2 * Bacula Catalog Database routines written specifically
3 * for Bacula. Note, these routines are VERY dumb and
4 * do not provide all the functionality of an SQL database.
5 * The purpose of these routines is to ensure that Bacula
6 * can limp along if no real database is loaded on the
9 * Kern Sibbald, January MMI
17 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
19 This program is free software; you can redistribute it and/or
20 modify it under the terms of the GNU General Public License as
21 published by the Free Software Foundation; either version 2 of
22 the License, or (at your option) any later version.
24 This program is distributed in the hope that it will be useful,
25 but WITHOUT ANY WARRANTY; without even the implied warranty of
26 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 General Public License for more details.
29 You should have received a copy of the GNU General Public
30 License along with this program; if not, write to the Free
31 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
37 /* The following is necessary so that we do not include
38 * the dummy external definition of DB.
40 #define __SQL_C /* indicate that this is sql.c */
47 /* Forward referenced functions */
49 extern char *working_directory;
51 /* List of open databases */
52 static BQUEUE db_list = {&db_list, &db_list};
53 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
55 /* -----------------------------------------------------------------------
57 * Bacula specific defines and subroutines
59 * -----------------------------------------------------------------------
63 #define DB_CONTROL_FILENAME "control.db"
64 #define DB_JOBS_FILENAME "jobs.db"
65 #define DB_POOLS_FILENAME "pools.db"
66 #define DB_MEDIA_FILENAME "media.db"
67 #define DB_JOBMEDIA_FILENAME "jobmedia.db"
68 #define DB_CLIENT_FILENAME "client.db"
69 #define DB_FILESET_FILENAME "fileset.db"
71 static POOLMEM *make_filename(B_DB *mdb, char *name)
76 dbf = get_pool_memory(PM_FNAME);
77 if (working_directory[strlen(working_directory)-1] == '/') {
82 Mmsg(&dbf, "%s%c%s-%s", working_directory, sep, mdb->db_name, name);
86 int bdb_write_control_file(B_DB *mdb)
88 mdb->control.time = time(NULL);
89 lseek(mdb->cfd, 0, SEEK_SET);
90 if (write(mdb->cfd, &mdb->control, sizeof(mdb->control)) != sizeof(mdb->control)) {
91 Mmsg1(&mdb->errmsg, "Error writing control file. ERR=%s\n", strerror(errno));
92 Emsg0(M_FATAL, 0, mdb->errmsg);
99 * Initialize database data structure. In principal this should
100 * never have errors, or it is really fatal.
103 db_init_database(void *jcr, char *db_name, char *db_user, char *db_password)
106 P(mutex); /* lock DB queue */
107 /* Look to see if DB already open */
108 for (mdb=NULL; (mdb=(B_DB *)qnext(&db_list, &mdb->bq)); ) {
109 if (strcmp(mdb->db_name, db_name) == 0) {
110 Dmsg2(200, "DB REopen %d %s\n", mdb->ref_count, db_name);
113 return mdb; /* already open */
116 Dmsg0(200, "db_open first time\n");
117 mdb = (B_DB *) malloc(sizeof(B_DB));
118 memset(mdb, 0, sizeof(B_DB));
119 Dmsg0(200, "DB struct init\n");
120 mdb->db_name = bstrdup(db_name);
121 mdb->errmsg = get_pool_memory(PM_EMSG);
123 mdb->cmd = get_pool_memory(PM_EMSG); /* command buffer */
125 mdb->cached_path = get_pool_memory(PM_FNAME);
126 mdb->cached_path_id = 0;
127 qinsert(&db_list, &mdb->bq); /* put db in list */
128 Dmsg0(200, "Done db_open_database()\n");
136 * Now actually open the database. This can generate errors,
137 * which are returned in the errmsg
140 db_open_database(B_DB *mdb)
146 Dmsg1(200, "db_open_database() %s\n", mdb->db_name);
150 if (rwl_init(&mdb->lock) != 0) {
151 Mmsg1(&mdb->errmsg, "Unable to initialize DB lock. ERR=%s\n", strerror(errno));
156 Dmsg0(200, "make_filename\n");
157 dbf = make_filename(mdb, DB_CONTROL_FILENAME);
158 mdb->cfd = open(dbf, O_CREAT|O_RDWR, 0600);
161 Mmsg2(&mdb->errmsg, "Unable to open Catalog DB control file %s: ERR=%s\n",
162 dbf, strerror(errno));
166 Dmsg0(200, "DB open\n");
167 /* See if the file was previously written */
168 filend = lseek(mdb->cfd, 0, SEEK_END);
169 if (filend == 0) { /* No, initialize everything */
170 Dmsg0(200, "Init DB files\n");
171 memset(&mdb->control, 0, sizeof(mdb->control));
172 mdb->control.bdb_version = BDB_VERSION;
173 bdb_write_control_file(mdb);
175 /* Create Jobs File */
176 dbf = make_filename(mdb, DB_JOBS_FILENAME);
