Line data Source code
1 : /*
2 : * check.c
3 : *
4 : * server checks and output routines
5 : *
6 : * Copyright (c) 2010-2020, PostgreSQL Global Development Group
7 : * src/bin/pg_upgrade/check.c
8 : */
9 :
10 : #include "postgres_fe.h"
11 :
12 : #include "catalog/pg_authid_d.h"
13 : #include "fe_utils/string_utils.h"
14 : #include "mb/pg_wchar.h"
15 : #include "pg_upgrade.h"
16 :
17 : static void check_new_cluster_is_empty(void);
18 : static void check_databases_are_compatible(void);
19 : static void check_locale_and_encoding(DbInfo *olddb, DbInfo *newdb);
20 : static bool equivalent_locale(int category, const char *loca, const char *locb);
21 : static void check_is_install_user(ClusterInfo *cluster);
22 : static void check_proper_datallowconn(ClusterInfo *cluster);
23 : static void check_for_prepared_transactions(ClusterInfo *cluster);
24 : static void check_for_isn_and_int8_passing_mismatch(ClusterInfo *cluster);
25 : static void check_for_tables_with_oids(ClusterInfo *cluster);
26 : static void check_for_reg_data_type_usage(ClusterInfo *cluster);
27 : static void check_for_jsonb_9_4_usage(ClusterInfo *cluster);
28 : static void check_for_pg_role_prefix(ClusterInfo *cluster);
29 : static char *get_canonical_locale_name(int category, const char *locale);
30 :
31 :
32 : /*
33 : * fix_path_separator
34 : * For non-Windows, just return the argument.
35 : * For Windows convert any forward slash to a backslash
36 : * such as is suitable for arguments to builtin commands
37 : * like RMDIR and DEL.
38 : */
39 : static char *
40 2 : fix_path_separator(char *path)
41 : {
42 : #ifdef WIN32
43 :
44 : char *result;
45 : char *c;
46 :
47 : result = pg_strdup(path);
48 :
49 : for (c = result; *c != '\0'; c++)
50 : if (*c == '/')
51 : *c = '\\';
52 :
53 : return result;
54 : #else
55 :
56 2 : return path;
57 : #endif
58 : }
59 :
60 : void
61 2 : output_check_banner(bool live_check)
62 : {
63 2 : if (user_opts.check && live_check)
64 : {
65 0 : pg_log(PG_REPORT,
66 : "Performing Consistency Checks on Old Live Server\n"
67 : "------------------------------------------------\n");
68 : }
69 : else
70 : {
71 2 : pg_log(PG_REPORT,
72 : "Performing Consistency Checks\n"
73 : "-----------------------------\n");
74 : }
75 2 : }
76 :
77 :
78 : void
79 2 : check_and_dump_old_cluster(bool live_check)
80 : {
81 : /* -- OLD -- */
82 :
83 2 : if (!live_check)
84 2 : start_postmaster(&old_cluster, true);
85 :
86 : /* Extract a list of databases and tables from the old cluster */
87 2 : get_db_and_rel_infos(&old_cluster);
88 :
89 2 : init_tablespaces();
90 :
91 2 : get_loadable_libraries();
92 :
93 :
94 : /*
95 : * Check for various failure cases
96 : */
97 2 : check_is_install_user(&old_cluster);
98 2 : check_proper_datallowconn(&old_cluster);
99 2 : check_for_prepared_transactions(&old_cluster);
100 2 : check_for_reg_data_type_usage(&old_cluster);
101 2 : check_for_isn_and_int8_passing_mismatch(&old_cluster);
102 :
103 : /*
104 : * Pre-PG 12 allowed tables to be declared WITH OIDS, which is not
105 : * supported anymore. Verify there are none, iff applicable.
106 : */
107 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 1100)
108 0 : check_for_tables_with_oids(&old_cluster);
109 :
110 : /*
111 : * PG 12 changed the 'sql_identifier' type storage to be based on name,
112 : * not varchar, which breaks on-disk format for existing data. So we need
113 : * to prevent upgrade when used in user objects (tables, indexes, ...).
114 : */
115 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 1100)
116 0 : old_11_check_for_sql_identifier_data_type_usage(&old_cluster);
117 :
118 : /*
119 : * Pre-PG 10 allowed tables with 'unknown' type columns and non WAL logged
120 : * hash indexes
121 : */
122 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 906)
123 : {
124 0 : old_9_6_check_for_unknown_data_type_usage(&old_cluster);
125 0 : if (user_opts.check)
126 0 : old_9_6_invalidate_hash_indexes(&old_cluster, true);
127 : }
128 :
129 : /* 9.5 and below should not have roles starting with pg_ */
130 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 905)
131 0 : check_for_pg_role_prefix(&old_cluster);
132 :
133 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) == 904 &&
134 0 : old_cluster.controldata.cat_ver < JSONB_FORMAT_CHANGE_CAT_VER)
135 0 : check_for_jsonb_9_4_usage(&old_cluster);
136 :
137 : /* Pre-PG 9.4 had a different 'line' data type internal format */
138 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 903)
139 0 : old_9_3_check_for_line_data_type_usage(&old_cluster);
140 :
141 : /* Pre-PG 9.0 had no large object permissions */
142 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 804)
143 0 : new_9_0_populate_pg_largeobject_metadata(&old_cluster, true);
144 :
145 : /*
146 : * While not a check option, we do this now because this is the only time
147 : * the old server is running.
