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- /*
- * 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. 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.
- *
- * @(#)fsi_analyze.c 5.3 (Berkeley) 5/12/91
- *
- * $Id: fsi_analyze.c,v 5.2.1.3 91/05/07 22:19:06 jsp Alpha $
- *
- */
-
- /*
- * Analyze filesystem declarations
- *
- * Note: most of this is magic!
- */
-
- #include "../fsinfo/fsinfo.h"
-
- char *disk_fs_strings[] = {
- "fstype", "opts", "dumpset", "passno", "freq", "mount", "log", 0,
- };
-
- char *mount_strings[] = {
- "volname", "exportfs", 0,
- };
-
- char *fsmount_strings[] = {
- "as", "volname", "fstype", "opts", "from", 0,
- };
-
- char *host_strings[] = {
- "host", "netif", "config", "arch", "cluster", "os", 0,
- };
-
- char *ether_if_strings[] = {
- "inaddr", "netmask", "hwaddr", 0,
- };
-
- /*
- * Strip off the trailing part of a domain
- * to produce a short-form domain relative
- * to the local host domain.
- * Note that this has no effect if the domain
- * names do not have the same number of
- * components. If that restriction proves
- * to be a problem then the loop needs recoding
- * to skip from right to left and do partial
- * matches along the way -- ie more expensive.
- */
- void domain_strip(otherdom, localdom)
- char *otherdom, *localdom;
- {
- #ifdef PARTIAL_DOMAINS
- char *p1 = otherdom-1;
- char *p2 = localdom-1;
-
- do {
- if (p1 = strchr(p1+1, '.'))
- if (p2 = strchr(p2+1, '.'))
- if (STREQ(p1+1, p2+1)) {
- *p1 = '\0';
- break;
- }
- } while (p1 && p2);
- #else
- char *p1, *p2;
-
- if ((p1 = strchr(otherdom, '.')) &&
- (p2 = strchr(localdom, '.')) &&
- (strcmp(p1+1, p2+1) == 0))
- *p1 = '\0';
- #endif /* PARTIAL_DOMAINS */
- }
-
- /*
- * Take a little-endian domain name and
- * transform into a big-endian Un*x pathname.
- * For example: kiska.doc.ic -> ic/doc/kiska
- */
- static char *compute_hostpath(hn)
- char *hn;
- {
- char *p = strdup(hn);
- char *d;
- char path[MAXPATHLEN];
-
- domain_strip(p, hostname);
- path[0] = '\0';
-
- do {
- d = strrchr(p, '.');
- if (d) {
- *d = 0;
- strcat(path, d+1);
- strcat(path, "/");
- } else {
- strcat(path, p);
- }
- } while (d);
-
- log("hostpath of '%s' is '%s'", hn, path);
-
- strcpy(p, path);
- return p;
- }
-
- static dict_ent *find_volname(nn)
- char *nn;
- {
- dict_ent *de;
- char *p = strdup(nn);
- char *q;
-
- do {
- log("Searching for volname %s", p);
- de = dict_locate(dict_of_volnames, p);
- q = strrchr(p, '/');
- if (q) *q = '\0';
- } while (!de && q);
-
- free(p);
- return de;
- }
-
- static show_required(l, mask, info, hostname, strings)
- ioloc *l;
- int mask;
- char *info;
- char *hostname;
- char *strings[];
- {
- int i;
- log("mask left for %s:%s is %#x", hostname, info, mask);
-
- for (i = 0; strings[i]; i++)
- if (ISSET(mask, i))
- lerror(l, "%s:%s needs field \"%s\"", hostname, info, strings[i]);
- }
-
- /*
- * Check and fill in "exportfs" details.
- * Make sure the m_exported field references
- * the most local node with an "exportfs" entry.
- */
- static int check_exportfs(q, e)
- qelem *q;
- mount *e;
- {
- mount *mp;
- int errors = 0;
-
- ITER(mp, mount, q) {
- if (ISSET(mp->m_mask, DM_EXPORTFS)) {
- if (e)
- lwarning(mp->m_ioloc, "%s has duplicate exportfs data", mp->m_name);
- mp->m_exported = mp;
- if (!ISSET(mp->m_mask, DM_VOLNAME))
- set_mount(mp, DM_VOLNAME, strdup(mp->m_name));
- } else {
- mp->m_exported = e;
- }
-
- /*
- * Recursively descend the mount tree
- */
- if (mp->m_mount)
- errors += check_exportfs(mp->m_mount, mp->m_exported);
-
- /*
- * If a volume name has been specified, but this node and none
- * of its parents has been exported, report an error.
