From 82f382747d87ce89176b1fbdd5c3e0ae3eb7bd21 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Mon, 14 Jul 2014 17:21:30 +0200 Subject: 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 Origin: upstream, http://git.savannah.gnu.org/cgit/grub.git/commit/?id=a139188eb559ee23f51540948ec84ef5948fb2d1 Last-Update: 2015-11-05 Patch-Name: xfs-simplify-inode-endian-conversion.patch --- 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 4bd52d1..0d704e9 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);