usr/src/sys/sys/systm.h

/*-
 * Copyright (c) 1982, 1988, 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * 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     7.17 (Berkeley) 5/25/91
 */

extern char *panicstr;          /* panic message */
extern char version[];          /* system version */
extern char copyright[];        /* system copyright */

extern int nblkdev;             /* number of entries in bdevsw */
extern int nchrdev;             /* number of entries in cdevsw */
extern int nswdev;              /* number of swap devices */
extern int nswap;               /* size of swap space */

extern int selwait;             /* select timeout address */

extern u_char curpri;           /* priority of current process */

extern int maxmem;              /* max memory per process */
extern int physmem;             /* physical memory */

extern dev_t dumpdev;           /* dump device */
extern long dumplo;             /* offset into dumpdev */

extern dev_t rootdev;           /* root device */
extern struct vnode *rootvp;    /* vnode equivalent to above */

extern dev_t swapdev;           /* swapping device */
extern struct vnode *swapdev_vp;/* vnode equivalent to above */

extern struct sysent {          /* system call table */
        int     sy_narg;        /* number of arguments */
        int     (*sy_call)();   /* implementing function */
} sysent[];

extern int boothowto;           /* reboot flags, from console subsystem */
#ifdef  KADB
extern char *bootesym;          /* end of symbol info from boot */
#endif

/* casts to keep lint happy */
#define insque(q,p)     _insque((caddr_t)q,(caddr_t)p)
#define remque(q)       _remque((caddr_t)q)

/*
 * General function declarations.
 */
int     nullop __P((void));
int     enodev __P((void));
int     enoioctl __P((void));
int     enxio __P((void));
int     eopnotsupp __P((void));
int     seltrue __P((dev_t dev, int which, struct proc *p));

void    panic __P((char *));
void    tablefull __P((char *));
void    addlog __P((const char *, ...));
void    log __P((int, const char *, ...));
void    printf __P((const char *, ...));
int     sprintf __P((char *buf, const char *, ...));
void    ttyprintf __P((struct tty *, const char *, ...));

void    bcopy __P((void *from, void *to, u_int len));
void    ovbcopy __P((void *from, void *to, u_int len));
void    bzero __P((void *buf, u_int len));
int     bcmp __P((void *str1, void *str2, u_int len));
int     strlen __P((char *string));

int     copystr __P((void *kfaddr, void *kdaddr, u_int len, u_int *done));
int     copyinstr __P((void *udaddr, void *kaddr, u_int len, u_int *done));
int     copyoutstr __P((void *kaddr, void *udaddr, u_int len, u_int *done));
int     copyin __P((void *udaddr, void *kaddr, u_int len));
int     copyout __P((void *kaddr, void *udaddr, u_int len));

int     fubyte __P((void *base));
#ifdef notdef
int     fuibyte __P((void *base));
#endif
int     subyte __P((void *base, int byte));
int     suibyte __P((void *base, int byte));
int     fuword __P((void *base));
int     fuiword __P((void *base));
int     suword __P((void *base, int word));
int     suiword __P((void *base, int word));

int     scanc __P((unsigned size, u_char *cp, u_char *table, int mask));
int     skpc __P((int mask, int size, char *cp));
int     locc __P((int mask, char *cp, unsigned size));
int     ffs __P((long value));