- */
- if (ISSET(mp->m_mask, DM_VOLNAME) && !mp->m_exported) {
- lerror(mp->m_ioloc, "%s has a volname but no exportfs data", mp->m_name);
- errors++;
- }
- }
-
- return errors;
- }
-
- static int analyze_dkmount_tree(q, parent, dk)
- qelem *q;
- mount *parent;
- disk_fs *dk;
- {
- mount *mp;
- int errors = 0;
-
- ITER(mp, mount, q) {
- log("Mount %s:", mp->m_name);
- if (parent) {
- char n[MAXPATHLEN];
- sprintf(n, "%s/%s", parent->m_name, mp->m_name);
- if (*mp->m_name == '/')
- lerror(mp->m_ioloc, "sub-directory %s of %s starts with '/'", mp->m_name, parent->m_name);
- else if (STREQ(mp->m_name, "default"))
- lwarning(mp->m_ioloc, "sub-directory of %s is named \"default\"", parent->m_name);
- log("Changing name %s to %s", mp->m_name, n);
- free(mp->m_name);
- mp->m_name = strdup(n);
- }
- mp->m_name_len = strlen(mp->m_name);
- mp->m_parent = parent;
- mp->m_dk = dk;
- if (mp->m_mount)
- analyze_dkmount_tree(mp->m_mount, mp, dk);
- }
-
- return errors;
- }
-
- /*
- * The mount tree is a singleton list
- * containing the top-level mount
- * point for a disk.
- */
- static int analyze_dkmounts(dk, q)
- disk_fs *dk;
- qelem *q;
- {
- int errors = 0;
- mount *mp, *mp2 = 0;
- int i = 0;
-
- /*
- * First scan the list of subdirs to make
- * sure there is only one - and remember it
- */
- if (q) {
- ITER(mp, mount, q) {
- mp2 = mp;
- i++;
- }
- }
-
- /*
- * Check...
- */
- if (i < 1) {
- lerror(dk->d_ioloc, "%s:%s has no mount point", dk->d_host->h_hostname, dk->d_dev);
- return 1;
- }
- if (i > 1) {
- lerror(dk->d_ioloc, "%s:%s has more than one mount point", dk->d_host->h_hostname, dk->d_dev);
- errors++;
- }
- /*
- * Now see if a default mount point is required
- */
- if (STREQ(mp2->m_name, "default")) {
- if (ISSET(mp2->m_mask, DM_VOLNAME)) {
- char nbuf[1024];
- compute_automount_point(nbuf, dk->d_host, mp2->m_volname);
- free(mp2->m_name);
- mp2->m_name = strdup(nbuf);
- log("%s:%s has default mount on %s", dk->d_host->h_hostname, dk->d_dev, mp2->m_name);
- } else {
- lerror(dk->d_ioloc, "no volname given for %s:%s", dk->d_host->h_hostname, dk->d_dev);
- errors++;
- }
- }
- /*
- * Fill in the disk mount point
- */
- if (!errors && mp2 && mp2->m_name)
- dk->d_mountpt = strdup(mp2->m_name);
- else
- dk->d_mountpt = strdup("error");
-
- /*
- * Analyze the mount tree
- */
- errors += analyze_dkmount_tree(q, 0, dk);
-
- /*
- * Analyze the export tree
- */
- errors += check_exportfs(q, 0);
-
- return errors;
- }
-
- static void fixup_required_disk_info(dp)
- disk_fs *dp;
- {
- /*
- * "fstype"
- */
- if (ISSET(dp->d_mask, DF_FSTYPE)) {
- if (STREQ(dp->d_fstype, "swap")) {
- /*
- * Fixup for a swap device
- */
- if (!ISSET(dp->d_mask, DF_PASSNO)) {
- dp->d_passno = 0;
- BITSET(dp->d_mask, DF_PASSNO);
- } else if (dp->d_freq != 0) {
- lwarning(dp->d_ioloc,
- "Pass number for %s:%s is non-zero",
- dp->d_host->h_hostname, dp->d_dev);
- }
-
- /*
- * "freq"
- */
- if (!ISSET(dp->d_mask, DF_FREQ)) {
- dp->d_freq = 0;
- BITSET(dp->d_mask, DF_FREQ);
- } else if (dp->d_freq != 0) {
- lwarning(dp->d_ioloc,
- "dump frequency for %s:%s is non-zero",
- dp->d_host->h_hostname, dp->d_dev);
- }
-
- /*
- * "opts"
- */
- if (!ISSET(dp->d_mask, DF_OPTS))
