Add the "wordexp" shell built-in command.
[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 $
1184892f 40 * $DragonFly: src/sys/sys/systm.h,v 1.58 2007/01/05 22:16:32 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
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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
97ee3efc 93/* XXX TGEN these don't belong here, they're MD on i386/amd64 */
527fddf7 94extern u_int cpu_feature; /* CPUID_* features */
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95extern u_int cpu_feature2; /* CPUID2_* features */
96
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97extern int nfs_diskless_valid; /* NFS diskless params were obtained */
98extern vm_paddr_t Maxmem; /* Highest physical memory address in system */
527fddf7 99
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100#ifdef INVARIANTS /* The option is always available */
101#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
5ee2acaa 102#define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
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103#else
104#define KASSERT(exp,msg)
41c20dac 105#define KKASSERT(exp)
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106#endif
107
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108#define CTASSERT(x) _CTASSERT(x, __LINE__)
109#define _CTASSERT(x, y) __CTASSERT(x, y)
110#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
111
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112/*
113 * General function declarations.
114 */
115
88c4d2f6 116struct intrframe;
bf765287 117struct spinlock;
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118struct malloc_type;
119struct proc;
f1d1c3fa 120struct xwait;
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121struct timeval;
122struct tty;
123struct uio;
8ad65e08 124struct globaldata;
41c20dac 125struct thread;
4a22e893 126struct trapframe;
6bf59cd2 127struct user;
984263bc 128
b153f746 129void Debugger (const char *msg);
801f17b9 130void backtrace(void);
b153f746 131void mi_gdinit (struct globaldata *gd, int cpu);
6bf59cd2 132void mi_proc0init(struct globaldata *gd, struct user *proc0paddr);
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133int dumpstatus (vm_offset_t addr, off_t count);
134int nullop (void);
b13267a5 135int seltrue (cdev_t dev, int which);
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136int ureadc (int, struct uio *);
137void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
138void *phashinit (int count, struct malloc_type *type, u_long *nentries);
139
4a22e893 140int cpu_sanitize_frame (struct trapframe *);
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141void cpu_halt (void);
142void cpu_reset (void);
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143void cpu_boot (int);
144void cpu_rootconf (void);
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145
146vm_paddr_t kvtop(void *addr);
147int is_physical_memory (vm_offset_t addr);
148
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149extern uint32_t crc32_tab[];
150uint32_t crc32(const void *buf, size_t size);
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151void init_param1 (void);
152void init_param2 (int physpages);
153void tablefull (const char *);
379210cb 154int kvcprintf (char const *, void (*)(int, void*), void *, int,
e2565a42 155 __va_list) __printflike(1, 0);
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156int log (int, const char *, ...) __printflike(2, 3);
157void logwakeup (void);
158void log_console (struct uio *);
169276ba 159int kprintf (const char *, ...) __printflike(1, 2);
169276ba 160int ksnprintf (char *, size_t, const char *, ...) __printflike(3, 4);
169276ba 161int ksprintf (char *buf, const char *, ...) __printflike(2, 3);
b153f746 162int uprintf (const char *, ...) __printflike(1, 2);
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163int kvprintf (const char *, __va_list) __printflike(1, 0);
164int kvsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
165int kvsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
b153f746 166int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
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167int ksscanf (const char *, char const *, ...);
168int kvsscanf (const char *, char const *, __va_list);
44a09dd6 169
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170long strtol (const char *, char **, int);
171u_long strtoul (const char *, char **, int);
172quad_t strtoq (const char *, char **, int);
173u_quad_t strtouq (const char *, char **, int);
984263bc 174
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175/*
176 * note: some functions commonly used by device drivers may be passed
177 * pointers to volatile storage, volatile set to avoid warnings.
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178 *
179 * NOTE: bcopyb() - is a dumb byte-granular bcopy. This routine is
180 * explicitly not meant to be sophisticated.
181 * NOTE: bcopyi() - is a dumb int-granular bcopy (len is still in bytes).
182 * This routine is explicitly not meant to be sophisticated.
f15db79e 183 */
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184void bcopyb (const void *from, void *to, size_t len);
185void bcopyi (const void *from, void *to, size_t len);
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186void bcopy (volatile const void *from, volatile void *to, size_t len);
187void ovbcopy (const void *from, void *to, size_t len);
afaa1d56 188void bzero (volatile void *buf, size_t len);
b153f746 189void *memcpy (void *to, const void *from, size_t len);
984263bc 190
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191int copystr (const void *kfaddr, void *kdaddr, size_t len,
192 size_t *lencopied);
193int copyinstr (const void *udaddr, void *kaddr, size_t len,
194 size_t *lencopied);
195int copyin (const void *udaddr, void *kaddr, size_t len);
196int copyout (const void *kaddr, void *udaddr, size_t len);
984263bc 197
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198int fubyte (const void *base);
199int subyte (void *base, int byte);
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200long fuword (const void *base);
201int suword (void *base, long word);
202int fusword (void *base);
203int susword (void *base, int word);
984263bc 204
b153f746 205void realitexpire (void *);
f0f0df1c 206void DELAY(int usec);
984263bc 207
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208void startprofclock (struct proc *);
209void stopprofclock (struct proc *);
210void setstatclockrate (int hzrate);
984263bc 211
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212/*
213 * Console I/O spinlocks - these typically also hard-disable interrupts
214 * for the duration.