148 : */
149 2 : if (!user_opts.check)
150 2 : generate_old_dump();
151 :
152 2 : if (!live_check)
153 2 : stop_postmaster(false);
154 2 : }
155 :
156 :
157 : void
158 2 : check_new_cluster(void)
159 : {
160 2 : get_db_and_rel_infos(&new_cluster);
161 :
162 2 : check_new_cluster_is_empty();
163 2 : check_databases_are_compatible();
164 :
165 2 : check_loadable_libraries();
166 :
167 2 : switch (user_opts.transfer_mode)
168 : {
169 0 : case TRANSFER_MODE_CLONE:
170 0 : check_file_clone();
171 0 : break;
172 2 : case TRANSFER_MODE_COPY:
173 2 : break;
174 0 : case TRANSFER_MODE_LINK:
175 0 : check_hard_link();
176 0 : break;
177 : }
178 :
179 2 : check_is_install_user(&new_cluster);
180 :
181 2 : check_for_prepared_transactions(&new_cluster);
182 2 : }
183 :
184 :
185 : void
186 2 : report_clusters_compatible(void)
187 : {
188 2 : if (user_opts.check)
189 : {
190 0 : pg_log(PG_REPORT, "\n*Clusters are compatible*\n");
191 : /* stops new cluster */
192 0 : stop_postmaster(false);
193 0 : exit(0);
194 : }
195 :
196 2 : pg_log(PG_REPORT, "\n"
197 : "If pg_upgrade fails after this point, you must re-initdb the\n"
198 : "new cluster before continuing.\n");
199 2 : }
200 :
201 :
202 : void
203 2 : issue_warnings_and_set_wal_level(void)
204 : {
205 : /*
206 : * We unconditionally start/stop the new server because pg_resetwal -o set
207 : * wal_level to 'minimum'. If the user is upgrading standby servers using
208 : * the rsync instructions, they will need pg_upgrade to write its final
209 : * WAL record showing wal_level as 'replica'.
210 : */
211 2 : start_postmaster(&new_cluster, true);
212 :
213 : /* Create dummy large object permissions for old < PG 9.0? */
214 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 804)
215 0 : new_9_0_populate_pg_largeobject_metadata(&new_cluster, false);
216 :
217 : /* Reindex hash indexes for old < 10.0 */
218 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 906)
219 0 : old_9_6_invalidate_hash_indexes(&new_cluster, false);
220 :
221 2 : stop_postmaster(false);
222 2 : }
223 :
224 :
225 : void
226 2 : output_completion_banner(char *analyze_script_file_name,
227 : char *deletion_script_file_name)
228 : {
229 : /* Did we copy the free space files? */
230 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) >= 804)
231 2 : pg_log(PG_REPORT,
232 : "Optimizer statistics are not transferred by pg_upgrade so,\n"
233 : "once you start the new server, consider running:\n"
234 : " %s\n\n", analyze_script_file_name);
235 : else
236 0 : pg_log(PG_REPORT,
237 : "Optimizer statistics and free space information are not transferred\n"
238 : "by pg_upgrade so, once you start the new server, consider running:\n"
239 : " %s\n\n", analyze_script_file_name);
240 :
241 :
242 2 : if (deletion_script_file_name)
243 2 : pg_log(PG_REPORT,
244 : "Running this script will delete the old cluster's data files:\n"
245 : " %s\n",
246 : deletion_script_file_name);
247 : else
248 0 : pg_log(PG_REPORT,
249 : "Could not create a script to delete the old cluster's data files\n"
250 : "because user-defined tablespaces or the new cluster's data directory\n"
251 : "exist in the old cluster directory. The old cluster's contents must\n"
252 : "be deleted manually.\n");
253 2 : }
254 :
255 :
256 : void
257 2 : check_cluster_versions(void)
258 : {
259 2 : prep_status("Checking cluster versions");
260 :
261 : /* cluster versions should already have been obtained */
262 : Assert(old_cluster.major_version != 0);
263 : Assert(new_cluster.major_version != 0);
264 :
265 : /*
266 : * We allow upgrades from/to the same major version for alpha/beta
267 : * upgrades
268 : */
269 :
270 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) < 804)
271 0 : pg_fatal("This utility can only upgrade from PostgreSQL version 8.4 and later.\n");
272 :
273 : /* Only current PG version is supported as a target */
274 2 : if (GET_MAJOR_VERSION(new_cluster.major_version) != GET_MAJOR_VERSION(PG_VERSION_NUM))
275 0 : pg_fatal("This utility can only upgrade to PostgreSQL version %s.\n",
276 : PG_MAJORVERSION);
277 :
278 : /*
279 : * We can't allow downgrading because we use the target pg_dump, and
280 : * pg_dump cannot operate on newer database versions, only current and
281 : * older versions.
282 : */
283 2 : if (old_cluster.major_version > new_cluster.major_version)
284 0 : pg_fatal("This utility cannot be used to downgrade to older major PostgreSQL versions.\n");
285 :
286 : /* Ensure binaries match the designated data directories */
287 4 : if (GET_MAJOR_VERSION(old_cluster.major_version) !=
288 2 : GET_MAJOR_VERSION(old_cluster.bin_version))
289 0 : pg_fatal("Old cluster data and binary directories are from different major versions.\n");
290 4 : if (GET_MAJOR_VERSION(new_cluster.major_version) !=
291 2 : GET_MAJOR_VERSION(new_cluster.bin_version))
292 0 : pg_fatal("New cluster data and binary directories are from different major versions.\n");
293 :
294 2 : check_ok();
295 2 : }
296 :
297 :
298 : void
299 2 : check_cluster_compatibility(bool live_check)
300 : {
301 : /* get/check pg_control data of servers */
302 2 : get_control_data(&old_cluster, live_check);
303 2 : get_control_data(&new_cluster, false);
304 2 : check_control_data(&old_cluster.controldata, &new_cluster.controldata);
305 :
306 : /* We read the real port number for PG >= 9.1 */
307 2 : if (live_check && GET_MAJOR_VERSION(old_cluster.major_version) < 901 &&
308 0 : old_cluster.port == DEF_PGUPORT)
309 0 : pg_fatal("When checking a pre-PG 9.1 live old server, "
310 : "you must specify the old server's port number.\n");
311 :
312 2 : if (live_check && old_cluster.port == new_cluster.port)
313 0 : pg_fatal("When checking a live server, "
314 : "the old and new port numbers must be different.\n");
315 2 : }
316 :
317 :
318 : /*
319 : * check_locale_and_encoding()
320 : *
321 : * Check that locale and encoding of a database in the old and new clusters
322 : * are compatible.
