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/* $NetBSD: proc.h,v 1.323 2015/09/24 14:33:31 christos Exp $ */
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/*-
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* Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1986, 1989, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)proc.h 8.15 (Berkeley) 5/19/95
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*/
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#ifndef _SYS_PROC_H_
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#define _SYS_PROC_H_
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#include <sys/lwp.h> |
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#if defined(_KMEMUSER) || defined(_KERNEL)
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#if defined(_KERNEL_OPT)
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#include "opt_multiprocessor.h" |
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#include "opt_kstack.h" |
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#include "opt_lockdebug.h" |
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#endif
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#include <machine/proc.h> /* Machine-dependent proc substruct */ |
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#include <machine/pcb.h> |
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#include <sys/aio.h> |
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#include <sys/rwlock.h> |
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#include <sys/mqueue.h> |
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#include <sys/mutex.h> |
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#include <sys/condvar.h> |
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#include <sys/queue.h> |
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#include <sys/signalvar.h> |
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#include <sys/siginfo.h> |
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#include <sys/event.h> |
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#include <sys/specificdata.h> |
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#ifndef _KERNEL
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#endif
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/*
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* One structure allocated per session.
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*/
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struct session {
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int s_count; /* Ref cnt; pgrps in session */ |
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u_int s_flags; |
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#define S_LOGIN_SET 1 /* s_login set in this session */ |
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struct proc *s_leader; /* Session leader */ |
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struct vnode *s_ttyvp; /* Vnode of controlling terminal */ |
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struct tty *s_ttyp; /* Controlling terminal */ |
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char s_login[MAXLOGNAME]; /* Setlogin() name */ |
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pid_t s_sid; /* Session ID (pid of leader) */
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}; |
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/*
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* One structure allocated per process group.
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*/
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struct pgrp {
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LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */
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struct session *pg_session; /* Pointer to session */ |
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pid_t pg_id; /* Pgrp id */
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int pg_jobc; /* |
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* Number of processes qualifying
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* pgrp for job control
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*/
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}; |
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/*
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* One structure allocated per emulation.
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*/
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struct exec_package;
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struct ras;
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struct kauth_cred;
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struct emul {
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const char *e_name; /* Symbolic name */ |
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const char *e_path; /* Extra emulation path (NULL if none)*/ |
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#ifndef __HAVE_MINIMAL_EMUL
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int e_flags; /* Miscellaneous flags, see above */ |
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/* Syscall handling function */
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const int *e_errno; /* Errno array */ |
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int e_nosys; /* Offset of the nosys() syscall */ |
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int e_nsysent; /* Number of system call entries */ |
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#endif
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struct sysent *e_sysent; /* System call array */ |
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const char * const *e_syscallnames; /* System call name array */ |
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/* Signal sending function */
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void (*e_sendsig)(const struct ksiginfo *, |
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const sigset_t *);
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void (*e_trapsignal)(struct lwp *, struct ksiginfo *); |
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int (*e_tracesig)(struct proc *, int); |
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char *e_sigcode; /* Start of sigcode */ |
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char *e_esigcode; /* End of sigcode */ |
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/* Set registers before execution */
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struct uvm_object **e_sigobject;/* shared sigcode object */ |
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void (*e_setregs)(struct lwp *, struct exec_package *, |
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vaddr_t); |
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/* Per-process hooks */
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void (*e_proc_exec)(struct proc *, struct exec_package *); |
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void (*e_proc_fork)(struct proc *, struct lwp *, int); |
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void (*e_proc_exit)(struct proc *); |
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void (*e_lwp_fork)(struct lwp *, struct lwp *); |
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void (*e_lwp_exit)(struct lwp *); |
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#ifdef __HAVE_SYSCALL_INTERN
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void (*e_syscall_intern)(struct proc *); |
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#else
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void (*e_syscall)(void); |
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#endif
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/* Emulation specific sysctl data */
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struct sysctlnode *e_sysctlovly;
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int (*e_fault)(struct proc *, vaddr_t, int); |
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vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t);
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/* Emulation-specific hook for userspace page faults */
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int (*e_usertrap)(struct lwp *, vaddr_t, void *); |
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size_t e_ucsize; /* size of ucontext_t */
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void (*e_startlwp)(void *); |
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/* Dtrace syscall probe */
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void (*e_dtrace_syscall)(uint32_t, register_t,
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const struct sysent *, const void *, |
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const register_t *, int); |
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}; |
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/*
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* Emulation miscelaneous flags
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*/
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#define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */ |
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/*
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* Description of a process.