- set_disk_fs(dp, DF_OPTS, strdup("swap"));
-
- /*
- * "mount"
- */
- if (!ISSET(dp->d_mask, DF_MOUNT)) {
- qelem *q = new_que();
- mount *m = new_mount();
- m->m_name = strdup("swap");
- m->m_mount = new_que();
- ins_que(&m->m_q, q->q_back);
- dp->d_mount = q;
- BITSET(dp->d_mask, DF_MOUNT);
- } else {
- lerror(dp->d_ioloc, "%s: mount field specified for swap partition", dp->d_host->h_hostname);
- }
- } else if (STREQ(dp->d_fstype, "export")) {
- /*
- * "passno"
- */
- if (!ISSET(dp->d_mask, DF_PASSNO)) {
- dp->d_passno = 0;
- BITSET(dp->d_mask, DF_PASSNO);
- } else if (dp->d_passno != 0) {
- lwarning(dp->d_ioloc,
- "pass number for %s:%s is non-zero",
- dp->d_host->h_hostname, dp->d_dev);
- }
-
- /*
- * "freq"
- */
- if (!ISSET(dp->d_mask, DF_FREQ)) {
- dp->d_freq = 0;
- BITSET(dp->d_mask, DF_FREQ);
- } else if (dp->d_freq != 0) {
- lwarning(dp->d_ioloc,
- "dump frequency for %s:%s is non-zero",
- dp->d_host->h_hostname, dp->d_dev);
- }
-
- /*
- * "opts"
- */
- if (!ISSET(dp->d_mask, DF_OPTS))
- set_disk_fs(dp, DF_OPTS, strdup("rw,defaults"));
-
- }
- }
- }
-
- static void fixup_required_mount_info(fp, de)
- fsmount *fp;
- dict_ent *de;
- {
- if (!ISSET(fp->f_mask, FM_FROM)) {
- if (de->de_count != 1) {
- lerror(fp->f_ioloc, "ambiguous mount: %s is a replicated filesystem", fp->f_volname);
- } else {
- dict_data *dd;
- mount *mp = 0;
- ITER(dd, dict_data, &de->de_q) {
- mp = (mount *) dd->dd_data;
- break;
- }
- if (!mp)
- abort();
- fp->f_ref = mp;
- set_fsmount(fp, FM_FROM, mp->m_dk->d_host->h_hostname);
- log("set: %s comes from %s", fp->f_volname, fp->f_from);
- }
- }
-
- if (!ISSET(fp->f_mask, FM_FSTYPE)) {
- set_fsmount(fp, FM_FSTYPE, strdup("nfs"));
- log("set: fstype is %s", fp->f_fstype);
- }
-
- if (!ISSET(fp->f_mask, FM_OPTS)) {
- set_fsmount(fp, FM_OPTS, strdup("rw,nosuid,grpid,defaults"));
- log("set: opts are %s", fp->f_opts);
- }
-
- if (!ISSET(fp->f_mask, FM_LOCALNAME)) {
- if (fp->f_ref) {
- set_fsmount(fp, FM_LOCALNAME, strdup(fp->f_volname));
- log("set: localname is %s", fp->f_localname);
- } else {
- lerror(fp->f_ioloc, "cannot determine localname since volname %s is not uniquely defined", fp->f_volname);
- }
- }
- }
-
- /*
- * For each disk on a host
- * analyze the mount information
- * and fill in any derivable
- * details.
- */
- static void analyze_drives(hp)
- host *hp;
- {
- qelem *q = hp->h_disk_fs;
- disk_fs *dp;
-
- ITER(dp, disk_fs, q) {
- int req;
- log("Disk %s:", dp->d_dev);
- dp->d_host = hp;
- fixup_required_disk_info(dp);
- req = ~dp->d_mask & DF_REQUIRED;
- if (req)
- show_required(dp->d_ioloc, req, dp->d_dev, hp->h_hostname, disk_fs_strings);
- analyze_dkmounts(dp, dp->d_mount);
- }
- }
-
- /*
- * Check that all static mounts make sense and
- * that the source volumes exist.
- */
- static void analyze_mounts(hp)
- host *hp;
- {
- qelem *q = hp->h_mount;
- fsmount *fp;
- int netbootp = 0;
-
- ITER(fp, fsmount, q) {
- char *p;
- char *nn = strdup(fp->f_volname);
- int req;
- dict_ent *de;
- int found = 0;
- int matched = 0;
- do {
- p = 0;
- de = find_volname(nn);
- log("Mount: %s (trying %s)", fp->f_volname, nn);
-
- if (de) {
- found = 1;
- /*
- * Check that the from field is really exporting
- * the filesystem requested.
