138494Sobrien/* 2174294Sobrien * Copyright (c) 1997-2006 Erez Zadok 338494Sobrien * Copyright (c) 1990 Jan-Simon Pendry 438494Sobrien * Copyright (c) 1990 Imperial College of Science, Technology & Medicine 538494Sobrien * Copyright (c) 1990 The Regents of the University of California. 638494Sobrien * All rights reserved. 738494Sobrien * 838494Sobrien * This code is derived from software contributed to Berkeley by 938494Sobrien * Jan-Simon Pendry at Imperial College, London. 1038494Sobrien * 1138494Sobrien * Redistribution and use in source and binary forms, with or without 1238494Sobrien * modification, are permitted provided that the following conditions 1338494Sobrien * are met: 1438494Sobrien * 1. Redistributions of source code must retain the above copyright 1538494Sobrien * notice, this list of conditions and the following disclaimer. 1638494Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1738494Sobrien * notice, this list of conditions and the following disclaimer in the 1838494Sobrien * documentation and/or other materials provided with the distribution. 1938494Sobrien * 3. All advertising materials mentioning features or use of this software 2042629Sobrien * must display the following acknowledgment: 2138494Sobrien * This product includes software developed by the University of 2238494Sobrien * California, Berkeley and its contributors. 2338494Sobrien * 4. Neither the name of the University nor the names of its contributors 2438494Sobrien * may be used to endorse or promote products derived from this software 2538494Sobrien * without specific prior written permission. 2638494Sobrien * 2738494Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2838494Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2938494Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 3038494Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 3138494Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3238494Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3338494Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3438494Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3538494Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3638494Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3738494Sobrien * SUCH DAMAGE. 3838494Sobrien * 3938494Sobrien * 40174294Sobrien * File: am-utils/amd/amfs_auto.c 4138494Sobrien * 4238494Sobrien */ 4338494Sobrien 4438494Sobrien/* 4538494Sobrien * Automount file system 4638494Sobrien */ 4738494Sobrien 4838494Sobrien#ifdef HAVE_CONFIG_H 4938494Sobrien# include <config.h> 5038494Sobrien#endif /* HAVE_CONFIG_H */ 5138494Sobrien#include <am_defs.h> 5238494Sobrien#include <amd.h> 5338494Sobrien 5438494Sobrien/**************************************************************************** 5538494Sobrien *** MACROS *** 5638494Sobrien ****************************************************************************/ 5738494Sobrien 5838494Sobrien 5938494Sobrien/**************************************************************************** 6038494Sobrien *** STRUCTURES *** 6138494Sobrien ****************************************************************************/ 6238494Sobrien 6338494Sobrien 6438494Sobrien/**************************************************************************** 6538494Sobrien *** FORWARD DEFINITIONS *** 6638494Sobrien ****************************************************************************/ 67174294Sobrienstatic int amfs_auto_mount(am_node *mp, mntfs *mf); 6838494Sobrien 6938494Sobrien 7038494Sobrien/**************************************************************************** 7138494Sobrien *** OPS STRUCTURES *** 7238494Sobrien ****************************************************************************/ 7338494Sobrienam_ops amfs_auto_ops = 7438494Sobrien{ 7538494Sobrien "auto", 76174294Sobrien