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*
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* This structure contains the information needed to manage a thread of
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* control, known in UN*X as a process; it has references to substructures
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* containing descriptions of things that the process uses, but may share
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* with related processes. The process structure and the substructures
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* are always addressible except for those marked "(PROC ONLY)" below,
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* which might be addressible only on a processor on which the process
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* is running.
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*
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* Field markings and the corresponding locks:
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*
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* a: p_auxlock
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* k: ktrace_mutex
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* l: proc_lock
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* t: p_stmutex
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* p: p_lock
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* (: updated atomically
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* :: unlocked, stable
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*/
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struct vmspace;
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struct proc {
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LIST_ENTRY(proc) p_list; /* l: List of all processes */
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kmutex_t p_auxlock; /* :: secondary, longer term lock */
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kmutex_t *p_lock; /* :: general mutex */
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kmutex_t p_stmutex; /* :: mutex on profiling state */
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krwlock_t p_reflock; /* p: lock for debugger, procfs */
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kcondvar_t p_waitcv; /* p: wait, stop CV on children */
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kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */
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/* Substructures: */
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struct kauth_cred *p_cred; /* p: Master copy of credentials */ |
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struct filedesc *p_fd; /* :: Ptr to open files structure */ |
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struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */ |
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struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */ |
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struct plimit *p_limit; /* :: Process limits */ |
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struct vmspace *p_vmspace; /* :: Address space */ |
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struct sigacts *p_sigacts; /* :: Process sigactions */ |
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struct aioproc *p_aio; /* p: Asynchronous I/O data */ |
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u_int p_mqueue_cnt; /* (: Count of open message queues */
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specificdata_reference |
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p_specdataref; /* subsystem proc-specific data */
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int p_exitsig; /* l: signal to send to parent on exit */ |
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int p_flag; /* p: PK_* flags */ |
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int p_sflag; /* p: PS_* flags */ |
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int p_slflag; /* s, l: PSL_* flags */ |
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int p_lflag; /* l: PL_* flags */ |
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int p_stflag; /* t: PST_* flags */ |
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char p_stat; /* p: S* process status. */ |
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char p_trace_enabled;/* p: cached by syscall_intern() */ |
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char p_pad1[2]; /* unused */ |
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pid_t p_pid; /* :: Process identifier. */
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LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */
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struct proc *p_pptr; /* l: Pointer to parent process. */ |
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LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */
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LIST_HEAD(, proc) p_children; /* l: List of children. */
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LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */
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struct ras *p_raslist; /* a: List of RAS entries */ |
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/* The following fields are all zeroed upon creation in fork. */
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#define p_startzero p_nlwps
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int p_nlwps; /* p: Number of LWPs */ |
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int p_nzlwps; /* p: Number of zombie LWPs */ |
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int p_nrlwps; /* p: Number running/sleeping LWPs */ |
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int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */ |
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int p_ndlwps; /* p: Number of detached LWPs */ |
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int p_nlwpid; /* p: Next LWP ID */ |
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u_int p_nstopchild; /* l: Count of stopped/dead children */
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u_int p_waited; /* l: parent has waited on child */
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struct lwp *p_zomblwp; /* p: detached LWP to be reaped */ |
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struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */ |
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/* scheduling */
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void *p_sched_info; /* p: Scheduler-specific structure */ |
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fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */
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fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */
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unsigned int p_forktime; |
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fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */
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struct proc *p_opptr; /* l: save parent during ptrace. */ |
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struct ptimers *p_timers; /* Timers: real, virtual, profiling */ |
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struct bintime p_rtime; /* p: real time */ |
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u_quad_t p_uticks; /* t: Statclock hits in user mode */
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u_quad_t p_sticks; /* t: Statclock hits in system mode */
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u_quad_t p_iticks; /* t: Statclock hits processing intr */
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int p_traceflag; /* k: Kernel trace points */ |
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void *p_tracep; /* k: Trace private data */ |
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struct vnode *p_textvp; /* :: Vnode of executable */ |
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struct emul *p_emul; /* :: emulation information */ |
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void *p_emuldata; /* :: per-proc emul data, or NULL */ |
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const struct execsw *p_execsw; /* :: exec package information */ |
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struct klist p_klist; /* p: knotes attached to proc */ |
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LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */
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sigpend_t p_sigpend; /* p: pending signals */
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struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */ |
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pid_t p_ppid; /* :: cached parent pid */
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pid_t p_fpid; /* :: forked pid */
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/*
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* End area that is zeroed on creation
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*/
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#define p_endzero p_startcopy
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/*
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* The following fields are all copied upon creation in fork.
