+++ /dev/null
-/*
- * Copyright (c) 1996-1998 University of Utah and the Flux Group.
- * All rights reserved.
- *
- * This file is part of the Flux OSKit. The OSKit is free software, also known
- * as "open source;" you can redistribute it and/or modify it under the terms
- * of the GNU General Public License (GPL), version 2, as published by the Free
- * Software Foundation (FSF). To explore alternate licensing terms, contact
- * the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
- *
- * The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
- * received a copy of the GPL along with the OSKit; see the file COPYING. If
- * not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
- */
-/*-
- * Copyright (c) 1986, 1989, 1991, 1993
- * The Regents of the University of California. All rights reserved.
- * (c) UNIX System Laboratories, Inc.
- * All or some portions of this file are derived from material licensed
- * to the University of California by American Telephone and Telegraph
- * Co. or Unix System Laboratories, Inc. and are reproduced herein with
- * the permission of UNIX System Laboratories, Inc.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- *
- * @(#)proc.h 8.8 (Berkeley) 1/21/94
- * $\Id: proc.h,v 1.17.4.1 1996/06/04 02:45:01 davidg Exp $
- */
-
-#ifndef _SYS_PROC_H_
-#define _SYS_PROC_H_
-
-#include <machine/proc.h> /* Machine-dependent proc substruct. */
-#include <sys/rtprio.h> /* For struct rtprio. */
-#include <sys/select.h> /* For struct selinfo. */
-#include <sys/time.h> /* For structs itimerval, timeval. */
-#include <sys/socketvar.h>
-
-#ifdef OSKIT
-#include <oskit/dev/dev.h>
-#endif
-
-/*
- * One structure allocated per session.
- */
-struct session {
- int s_count; /* Ref cnt; pgrps in session. */
- struct proc *s_leader; /* Session leader. */
- struct vnode *s_ttyvp; /* Vnode of controlling terminal. */
- struct tty *s_ttyp; /* Controlling terminal. */
- char s_login[MAXLOGNAME]; /* Setlogin() name. */
-};
-
-/*
- * One structure allocated per process group.
- */
-struct pgrp {
- struct pgrp *pg_hforw; /* Forward link in hash bucket. */
- struct proc *pg_mem; /* Pointer to pgrp members. */
- struct session *pg_session; /* Pointer to session. */
- pid_t pg_id; /* Pgrp id. */
- int pg_jobc; /* # procs qualifying pgrp for job control */
-};
-
-/*
- * Description of a process.
- *
- * This structure contains the information needed to manage a thread of
- * control, known in UN*X as a process; it has references to substructures
- * containing descriptions of things that the process uses, but may share
- * with related processes. The process structure and the substructures
- * are always addressible except for those marked "(PROC ONLY)" below,
- * which might be addressible only on a processor on which the process
- * is running.
- */
-struct proc {
-#ifndef OSKIT
- struct proc *p_forw; /* Doubly-linked run/sleep queue. */
- struct proc *p_back;
- struct proc *p_next; /* Linked list of active procs */
- struct proc **p_prev; /* and zombies. */
-
- /* substructures: */
- struct pcred *p_cred; /* Process owner's identity. */
- struct filedesc *p_fd; /* Ptr to open files structure. */
- struct pstats *p_stats; /* Accounting/statistics (PROC ONLY). */
- struct plimit *p_limit; /* Process limits. */
- struct vmspace *p_vmspace; /* Address space. */
- struct sigacts *p_sigacts; /* Signal actions, state (PROC ONLY). */
-
-#define p_ucred p_cred->pc_ucred
-#define p_rlimit p_limit->pl_rlimit
-
- int p_flag; /* P_* flags. */
- char p_stat; /* S* process status. */
-
- char p_pad1[3];
-
- pid_t p_pid; /* Process identifier. */
- struct proc *p_hash; /* Hashed based on p_pid for kill+exit+... */
- struct proc *p_pgrpnxt; /* Pointer to next process in process group. */
- struct proc *p_pptr; /* Pointer to process structure of parent. */
- struct proc *p_osptr; /* Pointer to older sibling processes. */
-
-/* The following fields are all zeroed upon creation in fork. */
-#define p_startzero p_ysptr
- struct proc *p_ysptr; /* Pointer to younger siblings. */
- struct proc *p_cptr; /* Pointer to youngest living child. */
- pid_t p_oppid; /* Save parent pid during ptrace. XXX */
- int p_dupfd; /* Sideways return value from fdopen. XXX */
-
- /* scheduling */
- u_int p_estcpu; /* Time averaged value of p_cpticks. */
- int p_cpticks; /* Ticks of cpu time. */
- fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */
