sys/sys/file2.h

   1 /*
   2  * Copyright (c) 1982, 1986, 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)file.h      8.3 (Berkeley) 1/9/95
  30  * $FreeBSD: src/sys/sys/file.h,v 1.22.2.7 2002/11/21 23:39:24 sam Exp $
  31  * $DragonFly: src/sys/sys/file2.h,v 1.8 2006/08/02 01:25:28 dillon Exp $
  32  */
  33
  34 #ifndef _SYS_FILE2_H_
  35 #define _SYS_FILE2_H_
  36
  37 #ifdef _KERNEL
  38
  39 #ifndef _SYS_FILE_H_
  40 #include <sys/file.h>
  41 #endif
  42
  43 static __inline int
  44 fo_read(
  45         struct file *fp,
  46         struct uio *uio,
  47         struct ucred *cred,
  48         int flags
  49 ) {
  50         int error;
  51
  52         fhold(fp);
  53         error = (*fp->f_ops->fo_read)(fp, uio, cred, flags);
  54         fdrop(fp);
  55         return (error);
  56 }
  57
  58 static __inline int
  59 fo_write(
  60         struct file *fp,
  61         struct uio *uio,
  62         struct ucred *cred,
  63         int flags
  64 ) {
  65         int error;
  66
  67         fhold(fp);
  68         error = (*fp->f_ops->fo_write)(fp, uio, cred, flags);
  69         fdrop(fp);
  70         return (error);
  71 }
  72
  73 static __inline int
  74 fo_ioctl(
  75         struct file *fp,
  76         u_long com,
  77         caddr_t data,
  78         struct ucred *cred,
  79         struct sysmsg *msg
  80 ) {
  81         int error;
  82
  83         fhold(fp);
  84         error = (*fp->f_ops->fo_ioctl)(fp, com, data, cred, msg);
  85         fdrop(fp);
  86         return (error);
  87 }
  88
  89 static __inline int
  90 fo_stat(struct file *fp, struct stat *sb, struct ucred *cred)
  91 {
  92         int error;
  93
  94         fhold(fp);
  95         error = (*fp->f_ops->fo_stat)(fp, sb, cred);
  96         fdrop(fp);
  97         return (error);
  98 }
  99
 100 static __inline int
 101 fo_close(struct file *fp)
 102 {
 103         return ((*fp->f_ops->fo_close)(fp));
 104 }
 105
 106 static __inline int
 107 fo_shutdown(struct file *fp, int how)
 108 {
 109         return ((*fp->f_ops->fo_shutdown)(fp, how));
 110 }
 111
 112 static __inline int
 113 fo_kqfilter(struct file *fp, struct knote *kn)
 114 {
 115         return ((*fp->f_ops->fo_kqfilter)(fp, kn));
 116 }
 117
 118 #endif /* _KERNEL */
 119
 120 #endif /* !SYS_FILE2_H */
 121