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/*
* Copyright (c) 2000 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_SUPPORT_MOVE_H__
#define __XFS_SUPPORT_MOVE_H__
#include <linux/uio.h>
#include <asm/uaccess.h>
#define bzero(p,s) memset((p), 0, (s))
#define bcopy(s,d,n) memcpy((d),(s),(n))
#define bcmp(s1,s2,l) memcmp(s1,s2,l)
#define ovbcopy(from,to,count) memmove(to,from,count)
typedef struct iovec iovec_t;
typedef struct uio {
iovec_t *uio_iov; /* pointer to array of iovecs */
int uio_iovcnt; /* number of iovecs */
int uio_fmode; /* file mode flags */
xfs_off_t uio_offset; /* file offset */
short uio_segflg; /* address space (kernel or user) */
ssize_t uio_resid; /* residual count */
struct file * uio_fp; /* file associated with io */
} uio_t;
/*
* I/O direction.
*/
typedef enum uio_rw { UIO_READ, UIO_WRITE } uio_rw_t;
/*
* Segment flag values.
*/
typedef enum uio_seg {
UIO_NOSPACE = -1, /* no data movement (used for pagein) */
UIO_USERSPACE, /* uio_iov describes user space */
UIO_SYSSPACE, /* uio_iov describes system space */
UIO_USERISPACE /* uio_iov describes instruction space */
} uio_seg_t;
extern int uiomove (void *, size_t, uio_rw_t, uio_t *);
/*
* map these directly... trying to use a #define causes
* many strange side affects
*/
/*
* copyin/copyout on irix return 0 on success, -1 on failure
*/
static __inline__ int
copyout( void* from, void* to, int size )
{
return copy_to_user(to, from, size ) ? -1 : 0;
}
static __inline__ int
copyin( void* from, void* to, int size )
{
return copy_from_user(to, from, size ) ? -1 : 0;
}
#endif /* __XFS_SUPPORT_MOVE_H__ */
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