- */
- if (ISSET(fp->f_mask, FM_FROM)) {
- dict_data *dd;
- mount *mp2 = 0;
- ITER(dd, dict_data, &de->de_q) {
- mount *mp = (mount *) dd->dd_data;
- if (STREQ(mp->m_dk->d_host->h_hostname, fp->f_from)) {
- mp2 = mp;
- break;
- }
- }
-
- if (mp2) {
- fp->f_ref = mp2;
- matched = 1;
- break;
- }
- } else {
- matched = 1;
- break;
- }
- }
- p = strrchr(nn, '/');
- if (p)
- *p = 0;
- } while (de && p);
- free(nn);
-
- if (!found) {
- lerror(fp->f_ioloc, "volname %s unknown", fp->f_volname);
- } else if (matched) {
- fixup_required_mount_info(fp, de);
- req = ~fp->f_mask & FM_REQUIRED;
- if (req) {
- show_required(fp->f_ioloc, req, fp->f_volname, hp->h_hostname,
- fsmount_strings);
- } else if (strcmp(fp->f_localname, "/") == 0) {
- hp->h_netroot = fp;
- netbootp |= FM_NETROOT;
- } else if (strcmp(fp->f_localname, "swap") == 0) {
- hp->h_netswap = fp;
- netbootp |= FM_NETSWAP;
- }
- } else {
- lerror(fp->f_ioloc, "volname %s not exported from %s", fp->f_volname,
- fp->f_from ? fp->f_from : "anywhere");
- }
- }
-
- if (netbootp && (netbootp != FM_NETBOOT))
- lerror(hp->h_ioloc, "network booting requires both root and swap areas");
- }
-
- void analyze_hosts(q)
- qelem *q;
- {
- host *hp;
-
- show_area_being_processed("analyze hosts", 5);
-
- /*
- * Check all drives
- */
- ITER(hp, host, q) {
- log("disks on host %s", hp->h_hostname);
- show_new("ana-host");
- hp->h_hostpath = compute_hostpath(hp->h_hostname);
-
- if (hp->h_disk_fs)
- analyze_drives(hp);
-
- }
-
- show_area_being_processed("analyze mounts", 5);
-
- /*
- * Check static mounts
- */
- ITER(hp, host, q) {
- log("mounts on host %s", hp->h_hostname);
- show_new("ana-mount");
- if (hp->h_mount)
- analyze_mounts(hp);
-
- }
- }
-
- /*
- * Check an automount request
- */
- static void analyze_automount(ap)
- automount *ap;
- {
- dict_ent *de = find_volname(ap->a_volname);
- if (de) {
- ap->a_mounted = de;
- } else {
- if (STREQ(ap->a_volname, ap->a_name))
- lerror(ap->a_ioloc, "unknown volname %s automounted", ap->a_volname);
- else
- lerror(ap->a_ioloc, "unknown volname %s automounted on %s", ap->a_volname, ap->a_name);
- }
- }
-
- static void analyze_automount_tree(q, pref, lvl)
- qelem *q;
- char *pref;
- int lvl;
- {
- automount *ap;
-
- ITER(ap, automount, q) {
- char nname[1024];
- if (lvl > 0 || ap->a_mount)
- if (ap->a_name[1] && strchr(ap->a_name+1, '/'))
- lerror(ap->a_ioloc, "not allowed '/' in a directory name");
- sprintf(nname, "%s/%s", pref, ap->a_name);
- free(ap->a_name);
- ap->a_name = strdup(nname[1] == '/' ? nname+1 : nname);
- log("automount point %s:", ap->a_name);
- show_new("ana-automount");
- if (ap->a_mount) {
- analyze_automount_tree(ap->a_mount, ap->a_name, lvl+1);
- } else if (ap->a_volname) {
- log("\tautomount from %s", ap->a_volname);
- analyze_automount(ap);
- } else if (ap->a_symlink) {
- log("\tsymlink to %s", ap->a_symlink);
- } else {
- ap->a_volname = strdup(ap->a_name);
- log("\timplicit automount from %s", ap->a_volname);
- analyze_automount(ap);
- }
- }
- }
-
- void analyze_automounts(q)
- qelem *q;
- {
- auto_tree *tp;
-
- show_area_being_processed("analyze automount", 5);
- /*
- * q is a list of automounts
- */
- ITER(tp, auto_tree, q)
- analyze_automount_tree(tp->t_mount, "", 0);
- }
-