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suspend.c revision 1.7 
      1 /*	$NetBSD: suspend.c,v 1.7 2007/11/12 16:39:35 pooka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2007  Antti Kantee.  All Rights Reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 #if !defined(lint)
     30 __RCSID("$NetBSD: suspend.c,v 1.7 2007/11/12 16:39:35 pooka Exp $");
     31 #endif /* !lint */
     32 
     33 /*
     34  * File system suspension
     35  */
     36 
     37 #include <sys/types.h>
     38 
     39 #include <dev/puttervar.h>
     40 
     41 #include <assert.h>
     42 #include <errno.h>
     43 #include <puffs.h>
     44 #include <stdio.h>
     45 #include <unistd.h>
     46 
     47 #include "puffs_priv.h"
     48 
     49 /*ARGSUSED*/
     50 int
     51 puffs_fs_suspend(struct puffs_usermount *pu)
     52 {
     53 	struct puffs_req preq;
     54 	size_t n;
     55 
     56 	preq.preq_pth.pth_framelen = sizeof(struct putter_hdr);
     57 	preq.preq_opclass = PUFFSOP_SUSPEND;
     58 
     59 	n = write(pu->pu_fd, &preq, sizeof(preq));
     60 
     61 	/* XXX */
     62 	assert(n == sizeof(preq));
     63 	return 0;
     64 }
     65