/*-
* Copyright (c) 1982, 1988, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)systm.h 8.7 (Berkeley) 3/29/95
* $FreeBSD$
*/
#ifndef _SYS_SYSTM_H_
#define _SYS_SYSTM_H_
#include <machine/atomic.h>
#include <machine/cpufunc.h>
#include <sys/callout.h>
#include <sys/queue.h>
#include <sys/stdint.h> /* for people using printf mainly */
extern int securelevel; /* system security level (see init(8)) */
extern int suser_enabled; /* suser() is permitted to return 0 */
extern int cold; /* nonzero if we are doing a cold boot */
extern const char *panicstr; /* panic message */
extern char version[]; /* system version */
extern char copyright[]; /* system copyright */
extern int kstack_pages; /* number of kernel stack pages */
extern int uarea_pages; /* number of user struct pages */
extern int nswap; /* size of swap space */
extern u_int nselcoll; /* select collisions since boot */
extern struct mtx sellock; /* select lock variable */
extern struct cv selwait; /* select conditional variable */
extern long physmem; /* physical memory */
extern dev_t rootdev; /* root device */
extern dev_t rootdevs[2]; /* possible root devices */
extern char *rootdevnames[2]; /* names of possible root devices */
extern struct vnode *rootvp; /* vnode equivalent to above */
extern int boothowto; /* reboot flags, from console subsystem */
extern int bootverbose; /* nonzero to print verbose messages */
extern int maxusers; /* system tune hint */
#ifdef INVARIANTS /* The option is always available */
#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
#else
#define KASSERT(exp,msg)
#endif
#ifndef CTASSERT /* Allow lint to override */
#define CTASSERT(x) _CTASSERT(x, __LINE__)
#define _CTASSERT(x, y) __CTASSERT(x, y)
#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
#endif
/*
* XXX the hints declarations are even more misplaced than most declarations
* in this file, since they are needed in one file (per arch) and only used
* in two files.
* XXX most of these variables should be const.
*/
extern int envmode;
extern int hintmode; /* 0 = off. 1 = config, 2 = fallback */
extern int dynamic_kenv;
extern struct sx kenv_lock;
extern char *kern_envp;
extern char static_env[];
extern char static_hints[]; /* by config for now */
extern char **kenvp;
/*
* General function declarations.
*/
struct clockframe;
struct malloc_type;
struct mtx;
struct proc;
struct kse;
struct socket;
struct thread;
struct tty;
struct ucred;
struct uio;
struct _jmp_buf;
int setjmp(struct _jmp_buf *);
void longjmp(struct _jmp_buf *, int) __dead2;
void Debugger(const char *msg);
int dumpstatus(vm_offset_t addr, off_t count);
int nullop(void);
int eopnotsupp(void);
int seltrue(dev_t dev, int which, struct thread *td);
int ureadc(int, struct uio *);
void hashdestroy(void *, struct malloc_type *, u_long);
void *hashinit(int count, struct malloc_type *type, u_long *hashmask);
void *phashinit(int count, struct malloc_type *type, u_long *nentries);
#ifdef RESTARTABLE_PANICS
void panic(const char *, ...) __printflike(1, 2);
#else
void panic(const char *, ...) __dead2 __printflike(1, 2);
#endif
void backtrace(void);
void cpu_boot(int);
void cpu_rootconf(void);
extern uint32_t crc32_tab[];
uint32_t crc32(const void *buf, size_t size);
void critical_enter(void);
void critical_exit(void);
void init_param1(void);
void init_param2(long physpages);
void tablefull(const char *);
int kvprintf(char const *, void (*)(int, void*), void *, int,
__va_list) __printflike(1, 0);
void log(int, const char *, ...) __printflike(2, 3);
void log_console(struct uio *);
int printf(const char *, ...) __printflike(1, 2);
int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
int sprintf(char *buf, const char *, ...) __printflike(2, 3);
int uprintf(const char *, ...) __printflike(1, 2);
int vprintf(const char *, __va_list) __printflike(1, 0);
int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0);
int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0);
int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0);
int ttyprintf(struct tty *, const char *, ...) __printflike(2, 3);
int sscanf(const char *, char const *, ...);
int vsscanf(const char *, char const *, __va_list);
long strtol(const char *, char **, int);
u_long strtoul(const char *, char **, int);
quad_t strtoq(const char *, char **, int);
u_quad_t strtouq(const char *, char **, int);
void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4);
#define ovbcopy(f, t, l) bcopy((f), (t), (l))
void bcopy(const void *from, void *to, size_t len);
void bzero(void *buf, size_t len);
