proc->thread stage 4: rework the VFS and DEVICE subsystems to take thread
[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 $
dadab5e9 40 * $DragonFly: src/sys/sys/systm.h,v 1.6 2003/06/25 03:56:10 dillon Exp $
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41 */
42
43#ifndef _SYS_SYSTM_H_
44#define _SYS_SYSTM_H_
45
46#include <machine/atomic.h>
47#include <machine/cpufunc.h>
48#include <sys/callout.h>
49
50extern int securelevel; /* system security level (see init(8)) */
51
52extern int cold; /* nonzero if we are doing a cold boot */
53extern const char *panicstr; /* panic message */
54extern int dumping; /* system is dumping */
55extern int safepri; /* safe ipl when cold or panicing */
56extern char version[]; /* system version */
57extern char copyright[]; /* system copyright */
58
59extern int nswap; /* size of swap space */
60
61extern int selwait; /* select timeout address */
62
63extern u_char curpriority; /* priority of current process */
64
65extern int physmem; /* physical memory */
66
67extern dev_t dumpdev; /* dump device */
68extern long dumplo; /* offset into dumpdev */
69
70extern dev_t rootdev; /* root device */
71extern dev_t rootdevs[2]; /* possible root devices */
72extern char *rootdevnames[2]; /* names of possible root devices */
73extern struct vnode *rootvp; /* vnode equivalent to above */
74
75extern int boothowto; /* reboot flags, from console subsystem */
76extern int bootverbose; /* nonzero to print verbose messages */
77
78extern int maxusers; /* system tune hint */
79
80#ifdef INVARIANTS /* The option is always available */
81#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
41c20dac 82#define KKASSERT(exp) if (!(exp)) panic("assertion: " #exp " in " __FUNCTION__)
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83#define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
84#define CONDSPLASSERT(cond, level, msg) do { \
85 if (cond) \
86 SPLASSERT(level, msg); \
87} while (0)
88#else
89#define KASSERT(exp,msg)
41c20dac 90#define KKASSERT(exp)
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91#define SPLASSERT(level, msg)
92#define CONDSPLASSERT(cond, level, msg)
93#endif
94
95/*
96 * General function declarations.
97 */
98
99struct clockframe;
100struct malloc_type;
101struct proc;
f1d1c3fa 102struct xwait;
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103struct timeval;
104struct tty;
105struct uio;
8ad65e08 106struct globaldata;
41c20dac 107struct thread;
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108
109void Debugger __P((const char *msg));
8ad65e08 110void mi_gdinit __P((struct globaldata *gd, int cpu));
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111int dumpstatus __P((vm_offset_t addr, off_t count));
112int nullop __P((void));
113int eopnotsupp __P((void));
114int einval __P((void));
41c20dac 115int seltrue __P((dev_t dev, int which, struct thread *td));
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116int ureadc __P((int, struct uio *));
117void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask));
118void *phashinit __P((int count, struct malloc_type *type, u_long *nentries));
119
120void cpu_boot __P((int));
121void cpu_rootconf __P((void));
122extern uint32_t crc32_tab[];
123uint32_t crc32(const void *buf, size_t size);
124void init_param1 __P((void));
125void init_param2 __P((int physpages));
126void tablefull __P((const char *));
127int addlog __P((const char *, ...)) __printflike(1, 2);
128int kvprintf __P((char const *, void (*)(int, void*), void *, int,
129 _BSD_VA_LIST_)) __printflike(1, 0);
130int log __P((int, const char *, ...)) __printflike(2, 3);
131void logwakeup __P((void));
132void log_console __P((struct uio *));
133int printf __P((const char *, ...)) __printflike(1, 2);
134int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
135int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3);
136int uprintf __P((const char *, ...)) __printflike(1, 2);
137int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0);
138int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0);
139int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0);
140int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3);
141int sscanf __P((const char *, char const *, ...));
142int vsscanf __P((const char *, char const *, _BSD_VA_LIST_));
143long strtol __P((const char *, char **, int));
144u_long strtoul __P((const char *, char **, int));
145quad_t strtoq __P((const char *, char **, int));
146u_quad_t strtouq __P((const char *, char **, int));
147
148void bcopy __P((const void *from, void *to, size_t len));
149void ovbcopy __P((const void *from, void *to, size_t len));
150
151#ifdef __i386__
152extern void (*bzero) __P((void *buf, size_t len));
153#else
154void bzero __P((void *buf, size_t len));
155#endif
156
157void *memcpy __P((void *to, const void *from, size_t len));
158
159int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
160 size_t *lencopied));
161int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
162 size_t *lencopied));
163int copyin __P((const void *udaddr, void *kaddr, size_t len));
164int copyout __P((const void *kaddr, void *udaddr, size_t len));
165
166int fubyte __P((const void *base));
167int subyte __P((void *base, int byte));
168int suibyte __P((void *base, int byte));
169long fuword __P((const void *base));
170int suword __P((void *base, long word));
171int fusword __P((void *base));
172int susword __P((void *base, int word));
173
174void realitexpire __P((void *));
175
176void hardclock __P((struct clockframe *frame));
177void softclock __P((void));
178void statclock __P((struct clockframe *frame));
179
180void startprofclock __P((struct proc *));
181void stopprofclock __P((struct proc *));
182void setstatclockrate __P((int hzrate));
183
184char *getenv __P((const char *name));
185#define testenv getenv
186#define freeenv
187int getenv_int __P((const char *name, int *data));
188int getenv_string __P((const char *name, char *data, int size));
189int getenv_quad __P((const char *name, quad_t *data));
190extern char *kern_envp;
191
192#ifdef APM_FIXUP_CALLTODO
193void adjust_timeout_calltodo __P((struct timeval *time_change));
194#endif /* APM_FIXUP_CALLTODO */
195
196#include <sys/libkern.h>
197
198/* Initialize the world */
199void consinit __P((void));
200void cpu_initclocks __P((void));
201void nchinit __P((void));
202void usrinfoinit __P((void));
203void vntblinit __P((void));
204
205/* Finalize the world. */
206void shutdown_nice __P((int));
207
208/*
209 * Kernel to clock driver interface.
