diff options
Diffstat (limited to 'sys/sys/uio.h')
| -rw-r--r-- | sys/sys/uio.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/sys/sys/uio.h b/sys/sys/uio.h new file mode 100644 index 0000000..fdc4690 --- /dev/null +++ b/sys/sys/uio.h @@ -0,0 +1,108 @@ +/* $OpenBSD: uio.h,v 1.19 2018/08/20 16:00:22 mpi Exp $ */ +/* $NetBSD: uio.h,v 1.12 1996/02/09 18:25:45 christos Exp $ */ + +/* + * Copyright (c) 1982, 1986, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)uio.h 8.5 (Berkeley) 2/22/94 + */ + +#ifndef _SYS_UIO_H_ +#define _SYS_UIO_H_ + +#include <sys/cdefs.h> +#include <sys/_types.h> + +#ifndef _SIZE_T_DEFINED_ +#define _SIZE_T_DEFINED_ +typedef __size_t size_t; +#endif + +#ifndef _SSIZE_T_DEFINED_ +#define _SSIZE_T_DEFINED_ +typedef __ssize_t ssize_t; +#endif + +struct iovec { + void *iov_base; /* Base address. */ + size_t iov_len; /* Length. */ +}; + +#if __BSD_VISIBLE /* needed by kdump */ +enum uio_rw { UIO_READ, UIO_WRITE }; + +/* Segment flag values. */ +enum uio_seg { + UIO_USERSPACE, /* from user data space */ + UIO_SYSSPACE /* from system space */ +}; +#endif /* __BSD_VISIBLE */ + +#ifdef _KERNEL +struct uio { + struct iovec *uio_iov; /* pointer to array of iovecs */ + int uio_iovcnt; /* number of iovecs in array */ + off_t uio_offset; /* offset into file this uio corresponds to */ + size_t uio_resid; /* residual i/o count */ + enum uio_seg uio_segflg; /* see above */ + enum uio_rw uio_rw; /* see above */ + struct proc *uio_procp;/* associated thread or NULL */ +}; + +/* + * Limits + */ +#define UIO_SMALLIOV 8 /* 8 on stack, else malloc */ +#endif /* _KERNEL */ + +#if __BSD_VISIBLE +#define UIO_MAXIOV 1024 /* Deprecated, use IOV_MAX instead */ +#endif + +#ifndef _KERNEL +__BEGIN_DECLS +#if __BSD_VISIBLE +ssize_t preadv(int, const struct iovec *, int, __off_t); +ssize_t pwritev(int, const struct iovec *, int, __off_t); +#endif /* __BSD_VISIBLE */ +ssize_t readv(int, const struct iovec *, int); +ssize_t writev(int, const struct iovec *, int); +__END_DECLS +#else +int ureadc(int c, struct uio *); + +struct file; +int iovec_copyin(const struct iovec *, struct iovec **, struct iovec *, + unsigned int, size_t *); +void iovec_free(struct iovec *, unsigned int ); +int dofilereadv(struct proc *, int, struct uio *, int, register_t *); +int dofilewritev(struct proc *, int, struct uio *, int, register_t *); + +#endif /* !_KERNEL */ + +#endif /* !_SYS_UIO_H_ */ |