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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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
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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.
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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
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 1.44 2006/10/23 15:42:50 dillon Exp $
47 #error "This file should not be included by userland programs."
50 #ifndef _MACHINE_TYPES_H_
51 #include <machine/types.h>
53 #ifndef _MACHINE_STDARG_H_
54 #include <machine/stdarg.h>
56 #include <machine/atomic.h>
57 #include <machine/cpufunc.h>
58 #include <sys/callout.h>
60 extern int securelevel; /* system security level (see init(8)) */
62 extern int cold; /* nonzero if we are doing a cold boot */
63 extern const char *panicstr; /* panic message */
64 extern int dumping; /* system is dumping */
65 extern int safepri; /* safe ipl when cold or panicing */
66 extern char version[]; /* system version */
67 extern char copyright[]; /* system copyright */
69 extern int selwait; /* select timeout address */
71 extern u_char curpriority; /* priority of current process */
73 extern int physmem; /* physical memory */
75 extern cdev_t dumpdev; /* dump device */
76 extern long dumplo; /* offset into dumpdev */
78 extern cdev_t rootdev; /* root device */
79 extern cdev_t rootdevs[2]; /* possible root devices */
80 extern char *rootdevnames[2]; /* names of possible root devices */
82 extern int boothowto; /* reboot flags, from console subsystem */
83 extern int bootverbose; /* nonzero to print verbose messages */
85 extern int maxusers; /* system tune hint */
87 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
88 extern int ncpus2; /* ncpus rounded down to power of 2 */
89 extern int ncpus2_shift; /* log base 2 of ncpus2 */
90 extern int ncpus2_mask; /* ncpus2 - 1 */
91 extern int clocks_running; /* timing/timeout subsystem is operational */
93 #ifdef INVARIANTS /* The option is always available */
94 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
95 #define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
97 #define KASSERT(exp,msg)
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]
106 * General function declarations.
121 void Debugger (const char *msg);
122 void backtrace(void);
123 void mi_gdinit (struct globaldata *gd, int cpu);
124 int dumpstatus (vm_offset_t addr, off_t count);
126 int seltrue (cdev_t dev, int which);
127 int ureadc (int, struct uio *);
128 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
129 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
131 int cpu_sanitize_frame (struct trapframe *);
134 void cpu_rootconf (void);
135 extern uint32_t crc32_tab[];
136 uint32_t crc32(const void *buf, size_t size);
137 void init_param1 (void);
138 void init_param2 (int physpages);
139 void tablefull (const char *);
140 int addlog (const char *, ...) __printflike(1, 2);
141 int kvprintf (char const *, void (*)(int, void*), void *, int,
142 __va_list) __printflike(1, 0);
143 int log (int, const char *, ...) __printflike(2, 3);
144 void logwakeup (void);
145 void log_console (struct uio *);
146 int printf (const char *, ...) __printflike(1, 2);
147 int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
148 int sprintf (char *buf, const char *, ...) __printflike(2, 3);
149 int uprintf (const char *, ...) __printflike(1, 2);
150 int vprintf (const char *, __va_list) __printflike(1, 0);
151 int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
152 int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
153 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
154 int sscanf (const char *, char const *, ...);
155 int vsscanf (const char *, char const *, __va_list);
156 long strtol (const char *, char **, int);
157 u_long strtoul (const char *, char **, int);
158 quad_t strtoq (const char *, char **, int);
159 u_quad_t strtouq (const char *, char **, int);
162 * note: some functions commonly used by device drivers may be passed
163 * pointers to volatile storage, volatile set to avoid warnings.
