/* $NetBSD: wr_atab.c,v 1.1.1.3 2015/01/17 16:34:17 christos Exp $ */ /* * Copyright (c) 1997-2014 Erez Zadok * Copyright (c) 1989 Jan-Simon Pendry * Copyright (c) 1989 Imperial College of Science, Technology & Medicine * Copyright (c) 1989 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. 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. * * * File: am-utils/fsinfo/wr_atab.c * */ #ifdef HAVE_CONFIG_H # include #endif /* HAVE_CONFIG_H */ #include #include #include /* * Write a sequence of automount mount map entries */ static int write_amount_info(FILE *af, automount *ap, u_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_hardwiredfs) { /* * A hardwired filesystem "hostname:path" * rhost:=hostname;rfs:=path */ char *key = ap->a_name + sk; char *hostname = ap->a_hardwiredfs; char *path = strrchr(hostname, (int) ':'); if (path == NULL) { fprintf(stderr, "%s: %s not an NFS filesystem\n", ap->a_name, ap->a_hardwiredfs); errors++; } else { *path = '\0'; path++; /* * Output the map key */ fputs(key, af); fprintf(af, " rhost:=%s", hostname); fprintf(af, ";rfs:=%s", path); if (ap->a_opts && !STREQ(ap->a_opts, "")) { fprintf(af, ";%s", ap->a_opts); } fputc('\n', af); path--; *path = ':'; } } 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) { fsi_mount *mp = (fsi_mount *) dd->dd_data; /* * If the mount point and the exported volname are the * same then this filesystem will be recognized 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, sizeof(amountpt), mp->m_dk->d_host, mp->m_exported->m_volname); if (!STREQ(mp->m_dk->d_mountpt, amountpt)) { /* * 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) { fsi_mount *mp = (fsi_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); /* * 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); if (ap->a_opts && !STREQ(ap->a_opts, "")) { fprintf(af, ";%s", ap->a_opts); } /* * Now determine whether a sublink is required. */ if (exp_namelen < namelen || mvolnlen < volnlen) { char sublink[1024]; sublink[0] = '\0'; if (exp_namelen < namelen) { xstrlcat(sublink, mp->m_name + exp_namelen + 1, sizeof(sublink)); if (mvolnlen < volnlen) xstrlcat(sublink, "/", sizeof(sublink)); } if (mvolnlen < volnlen) xstrlcat(sublink, ap->a_volname + mvolnlen + 1, sizeof(sublink)); 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( 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 */ int write_atab(qelem *q) { int errors = 0; if (mount_pref) { auto_tree *tp; show_area_being_processed("write automount", 5); ITER(tp, auto_tree, q) errors += write_amount(tp->t_mount, tp->t_defaults); } return errors; }