323 : */
324 : static void
325 4 : check_locale_and_encoding(DbInfo *olddb, DbInfo *newdb)
326 : {
327 4 : if (olddb->db_encoding != newdb->db_encoding)
328 0 : pg_fatal("encodings for database \"%s\" do not match: old \"%s\", new \"%s\"\n",
329 : olddb->db_name,
330 : pg_encoding_to_char(olddb->db_encoding),
331 : pg_encoding_to_char(newdb->db_encoding));
332 4 : if (!equivalent_locale(LC_COLLATE, olddb->db_collate, newdb->db_collate))
333 0 : pg_fatal("lc_collate values for database \"%s\" do not match: old \"%s\", new \"%s\"\n",
334 : olddb->db_name, olddb->db_collate, newdb->db_collate);
335 4 : if (!equivalent_locale(LC_CTYPE, olddb->db_ctype, newdb->db_ctype))
336 0 : pg_fatal("lc_ctype values for database \"%s\" do not match: old \"%s\", new \"%s\"\n",
337 : olddb->db_name, olddb->db_ctype, newdb->db_ctype);
338 4 : }
339 :
340 : /*
341 : * equivalent_locale()
342 : *
343 : * Best effort locale-name comparison. Return false if we are not 100% sure
344 : * the locales are equivalent.
345 : *
346 : * Note: The encoding parts of the names are ignored. This function is
347 : * currently used to compare locale names stored in pg_database, and
348 : * pg_database contains a separate encoding field. That's compared directly
349 : * in check_locale_and_encoding().
350 : */
351 : static bool
352 8 : equivalent_locale(int category, const char *loca, const char *locb)
353 : {
354 : const char *chara;
355 : const char *charb;
356 : char *canona;
357 : char *canonb;
358 : int lena;
359 : int lenb;
360 :
361 : /*
362 : * If the names are equal, the locales are equivalent. Checking this first
363 : * avoids calling setlocale() in the common case that the names are equal.
364 : * That's a good thing, if setlocale() is buggy, for example.
365 : */
366 8 : if (pg_strcasecmp(loca, locb) == 0)
367 8 : return true;
368 :
369 : /*
370 : * Not identical. Canonicalize both names, remove the encoding parts, and
371 : * try again.
372 : */
373 0 : canona = get_canonical_locale_name(category, loca);
374 0 : chara = strrchr(canona, '.');
375 0 : lena = chara ? (chara - canona) : strlen(canona);
376 :
377 0 : canonb = get_canonical_locale_name(category, locb);
378 0 : charb = strrchr(canonb, '.');
379 0 : lenb = charb ? (charb - canonb) : strlen(canonb);
380 :
381 0 : if (lena == lenb && pg_strncasecmp(canona, canonb, lena) == 0)
382 : {
383 0 : pg_free(canona);
384 0 : pg_free(canonb);
385 0 : return true;
386 : }
387 :
388 0 : pg_free(canona);
389 0 : pg_free(canonb);
390 0 : return false;
391 : }
392 :
393 :
394 : static void
395 2 : check_new_cluster_is_empty(void)
396 : {
397 : int dbnum;
398 :
399 6 : for (dbnum = 0; dbnum < new_cluster.dbarr.ndbs; dbnum++)
400 : {
401 : int relnum;
402 4 : RelInfoArr *rel_arr = &new_cluster.dbarr.dbs[dbnum].rel_arr;
403 :
404 12 : for (relnum = 0; relnum < rel_arr->nrels;
405 8 : relnum++)
406 : {
407 : /* pg_largeobject and its index should be skipped */
408 8 : if (strcmp(rel_arr->rels[relnum].nspname, "pg_catalog") != 0)
409 0 : pg_fatal("New cluster database \"%s\" is not empty: found relation \"%s.%s\"\n",
410 0 : new_cluster.dbarr.dbs[dbnum].db_name,
411 0 : rel_arr->rels[relnum].nspname,
412 0 : rel_arr->rels[relnum].relname);
413 : }
414 : }
415 2 : }
416 :
417 : /*
418 : * Check that every database that already exists in the new cluster is
419 : * compatible with the corresponding database in the old one.
420 : */
421 : static void
422 2 : check_databases_are_compatible(void)
423 : {
424 : int newdbnum;
425 : int olddbnum;
426 : DbInfo *newdbinfo;
427 : DbInfo *olddbinfo;
428 :
429 6 : for (newdbnum = 0; newdbnum < new_cluster.dbarr.ndbs; newdbnum++)
430 : {
431 4 : newdbinfo = &new_cluster.dbarr.dbs[newdbnum];
432 :
433 : /* Find the corresponding database in the old cluster */
434 14 : for (olddbnum = 0; olddbnum < old_cluster.dbarr.ndbs; olddbnum++)
435 : {
436 14 : olddbinfo = &old_cluster.dbarr.dbs[olddbnum];
437 14 : if (strcmp(newdbinfo->db_name, olddbinfo->db_name) == 0)
438 : {
439 4 : check_locale_and_encoding(olddbinfo, newdbinfo);
440 4 : break;
441 : }
442 : }
443 : }
444 2 : }
445 :
446 :
447 : /*
448 : * create_script_for_cluster_analyze()
449 : *
450 : * This incrementally generates better optimizer statistics
451 : */
452 : void
453 2 : create_script_for_cluster_analyze(char **analyze_script_file_name)
454 : {
455 2 : FILE *script = NULL;
456 : PQExpBufferData user_specification;
457 :
458 2 : prep_status("Creating script to analyze new cluster");
459 :
460 2 : initPQExpBuffer(&user_specification);
461 2 : if (os_info.user_specified)
462 : {
463 0 : appendPQExpBufferStr(&user_specification, "-U ");
464 0 : appendShellString(&user_specification, os_info.user);
465 0 : appendPQExpBufferChar(&user_specification, ' ');
466 : }
467 :
468 2 : *analyze_script_file_name = psprintf("%sanalyze_new_cluster.%s",
469 : SCRIPT_PREFIX, SCRIPT_EXT);
470 :
471 2 : if ((script = fopen_priv(*analyze_script_file_name, "w")) == NULL)
472 0 : pg_fatal("could not open file \"%s\": %s\n",
473 0 : *analyze_script_file_name, strerror(errno));
474 :
475 : #ifndef WIN32
476 : /* add shebang header */
477 2 : fprintf(script, "#!/bin/sh\n\n");
478 : #else
479 : /* suppress command echoing */
480 : fprintf(script, "@echo off\n");
481 : #endif
482 :
483 2 : fprintf(script, "echo %sThis script will generate minimal optimizer statistics rapidly%s\n",
484 : ECHO_QUOTE, ECHO_QUOTE);
