1 /*-------------------------------------------------------------------------
2 *
3 * pg_restore.c
4 * pg_restore is an utility extracting postgres database definitions
5 * from a backup archive created by pg_dump using the archiver
6 * interface.
7 *
8 * pg_restore will read the backup archive and
9 * dump out a script that reproduces
10 * the schema of the database in terms of
11 * user-defined types
12 * user-defined functions
13 * tables
14 * indexes
15 * aggregates
16 * operators
17 * ACL - grant/revoke
18 *
19 * the output script is SQL that is understood by PostgreSQL
20 *
21 * Basic process in a restore operation is:
22 *
23 * Open the Archive and read the TOC.
24 * Set flags in TOC entries, and *maybe* reorder them.
25 * Generate script to stdout
26 * Exit
27 *
28 * Copyright (c) 2000, Philip Warner
29 * Rights are granted to use this software in any way so long
30 * as this notice is not removed.
31 *
32 * The author is not responsible for loss or damages that may
33 * result from its use.
34 *
35 *
36 * IDENTIFICATION
37 * src/bin/pg_dump/pg_restore.c
38 *
39 *-------------------------------------------------------------------------
40 */
41 #include "postgres_fe.h"
42
43 #include <ctype.h>
44 #ifdef HAVE_TERMIOS_H
45 #include <termios.h>
46 #endif
47
48 #include "getopt_long.h"
49
50 #include "dumputils.h"
51 #include "parallel.h"
52 #include "pg_backup_utils.h"
53
54
55 static void usage(const char *progname);
56
57 typedef struct option optType;
58
59 int
main(int argc,char ** argv)60 main(int argc, char **argv)
61 {
62 RestoreOptions *opts;
63 int c;
64 int exit_code;
65 int numWorkers = 1;
66 Archive *AH;
67 char *inputFileSpec;
68 static int disable_triggers = 0;
69 static int enable_row_security = 0;
70 static int if_exists = 0;
71 static int no_data_for_failed_tables = 0;
72 static int outputNoTablespaces = 0;
73 static int use_setsessauth = 0;
74 static int no_comments = 0;
75 static int no_publications = 0;
76 static int no_security_labels = 0;
77 static int no_subscriptions = 0;
78 static int strict_names = 0;
79
80 struct option cmdopts[] = {
81 {"clean", 0, NULL, 'c'},
82 {"create", 0, NULL, 'C'},
83 {"data-only", 0, NULL, 'a'},
84 {"dbname", 1, NULL, 'd'},
85 {"exit-on-error", 0, NULL, 'e'},
86 {"exclude-schema", 1, NULL, 'N'},
87 {"file", 1, NULL, 'f'},
88 {"format", 1, NULL, 'F'},
89 {"function", 1, NULL, 'P'},
90 {"host", 1, NULL, 'h'},
91 {"index", 1, NULL, 'I'},
92 {"jobs", 1, NULL, 'j'},
93 {"list", 0, NULL, 'l'},
94 {"no-privileges", 0, NULL, 'x'},
95 {"no-acl", 0, NULL, 'x'},
96 {"no-owner", 0, NULL, 'O'},
97 {"no-reconnect", 0, NULL, 'R'},
98 {"port", 1, NULL, 'p'},
99 {"no-password", 0, NULL, 'w'},
100 {"password", 0, NULL, 'W'},
101 {"schema", 1, NULL, 'n'},
102 {"schema-only", 0, NULL, 's'},
103 {"superuser", 1, NULL, 'S'},
104 {"table", 1, NULL, 't'},
105 {"trigger", 1, NULL, 'T'},
106 {"use-list", 1, NULL, 'L'},
107 {"username", 1, NULL, 'U'},
108 {"verbose", 0, NULL, 'v'},
109 {"single-transaction", 0, NULL, '1'},
110
111 /*
112 * the following options don't have an equivalent short option letter
113 */
114 {"disable-triggers", no_argument, &disable_triggers, 1},
115 {"enable-row-security", no_argument, &enable_row_security, 1},
116 {"if-exists", no_argument, &if_exists, 1},
117 {"no-data-for-failed-tables", no_argument, &no_data_for_failed_tables, 1},
118 {"no-tablespaces", no_argument, &outputNoTablespaces, 1},
119 {"role", required_argument, NULL, 2},
120 {"section", required_argument, NULL, 3},
121 {"strict-names", no_argument, &strict_names, 1},
122 {"use-set-session-authorization", no_argument, &use_setsessauth, 1},
123 {"no-comments", no_argument, &no_comments, 1},
124 {"no-publications", no_argument, &no_publications, 1},
