322 lines
12 KiB
C
322 lines
12 KiB
C
/*-
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* Copyright (c) 1982, 1988, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)systm.h 8.7 (Berkeley) 3/29/95
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* $FreeBSD$
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*/
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#ifndef _SYS_SYSTM_H_
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#define _SYS_SYSTM_H_
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#include <machine/atomic.h>
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#include <machine/cpufunc.h>
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#include <sys/callout.h>
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#include <sys/queue.h>
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#include <sys/stdint.h> /* for people using printf mainly */
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extern int securelevel; /* system security level (see init(8)) */
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extern int suser_enabled; /* suser() is permitted to return 0 */
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extern int cold; /* nonzero if we are doing a cold boot */
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extern const char *panicstr; /* panic message */
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extern char version[]; /* system version */
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extern char copyright[]; /* system copyright */
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extern int kstack_pages; /* number of kernel stack pages */
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extern int uarea_pages; /* number of user struct pages */
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extern int nswap; /* size of swap space */
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extern u_int nselcoll; /* select collisions since boot */
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extern struct mtx sellock; /* select lock variable */
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extern struct cv selwait; /* select conditional variable */
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extern long physmem; /* physical memory */
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extern dev_t rootdev; /* root device */
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extern dev_t rootdevs[2]; /* possible root devices */
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extern char *rootdevnames[2]; /* names of possible root devices */
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extern struct vnode *rootvp; /* vnode equivalent to above */
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extern int boothowto; /* reboot flags, from console subsystem */
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extern int bootverbose; /* nonzero to print verbose messages */
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extern int maxusers; /* system tune hint */
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#ifdef INVARIANTS /* The option is always available */
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#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
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#else
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#define KASSERT(exp,msg)
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#endif
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#ifndef CTASSERT /* Allow lint to override */
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#define CTASSERT(x) _CTASSERT(x, __LINE__)
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#define _CTASSERT(x, y) __CTASSERT(x, y)
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#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
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#endif
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/*
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* XXX the hints declarations are even more misplaced than most declarations
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* in this file, since they are needed in one file (per arch) and only used
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* in two files.
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* XXX most of these variables should be const.
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*/
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extern int envmode;
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extern int hintmode; /* 0 = off. 1 = config, 2 = fallback */
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extern int dynamic_kenv;
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extern struct sx kenv_lock;
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extern char *kern_envp;
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extern char static_env[];
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extern char static_hints[]; /* by config for now */
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extern char **kenvp;
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/*
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* General function declarations.
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*/
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struct clockframe;
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struct malloc_type;
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struct mtx;
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struct proc;
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struct kse;
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struct socket;
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struct thread;
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struct tty;
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struct ucred;
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struct uio;
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struct _jmp_buf;
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int setjmp(struct _jmp_buf *);
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void longjmp(struct _jmp_buf *, int) __dead2;
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void Debugger(const char *msg) __nonnull(1);
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int dumpstatus(vm_offset_t addr, off_t count);
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int nullop(void);
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int eopnotsupp(void);
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int seltrue(dev_t dev, int which, struct thread *td);
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int ureadc(int, struct uio *);
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void hashdestroy(void *, struct malloc_type *, u_long);
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void *hashinit(int count, struct malloc_type *type, u_long *hashmask);
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void *phashinit(int count, struct malloc_type *type, u_long *nentries);
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#ifdef RESTARTABLE_PANICS
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void panic(const char *, ...) __printflike(1, 2);
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#else
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void panic(const char *, ...) __dead2 __printflike(1, 2);
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#endif
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void backtrace(void);
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void cpu_boot(int);
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void cpu_rootconf(void);
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extern uint32_t crc32_tab[];
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uint32_t crc32(const void *buf, size_t size);
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void critical_enter(void);
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void critical_exit(void);
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void init_param1(void);
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void init_param2(long physpages);
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void init_param3(long kmempages);
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void tablefull(const char *);
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int kvprintf(char const *, void (*)(int, void*), void *, int,
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__va_list) __printflike(1, 0);
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void log(int, const char *, ...) __printflike(2, 3);
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void log_console(struct uio *);
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int printf(const char *, ...) __printflike(1, 2);
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int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
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int sprintf(char *buf, const char *, ...) __printflike(2, 3);
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int uprintf(const char *, ...) __printflike(1, 2);
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int vprintf(const char *, __va_list) __printflike(1, 0);
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int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0);
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int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0);
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int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0);
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int ttyprintf(struct tty *, const char *, ...) __printflike(2, 3);
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int sscanf(const char *, char const *, ...) __nonnull(1) __nonnull(2);
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int vsscanf(const char *, char const *, __va_list) __nonnull(1) __nonnull(2);
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long strtol(const char *, char **, int) __nonnull(1);
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u_long strtoul(const char *, char **, int) __nonnull(1);
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quad_t strtoq(const char *, char **, int) __nonnull(1);
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u_quad_t strtouq(const char *, char **, int) __nonnull(1);
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void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4);
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#define ovbcopy(f, t, l) bcopy((f), (t), (l))
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void bcopy(const void *from, void *to, size_t len) __nonnull(1) __nonnull(2);
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void bzero(void *buf, size_t len) __nonnull(1);
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void *memcpy(void *to, const void *from, size_t len) __nonnull(1) __nonnull(2);
