/*
 * (C) 2001 Clemson University and The University of Chicago
 *
 * See COPYING in top-level directory.
 */

#ifndef _ORANGEFS_DEV_PROTO_H
#define _ORANGEFS_DEV_PROTO_H

/*
 * types and constants shared between user space and kernel space for
 * device interaction using a common protocol
 */

/*
 * valid orangefs kernel operation types
 */
#define ORANGEFS_VFS_OP_INVALID           0xFF000000
#define ORANGEFS_VFS_OP_FILE_IO        0xFF000001
#define ORANGEFS_VFS_OP_LOOKUP         0xFF000002
#define ORANGEFS_VFS_OP_CREATE         0xFF000003
#define ORANGEFS_VFS_OP_GETATTR        0xFF000004
#define ORANGEFS_VFS_OP_REMOVE         0xFF000005
#define ORANGEFS_VFS_OP_MKDIR          0xFF000006
#define ORANGEFS_VFS_OP_READDIR        0xFF000007
#define ORANGEFS_VFS_OP_SETATTR        0xFF000008
#define ORANGEFS_VFS_OP_SYMLINK        0xFF000009
#define ORANGEFS_VFS_OP_RENAME         0xFF00000A
#define ORANGEFS_VFS_OP_STATFS         0xFF00000B
#define ORANGEFS_VFS_OP_TRUNCATE       0xFF00000C
#define ORANGEFS_VFS_OP_MMAP_RA_FLUSH  0xFF00000D
#define ORANGEFS_VFS_OP_FS_MOUNT       0xFF00000E
#define ORANGEFS_VFS_OP_FS_UMOUNT      0xFF00000F
#define ORANGEFS_VFS_OP_GETXATTR       0xFF000010
#define ORANGEFS_VFS_OP_SETXATTR          0xFF000011
#define ORANGEFS_VFS_OP_LISTXATTR         0xFF000012
#define ORANGEFS_VFS_OP_REMOVEXATTR       0xFF000013
#define ORANGEFS_VFS_OP_PARAM          0xFF000014
#define ORANGEFS_VFS_OP_PERF_COUNT     0xFF000015
#define ORANGEFS_VFS_OP_CANCEL            0xFF00EE00
#define ORANGEFS_VFS_OP_FSYNC          0xFF00EE01
#define ORANGEFS_VFS_OP_FSKEY             0xFF00EE02
#define ORANGEFS_VFS_OP_READDIRPLUS       0xFF00EE03

/*
 * Misc constants. Please retain them as multiples of 8!
 * Otherwise 32-64 bit interactions will be messed up :)
 */
#define ORANGEFS_NAME_LEN		0x00000100
#define ORANGEFS_MAX_DEBUG_STRING_LEN	0x00000400
#define ORANGEFS_MAX_DEBUG_ARRAY_LEN	0x00000800

/*
 * MAX_DIRENT_COUNT cannot be larger than ORANGEFS_REQ_LIMIT_LISTATTR.
 * The value of ORANGEFS_REQ_LIMIT_LISTATTR has been changed from 113 to 60
 * to accomodate an attribute object with mirrored handles.
 * MAX_DIRENT_COUNT is replaced by MAX_DIRENT_COUNT_READDIR and
 * MAX_DIRENT_COUNT_READDIRPLUS, since readdir doesn't trigger a listattr
 * but readdirplus might.
*/
#define MAX_DIRENT_COUNT_READDIR       0x00000060
#define MAX_DIRENT_COUNT_READDIRPLUS   0x0000003C

#include "upcall.h"
#include "downcall.h"

/*
 * These macros differ from proto macros in that they don't do any
 * byte-swappings and are used to ensure that kernel-clientcore interactions
 * don't cause any unaligned accesses etc on 64 bit machines
 */
#ifndef roundup4
#define roundup4(x) (((x)+3) & ~3)
#endif

#ifndef roundup8
#define roundup8(x) (((x)+7) & ~7)
#endif

struct read_write_x {
	__s64 off;
	__s64 len;
};

#endif