Remove an unused argument and mark it WARNS6.
[dragonfly.git] / sys / sys / systm.h
CommitLineData
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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 $
4abcbc58 40 * $DragonFly: src/sys/sys/systm.h,v 1.42 2006/09/30 20:03:44 swildner 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
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69extern int selwait; /* select timeout address */
70
71extern u_char curpriority; /* priority of current process */
72
73extern int physmem; /* physical memory */
74
b13267a5 75extern cdev_t dumpdev; /* dump device */
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76extern long dumplo; /* offset into dumpdev */
77
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78extern cdev_t rootdev; /* root device */
79extern cdev_t rootdevs[2]; /* possible root devices */
984263bc 80extern char *rootdevnames[2]; /* names of possible root devices */
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81
82extern int boothowto; /* reboot flags, from console subsystem */
83extern int bootverbose; /* nonzero to print verbose messages */
84
85extern int maxusers; /* system tune hint */
86
17a9f566 87extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
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88extern int ncpus2; /* ncpus rounded down to power of 2 */
89extern int ncpus2_shift; /* log base 2 of ncpus2 */
90extern int ncpus2_mask; /* ncpus2 - 1 */
da3639ef 91extern int clocks_running; /* timing/timeout subsystem is operational */
17a9f566 92
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93#ifdef INVARIANTS /* The option is always available */
94#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
5ee2acaa 95#define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
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96#else
97#define KASSERT(exp,msg)
41c20dac 98#define KKASSERT(exp)
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99#endif
100
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101#define CTASSERT(x) _CTASSERT(x, __LINE__)
102#define _CTASSERT(x, y) __CTASSERT(x, y)
103#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
104
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105/*
106 * General function declarations.
107 */
108
88c4d2f6 109struct intrframe;
bf765287 110struct spinlock;
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111struct malloc_type;
112struct proc;
f1d1c3fa 113struct xwait;
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114struct timeval;
115struct tty;
116struct uio;
8ad65e08 117struct globaldata;
41c20dac 118struct thread;
984263bc 119
b153f746 120void Debugger (const char *msg);
801f17b9 121void backtrace(void);
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122void mi_gdinit (struct globaldata *gd, int cpu);
123int dumpstatus (vm_offset_t addr, off_t count);
124int nullop (void);
b13267a5 125int seltrue (cdev_t dev, int which);
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126int ureadc (int, struct uio *);
127void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
128void *phashinit (int count, struct malloc_type *type, u_long *nentries);
129
130void cpu_boot (int);
131void cpu_rootconf (void);
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132extern uint32_t crc32_tab[];
133uint32_t crc32(const void *buf, size_t size);
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134void init_param1 (void);
135void init_param2 (int physpages);
136void tablefull (const char *);
137int addlog (const char *, ...) __printflike(1, 2);
138int kvprintf (char const *, void (*)(int, void*), void *, int,
e2565a42 139 __va_list) __printflike(1, 0);
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140int log (int, const char *, ...) __printflike(2, 3);
141void logwakeup (void);
142void log_console (struct uio *);
143int printf (const char *, ...) __printflike(1, 2);
144int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
145int sprintf (char *buf, const char *, ...) __printflike(2, 3);
146int uprintf (const char *, ...) __printflike(1, 2);
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147int vprintf (const char *, __va_list) __printflike(1, 0);
148int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
149int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
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150int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
151int sscanf (const char *, char const *, ...);
e2565a42 152int vsscanf (const char *, char const *, __va_list);
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153long strtol (const char *, char **, int);
154u_long strtoul (const char *, char **, int);
155quad_t strtoq (const char *, char **, int);
156u_quad_t strtouq (const char *, char **, int);
984263bc 157
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158/*
159 * note: some functions commonly used by device drivers may be passed
160 * pointers to volatile storage, volatile set to avoid warnings.
