1 /*-------------------------------------------------------------------------
5 * Private implementation of the archiver routines.
7 * See the headers to pg_restore for more details.
9 * Copyright (c) 2000, Philip Warner
10 * Rights are granted to use this software in any way so long
11 * as this notice is not removed.
13 * The author is not responsible for loss or damages that may
14 * result from its use.
18 * $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.c,v 1.168 2009/03/20 09:21:08 petere Exp $
20 *-------------------------------------------------------------------------
23 #include "pg_backup_db.h"
24 #include "dumputils.h"
28 #include <sys/types.h>
35 #include "libpq/libpq-fs.h"
38 * Special exit values from worker children. We reserve 0 for normal
39 * success; 1 and other small values should be interpreted as crashes.
41 #define WORKER_CREATE_DONE 10
42 #define WORKER_INHIBIT_DATA 11
43 #define WORKER_IGNORED_ERRORS 12
46 * Unix uses exit to return result from worker child, so function is void.
47 * Windows thread result comes via function return.
50 #define parallel_restore_result void
52 #define parallel_restore_result DWORD
55 /* IDs for worker children are either PIDs or thread handles */
59 #define thandle HANDLE
62 typedef struct _restore_args
68 typedef struct _parallel_slot
78 static const char *modulename = gettext_noop("archiver");
81 static ArchiveHandle *_allocAH(const char *FileSpec, const ArchiveFormat fmt,
82 const int compression, ArchiveMode mode);
83 static void _getObjectDescription(PQExpBuffer buf, TocEntry *te,
85 static void _printTocEntry(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt, bool isData, bool acl_pass);
88 static void _doSetFixedOutputState(ArchiveHandle *AH);
89 static void _doSetSessionAuth(ArchiveHandle *AH, const char *user);
90 static void _doSetWithOids(ArchiveHandle *AH, const bool withOids);
91 static void _reconnectToDB(ArchiveHandle *AH, const char *dbname);
92 static void _becomeUser(ArchiveHandle *AH, const char *user);
93 static void _becomeOwner(ArchiveHandle *AH, TocEntry *te);
94 static void _selectOutputSchema(ArchiveHandle *AH, const char *schemaName);
95 static void _selectTablespace(ArchiveHandle *AH, const char *tablespace);
96 static void processEncodingEntry(ArchiveHandle *AH, TocEntry *te);
97 static void processStdStringsEntry(ArchiveHandle *AH, TocEntry *te);
98 static teReqs _tocEntryRequired(TocEntry *te, RestoreOptions *ropt, bool include_acls);
99 static void _disableTriggersIfNecessary(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt);
100 static void _enableTriggersIfNecessary(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt);
101 static TocEntry *getTocEntryByDumpId(ArchiveHandle *AH, DumpId id);
102 static void _moveAfter(ArchiveHandle *AH, TocEntry *pos, TocEntry *te);
103 static int _discoverArchiveFormat(ArchiveHandle *AH);
105 static void dump_lo_buf(ArchiveHandle *AH);
106 static void _write_msg(const char *modulename, const char *fmt, va_list ap);
107 static void _die_horribly(ArchiveHandle *AH, const char *modulename, const char *fmt, va_list ap);
109 static void dumpTimestamp(ArchiveHandle *AH, const char *msg, time_t tim);
110 static OutputContext SetOutput(ArchiveHandle *AH, char *filename, int compression);
111 static void ResetOutput(ArchiveHandle *AH, OutputContext savedContext);
113 static int restore_toc_entry(ArchiveHandle *AH, TocEntry *te,
114 RestoreOptions *ropt, bool is_parallel);
115 static void restore_toc_entries_parallel(ArchiveHandle *AH);
116 static thandle spawn_restore(RestoreArgs *args);
117 static thandle reap_child(ParallelSlot *slots, int n_slots, int *work_status);
118 static bool work_in_progress(ParallelSlot *slots, int n_slots);
119 static int get_next_slot(ParallelSlot *slots, int n_slots);
120 static TocEntry *get_next_work_item(ArchiveHandle *AH,
121 TocEntry **first_unprocessed,
122 ParallelSlot *slots, int n_slots);
123 static parallel_restore_result parallel_restore(RestoreArgs *args);
124 static void mark_work_done(ArchiveHandle *AH, thandle worker, int status,
125 ParallelSlot *slots, int n_slots);
126 static void fix_dependencies(ArchiveHandle *AH);
127 static void repoint_table_dependencies(ArchiveHandle *AH,
128 DumpId tableId, DumpId tableDataId);
129 static void identify_locking_dependencies(TocEntry *te,
130 TocEntry **tocsByDumpId);
131 static void reduce_dependencies(ArchiveHandle *AH, TocEntry *te);
132 static void mark_create_done(ArchiveHandle *AH, TocEntry *te);
133 static void inhibit_data_for_failed_table(ArchiveHandle *AH, TocEntry *te);
134 static ArchiveHandle *CloneArchive(ArchiveHandle *AH);
135 static void DeCloneArchive(ArchiveHandle *AH);
141 * The objective it to make writing new formats and dumpers as simple
142 * as possible, if necessary at the expense of extra function calls etc.
147 /* Create a new archive */
150 CreateArchive(const char *FileSpec, const ArchiveFormat fmt,
151 const int compression, ArchiveMode mode)
154 ArchiveHandle *AH = _allocAH(FileSpec, fmt, compression, mode);
156 return (Archive *) AH;
159 /* Open an existing archive */
162 OpenArchive(const char *FileSpec, const ArchiveFormat fmt)
164 ArchiveHandle *AH = _allocAH(FileSpec, fmt, 0, archModeRead);
166 return (Archive *) AH;
171 CloseArchive(Archive *AHX)
174 ArchiveHandle *AH = (ArchiveHandle *) AHX;
176 (*AH->ClosePtr) (AH);
178 /* Close the output */
180 res = GZCLOSE(AH->OF);
181 else if (AH->OF != stdout)
182 res = fclose(AH->OF);
185 die_horribly(AH, modulename, "could not close output file: %s\n",
191 RestoreArchive(Archive *AHX, RestoreOptions *ropt)
193 ArchiveHandle *AH = (ArchiveHandle *) AHX;
199 AH->stage = STAGE_INITIALIZING;
202 * Check for nonsensical option combinations.
