| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame^] | 1 | /* $NetBSD: uio.h,v 1.34 2006/03/01 12:38:32 yamt Exp $ */
|
| 2 |
|
| 3 | /*
|
| 4 | * Copyright (c) 1982, 1986, 1993, 1994
|
| 5 | * The Regents of the University of California. All rights reserved.
|
| 6 | *
|
| 7 | * Redistribution and use in source and binary forms, with or without
|
| 8 | * modification, are permitted provided that the following conditions
|
| 9 | * are met:
|
| 10 | * 1. Redistributions of source code must retain the above copyright
|
| 11 | * notice, this list of conditions and the following disclaimer.
|
| 12 | * 2. Redistributions in binary form must reproduce the above copyright
|
| 13 | * notice, this list of conditions and the following disclaimer in the
|
| 14 | * documentation and/or other materials provided with the distribution.
|
| 15 | * 3. Neither the name of the University nor the names of its contributors
|
| 16 | * may be used to endorse or promote products derived from this software
|
| 17 | * without specific prior written permission.
|
| 18 | *
|
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
| 29 | * SUCH DAMAGE.
|
| 30 | *
|
| 31 | * @(#)uio.h 8.5 (Berkeley) 2/22/94
|
| 32 | */
|
| 33 |
|
| 34 | #ifndef _SYS_UIO_H_
|
| 35 | #define _SYS_UIO_H_
|
| 36 |
|
| 37 | #ifdef _KERNEL
|
| 38 | #ifndef __UIO_EXPOSE
|
| 39 | #define __UIO_EXPOSE
|
| 40 | #endif
|
| 41 | #endif
|
| 42 |
|
| 43 | #include <machine/ansi.h>
|
| 44 | #include <sys/featuretest.h>
|
| 45 |
|
| 46 | #ifdef _EFI_SIZE_T_
|
| 47 | typedef _EFI_SIZE_T_ size_t;
|
| 48 | #undef _EFI_SIZE_T_
|
| 49 | #undef _BSD_SIZE_T_
|
| 50 | #endif
|
| 51 |
|
| 52 | #ifdef _BSD_SSIZE_T_
|
| 53 | typedef _BSD_SSIZE_T_ ssize_t;
|
| 54 | #undef _BSD_SSIZE_T_
|
| 55 | #endif
|
| 56 |
|
| 57 | struct iovec {
|
| 58 | void *iov_base; /* Base address. */
|
| 59 | size_t iov_len; /* Length. */
|
| 60 | };
|
| 61 |
|
| 62 | #if defined(_NETBSD_SOURCE)
|
| 63 | #include <sys/ansi.h>
|
| 64 |
|
| 65 | #ifndef off_t
|
| 66 | typedef __off_t off_t; /* file offset */
|
| 67 | #define off_t __off_t
|
| 68 | #endif
|
| 69 |
|
| 70 | enum uio_rw { UIO_READ, UIO_WRITE };
|
| 71 |
|
| 72 | /* Segment flag values. */
|
| 73 | enum uio_seg {
|
| 74 | UIO_USERSPACE, /* from user data space */
|
| 75 | UIO_SYSSPACE /* from system space */
|
| 76 | };
|
| 77 |
|
| 78 | #ifdef __UIO_EXPOSE
|
| 79 |
|
| 80 | struct uio {
|
| 81 | struct iovec *uio_iov; /* pointer to array of iovecs */
|
| 82 | int uio_iovcnt; /* number of iovecs in array */
|
| 83 | off_t uio_offset; /* offset into file this uio corresponds to */
|
| 84 | size_t uio_resid; /* residual i/o count */
|
| 85 | enum uio_rw uio_rw; /* see above */
|
| 86 | struct vmspace *uio_vmspace;
|
| 87 | };
|
| 88 | #define UIO_SETUP_SYSSPACE(uio) uio_setup_sysspace(uio)
|
| 89 |
|
| 90 | #endif /* __UIO_EXPOSE */
|
| 91 |
|
| 92 | /*
|
| 93 | * Limits
|
| 94 | */
|
| 95 | /* Deprecated: use IOV_MAX from <limits.h> instead. */
|
| 96 | #define UIO_MAXIOV 1024 /* max 1K of iov's */
|
| 97 | #endif /* _NETBSD_SOURCE */
|
| 98 |
|
| 99 | #ifdef _KERNEL
|
| 100 | #include <sys/mallocvar.h>
|
| 101 |
|
| 102 | MALLOC_DECLARE(M_IOV);
|
| 103 |
|
| 104 | #define UIO_SMALLIOV 8 /* 8 on stack, else malloc */
|
| 105 |
|
| 106 | void uio_setup_sysspace(struct uio *);
|
| 107 | #endif
|
| 108 |
|
| 109 | #ifndef _KERNEL
|
| 110 | #include <sys/EfiCdefs.h>
|
| 111 |
|
| 112 | __BEGIN_DECLS
|
| 113 | #if defined(_NETBSD_SOURCE)
|
| 114 | ssize_t preadv(int, const struct iovec *, int, off_t);
|
| 115 | ssize_t pwritev(int, const struct iovec *, int, off_t);
|
| 116 | #endif /* _NETBSD_SOURCE */
|
| 117 | ssize_t readv(int, const struct iovec *, int);
|
| 118 | ssize_t writev(int, const struct iovec *, int);
|
| 119 | __END_DECLS
|
| 120 | #else
|
| 121 | int ureadc(int, struct uio *);
|
| 122 | #endif /* !_KERNEL */
|
| 123 |
|
| 124 | #endif /* !_SYS_UIO_H_ */
|