161 */
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162void bcopy (volatile const void *from, volatile void *to, size_t len);
163void ovbcopy (const void *from, void *to, size_t len);
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164
165#ifdef __i386__
b153f746 166extern void (*bzero) (volatile void *buf, size_t len);
984263bc 167#else
b153f746 168void bzero (void *buf, size_t len);
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169#endif
170
b153f746 171void *memcpy (void *to, const void *from, size_t len);
984263bc 172
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173int copystr (const void *kfaddr, void *kdaddr, size_t len,
174 size_t *lencopied);
175int copyinstr (const void *udaddr, void *kaddr, size_t len,
176 size_t *lencopied);
177int copyin (const void *udaddr, void *kaddr, size_t len);
178int copyout (const void *kaddr, void *udaddr, size_t len);
984263bc 179
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180int fubyte (const void *base);
181int subyte (void *base, int byte);
182int suibyte (void *base, int byte);
183long fuword (const void *base);
184int suword (void *base, long word);
185int fusword (void *base);
186int susword (void *base, int word);
984263bc 187
b153f746 188void realitexpire (void *);
f0f0df1c 189void DELAY(int usec);
984263bc 190
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191void startprofclock (struct proc *);
192void stopprofclock (struct proc *);
193void setstatclockrate (int hzrate);
984263bc 194
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195char *kgetenv (const char *name);
196#define testenv kgetenv
6c6180e0 197#define freeenv(p)
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198int kgetenv_int (const char *name, int *data);
199int kgetenv_string (const char *name, char *data, int size);
200int kgetenv_quad (const char *name, quad_t *data);
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201extern char *kern_envp;
202
203#ifdef APM_FIXUP_CALLTODO
b153f746 204void adjust_timeout_calltodo (struct timeval *time_change);
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205#endif /* APM_FIXUP_CALLTODO */
206
207#include <sys/libkern.h>
208
209/* Initialize the world */
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210void consinit (void);
211void cpu_initclocks (void);
212void nchinit (void);
213void usrinfoinit (void);
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214
215/* Finalize the world. */
b153f746 216void shutdown_nice (int);
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217
218/*
219 * Kernel to clock driver interface.
220 */
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221void inittodr (time_t base);
222void resettodr (void);
223void startrtclock (void);
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224
225/* Timeouts */
b153f746 226typedef void timeout_t (void *); /* timeout function type */
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227#define CALLOUT_HANDLE_INITIALIZER(handle) \
228 { NULL }
229
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230#if 0
231/* OBSOLETE INTERFACE */
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232void callout_handle_init (struct callout_handle *);
233struct callout_handle timeout (timeout_t *, void *, int);
234void untimeout (timeout_t *, void *, struct callout_handle);
7eb3b2ae 235#endif
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236
237/* Interrupt management */
238
239/*
240 * For the alpha arch, some of these functions are static __inline, and
241 * the others should be.
242 */
243#ifdef __i386__
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244void setdelayed (void);
245void setsoftast (void);
246void setsoftcambio (void);
247void setsoftcamnet (void);
248void setsoftclock (void);
249void setsoftcrypto (void);
250void setsoftnet (void);
251void setsofttty (void);
252void setsoftvm (void);
253void setsofttq (void);
254void schedsoftcamnet (void);
255void schedsoftcambio (void);
256void schedsoftnet (void);
257void schedsofttty (void);
258void schedsoftvm (void);
259void schedsofttq (void);
260intrmask_t softclockpending (void);
b153f746 261void splz (void);
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262#endif /* __i386__ */
263
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264/*
265 * Various callout lists.
266 */
267
268/* Exit callout list declarations. */
b153f746 269typedef void (*exitlist_fn) (struct thread *td);
984263bc 270
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271int at_exit (exitlist_fn function);
272int rm_at_exit (exitlist_fn function);
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273
274/* Fork callout list declarations. */
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275typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
276 int flags);
984263bc 277
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278int at_fork (forklist_fn function);
279int rm_at_fork (forklist_fn function);
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280
281/*
282 * Not exactly a callout LIST, but a callout entry.
283 * Allow an external module to define a hardware watchdog tickler.
284 * Normally a process would do this, but there are times when the
285 * kernel needs to be able to hold off the watchdog, when the process
286 * is not active, e.g., when dumping core.
287 */
b153f746 288typedef void (*watchdog_tickle_fn) (void);
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289
290extern watchdog_tickle_fn wdog_tickler;
291
292/*
293 * Common `proc' functions are declared here so that proc.h can be included
294 * less often.
295 */
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296int tsleep (void *, int, const char *, int);
297int msleep (void *, struct spinlock *, int, const char *, int);
16523a43 298void tsleep_interlock (void *chan);
344ad853 299void tstop (struct proc *);
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300void wakeup (void *chan);
301void wakeup_one (void *chan);
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302void wakeup_mycpu (void *chan);
303void wakeup_mycpu_one (void *chan);
304void wakeup_oncpu (struct globaldata *gd, void *chan);
305void wakeup_oncpu_one (struct globaldata *gd, void *chan);
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306void wakeup_domain (void *chan, int domain);
307void wakeup_domain_one (void *chan, int domain);
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308
309/*
b13267a5 310 * Common `cdev_t' stuff are declared here to avoid #include poisoning
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311 */
312
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313int major(cdev_t x);
314int minor(cdev_t x);
315udev_t dev2udev(cdev_t x);
316cdev_t udev2dev(udev_t x, int b);
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317int uminor(udev_t dev);
318int umajor(udev_t dev);
319udev_t makeudev(int x, int y);
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320
321#endif /* _KERNEL */
984263bc 322#endif /* !_SYS_SYSTM_H_ */