204 * NB: create+dropSchema is useless because if you're creating the DB,
205 * there's no need to drop individual items in it. Moreover, if we tried
206 * to do that then we'd issue the drops in the database initially
207 * connected to, not the one we will create, which is very bad...
209 if (ropt->create && ropt->dropSchema)
210 die_horribly(AH, modulename, "-C and -c are incompatible options\n");
213 * -1 is not compatible with -C, because we can't create a database
214 * inside a transaction block.
216 if (ropt->create && ropt->single_txn)
217 die_horribly(AH, modulename, "-C and -1 are incompatible options\n");
220 * Make sure we won't need (de)compression we haven't got
223 if (AH->compression != 0 && AH->PrintTocDataPtr != NULL)
225 for (te = AH->toc->next; te != AH->toc; te = te->next)
227 reqs = _tocEntryRequired(te, ropt, false);
228 if (te->hadDumper && (reqs & REQ_DATA) != 0)
229 die_horribly(AH, modulename, "cannot restore from compressed archive (compression not supported in this installation)\n");
235 * If we're using a DB connection, then connect it.
239 ahlog(AH, 1, "connecting to database for restore\n");
240 if (AH->version < K_VERS_1_3)
241 die_horribly(AH, modulename, "direct database connections are not supported in pre-1.3 archives\n");
243 /* XXX Should get this from the archive */
244 AHX->minRemoteVersion = 070100;
245 AHX->maxRemoteVersion = 999999;
247 ConnectDatabase(AHX, ropt->dbname,
248 ropt->pghost, ropt->pgport, ropt->username,
249 ropt->promptPassword);
252 * If we're talking to the DB directly, don't send comments since they
253 * obscure SQL when displaying errors
255 AH->noTocComments = 1;
259 * Work out if we have an implied data-only restore. This can happen if
260 * the dump was data only or if the user has used a toc list to exclude
261 * all of the schema data. All we do is look for schema entries - if none
262 * are found then we set the dataOnly flag.
264 * We could scan for wanted TABLE entries, but that is not the same as
265 * dataOnly. At this stage, it seems unnecessary (6-Mar-2001).
269 int impliedDataOnly = 1;
271 for (te = AH->toc->next; te != AH->toc; te = te->next)
273 reqs = _tocEntryRequired(te, ropt, true);
274 if ((reqs & REQ_SCHEMA) != 0)
275 { /* It's schema, and it's wanted */
282 ropt->dataOnly = impliedDataOnly;
283 ahlog(AH, 1, "implied data-only restore\n");
288 * Setup the output file if necessary.
290 if (ropt->filename || ropt->compression)
291 sav = SetOutput(AH, ropt->filename, ropt->compression);
293 ahprintf(AH, "--\n-- PostgreSQL database dump\n--\n\n");
295 if (AH->public.verbose)
296 dumpTimestamp(AH, "Started on", AH->createDate);
298 if (ropt->single_txn)
301 StartTransaction(AH);
303 ahprintf(AH, "BEGIN;\n\n");
307 * Establish important parameter values right away.
309 _doSetFixedOutputState(AH);
311 AH->stage = STAGE_PROCESSING;
314 * Drop the items at the start, in reverse order
316 if (ropt->dropSchema)
318 for (te = AH->toc->prev; te != AH->toc; te = te->prev)
322 reqs = _tocEntryRequired(te, ropt, false /* needn't drop ACLs */ );
323 if (((reqs & REQ_SCHEMA) != 0) && te->dropStmt)
325 /* We want the schema */
326 ahlog(AH, 1, "dropping %s %s\n", te->desc, te->tag);
327 /* Select owner and schema as necessary */
328 _becomeOwner(AH, te);
329 _selectOutputSchema(AH, te->namespace);
331 ahprintf(AH, "%s", te->dropStmt);
336 * _selectOutputSchema may have set currSchema to reflect the effect
337 * of a "SET search_path" command it emitted. However, by now we may
338 * have dropped that schema; or it might not have existed in the first
339 * place. In either case the effective value of search_path will not
340 * be what we think. Forcibly reset currSchema so that we will
341 * re-establish the search_path setting when needed (after creating
344 * If we treated users as pg_dump'able objects then we'd need to reset
348 free(AH->currSchema);
349 AH->currSchema = NULL;
353 * In serial mode, we now process each non-ACL TOC entry.
355 * In parallel mode, turn control over to the parallel-restore logic.
357 if (ropt->number_of_jobs > 1 && ropt->useDB)
358 restore_toc_entries_parallel(AH);
361 for (te = AH->toc->next; te != AH->toc; te = te->next)
362 (void) restore_toc_entry(AH, te, ropt, false);
366 * Scan TOC again to output ownership commands and ACLs
368 for (te = AH->toc->next; te != AH->toc; te = te->next)
372 /* Work out what, if anything, we want from this entry */
373 reqs = _tocEntryRequired(te, ropt, true);
375 if ((reqs & REQ_SCHEMA) != 0) /* We want the schema */
377 ahlog(AH, 1, "setting owner and privileges for %s %s\n",
379 _printTocEntry(AH, te, ropt, false, true);
383 if (ropt->single_txn)
386 CommitTransaction(AH);
388 ahprintf(AH, "COMMIT;\n\n");
391 if (AH->public.verbose)
392 dumpTimestamp(AH, "Completed on", time(NULL));
394 ahprintf(AH, "--\n-- PostgreSQL database dump complete\n--\n\n");
397 * Clean up & we're done.
