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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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
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 struct cv selwait; /* select conditional variable */
62 extern int physmem; /* physical memory */
64 extern dev_t dumpdev; /* dump device */
65 extern long dumplo; /* offset into dumpdev */
67 extern dev_t rootdev; /* root device */
68 extern dev_t rootdevs[2]; /* possible root devices */
69 extern char *rootdevnames[2]; /* names of possible root devices */
70 extern struct vnode *rootvp; /* vnode equivalent to above */
72 extern int boothowto; /* reboot flags, from console subsystem */
73 extern int bootverbose; /* nonzero to print verbose messages */
75 extern int maxusers; /* system tune hint */
77 #ifdef INVARIANTS /* The option is always available */
78 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
80 #define KASSERT(exp,msg)
84 * XXX the hints declarations are even more misplaced than most declarations
85 * in this file, since they are needed in one file (per arch) and only used
87 * XXX most of these variables should be const.
90 extern int hintmode; /* 0 = off. 1 = config, 2 = fallback */
91 extern char *kern_envp;
92 extern char static_env[];
93 extern char static_hints[]; /* by config for now */
96 * General function declarations.
110 int setjmp __P((struct _jmp_buf *));
111 void longjmp __P((struct _jmp_buf *, int)) __dead2;
112 void Debugger __P((const char *msg));
113 int dumpstatus __P((vm_offset_t addr, off_t count));
114 int nullop __P((void));
115 int eopnotsupp __P((void));
116 int seltrue __P((dev_t dev, int which, struct thread *td));
117 int ureadc __P((int, struct uio *));
118 void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask));
119 void *phashinit __P((int count, struct malloc_type *type, u_long *nentries));
121 #ifdef RESTARTABLE_PANICS
122 void panic __P((const char *, ...)) __printflike(1, 2);
124 void panic __P((const char *, ...)) __dead2 __printflike(1, 2);
127 void cpu_boot __P((int));
128 void cpu_rootconf __P((void));
129 void critical_enter __P((void));
130 void critical_exit __P((void));
131 void init_param1 __P((void));
132 void init_param2 __P((int physpages));
133 void tablefull __P((const char *));
134 int kvprintf __P((char const *, void (*)(int, void*), void *, int,
135 _BSD_VA_LIST_)) __printflike(1, 0);
136 void log __P((int, const char *, ...)) __printflike(2, 3);
137 void log_console __P((struct uio *));
138 int printf __P((const char *, ...)) __printflike(1, 2);
139 int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
140 int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3);
141 int uprintf __P((const char *, ...)) __printflike(1, 2);
142 int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0);
143 int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0);
144 int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0);
145 int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3);
146 int sscanf __P((const char *, char const *, ...));
147 int vsscanf __P((const char *, char const *, _BSD_VA_LIST_));
148 long strtol __P((const char *, char **, int));
149 u_long strtoul __P((const char *, char **, int));
150 quad_t strtoq __P((const char *, char **, int));
151 u_quad_t strtouq __P((const char *, char **, int));
152 void tprintf __P((struct proc *p, int pri, const char *, ...)) __printflike(3, 4);
154 void bcopy __P((const void *from, void *to, size_t len));
155 void ovbcopy __P((const void *from, void *to, size_t len));
158 extern void (*bzero) __P((volatile void *buf, size_t len));
160 void bzero __P((void *buf, size_t len));
163 void *memcpy __P((void *to, const void *from, size_t len));
165 int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
167 int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
169 int copyin __P((const void *udaddr, void *kaddr, size_t len));
170 int copyout __P((const void *kaddr, void *udaddr, size_t len));
172 int fubyte __P((const void *base));
173 int subyte __P((void *base, int byte));
174 int suibyte __P((void *base, int byte));
175 long fuword __P((const void *base));
176 int suword __P((void *base, long word));
177 int fusword __P((void *base));
178 int susword __P((void *base, int word));
180 void realitexpire __P((void *));
182 void hardclock __P((struct clockframe *frame));
183 void hardclock_process __P((struct thread *td, int user));
184 void softclock __P((void *));
185 void statclock __P((struct clockframe *frame));
186 void statclock_process __P((struct kse *ke, register_t pc, int user));
188 void startprofclock __P((struct proc *));
189 void stopprofclock __P((struct proc *));
190 void setstatclockrate __P((int hzrate));
192 /* flags for suser_xxx() */
193 #define PRISON_ROOT 1
195 int suser __P((struct proc *));
196 int suser_td __P((struct thread *));
197 int suser_xxx __P((struct ucred *cred, struct proc *proc, int flag));
198 int suser_xxx_td __P((struct ucred *cred, struct thread *thread, int flag));
199 int cr_cansee __P((struct ucred *u1, struct ucred *u2));
201 char *getenv __P((const char *name));
202 int getenv_int __P((const char *name, int *data));
203 int getenv_string __P((const char *name, char *data, int size));
204 int getenv_quad __P((const char *name, quad_t *data));
206 #ifdef APM_FIXUP_CALLTODO
208 void adjust_timeout_calltodo __P((struct timeval *time_change));
209 #endif /* APM_FIXUP_CALLTODO */
211 #include <sys/libkern.h>
213 /* Initialize the world */
214 void consinit __P((void));
215 void cpu_initclocks __P((void));
216 void usrinfoinit __P((void));
218 /* Finalize the world. */
219 void shutdown_nice __P((int));
222 * Kernel to clock driver interface.
