bsd/sys/user.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1982, 1986, 1989, 1991, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)user.h      8.2 (Berkeley) 9/23/93
  56  */
  57
  58 #ifndef _SYS_USER_H_
  59 #define _SYS_USER_H_
  60
  61 #ifndef KERNEL
  62 /* stuff that *used* to be included by user.h, or is now needed */
  63 #include <errno.h>
  64 #include <sys/time.h>
  65 #include <sys/resource.h>
  66 #include <sys/ucred.h>
  67 #include <sys/uio.h>
  68 #endif
  69 #include <sys/resourcevar.h>
  70 #include <sys/signalvar.h>
  71 #include <sys/vm.h>             /* XXX */
  72 #include <sys/sysctl.h>
  73
  74 #ifdef KERNEL
  75 /*
  76  *      Per-thread U area.
  77  *
  78  *      It is likely that this structure contains no fields that must be
  79  *      saved between system calls.
  80  *
  81  * WARNING:  IF THE SIZE OF THIS STRUCT CHANGES YOU MUST CHANGE THE
  82  *           CONSTANT IN struct thread_act.bsd_space
  83  */
  84 struct uthread {
  85         int     *uu_ar0;                /* address of users saved R0 */
  86
  87         /* syscall parameters, results and catches */
  88         int     uu_arg[8];              /* arguments to current system call */
  89         int     *uu_ap;                 /* pointer to arglist */
  90     int uu_rval[2];
  91
  92         /* thread exception handling */
  93         int     uu_code;                        /* ``code'' to trap */
  94         char uu_cursig;                         /* p_cursig for exc. */
  95         int  uu_sig;                            /* p_sig for exc. */
  96
  97         /* support for syscalls which use continuations */
  98         union {
  99                 struct _select {
 100                         u_int32_t       *ibits, *obits; /* bits to select on */
 101                         uint    nbytes; /* number of bytes in ibits and obits */
 102                         struct  timeval atv;
 103                         int     poll;
 104                         int error;
 105                 } ss_select;                    /* saved state for select() */
 106                 struct _wait {
 107                         int     f;
 108                 } ss_wait;                      /* saved state for wait?() */
 109           struct _owait {
 110                 int pid;
 111                 int *status;
 112                 int options;
 113                 struct rusage *rusage;
 114           } ss_owait;
 115           int uu_nfs_myiod;    /* saved state for nfsd */
 116         } uu_state;
 117
 118   /* internal support for continuation framework */
 119     int (*uu_continuation)(int);
 120     int uu_pri;
 121     int uu_timo;
 122
 123 };
 124 typedef struct uthread * uthread_t;
 125 #endif  /* KERNEL */
 126
 127 /*
 128  * Per process structure containing data that isn't needed in core
 129  * when the process isn't running (esp. when swapped out).
 130  * This structure may or may not be at the same kernel address
 131  * in all processes.
 132  */
 133
 134 struct  user {
 135   /* NOT USED ANYMORE */
 136 };
 137
 138 #endif  /* !_SYS_USER_H_ */