176 lines
7.0 KiB
C
176 lines
7.0 KiB
C
/* $NetBSD: systm.h,v 1.31 1994/10/20 04:29:06 cgd Exp $ */
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/*-
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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 8.4 (Berkeley) 2/23/94
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*/
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/*
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* The `securelevel' variable controls the security level of the system.
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* It can only be decreased by process 1 (/sbin/init).
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*
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* Security levels are as follows:
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* -1 permannently insecure mode - always run system in level 0 mode.
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* 0 insecure mode - immutable and append-only flags make be turned off.
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* All devices may be read or written subject to permission modes.
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* 1 secure mode - immutable and append-only flags may not be changed;
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* raw disks of mounted filesystems, /dev/mem, and /dev/kmem are
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* read-only.
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* 2 highly secure mode - same as (1) plus raw disks are always
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* read-only whether mounted or not. This level precludes tampering
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* with filesystems by unmounting them, but also inhibits running
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* newfs while the system is secured.
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*
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* In normal operation, the system runs in level 0 mode while single user
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* and in level 1 mode while multiuser. If level 2 mode is desired while
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* running multiuser, it can be set in the multiuser startup script
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* (/etc/rc.local) using sysctl(1). If it is desired to run the system
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* in level 0 mode while multiuser, initialize the variable securelevel
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* in /sys/kern/kern_sysctl.c to -1. Note that it is NOT initialized to
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* zero as that would allow the vmunix binary to be patched to -1.
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* Without initialization, securelevel loads in the BSS area which only
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* comes into existence when the kernel is loaded and hence cannot be
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* patched by a stalking hacker.
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*/
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extern int securelevel; /* system security level */
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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 nswdev; /* number of swap devices */
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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 maxmem; /* max memory per 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 dev_t swapdev; /* swapping device */
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extern struct vnode *swapdev_vp;/* vnode equivalent to above */
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extern struct sysent { /* system call table */
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short sy_narg; /* number of args */
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short sy_argsize; /* total size of arguments */
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int (*sy_call)(); /* implementing function */
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} sysent[];
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extern int nsysent;
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#define SCARG(p,k) ((p)->k.datum) /* get arg from args pointer */
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extern int boothowto; /* reboot flags, from console subsystem */
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/* casts to keep lint happy */
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#define insque(q,p) _insque((caddr_t)q,(caddr_t)p)
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#define remque(q) _remque((caddr_t)q)
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/*
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* General function declarations.
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*/
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int nullop __P((void));
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int enodev __P((void));
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int enoioctl __P((void));
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int enxio __P((void));
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int eopnotsupp __P((void));
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int seltrue __P((dev_t dev, int which, struct proc *p));
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void *hashinit __P((int count, int type, u_long *hashmask));
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int nosys __P((struct proc *, void *, register_t *));
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#ifdef __GNUC__
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volatile void panic __P((const char *, ...));
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#else
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void panic __P((const char *, ...));
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#endif
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void tablefull __P((const char *));
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void printf __P((const char *, ...));
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int sprintf __P((char *buf, const char *, ...));
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void ttyprintf __P((struct tty *, const char *, ...));
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void bcopy __P((const void *from, void *to, u_int len));
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void ovbcopy __P((const void *from, void *to, u_int len));
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void bzero __P((void *buf, u_int len));
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int copystr __P((void *kfaddr, void *kdaddr, u_int len, u_int *done));
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int copyinstr __P((void *udaddr, void *kaddr, u_int len, u_int *done));
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int copyoutstr __P((void *kaddr, void *udaddr, u_int len, u_int *done));
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int copyin __P((void *udaddr, void *kaddr, u_int len));
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int copyout __P((void *kaddr, void *udaddr, u_int len));
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int fubyte __P((void *base));
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#ifdef notdef
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int fuibyte __P((void *base));
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#endif
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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((void *base));
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int fuiword __P((void *base));
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int suword __P((void *base, int word));
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int suiword __P((void *base, int word));
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int hzto __P((struct timeval *tv));
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void timeout __P((void (*func)(void *), void *arg, int ticks));
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void untimeout __P((void (*func)(void *), void *arg));
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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 initclocks __P((void));
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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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#include <lib/libkern/libkern.h>
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#ifdef DDB
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/* debugger entry points */
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int Debugger __P((void)); /* in DDB only */
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int read_symtab_from_file __P((struct proc *,struct vnode *,const char *));
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#endif
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