void *memcpy(void *to, const void *from, size_t len);
int copystr(const void *kfaddr, void *kdaddr, size_t len,
size_t *lencopied);
int copyinstr(const void *udaddr, void *kaddr, size_t len,
size_t *lencopied);
int copyin(const void *udaddr, void *kaddr, size_t len);
int copyout(const void *kaddr, void *udaddr, size_t len);
int fubyte(const void *base);
long fuword(const void *base);
int fuword16(void *base);
int32_t fuword32(const void *base);
int64_t fuword64(const void *base);
int subyte(void *base, int byte);
int suword(void *base, long word);
int suword16(void *base, int word);
int suword32(void *base, int32_t word);
int suword64(void *base, int64_t word);
intptr_t casuptr(intptr_t *p, intptr_t old, intptr_t new);
void realitexpire(void *);
void hardclock(struct clockframe *frame);
void hardclock_process(struct clockframe *frame);
void softclock(void *);
void statclock(struct clockframe *frame);
void profclock(struct clockframe *frame);
void startprofclock(struct proc *);
void stopprofclock(struct proc *);
void cpu_startprofclock(void);
void cpu_stopprofclock(void);
/* flags for suser() and suser_cred() */
#define PRISON_ROOT 1
int suser(struct thread *td);
int suser_cred(struct ucred *cred, int flag);
int cr_cansee(struct ucred *u1, struct ucred *u2);
int cr_canseesocket(struct ucred *cred, struct socket *so);
char *getenv(const char *name);
void freeenv(char *env);
int getenv_int(const char *name, int *data);
int getenv_string(const char *name, char *data, int size);
int getenv_quad(const char *name, quad_t *data);
int setenv(const char *name, const char *value);
int unsetenv(const char *name);
int testenv(const char *name);
#ifdef APM_FIXUP_CALLTODO
struct timeval;
void adjust_timeout_calltodo(struct timeval *time_change);
#endif /* APM_FIXUP_CALLTODO */
#include <sys/libkern.h>
/* Initialize the world */
void consinit(void);
void cpu_initclocks(void);
void usrinfoinit(void);
/* Finalize the world. */
void shutdown_nice(int);
/*
* Kernel to clock driver interface.
*/
void inittodr(time_t base);
void resettodr(void);
void startrtclock(void);
/* Timeouts */
typedef void timeout_t(void *); /* timeout function type */
#define CALLOUT_HANDLE_INITIALIZER(handle) \
{ NULL }
void callout_handle_init(struct callout_handle *);
struct callout_handle timeout(timeout_t *, void *, int);
void untimeout(timeout_t *, void *, struct callout_handle);
caddr_t kern_timeout_callwheel_alloc(caddr_t v);
void kern_timeout_callwheel_init(void);
/* Stubs for obsolete functions that used to be for interrupt management */
static __inline void spl0(void) { return; }
static __inline intrmask_t splbio(void) { return 0; }
static __inline intrmask_t splcam(void) { return 0; }
static __inline intrmask_t splclock(void) { return 0; }
static __inline intrmask_t splhigh(void) { return 0; }
static __inline intrmask_t splimp(void) { return 0; }
static __inline intrmask_t splnet(void) { return 0; }
static __inline intrmask_t splsoftcam(void) { return 0; }
static __inline intrmask_t splsoftclock(void) { return 0; }
static __inline intrmask_t splsofttty(void) { return 0; }
static __inline intrmask_t splsoftvm(void) { return 0; }
static __inline intrmask_t splsofttq(void) { return 0; }
static __inline intrmask_t splstatclock(void) { return 0; }
static __inline intrmask_t spltty(void) { return 0; }
static __inline intrmask_t splvm(void) { return 0; }
static __inline void splx(intrmask_t ipl __unused) { return; }
/*
* Various callout lists.
*/
/*
* Not exactly a callout LIST, but a callout entry.
* Allow an external module to define a hardware watchdog tickler.
* Normally a process would do this, but there are times when the
* kernel needs to be able to hold off the watchdog, when the process
* is not active, e.g., when dumping core.
*/
typedef void (*watchdog_tickle_fn)(void);
extern watchdog_tickle_fn wdog_tickler;
/*
* Common `proc' functions are declared here so that proc.h can be included
* less often.
*/
int msleep(void *chan, struct mtx *mtx, int pri, const char *wmesg,
int timo);
void abortsleep(struct thread *td);
#define tsleep(chan, pri, wmesg, timo) msleep(chan, NULL, pri, wmesg, timo)
void wakeup(void *chan);
void wakeup_one(void *chan);
/*
* Common `dev_t' stuff are declared here to avoid #include poisoning
*/
int major(dev_t x);
int minor(dev_t x);
dev_t makedev(int x, int y);
udev_t dev2udev(dev_t x);
dev_t udev2dev(udev_t x, int b);
int uminor(udev_t dev);
int umajor(udev_t dev);
udev_t makeudev(int x, int y);
/* XXX: Should be void nanodelay(u_int nsec); */
void DELAY(int usec);
#endif /* !_SYS_SYSTM_H_ */
