File grub2-xfs-Convert-inode-numbers-to-cpu-endianit... of Package grub2

Overview Repositories Revisions Requests Users Attributes Meta

File grub2-xfs-Convert-inode-numbers-to-cpu-endianity-immediate.patch of Package grub2 (Revision ccdd622f214a371f009554e9c2aed2b6)

Currently displaying revision ccdd622f214a371f009554e9c2aed2b6 , Show latest

From 57ae4073cc28fa74014a62aca397a40ce1f73763 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Thu, 12 Jun 2014 11:01:11 +0200
Subject: [PATCH 3/4] 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 ef3bc787e968..7e247a32df5c 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
@@ -511,13 +511,12 @@ 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 `..'.  */
@@ -550,7 +549,6 @@ 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';
@@ -632,7 +630,8 @@ 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;
@@ -694,7 +693,7 @@ 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);
-- 
1.8.1.4

Places

File grub2-xfs-Convert-inode-numbers-to-cpu-endianity-immediate.patch of Package grub2 (Revision ccdd622f214a371f009554e9c2aed2b6)

Places