sys/vfs/procfs/procfs_note.c

   1 /*
   2  * Copyright (c) 1993 Jan-Simon Pendry
   3  * Copyright (c) 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * This code is derived from software contributed to Berkeley by
   7  * Jan-Simon Pendry.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by the University of
  20  *      California, Berkeley and its contributors.
  21  * 4. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  *      @(#)procfs_note.c       8.2 (Berkeley) 1/21/94
  38  *
  39  * $FreeBSD: src/sys/miscfs/procfs/procfs_note.c,v 1.6 1999/08/28 00:46:55 peter Exp $
  40  * $DragonFly: src/sys/vfs/procfs/procfs_note.c,v 1.5 2007/02/19 01:14:24 corecode Exp $
  41  */
  42
  43 #include <sys/param.h>
  44 #include <sys/vnode.h>
  45 #include <vfs/procfs/procfs.h>
  46
  47 int
  48 procfs_donote(struct proc *curp, struct lwp *lp, struct pfsnode *pfs,
  49               struct uio *uio)
  50 {
  51         int xlen;
  52         int error;
  53         char note[PROCFS_NOTELEN+1];
  54
  55         if (uio->uio_rw != UIO_WRITE)
  56                 return (EINVAL);
  57
  58         xlen = PROCFS_NOTELEN;
  59         error = vfs_getuserstr(uio, note, &xlen);
  60         if (error)
  61                 return (error);
  62
  63         /* send to process's notify function */
  64         return (EOPNOTSUPP);
  65 }