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FreeBSD/Linux Kernel Cross Reference
sys/kern/subr_xxx.c

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    1 /*      $NetBSD: subr_xxx.c,v 1.13 2003/08/07 16:31:54 agc Exp $        */
    2 
    3 /*
    4  * Copyright (c) 1982, 1986, 1991, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)subr_xxx.c  8.3 (Berkeley) 3/29/95
   32  */
   33 
   34 /*
   35  * Miscellaneous trivial functions, including many
   36  * that are often inline-expanded or done in assembler.
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: subr_xxx.c,v 1.13 2003/08/07 16:31:54 agc Exp $");
   41 
   42 #include <sys/param.h>
   43 #include <sys/systm.h>
   44 
   45 #include <machine/cpu.h>
   46 
   47 /*
   48  * Unsupported device function (e.g. writing to read-only device).
   49  */
   50 int
   51 enodev()
   52 {
   53 
   54         return (ENODEV);
   55 }
   56 
   57 /*
   58  * Unconfigured device function; driver not configured.
   59  */
   60 int
   61 enxio()
   62 {
   63 
   64         return (ENXIO);
   65 }
   66 
   67 /*
   68  * Unsupported ioctl function.
   69  */
   70 int
   71 enoioctl()
   72 {
   73 
   74         return (ENOTTY);
   75 }
   76 
   77 /*
   78  * Unsupported system function.
   79  * This is used for an otherwise-reasonable operation
   80  * that is not supported by the current system binary.
   81  */
   82 int
   83 enosys ()
   84 {
   85 
   86         return (ENOSYS);
   87 }
   88 
   89 /*
   90  * Return error for operation not supported
   91  * on a specific object or file type.
   92  */
   93 int
   94 eopnotsupp()
   95 {
   96 
   97         return (EOPNOTSUPP);
   98 }
   99 
  100 /*
  101  * Generic null operation, always returns success.
  102  */
  103 /*ARGSUSED*/
  104 int
  105 nullop(v)
  106         void *v;
  107 {
  108 
  109         return (0);
  110 }

Cache object: 9ef0158c1ec3df31bc4cd9e11b42f210


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