Silence warnings regarding yyunput being defined and never used.
[dragonfly.git] / sys / sys / systm.h
... / ...
CommitLineData
1/*-
2 * Copyright (c) 1982, 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)systm.h 8.7 (Berkeley) 3/29/95
39 * $FreeBSD: src/sys/sys/systm.h,v 1.111.2.18 2002/12/17 18:04:02 sam Exp $
40 * $DragonFly: src/sys/sys/systm.h,v 1.40 2006/09/03 17:43:59 dillon Exp $
41 */
42
43#ifndef _SYS_SYSTM_H_
44#define _SYS_SYSTM_H_
45
46#ifndef _KERNEL
47#error "This file should not be included by userland programs."
48#else
49
50#ifndef _MACHINE_TYPES_H_
51#include <machine/types.h>
52#endif
53#ifndef _MACHINE_STDARG_H_
54#include <machine/stdarg.h>
55#endif
56#include <machine/atomic.h>
57#include <machine/cpufunc.h>
58#include <sys/callout.h>
59
60extern int securelevel; /* system security level (see init(8)) */
61
62extern int cold; /* nonzero if we are doing a cold boot */
63extern const char *panicstr; /* panic message */
64extern int dumping; /* system is dumping */
65extern int safepri; /* safe ipl when cold or panicing */
66extern char version[]; /* system version */
67extern char copyright[]; /* system copyright */
68
69extern int nswap; /* size of swap space */
70
71extern int selwait; /* select timeout address */
72
73extern u_char curpriority; /* priority of current process */
74
75extern int physmem; /* physical memory */
76
77extern dev_t dumpdev; /* dump device */
78extern long dumplo; /* offset into dumpdev */
79
80extern dev_t rootdev; /* root device */
81extern dev_t rootdevs[2]; /* possible root devices */
82extern char *rootdevnames[2]; /* names of possible root devices */
83
84extern int boothowto; /* reboot flags, from console subsystem */
85extern int bootverbose; /* nonzero to print verbose messages */
86
87extern int maxusers; /* system tune hint */
88
89extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
90extern int ncpus2; /* ncpus rounded down to power of 2 */
91extern int ncpus2_shift; /* log base 2 of ncpus2 */
92extern int ncpus2_mask; /* ncpus2 - 1 */
93extern int clocks_running; /* timing/timeout subsystem is operational */
94
95#ifdef INVARIANTS /* The option is always available */
96#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
97#define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
98#else
99#define KASSERT(exp,msg)
100#define KKASSERT(exp)
101#endif
102
103#define CTASSERT(x) _CTASSERT(x, __LINE__)
104#define _CTASSERT(x, y) __CTASSERT(x, y)
105#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
106
107/*
108 * General function declarations.
109 */
110
111struct intrframe;
112struct spinlock;
113struct malloc_type;
114struct proc;
115struct xwait;
116struct timeval;
117struct tty;
118struct uio;
119struct globaldata;
120struct thread;
121
122void Debugger (const char *msg);
123void backtrace(void);
124void mi_gdinit (struct globaldata *gd, int cpu);
125int dumpstatus (vm_offset_t addr, off_t count);
126int nullop (void);
127int seltrue (dev_t dev, int which);
128int ureadc (int, struct uio *);
129void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
130void *phashinit (int count, struct malloc_type *type, u_long *nentries);
131
132void cpu_boot (int);
133void cpu_rootconf (void);
134extern uint32_t crc32_tab[];
135uint32_t crc32(const void *buf, size_t size);
136void init_param1 (void);
137void init_param2 (int physpages);
138void tablefull (const char *);
139int addlog (const char *, ...) __printflike(1, 2);
140int kvprintf (char const *, void (*)(int, void*), void *, int,
141 __va_list) __printflike(1, 0);
142int log (int, const char *, ...) __printflike(2, 3);
143void logwakeup (void);
144void log_console (struct uio *);
145int printf (const char *, ...) __printflike(1, 2);
146int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
147int sprintf (char *buf, const char *, ...) __printflike(2, 3);
148int uprintf (const char *, ...) __printflike(1, 2);
149int vprintf (const char *, __va_list) __printflike(1, 0);
150int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
151int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
152int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
153int sscanf (const char *, char const *, ...);
154int vsscanf (const char *, char const *, __va_list);
155long strtol (const char *, char **, int);
156u_long strtoul (const char *, char **, int);
157quad_t strtoq (const char *, char **, int);
158u_quad_t strtouq (const char *, char **, int);
159
160/*
161 * note: some functions commonly used by device drivers may be passed
162 * pointers to volatile storage, volatile set to avoid warnings.
