1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  25  */
  26 
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29 
  30 #ifndef _SYS_PROC_H
  31 #define _SYS_PROC_H
  32 
  33 #include <sys/time.h>
  34 #include <sys/thread.h>
  35 #include <sys/cred.h>
  36 #include <sys/debug.h>
  37 #include <sys/signal.h>
  38 #include <sys/list.h>
  39 #include <sys/avl.h>
  40 #include <sys/refstr.h>
  41 
  42 #ifdef  __cplusplus
  43 extern "C" {
  44 #endif
  45 
  46 struct pool;
  47 struct task;
  48 struct zone;
  49 
  50 /*
  51  * One structure allocated per active process.  It contains all
  52  * data needed about the process while the process may be swapped
  53  * out.  Other per-process data (user.h) is also inside the proc structure.
  54  * Lightweight-process data (lwp.h) and the kernel stack may be swapped out.
  55  */
  56 typedef struct  proc {
  57 
  58         struct  cred    *p_cred;        /* process credentials */
  59 
  60         struct  pid     *p_pidp;        /* process ID info */
  61         struct  pid     *p_pgidp;       /* process group ID info */
  62 
  63         /*
  64          * Per process lwp and kernel thread stuff
  65          */
  66 
  67         struct zone     *p_zone;        /* zone in which process lives */
  68 
  69         int do_not_use[10];
  70         int p_user[10];         /* (see sys/user.h) */
  71 } proc_t;
  72 
  73 #define PROC_T                          /* headers relying on proc_t are OK */
  74 
  75 /* process ID info */
  76 
  77 struct pid {
  78         unsigned int pid_prinactive :1;
  79         unsigned int pid_pgorphaned :1;
  80         unsigned int pid_padding :6;    /* used to be pid_ref, now an int */
  81         unsigned int pid_prslot :24;
  82         pid_t pid_id;
  83         struct proc *pid_pglink;
  84         struct proc *pid_pgtail;
  85         struct pid *pid_link;
  86         uint_t pid_ref;
  87 };
  88 
  89 #define p_pgrp p_pgidp->pid_id
  90 #define p_pid  p_pidp->pid_id
  91 #define p_slot p_pidp->pid_prslot
  92 #define p_detached p_pgidp->pid_pgorphaned
  93 
  94 #define PID_HOLD(pidp)  ASSERT(MUTEX_HELD(&pidlock)); \
  95                         ++(pidp)->pid_ref;
  96 #define PID_RELE(pidp)  ASSERT(MUTEX_HELD(&pidlock)); \
  97                         (pidp)->pid_ref > 1 ? \
  98                                 --(pidp)->pid_ref : pid_rele(pidp);
  99 
 100 /*
 101  * Structure containing persistent process lock.  The structure and
 102  * macro allow "mutex_enter(&p->p_lock)" to continue working.
 103  */
 104 struct plock {
 105         kmutex_t pl_lock;
 106 };
 107 #define p_lock  p_lockp->pl_lock
 108 
 109 extern proc_t p0;               /* process 0 */
 110 extern struct plock p0lock;     /* p0's plock */
 111 extern struct pid pid0;         /* p0's pid */
 112 
 113 
 114 /*
 115  * This is normally in sunddi.h but
 116  * I didn't want to drag that in here.
 117  */
 118 pid_t
 119 ddi_get_pid(void);
 120 
 121 #ifdef  __cplusplus
 122 }
 123 #endif
 124 
 125 #endif  /* _SYS_PROC_H */