2 Copyright (c) 2009 Frank Lahm <franklahm@gmail.com>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
16 dbd specs and implementation progress
17 =====================================
26 OK If -f is requested, ensure -e is too.
27 Check if volumes is using AFPVOL_CACHE, then wipe db from disk. Rebuild from ad-files.
34 OK F/D Make sure ad file exists
35 OK D Make sure .AppleDouble dir exist, create if missing. Error creating
36 it is fatal as that shouldn't happen as root.
37 OK F/D Delete orphaned ad-files, log dirs in ad-dir
38 OK F/D Check name encoding by roundtripping, log on error
39 OK F/D try: read CNID from ad file (if cnid caching is on)
40 try: fetch CNID from database
41 -> on mismatch: use CNID from file, update database (deleting both found CNIDs first)
42 -> if no CNID in ad file: write CNID from database to ad file
43 -> if no CNID in database: add CNID from ad file to database
44 -> on no CNID at all: create one and store in both places
45 OK F/D Add found CNID, DID, filename, dev/inode, stamp to rebuild database
46 OK F/D Check/update stamp (implicitly done while checking CNIDs)
49 2nd pass: Delete unused CNIDs
50 -----------------------------
54 OK Step through dbd (the one on disk) and rebuild-db from pass 1 and delete any CNID from
55 dbd not in rebuild db. This in only done in exclusive mode.
60 #endif /* HAVE_CONFIG_H */
63 #include <sys/types.h>
72 #include <atalk/logger.h>
73 #include <atalk/cnid_dbd_private.h>
74 #include <atalk/volinfo.h>
75 #include <atalk/util.h>
82 #define DBOPTIONS (DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN)
84 int nocniddb = 0; /* Dont open CNID database, only scan filesystem */
85 volatile sig_atomic_t alarmed; /* flags for signals */
86 int db_locked; /* have we got the fcntl lock on lockfile ? */
89 static int verbose; /* Logging flag */
90 static int exclusive; /* Exclusive volume access */
91 static struct db_param db_param = {
92 NULL, /* Volume dirpath */
93 1, /* bdb logfile autoremove */
94 64 * 1024, /* bdb cachesize (64 MB) */
95 0, /* flush_interval */
96 0, /* flush_frequency */
98 -1, /* fd_table_size */
99 -1, /* idle_timeout */
102 static char dbpath[PATH_MAX]; /* Path to the dbd database */
107 void dbd_log(enum logtype lt, char *fmt, ...)
110 static char logbuffer[1024];
113 if ( (lt == LOGSTD) || (verbose == 1)) {
115 len = vsnprintf(logbuffer, 1023, fmt, args);
119 printf("%s\n", logbuffer);
125 catch SIGINT and SIGTERM which cause clean exit. Ignore anything else.
128 static void sig_handler(int signo)
134 static void set_signal(void)
138 sv.sa_handler = sig_handler;
139 sv.sa_flags = SA_RESTART;
140 sigemptyset(&sv.sa_mask);
141 if (sigaction(SIGTERM, &sv, NULL) < 0) {
142 dbd_log( LOGSTD, "error in sigaction(SIGTERM): %s", strerror(errno));
145 if (sigaction(SIGINT, &sv, NULL) < 0) {
146 dbd_log( LOGSTD, "error in sigaction(SIGINT): %s", strerror(errno));
150 memset(&sv, 0, sizeof(struct sigaction));
151 sv.sa_handler = SIG_IGN;
152 sigemptyset(&sv.sa_mask);
154 if (sigaction(SIGABRT, &sv, NULL) < 0) {
155 dbd_log( LOGSTD, "error in sigaction(SIGABRT): %s", strerror(errno));
158 if (sigaction(SIGHUP, &sv, NULL) < 0) {
159 dbd_log( LOGSTD, "error in sigaction(SIGHUP): %s", strerror(errno));
162 if (sigaction(SIGQUIT, &sv, NULL) < 0) {
