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+/*
+ * Copyright (c) 1989 Jan-Simon Pendry
+ * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
+ * Copyright (c) 1989, 1993
+ * 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 acknowledgement:
+ * 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.
+ *
+ * @(#)wr_atab.c 8.1 (Berkeley) 6/6/93
+ *
+ * $Id: wr_atab.c,v 5.2.2.1 1992/02/09 15:09:44 jsp beta $
+ *
+ */
+
+#include "../fsinfo/fsinfo.h"
+
+/*
+ * Write a sequence of automount mount map entries
+ */
+static int write_amount_info(af, ap, sk)
+FILE *af;
+automount *ap;
+int sk;
+{
+ int errors = 0;
+ if (ap->a_mount) {
+ /*
+ * A pseudo-directory.
+ * This can also be a top-level directory, in which
+ * case the type:=auto is not wanted...
+ *
+ * type:=auto;fs:=${map};pref:=whatever/
+ */
+ automount *ap2;
+ if (strlen(ap->a_name) > sk) {
+ fprintf(af, "%s type:=auto;fs:=${map};pref:=%s/\n",
+ ap->a_name + sk, ap->a_name + sk);
+ }
+ ITER(ap2, automount, ap->a_mount)
+ errors += write_amount_info(af, ap2, sk);
+ } else if (ap->a_mounted) {
+ /*
+ * A mounted partition
+ * type:=link [ link entries ] type:=nfs [ nfs entries ]
+ */
+ dict_data *dd;
+ dict_ent *de = ap->a_mounted;
+ int done_type_link = 0;
+ char *key = ap->a_name + sk;
+
+ /*
+ * Output the map key
+ */
+ fputs(key, af);
+
+ /*
+ * First output any Link locations that would not
+ * otherwise be correctly mounted. These refer
+ * to filesystem which are not mounted in the same
+ * place which the automounter would use.
+ */
+ ITER(dd, dict_data, &de->de_q) {
+ mount *mp = (mount *) dd->dd_data;
+ /*
+ * If the mount point and the exported volname are the
+ * same then this filesystem will be recognised by
+ * the restart code - so we don't need to put out a
+ * special rule for it.
+ */
+ if (mp->m_dk->d_host->h_lochost) {
+ char amountpt[1024];
+ compute_automount_point(amountpt, mp->m_dk->d_host, mp->m_exported->m_volname);
+ if (strcmp(mp->m_dk->d_mountpt, amountpt) != 0) {
+ /*
+ * ap->a_volname is the name of the aliased volume
+ * mp->m_name is the mount point of the filesystem
+ * mp->m_volname is the volume name of the filesystems
+ */
+
+ /*
+ * Find length of key and volume names
+ */
+ int avlen = strlen(ap->a_volname);
+ int mnlen = strlen(mp->m_volname);
+ /*
+ * Make sure a -type:=link is output once
+ */
+ if (!done_type_link) {
+ done_type_link = 1;
+ fputs(" -type:=link", af);
+ }
+ /*
+ * Output a selector for the hostname,
+ * the device from which to mount and
+ * where to mount. This will correspond
+ * to the values output for the fstab.
+ */
+ if (mp->m_dk->d_host->h_lochost)
+ fprintf(af, " host==%s", mp->m_dk->d_host->h_lochost);
+ else
+ fprintf(af, " hostd==%s", mp->m_dk->d_host->h_hostname);
+ fprintf(af, ";fs:=%s", mp->m_name);
+ /*
+ * ... and a sublink if needed
+ */
+ if (mnlen < avlen) {
+ char *sublink = ap->a_volname + mnlen + 1;
+ fprintf(af, "/%s", sublink);
+ }
+ fputs(" ||", af);
+ }
+ }
+ }
+
+ /*
+ * Next do the NFS locations
+ */
+
+ if (done_type_link)
+ fputs(" -", af);
+
+ ITER(dd, dict_data, &de->de_q) {
+ mount *mp = (mount *) dd->dd_data;
+ int namelen = mp->m_name_len;
+ int exp_namelen = mp->m_exported->m_name_len;
+ int volnlen = strlen(ap->a_volname);
+ int mvolnlen = strlen(mp->m_volname);
+ fputc(' ', af);
+#ifdef notdef
+ fprintf(af, "\\\n /* avolname = %s, mname = %s,\n * mvolname = %s, mexp_name = %s,\n * mexp_volname = %s\n */\\\n",
+ ap->a_volname, mp->m_name, mp->m_volname, mp->m_exported->m_name, mp->m_exported->m_volname);
+#endif
+ /*
+ * Output any selectors
+ */
+ if (mp->m_sel)
+ fprintf(af, "%s;", mp->m_sel);
+ /*
+ * Print host and volname of exported filesystem
+ */
+ fprintf(af, "rhost:=%s",
+ mp->m_dk->d_host->h_lochost ?
