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.
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
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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 1.35 2006/03/12 20:44:43 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 dev_t dumpdev; /* dump device */
78 extern long dumplo; /* offset into dumpdev */
80 extern dev_t rootdev; /* root device */
81 extern dev_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.
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 eopnotsupp (void);
128 int seltrue (dev_t dev, int which, struct thread *td);
129 int ureadc (int, struct uio *);
130 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
131 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
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);
169 extern void (*bzero) (volatile void *buf, size_t len);
171 void bzero (void *buf, size_t len);
174 void *memcpy (void *to, const void *from, size_t len);
176 int copystr (const void *kfaddr, void *kdaddr, size_t len,
178 int copyinstr (const void *udaddr, void *kaddr, size_t len,
180 int copyin (const void *udaddr, void *kaddr, size_t len);
181 int copyout (const void *kaddr, void *udaddr, size_t len);
183 int fubyte (const void *base);
184 int subyte (void *base, int byte);
185 int suibyte (void *base, int byte);
186 long fuword (const void *base);
187 int suword (void *base, long word);
188 int fusword (void *base);
189 int susword (void *base, int word);
191 void realitexpire (void *);
192 void DELAY(int usec);
194 void startprofclock (struct proc *);
195 void stopprofclock (struct proc *);
196 void setstatclockrate (int hzrate);
198 char *getenv (const char *name);
199 #define testenv getenv
201 int getenv_int (const char *name, int *data);
202 int getenv_string (const char *name, char *data, int size);
203 int getenv_quad (const char *name, quad_t *data);
204 extern char *kern_envp;
206 #ifdef APM_FIXUP_CALLTODO
207 void adjust_timeout_calltodo (struct timeval *time_change);
208 #endif /* APM_FIXUP_CALLTODO */
210 #include <sys/libkern.h>
212 /* Initialize the world */
213 void consinit (void);
214 void cpu_initclocks (void);
216 void usrinfoinit (void);
218 /* Finalize the world. */
219 void shutdown_nice (int);
222 * Kernel to clock driver interface.
224 void inittodr (time_t base);
225 void resettodr (void);
226 void startrtclock (void);
229 typedef void timeout_t (void *); /* timeout function type */
230 #define CALLOUT_HANDLE_INITIALIZER(handle) \
234 /* OBSOLETE INTERFACE */
235 void callout_handle_init (struct callout_handle *);
236 struct callout_handle timeout (timeout_t *, void *, int);
237 void untimeout (timeout_t *, void *, struct callout_handle);
240 /* Interrupt management */
243 * For the alpha arch, some of these functions are static __inline, and
244 * the others should be.
247 void setdelayed (void);
248 void setsoftast (void);
249 void setsoftcambio (void);
250 void setsoftcamnet (void);
251 void setsoftclock (void);
252 void setsoftcrypto (void);
253 void setsoftnet (void);
254 void setsofttty (void);
255 void setsoftvm (void);
256 void setsofttq (void);
257 void schedsoftcamnet (void);
258 void schedsoftcambio (void);
259 void schedsoftnet (void);
260 void schedsofttty (void);
261 void schedsoftvm (void);
262 void schedsofttq (void);
263 intrmask_t softclockpending (void);
265 #endif /* __i386__ */
268 * Various callout lists.
271 /* Exit callout list declarations. */
272 typedef void (*exitlist_fn) (struct thread *td);
274 int at_exit (exitlist_fn function);
275 int rm_at_exit (exitlist_fn function);
277 /* Fork callout list declarations. */
278 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
281 int at_fork (forklist_fn function);
282 int rm_at_fork (forklist_fn function);
285 * Not exactly a callout LIST, but a callout entry.
286 * Allow an external module to define a hardware watchdog tickler.
287 * Normally a process would do this, but there are times when the
288 * kernel needs to be able to hold off the watchdog, when the process
289 * is not active, e.g., when dumping core.
291 typedef void (*watchdog_tickle_fn) (void);
293 extern watchdog_tickle_fn wdog_tickler;
296 * Common `proc' functions are declared here so that proc.h can be included
299 int tsleep (void *chan, int slpflags, const char *wmesg, int timo);
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_domain (void *chan, int domain);
305 void wakeup_domain_one (void *chan, int domain);
306 void wakeup_oncpu (void *, int, int);
309 * Common `dev_t' stuff are declared here to avoid #include poisoning
314 udev_t dev2udev(dev_t x);
315 dev_t udev2dev(udev_t x, int b);
316 int uminor(udev_t dev);
317 int umajor(udev_t dev);
318 udev_t makeudev(int x, int y);
319 #endif /* !_SYS_SYSTM_H_ */