163 dbd_log( LOGSTD, "error in sigaction(SIGQUIT): %s", strerror(errno));
168 static void usage (void)
170 printf("Usage: dbd [-e|-t|-v|-x] -d [-i] | -s [-c|-n]| -r [-c|-f] | -u <path to netatalk volume>\n"
171 "dbd can dump, scan, reindex and rebuild Netatalk dbd CNID databases.\n"
172 "dbd must be run with appropiate permissions i.e. as root.\n\n"
173 "Main commands are:\n"
174 " -d Dump CNID database\n"
175 " Option: -i dump indexes too\n\n"
177 " 1. Compare CNIDs in database with volume\n"
178 " 2. Check if .AppleDouble dirs exist\n"
179 " 3. Check if AppleDouble file exist\n"
180 " 4. Report orphaned AppleDouble files\n"
181 " 5. Check for directories inside AppleDouble directories\n"
182 " 6. Check name encoding by roundtripping, log on error\n"
183 " 7. Check for orphaned CNIDs in database (requires -e)\n"
184 " 8. Open and close adouble files\n"
185 " Options: -c Don't check .AppleDouble stuff, only ckeck orphaned.\n"
186 " -n Don't open CNID database, skip CNID checks\n\n"
187 " -r Rebuild volume:\n"
188 " 1. Sync CNIDSs in database with volume\n"
189 " 2. Make sure .AppleDouble dir exist, create if missing\n"
190 " 3. Make sure AppleDouble file exists, create if missing\n"
191 " 4. Delete orphaned AppleDouble files\n"
192 " 5. Check for directories inside AppleDouble directories\n"
193 " 6. Check name encoding by roundtripping, log on error\n"
194 " 7. Check for orphaned CNIDs in database (requires -e)\n"
195 " 8. Open and close adouble files\n"
196 " Options: -c Don't create .AppleDouble stuff, only cleanup orphaned.\n"
197 " -f wipe database and rebuild from IDs stored in AppleDouble files,\n"
198 " only available for volumes without 'nocnidcache' option. Implies -e.\n\n"
199 " -u Prepare upgrade:\n"
200 " Before installing an upgraded version of Netatalk that is linked against\n"
201 " a newer BerkeleyDB lib, run `dbd -u ...` from the OLD Netatalk pior to\n"
202 " upgrading on all volumes. This removes the BerkleyDB environment.\n"
203 " On exit cnid_dbd does this automatically, so normally calling dbd -u should not be necessary.\n\n"
205 " -e only work on inactive volumes and lock them (exclusive)\n"
206 " -x rebuild indexes (just for completeness, mostly useless!)\n"
207 " -t show statistics while running\n"
210 "For -r -f restore of the CNID database from the adouble files, the CNID must of course\n"
211 "be synched to them files first with a plain -r rebuild !\n"
215 int main(int argc, char **argv)
217 int c, lockfd, ret = -1;
218 int dump=0, scan=0, rebuild=0, prep_upgrade=0, rebuildindexes=0, dumpindexes=0, force=0;
219 dbd_flags_t flags = 0;
221 struct volinfo volinfo;
224 if (geteuid() != 0) {
228 /* Inhereting perms in ad_mkdir etc requires this */
231 while ((c = getopt(argc, argv, ":cdefinrstuvx")) != -1) {
234 flags |= DBD_FLAGS_CLEANUP;
244 flags |= DBD_FLAGS_SCAN;
247 nocniddb = 1; /* FIXME: this could/should be a flag too for consistency */
253 flags |= DBD_FLAGS_STATS;
263 flags |= DBD_FLAGS_EXCL;
271 flags |= DBD_FLAGS_FORCE | DBD_FLAGS_EXCL;
281 if ((dump + scan + rebuild + prep_upgrade) != 1) {
286 if ( (optind + 1) != argc ) {
290 volpath = argv[optind];
292 setvbuf(stdout, (char *) NULL, _IONBF, 0);
295 if ((cdir = open(".", O_RDONLY)) < 0) {
296 dbd_log( LOGSTD, "Can't open dir: %s", strerror(errno));
300 /* Setup signal handling */
