xfs: add CRCs to attr leaf blocks

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 69 insertions, 56 deletions

diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index 7afef2810e4..e7068754159 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -819,7 +819,7 @@ xfs_attr_inactive(xfs_inode_t *dp)
 		error = 0;
 		goto out;
 	}
-	error = xfs_attr_root_inactive(&trans, dp);
+	error = xfs_attr3_root_inactive(&trans, dp);
 	if (error)
 		goto out;
 
@@ -905,7 +905,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 	 */
 	dp = args->dp;
 	args->blkno = 0;
-	error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
+	error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
 	if (error)
 		return error;
 
@@ -913,14 +913,14 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 	 * Look up the given attribute in the leaf block.  Figure out if
 	 * the given flags produce an error or call for an atomic rename.
 	 */
-	retval = xfs_attr_leaf_lookup_int(bp, args);
+	retval = xfs_attr3_leaf_lookup_int(bp, args);
 	if ((args->flags & ATTR_REPLACE) && (retval == ENOATTR)) {
 		xfs_trans_brelse(args->trans, bp);
-		return(retval);
+		return retval;
 	} else if (retval == EEXIST) {
 		if (args->flags & ATTR_CREATE) {	/* pure create op */
 			xfs_trans_brelse(args->trans, bp);
-			return(retval);
+			return retval;
 		}
 
 		trace_xfs_attr_leaf_replace(args);
@@ -936,7 +936,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 	 * Add the attribute to the leaf block, transitioning to a Btree
 	 * if required.
 	 */
-	retval = xfs_attr_leaf_add(bp, args);
+	retval = xfs_attr3_leaf_add(bp, args);
 	if (retval == ENOSPC) {
 		/*
 		 * Promote the attribute list to the Btree format, then
@@ -944,7 +944,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 		 * can manage its own transactions.
 		 */
 		xfs_bmap_init(args->flist, args->firstblock);
-		error = xfs_attr_leaf_to_node(args);
+		error = xfs_attr3_leaf_to_node(args);
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
 						&committed);
@@ -1009,7 +1009,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 		 * In a separate transaction, set the incomplete flag on the
 		 * "old" attr and clear the incomplete flag on the "new" attr.
 		 */
-		error = xfs_attr_leaf_flipflags(args);
+		error = xfs_attr3_leaf_flipflags(args);
 		if (error)
 			return(error);
 
@@ -1031,19 +1031,19 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 		 * Read in the block containing the "old" attr, then
 		 * remove the "old" attr from that block (neat, huh!)
 		 */
-		error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno,
+		error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno,
 					   -1, &bp);
 		if (error)
 			return error;
 
-		xfs_attr_leaf_remove(bp, args);
+		xfs_attr3_leaf_remove(bp, args);
 
 		/*
 		 * If the result is small enough, shrink it all into the inode.
 		 */
 		if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
 			xfs_bmap_init(args->flist, args->firstblock);
-			error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
+			error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
 			/* bp is gone due to xfs_da_shrink_inode */
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
@@ -1075,9 +1075,9 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
 		/*
 		 * Added a "remote" value, just clear the incomplete flag.
 		 */
-		error = xfs_attr_leaf_clearflag(args);
+		error = xfs_attr3_leaf_clearflag(args);
 	}
-	return(error);
+	return error;
 }
 
 /*
@@ -1100,24 +1100,24 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
 	 */
 	dp = args->dp;
 	args->blkno = 0;
-	error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
+	error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
 	if (error)
 		return error;
 
-	error = xfs_attr_leaf_lookup_int(bp, args);
+	error = xfs_attr3_leaf_lookup_int(bp, args);
 	if (error == ENOATTR) {
 		xfs_trans_brelse(args->trans, bp);
-		return(error);
+		return error;
 	}
 
-	xfs_attr_leaf_remove(bp, args);
+	xfs_attr3_leaf_remove(bp, args);
 
