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Annotation of XNU/bsd/sys/user.h, revision 1.1

1.1     ! root        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:        struct timeval uu_syst;                 /* snapshot for profiling */
        !            99:        union {
        !           100:                struct _select {
        !           101:                        fd_set  ibits[3], obits[3];
        !           102:                        struct  timeval atv;
        !           103:                        int     poll, error;
        !           104:                } ss_select;                    /* saved state for select() */
        !           105:                struct _wait {
        !           106:                        int     f;
        !           107:                } ss_wait;                      /* saved state for wait?() */
        !           108:          struct _owait {
        !           109:                int pid;
        !           110:                int *status;
        !           111:                int options;
        !           112:                struct rusage *rusage;
        !           113:          } ss_owait;
        !           114:          int uu_nfs_myiod;    /* saved state for nfsd */
        !           115:        } uu_state;
        !           116: 
        !           117:   /* internal support for continuation framework */
        !           118:     int (*uu_continuation)(int);
        !           119:     int uu_pri;
        !           120:     int uu_timo;
        !           121: 
        !           122: };
        !           123: typedef struct uthread * uthread_t;
        !           124: #endif /* KERNEL */
        !           125: 
        !           126: /*
        !           127:  * Per process structure containing data that isn't needed in core
        !           128:  * when the process isn't running (esp. when swapped out).
        !           129:  * This structure may or may not be at the same kernel address
        !           130:  * in all processes.
        !           131:  */
        !           132:  
        !           133: struct user {
        !           134:   /* NOT USED ANYMORE */
        !           135: };
        !           136: 
        !           137: #endif /* !_SYS_USER_H_ */

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