1/* 2 * Copyright (c) 1997-2006 Erez Zadok 3 * Copyright (c) 1990 Jan-Simon Pendry 4 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Jan-Simon Pendry at Imperial College, London. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgment: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * 40 * File: am-utils/amd/amfs_direct.c 41 * 42 */ 43 44/* 45 * Direct file system 46 */ 47 48#ifdef HAVE_CONFIG_H 49# include <config.h> 50#endif /* HAVE_CONFIG_H */ 51#include <am_defs.h> 52#include <amd.h> 53 54/**************************************************************************** 55 *** FORWARD DEFINITIONS *** 56 ****************************************************************************/ 57static am_node *amfs_direct_readlink(am_node *mp, int *error_return); 58 59/**************************************************************************** 60 *** OPS STRUCTURES *** 61 ****************************************************************************/ 62am_ops amfs_direct_ops = 63{ 64 "direct", 65 amfs_generic_match, 66 0, /* amfs_direct_init */ 67 amfs_toplvl_mount, 68 amfs_toplvl_umount, 69 amfs_generic_lookup_child, 70 amfs_generic_mount_child, 71 amfs_error_readdir, 72 amfs_direct_readlink, 73 amfs_generic_mounted, 74 0, /* amfs_direct_umounted */ 75 amfs_generic_find_srvr, 76 0, /* amfs_direct_get_wchan */ 77 FS_DIRECT | FS_MKMNT | FS_NOTIMEOUT | FS_BACKGROUND | FS_AMQINFO, 78#ifdef HAVE_FS_AUTOFS 79 AUTOFS_DIRECT_FS_FLAGS, 80#endif /* HAVE_FS_AUTOFS */ 81}; 82 83 84/**************************************************************************** 85 *** FUNCTIONS *** 86 ****************************************************************************/ 87 88static am_node * 89amfs_direct_readlink(am_node *mp, int *error_return) 90{ 91 am_node *xp; 92 int rc = 0; 93 94 xp = next_nonerror_node(mp->am_child); 95 if (!xp) { 96 if (!mp->am_mnt->mf_private) 97 amfs_mkcacheref(mp->am_mnt); /* XXX */ 98 xp = amfs_generic_lookup_child(mp, mp->am_path + 1, &rc, VLOOK_CREATE); 99 if (xp && rc < 0) 100 xp = amfs_generic_mount_child(xp, &rc); 101 } 102 if (xp) { 103 new_ttl(xp); /* (7/12/89) from Rein Tollevik */ 104 return xp; 105 } 106 if (amd_state == Finishing) 107 rc = ENOENT; 108 *error_return = rc; 109 return 0; 110} 111