From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Mon, 14 Jul 2014 17:21:30 +0200
Subject: [PATCH] xfs: Convert inode numbers to cpu endianity immediately after
 reading

Currently XFS driver converted inode numbers to native endianity only
when using them to compute inode position. Although this works, it is
somewhat confusing. So convert inode numbers when reading them from disk
structures as every other field.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 grub-core/fs/xfs.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index 4bd52d1e081..0d704e9a4d4 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -180,14 +180,14 @@ static inline grub_uint64_t
 GRUB_XFS_INO_INOINAG (struct grub_xfs_data *data,
 		      grub_uint64_t ino)
 {
-  return (grub_be_to_cpu64 (ino) & ((1LL << GRUB_XFS_INO_AGBITS (data)) - 1));
+  return (ino & ((1LL << GRUB_XFS_INO_AGBITS (data)) - 1));
 }
 
 static inline grub_uint64_t
 GRUB_XFS_INO_AG (struct grub_xfs_data *data,
 		 grub_uint64_t ino)
 {
-  return (grub_be_to_cpu64 (ino) >> GRUB_XFS_INO_AGBITS (data));
+  return (ino >> GRUB_XFS_INO_AGBITS (data));
 }
 
 static inline grub_disk_addr_t
@@ -506,13 +506,12 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
 	if (smallino)
 	  {
 	    parent = grub_be_to_cpu32 (diro->inode.data.dir.dirhead.parent.i4);
-	    parent = grub_cpu_to_be64 (parent);
 	    /* The header is a bit smaller than usual.  */
 	    de = (struct grub_xfs_dir_entry *) ((char *) de - 4);
 	  }
 	else
 	  {
-	    parent = diro->inode.data.dir.dirhead.parent.i8;
+	    parent = grub_be_to_cpu64(diro->inode.data.dir.dirhead.parent.i8);
 	  }
 
 	/* Synthesize the direntries for `.' and `..'.  */
@@ -545,7 +544,6 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
 		| (((grub_uint64_t) inopos[5]) << 16)
 		| (((grub_uint64_t) inopos[6]) << 8)
 		| (((grub_uint64_t) inopos[7]) << 0);
-	    ino = grub_cpu_to_be64 (ino);
 
 	    c = de->name[de->len];
 	    de->name[de->len] = '\0';
@@ -627,7 +625,8 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
 		   is not used by GRUB.  So it can be overwritten.  */
 		filename[direntry->len] = '\0';
 
-		if (iterate_dir_call_hook (direntry->inode, filename, &ctx))
+		if (iterate_dir_call_hook (grub_be_to_cpu64(direntry->inode), 
+					   filename, &ctx))
 		  {
 		    grub_free (dirblock);
 		    return 1;
@@ -689,7 +688,7 @@ grub_xfs_mount (grub_disk_t disk)
     goto fail;
 
   data->diropen.data = data;
-  data->diropen.ino = data->sblock.rootino;
+  data->diropen.ino = grub_be_to_cpu64(data->sblock.rootino);
   data->diropen.inode_read = 1;
   data->bsize = grub_be_to_cpu32 (data->sblock.bsize);
   data->agsize = grub_be_to_cpu32 (data->sblock.agsize);