303 /* Setup logging. Should be portable among *NIXes */
305 setuplog("default log_info /dev/tty");
307 setuplog("default log_debug /dev/tty");
309 /* Load .volinfo file */
310 if (loadvolinfo(volpath, &volinfo) == -1) {
311 dbd_log( LOGSTD, "Not a Netatalk volume at '%s', no .volinfo file at '%s/.AppleDesktop/.volinfo' or unknown volume options", volpath, volpath);
314 if (vol_load_charsets(&volinfo) == -1) {
315 dbd_log( LOGSTD, "Error loading charsets!");
319 /* Sanity checks to ensure we can touch this volume */
320 if (volinfo.v_vfs_ea != AFPVOL_EA_AD && volinfo.v_vfs_ea != AFPVOL_EA_SYS) {
321 dbd_log( LOGSTD, "Unknown Extended Attributes option: %u", volinfo.v_vfs_ea);
325 /* Put "/.AppleDB" at end of volpath, get path from volinfo file */
326 if ( (strlen(volinfo.v_dbpath) + strlen("/.AppleDB")) > (PATH_MAX - 1) ) {
327 dbd_log( LOGSTD, "Volume pathname too long");
330 strncpy(dbpath, volinfo.v_dbpath, PATH_MAX - 9 - 1);
331 strcat(dbpath, "/.AppleDB");
333 /* Check or create dbpath */
334 int dbdirfd = open(dbpath, O_RDONLY);
335 if (dbdirfd == -1 && errno == ENOENT) {
336 if (errno == ENOENT) {
337 if ((mkdir(dbpath, 0755)) != 0) {
338 dbd_log( LOGSTD, "Can't create .AppleDB for \"%s\": %s", dbpath, strerror(errno));
342 dbd_log( LOGSTD, "Somethings wrong with .AppleDB for \"%s\", giving up: %s", dbpath, strerror(errno));
350 if ((db_locked = get_lock(LOCK_EXCL, dbpath)) == -1)
352 if (db_locked != LOCK_EXCL) {
353 /* Couldn't get exclusive lock, try shared lock if -e wasn't requested */
355 dbd_log(LOGSTD, "Database is in use and exlusive was requested");
358 if ((db_locked = get_lock(LOCK_SHRD, NULL)) != LOCK_SHRD)
362 /* Prepare upgrade ? */
364 if (dbif_prep_upgrade(dbpath))
369 /* Check if -f is requested and wipe db if yes */
370 if ((flags & DBD_FLAGS_FORCE) && rebuild && (volinfo.v_flags & AFPVOL_CACHE)) {
371 char cmd[8 + MAXPATHLEN];
372 if ((db_locked = get_lock(LOCK_FREE, NULL)) != 0)
374 snprintf(cmd, 8 + MAXPATHLEN, "rm -f %s/*", dbpath);
375 dbd_log( LOGDEBUG, "Removing old database of volume: '%s'", volpath);
377 dbd_log( LOGDEBUG, "Removed old database.");
378 if ((db_locked = get_lock(LOCK_EXCL, dbpath)) == -1)
383 Lets start with the BerkeleyDB stuff
386 if ((dbd = dbif_init(dbpath, "cnid2.db")) == NULL)
389 if (dbif_env_open(dbd,
391 (db_locked == LOCK_EXCL) ? (DBOPTIONS | DB_RECOVER) : DBOPTIONS) < 0) {
392 dbd_log( LOGSTD, "error opening database!");
396 if (db_locked == LOCK_EXCL)
397 dbd_log( LOGDEBUG, "Finished recovery.");
399 if (dbif_open(dbd, NULL, rebuildindexes) < 0) {
404 if (dbd_stamp(dbd) < 0) {
410 /* Downgrade db lock if not running exclusive */
411 if (!exclusive && (db_locked == LOCK_EXCL)) {
412 if (get_lock(LOCK_UNLOCK, NULL) != 0)
414 if (get_lock(LOCK_SHRD, NULL) != LOCK_SHRD)
418 /* Now execute given command scan|rebuild|dump */
419 if (dump && ! nocniddb) {
420 if (dbif_dump(dbd, dumpindexes) < 0) {
421 dbd_log( LOGSTD, "Error dumping database");
423 } else if ((rebuild && ! nocniddb) || scan) {
424 if (cmd_dbd_scanvol(dbd, &volinfo, flags) < 0) {
425 dbd_log( LOGSTD, "Error repairing database.");
430 dbd_log(LOGDEBUG, "Closing db");
432 if (dbif_close(dbd) < 0) {
433 dbd_log( LOGSTD, "Error closing database");
444 if ((fchdir(cdir)) < 0)
445 dbd_log(LOGSTD, "fchdir: %s", strerror(errno));