399 AH->stage = STAGE_FINALIZING;
401 if (ropt->filename || ropt->compression)
402 ResetOutput(AH, sav);
406 PQfinish(AH->connection);
407 AH->connection = NULL;
412 * Restore a single TOC item. Used in both parallel and non-parallel restore;
413 * is_parallel is true if we are in a worker child process.
415 * Returns 0 normally, but WORKER_CREATE_DONE or WORKER_INHIBIT_DATA if
416 * the parallel parent has to make the corresponding status update.
419 restore_toc_entry(ArchiveHandle *AH, TocEntry *te,
420 RestoreOptions *ropt, bool is_parallel)
428 /* Work out what, if anything, we want from this entry */
429 reqs = _tocEntryRequired(te, ropt, false);
431 /* Dump any relevant dump warnings to stderr */
432 if (!ropt->suppressDumpWarnings && strcmp(te->desc, "WARNING") == 0)
434 if (!ropt->dataOnly && te->defn != NULL && strlen(te->defn) != 0)
435 write_msg(modulename, "warning from original dump file: %s\n", te->defn);
436 else if (te->copyStmt != NULL && strlen(te->copyStmt) != 0)
437 write_msg(modulename, "warning from original dump file: %s\n", te->copyStmt);
442 if ((reqs & REQ_SCHEMA) != 0) /* We want the schema */
444 ahlog(AH, 1, "creating %s %s\n", te->desc, te->tag);
446 _printTocEntry(AH, te, ropt, false, false);
449 if (strcmp(te->desc, "TABLE") == 0)
451 if (AH->lastErrorTE == te)
454 * We failed to create the table.
455 * If --no-data-for-failed-tables was given,
456 * mark the corresponding TABLE DATA to be ignored.
458 * In the parallel case this must be done in the parent,
459 * so we just set the return value.
461 if (ropt->noDataForFailedTables)
464 retval = WORKER_INHIBIT_DATA;
466 inhibit_data_for_failed_table(AH, te);
472 * We created the table successfully. Mark the
473 * corresponding TABLE DATA for possible truncation.
475 * In the parallel case this must be done in the parent,
476 * so we just set the return value.
479 retval = WORKER_CREATE_DONE;
481 mark_create_done(AH, te);
485 /* If we created a DB, connect to it... */
486 if (strcmp(te->desc, "DATABASE") == 0)
488 ahlog(AH, 1, "connecting to new database \"%s\"\n", te->tag);
489 _reconnectToDB(AH, te->tag);
490 ropt->dbname = strdup(te->tag);
495 * If we have a data component, then process it
497 if ((reqs & REQ_DATA) != 0)
500 * hadDumper will be set if there is genuine data component for
501 * this node. Otherwise, we need to check the defn field for
502 * statements that need to be executed in data-only restores.
507 * If we can output the data, then restore it.
509 if (AH->PrintTocDataPtr != NULL && (reqs & REQ_DATA) != 0)
511 _printTocEntry(AH, te, ropt, true, false);
513 if (strcmp(te->desc, "BLOBS") == 0 ||
514 strcmp(te->desc, "BLOB COMMENTS") == 0)
516 ahlog(AH, 1, "restoring %s\n", te->desc);
518 _selectOutputSchema(AH, "pg_catalog");
520 (*AH->PrintTocDataPtr) (AH, te, ropt);
524 _disableTriggersIfNecessary(AH, te, ropt);
526 /* Select owner and schema as necessary */
527 _becomeOwner(AH, te);
528 _selectOutputSchema(AH, te->namespace);
530 ahlog(AH, 1, "restoring data for table \"%s\"\n",
534 * In parallel restore, if we created the table earlier
535 * in the run then we wrap the COPY in a transaction and
536 * precede it with a TRUNCATE. If archiving is not on
537 * this prevents WAL-logging the COPY. This obtains a
538 * speedup similar to that from using single_txn mode
539 * in non-parallel restores.
541 if (is_parallel && te->created)
544 * Parallel restore is always talking directly to a
545 * server, so no need to see if we should issue BEGIN.
547 StartTransaction(AH);
550 * If the server version is >= 8.4, make sure we issue
551 * TRUNCATE with ONLY so that child tables are not
554 ahprintf(AH, "TRUNCATE TABLE %s%s;\n\n",
555 (PQserverVersion(AH->connection) >= 80400 ?
561 * If we have a copy statement, use it. As of V1.3,
562 * these are separate to allow easy import from
563 * withing a database connection. Pre 1.3 archives can
564 * not use DB connections and are sent to output only.
566 * For V1.3+, the table data MUST have a copy
567 * statement so that we can go into appropriate mode
570 if (te->copyStmt && strlen(te->copyStmt) > 0)
572 ahprintf(AH, "%s", te->copyStmt);
573 AH->writingCopyData = true;
576 (*AH->PrintTocDataPtr) (AH, te, ropt);
578 AH->writingCopyData = false;
580 /* close out the transaction started above */
581 if (is_parallel && te->created)
582 CommitTransaction(AH);
584 _enableTriggersIfNecessary(AH, te, ropt);
588 else if (!defnDumped)
590 /* If we haven't already dumped the defn part, do so now */
591 ahlog(AH, 1, "executing %s %s\n", te->desc, te->tag);
592 _printTocEntry(AH, te, ropt, false, false);
600 * Allocate a new RestoreOptions block.