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*/
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#define p_startcopy p_sigctx
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struct sigctx p_sigctx; /* p: Shared signal state */ |
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u_char p_nice; /* p: Process "nice" value */
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char p_comm[MAXCOMLEN+1]; |
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/* p: basename of last exec file */
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struct pgrp *p_pgrp; /* l: Pointer to process group */ |
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vaddr_t p_psstrp; /* :: address of process's ps_strings */
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u_int p_pax; /* :: PAX flags */
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/*
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* End area that is copied on creation
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*/
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#define p_endcopy p_xstat
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u_short p_xstat; /* p: Exit status for wait; also stop signal */
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u_short p_acflag; /* p: Acc. flags; see struct lwp also */
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struct mdproc p_md; /* p: Any machine-dependent fields */ |
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vaddr_t p_stackbase; /* :: ASLR randomized stack base */
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struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ |
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}; |
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#define p_rlimit p_limit->pl_rlimit
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#define p_session p_pgrp->pg_session
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#define p_pgid p_pgrp->pg_id
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#endif /* _KMEMUSER || _KERNEL */ |
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/*
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* Status values.
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*/
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#define SIDL 1 /* Process being created by fork */ |
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#define SACTIVE 2 /* Process is not stopped */ |
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#define SDYING 3 /* About to die */ |
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#define SSTOP 4 /* Process debugging or suspension */ |
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#define SZOMB 5 /* Awaiting collection by parent */ |
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#define SDEAD 6 /* Almost a zombie */ |
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#define P_ZOMBIE(p) \
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((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD) |
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/*
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* These flags are kept in p_flag and are protected by p_lock. Access from
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* process context only.
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*/
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#define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */ |
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#define PK_SYSTEM 0x00000002 /* System process (kthread) */ |
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#define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */ |
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#define PK_SUGID 0x00000100 /* Had set id privileges since last exec */ |
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#define PK_EXEC 0x00004000 /* Process called exec */ |
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#define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */ |
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#define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */ |
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#define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */ |
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#define PK_MARKER 0x80000000 /* Is a dummy marker process */ |
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/*
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* These flags are kept in p_sflag and are protected by p_lock. Access from
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* process context only.
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*/
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#define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ |
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#define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */ |
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#define PS_WCORE 0x00001000 /* Process needs to dump core */ |
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#define PS_WEXIT 0x00002000 /* Working on exiting */ |
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#define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */ |
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#define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */ |
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#define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */ |
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#define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */ |
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#define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */ |
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/*
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* These flags are kept in p_sflag and are protected by the proc_lock
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* and p_lock. Access from process context only.
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*/
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#define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */ |
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#define PSL_TRACED 0x00000800 /* Debugged process being traced */ |
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#define PSL_FSTRACE 0x00010000 /* Debugger process being traced by procfs */ |
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#define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */ |
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#define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */ |
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#define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */ |
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/*
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* Kept in p_stflag and protected by p_stmutex.
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*/
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#define PST_PROFIL 0x00000020 /* Has started profiling */ |
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/*
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* The final set are protected by the proc_lock. Access
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* from process context only.
