FreeBSD/Linux Kernel Cross Reference
sys/sys/kprintf.h

     /*      $NetBSD: kprintf.h,v 1.13 2019/01/07 13:09:47 martin Exp $      */
     
     /*-
      * Copyright (c) 1986, 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. 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.
     */
    
    #ifndef _SYS_KPRINTF_H_
    #define _SYS_KPRINTF_H_
    
    #include <sys/stdarg.h>
    
    /*
     * Implementation internals of the kernel printf.  Exposing them here
     * allows other subsystems to implement precisely the printf semantics
     * they need.
     */
    
    /* max size buffer kprintf needs to print quad_t [size in base 8 + \0] */
    #define KPRINTF_BUFSIZE         (sizeof(quad_t) * NBBY / 3 + 2)
    
    /* flags for kprintf */
    #define TOCONS          0x0001  /* to the console */
    #define TOTTY           0x0002  /* to the process' tty */
    #define TOLOG           0x0004  /* to the kernel message buffer */
    #define TOBUFONLY       0x0008  /* to the buffer (only) [for snprintf] */
    #define TODDB           0x0010  /* to ddb console */
    #define NOLOCK          0x1000  /* don't acquire a tty lock */
    #define NOTSTAMP        0x2000  /* no time stamp on console */
    
    void    kprintf_init(void);
    void    kprintf_init_callout(void);
    void    kprintf_lock(void);
    void    kprintf_unlock(void);
    /*
     * NOTE: the kprintf mutex must be held when these functions are called!
     */
    int     kprintf(const char *, int, void *, char *, va_list);
    void    klogpri(int);
    
    #endif /* _SYS_KPRINTF_H_ */

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