601 * This is mainly so we can initialize it, but also for future expansion,
604 NewRestoreOptions(void)
606 RestoreOptions *opts;
608 opts = (RestoreOptions *) calloc(1, sizeof(RestoreOptions));
610 /* set any fields that shouldn't default to zeroes */
611 opts->format = archUnknown;
612 opts->promptPassword = TRI_DEFAULT;
618 _disableTriggersIfNecessary(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt)
620 /* This hack is only needed in a data-only restore */
621 if (!ropt->dataOnly || !ropt->disable_triggers)
624 ahlog(AH, 1, "disabling triggers for %s\n", te->tag);
627 * Become superuser if possible, since they are the only ones who can
628 * disable constraint triggers. If -S was not given, assume the initial
629 * user identity is a superuser. (XXX would it be better to become the
632 _becomeUser(AH, ropt->superuser);
637 _selectOutputSchema(AH, te->namespace);
639 ahprintf(AH, "ALTER TABLE %s DISABLE TRIGGER ALL;\n\n",
644 _enableTriggersIfNecessary(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt)
646 /* This hack is only needed in a data-only restore */
647 if (!ropt->dataOnly || !ropt->disable_triggers)
650 ahlog(AH, 1, "enabling triggers for %s\n", te->tag);
653 * Become superuser if possible, since they are the only ones who can
654 * disable constraint triggers. If -S was not given, assume the initial
655 * user identity is a superuser. (XXX would it be better to become the
658 _becomeUser(AH, ropt->superuser);
663 _selectOutputSchema(AH, te->namespace);
665 ahprintf(AH, "ALTER TABLE %s ENABLE TRIGGER ALL;\n\n",
670 * This is a routine that is part of the dumper interface, hence the 'Archive*' parameter.
675 WriteData(Archive *AHX, const void *data, size_t dLen)
677 ArchiveHandle *AH = (ArchiveHandle *) AHX;
680 die_horribly(AH, modulename, "internal error -- WriteData cannot be called outside the context of a DataDumper routine\n");
682 return (*AH->WriteDataPtr) (AH, data, dLen);
686 * Create a new TOC entry. The TOC was designed as a TOC, but is now the
687 * repository for all metadata. But the name has stuck.
692 ArchiveEntry(Archive *AHX,
693 CatalogId catalogId, DumpId dumpId,
695 const char *namespace,
696 const char *tablespace,
697 const char *owner, bool withOids,
698 const char *desc, teSection section,
700 const char *dropStmt, const char *copyStmt,
701 const DumpId *deps, int nDeps,
702 DataDumperPtr dumpFn, void *dumpArg)
704 ArchiveHandle *AH = (ArchiveHandle *) AHX;
707 newToc = (TocEntry *) calloc(1, sizeof(TocEntry));
709 die_horribly(AH, modulename, "out of memory\n");
712 if (dumpId > AH->maxDumpId)
713 AH->maxDumpId = dumpId;
715 newToc->prev = AH->toc->prev;
716 newToc->next = AH->toc;
717 AH->toc->prev->next = newToc;
718 AH->toc->prev = newToc;
720 newToc->catalogId = catalogId;
721 newToc->dumpId = dumpId;
722 newToc->section = section;
724 newToc->tag = strdup(tag);
725 newToc->namespace = namespace ? strdup(namespace) : NULL;
726 newToc->tablespace = tablespace ? strdup(tablespace) : NULL;
727 newToc->owner = strdup(owner);
728 newToc->withOids = withOids;
729 newToc->desc = strdup(desc);
730 newToc->defn = strdup(defn);
731 newToc->dropStmt = strdup(dropStmt);
732 newToc->copyStmt = copyStmt ? strdup(copyStmt) : NULL;
736 newToc->dependencies = (DumpId *) malloc(nDeps * sizeof(DumpId));
737 memcpy(newToc->dependencies, deps, nDeps * sizeof(DumpId));
738 newToc->nDeps = nDeps;
742 newToc->dependencies = NULL;
746 newToc->dataDumper = dumpFn;
747 newToc->dataDumperArg = dumpArg;
748 newToc->hadDumper = dumpFn ? true : false;
750 newToc->formatData = NULL;
752 if (AH->ArchiveEntryPtr !=NULL)
753 (*AH->ArchiveEntryPtr) (AH, newToc);
758 PrintTOCSummary(Archive *AHX, RestoreOptions *ropt)
760 ArchiveHandle *AH = (ArchiveHandle *) AHX;
766 sav = SetOutput(AH, ropt->filename, 0 /* no compression */ );
768 ahprintf(AH, ";\n; Archive created at %s", ctime(&AH->createDate));
769 ahprintf(AH, "; dbname: %s\n; TOC Entries: %d\n; Compression: %d\n",
770 AH->archdbname, AH->tocCount, AH->compression);
787 ahprintf(AH, "; Dump Version: %d.%d-%d\n", AH->vmaj, AH->vmin, AH->vrev);
788 ahprintf(AH, "; Format: %s\n", fmtName);
789 ahprintf(AH, "; Integer: %d bytes\n", (int) AH->intSize);
790 ahprintf(AH, "; Offset: %d bytes\n", (int) AH->offSize);
791 if (AH->archiveRemoteVersion)
792 ahprintf(AH, "; Dumped from database version: %s\n",
793 AH->archiveRemoteVersion);
794 if (AH->archiveDumpVersion)
795 ahprintf(AH, "; Dumped by pg_dump version: %s\n",
796 AH->archiveDumpVersion);
798 ahprintf(AH, ";\n;\n; Selected TOC Entries:\n;\n");
800 for (te = AH->toc->next; te != AH->toc; te = te->next)
802 if (ropt->verbose || _tocEntryRequired(te, ropt, true) != 0)
803 ahprintf(AH, "%d; %u %u %s %s %s %s\n", te->dumpId,
804 te->catalogId.tableoid, te->catalogId.oid,
805 te->desc, te->namespace ? te->namespace : "-",
807 if (ropt->verbose && te->nDeps > 0)
811 ahprintf(AH, ";\tdepends on:");
812 for (i = 0; i < te->nDeps; i++)
813 ahprintf(AH, " %d", te->dependencies[i]);
819 ResetOutput(AH, sav);
826 /* Called by a dumper to signal start of a BLOB */
828 StartBlob(Archive *AHX, Oid oid)
830 ArchiveHandle *AH = (ArchiveHandle *) AHX;
832 if (!AH->StartBlobPtr)
