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Diffstat (limited to 'fs/xfs/linux-2.6/xfs_export.h')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_export.h | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/fs/xfs/linux-2.6/xfs_export.h b/fs/xfs/linux-2.6/xfs_export.h deleted file mode 100644 index 60b2abac1c1..00000000000 --- a/fs/xfs/linux-2.6/xfs_export.h +++ /dev/null @@ -1,122 +0,0 @@ -/* - * Copyright (c) 2005 Silicon Graphics, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * Further, this software is distributed without any warranty that it is - * free of the rightful claim of any third person regarding infringement - * or the like. Any license provided herein, whether implied or - * otherwise, applies only to this software file. Patent licenses, if - * any, provided herein do not apply to combinations of this program with - * other software, or any other product whatsoever. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, - * Mountain View, CA 94043, or: - * - * http://www.sgi.com - * - * For further information regarding this notice, see: - * - * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ - */ -#ifndef __XFS_EXPORT_H__ -#define __XFS_EXPORT_H__ - -/* - * Common defines for code related to exporting XFS filesystems over NFS. - * - * The NFS fileid goes out on the wire as an array of - * 32bit unsigned ints in host order. There are 5 possible - * formats. - * - * (1) fileid_type=0x00 - * (no fileid data; handled by the generic code) - * - * (2) fileid_type=0x01 - * inode-num - * generation - * - * (3) fileid_type=0x02 - * inode-num - * generation - * parent-inode-num - * parent-generation - * - * (4) fileid_type=0x81 - * inode-num-lo32 - * inode-num-hi32 - * generation - * - * (5) fileid_type=0x82 - * inode-num-lo32 - * inode-num-hi32 - * generation - * parent-inode-num-lo32 - * parent-inode-num-hi32 - * parent-generation - * - * Note, the NFS filehandle also includes an fsid portion which - * may have an inode number in it. That number is hardcoded to - * 32bits and there is no way for XFS to intercept it. In - * practice this means when exporting an XFS filesytem with 64bit - * inodes you should either export the mountpoint (rather than - * a subdirectory) or use the "fsid" export option. - */ - -/* This flag goes on the wire. Don't play with it. */ -#define XFS_FILEID_TYPE_64FLAG 0x80 /* NFS fileid has 64bit inodes */ - -/* Calculate the length in u32 units of the fileid data */ -static inline int -xfs_fileid_length(int hasparent, int is64) -{ - return hasparent ? (is64 ? 6 : 4) : (is64 ? 3 : 2); -} - -/* - * Decode encoded inode information (either for the inode itself - * or the parent) into an xfs_fid2_t structure. Advances and - * returns the new data pointer - */ -static inline __u32 * -xfs_fileid_decode_fid2(__u32 *p, xfs_fid2_t *fid, int is64) -{ - fid->fid_len = sizeof(xfs_fid2_t) - sizeof(fid->fid_len); - fid->fid_pad = 0; - fid->fid_ino = *p++; -#if XFS_BIG_INUMS - if (is64) - fid->fid_ino |= (((__u64)(*p++)) << 32); -#endif - fid->fid_gen = *p++; - return p; -} - -/* - * Encode inode information (either for the inode itself or the - * parent) into a fileid buffer. Advances and returns the new - * data pointer. - */ -static inline __u32 * -xfs_fileid_encode_inode(__u32 *p, struct inode *inode, int is64) -{ - *p++ = (__u32)inode->i_ino; -#if XFS_BIG_INUMS - if (is64) - *p++ = (__u32)(inode->i_ino >> 32); -#endif - *p++ = inode->i_generation; - return p; -} - -#endif /* __XFS_EXPORT_H__ */ |