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
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7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
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11 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer.
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19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
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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 1.41 2006/09/10 01:26:40 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 nswap; /* size of swap space */
71 extern int selwait; /* select timeout address */
73 extern u_char curpriority; /* priority of current process */
75 extern int physmem; /* physical memory */
77 extern cdev_t dumpdev; /* dump device */
78 extern long dumplo; /* offset into dumpdev */
80 extern cdev_t rootdev; /* root device */
81 extern cdev_t rootdevs[2]; /* possible root devices */
82 extern char *rootdevnames[2]; /* names of possible root devices */
84 extern int boothowto; /* reboot flags, from console subsystem */
85 extern int bootverbose; /* nonzero to print verbose messages */
87 extern int maxusers; /* system tune hint */
89 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
90 extern int ncpus2; /* ncpus rounded down to power of 2 */
91 extern int ncpus2_shift; /* log base 2 of ncpus2 */
92 extern int ncpus2_mask; /* ncpus2 - 1 */
93 extern int clocks_running; /* timing/timeout subsystem is operational */
95 #ifdef INVARIANTS /* The option is always available */
96 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
97 #define KKASSERT(exp) if (!(exp)) panic("assertion: %s in %s", #exp, __func__)
99 #define KASSERT(exp,msg)
100 #define KKASSERT(exp)
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]
108 * General function declarations.
122 void Debugger (const char *msg);
123 void backtrace(void);
124 void mi_gdinit (struct globaldata *gd, int cpu);
125 int dumpstatus (vm_offset_t addr, off_t count);
127 int seltrue (cdev_t dev, int which);
128 int ureadc (int, struct uio *);
129 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
130 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
133 void cpu_rootconf (void);
134 extern uint32_t crc32_tab[];
135 uint32_t crc32(const void *buf, size_t size);
136 void init_param1 (void);
137 void init_param2 (int physpages);
138 void tablefull (const char *);
139 int addlog (const char *, ...) __printflike(1, 2);
140 int kvprintf (char const *, void (*)(int, void*), void *, int,
141 __va_list) __printflike(1, 0);
142 int log (int, const char *, ...) __printflike(2, 3);
143 void logwakeup (void);
144 void log_console (struct uio *);
145 int printf (const char *, ...) __printflike(1, 2);
146 int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
147 int sprintf (char *buf, const char *, ...) __printflike(2, 3);
148 int uprintf (const char *, ...) __printflike(1, 2);
149 int vprintf (const char *, __va_list) __printflike(1, 0);
150 int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
151 int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
152 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
153 int sscanf (const char *, char const *, ...);
154 int vsscanf (const char *, char const *, __va_list);
155 long strtol (const char *, char **, int);
156 u_long strtoul (const char *, char **, int);
157 quad_t strtoq (const char *, char **, int);
158 u_quad_t strtouq (const char *, char **, int);
161 * note: some functions commonly used by device drivers may be passed
162 * pointers to volatile storage, volatile set to avoid warnings.
164 void bcopy (volatile const void *from, volatile void *to, size_t len);
165 void ovbcopy (const void *from, void *to, size_t len);
168 extern void (*bzero) (volatile void *buf, size_t len);
170 void bzero (void *buf, size_t len);
173 void *memcpy (void *to, const void *from, size_t len);
175 int copystr (const void *kfaddr, void *kdaddr, size_t len,
177 int copyinstr (const void *udaddr, void *kaddr, size_t len,
179 int copyin (const void *udaddr, void *kaddr, size_t len);
180 int copyout (const void *kaddr, void *udaddr, size_t len);
182 int fubyte (const void *base);
183 int subyte (void *base, int byte);
184 int suibyte (void *base, int byte);
185 long fuword (const void *base);
186 int suword (void *base, long word);
187 int fusword (void *base);
188 int susword (void *base, int word);
190 void realitexpire (void *);
191 void DELAY(int usec);
193 void startprofclock (struct proc *);
194 void stopprofclock (struct proc *);
195 void setstatclockrate (int hzrate);
197 char *kgetenv (const char *name);
198 #define testenv kgetenv
200 int kgetenv_int (const char *name, int *data);
201 int kgetenv_string (const char *name, char *data, int size);
202 int kgetenv_quad (const char *name, quad_t *data);
203 extern char *kern_envp;
205 #ifdef APM_FIXUP_CALLTODO
206 void adjust_timeout_calltodo (struct timeval *time_change);
207 #endif /* APM_FIXUP_CALLTODO */
209 #include <sys/libkern.h>
211 /* Initialize the world */
212 void consinit (void);
213 void cpu_initclocks (void);
215 void usrinfoinit (void);
217 /* Finalize the world. */
218 void shutdown_nice (int);
221 * Kernel to clock driver interface.