833 die_horribly(AH, modulename, "large-object output not supported in chosen format\n");
835 (*AH->StartBlobPtr) (AH, AH->currToc, oid);
840 /* Called by a dumper to signal end of a BLOB */
842 EndBlob(Archive *AHX, Oid oid)
844 ArchiveHandle *AH = (ArchiveHandle *) AHX;
847 (*AH->EndBlobPtr) (AH, AH->currToc, oid);
857 * Called by a format handler before any blobs are restored
860 StartRestoreBlobs(ArchiveHandle *AH)
862 if (!AH->ropt->single_txn)
865 StartTransaction(AH);
867 ahprintf(AH, "BEGIN;\n\n");
874 * Called by a format handler after all blobs are restored
877 EndRestoreBlobs(ArchiveHandle *AH)
879 if (!AH->ropt->single_txn)
882 CommitTransaction(AH);
884 ahprintf(AH, "COMMIT;\n\n");
887 ahlog(AH, 1, "restored %d large objects\n", AH->blobCount);
892 * Called by a format handler to initiate restoration of a blob
895 StartRestoreBlob(ArchiveHandle *AH, Oid oid)
901 /* Initialize the LO Buffer */
904 ahlog(AH, 2, "restoring large object with OID %u\n", oid);
908 loOid = lo_create(AH->connection, oid);
909 if (loOid == 0 || loOid != oid)
910 die_horribly(AH, modulename, "could not create large object %u\n",
913 AH->loFd = lo_open(AH->connection, oid, INV_WRITE);
915 die_horribly(AH, modulename, "could not open large object\n");
919 ahprintf(AH, "SELECT lo_open(lo_create(%u), %d);\n", oid, INV_WRITE);
926 EndRestoreBlob(ArchiveHandle *AH, Oid oid)
928 if (AH->lo_buf_used > 0)
930 /* Write remaining bytes from the LO buffer */
938 lo_close(AH->connection, AH->loFd);
943 ahprintf(AH, "SELECT lo_close(0);\n\n");
948 * Sorting and Reordering
952 SortTocFromFile(Archive *AHX, RestoreOptions *ropt)
954 ArchiveHandle *AH = (ArchiveHandle *) AHX;
963 /* Allocate space for the 'wanted' array, and init it */
964 ropt->idWanted = (bool *) malloc(sizeof(bool) * AH->maxDumpId);
965 memset(ropt->idWanted, 0, sizeof(bool) * AH->maxDumpId);
967 /* Set prev entry as head of list */
971 fh = fopen(ropt->tocFile, PG_BINARY_R);
973 die_horribly(AH, modulename, "could not open TOC file \"%s\": %s\n",
974 ropt->tocFile, strerror(errno));
976 while (fgets(buf, sizeof(buf), fh) != NULL)
978 /* Truncate line at comment, if any */
979 cmnt = strchr(buf, ';');
983 /* Ignore if all blank */
984 if (strspn(buf, " \t\r") == strlen(buf))
987 /* Get an ID, check it's valid and not already seen */
988 id = strtol(buf, &endptr, 10);
989 if (endptr == buf || id <= 0 || id > AH->maxDumpId ||
990 ropt->idWanted[id - 1])
992 write_msg(modulename, "WARNING: line ignored: %s\n", buf);
997 te = getTocEntryByDumpId(AH, id);
999 die_horribly(AH, modulename, "could not find entry for ID %d\n",
1002 ropt->idWanted[id - 1] = true;
1004 _moveAfter(AH, tePrev, te);
1008 if (fclose(fh) != 0)
1009 die_horribly(AH, modulename, "could not close TOC file: %s\n",
1014 * Set up a dummy ID filter that selects all dump IDs
1017 InitDummyWantedList(Archive *AHX, RestoreOptions *ropt)
1019 ArchiveHandle *AH = (ArchiveHandle *) AHX;
1021 /* Allocate space for the 'wanted' array, and init it to 1's */
1022 ropt->idWanted = (bool *) malloc(sizeof(bool) * AH->maxDumpId);
1023 memset(ropt->idWanted, 1, sizeof(bool) * AH->maxDumpId);
1026 /**********************
1027 * 'Convenience functions that look like standard IO functions
1028 * for writing data when in dump mode.
1029 **********************/
1033 archputs(const char *s, Archive *AH)
1035 return WriteData(AH, s, strlen(s));
1040 archprintf(Archive *AH, const char *fmt,...)
1044 int bSize = strlen(fmt) + 256;
1048 * This is paranoid: deal with the possibility that vsnprintf is willing
1049 * to ignore trailing null or returns > 0 even if string does not fit. It
1050 * may be the case that it returns cnt = bufsize
1052 while (cnt < 0 || cnt >= (bSize - 1))
1057 p = (char *) malloc(bSize);
1059 exit_horribly(AH, modulename, "out of memory\n");
1061 cnt = vsnprintf(p, bSize, fmt, ap);
1064 WriteData(AH, p, cnt);
1070 /*******************************
1071 * Stuff below here should be 'private' to the archiver routines
1072 *******************************/
1074 static OutputContext
1075 SetOutput(ArchiveHandle *AH, char *filename, int compression)
1080 /* Replace the AH output file handle */
1082 sav.gzOut = AH->gzOut;
1087 fn = fileno(AH->FH);
1091 filename = AH->fSpec;
1094 fn = fileno(stdout);
1096 /* If compression explicitly requested, use gzopen */
1098 if (compression != 0)
1102 /* Don't use PG_BINARY_x since this is zlib */
1103 sprintf(fmode, "wb%d", compression);
1105 AH->OF = gzdopen(dup(fn), fmode);
1107 AH->OF = gzopen(filename, fmode);
1113 if (AH->mode == archModeAppend)
1116 AH->OF = fdopen(dup(fn), PG_BINARY_A);
1118 AH->OF = fopen(filename, PG_BINARY_A);
1123 AH->OF = fdopen(dup(fn), PG_BINARY_W);
1125 AH->OF = fopen(filename, PG_BINARY_W);
1133 die_horribly(AH, modulename, "could not open output file \"%s\": %s\n",
1134 filename, strerror(errno));
1136 die_horribly(AH, modulename, "could not open output file: %s\n",
1144 ResetOutput(ArchiveHandle *AH, OutputContext sav)
1149 res = GZCLOSE(AH->OF);
1151 res = fclose(AH->OF);
1154 die_horribly(AH, modulename, "could not close output file: %s\n",
1157 AH->gzOut = sav.gzOut;
1164 * Print formatted text to the output file (usually stdout).
