 1);
 	xfs_trans_log_buf(args->trans, blk2->bp, 0, args->geo->blksize - 1);
 
@@ -1684,7 +1688,7 @@ xfs_attr3_leaf_toosmall(
 	 */
 	blk = &state->path.blk[ state->path.active-1 ];
 	leaf = blk->bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr, leaf);
 	bytes = xfs_attr3_leaf_hdr_size(leaf) +
 		ichdr.count * sizeof(xfs_attr_leaf_entry_t) +
 		ichdr.usedbytes;
@@ -1740,7 +1744,7 @@ xfs_attr3_leaf_toosmall(
 		if (error)
 			return error;
 
-		xfs_attr3_leaf_hdr_from_disk(&ichdr2, bp->b_addr);
+		xfs_attr3_leaf_hdr_from_disk(state->args->geo, &ichdr2, bp->b_addr);
 
 		bytes = state->args->geo->blksize -
 			(state->args->geo->blksize >> 2) -
@@ -1805,7 +1809,7 @@ xfs_attr3_leaf_remove(
 	trace_xfs_attr_leaf_remove(args);
 
 	leaf = bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
 
 	ASSERT(ichdr.count > 0 && ichdr.count < args->geo->blksize / 8);
 	ASSERT(args->index >= 0 && args->index < ichdr.count);
@@ -1923,7 +1927,7 @@ xfs_attr3_leaf_remove(
 	} else {
 		ichdr.holes = 1;	/* mark as needing compaction */
 	}
-	xfs_attr3_leaf_hdr_to_disk(leaf, &ichdr);
+	xfs_attr3_leaf_hdr_to_disk(args->geo, leaf, &ichdr);
 	xfs_trans_log_buf(args->trans, bp,
 			  XFS_DA_LOGRANGE(leaf, &leaf->hdr,
 					  xfs_attr3_leaf_hdr_size(leaf)));
@@ -1957,8 +1961,8 @@ xfs_attr3_leaf_unbalance(
 
 	drop_leaf = drop_blk->bp->b_addr;
 	save_leaf = save_blk->bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&drophdr, drop_leaf);
-	xfs_attr3_leaf_hdr_from_disk(&savehdr, save_leaf);
+	xfs_attr3_leaf_hdr_from_disk(state->args->geo, &drophdr, drop_leaf);
+	xfs_attr3_leaf_hdr_from_disk(state->args->geo, &savehdr, save_leaf);
 	entry = xfs_attr3_leaf_entryp(drop_leaf);
 
 	/*
@@ -2012,7 +2016,7 @@ xfs_attr3_leaf_unbalance(
 		tmphdr.firstused = state->args->geo->blksize;
 
 		/* write the header to the temp buffer to initialise it */
-		xfs_attr3_leaf_hdr_to_disk(tmp_leaf, &tmphdr);
+		xfs_attr3_leaf_hdr_to_disk(state->args->geo, tmp_leaf, &tmphdr);
 
 		if (xfs_attr3_leaf_order(save_blk->bp, &savehdr,
 					 drop_blk->bp, &drophdr)) {
@@ -2039,7 +2043,7 @@ xfs_attr3_leaf_unbalance(
 		kmem_free(tmp_leaf);
 	}
 
-	xfs_attr3_leaf_hdr_to_disk(save_leaf, &savehdr);
+	xfs_attr3_leaf_hdr_to_disk(state->args->geo, save_leaf, &savehdr);
 	xfs_trans_log_buf(state->args->trans, save_blk->bp, 0,
 					   state->args->geo->blksize - 1);
 
@@ -2085,7 +2089,7 @@ xfs_attr3_leaf_lookup_int(
 	trace_xfs_attr_leaf_lookup(args);
 
 	leaf = bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
 	entries = xfs_attr3_leaf_entryp(leaf);
 	ASSERT(ichdr.count < args->geo->blksize / 8);
 
@@ -2190,7 +2194,7 @@ xfs_attr3_leaf_getvalue(
 	int			valuelen;
 
 	leaf = bp->b_addr;
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
 	ASSERT(ichdr.count < args->geo->blksize / 8);
 	ASSERT(args->index < ichdr.count);
 
@@ -2391,8 +2395,9 @@ xfs_attr_leaf_lasthash(
 {
 	struct xfs_attr3_icleaf_hdr ichdr;
 	struct xfs_attr_leaf_entry *entries;
+	struct xfs_mount *mp = bp->b_target->bt_mount;
 
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, bp->b_addr);
+	xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr, bp->b_addr);
 	entries = xfs_attr3_leaf_entryp(bp->b_addr);
 	if (count)
 		*count = ichdr.count;
@@ -2486,7 +2491,7 @@ xfs_attr3_leaf_clearflag(
 	ASSERT(entry->flags & XFS_ATTR_INCOMPLETE);
 
 #ifdef DEBUG
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
 	ASSERT(args->index < ichdr.count);
 	ASSERT(args->index >= 0);
 
@@ -2550,7 +2555,7 @@ xfs_attr3_leaf_setflag(
 
 	leaf = bp->b_addr;
 #ifdef DEBUG
-	xfs_attr3_leaf_hdr_from_disk(&ichdr, leaf);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr, leaf);
 	ASSERT(args->index < ichdr.count);
 	ASSERT(args->index >= 0);
 #endif
@@ -2629,11 +2634,11 @@ xfs_attr3_leaf_flipflags(
 	entry2 = &xfs_attr3_leaf_entryp(leaf2)[args->index2];
 
 #ifdef DEBUG
-	xfs_attr3_leaf_hdr_from_disk(&ichdr1, leaf1);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr1, leaf1);
 	ASSERT(args->index < ichdr1.count);
 	ASSERT(args->index >= 0);
 
-	xfs_attr3_leaf_hdr_from_disk(&ichdr2, leaf2);
+	xfs_attr3_leaf_hdr_from_disk(args->geo, &ichdr2, leaf2);
 	ASSERT(args->index2 < ichdr2.count);
 	ASSERT(args->index2 >= 0);
 
diff --git a/fs/xfs/libxfs/xfs_attr_leaf.h b/fs/xfs/libxfs/xfs_attr_leaf.h
index e2929da7c3ba..025c4b820c03 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.h
+++ b/fs/xfs/libxfs/xfs_attr_leaf.h
@@ -100,9 +100,11 @@ int	xfs_attr_leaf_newentsize(struct xfs_da_args *args, int *local);
 int	xfs_attr3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp,
 			xfs_dablk_t bno, xfs_daddr_t mappedbno,
 			struct xfs_buf **bpp);
-void	xfs_attr3_leaf_hdr_from_disk(struct xfs_attr3_icleaf_hdr *to,
+void	xfs_attr3_leaf_hdr_from_disk(struct xfs_da_geometry *geo,
+				     struct xfs_attr3_icleaf_hdr *to,
 				     struct xfs_attr_leafblock *from);
-void	xfs_attr3_leaf_hdr_to_disk(struct xfs_attr_leafblock *to,
+void	xfs_attr3_leaf_hdr_to_disk(struct xfs_da_geometry *geo,
+				   struct xfs_attr_leafblock *to,
 				   struct xfs_attr3_icleaf_hdr *from);
 
 #endif	/* __XFS_ATTR_LEAF_H__ */