 	/*
 	 * If the result is small enough, shrink it all into the inode.
 	 */
 	if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
 		xfs_bmap_init(args->flist, args->firstblock);
-		error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
+		error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
 		/* bp is gone due to xfs_da_shrink_inode */
 		if (!error) {
 			error = xfs_bmap_finish(&args->trans, args->flist,
@@ -1127,7 +1127,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
 			ASSERT(committed);
 			args->trans = NULL;
 			xfs_bmap_cancel(args->flist);
-			return(error);
+			return error;
 		}
 
 		/*
@@ -1137,7 +1137,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
 		if (committed)
 			xfs_trans_ijoin(args->trans, dp, 0);
 	}
-	return(0);
+	return 0;
 }
 
 /*
@@ -1155,21 +1155,21 @@ xfs_attr_leaf_get(xfs_da_args_t *args)
 	trace_xfs_attr_leaf_get(args);
 
 	args->blkno = 0;
-	error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
+	error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
 	if (error)
 		return error;
 
-	error = xfs_attr_leaf_lookup_int(bp, args);
+	error = xfs_attr3_leaf_lookup_int(bp, args);
 	if (error != EEXIST)  {
 		xfs_trans_brelse(args->trans, bp);
-		return(error);
+		return error;
 	}
-	error = xfs_attr_leaf_getvalue(bp, args);
+	error = xfs_attr3_leaf_getvalue(bp, args);
 	xfs_trans_brelse(args->trans, bp);
 	if (!error && (args->rmtblkno > 0) && !(args->flags & ATTR_KERNOVAL)) {
 		error = xfs_attr_rmtval_get(args);
 	}
-	return(error);
+	return error;
 }
 
 /*
@@ -1184,11 +1184,11 @@ xfs_attr_leaf_list(xfs_attr_list_context_t *context)
 	trace_xfs_attr_leaf_list(context);
 
 	context->cursor->blkno = 0;
-	error = xfs_attr_leaf_read(NULL, context->dp, 0, -1, &bp);
+	error = xfs_attr3_leaf_read(NULL, context->dp, 0, -1, &bp);
 	if (error)
 		return XFS_ERROR(error);
 
-	error = xfs_attr_leaf_list_int(bp, context);
+	error = xfs_attr3_leaf_list_int(bp, context);
 	xfs_trans_brelse(NULL, bp);
 	return XFS_ERROR(error);
 }
@@ -1257,7 +1257,7 @@ restart:
 		args->rmtblkcnt = 0;
 	}
 
-	retval = xfs_attr_leaf_add(blk->bp, state->args);
+	retval = xfs_attr3_leaf_add(blk->bp, state->args);
 	if (retval == ENOSPC) {
 		if (state->path.active == 1) {
 			/*
@@ -1267,7 +1267,7 @@ restart:
 			 */
 			xfs_da_state_free(state);
 			xfs_bmap_init(args->flist, args->firstblock);
-			error = xfs_attr_leaf_to_node(args);
+			error = xfs_attr3_leaf_to_node(args);
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
 							args->flist,
@@ -1369,7 +1369,7 @@ restart:
 		 * In a separate transaction, set the incomplete flag on the
 		 * "old" attr and clear the incomplete flag on the "new" attr.
 		 */
-		error = xfs_attr_leaf_flipflags(args);
+		error = xfs_attr3_leaf_flipflags(args);
 		if (error)
 			goto out;
 
@@ -1408,7 +1408,7 @@ restart:
 		 */
 		blk = &state->path.blk[ state->path.active-1 ];
 		ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
-		error = xfs_attr_leaf_remove(blk->bp, args);
+		error = xfs_attr3_leaf_remove(blk->bp, args);
 		xfs_da3_fixhashpath(state, &state->path);
 
