1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/genericopenlibs/openenvcore/include/sys/uio.h Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,100 @@
1.4 +/*-
1.5 + * Copyright (c) 1982, 1986, 1993, 1994
1.6 + * The Regents of the University of California. All rights reserved.
1.7 + *
1.8 + * Redistribution and use in source and binary forms, with or without
1.9 + * modification, are permitted provided that the following conditions
1.10 + * are met:
1.11 + * 1. Redistributions of source code must retain the above copyright
1.12 + * notice, this list of conditions and the following disclaimer.
1.13 + * 2. Redistributions in binary form must reproduce the above copyright
1.14 + * notice, this list of conditions and the following disclaimer in the
1.15 + * documentation and/or other materials provided with the distribution.
1.16 + * 4. Neither the name of the University nor the names of its contributors
1.17 + * may be used to endorse or promote products derived from this software
1.18 + * without specific prior written permission.
1.19 + *
1.20 + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
1.21 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.22 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.23 + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
1.24 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.25 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.26 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.27 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.28 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.29 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.30 + * SUCH DAMAGE.
1.31 + * © * Portions Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
1.32 + * @(#)uio.h 8.5 (Berkeley) 2/22/94
1.33 + * $FreeBSD: src/sys/sys/uio.h,v 1.39 2005/07/07 18:17:55 jhb Exp $
1.34 + */
1.35 +
1.36 +#ifndef _SYS_UIO_H_
1.37 +#define _SYS_UIO_H_
1.38 +
1.39 +#include <sys/cdefs.h>
1.40 +#include <sys/_types.h>
1.41 +#include <sys/_iovec.h>
1.42 +
1.43 +#ifndef _SSIZE_T_DECLARED
1.44 +typedef __ssize_t ssize_t;
1.45 +#define _SSIZE_T_DECLARED
1.46 +#endif
1.47 +
1.48 +#ifndef _OFF_T_DECLARED
1.49 +typedef __off_t off_t;
1.50 +#define _OFF_T_DECLARED
1.51 +#endif
1.52 +
1.53 +#if __BSD_VISIBLE
1.54 +enum uio_rw { UIO_READ, UIO_WRITE };
1.55 +
1.56 +/* Segment flag values. */
1.57 +enum uio_seg {
1.58 + UIO_USERSPACE, /* from user data space */
1.59 + UIO_SYSSPACE, /* from system space */
1.60 + UIO_NOCOPY /* don't copy, already in object */
1.61 +};
1.62 +#endif
1.63 +
1.64 +#ifdef _KERNEL
1.65 +
1.66 +struct uio {
1.67 + struct iovec *uio_iov;
1.68 + int uio_iovcnt;
1.69 + off_t uio_offset;
1.70 + int uio_resid;
1.71 + enum uio_seg uio_segflg;
1.72 + enum uio_rw uio_rw;
1.73 + struct thread *uio_td;
1.74 +};
1.75 +
1.76 +/*
1.77 + * Limits
1.78 + *
1.79 + * N.B.: UIO_MAXIOV must be no less than IOV_MAX from <sys/syslimits.h>
1.80 + * which in turn must be no less than _XOPEN_IOV_MAX from <limits.h>. If
1.81 + * we ever make this tunable (probably pointless), then IOV_MAX should be
1.82 + * removed from <sys/syslimits.h> and applications would be expected to use
1.83 + * sysconf(3) to find out the correct value, or else assume the worst
1.84 + * (_XOPEN_IOV_MAX). Perhaps UIO_MAXIOV should be simply defined as
1.85 + * IOV_MAX.
1.86 + */
1.87 +#define UIO_MAXIOV 1024 /* max 1K of iov's */
1.88 +
1.89 +struct vm_object;
1.90 +struct vm_page;
1.91 +
1.92 +#else /* !_KERNEL */
1.93 +
1.94 +__BEGIN_DECLS
1.95 +IMPORT_C
1.96 +ssize_t readv(int, const struct iovec *, int);
1.97 +IMPORT_C
1.98 +ssize_t writev(int, const struct iovec *, int);
1.99 +__END_DECLS
1.100 +
1.101 +#endif /* _KERNEL */
1.102 +
1.103 +#endif /* !_SYS_UIO_H_ */