+ mp->m_dk->d_host->h_lochost :
+ mp->m_dk->d_host->h_hostname);
+ fprintf(af, ";rfs:=%s", mp->m_exported->m_volname);
+ /*
+ * Now determine whether a sublink is required.
+ */
+ if (exp_namelen < namelen || mvolnlen < volnlen) {
+ char sublink[1024];
+ sublink[0] = '\0';
+ if (exp_namelen < namelen) {
+ strcat(sublink, mp->m_name + exp_namelen + 1);
+ if (mvolnlen < volnlen)
+ strcat(sublink, "/");
+ }
+ if (mvolnlen < volnlen)
+ strcat(sublink, ap->a_volname + mvolnlen + 1);
+
+ fprintf(af, ";sublink:=%s", sublink);
+ }
+ }
+ fputc('\n', af);
+ } else if (ap->a_symlink) {
+ /*
+ * A specific link.
+ *
+ * type:=link;fs:=whatever
+ */
+ fprintf(af, "%s type:=link;fs:=%s\n", ap->a_name + sk, ap->a_symlink);
+ }
+ return errors;
+}
+
+/*
+ * Write a single automount configuration file
+ */
+static int write_amount(q, def)
+qelem *q;
+char *def;
+{
+ automount *ap;
+ int errors = 0;
+ int direct = 0;
+
+ /*
+ * Output all indirect maps
+ */
+ ITER(ap, automount, q) {
+ FILE *af;
+ char *p;
+ /*
+ * If there is no a_mount node then this is really
+ * a direct mount, so just keep a count and continue.
+ * Direct mounts are output into a special file during
+ * the second pass below.
+ */
+ if (!ap->a_mount) {
+ direct++;
+ continue;
+ }
+ p = strrchr(ap->a_name, '/');
+ if (!p) p = ap->a_name;
+ else p++;
+ af = pref_open(mount_pref, p, gen_hdr, ap->a_name);
+ if (af) {
+ show_new(ap->a_name);
+ fputs("/defaults ", af);
+ if (*def)
+ fprintf(af, "%s;", def);
+ fputs("type:=nfs\n", af);
+ errors += write_amount_info(af, ap, strlen(ap->a_name) + 1);
+ errors += pref_close(af);
+ }
+ }
+
+ /*
+ * Output any direct map entries which were found during the
+ * previous pass over the data.
+ */
+ if (direct) {
+ FILE *af = pref_open(mount_pref, "direct.map", info_hdr, "direct mount");
+ if (af) {
+ show_new("direct mounts");
+ fputs("/defaults ", af);
+ if (*def)
+ fprintf(af, "%s;", def);
+ fputs("type:=nfs\n", af);
+ ITER(ap, automount, q)
+ if (!ap->a_mount)
+ errors += write_amount_info(af, ap, 1);
+ errors += pref_close(af);
+ }
+ }
+
+ return errors;
+}
+
+/*
+ * Write all the needed automount configuration files
+ */
+write_atab(q)
+qelem *q;
+{
+ int errors = 0;
+
+ if (mount_pref) {
+ auto_tree *tp;
+ show_area_being_processed("write automount", "");
+ ITER(tp, auto_tree, q)
+ errors += write_amount(tp->t_mount, tp->t_defaults);
+ }
+
+ return errors;
+}
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