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.
10 * Redistribution and use in source and binary forms, with or without
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.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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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
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)) */
51 extern int cold; /* nonzero if we are doing a cold boot */
52 extern const char *panicstr; /* panic message */
53 extern int dumping; /* system is dumping */
54 extern char version[]; /* system version */
55 extern char copyright[]; /* system copyright */
57 extern int nswap; /* size of swap space */
59 extern int selwait; /* select timeout address */
61 extern u_char curpriority; /* priority of current process */
63 extern int physmem; /* physical memory */
65 extern dev_t dumpdev; /* dump device */
66 extern long dumplo; /* offset into dumpdev */
68 extern dev_t rootdev; /* root device */
69 extern dev_t rootdevs[2]; /* possible root devices */
70 extern char *rootdevnames[2]; /* names of possible root devices */
71 extern struct vnode *rootvp; /* vnode equivalent to above */
73 extern int boothowto; /* reboot flags, from console subsystem */
74 extern int bootverbose; /* nonzero to print verbose messages */
76 #ifdef INVARIANTS /* The option is always available */
77 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
79 #define KASSERT(exp,msg)
83 * General function declarations.
95 void Debugger __P((const char *msg));
96 int nullop __P((void));
97 int eopnotsupp __P((void));
98 int einval __P((void));
99 int seltrue __P((dev_t dev, int which, struct proc *p));
100 int ureadc __P((int, struct uio *));
101 void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask));
102 void *phashinit __P((int count, struct malloc_type *type, u_long *nentries));
104 void cpu_boot __P((int));
105 void cpu_rootconf __P((void));
106 void tablefull __P((const char *));
107 int addlog __P((const char *, ...)) __printflike(1, 2);
108 int kvprintf __P((char const *, void (*)(int, void*), void *, int,
109 _BSD_VA_LIST_)) __printflike(1, 0);
110 int log __P((int, const char *, ...)) __printflike(2, 3);
111 void logwakeup __P((void));
112 int printf __P((const char *, ...)) __printflike(1, 2);
113 int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
114 int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3);
115 int uprintf __P((const char *, ...)) __printflike(1, 2);
116 int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0);
117 int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0);
118 int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0);
119 int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3);
120 int sscanf __P((const char *, char const *, ...));
121 int vsscanf __P((const char *, char const *, _BSD_VA_LIST_));
122 long strtol __P((const char *, char **, int));
123 u_long strtoul __P((const char *, char **, int));
124 quad_t strtoq __P((const char *, char **, int));
125 u_quad_t strtouq __P((const char *, char **, int));
127 void bcopy __P((const void *from, void *to, size_t len));
128 void ovbcopy __P((const void *from, void *to, size_t len));
131 extern void (*bzero) __P((void *buf, size_t len));
133 void bzero __P((void *buf, size_t len));
136 void *memcpy __P((void *to, const void *from, size_t len));
138 int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
140 int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
142 int copyin __P((const void *udaddr, void *kaddr, size_t len));
143 int copyout __P((const void *kaddr, void *udaddr, size_t len));
145 int fubyte __P((const void *base));
146 int subyte __P((void *base, int byte));
147 int suibyte __P((void *base, int byte));
148 long fuword __P((const void *base));
149 int suword __P((void *base, long word));
150 int fusword __P((void *base));
151 int susword __P((void *base, int word));
153 void realitexpire __P((void *));
155 void hardclock __P((struct clockframe *frame));
156 void softclock __P((void *));
157 void statclock __P((struct clockframe *frame));
159 void startprofclock __P((struct proc *));
160 void stopprofclock __P((struct proc *));
161 void setstatclockrate __P((int hzrate));
163 /* flags for suser_xxx() */
164 #define PRISON_ROOT 1
166 int suser __P((const struct proc *));
167 int suser_xxx __P((const struct ucred *cred, const struct proc *proc,
170 char *getenv __P((char *name));
171 int getenv_int __P((char *name, int *data));
172 quad_t getenv_quad __P((char *name, quad_t *data));
173 extern char *kern_envp;
175 #ifdef APM_FIXUP_CALLTODO
176 void adjust_timeout_calltodo __P((struct timeval *time_change));
177 #endif /* APM_FIXUP_CALLTODO */
179 #include <sys/libkern.h>
181 /* Initialize the world */
182 void consinit __P((void));
183 void cpu_initclocks __P((void));
184 void nchinit __P((void));
185 void usrinfoinit __P((void));
186 void vntblinit __P((void));
188 /* Finalize the world. */
189 void shutdown_nice __P((int));
192 * Kernel to clock driver interface.