485 2 : fprintf(script, "echo %sso your system is usable, and then gather statistics twice more%s\n",
486 : ECHO_QUOTE, ECHO_QUOTE);
487 2 : fprintf(script, "echo %swith increasing accuracy. When it is done, your system will%s\n",
488 : ECHO_QUOTE, ECHO_QUOTE);
489 2 : fprintf(script, "echo %shave the default level of optimizer statistics.%s\n",
490 : ECHO_QUOTE, ECHO_QUOTE);
491 2 : fprintf(script, "echo%s\n\n", ECHO_BLANK);
492 :
493 2 : fprintf(script, "echo %sIf you have used ALTER TABLE to modify the statistics target for%s\n",
494 : ECHO_QUOTE, ECHO_QUOTE);
495 2 : fprintf(script, "echo %sany tables, you might want to remove them and restore them after%s\n",
496 : ECHO_QUOTE, ECHO_QUOTE);
497 2 : fprintf(script, "echo %srunning this script because they will delay fast statistics generation.%s\n",
498 : ECHO_QUOTE, ECHO_QUOTE);
499 2 : fprintf(script, "echo%s\n\n", ECHO_BLANK);
500 :
501 2 : fprintf(script, "echo %sIf you would like default statistics as quickly as possible, cancel%s\n",
502 : ECHO_QUOTE, ECHO_QUOTE);
503 2 : fprintf(script, "echo %sthis script and run:%s\n",
504 : ECHO_QUOTE, ECHO_QUOTE);
505 2 : fprintf(script, "echo %s \"%s/vacuumdb\" %s--all %s%s\n", ECHO_QUOTE,
506 : new_cluster.bindir, user_specification.data,
507 : /* Did we copy the free space files? */
508 2 : (GET_MAJOR_VERSION(old_cluster.major_version) >= 804) ?
509 : "--analyze-only" : "--analyze", ECHO_QUOTE);
510 2 : fprintf(script, "echo%s\n\n", ECHO_BLANK);
511 :
512 2 : fprintf(script, "\"%s/vacuumdb\" %s--all --analyze-in-stages\n",
513 : new_cluster.bindir, user_specification.data);
514 : /* Did we copy the free space files? */
515 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) < 804)
516 0 : fprintf(script, "\"%s/vacuumdb\" %s--all\n", new_cluster.bindir,
517 : user_specification.data);
518 :
519 2 : fprintf(script, "echo%s\n\n", ECHO_BLANK);
520 2 : fprintf(script, "echo %sDone%s\n",
521 : ECHO_QUOTE, ECHO_QUOTE);
522 :
523 2 : fclose(script);
524 :
525 : #ifndef WIN32
526 2 : if (chmod(*analyze_script_file_name, S_IRWXU) != 0)
527 0 : pg_fatal("could not add execute permission to file \"%s\": %s\n",
528 0 : *analyze_script_file_name, strerror(errno));
529 : #endif
530 :
531 2 : termPQExpBuffer(&user_specification);
532 :
533 2 : check_ok();
534 2 : }
535 :
536 :
537 : /*
538 : * create_script_for_old_cluster_deletion()
539 : *
540 : * This is particularly useful for tablespace deletion.
541 : */
542 : void
543 2 : create_script_for_old_cluster_deletion(char **deletion_script_file_name)
544 : {
545 2 : FILE *script = NULL;
546 : int tblnum;
547 : char old_cluster_pgdata[MAXPGPATH],
548 : new_cluster_pgdata[MAXPGPATH];
549 :
550 2 : *deletion_script_file_name = psprintf("%sdelete_old_cluster.%s",
551 : SCRIPT_PREFIX, SCRIPT_EXT);
552 :
553 2 : strlcpy(old_cluster_pgdata, old_cluster.pgdata, MAXPGPATH);
554 2 : canonicalize_path(old_cluster_pgdata);
555 :
556 2 : strlcpy(new_cluster_pgdata, new_cluster.pgdata, MAXPGPATH);
557 2 : canonicalize_path(new_cluster_pgdata);
558 :
559 : /* Some people put the new data directory inside the old one. */
560 2 : if (path_is_prefix_of_path(old_cluster_pgdata, new_cluster_pgdata))
561 : {
562 0 : pg_log(PG_WARNING,
563 : "\nWARNING: new data directory should not be inside the old data directory, e.g. %s\n", old_cluster_pgdata);
564 :
565 : /* Unlink file in case it is left over from a previous run. */
566 0 : unlink(*deletion_script_file_name);
567 0 : pg_free(*deletion_script_file_name);
568 0 : *deletion_script_file_name = NULL;
569 0 : return;
570 : }
571 :
572 : /*
573 : * Some users (oddly) create tablespaces inside the cluster data
574 : * directory. We can't create a proper old cluster delete script in that
575 : * case.
576 : */
577 2 : for (tblnum = 0; tblnum < os_info.num_old_tablespaces; tblnum++)
578 : {
579 : char old_tablespace_dir[MAXPGPATH];
580 :
581 0 : strlcpy(old_tablespace_dir, os_info.old_tablespaces[tblnum], MAXPGPATH);
582 0 : canonicalize_path(old_tablespace_dir);
583 0 : if (path_is_prefix_of_path(old_cluster_pgdata, old_tablespace_dir))
584 : {
585 : /* reproduce warning from CREATE TABLESPACE that is in the log */
586 0 : pg_log(PG_WARNING,
587 : "\nWARNING: user-defined tablespace locations should not be inside the data directory, e.g. %s\n", old_tablespace_dir);
588 :
589 : /* Unlink file in case it is left over from a previous run. */
590 0 : unlink(*deletion_script_file_name);
591 0 : pg_free(*deletion_script_file_name);
592 0 : *deletion_script_file_name = NULL;
593 0 : return;
594 : }
595 : }
596 :
597 2 : prep_status("Creating script to delete old cluster");
598 :
599 2 : if ((script = fopen_priv(*deletion_script_file_name, "w")) == NULL)
600 0 : pg_fatal("could not open file \"%s\": %s\n",
601 0 : *deletion_script_file_name, strerror(errno));
602 :
603 : #ifndef WIN32
604 : /* add shebang header */
605 2 : fprintf(script, "#!/bin/sh\n\n");
606 : #endif
607 :
608 : /* delete old cluster's default tablespace */
609 2 : fprintf(script, RMDIR_CMD " %c%s%c\n", PATH_QUOTE,
610 : fix_path_separator(old_cluster.pgdata), PATH_QUOTE);
611 :
612 : /* delete old cluster's alternate tablespaces */
613 2 : for (tblnum = 0; tblnum < os_info.num_old_tablespaces; tblnum++)
614 : {
615 : /*
616 : * Do the old cluster's per-database directories share a directory
617 : * with a new version-specific tablespace?
