Fix a minor bug that prevented compilation.
[dragonfly.git] / sys / sys / systm.h
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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 $
bf765287 40 * $DragonFly: src/sys/sys/systm.h,v 1.38 2006/05/27 01:51:27 dillon Exp $
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41 */
42
43#ifndef _SYS_SYSTM_H_
44#define _SYS_SYSTM_H_
45
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46#ifndef _KERNEL
47#error "This file should not be included by userland programs."
03d6a592 48#else
d9f3f6fa 49
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50#ifndef _MACHINE_TYPES_H_
51#include <machine/types.h>
52#endif
53#ifndef _MACHINE_STDARG_H_
54#include <machine/stdarg.h>
55#endif
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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 */
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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
17a9f566 89extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
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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 */
da3639ef 93extern int clocks_running; /* timing/timeout subsystem is operational */
17a9f566 94
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95#ifdef INVARIANTS /* The option is always available */
96#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
5ee2acaa 97#define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
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98#else
99#define KASSERT(exp,msg)
41c20dac 100#define KKASSERT(exp)
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101#endif
102
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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
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107/*
108 * General function declarations.
109 */
110
88c4d2f6 111struct intrframe;
bf765287 112struct spinlock;
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113struct malloc_type;
114struct proc;
f1d1c3fa 115struct xwait;
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116struct timeval;
117struct tty;
118struct uio;
8ad65e08 119struct globaldata;
41c20dac 120struct thread;
984263bc 121
b153f746 122void Debugger (const char *msg);
801f17b9 123void backtrace(void);
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124void mi_gdinit (struct globaldata *gd, int cpu);
125int dumpstatus (vm_offset_t addr, off_t count);
126int nullop (void);
127int eopnotsupp (void);
128int einval (void);
129int seltrue (dev_t dev, int which, struct thread *td);
130int ureadc (int, struct uio *);
131void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
132void *phashinit (int count, struct malloc_type *type, u_long *nentries);
133
134void cpu_boot (int);
135void cpu_rootconf (void);
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136extern uint32_t crc32_tab[];
137uint32_t crc32(const void *buf, size_t size);
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138void init_param1 (void);
139void init_param2 (int physpages);
140void tablefull (const char *);
141int addlog (const char *, ...) __printflike(1, 2);
142int kvprintf (char const *, void (*)(int, void*), void *, int,
e2565a42 143 __va_list) __printflike(1, 0);
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144int log (int, const char *, ...) __printflike(2, 3);
145void logwakeup (void);
146void log_console (struct uio *);
147int printf (const char *, ...) __printflike(1, 2);
148int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
149int sprintf (char *buf, const char *, ...) __printflike(2, 3);
150int uprintf (const char *, ...) __printflike(1, 2);
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151int vprintf (const char *, __va_list) __printflike(1, 0);
152int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
153int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
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154int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
155int sscanf (const char *, char const *, ...);
e2565a42 156int vsscanf (const char *, char const *, __va_list);
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157long strtol (const char *, char **, int);
158u_long strtoul (const char *, char **, int);
159quad_t strtoq (const char *, char **, int);
160u_quad_t strtouq (const char *, char **, int);
984263bc 161
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162/*
163 * note: some functions commonly used by device drivers may be passed
164 * pointers to volatile storage, volatile set to avoid warnings.
165 */
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166void bcopy (volatile const void *from, volatile void *to, size_t len);
167void ovbcopy (const void *from, void *to, size_t len);
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168
169#ifdef __i386__
b153f746 170extern void (*bzero) (volatile void *buf, size_t len);
984263bc 171#else
b153f746 172void bzero (void *buf, size_t len);
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173#endif
174
b153f746 175void *memcpy (void *to, const void *from, size_t len);
984263bc 176
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177int copystr (const void *kfaddr, void *kdaddr, size_t len,
178 size_t *lencopied);
179int copyinstr (const void *udaddr, void *kaddr, size_t len,
180 size_t *lencopied);
181int copyin (const void *udaddr, void *kaddr, size_t len);
182int copyout (const void *kaddr, void *udaddr, size_t len);
984263bc 183
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184int fubyte (const void *base);
185int subyte (void *base, int byte);
186int suibyte (void *base, int byte);
187long fuword (const void *base);
188int suword (void *base, long word);
189int fusword (void *base);
190int susword (void *base, int word);
984263bc 191
b153f746 192void realitexpire (void *);
f0f0df1c 193void DELAY(int usec);
984263bc 194
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195void startprofclock (struct proc *);
196void stopprofclock (struct proc *);
197void setstatclockrate (int hzrate);
984263bc 198
b153f746 199char *getenv (const char *name);
984263bc 200#define testenv getenv
6c6180e0 201#define freeenv(p)
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202int getenv_int (const char *name, int *data);
203int getenv_string (const char *name, char *data, int size);
204int getenv_quad (const char *name, quad_t *data);
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205extern char *kern_envp;
206
207#ifdef APM_FIXUP_CALLTODO
b153f746 208void adjust_timeout_calltodo (struct timeval *time_change);
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209#endif /* APM_FIXUP_CALLTODO */
210
211#include <sys/libkern.h>
212
213/* Initialize the world */
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214void consinit (void);
215void cpu_initclocks (void);
216void nchinit (void);
217void usrinfoinit (void);
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218
219/* Finalize the world. */
b153f746 220void shutdown_nice (int);
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221
222/*
223 * Kernel to clock driver interface.