 		/*
@@ -1449,7 +1449,7 @@ restart:
 		/*
 		 * Added a "remote" value, just clear the incomplete flag.
 		 */
-		error = xfs_attr_leaf_clearflag(args);
+		error = xfs_attr3_leaf_clearflag(args);
 		if (error)
 			goto out;
 	}
@@ -1523,7 +1523,7 @@ xfs_attr_node_removename(xfs_da_args_t *args)
 		 * Mark the attribute as INCOMPLETE, then bunmapi() the
 		 * remote value.
 		 */
-		error = xfs_attr_leaf_setflag(args);
+		error = xfs_attr3_leaf_setflag(args);
 		if (error)
 			goto out;
 		error = xfs_attr_rmtval_remove(args);
@@ -1544,7 +1544,7 @@ xfs_attr_node_removename(xfs_da_args_t *args)
 	 */
 	blk = &state->path.blk[ state->path.active-1 ];
 	ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
-	retval = xfs_attr_leaf_remove(blk->bp, args);
+	retval = xfs_attr3_leaf_remove(blk->bp, args);
 	xfs_da3_fixhashpath(state, &state->path);
 
 	/*
@@ -1590,13 +1590,13 @@ xfs_attr_node_removename(xfs_da_args_t *args)
 		ASSERT(state->path.blk[0].bp);
 		state->path.blk[0].bp = NULL;
 
-		error = xfs_attr_leaf_read(args->trans, args->dp, 0, -1, &bp);
+		error = xfs_attr3_leaf_read(args->trans, args->dp, 0, -1, &bp);
 		if (error)
 			goto out;
 
 		if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
 			xfs_bmap_init(args->flist, args->firstblock);
-			error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
+			error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
 			/* bp is gone due to xfs_da_shrink_inode */
 			if (!error) {
 				error = xfs_bmap_finish(&args->trans,
@@ -1768,7 +1768,7 @@ xfs_attr_node_get(xfs_da_args_t *args)
 		/*
 		 * Get the value, local or "remote"
 		 */
-		retval = xfs_attr_leaf_getvalue(blk->bp, args);
+		retval = xfs_attr3_leaf_getvalue(blk->bp, args);
 		if (!retval && (args->rmtblkno > 0)
 		    && !(args->flags & ATTR_KERNOVAL)) {
 			retval = xfs_attr_rmtval_get(args);
@@ -1793,7 +1793,9 @@ xfs_attr_node_list(xfs_attr_list_context_t *context)
 	attrlist_cursor_kern_t *cursor;
 	xfs_attr_leafblock_t *leaf;
 	xfs_da_intnode_t *node;
-	xfs_da_node_entry_t *btree;
+	struct xfs_attr3_icleaf_hdr leafhdr;
+	struct xfs_da3_icnode_hdr nodehdr;
+	struct xfs_da_node_entry *btree;
 	int error, i;
 	struct xfs_buf *bp;
 
