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
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.
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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
45 #include <machine/atomic.h>
46 #include <machine/cpufunc.h>
47 #include <sys/callout.h>
49 extern int securelevel; /* system security level (see init(8)) */
50 extern int suser_enabled; /* suser_xxx() is permitted to return 0 */
52 extern int cold; /* nonzero if we are doing a cold boot */
53 extern const char *panicstr; /* panic message */
54 extern int dumping; /* system is dumping */
55 extern char version[]; /* system version */
56 extern char copyright[]; /* system copyright */
58 extern int nswap; /* size of swap space */
60 extern int nselcoll; /* select collisions since boot */
61 extern struct mtx sellock; /* select lock variable */
62 extern struct cv selwait; /* select conditional variable */
64 extern int physmem; /* physical memory */
66 extern dev_t dumpdev; /* dump device */
67 extern long dumplo; /* offset into dumpdev */
69 extern dev_t rootdev; /* root device */
70 extern dev_t rootdevs[2]; /* possible root devices */
71 extern char *rootdevnames[2]; /* names of possible root devices */
72 extern struct vnode *rootvp; /* vnode equivalent to above */
74 extern int boothowto; /* reboot flags, from console subsystem */
75 extern int bootverbose; /* nonzero to print verbose messages */
77 extern int maxusers; /* system tune hint */
79 #ifdef INVARIANTS /* The option is always available */
80 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
82 #define KASSERT(exp,msg)
86 * XXX the hints declarations are even more misplaced than most declarations
87 * in this file, since they are needed in one file (per arch) and only used
89 * XXX most of these variables should be const.
92 extern int hintmode; /* 0 = off. 1 = config, 2 = fallback */
93 extern char *kern_envp;
94 extern char static_env[];
95 extern char static_hints[]; /* by config for now */
98 * General function declarations.
112 int setjmp __P((struct _jmp_buf *));
113 void longjmp __P((struct _jmp_buf *, int)) __dead2;
114 void Debugger __P((const char *msg));
115 int dumpstatus __P((vm_offset_t addr, off_t count));
116 int nullop __P((void));
117 int eopnotsupp __P((void));
118 int seltrue __P((dev_t dev, int which, struct thread *td));
119 int ureadc __P((int, struct uio *));
120 void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask));
121 void *phashinit __P((int count, struct malloc_type *type, u_long *nentries));
123 #ifdef RESTARTABLE_PANICS
124 void panic __P((const char *, ...)) __printflike(1, 2);
126 void panic __P((const char *, ...)) __dead2 __printflike(1, 2);
129 void cpu_boot __P((int));
130 void cpu_rootconf __P((void));
131 void critical_enter __P((void));
132 void critical_exit __P((void));
133 void init_param1 __P((void));
134 void init_param2 __P((int physpages));
135 void tablefull __P((const char *));
136 int kvprintf __P((char const *, void (*)(int, void*), void *, int,
137 _BSD_VA_LIST_)) __printflike(1, 0);
138 void log __P((int, const char *, ...)) __printflike(2, 3);
139 void log_console __P((struct uio *));
140 int printf __P((const char *, ...)) __printflike(1, 2);
141 int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
142 int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3);
143 int uprintf __P((const char *, ...)) __printflike(1, 2);
144 int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0);
145 int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0);
146 int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0);
147 int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3);
148 int sscanf __P((const char *, char const *, ...));
149 int vsscanf __P((const char *, char const *, _BSD_VA_LIST_));
150 long strtol __P((const char *, char **, int));
151 u_long strtoul __P((const char *, char **, int));
152 quad_t strtoq __P((const char *, char **, int));
153 u_quad_t strtouq __P((const char *, char **, int));
154 void tprintf __P((struct proc *p, int pri, const char *, ...)) __printflike(3, 4);
156 void bcopy __P((const void *from, void *to, size_t len));
157 void ovbcopy __P((const void *from, void *to, size_t len));
160 extern void (*bzero) __P((void *buf, size_t len));
162 void bzero __P((void *buf, size_t len));
165 void *memcpy __P((void *to, const void *from, size_t len));
167 int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
169 int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
171 int copyin __P((const void *udaddr, void *kaddr, size_t len));
172 int copyout __P((const void *kaddr, void *udaddr, size_t len));
174 int fubyte __P((const void *base));
175 int subyte __P((void *base, int byte));
176 int suibyte __P((void *base, int byte));
177 long fuword __P((const void *base));
178 int suword __P((void *base, long word));
179 int fusword __P((void *base));
180 int susword __P((void *base, int word));
182 void realitexpire __P((void *));
184 void hardclock __P((struct clockframe *frame));
185 void hardclock_process __P((struct thread *td, int user));
186 void softclock __P((void *));
187 void statclock __P((struct clockframe *frame));
188 void statclock_process __P((struct kse *ke, register_t pc, int user));
190 void startprofclock __P((struct proc *));
191 void stopprofclock __P((struct proc *));
192 void setstatclockrate __P((int hzrate));
194 /* flags for suser_xxx() */
195 #define PRISON_ROOT 1
197 int suser __P((struct proc *));
198 int suser_td __P((struct thread *));
199 int suser_xxx __P((struct ucred *cred, struct proc *proc, int flag));
200 int suser_xxx_td __P((struct ucred *cred, struct thread *thread, int flag));
201 int cr_cansee __P((struct ucred *u1, struct ucred *u2));
203 char *getenv __P((const char *name));
204 int getenv_int __P((const char *name, int *data));
205 int getenv_string __P((const char *name, char *data, int size));
206 int getenv_quad __P((const char *name, quad_t *data));
208 #ifdef APM_FIXUP_CALLTODO
210 void adjust_timeout_calltodo __P((struct timeval *time_change));
211 #endif /* APM_FIXUP_CALLTODO */
213 #include <sys/libkern.h>
215 /* Initialize the world */
216 void consinit __P((void));
217 void cpu_initclocks __P((void));
218 void usrinfoinit __P((void));
220 /* Finalize the world. */
221 void shutdown_nice __P((int));
224 * Kernel to clock driver interface.
