244 lines
8.7 KiB
C
244 lines
8.7 KiB
C
/*-
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* Copyright (c) 1982, 1988, 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* @(#)systm.h 8.7 (Berkeley) 3/29/95
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* $Id: systm.h,v 1.57 1997/09/07 09:43:44 bde Exp $
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*/
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#ifndef _SYS_SYSTM_H_
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#define _SYS_SYSTM_H_
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#include <machine/cpufunc.h>
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extern int securelevel; /* system security level (see init(8)) */
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extern int cold; /* nonzero if we are doing a cold boot */
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extern const char *panicstr; /* panic message */
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extern char version[]; /* system version */
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extern char copyright[]; /* system copyright */
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extern int nblkdev; /* number of entries in bdevsw */
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extern int nchrdev; /* number of entries in cdevsw */
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extern int nswap; /* size of swap space */
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extern int selwait; /* select timeout address */
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extern u_char curpriority; /* priority of current process */
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extern int physmem; /* physical memory */
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extern dev_t dumpdev; /* dump device */
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extern long dumplo; /* offset into dumpdev */
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extern dev_t rootdev; /* root device */
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extern struct vnode *rootvp; /* vnode equivalent to above */
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extern struct vnode *swapdev_vp;/* vnode for swap device */
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extern int boothowto; /* reboot flags, from console subsystem */
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extern int bootverbose; /* nonzero to print verbose messages */
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/*
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* General function declarations.
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*/
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void Debugger __P((const char *msg));
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int nullop __P((void));
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int eopnotsupp __P((void));
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int einval __P((void));
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int seltrue __P((dev_t dev, int which, struct proc *p));
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int ureadc __P((int, struct uio *));
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void *hashinit __P((int count, int type, u_long *hashmask));
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void *phashinit __P((int count, int type, u_long *nentries));
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void panic __P((const char *, ...)) __dead2;
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void boot __P((int)) __dead2;
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void cpu_boot __P((int));
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void tablefull __P((const char *));
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int addlog __P((const char *, ...));
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int kvprintf __P((char const *, void (*)(int, void*), void *, int,
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_BSD_VA_LIST_));
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void log __P((int, const char *, ...));
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int printf __P((const char *, ...));
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int sprintf __P((char *buf, const char *, ...));
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void uprintf __P((const char *, ...));
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void vprintf __P((const char *, _BSD_VA_LIST_));
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void ttyprintf __P((struct tty *, const char *, ...));
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void bcopy __P((const void *from, void *to, size_t len));
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void ovbcopy __P((const void *from, void *to, size_t len));
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extern void (*bzero) __P((void *buf, size_t len));
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void *memcpy __P((void *to, const void *from, size_t len));
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int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
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size_t *lencopied));
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int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
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size_t *lencopied));
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int copyin __P((const void *udaddr, void *kaddr, size_t len));
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int copyout __P((const void *kaddr, void *udaddr, size_t len));
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int fubyte __P((const void *base));
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int fuibyte __P((const void *base));
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int subyte __P((void *base, int byte));
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int suibyte __P((void *base, int byte));
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int fuword __P((const void *base));
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int suword __P((void *base, int word));
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int fusword __P((void *base));
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int susword __P((void *base, int word));
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struct timeval;
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int hzto __P((struct timeval *tv));
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void realitexpire __P((void *));
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struct clockframe;
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void hardclock __P((struct clockframe *frame));
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void softclock __P((void));
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void statclock __P((struct clockframe *frame));
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void startprofclock __P((struct proc *));
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void stopprofclock __P((struct proc *));
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void setstatclockrate __P((int hzrate));
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void hardupdate __P((long));
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void hardpps __P((struct timeval *tvp, long usec));
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#include <sys/libkern.h>
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/* Initialize the world */
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extern void consinit(void);
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extern void usrinfoinit(void);
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extern void cpu_initclocks(void);
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extern void vntblinit(void);
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extern void nchinit(void);
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/* Finalize the world. */
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void shutdown_nice __P((void));
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/*
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* Kernel to clock driver interface.
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*/
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void inittodr __P((time_t base));
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void resettodr __P((void));
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void startrtclock __P((void));
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/* Timeouts */
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typedef void (timeout_t)(void *); /* actual timeout function type */
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typedef timeout_t *timeout_func_t; /* a pointer to this type */
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void timeout(timeout_func_t, void *, int);
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void untimeout(timeout_func_t, void *);
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void logwakeup __P((void));
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/* Interrupt management */
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void setdelayed(void);
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void setsoftast(void);
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void setsoftclock(void);
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void setsoftnet(void);
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void setsofttty(void);
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void schedsoftnet(void);
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void schedsofttty(void);
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void spl0(void);
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intrmask_t softclockpending(void);
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intrmask_t splbio(void);
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intrmask_t splclock(void);
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intrmask_t splhigh(void);
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intrmask_t splimp(void);
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intrmask_t splnet(void);
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#ifdef SMP
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intrmask_t splq(intrmask_t mask);
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#endif
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intrmask_t splsoftclock(void);
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intrmask_t splsofttty(void);
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intrmask_t splstatclock(void);
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intrmask_t spltty(void);
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intrmask_t splvm(void);
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void splx(intrmask_t ipl);
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void splz(void);
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/*
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* XXX It's not clear how "machine independent" these will be yet, but
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* they are used all over the place especially in pci drivers. We would
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* have to modify lots of drivers since <machine/cpufunc.h> no longer
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* implicitly causes these to be defined when it #included <machine/spl.h>
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*/
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extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
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extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
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extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
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extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
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/* Read only */
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extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
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extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
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extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
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/* Various other callout lists that modules might want to know about */
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/* shutdown callout list definitions */
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typedef void (*bootlist_fn)(int,void *);
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int at_shutdown(bootlist_fn function, void *arg, int);
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int rm_at_shutdown(bootlist_fn function, void *arg);
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#define SHUTDOWN_PRE_SYNC 0
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#define SHUTDOWN_POST_SYNC 1
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/* forking */ /* XXX not yet */
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typedef void (*forklist_fn)(struct proc *parent,struct proc *child,int flags);
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int at_fork(forklist_fn function);
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int rm_at_fork(forklist_fn function);
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/* exiting */
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typedef void (*exitlist_fn)(struct proc *procp);
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int at_exit(exitlist_fn function);
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int rm_at_exit(exitlist_fn function);
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/* Not exactly a callout LIST, but a callout entry.. */
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/* Allow an external module to define a hardware watchdog tickler */
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/* Normally a process would do this, but there are times when the */
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/* kernel needs to be able to hold off the watchdog, when the process */
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/* is not active, e.g. when dumping core. Costs us a whole 4 bytes to */
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/* make this generic. the variable is in kern_shutdown.c */
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typedef void (*watchdog_tickle_fn)(void);
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extern watchdog_tickle_fn wdog_tickler;
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/*
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* Common `proc' functions are declared here so that proc.h can be included
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* less often.
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*/
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int tsleep __P((void *chan, int pri, char *wmesg, int timo));
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void wakeup __P((void *chan));
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#endif /* !_SYS_SYSTM_H_ */
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