- void *p_wchan; /* Sleep address. */
- char *p_wmesg; /* Reason for sleep. */
- u_int p_swtime; /* Time swapped in or out. */
- u_int p_slptime; /* Time since last blocked. */
-
- struct itimerval p_realtimer; /* Alarm timer. */
- struct timeval p_rtime; /* Real time. */
- u_quad_t p_uticks; /* Statclock hits in user mode. */
- u_quad_t p_sticks; /* Statclock hits in system mode. */
- u_quad_t p_iticks; /* Statclock hits processing intr. */
-
- int p_traceflag; /* Kernel trace points. */
- struct vnode *p_tracep; /* Trace to vnode. */
-
- int p_siglist; /* Signals arrived but not delivered. */
-
- struct vnode *p_textvp; /* Vnode of executable. */
-
- char p_lock; /* Process lock count. */
- char p_pad2[3]; /* alignment */
- long p_spare[2]; /* Pad to 256, avoid shifting eproc. XXX */
-
-/* End area that is zeroed on creation. */
-#define p_endzero p_startcopy
-
-/* The following fields are all copied upon creation in fork. */
-#define p_startcopy p_sigmask
-
- sigset_t p_sigmask; /* Current signal mask. */
- sigset_t p_sigignore; /* Signals being ignored. */
- sigset_t p_sigcatch; /* Signals being caught by user. */
-
- u_char p_priority; /* Process priority. */
- u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */
- char p_nice; /* Process "nice" value. */
- char p_comm[MAXCOMLEN+1];
-
- struct pgrp *p_pgrp; /* Pointer to process group. */
-
- struct sysentvec *p_sysent; /* System call dispatch information. */
-
- struct rtprio p_rtprio; /* Realtime priority. */
-/* End area that is copied on creation. */
-#define p_endcopy p_thread
- int p_thread; /* Id for this "thread"; Mach glue. XXX */
- struct user *p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
- struct mdproc p_md; /* Any machine-dependent fields. */
-
- u_short p_xstat; /* Exit status for wait; also stop signal. */
- u_short p_acflag; /* Accounting flags. */
- struct rusage *p_ru; /* Exit information. XXX */
-#else /* OSKIT */
- /*
- * let's build our own rudimentary struct proc
- */
- struct proc *p_forw; /* Doubly-linked run/sleep queue. */
- struct pcred *p_cred; /* Process owner's identity. */
- struct pstats *p_stats; /* Accounting/statistics (PROC ONLY). */
-#define p_ucred p_cred->pc_ucred
- int p_flag; /* P_* flags. */
- char p_stat; /* S* process status. */
- pid_t p_pid; /* Process identifier. */
- void *p_wchan; /* Sleep address. */
- char *p_wmesg; /* Reason for sleep. */
- u_short p_acflag; /* Accounting flags. */
-
- osenv_sleeprec_t p_sr;
- /*
- * When selrecord is invoked, this points to an object used to
- * manage a set of listeners
- */
- struct listener_mgr *p_sel;
-#endif /* !OSKIT */
-};
-
-#define p_session p_pgrp->pg_session
-#define p_pgid p_pgrp->pg_id
-
-/* Status values. */
-#define SIDL 1 /* Process being created by fork. */
-#define SRUN 2 /* Currently runnable. */
-#define SSLEEP 3 /* Sleeping on an address. */
-#define SSTOP 4 /* Process debugging or suspension. */
-#define SZOMB 5 /* Awaiting collection by parent. */
-
-/* These flags are kept in p_flags. */
-#define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock. */
-#define P_CONTROLT 0x00002 /* Has a controlling terminal. */
-#define P_INMEM 0x00004 /* Loaded into memory. */
-#define P_NOCLDSTOP 0x00008 /* No SIGCHLD when children stop. */
-#define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit. */
-#define P_PROFIL 0x00020 /* Has started profiling. */
-#define P_SELECT 0x00040 /* Selecting; wakeup/waiting danger. */
-#define P_SINTR 0x00080 /* Sleep is interruptible. */
-#define P_SUGID 0x00100 /* Had set id privileges since last exec. */
-#define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping. */
-#define P_TIMEOUT 0x00400 /* Timing out during sleep. */
-#define P_TRACED 0x00800 /* Debugged process being traced. */
-#define P_WAITED 0x01000 /* Debugging process has waited for child. */
-#define P_WEXIT 0x02000 /* Working on exiting. */
-#define P_EXEC 0x04000 /* Process called exec. */
-#define P_SWAPPING 0x40000 /* Process is being swapped. */
-
-/* Should probably be changed into a hold count (They have. -DG). */
-#define P_NOSWAP 0x08000 /* Another flag to prevent swap out. */
-#define P_PHYSIO 0x10000 /* Doing physical I/O. */
-
-/* Should be moved to machine-dependent areas. */
-#define P_OWEUPC 0x20000 /* Owe process an addupc() call at next ast. */
-
-/*
- * MOVE TO ucred.h?