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*/
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#define PL_CONTROLT 0x00000002 /* Has a controlling terminal */ |
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#define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */ |
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#define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */ |
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#define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */ |
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#if defined(_KMEMUSER) || defined(_KERNEL)
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/*
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* Macro to compute the exit signal to be delivered.
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*/
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#define P_EXITSIG(p) \
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(((p)->p_slflag & (PSL_TRACED|PSL_FSTRACE)) ? SIGCHLD : p->p_exitsig) |
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LIST_HEAD(proclist, proc); /* A list of processes */
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/*
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* This structure associates a proclist with its lock.
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*/
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struct proclist_desc {
|
| 417 |
struct proclist *pd_list; /* The list */ |
| 418 |
/*
|
| 419 |
* XXX Add a pointer to the proclist's lock eventually.
|
| 420 |
*/
|
| 421 |
}; |
| 422 |
|
| 423 |
#ifdef _KERNEL
|
| 424 |
|
| 425 |
/*
|
| 426 |
* We use process IDs <= PID_MAX until there are > 16k processes.
|
| 427 |
* NO_PGID is used to represent "no process group" for a tty.
|
| 428 |
*/
|
| 429 |
#define PID_MAX 30000 |
| 430 |
#define NO_PGID ((pid_t)-1) |
| 431 |
|
| 432 |
#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
|
| 433 |
|
| 434 |
/*
|
| 435 |
* Flags passed to fork1().
|
| 436 |
*/
|
| 437 |
#define FORK_PPWAIT 0x0001 /* Block parent until child exit */ |
| 438 |
#define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ |
| 439 |
#define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ |
| 440 |
#define FORK_SHAREFILES 0x0008 /* Share file descriptors */ |
| 441 |
#define FORK_SHARESIGS 0x0010 /* Share signal actions */ |
| 442 |
#define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ |
| 443 |
#define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ |
| 444 |
#define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ |
| 445 |
|
| 446 |
extern struct proc proc0; /* Process slot for swapper */ |
| 447 |
extern u_int nprocs; /* Current number of procs */ |
| 448 |
extern int maxproc; /* Max number of procs */ |
| 449 |
#define vmspace_kernel() (proc0.p_vmspace)
|
| 450 |
|
| 451 |
extern kmutex_t *proc_lock;
|
| 452 |
extern struct proclist allproc; /* List of all processes */ |
| 453 |
extern struct proclist zombproc; /* List of zombie processes */ |
| 454 |
|
| 455 |
extern struct proc *initproc; /* Process slots for init, pager */ |
| 456 |
|
| 457 |
extern const struct proclist_desc proclists[]; |
| 458 |
|
| 459 |
extern struct pool ptimer_pool; /* Memory pool for ptimers */ |
| 460 |
|
| 461 |
int proc_find_locked(struct lwp *, struct proc **, pid_t); |
| 462 |
proc_t * proc_find_raw(pid_t); |
| 463 |
proc_t * proc_find(pid_t); /* Find process by ID */
|
| 464 |
struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ |
| 465 |
|
| 466 |
void procinit(void); |
| 467 |
void procinit_sysctl(void); |
| 468 |
int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); |
| 469 |
void proc_leavepgrp(struct proc *); |
| 470 |
void proc_sesshold(struct session *); |
| 471 |
void proc_sessrele(struct session *); |
| 472 |
void fixjobc(struct proc *, struct pgrp *, int); |