177 fd = open(dbf, O_CREAT|O_RDWR, 0600);
181 /* Create Pools File */
182 dbf = make_filename(mdb, DB_POOLS_FILENAME);
183 fd = open(dbf, O_CREAT|O_RDWR, 0600);
187 /* Create Media File */
188 dbf = make_filename(mdb, DB_MEDIA_FILENAME);
189 fd = open(dbf, O_CREAT|O_RDWR, 0600);
193 /* Create JobMedia File */
194 dbf = make_filename(mdb, DB_JOBMEDIA_FILENAME);
195 fd = open(dbf, O_CREAT|O_RDWR, 0600);
199 /* Create Client File */
200 dbf = make_filename(mdb, DB_CLIENT_FILENAME);
201 fd = open(dbf, O_CREAT|O_RDWR, 0600);
205 /* Create FileSet File */
206 dbf = make_filename(mdb, DB_FILESET_FILENAME);
207 fd = open(dbf, O_CREAT|O_RDWR, 0600);
212 Dmsg0(200, "Read control file\n");
214 lseek(mdb->cfd, 0, SEEK_SET); /* seek to begining of control file */
215 if (read(mdb->cfd, &mdb->control, sizeof(mdb->control)) != sizeof(mdb->control)) {
216 Mmsg1(&mdb->errmsg, "Error reading catalog DB control file. ERR=%s\n", strerror(errno));
218 } else if (mdb->control.bdb_version != BDB_VERSION) {
219 Mmsg2(&mdb->errmsg, "Error, catalog DB control file wrong version. \
221 Please reinitialize the working directory.\n",
222 BDB_VERSION, mdb->control.bdb_version);
233 void db_close_database(B_DB *mdb)
237 if (mdb->ref_count == 0) {
239 /* close file descriptors */
251 fclose(mdb->mediafd);
253 if (mdb->jobmediafd) {
254 fclose(mdb->jobmediafd);
257 fclose(mdb->clientfd);
259 if (mdb->filesetfd) {
260 fclose(mdb->filesetfd);
262 /* pthread_mutex_destroy(&mdb->mutex); */
263 rwl_destroy(&mdb->lock);
264 free_pool_memory(mdb->errmsg);
265 free_pool_memory(mdb->cmd);
266 free_pool_memory(mdb->cached_path);
273 void db_escape_string(char *snew, char *old, int len)
278 char *db_strerror(B_DB *mdb)
283 int db_sql_query(B_DB *mdb, char *query, DB_RESULT_HANDLER *result_handler, void *ctx)
289 * Open the Jobs file for reading/writing
291 int bdb_open_jobs_file(B_DB *mdb)
296 dbf = make_filename(mdb, DB_JOBS_FILENAME);
297 mdb->jobfd = fopen(dbf, "r+");
299 Mmsg2(&mdb->errmsg, "Error opening DB Jobs file %s: ERR=%s\n",
300 dbf, strerror(errno));
301 Emsg0(M_FATAL, 0, mdb->errmsg);
311 * Open the JobMedia file for reading/writing
313 int bdb_open_jobmedia_file(B_DB *mdb)
317 if (!mdb->jobmediafd) {
318 dbf = make_filename(mdb, DB_JOBMEDIA_FILENAME);
319 mdb->jobmediafd = fopen(dbf, "r+");
320 if (!mdb->jobmediafd) {
321 Mmsg2(&mdb->errmsg, "Error opening DB JobMedia file %s: ERR=%s\n",
322 dbf, strerror(errno));
323 Emsg0(M_FATAL, 0, mdb->errmsg);
334 * Open the Pools file for reading/writing
336 int bdb_open_pools_file(B_DB *mdb)
341 dbf = make_filename(mdb, DB_POOLS_FILENAME);
342 mdb->poolfd = fopen(dbf, "r+");
344 Mmsg2(&mdb->errmsg, "Error opening DB Pools file %s: ERR=%s\n",
345 dbf, strerror(errno));
346 Emsg0(M_FATAL, 0, mdb->errmsg);
350 Dmsg1(200, "Opened pool file %s\n", dbf);
357 * Open the Client file for reading/writing
359 int bdb_open_client_file(B_DB *mdb)
363 if (!mdb->clientfd) {
364 dbf = make_filename(mdb, DB_CLIENT_FILENAME);
365 mdb->clientfd = fopen(dbf, "r+");
366 if (!mdb->clientfd) {
367 Mmsg2(&mdb->errmsg, "Error opening DB Clients file %s: ERR=%s\n",
368 dbf, strerror(errno));
369 Emsg0(M_FATAL, 0, mdb->errmsg);
379 * Open the FileSet file for reading/writing
381 int bdb_open_fileset_file(B_DB *mdb)
385 if (!mdb->filesetfd) {
386 dbf = make_filename(mdb, DB_CLIENT_FILENAME);
387 mdb->filesetfd = fopen(dbf, "r+");
388 if (!mdb->filesetfd) {
389 Mmsg2(&mdb->errmsg, "Error opening DB FileSet file %s: ERR=%s\n",
390 dbf, strerror(errno));
391 Emsg0(M_FATAL, 0, mdb->errmsg);
403 * Open the Media file for reading/writing
405 int bdb_open_media_file(B_DB *mdb)
410 dbf = make_filename(mdb, DB_MEDIA_FILENAME);
411 mdb->mediafd = fopen(dbf, "r+");
413 Mmsg2(&mdb->errmsg, "Error opening DB Media file %s: ERR=%s\n",
414 dbf, strerror(errno));
424 void _db_lock(char *file, int line, B_DB *mdb)
427 if ((errstat=rwl_writelock(&mdb->lock)) != 0) {
428 e_msg(file, line, M_ABORT, 0, "rwl_writelock failure. ERR=%s\n",
433 void _db_unlock(char *file, int line, B_DB *mdb)
436 if ((errstat=rwl_writeunlock(&mdb->lock)) != 0) {
437 e_msg(file, line, M_ABORT, 0, "rwl_writeunlock failure. ERR=%s\n",
443 * Start a transaction. This groups inserts and makes things
444 * much more efficient. Usually started when inserting
447 void db_start_transaction(B_DB *mdb)
451 void db_end_transaction(B_DB *mdb)
456 #endif /* HAVE_BACULA_DB */