125 {"no-security-labels", no_argument, &no_security_labels, 1},
126 {"no-subscriptions", no_argument, &no_subscriptions, 1},
127
128 {NULL, 0, NULL, 0}
129 };
130
131 pg_logging_init(argv[0]);
132 pg_logging_set_level(PG_LOG_WARNING);
133 set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_dump"));
134
135 init_parallel_dump_utils();
136
137 opts = NewRestoreOptions();
138
139 progname = get_progname(argv[0]);
140
141 if (argc > 1)
142 {
143 if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
144 {
145 usage(progname);
146 exit_nicely(0);
147 }
148 if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
149 {
150 puts("pg_restore (PostgreSQL) " PG_VERSION);
151 exit_nicely(0);
152 }
153 }
154
155 while ((c = getopt_long(argc, argv, "acCd:ef:F:h:I:j:lL:n:N:Op:P:RsS:t:T:U:vwWx1",
156 cmdopts, NULL)) != -1)
157 {
158 switch (c)
159 {
160 case 'a': /* Dump data only */
161 opts->dataOnly = 1;
162 break;
163 case 'c': /* clean (i.e., drop) schema prior to create */
164 opts->dropSchema = 1;
165 break;
166 case 'C':
167 opts->createDB = 1;
168 break;
169 case 'd':
170 opts->cparams.dbname = pg_strdup(optarg);
171 break;
172 case 'e':
173 opts->exit_on_error = true;
174 break;
175 case 'f': /* output file name */
176 opts->filename = pg_strdup(optarg);
177 break;
178 case 'F':
179 if (strlen(optarg) != 0)
180 opts->formatName = pg_strdup(optarg);
181 break;
182 case 'h':
183 if (strlen(optarg) != 0)
184 opts->cparams.pghost = pg_strdup(optarg);
185 break;
186
187 case 'j': /* number of restore jobs */
188 numWorkers = atoi(optarg);
189 break;
190
191 case 'l': /* Dump the TOC summary */
192 opts->tocSummary = 1;
193 break;
194
195 case 'L': /* input TOC summary file name */
196 opts->tocFile = pg_strdup(optarg);
197 break;
198
199 case 'n': /* Dump data for this schema only */
200 simple_string_list_append(&opts->schemaNames, optarg);
201 break;
202
203 case 'N': /* Do not dump data for this schema */
204 simple_string_list_append(&opts->schemaExcludeNames, optarg);
205 break;
206
207 case 'O':
208 opts->noOwner = 1;
209 break;
210
211 case 'p':
212 if (strlen(optarg) != 0)
213 opts->cparams.pgport = pg_strdup(optarg);
214 break;
215 case 'R':
216 /* no-op, still accepted for backwards compatibility */
217 break;
218 case 'P': /* Function */
219 opts->selTypes = 1;
220 opts->selFunction = 1;
221 simple_string_list_append(&opts->functionNames, optarg);
222 break;
223 case 'I': /* Index */
224 opts->selTypes = 1;
225 opts->selIndex = 1;
226 simple_string_list_append(&opts->indexNames, optarg);
227 break;
228 case 'T': /* Trigger */
229 opts->selTypes = 1;
230 opts->selTrigger = 1;
231 simple_string_list_append(&opts->triggerNames, optarg);
232 break;
233 case 's': /* dump schema only */
234 opts->schemaOnly = 1;
235 break;
236 case 'S': /* Superuser username */
237 if (strlen(optarg) != 0)
238 opts->superuser = pg_strdup(optarg);
239 break;
240 case 't': /* Dump specified table(s) only */
241 opts->selTypes = 1;
242 opts->selTable = 1;
243 simple_string_list_append(&opts->tableNames, optarg);
244 break;
245
246 case 'U':
247 opts->cparams.username = pg_strdup(optarg);
248 break;
249
250 case 'v': /* verbose */
251 opts->verbose = 1;
252 pg_logging_set_level(PG_LOG_INFO);
253 break;
254
255 case 'w':
256 opts->cparams.promptPassword = TRI_NO;
257 break;
258
259 case 'W':
260 opts->cparams.promptPassword = TRI_YES;
261 break;
262
263 case 'x': /* skip ACL dump */
264 opts->aclsSkip = 1;
265 break;
266
267 case '1': /* Restore data in a single transaction */
268 opts->single_txn = true;
269 opts->exit_on_error = true;
270 break;
271
272 case 0:
273
274 /*
275 * This covers the long options without a short equivalent.