1167 ahprintf(ArchiveHandle *AH, const char *fmt,...)
1171 int bSize = strlen(fmt) + 256; /* Should be enough */
1175 * This is paranoid: deal with the possibility that vsnprintf is willing
1176 * to ignore trailing null
1180 * or returns > 0 even if string does not fit. It may be the case that it
1181 * returns cnt = bufsize
1183 while (cnt < 0 || cnt >= (bSize - 1))
1188 p = (char *) malloc(bSize);
1190 die_horribly(AH, modulename, "out of memory\n");
1192 cnt = vsnprintf(p, bSize, fmt, ap);
1195 ahwrite(p, 1, cnt, AH);
1201 ahlog(ArchiveHandle *AH, int level, const char *fmt,...)
1205 if (AH->debugLevel < level && (!AH->public.verbose || level > 1))
1209 _write_msg(NULL, fmt, ap);
1214 * Single place for logic which says 'We are restoring to a direct DB connection'.
1217 RestoringToDB(ArchiveHandle *AH)
1219 return (AH->ropt && AH->ropt->useDB && AH->connection);
1223 * Dump the current contents of the LO data buffer while writing a BLOB
1226 dump_lo_buf(ArchiveHandle *AH)
1232 res = lo_write(AH->connection, AH->loFd, AH->lo_buf, AH->lo_buf_used);
1233 ahlog(AH, 5, "wrote %lu bytes of large object data (result = %lu)\n",
1234 (unsigned long) AH->lo_buf_used, (unsigned long) res);
1235 if (res != AH->lo_buf_used)
1236 die_horribly(AH, modulename,
1237 "could not write to large object (result: %lu, expected: %lu)\n",
1238 (unsigned long) res, (unsigned long) AH->lo_buf_used);
1245 str = PQescapeBytea((const unsigned char *) AH->lo_buf,
1246 AH->lo_buf_used, &len);
1248 die_horribly(AH, modulename, "out of memory\n");
1250 /* Hack: turn off writingBlob so ahwrite doesn't recurse to here */
1251 AH->writingBlob = 0;
1252 ahprintf(AH, "SELECT lowrite(0, '%s');\n", str);
1253 AH->writingBlob = 1;
1257 AH->lo_buf_used = 0;
1262 * Write buffer to the output file (usually stdout). This is user for
1263 * outputting 'restore' scripts etc. It is even possible for an archive
1264 * format to create a custom output routine to 'fake' a restore if it
1265 * wants to generate a script (see TAR output).
1268 ahwrite(const void *ptr, size_t size, size_t nmemb, ArchiveHandle *AH)
1272 if (AH->writingBlob)
1274 size_t remaining = size * nmemb;
1276 while (AH->lo_buf_used + remaining > AH->lo_buf_size)
1278 size_t avail = AH->lo_buf_size - AH->lo_buf_used;
1280 memcpy((char *) AH->lo_buf + AH->lo_buf_used, ptr, avail);
1281 ptr = (const void *) ((const char *) ptr + avail);
1283 AH->lo_buf_used += avail;
1287 memcpy((char *) AH->lo_buf + AH->lo_buf_used, ptr, remaining);
1288 AH->lo_buf_used += remaining;
1290 return size * nmemb;
1294 res = GZWRITE((void *) ptr, size, nmemb, AH->OF);
1295 if (res != (nmemb * size))
1296 die_horribly(AH, modulename, "could not write to output file: %s\n", strerror(errno));
1299 else if (AH->CustomOutPtr)
1301 res = AH->CustomOutPtr (AH, ptr, size * nmemb);
1303 if (res != (nmemb * size))
1304 die_horribly(AH, modulename, "could not write to custom output routine\n");
1310 * If we're doing a restore, and it's direct to DB, and we're
1311 * connected then send it to the DB.
1313 if (RestoringToDB(AH))
1314 return ExecuteSqlCommandBuf(AH, (void *) ptr, size * nmemb); /* Always 1, currently */
1317 res = fwrite((void *) ptr, size, nmemb, AH->OF);
1319 die_horribly(AH, modulename, "could not write to output file: %s\n",
1326 /* Common exit code */
1328 _write_msg(const char *modulename, const char *fmt, va_list ap)
1331 fprintf(stderr, "%s: [%s] ", progname, _(modulename));
1333 fprintf(stderr, "%s: ", progname);
1334 vfprintf(stderr, _(fmt), ap);
1338 write_msg(const char *modulename, const char *fmt,...)
1343 _write_msg(modulename, fmt, ap);
1349 _die_horribly(ArchiveHandle *AH, const char *modulename, const char *fmt, va_list ap)
1351 _write_msg(modulename, fmt, ap);
1355 if (AH->public.verbose)
1356 write_msg(NULL, "*** aborted because of error\n");
1358 PQfinish(AH->connection);
1366 exit_horribly(Archive *AH, const char *modulename, const char *fmt,...)
1371 _die_horribly((ArchiveHandle *) AH, modulename, fmt, ap);
1375 /* Archiver use (just different arg declaration) */
1377 die_horribly(ArchiveHandle *AH, const char *modulename, const char *fmt,...)
1382 _die_horribly(AH, modulename, fmt, ap);
1386 /* on some error, we may decide to go on... */
1388 warn_or_die_horribly(ArchiveHandle *AH,
1389 const char *modulename, const char *fmt,...)