618 : */
619 0 : if (strlen(old_cluster.tablespace_suffix) == 0)
620 : {
621 : /* delete per-database directories */
622 : int dbnum;
623 :
624 0 : fprintf(script, "\n");
625 : /* remove PG_VERSION? */
626 0 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 804)
627 0 : fprintf(script, RM_CMD " %s%cPG_VERSION\n",
628 0 : fix_path_separator(os_info.old_tablespaces[tblnum]),
629 : PATH_SEPARATOR);
630 :
631 0 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
632 0 : fprintf(script, RMDIR_CMD " %c%s%c%d%c\n", PATH_QUOTE,
633 0 : fix_path_separator(os_info.old_tablespaces[tblnum]),
634 0 : PATH_SEPARATOR, old_cluster.dbarr.dbs[dbnum].db_oid,
635 : PATH_QUOTE);
636 : }
637 : else
638 : {
639 0 : char *suffix_path = pg_strdup(old_cluster.tablespace_suffix);
640 :
641 : /*
642 : * Simply delete the tablespace directory, which might be ".old"
643 : * or a version-specific subdirectory.
644 : */
645 0 : fprintf(script, RMDIR_CMD " %c%s%s%c\n", PATH_QUOTE,
646 0 : fix_path_separator(os_info.old_tablespaces[tblnum]),
647 : fix_path_separator(suffix_path), PATH_QUOTE);
648 0 : pfree(suffix_path);
649 : }
650 : }
651 :
652 2 : fclose(script);
653 :
654 : #ifndef WIN32
655 2 : if (chmod(*deletion_script_file_name, S_IRWXU) != 0)
656 0 : pg_fatal("could not add execute permission to file \"%s\": %s\n",
657 0 : *deletion_script_file_name, strerror(errno));
658 : #endif
659 :
660 2 : check_ok();
661 : }
662 :
663 :
664 : /*
665 : * check_is_install_user()
666 : *
667 : * Check we are the install user, and that the new cluster
668 : * has no other users.
669 : */
670 : static void
671 4 : check_is_install_user(ClusterInfo *cluster)
672 : {
673 : PGresult *res;
674 4 : PGconn *conn = connectToServer(cluster, "template1");
675 :
676 4 : prep_status("Checking database user is the install user");
677 :
678 : /* Can't use pg_authid because only superusers can view it. */
679 4 : res = executeQueryOrDie(conn,
680 : "SELECT rolsuper, oid "
681 : "FROM pg_catalog.pg_roles "
682 : "WHERE rolname = current_user "
683 : "AND rolname !~ '^pg_'");
684 :
685 : /*
686 : * We only allow the install user in the new cluster (see comment below)
687 : * and we preserve pg_authid.oid, so this must be the install user in the
688 : * old cluster too.
689 : */
690 4 : if (PQntuples(res) != 1 ||
691 4 : atooid(PQgetvalue(res, 0, 1)) != BOOTSTRAP_SUPERUSERID)
692 0 : pg_fatal("database user \"%s\" is not the install user\n",
693 : os_info.user);
694 :
695 4 : PQclear(res);
696 :
697 4 : res = executeQueryOrDie(conn,
698 : "SELECT COUNT(*) "
699 : "FROM pg_catalog.pg_roles "
700 : "WHERE rolname !~ '^pg_'");
701 :
702 4 : if (PQntuples(res) != 1)
703 0 : pg_fatal("could not determine the number of users\n");
704 :
705 : /*
706 : * We only allow the install user in the new cluster because other defined
707 : * users might match users defined in the old cluster and generate an
708 : * error during pg_dump restore.
709 : */
710 4 : if (cluster == &new_cluster && atooid(PQgetvalue(res, 0, 0)) != 1)
711 0 : pg_fatal("Only the install user can be defined in the new cluster.\n");
712 :
713 4 : PQclear(res);
714 :
715 4 : PQfinish(conn);
716 :
717 4 : check_ok();
718 4 : }
719 :
720 :
721 : static void
722 2 : check_proper_datallowconn(ClusterInfo *cluster)
723 : {
724 : int dbnum;
725 : PGconn *conn_template1;
726 : PGresult *dbres;
727 : int ntups;
728 : int i_datname;
729 : int i_datallowconn;
730 :
731 2 : prep_status("Checking database connection settings");
732 :
733 2 : conn_template1 = connectToServer(cluster, "template1");
734 :
735 : /* get database names */
736 2 : dbres = executeQueryOrDie(conn_template1,
737 : "SELECT datname, datallowconn "
738 : "FROM pg_catalog.pg_database");
739 :
740 2 : i_datname = PQfnumber(dbres, "datname");
741 2 : i_datallowconn = PQfnumber(dbres, "datallowconn");
742 :
743 2 : ntups = PQntuples(dbres);
744 16 : for (dbnum = 0; dbnum < ntups; dbnum++)
745 : {
746 14 : char *datname = PQgetvalue(dbres, dbnum, i_datname);
747 14 : char *datallowconn = PQgetvalue(dbres, dbnum, i_datallowconn);
748 :
749 14 : if (strcmp(datname, "template0") == 0)
750 : {
751 : /* avoid restore failure when pg_dumpall tries to create template0 */
752 2 : if (strcmp(datallowconn, "t") == 0)
753 0 : pg_fatal("template0 must not allow connections, "
754 : "i.e. its pg_database.datallowconn must be false\n");
755 : }
756 : else
757 : {
758 : /*
759 : * avoid datallowconn == false databases from being skipped on
760 : * restore
761 : */
762 12 : if (strcmp(datallowconn, "f") == 0)
763 0 : pg_fatal("All non-template0 databases must allow connections, "
764 : "i.e. their pg_database.datallowconn must be true\n");
765 : }
766 : }
767 :
768 2 : PQclear(dbres);
769 :
770 2 : PQfinish(conn_template1);
771 :
772 2 : check_ok();
773 2 : }
774 :
775 :
776 : /*
777 : * check_for_prepared_transactions()
778 : *
779 : * Make sure there are no prepared transactions because the storage format
780 : * might have changed.