276 */
277 break;
278
279 case 2: /* SET ROLE */
280 opts->use_role = pg_strdup(optarg);
281 break;
282
283 case 3: /* section */
284 set_dump_section(optarg, &(opts->dumpSections));
285 break;
286
287 default:
288 fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
289 exit_nicely(1);
290 }
291 }
292
293 /* Get file name from command line */
294 if (optind < argc)
295 inputFileSpec = argv[optind++];
296 else
297 inputFileSpec = NULL;
298
299 /* Complain if any arguments remain */
300 if (optind < argc)
301 {
302 pg_log_error("too many command-line arguments (first is \"%s\")",
303 argv[optind]);
304 fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
305 progname);
306 exit_nicely(1);
307 }
308
309 /* Complain if neither -f nor -d was specified (except if dumping TOC) */
310 if (!opts->cparams.dbname && !opts->filename && !opts->tocSummary)
311 {
312 pg_log_error("one of -d/--dbname and -f/--file must be specified");
313 exit_nicely(1);
314 }
315
316 /* Should get at most one of -d and -f, else user is confused */
317 if (opts->cparams.dbname)
318 {
319 if (opts->filename)
320 {
321 pg_log_error("options -d/--dbname and -f/--file cannot be used together");
322 fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
323 progname);
324 exit_nicely(1);
325 }
326 opts->useDB = 1;
327 }
328
329 if (opts->dataOnly && opts->schemaOnly)
330 {
331 pg_log_error("options -s/--schema-only and -a/--data-only cannot be used together");
332 exit_nicely(1);
333 }
334
335 if (opts->dataOnly && opts->dropSchema)
336 {
337 pg_log_error("options -c/--clean and -a/--data-only cannot be used together");
338 exit_nicely(1);
339 }
340
341 /*
342 * -C is not compatible with -1, because we can't create a database inside
343 * a transaction block.
344 */
345 if (opts->createDB && opts->single_txn)
346 {
347 pg_log_error("options -C/--create and -1/--single-transaction cannot be used together");
348 exit_nicely(1);
349 }
350
351 if (numWorkers <= 0)
352 {
353 pg_log_error("invalid number of parallel jobs");
354 exit(1);
355 }
356
357 /* See comments in pg_dump.c */
358 #ifdef WIN32
359 if (numWorkers > MAXIMUM_WAIT_OBJECTS)
360 {
361 pg_log_error("maximum number of parallel jobs is %d",
362 MAXIMUM_WAIT_OBJECTS);
363 exit(1);
364 }
365 #endif
366
367 /* Can't do single-txn mode with multiple connections */
368 if (opts->single_txn && numWorkers > 1)
369 {
370 pg_log_error("cannot specify both --single-transaction and multiple jobs");
371 exit_nicely(1);
372 }
373
374 opts->disable_triggers = disable_triggers;
375 opts->enable_row_security = enable_row_security;
376 opts->noDataForFailedTables = no_data_for_failed_tables;
377 opts->noTablespace = outputNoTablespaces;
378 opts->use_setsessauth = use_setsessauth;
379 opts->no_comments = no_comments;
380 opts->no_publications = no_publications;
381 opts->no_security_labels = no_security_labels;
382 opts->no_subscriptions = no_subscriptions;
383
384 if (if_exists && !opts->dropSchema)
385 {
386 pg_log_error("option --if-exists requires option -c/--clean");
387 exit_nicely(1);
388 }
389 opts->if_exists = if_exists;
390 opts->strict_names = strict_names;
391
392 if (opts->formatName)
393 {
394 switch (opts->formatName[0])
395 {
396 case 'c':
397 case 'C':
398 opts->format = archCustom;
399 break;
400
401 case 'd':
402 case 'D':
403 opts->format = archDirectory;
404 break;
405
406 case 't':
407 case 'T':
408 opts->format = archTar;
409 break;
410
411 default:
412 pg_log_error("unrecognized archive format \"%s\"; please specify \"c\", \"d\", or \"t\"",
413 opts->formatName);
414 exit_nicely(1);
415 }
416 }
417
418 AH = OpenArchive(inputFileSpec, opts->format);
419
420 SetArchiveOptions(AH, NULL, opts);
421
422 /*
423 * We don't have a connection yet but that doesn't matter. The connection
424 * is initialized to NULL and if we terminate through exit_nicely() while
425 * it's still NULL, the cleanup function will just be a no-op.