1397 /* Do nothing special */
1400 case STAGE_INITIALIZING:
1401 if (AH->stage != AH->lastErrorStage)
1402 write_msg(modulename, "Error while INITIALIZING:\n");
1405 case STAGE_PROCESSING:
1406 if (AH->stage != AH->lastErrorStage)
1407 write_msg(modulename, "Error while PROCESSING TOC:\n");
1410 case STAGE_FINALIZING:
1411 if (AH->stage != AH->lastErrorStage)
1412 write_msg(modulename, "Error while FINALIZING:\n");
1415 if (AH->currentTE != NULL && AH->currentTE != AH->lastErrorTE)
1417 write_msg(modulename, "Error from TOC entry %d; %u %u %s %s %s\n",
1418 AH->currentTE->dumpId,
1419 AH->currentTE->catalogId.tableoid, AH->currentTE->catalogId.oid,
1420 AH->currentTE->desc, AH->currentTE->tag, AH->currentTE->owner);
1422 AH->lastErrorStage = AH->stage;
1423 AH->lastErrorTE = AH->currentTE;
1426 if (AH->public.exit_on_error)
1427 _die_horribly(AH, modulename, fmt, ap);
1430 _write_msg(modulename, fmt, ap);
1431 AH->public.n_errors++;
1437 _moveAfter(ArchiveHandle *AH, TocEntry *pos, TocEntry *te)
1439 te->prev->next = te->next;
1440 te->next->prev = te->prev;
1443 te->next = pos->next;
1445 pos->next->prev = te;
1452 _moveBefore(ArchiveHandle *AH, TocEntry *pos, TocEntry *te)
1454 te->prev->next = te->next;
1455 te->next->prev = te->prev;
1457 te->prev = pos->prev;
1459 pos->prev->next = te;
1465 getTocEntryByDumpId(ArchiveHandle *AH, DumpId id)
1469 for (te = AH->toc->next; te != AH->toc; te = te->next)
1471 if (te->dumpId == id)
1478 TocIDRequired(ArchiveHandle *AH, DumpId id, RestoreOptions *ropt)
1480 TocEntry *te = getTocEntryByDumpId(AH, id);
1485 return _tocEntryRequired(te, ropt, true);
1489 WriteOffset(ArchiveHandle *AH, pgoff_t o, int wasSet)
1494 (*AH->WriteBytePtr) (AH, wasSet);
1496 /* Write out pgoff_t smallest byte first, prevents endian mismatch */
1497 for (off = 0; off < sizeof(pgoff_t); off++)
1499 (*AH->WriteBytePtr) (AH, o & 0xFF);
1502 return sizeof(pgoff_t) + 1;
1506 ReadOffset(ArchiveHandle *AH, pgoff_t * o)
1512 /* Initialize to zero */
1515 /* Check for old version */
1516 if (AH->version < K_VERS_1_7)
1518 /* Prior versions wrote offsets using WriteInt */
1520 /* -1 means not set */
1522 return K_OFFSET_POS_NOT_SET;
1524 return K_OFFSET_NO_DATA;
1526 /* Cast to pgoff_t because it was written as an int. */
1528 return K_OFFSET_POS_SET;
1532 * Read the flag indicating the state of the data pointer. Check if valid
1535 * This used to be handled by a negative or zero pointer, now we use an
1536 * extra byte specifically for the state.
1538 offsetFlg = (*AH->ReadBytePtr) (AH) & 0xFF;
1542 case K_OFFSET_POS_NOT_SET:
1543 case K_OFFSET_NO_DATA:
1544 case K_OFFSET_POS_SET:
1549 die_horribly(AH, modulename, "unexpected data offset flag %d\n", offsetFlg);
1555 for (off = 0; off < AH->offSize; off++)
1557 if (off < sizeof(pgoff_t))
1558 *o |= ((pgoff_t) ((*AH->ReadBytePtr) (AH))) << (off * 8);
1561 if ((*AH->ReadBytePtr) (AH) != 0)
1562 die_horribly(AH, modulename, "file offset in dump file is too large\n");
1570 WriteInt(ArchiveHandle *AH, int i)
1575 * This is a bit yucky, but I don't want to make the binary format very
1576 * dependent on representation, and not knowing much about it, I write out
1577 * a sign byte. If you change this, don't forget to change the file
1578 * version #, and modify readInt to read the new format AS WELL AS the old
1585 (*AH->WriteBytePtr) (AH, 1);
1589 (*AH->WriteBytePtr) (AH, 0);
1591 for (b = 0; b < AH->intSize; b++)
1593 (*AH->WriteBytePtr) (AH, i & 0xFF);
1597 return AH->intSize + 1;
1601 ReadInt(ArchiveHandle *AH)
1606 int sign = 0; /* Default positive */
1609 if (AH->version > K_VERS_1_0)
1610 /* Read a sign byte */
1611 sign = (*AH->ReadBytePtr) (AH);
1613 for (b = 0; b < AH->intSize; b++)
1615 bv = (*AH->ReadBytePtr) (AH) & 0xFF;
1617 res = res + (bv << bitShift);
1628 WriteStr(ArchiveHandle *AH, const char *c)
1634 res = WriteInt(AH, strlen(c));
1635 res += (*AH->WriteBufPtr) (AH, c, strlen(c));
1638 res = WriteInt(AH, -1);
1644 ReadStr(ArchiveHandle *AH)
1654 buf = (char *) malloc(l + 1);
1656 die_horribly(AH, modulename, "out of memory\n");
1658 if ((*AH->ReadBufPtr) (AH, (void *) buf, l) != l)
1659 die_horribly(AH, modulename, "unexpected end of file\n");
1668 _discoverArchiveFormat(ArchiveHandle *AH)
1671 char sig[6]; /* More than enough */
1676 write_msg(modulename, "attempting to ascertain archive format\n");
1680 free(AH->lookahead);
1682 AH->lookaheadSize = 512;
1683 AH->lookahead = calloc(1, 512);
