335 lines
8.8 KiB
C
335 lines
8.8 KiB
C
/*
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* Copyright (c) 1997-2006 Erez Zadok
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* Copyright (c) 1989 Jan-Simon Pendry
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* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1989 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* File: am-utils/fsinfo/wr_atab.c
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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#include <fsi_data.h>
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#include <fsinfo.h>
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/*
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* Write a sequence of automount mount map entries
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*/
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static int
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write_amount_info(FILE *af, automount *ap, u_int sk)
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{
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int errors = 0;
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if (ap->a_mount) {
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/*
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* A pseudo-directory.
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* This can also be a top-level directory, in which
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* case the type:=auto is not wanted...
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*
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* type:=auto;fs:=${map};pref:=whatever/
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*/
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automount *ap2;
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if (strlen(ap->a_name) > sk) {
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fprintf(af, "%s type:=auto;fs:=${map};pref:=%s/\n",
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ap->a_name + sk, ap->a_name + sk);
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}
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ITER(ap2, automount, ap->a_mount)
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errors += write_amount_info(af, ap2, sk);
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} else if (ap->a_hardwiredfs) {
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/*
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* A hardwired filesystem "hostname:path"
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* rhost:=hostname;rfs:=path
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*/
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char *key = ap->a_name + sk;
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char *hostname = ap->a_hardwiredfs;
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char *path = strrchr(hostname, (int) ':');
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if (path == NULL) {
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fprintf(stderr, "%s: %s not an NFS filesystem\n", ap->a_name, ap->a_hardwiredfs);
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errors++;
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} else {
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*path = '\0';
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path++;
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/*
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* Output the map key
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*/
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fputs(key, af);
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fprintf(af, " rhost:=%s", hostname);
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fprintf(af, ";rfs:=%s", path);
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if (ap->a_opts && !STREQ(ap->a_opts, "")) {
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fprintf(af, ";%s", ap->a_opts);
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}
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fputc('\n', af);
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path--;
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*path = ':';
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}
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} else if (ap->a_mounted) {
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/*
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* A mounted partition
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* type:=link [ link entries ] type:=nfs [ nfs entries ]
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*/
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dict_data *dd;
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dict_ent *de = ap->a_mounted;
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int done_type_link = 0;
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char *key = ap->a_name + sk;
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/*
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* Output the map key
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*/
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fputs(key, af);
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/*
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* First output any Link locations that would not
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* otherwise be correctly mounted. These refer
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* to filesystem which are not mounted in the same
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* place which the automounter would use.
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*/
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ITER(dd, dict_data, &de->de_q) {
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fsi_mount *mp = (fsi_mount *) dd->dd_data;
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/*
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* If the mount point and the exported volname are the
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* same then this filesystem will be recognized by
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* the restart code - so we don't need to put out a
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* special rule for it.
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*/
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if (mp->m_dk->d_host->h_lochost) {
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char amountpt[1024];
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compute_automount_point(amountpt, sizeof(amountpt),
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mp->m_dk->d_host, mp->m_exported->m_volname);
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if (!STREQ(mp->m_dk->d_mountpt, amountpt)) {
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/*
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* ap->a_volname is the name of the aliased volume
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* mp->m_name is the mount point of the filesystem
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* mp->m_volname is the volume name of the filesystems
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*/
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/*
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* Find length of key and volume names
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*/
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int avlen = strlen(ap->a_volname);
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int mnlen = strlen(mp->m_volname);
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/*
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* Make sure a -type:=link is output once
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*/
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if (!done_type_link) {
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done_type_link = 1;
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fputs(" -type:=link", af);
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}
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/*
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* Output a selector for the hostname,
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* the device from which to mount and
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* where to mount. This will correspond
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* to the values output for the fstab.
