/* $NetBSD: amfs_union.c,v 1.1.1.1 2000/06/07 00:52:22 dogcow Exp $ */ /* * Copyright (c) 1997-2000 Erez Zadok * Copyright (c) 1990 Jan-Simon Pendry * Copyright (c) 1990 Imperial College of Science, Technology & Medicine * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Jan-Simon Pendry at Imperial College, London. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgment: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * %W% (Berkeley) %G% * * Id: amfs_union.c,v 1.3 2000/01/12 16:44:16 ezk Exp * */ /* * Union automounter file system */ #ifdef HAVE_CONFIG_H # include #endif /* HAVE_CONFIG_H */ #include #include /**************************************************************************** *** FORWARD DEFINITIONS *** ****************************************************************************/ static void amfs_union_mounted(mntfs *mf); /**************************************************************************** *** OPS STRUCTURES *** ****************************************************************************/ am_ops amfs_union_ops = { "union", amfs_auto_match, 0, /* amfs_auto_init */ amfs_toplvl_mount, 0, amfs_toplvl_umount, 0, amfs_auto_lookuppn, amfs_auto_readdir, 0, /* amfs_toplvl_readlink */ amfs_union_mounted, 0, /* amfs_toplvl_umounted */ find_amfs_auto_srvr, FS_MKMNT | FS_NOTIMEOUT | FS_BACKGROUND | FS_AMQINFO | FS_DIRECTORY }; /* * Create a reference to a union'ed entry * XXX: this function may not be used anywhere... */ static int create_amfs_union_node(char *dir, voidp arg) { if (!STREQ(dir, "/defaults")) { int error = 0; (void) amfs_toplvl_ops.lookuppn(arg, dir, &error, VLOOK_CREATE); if (error > 0) { errno = error; /* XXX */ plog(XLOG_ERROR, "Could not mount %s: %m", dir); } return error; } return 0; } static void amfs_union_mounted(mntfs *mf) { int i; amfs_auto_mkcacheref(mf); /* * Having made the union mount point, * populate all the entries... */ for (i = 0; i <= last_used_map; i++) { am_node *mp = exported_ap[i]; if (mp && mp->am_mnt == mf) { /* return value from create_amfs_union_node is ignored by mapc_keyiter */ (void) mapc_keyiter((mnt_map *) mp->am_mnt->mf_private, (void (*)(char *, voidp)) create_amfs_union_node, mp); break; } } }