163 */
164void bcopy (volatile const void *from, volatile void *to, size_t len);
165void ovbcopy (const void *from, void *to, size_t len);
166
167#ifdef __i386__
168extern void (*bzero) (volatile void *buf, size_t len);
169#else
170void bzero (void *buf, size_t len);
171#endif
172
173void *memcpy (void *to, const void *from, size_t len);
174
175int copystr (const void *kfaddr, void *kdaddr, size_t len,
176 size_t *lencopied);
177int copyinstr (const void *udaddr, void *kaddr, size_t len,
178 size_t *lencopied);
179int copyin (const void *udaddr, void *kaddr, size_t len);
180int copyout (const void *kaddr, void *udaddr, size_t len);
181
182int fubyte (const void *base);
183int subyte (void *base, int byte);
184int suibyte (void *base, int byte);
185long fuword (const void *base);
186int suword (void *base, long word);
187int fusword (void *base);
188int susword (void *base, int word);
189
190void realitexpire (void *);
191void DELAY(int usec);
192
193void startprofclock (struct proc *);
194void stopprofclock (struct proc *);
195void setstatclockrate (int hzrate);
196
197char *kgetenv (const char *name);
198#define testenv kgetenv
199#define freeenv(p)
200int kgetenv_int (const char *name, int *data);
201int kgetenv_string (const char *name, char *data, int size);
202int kgetenv_quad (const char *name, quad_t *data);
203extern char *kern_envp;
204
205#ifdef APM_FIXUP_CALLTODO
206void adjust_timeout_calltodo (struct timeval *time_change);
207#endif /* APM_FIXUP_CALLTODO */
208
209#include <sys/libkern.h>
210
211/* Initialize the world */
212void consinit (void);
213void cpu_initclocks (void);
214void nchinit (void);
215void usrinfoinit (void);
216
217/* Finalize the world. */
218void shutdown_nice (int);
219
220/*
221 * Kernel to clock driver interface.
222 */
223void inittodr (time_t base);
224void resettodr (void);
225void startrtclock (void);
226
227/* Timeouts */
228typedef void timeout_t (void *); /* timeout function type */
229#define CALLOUT_HANDLE_INITIALIZER(handle) \
230 { NULL }
231
232#if 0
233/* OBSOLETE INTERFACE */
234void callout_handle_init (struct callout_handle *);
235struct callout_handle timeout (timeout_t *, void *, int);
236void untimeout (timeout_t *, void *, struct callout_handle);
237#endif
238
239/* Interrupt management */
240
241/*
242 * For the alpha arch, some of these functions are static __inline, and
243 * the others should be.
244 */
245#ifdef __i386__
246void setdelayed (void);
247void setsoftast (void);
248void setsoftcambio (void);
249void setsoftcamnet (void);
250void setsoftclock (void);
251void setsoftcrypto (void);
252void setsoftnet (void);
253void setsofttty (void);
254void setsoftvm (void);
255void setsofttq (void);
256void schedsoftcamnet (void);
257void schedsoftcambio (void);
258void schedsoftnet (void);
259void schedsofttty (void);
260void schedsoftvm (void);
261void schedsofttq (void);
262intrmask_t softclockpending (void);
263void splz (void);
264#endif /* __i386__ */
265
266/*
267 * Various callout lists.
268 */
269
270/* Exit callout list declarations. */
271typedef void (*exitlist_fn) (struct thread *td);
272
273int at_exit (exitlist_fn function);
274int rm_at_exit (exitlist_fn function);
275
276/* Fork callout list declarations. */
277typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
278 int flags);
279
280int at_fork (forklist_fn function);
281int rm_at_fork (forklist_fn function);
282
283/*
284 * Not exactly a callout LIST, but a callout entry.
285 * Allow an external module to define a hardware watchdog tickler.
286 * Normally a process would do this, but there are times when the
287 * kernel needs to be able to hold off the watchdog, when the process
288 * is not active, e.g., when dumping core.
289 */
290typedef void (*watchdog_tickle_fn) (void);
291
292extern watchdog_tickle_fn wdog_tickler;
293
294/*
295 * Common `proc' functions are declared here so that proc.h can be included
296 * less often.
297 */
298int tsleep (void *, int, const char *, int);
299int msleep (void *, struct spinlock *, int, const char *, int);
300void tsleep_interlock (void *chan);
301void tstop (struct proc *);
302void wakeup (void *chan);
303void wakeup_one (void *chan);
304void wakeup_mycpu (void *chan);
305void wakeup_mycpu_one (void *chan);
306void wakeup_oncpu (struct globaldata *gd, void *chan);
307void wakeup_oncpu_one (struct globaldata *gd, void *chan);
308void wakeup_domain (void *chan, int domain);
309void wakeup_domain_one (void *chan, int domain);
310
311/*
312 * Common `dev_t' stuff are declared here to avoid #include poisoning
313 */
314
315int major(dev_t x);
316int minor(dev_t x);
317udev_t dev2udev(dev_t x);
318dev_t udev2dev(udev_t x, int b);
319int uminor(udev_t dev);
320int umajor(udev_t dev);
321udev_t makeudev(int x, int y);
322
323#endif /* _KERNEL */
324#endif /* !_SYS_SYSTM_H_ */