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*/
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if (mp->m_dk->d_host->h_lochost)
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fprintf(af, " host==%s", mp->m_dk->d_host->h_lochost);
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else
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fprintf(af, " hostd==%s", mp->m_dk->d_host->h_hostname);
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fprintf(af, ";fs:=%s", mp->m_name);
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/*
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* ... and a sublink if needed
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*/
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if (mnlen < avlen) {
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char *sublink = ap->a_volname + mnlen + 1;
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fprintf(af, "/%s", sublink);
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}
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fputs(" ||", af);
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}
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}
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}
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/*
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* Next do the NFS locations
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*/
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if (done_type_link)
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fputs(" -", af);
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ITER(dd, dict_data, &de->de_q) {
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fsi_mount *mp = (fsi_mount *) dd->dd_data;
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int namelen = mp->m_name_len;
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int exp_namelen = mp->m_exported->m_name_len;
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int volnlen = strlen(ap->a_volname);
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int mvolnlen = strlen(mp->m_volname);
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fputc(' ', af);
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/*
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* Output any selectors
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*/
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if (mp->m_sel)
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fprintf(af, "%s;", mp->m_sel);
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/*
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* Print host and volname of exported filesystem
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*/
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fprintf(af, "rhost:=%s",
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mp->m_dk->d_host->h_lochost ?
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mp->m_dk->d_host->h_lochost :
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mp->m_dk->d_host->h_hostname);
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fprintf(af, ";rfs:=%s", mp->m_exported->m_volname);
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if (ap->a_opts && !STREQ(ap->a_opts, "")) {
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fprintf(af, ";%s", ap->a_opts);
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}
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/*
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* Now determine whether a sublink is required.
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*/
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if (exp_namelen < namelen || mvolnlen < volnlen) {
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char sublink[1024];
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sublink[0] = '\0';
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if (exp_namelen < namelen) {
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xstrlcat(sublink, mp->m_name + exp_namelen + 1, sizeof(sublink));
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if (mvolnlen < volnlen)
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xstrlcat(sublink, "/", sizeof(sublink));
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}
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if (mvolnlen < volnlen)
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xstrlcat(sublink, ap->a_volname + mvolnlen + 1, sizeof(sublink));
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fprintf(af, ";sublink:=%s", sublink);
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}
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}
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fputc('\n', af);
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} else if (ap->a_symlink) {
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/*
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* A specific link.
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*
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* type:=link;fs:=whatever
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*/
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fprintf(af, "%s type:=link;fs:=%s\n", ap->a_name + sk, ap->a_symlink);
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}
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return errors;
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}
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/*
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* Write a single automount configuration file
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*/
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static int
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write_amount( qelem *q, char *def)
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{
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automount *ap;
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int errors = 0;
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int direct = 0;
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/*
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* Output all indirect maps
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*/
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ITER(ap, automount, q) {
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FILE *af;
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char *p;
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/*
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* If there is no a_mount node then this is really
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* a direct mount, so just keep a count and continue.
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* Direct mounts are output into a special file during
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* the second pass below.
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*/
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if (!ap->a_mount) {
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direct++;
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continue;
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}
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p = strrchr(ap->a_name, '/');
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if (!p)
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p = ap->a_name;
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else
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p++;
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af = pref_open(mount_pref, p, gen_hdr, ap->a_name);
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if (af) {
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show_new(ap->a_name);
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fputs("/defaults ", af);
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if (*def)
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fprintf(af, "%s;", def);
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fputs("type:=nfs\n", af);
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errors += write_amount_info(af, ap, strlen(ap->a_name) + 1);
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errors += pref_close(af);
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}
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}
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/*
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* Output any direct map entries which were found during the
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* previous pass over the data.
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*/
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if (direct) {
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FILE *af = pref_open(mount_pref, "direct.map", info_hdr, "direct mount");
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if (af) {
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show_new("direct mounts");
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fputs("/defaults ", af);
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if (*def)
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fprintf(af, "%s;", def);
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fputs("type:=nfs\n", af);
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ITER(ap, automount, q)
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if (!ap->a_mount)
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errors += write_amount_info(af, ap, 1);
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errors += pref_close(af);
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}
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}
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return errors;
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}
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/*
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* Write all the needed automount configuration files
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*/
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int
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write_atab(qelem *q)
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{
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int errors = 0;
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if (mount_pref) {
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auto_tree *tp;
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show_area_being_processed("write automount", 5);
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ITER(tp, auto_tree, q)
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errors += write_amount(tp->t_mount, tp->t_defaults);
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}
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return errors;
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}
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