1/*	$NetBSD$	*/
2
3/*
4 * Copyright (c) 1997-2009 Erez Zadok
5 * Copyright (c) 1990 Jan-Simon Pendry
6 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
7 * Copyright (c) 1990 The Regents of the University of California.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * Jan-Simon Pendry at Imperial College, London.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 *    must display the following acknowledgment:
23 *      This product includes software developed by the University of
24 *      California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 *    may be used to endorse or promote products derived from this software
27 *    without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 *
42 * File: am-utils/amd/amfs_direct.c
43 *
44 */
45
46/*
47 * Direct file system
48 */
49
50#ifdef HAVE_CONFIG_H
51# include <config.h>
52#endif /* HAVE_CONFIG_H */
53#include <am_defs.h>
54#include <amd.h>
55
56/****************************************************************************
57 *** FORWARD DEFINITIONS                                                  ***
58 ****************************************************************************/
59static am_node *amfs_direct_readlink(am_node *mp, int *error_return);
60
61/****************************************************************************
62 *** OPS STRUCTURES                                                       ***
63 ****************************************************************************/
64am_ops amfs_direct_ops =
65{
66  "direct",
67  amfs_generic_match,
68  0,				/* amfs_direct_init */
69  amfs_toplvl_mount,
70  amfs_toplvl_umount,
71  amfs_generic_lookup_child,
72  amfs_generic_mount_child,
73  amfs_error_readdir,
74  amfs_direct_readlink,
75  amfs_generic_mounted,
76  0,				/* amfs_direct_umounted */
77  amfs_generic_find_srvr,
78  0,				/* amfs_direct_get_wchan */
79  FS_DIRECT | FS_MKMNT | FS_NOTIMEOUT | FS_BACKGROUND | FS_AMQINFO,
80#ifdef HAVE_FS_AUTOFS
81  AUTOFS_DIRECT_FS_FLAGS,
82#endif /* HAVE_FS_AUTOFS */
83};
84
85
86/****************************************************************************
87 *** FUNCTIONS                                                             ***
88 ****************************************************************************/
89
90static am_node *
91amfs_direct_readlink(am_node *mp, int *error_return)
92{
93  am_node *xp;
94  int rc = 0;
95
96  xp = next_nonerror_node(mp->am_child);
97  if (!xp) {
98    if (!mp->am_mnt->mf_private)
99      amfs_mkcacheref(mp->am_mnt);	/* XXX */
100    xp = amfs_generic_lookup_child(mp, mp->am_path + 1, &rc, VLOOK_CREATE);
101    if (xp && rc < 0)
102      xp = amfs_generic_mount_child(xp, &rc);
103  }
104  if (xp) {
105    new_ttl(xp);		/* (7/12/89) from Rein Tollevik */
106    return xp;
107  }
108  if (amd_state == Finishing)
109    rc = ENOENT;
110  *error_return = rc;
111  return 0;
112}
113