194 void inittodr __P((time_t base));
195 void resettodr __P((void));
196 void startrtclock __P((void));
199 typedef void timeout_t __P((void *)); /* timeout function type */
200 #define CALLOUT_HANDLE_INITIALIZER(handle) \
203 void callout_handle_init __P((struct callout_handle *));
204 struct callout_handle timeout __P((timeout_t *, void *, int));
205 void untimeout __P((timeout_t *, void *, struct callout_handle));
207 /* Interrupt management */
208 void spl0 __P((void));
209 intrmask_t splbio __P((void));
210 intrmask_t splcam __P((void));
211 intrmask_t splclock __P((void));
212 intrmask_t splhigh __P((void));
213 intrmask_t splimp __P((void));
214 intrmask_t splnet __P((void));
215 intrmask_t splsoftcam __P((void));
216 intrmask_t splsoftcambio __P((void));
217 intrmask_t splsoftcamnet __P((void));
218 intrmask_t splsoftclock __P((void));
219 intrmask_t splsofttty __P((void));
220 intrmask_t splsoftvm __P((void));
221 intrmask_t splsofttq __P((void));
222 intrmask_t splstatclock __P((void));
223 intrmask_t spltty __P((void));
224 intrmask_t splvm __P((void));
225 void splx __P((intrmask_t ipl));
226 intrmask_t splq __P((intrmask_t ipl));
227 void splz __P((void));
229 #if defined(__ia64__)
230 #include <machine/ipl.h>
234 * XXX It's not clear how "machine independent" these will be yet, but
235 * they are used all over the place especially in pci drivers. We would
236 * have to modify lots of drivers since <machine/cpufunc.h> no longer
237 * implicitly causes these to be defined when it #included <machine/spl.h>
239 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
240 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
241 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
242 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
243 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
246 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
247 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
248 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
251 * Various callout lists.
254 /* Exit callout list declarations. */
255 typedef void (*exitlist_fn) __P((struct proc *procp));
257 int at_exit __P((exitlist_fn function));
258 int rm_at_exit __P((exitlist_fn function));
260 /* Fork callout list declarations. */
261 typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child,
264 int at_fork __P((forklist_fn function));
265 int rm_at_fork __P((forklist_fn function));
268 * Not exactly a callout LIST, but a callout entry.
269 * Allow an external module to define a hardware watchdog tickler.
270 * Normally a process would do this, but there are times when the
271 * kernel needs to be able to hold off the watchdog, when the process
272 * is not active, e.g., when dumping core.
274 typedef void (*watchdog_tickle_fn) __P((void));
276 extern watchdog_tickle_fn wdog_tickler;
279 * Common `proc' functions are declared here so that proc.h can be included
282 int msleep __P((void *chan, struct mtx *mtx, int pri, const char *wmesg,
284 #define tsleep(chan, pri, wmesg, timo) msleep(chan, NULL, pri, wmesg, timo)
285 int asleep __P((void *chan, int pri, const char *wmesg, int timo));
286 #define await(pri, timo) mawait(NULL, pri, timo)
287 int mawait __P((struct mtx *mtx, int pri, int timo));
288 void wakeup __P((void *chan));
289 void wakeup_one __P((void *chan));
292 * Common `dev_t' stuff are declared here to avoid #include poisoning
297 dev_t makedev(int x, int y);
298 udev_t dev2udev(dev_t x);
299 dev_t udev2dev(udev_t x, int b);
300 int uminor(udev_t dev);
301 int umajor(udev_t dev);
302 udev_t makeudev(int x, int y);
304 /* XXX: Should be void nanodelay(u_int nsec); */
305 void DELAY __P((int usec));
307 #endif /* !_SYS_SYSTM_H_ */