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.
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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.
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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
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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 1.42 2006/09/30 20:03:44 swildner 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.
120 void Debugger (const char *msg);
121 void backtrace(void);
122 void mi_gdinit (struct globaldata *gd, int cpu);
123 int dumpstatus (vm_offset_t addr, off_t count);
125 int seltrue (cdev_t dev, int which);
126 int ureadc (int, struct uio *);
127 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
128 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
131 void cpu_rootconf (void);
132 extern uint32_t crc32_tab[];
133 uint32_t crc32(const void *buf, size_t size);
134 void init_param1 (void);
135 void init_param2 (int physpages);
136 void tablefull (const char *);
137 int addlog (const char *, ...) __printflike(1, 2);
138 int kvprintf (char const *, void (*)(int, void*), void *, int,
139 __va_list) __printflike(1, 0);
140 int log (int, const char *, ...) __printflike(2, 3);
141 void logwakeup (void);
142 void log_console (struct uio *);
143 int printf (const char *, ...) __printflike(1, 2);
144 int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
145 int sprintf (char *buf, const char *, ...) __printflike(2, 3);
146 int uprintf (const char *, ...) __printflike(1, 2);
147 int vprintf (const char *, __va_list) __printflike(1, 0);
148 int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
149 int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
150 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
151 int sscanf (const char *, char const *, ...);
152 int vsscanf (const char *, char const *, __va_list);
153 long strtol (const char *, char **, int);
154 u_long strtoul (const char *, char **, int);
155 quad_t strtoq (const char *, char **, int);
156 u_quad_t strtouq (const char *, char **, int);
159 * note: some functions commonly used by device drivers may be passed
160 * pointers to volatile storage, volatile set to avoid warnings.
162 void bcopy (volatile const void *from, volatile void *to, size_t len);
163 void ovbcopy (const void *from, void *to, size_t len);
166 extern void (*bzero) (volatile void *buf, size_t len);
168 void bzero (void *buf, size_t len);
171 void *memcpy (void *to, const void *from, size_t len);
173 int copystr (const void *kfaddr, void *kdaddr, size_t len,
175 int copyinstr (const void *udaddr, void *kaddr, size_t len,
177 int copyin (const void *udaddr, void *kaddr, size_t len);
178 int copyout (const void *kaddr, void *udaddr, size_t len);
180 int fubyte (const void *base);
181 int subyte (void *base, int byte);
182 int suibyte (void *base, int byte);
183 long fuword (const void *base);
184 int suword (void *base, long word);
185 int fusword (void *base);
186 int susword (void *base, int word);
188 void realitexpire (void *);
189 void DELAY(int usec);
191 void startprofclock (struct proc *);
192 void stopprofclock (struct proc *);
193 void setstatclockrate (int hzrate);
195 char *kgetenv (const char *name);
196 #define testenv kgetenv
198 int kgetenv_int (const char *name, int *data);
199 int kgetenv_string (const char *name, char *data, int size);
200 int kgetenv_quad (const char *name, quad_t *data);
201 extern char *kern_envp;
203 #ifdef APM_FIXUP_CALLTODO
204 void adjust_timeout_calltodo (struct timeval *time_change);
205 #endif /* APM_FIXUP_CALLTODO */
207 #include <sys/libkern.h>
209 /* Initialize the world */
210 void consinit (void);
211 void cpu_initclocks (void);
213 void usrinfoinit (void);
215 /* Finalize the world. */
216 void shutdown_nice (int);
219 * Kernel to clock driver interface.
221 void inittodr (time_t base);
222 void resettodr (void);
223 void startrtclock (void);
226 typedef void timeout_t (void *); /* timeout function type */
227 #define CALLOUT_HANDLE_INITIALIZER(handle) \
231 /* OBSOLETE INTERFACE */
232 void callout_handle_init (struct callout_handle *);
233 struct callout_handle timeout (timeout_t *, void *, int);
234 void untimeout (timeout_t *, void *, struct callout_handle);
237 /* Interrupt management */
240 * For the alpha arch, some of these functions are static __inline, and
241 * the others should be.
244 void setdelayed (void);
245 void setsoftast (void);
246 void setsoftcambio (void);
247 void setsoftcamnet (void);
248 void setsoftclock (void);
249 void setsoftcrypto (void);
250 void setsoftnet (void);
251 void setsofttty (void);
252 void setsoftvm (void);
253 void setsofttq (void);
254 void schedsoftcamnet (void);
255 void schedsoftcambio (void);
256 void schedsoftnet (void);
257 void schedsofttty (void);
258 void schedsoftvm (void);
259 void schedsofttq (void);
260 intrmask_t softclockpending (void);
262 #endif /* __i386__ */
265 * Various callout lists.
268 /* Exit callout list declarations. */
269 typedef void (*exitlist_fn) (struct thread *td);
271 int at_exit (exitlist_fn function);
272 int rm_at_exit (exitlist_fn function);
274 /* Fork callout list declarations. */
275 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
278 int at_fork (forklist_fn function);
279 int rm_at_fork (forklist_fn function);
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.
288 typedef void (*watchdog_tickle_fn) (void);
290 extern watchdog_tickle_fn wdog_tickler;
293 * Common `proc' functions are declared here so that proc.h can be included
296 int tsleep (void *, int, const char *, int);
297 int msleep (void *, struct spinlock *, int, const char *, int);
298 void tsleep_interlock (void *chan);
299 void tstop (struct proc *);
300 void wakeup (void *chan);
301 void wakeup_one (void *chan);
302 void wakeup_mycpu (void *chan);
303 void wakeup_mycpu_one (void *chan);
304 void wakeup_oncpu (struct globaldata *gd, void *chan);
305 void wakeup_oncpu_one (struct globaldata *gd, void *chan);
306 void wakeup_domain (void *chan, int domain);
307 void wakeup_domain_one (void *chan, int domain);
310 * Common `cdev_t' stuff are declared here to avoid #include poisoning
315 udev_t dev2udev(cdev_t x);
316 cdev_t udev2dev(udev_t x, int b);
317 int uminor(udev_t dev);
318 int umajor(udev_t dev);
319 udev_t makeudev(int x, int y);
322 #endif /* !_SYS_SYSTM_H_ */