1 /* $NetBSD: amfs_direct.c,v 1.1.1.3 2015/01/17 16:34:15 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2014 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. 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 * 38 * File: am-utils/amd/amfs_direct.c 39 * 40 */ 41 42 /* 43 * Direct file system 44 */ 45 46 #ifdef HAVE_CONFIG_H 47 # include <config.h> 48 #endif /* HAVE_CONFIG_H */ 49 #include <am_defs.h> 50 #include <amd.h> 51 52 /**************************************************************************** 53 *** FORWARD DEFINITIONS *** 54 ****************************************************************************/ 55 static am_node *amfs_direct_readlink(am_node *mp, int *error_return); 56 57 /**************************************************************************** 58 *** OPS STRUCTURES *** 59 ****************************************************************************/ 60 am_ops amfs_direct_ops = 61 { 62 "direct", 63 amfs_generic_match, 64 0, /* amfs_direct_init */ 65 amfs_toplvl_mount, 66 amfs_toplvl_umount, 67 amfs_generic_lookup_child, 68 amfs_generic_mount_child, 69 amfs_error_readdir, 70 amfs_direct_readlink, 71 amfs_generic_mounted, 72 0, /* amfs_direct_umounted */ 73 amfs_generic_find_srvr, 74 0, /* amfs_direct_get_wchan */ 75 FS_DIRECT | FS_MKMNT | FS_NOTIMEOUT | FS_BACKGROUND | FS_AMQINFO, 76 #ifdef HAVE_FS_AUTOFS 77 AUTOFS_DIRECT_FS_FLAGS, 78 #endif /* HAVE_FS_AUTOFS */ 79 }; 80 81 82 /**************************************************************************** 83 *** FUNCTIONS *** 84 ****************************************************************************/ 85 86 static am_node * 87 amfs_direct_readlink(am_node *mp, int *error_return) 88 { 89 am_node *xp; 90 int rc = 0; 91 92 xp = next_nonerror_node(mp->am_child); 93 if (!xp) { 94 if (!mp->am_al->al_mnt->mf_private) 95 amfs_mkcacheref(mp->am_al->al_mnt); 96 xp = amfs_generic_lookup_child(mp, mp->am_path + 1, &rc, VLOOK_CREATE); 97 if (xp && rc < 0) 98 xp = amfs_generic_mount_child(xp, &rc); 99 } 100 if (xp) { 101 new_ttl(xp); /* (7/12/89) from Rein Tollevik */ 102 return xp; 103 } 104 if (amd_state == Finishing) 105 rc = ENOENT; 106 *error_return = rc; 107 return 0; 108 } 109