cregit-Linux how code gets into the kernel

Release 4.11 fs/xfs/xfs_export.h

Directory: fs/xfs
/*
 * 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 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#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 filesystem with 64bit
 * inodes you should either export the mountpoint (rather than
 * a subdirectory) or use the "fsid" export option.
 */


struct xfs_fid64 {
	
u64 ino;
	
u32 gen;
	
u64 parent_ino;
	
u32 parent_gen;
} __attribute__((packed));

/* This flag goes on the wire.  Don't play with it. */

#define XFS_FILEID_TYPE_64FLAG	0x80	
/* NFS fileid has 64bit inodes */

#endif	/* __XFS_EXPORT_H__ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Christoph Hellwig2357.50%125.00%
Greg Banks1537.50%125.00%
Nathan Scott25.00%250.00%
Total40100.00%4100.00%
Directory: fs/xfs
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