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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jan Kara <jack@suse.cz>
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Date: Mon, 14 Jul 2014 17:21:30 +0200
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Subject: [PATCH] xfs: Convert inode numbers to cpu endianity immediately after
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reading
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Currently XFS driver converted inode numbers to native endianity only
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when using them to compute inode position. Although this works, it is
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somewhat confusing. So convert inode numbers when reading them from disk
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structures as every other field.
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Signed-off-by: Jan Kara <jack@suse.cz>
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---
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grub-core/fs/xfs.c | 13 ++++++-------
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1 file changed, 6 insertions(+), 7 deletions(-)
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diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
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index 4bd52d1e081..0d704e9a4d4 100644
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--- a/grub-core/fs/xfs.c
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+++ b/grub-core/fs/xfs.c
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@@ -180,14 +180,14 @@ static inline grub_uint64_t
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GRUB_XFS_INO_INOINAG (struct grub_xfs_data *data,
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grub_uint64_t ino)
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{
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- return (grub_be_to_cpu64 (ino) & ((1LL << GRUB_XFS_INO_AGBITS (data)) - 1));
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+ return (ino & ((1LL << GRUB_XFS_INO_AGBITS (data)) - 1));
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}
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static inline grub_uint64_t
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GRUB_XFS_INO_AG (struct grub_xfs_data *data,
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grub_uint64_t ino)
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{
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- return (grub_be_to_cpu64 (ino) >> GRUB_XFS_INO_AGBITS (data));
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+ return (ino >> GRUB_XFS_INO_AGBITS (data));
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}
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static inline grub_disk_addr_t
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@@ -506,13 +506,12 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
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if (smallino)
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{
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parent = grub_be_to_cpu32 (diro->inode.data.dir.dirhead.parent.i4);
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- parent = grub_cpu_to_be64 (parent);
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/* The header is a bit smaller than usual. */
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de = (struct grub_xfs_dir_entry *) ((char *) de - 4);
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}
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else
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{
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- parent = diro->inode.data.dir.dirhead.parent.i8;
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+ parent = grub_be_to_cpu64(diro->inode.data.dir.dirhead.parent.i8);
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}
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/* Synthesize the direntries for `.' and `..'. */
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@@ -545,7 +544,6 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
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| (((grub_uint64_t) inopos[5]) << 16)
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| (((grub_uint64_t) inopos[6]) << 8)
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| (((grub_uint64_t) inopos[7]) << 0);
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- ino = grub_cpu_to_be64 (ino);
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c = de->name[de->len];
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de->name[de->len] = '\0';
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@@ -627,7 +625,8 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
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is not used by GRUB. So it can be overwritten. */
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filename[direntry->len] = '\0';
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- if (iterate_dir_call_hook (direntry->inode, filename, &ctx))
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+ if (iterate_dir_call_hook (grub_be_to_cpu64(direntry->inode),
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+ filename, &ctx))
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{
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grub_free (dirblock);
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return 1;
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@@ -689,7 +688,7 @@ grub_xfs_mount (grub_disk_t disk)
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goto fail;
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data->diropen.data = data;
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- data->diropen.ino = data->sblock.rootino;
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+ data->diropen.ino = grub_be_to_cpu64(data->sblock.rootino);
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data->diropen.inode_read = 1;
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data->bsize = grub_be_to_cpu32 (data->sblock.bsize);
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data->agsize = grub_be_to_cpu32 (data->sblock.agsize);
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