426 */
427 on_exit_close_archive(AH);
428
429 /* Let the archiver know how noisy to be */
430 AH->verbose = opts->verbose;
431
432 /*
433 * Whether to keep submitting sql commands as "pg_restore ... | psql ... "
434 */
435 AH->exit_on_error = opts->exit_on_error;
436
437 if (opts->tocFile)
438 SortTocFromFile(AH);
439
440 AH->numWorkers = numWorkers;
441
442 if (opts->tocSummary)
443 PrintTOCSummary(AH);
444 else
445 {
446 ProcessArchiveRestoreOptions(AH);
447 RestoreArchive(AH);
448 }
449
450 /* done, print a summary of ignored errors */
451 if (AH->n_errors)
452 pg_log_warning("errors ignored on restore: %d", AH->n_errors);
453
454 /* AH may be freed in CloseArchive? */
455 exit_code = AH->n_errors ? 1 : 0;
456
457 CloseArchive(AH);
458
459 return exit_code;
460 }
461
462 static void
usage(const char * progname)463 usage(const char *progname)
464 {
465 printf(_("%s restores a PostgreSQL database from an archive created by pg_dump.\n\n"), progname);
466 printf(_("Usage:\n"));
467 printf(_(" %s [OPTION]... [FILE]\n"), progname);
468
469 printf(_("\nGeneral options:\n"));
470 printf(_(" -d, --dbname=NAME connect to database name\n"));
471 printf(_(" -f, --file=FILENAME output file name (- for stdout)\n"));
472 printf(_(" -F, --format=c|d|t backup file format (should be automatic)\n"));
473 printf(_(" -l, --list print summarized TOC of the archive\n"));
474 printf(_(" -v, --verbose verbose mode\n"));
475 printf(_(" -V, --version output version information, then exit\n"));
476 printf(_(" -?, --help show this help, then exit\n"));
477
478 printf(_("\nOptions controlling the restore:\n"));
479 printf(_(" -a, --data-only restore only the data, no schema\n"));
480 printf(_(" -c, --clean clean (drop) database objects before recreating\n"));
481 printf(_(" -C, --create create the target database\n"));
482 printf(_(" -e, --exit-on-error exit on error, default is to continue\n"));
483 printf(_(" -I, --index=NAME restore named index\n"));
484 printf(_(" -j, --jobs=NUM use this many parallel jobs to restore\n"));
485 printf(_(" -L, --use-list=FILENAME use table of contents from this file for\n"
486 " selecting/ordering output\n"));
487 printf(_(" -n, --schema=NAME restore only objects in this schema\n"));
488 printf(_(" -N, --exclude-schema=NAME do not restore objects in this schema\n"));
489 printf(_(" -O, --no-owner skip restoration of object ownership\n"));
490 printf(_(" -P, --function=NAME(args) restore named function\n"));
491 printf(_(" -s, --schema-only restore only the schema, no data\n"));
492 printf(_(" -S, --superuser=NAME superuser user name to use for disabling triggers\n"));
493 printf(_(" -t, --table=NAME restore named relation (table, view, etc.)\n"));
494 printf(_(" -T, --trigger=NAME restore named trigger\n"));
495 printf(_(" -x, --no-privileges skip restoration of access privileges (grant/revoke)\n"));
496 printf(_(" -1, --single-transaction restore as a single transaction\n"));
497 printf(_(" --disable-triggers disable triggers during data-only restore\n"));
498 printf(_(" --enable-row-security enable row security\n"));
499 printf(_(" --if-exists use IF EXISTS when dropping objects\n"));
500 printf(_(" --no-comments do not restore comments\n"));
501 printf(_(" --no-data-for-failed-tables do not restore data of tables that could not be\n"
502 " created\n"));
503 printf(_(" --no-publications do not restore publications\n"));
504 printf(_(" --no-security-labels do not restore security labels\n"));
505 printf(_(" --no-subscriptions do not restore subscriptions\n"));
506 printf(_(" --no-tablespaces do not restore tablespace assignments\n"));
507 printf(_(" --section=SECTION restore named section (pre-data, data, or post-data)\n"));
508 printf(_(" --strict-names require table and/or schema include patterns to\n"
509 " match at least one entity each\n"));
510 printf(_(" --use-set-session-authorization\n"
511 " use SET SESSION AUTHORIZATION commands instead of\n"
512 " ALTER OWNER commands to set ownership\n"));
513
514 printf(_("\nConnection options:\n"));
515 printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
516 printf(_(" -p, --port=PORT database server port number\n"));
517 printf(_(" -U, --username=NAME connect as specified database user\n"));
518 printf(_(" -w, --no-password never prompt for password\n"));
519 printf(_(" -W, --password force password prompt (should happen automatically)\n"));
520 printf(_(" --role=ROLENAME do SET ROLE before restore\n"));
521
522 printf(_("\n"
523 "The options -I, -n, -N, -P, -t, -T, and --section can be combined and specified\n"
524 "multiple times to select multiple objects.\n"));
525 printf(_("\nIf no input file name is supplied, then standard input is used.\n\n"));
526 printf(_("Report bugs to <pgsql-bugs@lists.postgresql.org>.\n"));
527 }
528