@@ -1814,22 +1816,28 @@ xfs_attr_node_list(xfs_attr_list_context_t *context)
 		if ((error != 0) && (error != EFSCORRUPTED))
 			return(error);
 		if (bp) {
+			struct xfs_attr_leaf_entry *entries;
+
 			node = bp->b_addr;
 			switch (be16_to_cpu(node->hdr.info.magic)) {
 			case XFS_DA_NODE_MAGIC:
+			case XFS_DA3_NODE_MAGIC:
 				trace_xfs_attr_list_wrong_blk(context);
 				xfs_trans_brelse(NULL, bp);
 				bp = NULL;
 				break;
 			case XFS_ATTR_LEAF_MAGIC:
+			case XFS_ATTR3_LEAF_MAGIC:
 				leaf = bp->b_addr;
-				if (cursor->hashval > be32_to_cpu(leaf->entries[
-				    be16_to_cpu(leaf->hdr.count)-1].hashval)) {
+				xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf);
+				entries = xfs_attr3_leaf_entryp(leaf);
+				if (cursor->hashval > be32_to_cpu(
+						entries[leafhdr.count - 1].hashval)) {
 					trace_xfs_attr_list_wrong_blk(context);
 					xfs_trans_brelse(NULL, bp);
 					bp = NULL;
-				} else if (cursor->hashval <=
-					     be32_to_cpu(leaf->entries[0].hashval)) {
+				} else if (cursor->hashval <= be32_to_cpu(
+						entries[0].hashval)) {
 					trace_xfs_attr_list_wrong_blk(context);
 					xfs_trans_brelse(NULL, bp);
 					bp = NULL;
@@ -1851,27 +1859,31 @@ xfs_attr_node_list(xfs_attr_list_context_t *context)
 	if (bp == NULL) {
 		cursor->blkno = 0;
 		for (;;) {
+			__uint16_t magic;
+
 			error = xfs_da3_node_read(NULL, context->dp,
 						      cursor->blkno, -1, &bp,
 						      XFS_ATTR_FORK);
 			if (error)
 				return(error);
 			node = bp->b_addr;
-			if (node->hdr.info.magic ==
-			    cpu_to_be16(XFS_ATTR_LEAF_MAGIC))
+			magic = be16_to_cpu(node->hdr.info.magic);
+			if (magic == XFS_ATTR_LEAF_MAGIC ||
+			    magic == XFS_ATTR3_LEAF_MAGIC)
 				break;
-			if (unlikely(node->hdr.info.magic !=
-				     cpu_to_be16(XFS_DA_NODE_MAGIC))) {
+			if (magic != XFS_DA_NODE_MAGIC &&
+			    magic != XFS_DA3_NODE_MAGIC) {
 				XFS_CORRUPTION_ERROR("xfs_attr_node_list(3)",
 						     XFS_ERRLEVEL_LOW,
 						     context->dp->i_mount,
 						     node);
 				xfs_trans_brelse(NULL, bp);
-				return(XFS_ERROR(EFSCORRUPTED));
+				return XFS_ERROR(EFSCORRUPTED);
 			}
+
+			xfs_da3_node_hdr_from_disk(&nodehdr, node);
 			btree = xfs_da3_node_tree_p(node);
-			for (i = 0; i < be16_to_cpu(node->hdr.count);
-								btree++, i++) {
+			for (i = 0; i < nodehdr.count; btree++, i++) {
 				if (cursor->hashval
 						<= be32_to_cpu(btree->hashval)) {
 					cursor->blkno = be32_to_cpu(btree->before);
@@ -1880,9 +1892,9 @@ xfs_attr_node_list(xfs_attr_list_context_t *context)
 					break;
 				}
 			}
-			if (i == be16_to_cpu(node->hdr.count)) {
+			if (i == nodehdr.count) {
 				xfs_trans_brelse(NULL, bp);
-				return(0);
+				return 0;
 			}
 			xfs_trans_brelse(NULL, bp);
 		}
@@ -1896,22 +1908,23 @@ xfs_attr_node_list(xfs_attr_list_context_t *context)
 	 */
 	for (;;) {
 		leaf = bp->b_addr;
-		error = xfs_attr_leaf_list_int(bp, context);
+		error = xfs_attr3_leaf_list_int(bp, context);
 		if (error) {
 			xfs_trans_brelse(NULL, bp);
 			return error;
 		}
-		if (context->seen_enough || leaf->hdr.info.forw == 0)
+		xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf);
+		if (context->seen_enough || leafhdr.forw == 0)
 			break;
-		cursor->blkno = be32_to_cpu(leaf->hdr.info.forw);
+		cursor->blkno = leafhdr.forw;
 		xfs_trans_brelse(NULL, bp);
-		error = xfs_attr_leaf_read(NULL, context->dp, cursor->blkno, -1,
+		error = xfs_attr3_leaf_read(NULL, context->dp, cursor->blkno, -1,
 					   &bp);
 		if (error)
 			return error;
 	}
 	xfs_trans_brelse(NULL, bp);
-	return(0);
+	return 0;
 }