| 473 |
|
| 474 |
int tsleep(wchan_t, pri_t, const char *, int); |
| 475 |
int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); |
| 476 |
void wakeup(wchan_t);
|
| 477 |
int kpause(const char *, bool, int, kmutex_t *); |
| 478 |
void exit1(struct lwp *, int) __dead; |
| 479 |
int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval); |
| 480 |
int do_sys_wait(int *, int *, int, struct rusage *); |
| 481 |
struct proc *proc_alloc(void); |
| 482 |
void proc0_init(void); |
| 483 |
pid_t proc_alloc_pid(struct proc *);
|
| 484 |
void proc_free_pid(pid_t);
|
| 485 |
void proc_free_mem(struct proc *); |
| 486 |
void exit_lwps(struct lwp *l); |
| 487 |
int fork1(struct lwp *, int, int, void *, size_t, |
| 488 |
void (*)(void *), void *, register_t *, struct proc **); |
| 489 |
int pgid_in_session(struct proc *, pid_t); |
| 490 |
void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, |
| 491 |
void (*)(void *), void *); |
| 492 |
void cpu_lwp_free(struct lwp *, int); |
| 493 |
void cpu_lwp_free2(struct lwp *); |
| 494 |
void cpu_spawn_return(struct lwp*); |
| 495 |
|
| 496 |
#ifdef __HAVE_SYSCALL_INTERN
|
| 497 |
void syscall_intern(struct proc *); |
| 498 |
#endif
|
| 499 |
|
| 500 |
void child_return(void *); |
| 501 |
|
| 502 |
int proc_isunder(struct proc *, struct lwp *); |
| 503 |
void proc_stop(struct proc *, int, int); |
| 504 |
int proc_uidmatch(kauth_cred_t, kauth_cred_t);
|
| 505 |
|
| 506 |
int proc_vmspace_getref(struct proc *, struct vmspace **); |
| 507 |
void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); |
| 508 |
void proc_crmod_enter(void); |
| 509 |
|
| 510 |
int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t);
|
| 511 |
void proc_specific_key_delete(specificdata_key_t);
|
| 512 |
void proc_initspecific(struct proc *); |
| 513 |
void proc_finispecific(struct proc *); |
| 514 |
void * proc_getspecific(struct proc *, specificdata_key_t); |
| 515 |
void proc_setspecific(struct proc *, specificdata_key_t, void *); |
| 516 |
int proc_compare(const struct proc *, const struct lwp *, |
| 517 |
const struct proc *, const struct lwp *); |
| 518 |
|
| 519 |
int proclist_foreach_call(struct proclist *, |
| 520 |
int (*)(struct proc *, void *arg), void *); |
| 521 |
|
| 522 |
static inline struct proc * |
| 523 |
_proclist_skipmarker(struct proc *p0)
|
| 524 |
{
|
| 525 |
struct proc *p = p0;
|
| 526 |
|
| 527 |
while (p != NULL && p->p_flag & PK_MARKER) |
| 528 |
p = LIST_NEXT(p, p_list); |
| 529 |
|
| 530 |
return p;
|
| 531 |
} |
| 532 |
|
| 533 |
/*
|
| 534 |
* PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones.
|
| 535 |
*/
|
| 536 |
#define PROCLIST_FOREACH(var, head) \
|
| 537 |
for ((var) = LIST_FIRST(head); \
|
| 538 |
((var) = _proclist_skipmarker(var)) != NULL; \
|
| 539 |
(var) = LIST_NEXT(var, p_list)) |
| 540 |
|
| 541 |
#ifdef KSTACK_CHECK_MAGIC
|
| 542 |
void kstack_setup_magic(const struct lwp *); |
| 543 |
void kstack_check_magic(const struct lwp *); |
| 544 |
#else
|
| 545 |
#define kstack_setup_magic(x)
|
| 546 |
#define kstack_check_magic(x)
|
| 547 |
#endif
|
| 548 |
|
| 549 |
extern struct emul emul_netbsd; |
| 550 |
|
| 551 |
#endif /* _KERNEL */ |
| 552 |
|
| 553 |
/*
|
| 554 |
* Kernel stack parameters.
|
| 555 |
*
|
| 556 |
* KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack,
|
| 557 |
* excluding red-zone.
|
| 558 |
*
|
| 559 |
* KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone.
|
| 560 |
*
|
| 561 |
* if <machine/proc.h> provides the MD definition, it will be used.
|
| 562 |
*/
|
| 563 |
#ifndef KSTACK_LOWEST_ADDR
|
| 564 |
#define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) |
| 565 |
#endif
|
| 566 |
#ifndef KSTACK_SIZE
|
| 567 |
#define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) |
| 568 |
#endif
|
| 569 |
|
| 570 |
#endif /* _KMEMUSER || _KERNEL */ |
| 571 |
|
| 572 |
#endif /* !_SYS_PROC_H_ */ |