226 void inittodr __P((time_t base));
227 void resettodr __P((void));
228 void startrtclock __P((void));
231 typedef void timeout_t __P((void *)); /* timeout function type */
232 #define CALLOUT_HANDLE_INITIALIZER(handle) \
235 void callout_handle_init __P((struct callout_handle *));
236 struct callout_handle timeout __P((timeout_t *, void *, int));
237 void untimeout __P((timeout_t *, void *, struct callout_handle));
238 caddr_t kern_timeout_callwheel_alloc __P((caddr_t v));
239 void kern_timeout_callwheel_init __P((void));
241 /* Stubs for obsolete functions that used to be for interrupt management */
242 static __inline void spl0(void) { return; }
243 static __inline intrmask_t splbio(void) { return 0; }
244 static __inline intrmask_t splcam(void) { return 0; }
245 static __inline intrmask_t splclock(void) { return 0; }
246 static __inline intrmask_t splhigh(void) { return 0; }
247 static __inline intrmask_t splimp(void) { return 0; }
248 static __inline intrmask_t splnet(void) { return 0; }
249 static __inline intrmask_t splsoftcam(void) { return 0; }
250 static __inline intrmask_t splsoftclock(void) { return 0; }
251 static __inline intrmask_t splsofttty(void) { return 0; }
252 static __inline intrmask_t splsoftvm(void) { return 0; }
253 static __inline intrmask_t splsofttq(void) { return 0; }
254 static __inline intrmask_t splstatclock(void) { return 0; }
255 static __inline intrmask_t spltty(void) { return 0; }
256 static __inline intrmask_t splvm(void) { return 0; }
257 static __inline void splx(intrmask_t ipl) { return; }
260 * Various callout lists.
263 /* Exit callout list declarations. */
264 typedef void (*exitlist_fn) __P((struct proc *procp));
266 int at_exit __P((exitlist_fn function));
267 int rm_at_exit __P((exitlist_fn function));
269 /* Fork callout list declarations. */
270 typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child,
273 int at_fork __P((forklist_fn function));
274 int rm_at_fork __P((forklist_fn function));
276 /* Exec callout list declarations. */
277 typedef void (*execlist_fn) __P((struct proc *procp));
279 int at_exec __P((execlist_fn function));
280 int rm_at_exec __P((execlist_fn function));
283 * Not exactly a callout LIST, but a callout entry.
284 * Allow an external module to define a hardware watchdog tickler.
285 * Normally a process would do this, but there are times when the
286 * kernel needs to be able to hold off the watchdog, when the process
287 * is not active, e.g., when dumping core.
289 typedef void (*watchdog_tickle_fn) __P((void));
291 extern watchdog_tickle_fn wdog_tickler;
294 * Common `proc' functions are declared here so that proc.h can be included
297 int msleep __P((void *chan, struct mtx *mtx, int pri, const char *wmesg,
299 #define tsleep(chan, pri, wmesg, timo) msleep(chan, NULL, pri, wmesg, timo)
300 void wakeup __P((void *chan));
301 void wakeup_one __P((void *chan));
304 * Common `dev_t' stuff are declared here to avoid #include poisoning
309 dev_t makedev(int x, int y);
310 udev_t dev2udev(dev_t x);
311 dev_t udev2dev(udev_t x, int b);
312 int uminor(udev_t dev);
313 int umajor(udev_t dev);
314 udev_t makeudev(int x, int y);
316 /* XXX: Should be void nanodelay(u_int nsec); */
317 void DELAY __P((int usec));
319 #endif /* !_SYS_SYSTM_H_ */