781 : */
782 : static void
783 4 : check_for_prepared_transactions(ClusterInfo *cluster)
784 : {
785 : PGresult *res;
786 4 : PGconn *conn = connectToServer(cluster, "template1");
787 :
788 4 : prep_status("Checking for prepared transactions");
789 :
790 4 : res = executeQueryOrDie(conn,
791 : "SELECT * "
792 : "FROM pg_catalog.pg_prepared_xacts");
793 :
794 4 : if (PQntuples(res) != 0)
795 : {
796 0 : if (cluster == &old_cluster)
797 0 : pg_fatal("The source cluster contains prepared transactions\n");
798 : else
799 0 : pg_fatal("The target cluster contains prepared transactions\n");
800 : }
801 :
802 4 : PQclear(res);
803 :
804 4 : PQfinish(conn);
805 :
806 4 : check_ok();
807 4 : }
808 :
809 :
810 : /*
811 : * check_for_isn_and_int8_passing_mismatch()
812 : *
813 : * contrib/isn relies on data type int8, and in 8.4 int8 can now be passed
814 : * by value. The schema dumps the CREATE TYPE PASSEDBYVALUE setting so
815 : * it must match for the old and new servers.
816 : */
817 : static void
818 2 : check_for_isn_and_int8_passing_mismatch(ClusterInfo *cluster)
819 : {
820 : int dbnum;
821 2 : FILE *script = NULL;
822 2 : bool found = false;
823 : char output_path[MAXPGPATH];
824 :
825 2 : prep_status("Checking for contrib/isn with bigint-passing mismatch");
826 :
827 4 : if (old_cluster.controldata.float8_pass_by_value ==
828 2 : new_cluster.controldata.float8_pass_by_value)
829 : {
830 : /* no mismatch */
831 2 : check_ok();
832 2 : return;
833 : }
834 :
835 0 : snprintf(output_path, sizeof(output_path),
836 : "contrib_isn_and_int8_pass_by_value.txt");
837 :
838 0 : for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
839 : {
840 : PGresult *res;
841 0 : bool db_used = false;
842 : int ntups;
843 : int rowno;
844 : int i_nspname,
845 : i_proname;
846 0 : DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
847 0 : PGconn *conn = connectToServer(cluster, active_db->db_name);
848 :
849 : /* Find any functions coming from contrib/isn */
850 0 : res = executeQueryOrDie(conn,
851 : "SELECT n.nspname, p.proname "
852 : "FROM pg_catalog.pg_proc p, "
853 : " pg_catalog.pg_namespace n "
854 : "WHERE p.pronamespace = n.oid AND "
855 : " p.probin = '$libdir/isn'");
856 :
857 0 : ntups = PQntuples(res);
858 0 : i_nspname = PQfnumber(res, "nspname");
859 0 : i_proname = PQfnumber(res, "proname");
860 0 : for (rowno = 0; rowno < ntups; rowno++)
861 : {
862 0 : found = true;
863 0 : if (script == NULL && (script = fopen_priv(output_path, "w")) == NULL)
864 0 : pg_fatal("could not open file \"%s\": %s\n",
865 0 : output_path, strerror(errno));
866 0 : if (!db_used)
867 : {
868 0 : fprintf(script, "In database: %s\n", active_db->db_name);
869 0 : db_used = true;
870 : }
871 0 : fprintf(script, " %s.%s\n",
872 : PQgetvalue(res, rowno, i_nspname),
873 : PQgetvalue(res, rowno, i_proname));
874 : }
875 :
876 0 : PQclear(res);
877 :
878 0 : PQfinish(conn);
879 : }
880 :
881 0 : if (script)
882 0 : fclose(script);
883 :
884 0 : if (found)
885 : {
886 0 : pg_log(PG_REPORT, "fatal\n");
887 0 : pg_fatal("Your installation contains \"contrib/isn\" functions which rely on the\n"
888 : "bigint data type. Your old and new clusters pass bigint values\n"
889 : "differently so this cluster cannot currently be upgraded. You can\n"
890 : "manually dump databases in the old cluster that use \"contrib/isn\"\n"
891 : "facilities, drop them, perform the upgrade, and then restore them. A\n"
892 : "list of the problem functions is in the file:\n"
893 : " %s\n\n", output_path);
894 : }
895 : else
896 0 : check_ok();
897 : }
898 :
899 :
900 : /*
901 : * Verify that no tables are declared WITH OIDS.
