diff options
Diffstat (limited to 'usr.sbin/amd/fsinfo/fsi_analyze.c')
| -rw-r--r-- | usr.sbin/amd/fsinfo/fsi_analyze.c | 645 |
1 files changed, 645 insertions, 0 deletions
diff --git a/usr.sbin/amd/fsinfo/fsi_analyze.c b/usr.sbin/amd/fsinfo/fsi_analyze.c new file mode 100644 index 0000000..d436a49 --- /dev/null +++ b/usr.sbin/amd/fsinfo/fsi_analyze.c @@ -0,0 +1,645 @@ +/* + * 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. + * + * @(#)fsi_analyze.c 8.1 (Berkeley) 6/6/93 + * + * $Id: fsi_analyze.c,v 5.2.2.1 1992/02/09 15:09:41 jsp beta $ + * + */ + +/* + * 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); +} |