165 void bcopy (volatile const void *from, volatile void *to, size_t len);
166 void ovbcopy (const void *from, void *to, size_t len);
167 void bzero (volatile void *buf, size_t len);
168 void *memcpy (void *to, const void *from, size_t len);
170 int copystr (const void *kfaddr, void *kdaddr, size_t len,
172 int copyinstr (const void *udaddr, void *kaddr, size_t len,
174 int copyin (const void *udaddr, void *kaddr, size_t len);
175 int copyout (const void *kaddr, void *udaddr, size_t len);
177 int fubyte (const void *base);
178 int subyte (void *base, int byte);
179 int suibyte (void *base, int byte);
180 long fuword (const void *base);
181 int suword (void *base, long word);
182 int fusword (void *base);
183 int susword (void *base, int word);
185 void realitexpire (void *);
186 void DELAY(int usec);
188 void startprofclock (struct proc *);
189 void stopprofclock (struct proc *);
190 void setstatclockrate (int hzrate);
192 char *kgetenv (const char *name);
193 #define testenv kgetenv
195 int kgetenv_int (const char *name, int *data);
196 int kgetenv_string (const char *name, char *data, int size);
197 int kgetenv_quad (const char *name, quad_t *data);
198 extern char *kern_envp;
200 #ifdef APM_FIXUP_CALLTODO
201 void adjust_timeout_calltodo (struct timeval *time_change);
202 #endif /* APM_FIXUP_CALLTODO */
204 #include <sys/libkern.h>
206 /* Initialize the world */
207 void consinit (void);
208 void cpu_initclocks (void);
210 void usrinfoinit (void);
212 /* Finalize the world. */
213 void shutdown_nice (int);
216 * Kernel to clock driver interface.
218 void inittodr (time_t base);
219 void resettodr (void);
220 void startrtclock (void);
223 typedef void timeout_t (void *); /* timeout function type */
224 #define CALLOUT_HANDLE_INITIALIZER(handle) \
228 /* OBSOLETE INTERFACE */
229 void callout_handle_init (struct callout_handle *);
230 struct callout_handle timeout (timeout_t *, void *, int);
231 void untimeout (timeout_t *, void *, struct callout_handle);
234 /* Interrupt management */
237 * For the alpha arch, some of these functions are static __inline, and
238 * the others should be.
241 void setdelayed (void);
242 void setsoftast (void);
243 void setsoftcambio (void);
244 void setsoftcamnet (void);
245 void setsoftclock (void);
246 void setsoftcrypto (void);
247 void setsoftnet (void);
248 void setsofttty (void);
249 void setsoftvm (void);
250 void setsofttq (void);
251 void schedsoftcamnet (void);
252 void schedsoftcambio (void);
253 void schedsoftnet (void);
254 void schedsofttty (void);
255 void schedsoftvm (void);
256 void schedsofttq (void);
257 intrmask_t softclockpending (void);
259 #endif /* __i386__ */
262 * Various callout lists.
265 /* Exit callout list declarations. */
266 typedef void (*exitlist_fn) (struct thread *td);
268 int at_exit (exitlist_fn function);
269 int rm_at_exit (exitlist_fn function);
271 /* Fork callout list declarations. */
272 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
275 int at_fork (forklist_fn function);
276 int rm_at_fork (forklist_fn function);
279 * Not exactly a callout LIST, but a callout entry.
280 * Allow an external module to define a hardware watchdog tickler.
281 * Normally a process would do this, but there are times when the
282 * kernel needs to be able to hold off the watchdog, when the process
283 * is not active, e.g., when dumping core.
285 typedef void (*watchdog_tickle_fn) (void);
287 extern watchdog_tickle_fn wdog_tickler;
290 * Common `proc' functions are declared here so that proc.h can be included
293 int tsleep (void *, int, const char *, int);
294 int msleep (void *, struct spinlock *, int, const char *, int);
295 void tsleep_interlock (void *chan);
296 void tstop (struct proc *);
297 void wakeup (void *chan);
298 void wakeup_one (void *chan);
299 void wakeup_mycpu (void *chan);
300 void wakeup_mycpu_one (void *chan);
301 void wakeup_oncpu (struct globaldata *gd, void *chan);
302 void wakeup_oncpu_one (struct globaldata *gd, void *chan);
303 void wakeup_domain (void *chan, int domain);
304 void wakeup_domain_one (void *chan, int domain);
307 * Common `cdev_t' stuff are declared here to avoid #include poisoning
312 udev_t dev2udev(cdev_t x);
313 cdev_t udev2dev(udev_t x, int b);
314 int uminor(udev_t dev);
315 int umajor(udev_t dev);
316 udev_t makeudev(int x, int y);
319 #endif /* !_SYS_SYSTM_H_ */