902 : */
903 : static void
904 0 : check_for_tables_with_oids(ClusterInfo *cluster)
905 : {
906 : int dbnum;
907 0 : FILE *script = NULL;
908 0 : bool found = false;
909 : char output_path[MAXPGPATH];
910 :
911 0 : prep_status("Checking for tables WITH OIDS");
912 :
913 0 : snprintf(output_path, sizeof(output_path),
914 : "tables_with_oids.txt");
915 :
916 : /* Find any tables declared WITH OIDS */
917 0 : for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
918 : {
919 : PGresult *res;
920 0 : bool db_used = false;
921 : int ntups;
922 : int rowno;
923 : int i_nspname,
924 : i_relname;
925 0 : DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
926 0 : PGconn *conn = connectToServer(cluster, active_db->db_name);
927 :
928 0 : res = executeQueryOrDie(conn,
929 : "SELECT n.nspname, c.relname "
930 : "FROM pg_catalog.pg_class c, "
931 : " pg_catalog.pg_namespace n "
932 : "WHERE c.relnamespace = n.oid AND "
933 : " c.relhasoids AND"
934 : " n.nspname NOT IN ('pg_catalog')");
935 :
936 0 : ntups = PQntuples(res);
937 0 : i_nspname = PQfnumber(res, "nspname");
938 0 : i_relname = PQfnumber(res, "relname");
939 0 : for (rowno = 0; rowno < ntups; rowno++)
940 : {
941 0 : found = true;
942 0 : if (script == NULL && (script = fopen_priv(output_path, "w")) == NULL)
943 0 : pg_fatal("could not open file \"%s\": %s\n",
944 0 : output_path, strerror(errno));
945 0 : if (!db_used)
946 : {
947 0 : fprintf(script, "In database: %s\n", active_db->db_name);
948 0 : db_used = true;
949 : }
950 0 : fprintf(script, " %s.%s\n",
951 : PQgetvalue(res, rowno, i_nspname),
952 : PQgetvalue(res, rowno, i_relname));
953 : }
954 :
955 0 : PQclear(res);
956 :
957 0 : PQfinish(conn);
958 : }
959 :
960 0 : if (script)
961 0 : fclose(script);
962 :
963 0 : if (found)
964 : {
965 0 : pg_log(PG_REPORT, "fatal\n");
966 0 : pg_fatal("Your installation contains tables declared WITH OIDS, which is not\n"
967 : "supported anymore. Consider removing the oid column using\n"
968 : " ALTER TABLE ... SET WITHOUT OIDS;\n"
969 : "A list of tables with the problem is in the file:\n"
970 : " %s\n\n", output_path);
971 : }
972 : else
973 0 : check_ok();
974 0 : }
975 :
976 :
977 : /*
978 : * check_for_reg_data_type_usage()
979 : * pg_upgrade only preserves these system values:
980 : * pg_class.oid
981 : * pg_type.oid
982 : * pg_enum.oid
983 : *
984 : * Many of the reg* data types reference system catalog info that is
985 : * not preserved, and hence these data types cannot be used in user
986 : * tables upgraded by pg_upgrade.
987 : */
988 : static void
989 2 : check_for_reg_data_type_usage(ClusterInfo *cluster)
990 : {
991 : int dbnum;
992 2 : FILE *script = NULL;
993 2 : bool found = false;
994 : char output_path[MAXPGPATH];
995 :
996 2 : prep_status("Checking for reg* data types in user tables");
997 :
998 2 : snprintf(output_path, sizeof(output_path), "tables_using_reg.txt");
999 :
1000 14 : for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
1001 : {
1002 : PGresult *res;
1003 12 : bool db_used = false;
1004 : int ntups;
1005 : int rowno;
1006 : int i_nspname,
1007 : i_relname,
1008 : i_attname;
1009 12 : DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
1010 12 : PGconn *conn = connectToServer(cluster, active_db->db_name);
1011 :
1012 : /*
1013 : * While several relkinds don't store any data, e.g. views, they can
1014 : * be used to define data types of other columns, so we check all
1015 : * relkinds.
1016 : */
1017 12 : res = executeQueryOrDie(conn,
1018 : "SELECT n.nspname, c.relname, a.attname "
1019 : "FROM pg_catalog.pg_class c, "
1020 : " pg_catalog.pg_namespace n, "
1021 : " pg_catalog.pg_attribute a, "
1022 : " pg_catalog.pg_type t "
1023 : "WHERE c.oid = a.attrelid AND "
1024 : " NOT a.attisdropped AND "
1025 : " a.atttypid = t.oid AND "
1026 : " t.typnamespace = "
1027 : " (SELECT oid FROM pg_namespace "
1028 : " WHERE nspname = 'pg_catalog') AND"
1029 : " t.typname IN ( "
1030 : /* regclass.oid is preserved, so 'regclass' is OK */
1031 : " 'regcollation', "
1032 : " 'regconfig', "
1033 : " 'regdictionary', "
1034 : " 'regnamespace', "
1035 : " 'regoper', "
1036 : " 'regoperator', "
1037 : " 'regproc', "
1038 : " 'regprocedure' "
1039 : /* regrole.oid is preserved, so 'regrole' is OK */
1040 : /* regtype.oid is preserved, so 'regtype' is OK */
1041 : " ) AND "
1042 : " c.relnamespace = n.oid AND "
1043 : " n.nspname NOT IN ('pg_catalog', 'information_schema')");
1044 :
1045 12 : ntups = PQntuples(res);
1046 12 : i_nspname = PQfnumber(res, "nspname");
1047 12 : i_relname = PQfnumber(res, "relname");
1048 12 : i_attname = PQfnumber(res, "attname");
1049 12 : for (rowno = 0; rowno < ntups; rowno++)
1050 : {
1051 0 : found = true;
1052 0 : if (script == NULL && (script = fopen_priv(output_path, "w")) == NULL)
1053 0 : pg_fatal("could not open file \"%s\": %s\n",
1054 0 : output_path, strerror(errno));
1055 0 : if (!db_used)
1056 : {
1057 0 : fprintf(script, "In database: %s\n", active_db->db_name);
1058 0 : db_used = true;
1059 : }
1060 0 : fprintf(script, " %s.%s.%s\n",
1061 : PQgetvalue(res, rowno, i_nspname),
1062 : PQgetvalue(res, rowno, i_relname),
1063 : PQgetvalue(res, rowno, i_attname));
1064 : }
1065 :
1066 12 : PQclear(res);
1067 :
1068 12 : PQfinish(conn);
1069 : }
1070 :
1071 2 : if (script)
1072 0 : fclose(script);
1073 :
1074 2 : if (found)
1075 : {
1076 0 : pg_log(PG_REPORT, "fatal\n");
1077 0 : pg_fatal("Your installation contains one of the reg* data types in user tables.\n"
1078 : "These data types reference system OIDs that are not preserved by\n"
1079 : "pg_upgrade, so this cluster cannot currently be upgraded. You can\n"
1080 : "remove the problem tables and restart the upgrade. A list of the\n"
1081 : "problem columns is in the file:\n"
1082 : " %s\n\n", output_path);
1083 : }
1084 : else
1085 2 : check_ok();
1086 2 : }
1087 :
1088 :
1089 : /*
1090 : * check_for_jsonb_9_4_usage()
1091 : *
1092 : * JSONB changed its storage format during 9.4 beta, so check for it.
