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| author | Krzysztof Błaszkowski <kb@sysmikro.com.pl> | 2016-05-31 08:45:13 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2016-06-01 09:01:28 +0200 |
| commit | 0d83f7fc83f77d1cc8395b9e851325d8cc1892e3 (patch) | |
| tree | 9cfc6aef0a098884097fd37bb413639e8e76f461 /fs/freevxfs/vxfs_inode.c | |
| parent | 6b15d6650c5301ce023d8df0cc3a60b1a76d377e (diff) | |
| download | lwn-0d83f7fc83f77d1cc8395b9e851325d8cc1892e3.tar.gz lwn-0d83f7fc83f77d1cc8395b9e851325d8cc1892e3.zip | |
freevxfs: handle big endian HP-UX file systems
To support VxFS filesystems from HP-UX on x86 systems we need to
implement byte swapping, and to keep support for Unixware filesystems
it needs to be the complicated dual-endian kind ala sysvfs.
To do this properly we have to split the on disk and in-core inode
so that we can keep the in-core one in native endianness. All other
structures are byteswapped on demand.
Signed-off-by: Krzysztof Błaszkowski <kb@sysmikro.com.pl>
[hch: make spare happy]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/freevxfs/vxfs_inode.c')
| -rw-r--r-- | fs/freevxfs/vxfs_inode.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c index 3e2ccade61ed..15de300a3ac6 100644 --- a/fs/freevxfs/vxfs_inode.c +++ b/fs/freevxfs/vxfs_inode.c @@ -68,6 +68,33 @@ vxfs_dumpi(struct vxfs_inode_info *vip, ino_t ino) } #endif +static inline void dip2vip_cpy(struct vxfs_sb_info *sbi, + struct vxfs_inode_info *vip, struct vxfs_dinode *dip) +{ + vip->vii_mode = fs32_to_cpu(sbi, dip->vdi_mode); + vip->vii_nlink = fs32_to_cpu(sbi, dip->vdi_nlink); + vip->vii_uid = fs32_to_cpu(sbi, dip->vdi_uid); + vip->vii_gid = fs32_to_cpu(sbi, dip->vdi_gid); + vip->vii_size = fs64_to_cpu(sbi, dip->vdi_size); + vip->vii_atime = fs32_to_cpu(sbi, dip->vdi_atime); + vip->vii_autime = fs32_to_cpu(sbi, dip->vdi_autime); + vip->vii_mtime = fs32_to_cpu(sbi, dip->vdi_mtime); + vip->vii_mutime = fs32_to_cpu(sbi, dip->vdi_mutime); + vip->vii_ctime = fs32_to_cpu(sbi, dip->vdi_ctime); + vip->vii_cutime = fs32_to_cpu(sbi, dip->vdi_cutime); + vip->vii_orgtype = dip->vdi_orgtype; + + vip->vii_blocks = fs32_to_cpu(sbi, dip->vdi_blocks); + vip->vii_gen = fs32_to_cpu(sbi, dip->vdi_gen); + + if (VXFS_ISDIR(vip)) + vip->vii_dotdot = fs32_to_cpu(sbi, dip->vdi_dotdot); + else if (!VXFS_ISREG(vip) && !VXFS_ISLNK(vip)) + vip->vii_rdev = fs32_to_cpu(sbi, dip->vdi_rdev); + + /* don't endian swap the fields that differ by orgtype */ + memcpy(&vip->vii_org, &dip->vdi_org, sizeof(vip->vii_org)); +} /** * vxfs_blkiget - find inode based on extent # @@ -102,7 +129,7 @@ vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino) if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL))) goto fail; dip = (struct vxfs_dinode *)(bp->b_data + offset); - memcpy(vip, dip, sizeof(*vip)); + dip2vip_cpy(VXFS_SBI(sbp), vip, dip); #ifdef DIAGNOSTIC vxfs_dumpi(vip, ino); #endif @@ -144,7 +171,7 @@ __vxfs_iget(ino_t ino, struct inode *ilistp) if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL))) goto fail; dip = (struct vxfs_dinode *)(kaddr + offset); - memcpy(vip, dip, sizeof(*vip)); + dip2vip_cpy(VXFS_SBI(ilistp->i_sb), vip, dip); #ifdef DIAGNOSTIC vxfs_dumpi(vip, ino); #endif |