210 */
211void inittodr __P((time_t base));
212void resettodr __P((void));
213void startrtclock __P((void));
214
215/* Timeouts */
216typedef void timeout_t __P((void *)); /* timeout function type */
217#define CALLOUT_HANDLE_INITIALIZER(handle) \
218 { NULL }
219
220void callout_handle_init __P((struct callout_handle *));
221struct callout_handle timeout __P((timeout_t *, void *, int));
222void untimeout __P((timeout_t *, void *, struct callout_handle));
223
224/* Interrupt management */
225
226/*
227 * For the alpha arch, some of these functions are static __inline, and
228 * the others should be.
229 */
230#ifdef __i386__
231void setdelayed __P((void));
232void setsoftast __P((void));
233void setsoftcambio __P((void));
234void setsoftcamnet __P((void));
235void setsoftclock __P((void));
236void setsoftcrypto __P((void));
237void setsoftnet __P((void));
238void setsofttty __P((void));
239void setsoftvm __P((void));
240void setsofttq __P((void));
241void schedsoftcamnet __P((void));
242void schedsoftcambio __P((void));
243void schedsoftnet __P((void));
244void schedsofttty __P((void));
245void schedsoftvm __P((void));
246void schedsofttq __P((void));
247intrmask_t softclockpending __P((void));
248void spl0 __P((void));
249intrmask_t splbio __P((void));
250intrmask_t splcam __P((void));
251intrmask_t splclock __P((void));
252intrmask_t splcrypto __P((void));
253intrmask_t splhigh __P((void));
254intrmask_t splimp __P((void));
255intrmask_t splnet __P((void));
256intrmask_t splsoftcam __P((void));
257intrmask_t splsoftcambio __P((void));
258intrmask_t splsoftcamnet __P((void));
259intrmask_t splsoftclock __P((void));
260intrmask_t splsofttty __P((void));
261intrmask_t splsoftvm __P((void));
262intrmask_t splsofttq __P((void));
263intrmask_t splstatclock __P((void));
264intrmask_t spltty __P((void));
265intrmask_t splvm __P((void));
266void splx __P((intrmask_t ipl));
267void splz __P((void));
268#endif /* __i386__ */
269
270#ifdef __alpha__
271#include <machine/ipl.h>
272#endif
273
274#ifdef INVARIANT_SUPPORT
275void splbioassert __P((const char *msg));
276void splcamassert __P((const char *msg));
277void splclockassert __P((const char *msg));
278void splcryptoassert __P((const char *msg));
279void splhighassert __P((const char *msg));
280void splimpassert __P((const char *msg));
281void splnetassert __P((const char *msg));
282void splsoftcamassert __P((const char *msg));
283void splsoftcambioassert __P((const char *msg));
284void splsoftcamnetassert __P((const char *msg));
285void splsoftclockassert __P((const char *msg));
286void splsoftttyassert __P((const char *msg));
287void splsoftvmassert __P((const char *msg));
288void splsofttqassert __P((const char *msg));
289void splstatclockassert __P((const char *msg));
290void splttyassert __P((const char *msg));
291void splvmassert __P((const char *msg));
292#endif /* INVARIANT_SUPPORT */
293
294/*
295 * XXX It's not clear how "machine independent" these will be yet, but
296 * they are used all over the place especially in pci drivers. We would
297 * have to modify lots of drivers since <machine/cpufunc.h> no longer
298 * implicitly causes these to be defined when it #included <machine/spl.h>
299 */
300extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
301extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
302extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
303extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
304extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
305
306/* Read only */
307extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
308extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
309extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
310
311/*
312 * Various callout lists.
313 */
314
315/* Exit callout list declarations. */
dadab5e9 316typedef void (*exitlist_fn) __P((struct thread *td));
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317
318int at_exit __P((exitlist_fn function));
319int rm_at_exit __P((exitlist_fn function));
320
321/* Fork callout list declarations. */
322typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child,
323 int flags));
324
325int at_fork __P((forklist_fn function));
326int rm_at_fork __P((forklist_fn function));
327
328/*
329 * Not exactly a callout LIST, but a callout entry.
330 * Allow an external module to define a hardware watchdog tickler.
331 * Normally a process would do this, but there are times when the
332 * kernel needs to be able to hold off the watchdog, when the process
333 * is not active, e.g., when dumping core.
334 */
335typedef void (*watchdog_tickle_fn) __P((void));
336
337extern watchdog_tickle_fn wdog_tickler;
338
339/*
340 * Common `proc' functions are declared here so that proc.h can be included
341 * less often.
342 */
343int tsleep __P((void *chan, int pri, const char *wmesg, int timo));
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344int xsleep __P((struct xwait *w, int pri, const char *wmesg, int timo, int *gen));
345void xwakeup __P((struct xwait *w));
346void xwait_init __P((struct xwait *w));
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347void wakeup __P((void *chan));
348void wakeup_one __P((void *chan));
349
350/*
351 * Common `dev_t' stuff are declared here to avoid #include poisoning
352 */
353
354int major(dev_t x);
355int minor(dev_t x);
356dev_t makedev(int x, int y);
357udev_t dev2udev(dev_t x);
358dev_t udev2dev(udev_t x, int b);
359int uminor(udev_t dev);
360int umajor(udev_t dev);
361udev_t makeudev(int x, int y);
362#endif /* !_SYS_SYSTM_H_ */