1093 : */
1094 : static void
1095 0 : check_for_jsonb_9_4_usage(ClusterInfo *cluster)
1096 : {
1097 : int dbnum;
1098 0 : FILE *script = NULL;
1099 0 : bool found = false;
1100 : char output_path[MAXPGPATH];
1101 :
1102 0 : prep_status("Checking for incompatible \"jsonb\" data type");
1103 :
1104 0 : snprintf(output_path, sizeof(output_path), "tables_using_jsonb.txt");
1105 :
1106 0 : for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
1107 : {
1108 : PGresult *res;
1109 0 : bool db_used = false;
1110 : int ntups;
1111 : int rowno;
1112 : int i_nspname,
1113 : i_relname,
1114 : i_attname;
1115 0 : DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
1116 0 : PGconn *conn = connectToServer(cluster, active_db->db_name);
1117 :
1118 : /*
1119 : * While several relkinds don't store any data, e.g. views, they can
1120 : * be used to define data types of other columns, so we check all
1121 : * relkinds.
1122 : */
1123 0 : res = executeQueryOrDie(conn,
1124 : "SELECT n.nspname, c.relname, a.attname "
1125 : "FROM pg_catalog.pg_class c, "
1126 : " pg_catalog.pg_namespace n, "
1127 : " pg_catalog.pg_attribute a "
1128 : "WHERE c.oid = a.attrelid AND "
1129 : " NOT a.attisdropped AND "
1130 : " a.atttypid = 'pg_catalog.jsonb'::pg_catalog.regtype AND "
1131 : " c.relnamespace = n.oid AND "
1132 : /* exclude possible orphaned temp tables */
1133 : " n.nspname !~ '^pg_temp_' AND "
1134 : " n.nspname NOT IN ('pg_catalog', 'information_schema')");
1135 :
1136 0 : ntups = PQntuples(res);
1137 0 : i_nspname = PQfnumber(res, "nspname");
1138 0 : i_relname = PQfnumber(res, "relname");
1139 0 : i_attname = PQfnumber(res, "attname");
1140 0 : for (rowno = 0; rowno < ntups; rowno++)
1141 : {
1142 0 : found = true;
1143 0 : if (script == NULL && (script = fopen_priv(output_path, "w")) == NULL)
1144 0 : pg_fatal("could not open file \"%s\": %s\n",
1145 0 : output_path, strerror(errno));
1146 0 : if (!db_used)
1147 : {
1148 0 : fprintf(script, "In database: %s\n", active_db->db_name);
1149 0 : db_used = true;
1150 : }
1151 0 : fprintf(script, " %s.%s.%s\n",
1152 : PQgetvalue(res, rowno, i_nspname),
1153 : PQgetvalue(res, rowno, i_relname),
1154 : PQgetvalue(res, rowno, i_attname));
1155 : }
1156 :
1157 0 : PQclear(res);
1158 :
1159 0 : PQfinish(conn);
1160 : }
1161 :
1162 0 : if (script)
1163 0 : fclose(script);
1164 :
1165 0 : if (found)
1166 : {
1167 0 : pg_log(PG_REPORT, "fatal\n");
1168 0 : pg_fatal("Your installation contains the \"jsonb\" data type in user tables.\n"
1169 : "The internal format of \"jsonb\" changed during 9.4 beta so this\n"
1170 : "cluster cannot currently be upgraded. You can remove the problem\n"
1171 : "tables and restart the upgrade. A list of the problem columns is\n"
1172 : "in the file:\n"
1173 : " %s\n\n", output_path);
1174 : }
1175 : else
1176 0 : check_ok();
1177 0 : }
1178 :
1179 : /*
1180 : * check_for_pg_role_prefix()
1181 : *
1182 : * Versions older than 9.6 should not have any pg_* roles
1183 : */
1184 : static void
1185 0 : check_for_pg_role_prefix(ClusterInfo *cluster)
1186 : {
1187 : PGresult *res;
1188 0 : PGconn *conn = connectToServer(cluster, "template1");
1189 :
1190 0 : prep_status("Checking for roles starting with \"pg_\"");
1191 :
1192 0 : res = executeQueryOrDie(conn,
1193 : "SELECT * "
1194 : "FROM pg_catalog.pg_roles "
1195 : "WHERE rolname ~ '^pg_'");
1196 :
1197 0 : if (PQntuples(res) != 0)
1198 : {
1199 0 : if (cluster == &old_cluster)
1200 0 : pg_fatal("The source cluster contains roles starting with \"pg_\"\n");
1201 : else
1202 0 : pg_fatal("The target cluster contains roles starting with \"pg_\"\n");
1203 : }
1204 :
1205 0 : PQclear(res);
1206 :
1207 0 : PQfinish(conn);
1208 :
1209 0 : check_ok();
1210 0 : }
1211 :
1212 :
1213 : /*
1214 : * get_canonical_locale_name
1215 : *
1216 : * Send the locale name to the system, and hope we get back a canonical
1217 : * version. This should match the backend's check_locale() function.
1218 : */
1219 : static char *
1220 0 : get_canonical_locale_name(int category, const char *locale)
1221 : {
1222 : char *save;
1223 : char *res;
1224 :
1225 : /* get the current setting, so we can restore it. */
1226 0 : save = setlocale(category, NULL);
1227 0 : if (!save)
1228 0 : pg_fatal("failed to get the current locale\n");
1229 :
1230 : /* 'save' may be pointing at a modifiable scratch variable, so copy it. */
1231 0 : save = pg_strdup(save);
1232 :
1233 : /* set the locale with setlocale, to see if it accepts it. */
1234 0 : res = setlocale(category, locale);
1235 :
1236 0 : if (!res)
1237 0 : pg_fatal("failed to get system locale name for \"%s\"\n", locale);
1238 :
1239 0 : res = pg_strdup(res);
1240 :
1241 : /* restore old value. */
1242 0 : if (!setlocale(category, save))
1243 0 : pg_fatal("failed to restore old locale \"%s\"\n", save);
1244 :
1245 0 : pg_free(save);
1246 :
1247 0 : return res;
1248 : }
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