224 void inittodr __P((time_t base));
225 void resettodr __P((void));
226 void startrtclock __P((void));
229 typedef void timeout_t __P((void *)); /* timeout function type */
230 #define CALLOUT_HANDLE_INITIALIZER(handle) \
233 void callout_handle_init __P((struct callout_handle *));
234 struct callout_handle timeout __P((timeout_t *, void *, int));
235 void untimeout __P((timeout_t *, void *, struct callout_handle));
236 caddr_t kern_timeout_callwheel_alloc __P((caddr_t v));
237 void kern_timeout_callwheel_init __P((void));
239 /* Stubs for obsolete functions that used to be for interrupt management */
240 static __inline void spl0(void) { return; }
241 static __inline intrmask_t splbio(void) { return 0; }
242 static __inline intrmask_t splcam(void) { return 0; }
243 static __inline intrmask_t splclock(void) { return 0; }
244 static __inline intrmask_t splhigh(void) { return 0; }
245 static __inline intrmask_t splimp(void) { return 0; }
246 static __inline intrmask_t splnet(void) { return 0; }
247 static __inline intrmask_t splsoftcam(void) { return 0; }
248 static __inline intrmask_t splsoftclock(void) { return 0; }
249 static __inline intrmask_t splsofttty(void) { return 0; }
250 static __inline intrmask_t splsoftvm(void) { return 0; }
251 static __inline intrmask_t splsofttq(void) { return 0; }
252 static __inline intrmask_t splstatclock(void) { return 0; }
253 static __inline intrmask_t spltty(void) { return 0; }
254 static __inline intrmask_t splvm(void) { return 0; }
255 static __inline void splx(intrmask_t ipl) { return; }
258 * Various callout lists.
261 /* Exit callout list declarations. */
262 typedef void (*exitlist_fn) __P((struct proc *procp));
264 int at_exit __P((exitlist_fn function));
265 int rm_at_exit __P((exitlist_fn function));
267 /* Fork callout list declarations. */
268 typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child,
271 int at_fork __P((forklist_fn function));
272 int rm_at_fork __P((forklist_fn function));
274 /* Exec callout list declarations. */
275 typedef void (*execlist_fn) __P((struct proc *procp));
277 int at_exec __P((execlist_fn function));
278 int rm_at_exec __P((execlist_fn function));
281 * Not exactly a callout LIST, but a callout entry.
282 * Allow an external module to define a hardware watchdog tickler.
283 * Normally a process would do this, but there are times when the
284 * kernel needs to be able to hold off the watchdog, when the process
285 * is not active, e.g., when dumping core.
287 typedef void (*watchdog_tickle_fn) __P((void));
289 extern watchdog_tickle_fn wdog_tickler;
292 * Common `proc' functions are declared here so that proc.h can be included
295 int msleep __P((void *chan, struct mtx *mtx, int pri, const char *wmesg,
297 #define tsleep(chan, pri, wmesg, timo) msleep(chan, NULL, pri, wmesg, timo)
298 void wakeup __P((void *chan));
299 void wakeup_one __P((void *chan));
302 * Common `dev_t' stuff are declared here to avoid #include poisoning
307 dev_t makedev(int x, int y);
308 udev_t dev2udev(dev_t x);
309 dev_t udev2dev(udev_t x, int b);
310 int uminor(udev_t dev);
311 int umajor(udev_t dev);
312 udev_t makeudev(int x, int y);
314 /* XXX: Should be void nanodelay(u_int nsec); */
315 void DELAY __P((int usec));
317 #endif /* !_SYS_SYSTM_H_ */