223 void inittodr (time_t base);
224 void resettodr (void);
225 void startrtclock (void);
228 typedef void timeout_t (void *); /* timeout function type */
229 #define CALLOUT_HANDLE_INITIALIZER(handle) \
233 /* OBSOLETE INTERFACE */
234 void callout_handle_init (struct callout_handle *);
235 struct callout_handle timeout (timeout_t *, void *, int);
236 void untimeout (timeout_t *, void *, struct callout_handle);
239 /* Interrupt management */
242 * For the alpha arch, some of these functions are static __inline, and
243 * the others should be.
246 void setdelayed (void);
247 void setsoftast (void);
248 void setsoftcambio (void);
249 void setsoftcamnet (void);
250 void setsoftclock (void);
251 void setsoftcrypto (void);
252 void setsoftnet (void);
253 void setsofttty (void);
254 void setsoftvm (void);
255 void setsofttq (void);
256 void schedsoftcamnet (void);
257 void schedsoftcambio (void);
258 void schedsoftnet (void);
259 void schedsofttty (void);
260 void schedsoftvm (void);
261 void schedsofttq (void);
262 intrmask_t softclockpending (void);
264 #endif /* __i386__ */
267 * Various callout lists.
270 /* Exit callout list declarations. */
271 typedef void (*exitlist_fn) (struct thread *td);
273 int at_exit (exitlist_fn function);
274 int rm_at_exit (exitlist_fn function);
276 /* Fork callout list declarations. */
277 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
280 int at_fork (forklist_fn function);
281 int rm_at_fork (forklist_fn function);
284 * Not exactly a callout LIST, but a callout entry.
285 * Allow an external module to define a hardware watchdog tickler.
286 * Normally a process would do this, but there are times when the
287 * kernel needs to be able to hold off the watchdog, when the process
288 * is not active, e.g., when dumping core.
290 typedef void (*watchdog_tickle_fn) (void);
292 extern watchdog_tickle_fn wdog_tickler;
295 * Common `proc' functions are declared here so that proc.h can be included
298 int tsleep (void *, int, const char *, int);
299 int msleep (void *, struct spinlock *, int, const char *, int);
300 void tsleep_interlock (void *chan);
301 void tstop (struct proc *);
302 void wakeup (void *chan);
303 void wakeup_one (void *chan);
304 void wakeup_mycpu (void *chan);
305 void wakeup_mycpu_one (void *chan);
306 void wakeup_oncpu (struct globaldata *gd, void *chan);
307 void wakeup_oncpu_one (struct globaldata *gd, void *chan);
308 void wakeup_domain (void *chan, int domain);
309 void wakeup_domain_one (void *chan, int domain);
312 * Common `cdev_t' stuff are declared here to avoid #include poisoning
317 udev_t dev2udev(cdev_t x);
318 cdev_t udev2dev(udev_t x, int b);
319 int uminor(udev_t dev);
320 int umajor(udev_t dev);
321 udev_t makeudev(int x, int y);
324 #endif /* !_SYS_SYSTM_H_ */