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int copystr(const void *kfaddr, void *kdaddr, size_t len,
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size_t *lencopied) __nonnull(1) __nonnull(2);
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int copyinstr(const void *udaddr, void *kaddr, size_t len,
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size_t *lencopied) __nonnull(1) __nonnull(2);
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int copyin(const void *udaddr, void *kaddr, size_t len) __nonnull(1) __nonnull(2);
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int copyout(const void *kaddr, void *udaddr, size_t len) __nonnull(1) __nonnull(2);
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int fubyte(const void *base);
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long fuword(const void *base);
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int fuword16(void *base);
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int32_t fuword32(const void *base);
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int64_t fuword64(const void *base);
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int subyte(void *base, int byte);
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int suword(void *base, long word);
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int suword16(void *base, int word);
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int suword32(void *base, int32_t word);
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int suword64(void *base, int64_t word);
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intptr_t casuptr(intptr_t *p, intptr_t old, intptr_t new);
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void realitexpire(void *);
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void hardclock(struct clockframe *frame);
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void hardclock_process(struct clockframe *frame);
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void softclock(void *);
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void statclock(struct clockframe *frame);
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void profclock(struct clockframe *frame);
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void startprofclock(struct proc *);
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void stopprofclock(struct proc *);
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void cpu_startprofclock(void);
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void cpu_stopprofclock(void);
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/* flags for suser() and suser_cred() */
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#define PRISON_ROOT 1
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int suser(struct thread *td);
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int suser_cred(struct ucred *cred, int flag);
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int cr_cansee(struct ucred *u1, struct ucred *u2);
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int cr_canseesocket(struct ucred *cred, struct socket *so);
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char *getenv(const char *name);
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void freeenv(char *env);
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int getenv_int(const char *name, int *data);
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int getenv_string(const char *name, char *data, int size);
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int getenv_quad(const char *name, quad_t *data);
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int setenv(const char *name, const char *value);
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int unsetenv(const char *name);
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int testenv(const char *name);
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#ifdef APM_FIXUP_CALLTODO
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struct timeval;
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void adjust_timeout_calltodo(struct timeval *time_change);
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#endif /* APM_FIXUP_CALLTODO */
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#include <sys/libkern.h>
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/* Initialize the world */
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void consinit(void);
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void cpu_initclocks(void);
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void usrinfoinit(void);
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/* Finalize the world. */
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void shutdown_nice(int);
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/*
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* Kernel to clock driver interface.
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*/
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void inittodr(time_t base);
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void resettodr(void);
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void startrtclock(void);
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/* Timeouts */
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typedef void timeout_t(void *); /* timeout function type */
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#define CALLOUT_HANDLE_INITIALIZER(handle) \
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{ NULL }
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void callout_handle_init(struct callout_handle *);
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struct callout_handle timeout(timeout_t *, void *, int);
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void untimeout(timeout_t *, void *, struct callout_handle);
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caddr_t kern_timeout_callwheel_alloc(caddr_t v);
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void kern_timeout_callwheel_init(void);
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/* Stubs for obsolete functions that used to be for interrupt management */
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static __inline void spl0(void) { return; }
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static __inline intrmask_t splbio(void) { return 0; }
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static __inline intrmask_t splcam(void) { return 0; }
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static __inline intrmask_t splclock(void) { return 0; }
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static __inline intrmask_t splhigh(void) { return 0; }
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static __inline intrmask_t splimp(void) { return 0; }
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static __inline intrmask_t splnet(void) { return 0; }
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static __inline intrmask_t splsoftcam(void) { return 0; }
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static __inline intrmask_t splsoftclock(void) { return 0; }
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static __inline intrmask_t splsofttty(void) { return 0; }
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static __inline intrmask_t splsoftvm(void) { return 0; }
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static __inline intrmask_t splsofttq(void) { return 0; }
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static __inline intrmask_t splstatclock(void) { return 0; }
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static __inline intrmask_t spltty(void) { return 0; }
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static __inline intrmask_t splvm(void) { return 0; }
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static __inline void splx(intrmask_t ipl __unused) { return; }
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/*
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* Various callout lists.
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*/
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/*
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* Not exactly a callout LIST, but a callout entry.
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* Allow an external module to define a hardware watchdog tickler.
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* Normally a process would do this, but there are times when the
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* kernel needs to be able to hold off the watchdog, when the process
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* is not active, e.g., when dumping core.
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*/
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typedef void (*watchdog_tickle_fn)(void);
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extern watchdog_tickle_fn wdog_tickler;
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/*
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* Common `proc' functions are declared here so that proc.h can be included
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* less often.
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*/
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int msleep(void *chan, struct mtx *mtx, int pri, const char *wmesg,
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int timo);
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void abortsleep(struct thread *td);
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#define tsleep(chan, pri, wmesg, timo) msleep(chan, NULL, pri, wmesg, timo)
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void wakeup(void *chan) __nonnull(1);
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void wakeup_one(void *chan) __nonnull(1);
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/*
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* Common `dev_t' stuff are declared here to avoid #include poisoning
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*/
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int major(dev_t x);
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int minor(dev_t x);
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dev_t makedev(int x, int y);
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udev_t dev2udev(dev_t x);
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dev_t udev2dev(udev_t x, int b);
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int uminor(udev_t dev);
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int umajor(udev_t dev);
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udev_t makeudev(int x, int y);
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/* XXX: Should be void nanodelay(u_int nsec); */
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void DELAY(int usec);
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#endif /* !_SYS_SYSTM_H_ */
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