224 */
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225void inittodr (time_t base);
226void resettodr (void);
227void startrtclock (void);
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228
229/* Timeouts */
b153f746 230typedef void timeout_t (void *); /* timeout function type */
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231#define CALLOUT_HANDLE_INITIALIZER(handle) \
232 { NULL }
233
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234#if 0
235/* OBSOLETE INTERFACE */
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236void callout_handle_init (struct callout_handle *);
237struct callout_handle timeout (timeout_t *, void *, int);
238void untimeout (timeout_t *, void *, struct callout_handle);
7eb3b2ae 239#endif
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240
241/* Interrupt management */
242
243/*
244 * For the alpha arch, some of these functions are static __inline, and
245 * the others should be.
246 */
247#ifdef __i386__
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248void setdelayed (void);
249void setsoftast (void);
250void setsoftcambio (void);
251void setsoftcamnet (void);
252void setsoftclock (void);
253void setsoftcrypto (void);
254void setsoftnet (void);
255void setsofttty (void);
256void setsoftvm (void);
257void setsofttq (void);
258void schedsoftcamnet (void);
259void schedsoftcambio (void);
260void schedsoftnet (void);
261void schedsofttty (void);
262void schedsoftvm (void);
263void schedsofttq (void);
264intrmask_t softclockpending (void);
b153f746 265void splz (void);
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266#endif /* __i386__ */
267
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268/*
269 * Various callout lists.
270 */
271
272/* Exit callout list declarations. */
b153f746 273typedef void (*exitlist_fn) (struct thread *td);
984263bc 274
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275int at_exit (exitlist_fn function);
276int rm_at_exit (exitlist_fn function);
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277
278/* Fork callout list declarations. */
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279typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
280 int flags);
984263bc 281
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282int at_fork (forklist_fn function);
283int rm_at_fork (forklist_fn function);
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284
285/*
286 * Not exactly a callout LIST, but a callout entry.
287 * Allow an external module to define a hardware watchdog tickler.
288 * Normally a process would do this, but there are times when the
289 * kernel needs to be able to hold off the watchdog, when the process
290 * is not active, e.g., when dumping core.
291 */
b153f746 292typedef void (*watchdog_tickle_fn) (void);
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293
294extern watchdog_tickle_fn wdog_tickler;
295
296/*
297 * Common `proc' functions are declared here so that proc.h can be included
298 * less often.
299 */
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300int tsleep (void *, int, const char *, int);
301int msleep (void *, struct spinlock *, int, const char *, int);
16523a43 302void tsleep_interlock (void *chan);
344ad853 303void tstop (struct proc *);
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304void wakeup (void *chan);
305void wakeup_one (void *chan);
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306void wakeup_mycpu (void *chan);
307void wakeup_mycpu_one (void *chan);
308void wakeup_oncpu (struct globaldata *gd, void *chan);
309void wakeup_oncpu_one (struct globaldata *gd, void *chan);
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310void wakeup_domain (void *chan, int domain);
311void wakeup_domain_one (void *chan, int domain);
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312
313/*
314 * Common `dev_t' stuff are declared here to avoid #include poisoning
315 */
316
317int major(dev_t x);
318int minor(dev_t x);
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319udev_t dev2udev(dev_t x);
320dev_t udev2dev(udev_t x, int b);
321int uminor(udev_t dev);
322int umajor(udev_t dev);
323udev_t makeudev(int x, int y);
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324
325#endif /* _KERNEL */
984263bc 326#endif /* !_SYS_SYSTM_H_ */