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Annotation of Net2/sys/uio.h, revision 1.1.1.2

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  *
1.1.1.2 ! root       33:  *     from: @(#)uio.h 7.8 (Berkeley) 4/15/91
        !            34:  *     uio.h,v 1.4 1993/06/27 05:59:11 andrew Exp
1.1       root       35:  */
                     36: 
1.1.1.2 ! root       37: #ifndef _SYS_UIO_H_
        !            38: #define _SYS_UIO_H_
1.1       root       39: 
                     40: struct iovec {
                     41:        caddr_t iov_base;
                     42:        int     iov_len;
                     43: };
                     44: 
                     45: enum   uio_rw { UIO_READ, UIO_WRITE };
                     46: 
                     47: /*
                     48:  * Segment flag values.
                     49:  */
                     50: enum   uio_seg {
                     51:        UIO_USERSPACE,          /* from user data space */
                     52:        UIO_SYSSPACE,           /* from system space */
                     53:        UIO_USERISPACE          /* from user I space */
                     54: };
                     55: 
                     56: struct uio {
                     57:        struct  iovec *uio_iov;
                     58:        int     uio_iovcnt;
                     59:        off_t   uio_offset;
                     60:        int     uio_resid;
                     61:        enum    uio_seg uio_segflg;
                     62:        enum    uio_rw uio_rw;
                     63:        struct  proc *uio_procp;
                     64: };
                     65: 
                     66:  /*
                     67:   * Limits
                     68:   */
                     69: #define UIO_MAXIOV     1024            /* max 1K of iov's */
                     70: #define UIO_SMALLIOV   8               /* 8 on stack, else malloc */
                     71: 
                     72: #ifndef        KERNEL
                     73: 
                     74: #include <sys/cdefs.h>
                     75: 
                     76: __BEGIN_DECLS
                     77: int    readv __P((int, const struct iovec *, int));
                     78: int    writev __P((int, const struct iovec *, int));
1.1.1.2 ! root       79: int    uiomove __P((caddr_t cp, int n, struct uio *uio));
        !            80: int    uioapply __P((int (*func)(), int arg1, int arg2,
        !            81:                struct uio *uio));
        !            82: int    ureadc __P((int c, struct uio *uio));
        !            83: int    uwritec __P((struct uio *uio));
1.1       root       84: __END_DECLS
                     85: 
                     86: #endif /* !KERNEL */
                     87: 
1.1.1.2 ! root       88: #endif /* !_SYS_UIO_H_ */

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