215 */
216void cons_lock(void);
217void cons_unlock(void);
218
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219char *kgetenv (const char *name);
220#define testenv kgetenv
6c6180e0 221#define freeenv(p)
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222int kgetenv_int (const char *name, int *data);
223int kgetenv_string (const char *name, char *data, int size);
224int kgetenv_quad (const char *name, quad_t *data);
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225extern char *kern_envp;
226
227#ifdef APM_FIXUP_CALLTODO
b153f746 228void adjust_timeout_calltodo (struct timeval *time_change);
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229#endif /* APM_FIXUP_CALLTODO */
230
231#include <sys/libkern.h>
232
233/* Initialize the world */
a8a86718 234void mi_startup (void);
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235void consinit (void);
236void cpu_initclocks (void);
237void nchinit (void);
238void usrinfoinit (void);
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239
240/* Finalize the world. */
b153f746 241void shutdown_nice (int);
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242
243/*
244 * Kernel to clock driver interface.
245 */
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246void inittodr (time_t base);
247void resettodr (void);
248void startrtclock (void);
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249
250/* Timeouts */
b153f746 251typedef void timeout_t (void *); /* timeout function type */
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252#define CALLOUT_HANDLE_INITIALIZER(handle) \
253 { NULL }
254
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255#if 0
256/* OBSOLETE INTERFACE */
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257void callout_handle_init (struct callout_handle *);
258struct callout_handle timeout (timeout_t *, void *, int);
259void untimeout (timeout_t *, void *, struct callout_handle);
7eb3b2ae 260#endif
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261
262/* Interrupt management */
263
264/*
265 * For the alpha arch, some of these functions are static __inline, and
266 * the others should be.
267 */
268#ifdef __i386__
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269void setdelayed (void);
270void setsoftast (void);
271void setsoftcambio (void);
272void setsoftcamnet (void);
273void setsoftclock (void);
274void setsoftcrypto (void);
275void setsoftnet (void);
276void setsofttty (void);
277void setsoftvm (void);
278void setsofttq (void);
279void schedsoftcamnet (void);
280void schedsoftcambio (void);
281void schedsoftnet (void);
282void schedsofttty (void);
283void schedsoftvm (void);
284void schedsofttq (void);
285intrmask_t softclockpending (void);
b153f746 286void splz (void);
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287#endif /* __i386__ */
288
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289/*
290 * Various callout lists.
291 */
292
293/* Exit callout list declarations. */
b153f746 294typedef void (*exitlist_fn) (struct thread *td);
984263bc 295
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296int at_exit (exitlist_fn function);
297int rm_at_exit (exitlist_fn function);
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298
299/* Fork callout list declarations. */
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300typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
301 int flags);
984263bc 302
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303int at_fork (forklist_fn function);
304int rm_at_fork (forklist_fn function);
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305
306/*
307 * Not exactly a callout LIST, but a callout entry.
308 * Allow an external module to define a hardware watchdog tickler.
309 * Normally a process would do this, but there are times when the
310 * kernel needs to be able to hold off the watchdog, when the process
311 * is not active, e.g., when dumping core.
312 */
b153f746 313typedef void (*watchdog_tickle_fn) (void);
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314
315extern watchdog_tickle_fn wdog_tickler;
316
317/*
318 * Common `proc' functions are declared here so that proc.h can be included
319 * less often.
320 */
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321int tsleep (void *, int, const char *, int);
322int msleep (void *, struct spinlock *, int, const char *, int);
16523a43 323void tsleep_interlock (void *chan);
344ad853 324void tstop (struct proc *);
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325void wakeup (void *chan);
326void wakeup_one (void *chan);
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327void wakeup_mycpu (void *chan);
328void wakeup_mycpu_one (void *chan);
329void wakeup_oncpu (struct globaldata *gd, void *chan);
330void wakeup_oncpu_one (struct globaldata *gd, void *chan);
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331void wakeup_domain (void *chan, int domain);
332void wakeup_domain_one (void *chan, int domain);
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333
334/*
b13267a5 335 * Common `cdev_t' stuff are declared here to avoid #include poisoning
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336 */
337
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338int major(cdev_t x);
339int minor(cdev_t x);
340udev_t dev2udev(cdev_t x);
341cdev_t udev2dev(udev_t x, int b);
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342int uminor(udev_t dev);
343int umajor(udev_t dev);
344udev_t makeudev(int x, int y);
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345
346#endif /* _KERNEL */
984263bc 347#endif /* !_SYS_SYSTM_H_ */