- *
- * Shareable process credentials (always resident). This includes a reference
- * to the current user credentials as well as real and saved ids that may be
- * used to change ids.
- */
-struct pcred {
- struct ucred *pc_ucred; /* Current credentials. */
- uid_t p_ruid; /* Real user id. */
- uid_t p_svuid; /* Saved effective user id. */
- gid_t p_rgid; /* Real group id. */
- gid_t p_svgid; /* Saved effective group id. */
- int p_refcnt; /* Number of references. */
-};
-
-#ifdef KERNEL
-/*
- * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t,
- * as it is used to represent "no process group".
- */
-#define PID_MAX 30000
-#define NO_PID 30001
-#define PIDHASH(pid) ((pid) & pidhashmask)
-
-#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
-#define SESSHOLD(s) ((s)->s_count++)
-#define SESSRELE(s) { \
- if (--(s)->s_count == 0) \
- FREE(s, M_SESSION); \
-}
-
-extern struct proc *pidhash[]; /* In param.c. */
-extern struct pgrp *pgrphash[]; /* In param.c. */
-extern struct proc *curproc; /* Current running proc. */
-extern struct proc proc0; /* Process slot for swapper. */
-extern int nprocs, maxproc; /* Current and max number of procs. */
-extern int maxprocperuid; /* Max procs per uid. */
-extern int pidhashmask; /* In param.c. */
-
-extern volatile struct proc *allproc; /* List of active procs. */
-extern struct proc *zombproc; /* List of zombie procs. */
-extern struct proc *initproc, *pageproc; /* Process slots for init, pager. */
-
-#define NQS 32 /* 32 run queues. */
-struct prochd {
- struct proc *ph_link; /* Linked list of running processes. */
- struct proc *ph_rlink;
-};
-extern struct prochd qs[];
-extern struct prochd rtqs[];
-extern struct prochd idqs[];
-extern int whichqs; /* Bit mask summary of non-empty Q's. */
-
-int chgproccnt __P((uid_t, int));
-struct proc *pfind __P((pid_t)); /* Find process by id. */
-struct proc *zpfind __P((pid_t)); /* Find zombie process by id. */
-struct pgrp *pgfind __P((pid_t)); /* Find process group by id. */
-void mi_switch __P((void));
-void resetpriority __P((struct proc *));
-void roundrobin __P((void *));
-void schedcpu __P((void *));
-void setrunnable __P((struct proc *));
-void setrunqueue __P((struct proc *));
-void remrq __P((struct proc *));
-void cpu_switch __P((struct proc *));
-void sleep __P((void *chan, int pri));
-int tsleep __P((void *chan, int pri, char *wmesg, int timo));
-void unsleep __P((struct proc *));
-void wakeup __P((struct socket *so, void *chan));
-
-__dead void cpu_exit __P((struct proc *)) __dead2;
-__dead void exit1 __P((struct proc *, int)) __dead2;
-void fixjobc __P((struct proc *, struct pgrp *, int));
-int acct_process __P((struct proc *));
-int leavepgrp __P((struct proc *));
-int enterpgrp __P((struct proc *, pid_t, int));
-int trace_req __P((struct proc *));
-void cpu_wait __P((struct proc *));
-int cpu_coredump __P((struct proc *, struct vnode *, struct ucred *));
-int inferior __P((struct proc *));
-#endif /* KERNEL */
-
-#endif /* !_SYS_PROC_H_ */
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