amfs_generic_match, 7738494Sobrien 0, /* amfs_auto_init */ 7838494Sobrien amfs_auto_mount, 79174294Sobrien amfs_generic_umount, 80174294Sobrien amfs_generic_lookup_child, 81174294Sobrien amfs_generic_mount_child, 82174294Sobrien amfs_generic_readdir, 8338494Sobrien 0, /* amfs_auto_readlink */ 84174294Sobrien amfs_generic_mounted, 85174294Sobrien 0, /* amfs_auto_umounted */ 86174294Sobrien amfs_generic_find_srvr, 87174294Sobrien 0, /* amfs_auto_get_wchan */ 88174294Sobrien FS_AMQINFO | FS_DIRECTORY, 89174294Sobrien#ifdef HAVE_FS_AUTOFS 90174294Sobrien AUTOFS_AUTO_FS_FLAGS, 91174294Sobrien#endif /* HAVE_FS_AUTOFS */ 9238494Sobrien}; 9338494Sobrien 9438494Sobrien 9538494Sobrien/**************************************************************************** 9638494Sobrien *** FUNCTIONS *** 9738494Sobrien ****************************************************************************/ 9838494Sobrien/* 9938494Sobrien * Mount a sub-mount 10038494Sobrien */ 10138494Sobrienstatic int 102174294Sobrienamfs_auto_mount(am_node *mp, mntfs *mf) 10338494Sobrien{ 10438494Sobrien /* 10538494Sobrien * Pseudo-directories are used to provide some structure 10638494Sobrien * to the automounted directories instead 10738494Sobrien * of putting them all in the top-level automount directory. 10838494Sobrien * 10938494Sobrien * Here, just increment the parent's link count. 11038494Sobrien */ 11138494Sobrien mp->am_parent->am_fattr.na_nlink++; 11238494Sobrien 11338494Sobrien /* 11438494Sobrien * Info field of . means use parent's info field. 11538494Sobrien * Historical - not documented. 11638494Sobrien */ 11738494Sobrien if (mf->mf_info[0] == '.' && mf->mf_info[1] == '\0') 11838494Sobrien mf->mf_info = strealloc(mf->mf_info, mp->am_parent->am_mnt->mf_info); 11938494Sobrien 12038494Sobrien /* 12138494Sobrien * Compute prefix: 12238494Sobrien * 12338494Sobrien * If there is an option prefix then use that else 12438494Sobrien * If the parent had a prefix then use that with name 12538494Sobrien * of this node appended else 12638494Sobrien * Use the name of this node. 12738494Sobrien * 12838494Sobrien * That means if you want no prefix you must say so 12938494Sobrien * in the map. 13038494Sobrien */ 13138494Sobrien if (mf->mf_fo->opt_pref) { 13238494Sobrien /* allow pref:=null to set a real null prefix */ 13338494Sobrien if (STREQ(mf->mf_fo->opt_pref, "null")) { 134119679Smbr mp->am_pref = strdup(""); 13538494Sobrien } else { 13638494Sobrien /* 13738494Sobrien * the prefix specified as an option 13838494Sobrien */ 13938494Sobrien mp->am_pref = strdup(mf->mf_fo->opt_pref); 14038494Sobrien } 14138494Sobrien } else { 14238494Sobrien /* 14338494Sobrien * else the parent's prefix 14438494Sobrien * followed by the name 14538494Sobrien * followed by / 14638494Sobrien */ 14738494Sobrien char *ppref = mp->am_parent->am_pref; 14838494Sobrien if (ppref == 0) 14938494Sobrien ppref = ""; 15038494Sobrien mp->am_pref = str3cat((char *) 0, ppref, mp->am_name, "/"); 15138494Sobrien } 15238494Sobrien 153174294Sobrien#ifdef HAVE_FS_AUTOFS 154174294Sobrien if (mf->mf_flags & MFF_IS_AUTOFS) { 155174294Sobrien char opts[SIZEOF_OPTS]; 156174294Sobrien int error; 15738494Sobrien 158174294Sobrien autofs_get_opts(opts, sizeof(opts), mp->am_autofs_fh); 15938494Sobrien 160174294Sobrien /* now do the mount */ 161174294Sobrien error = amfs_mount(mp, mf, opts); 162174294Sobrien if (error) { 163174294Sobrien errno = error; 164174294Sobrien plog(XLOG_FATAL, "amfs_auto_mount: amfs_mount failed: %m"); 165174294Sobrien return error; 16638494Sobrien } 16738494Sobrien } 168174294Sobrien#endif /* HAVE_FS_AUTOFS */ 16938494Sobrien 17038494Sobrien /* 171174294Sobrien * Attach a map cache 17238494Sobrien */ 173174294Sobrien amfs_mkcacheref(mf); 17438494Sobrien 17538494Sobrien return 0; 17638494Sobrien} 177