FreeBSD/Linux Kernel Cross Reference
sys/sys/file2.h

     /*
      * Copyright (c) 1982, 1986, 1989, 1993
      *      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.
     *
     *      @(#)file.h      8.3 (Berkeley) 1/9/95
     * $FreeBSD: src/sys/sys/file.h,v 1.22.2.7 2002/11/21 23:39:24 sam Exp $
     * $DragonFly: src/sys/sys/file2.h,v 1.8 2006/08/02 01:25:28 dillon Exp $
     */
    
    #ifndef _SYS_FILE2_H_
    #define _SYS_FILE2_H_
    
    #ifdef _KERNEL
    
    #ifndef _SYS_TYPES_H_
    #include <sys/file.h>
    #endif
    
    static __inline int
    fo_read(
            struct file *fp,
            struct uio *uio,
            struct ucred *cred,
            int flags
    ) {
            int error;
    
            fhold(fp);
            error = (*fp->f_ops->fo_read)(fp, uio, cred, flags);
            fdrop(fp);
            return (error);
    }
    
    static __inline int
    fo_write(
            struct file *fp,
            struct uio *uio,
            struct ucred *cred,
            int flags
    ) {
            int error;
    
            fhold(fp);
            error = (*fp->f_ops->fo_write)(fp, uio, cred, flags);
            fdrop(fp);
            return (error);
    }
    
    static __inline int
    fo_ioctl(
            struct file *fp,
            u_long com,
            caddr_t data,
            struct ucred *cred,
            struct sysmsg *msg
    ) {
            int error;
    
            fhold(fp);
            error = (*fp->f_ops->fo_ioctl)(fp, com, data, cred, msg);
            fdrop(fp);
            return (error);
    }
    
    static __inline int
    fo_stat(struct file *fp, struct stat *sb, struct ucred *cred)
    {
            int error;
    
            fhold(fp);
            error = (*fp->f_ops->fo_stat)(fp, sb, cred);
           fdrop(fp);
           return (error);
   }
   
   static __inline int
   fo_close(struct file *fp)
   {
           return ((*fp->f_ops->fo_close)(fp));
   }
   
   static __inline int
   fo_shutdown(struct file *fp, int how)
   {
           return ((*fp->f_ops->fo_shutdown)(fp, how));
   }
   
   static __inline int
   fo_kqfilter(struct file *fp, struct knote *kn)
   {
           return ((*fp->f_ops->fo_kqfilter)(fp, kn));
   }
   
   #endif /* _KERNEL */
   
   #endif /* !SYS_FILE2_H */
   

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