1684 AH->lookaheadLen = 0;
1685 AH->lookaheadPos = 0;
1690 fh = fopen(AH->fSpec, PG_BINARY_R);
1692 die_horribly(AH, modulename, "could not open input file \"%s\": %s\n",
1693 AH->fSpec, strerror(errno));
1699 die_horribly(AH, modulename, "could not open input file: %s\n",
1703 cnt = fread(sig, 1, 5, fh);
1708 die_horribly(AH, modulename, "could not read input file: %s\n", strerror(errno));
1710 die_horribly(AH, modulename, "input file is too short (read %lu, expected 5)\n",
1711 (unsigned long) cnt);
1714 /* Save it, just in case we need it later */
1715 strncpy(&AH->lookahead[0], sig, 5);
1716 AH->lookaheadLen = 5;
1718 if (strncmp(sig, "PGDMP", 5) == 0)
1720 AH->vmaj = fgetc(fh);
1721 AH->vmin = fgetc(fh);
1723 /* Save these too... */
1724 AH->lookahead[AH->lookaheadLen++] = AH->vmaj;
1725 AH->lookahead[AH->lookaheadLen++] = AH->vmin;
1727 /* Check header version; varies from V1.0 */
1728 if (AH->vmaj > 1 || ((AH->vmaj == 1) && (AH->vmin > 0))) /* Version > 1.0 */
1730 AH->vrev = fgetc(fh);
1731 AH->lookahead[AH->lookaheadLen++] = AH->vrev;
1736 /* Make a convenient integer <maj><min><rev>00 */
1737 AH->version = ((AH->vmaj * 256 + AH->vmin) * 256 + AH->vrev) * 256 + 0;
1739 AH->intSize = fgetc(fh);
1740 AH->lookahead[AH->lookaheadLen++] = AH->intSize;
1742 if (AH->version >= K_VERS_1_7)
1744 AH->offSize = fgetc(fh);
1745 AH->lookahead[AH->lookaheadLen++] = AH->offSize;
1748 AH->offSize = AH->intSize;
1750 AH->format = fgetc(fh);
1751 AH->lookahead[AH->lookaheadLen++] = AH->format;
1756 * *Maybe* we have a tar archive format file... So, read first 512
1759 cnt = fread(&AH->lookahead[AH->lookaheadLen], 1, 512 - AH->lookaheadLen, fh);
1760 AH->lookaheadLen += cnt;
1762 if (AH->lookaheadLen != 512)
1763 die_horribly(AH, modulename, "input file does not appear to be a valid archive (too short?)\n");
1765 if (!isValidTarHeader(AH->lookahead))
1766 die_horribly(AH, modulename, "input file does not appear to be a valid archive\n");
1768 AH->format = archTar;
1771 /* If we can't seek, then mark the header as read */
1772 if (fseeko(fh, 0, SEEK_SET) != 0)
1775 * NOTE: Formats that use the lookahead buffer can unset this in their
1781 AH->lookaheadLen = 0; /* Don't bother since we've reset the file */
1784 write_msg(modulename, "read %lu bytes into lookahead buffer\n",
1785 (unsigned long) AH->lookaheadLen);
1788 /* Close the file */
1790 if (fclose(fh) != 0)
1791 die_horribly(AH, modulename, "could not close input file: %s\n",
1799 * Allocate an archive handle
1801 static ArchiveHandle *
1802 _allocAH(const char *FileSpec, const ArchiveFormat fmt,
1803 const int compression, ArchiveMode mode)
1808 write_msg(modulename, "allocating AH for %s, format %d\n", FileSpec, fmt);
1811 AH = (ArchiveHandle *) calloc(1, sizeof(ArchiveHandle));
1813 die_horribly(AH, modulename, "out of memory\n");
1815 /* AH->debugLevel = 100; */
1817 AH->vmaj = K_VERS_MAJOR;
1818 AH->vmin = K_VERS_MINOR;
1819 AH->vrev = K_VERS_REV;
1821 /* initialize for backwards compatible string processing */
1822 AH->public.encoding = 0; /* PG_SQL_ASCII */
1823 AH->public.std_strings = false;
1825 /* sql error handling */
1826 AH->public.exit_on_error = true;
1827 AH->public.n_errors = 0;
1829 AH->createDate = time(NULL);
1831 AH->intSize = sizeof(int);
1832 AH->offSize = sizeof(pgoff_t);
1835 AH->fSpec = strdup(FileSpec);
1838 * Not used; maybe later....
1840 * AH->workDir = strdup(FileSpec); for(i=strlen(FileSpec) ; i > 0 ;
1841 * i--) if (AH->workDir[i-1] == '/')
1847 AH->currUser = NULL; /* unknown */
1848 AH->currSchema = NULL; /* ditto */
1849 AH->currTablespace = NULL; /* ditto */
1850 AH->currWithOids = -1; /* force SET */
1852 AH->toc = (TocEntry *) calloc(1, sizeof(TocEntry));
1854 die_horribly(AH, modulename, "out of memory\n");
1856 AH->toc->next = AH->toc;
1857 AH->toc->prev = AH->toc;
1860 AH->compression = compression;
1862 AH->pgCopyBuf = createPQExpBuffer();
1863 AH->sqlBuf = createPQExpBuffer();
1865 /* Open stdout with no compression for AH output handle */
1870 * On Windows, we need to use binary mode to read/write non-text archive
1871 * formats. Force stdin/stdout into binary mode if that is what we are
1875 if (fmt != archNull &&
1876 (AH->fSpec == NULL || strcmp(AH->fSpec, "") == 0))
1878 if (mode == archModeWrite)
1879 setmode(fileno(stdout), O_BINARY);
1881 setmode(fileno(stdin), O_BINARY);
1885 if (fmt == archUnknown)
1886 AH->format = _discoverArchiveFormat(AH);
1890 AH->promptPassword = TRI_DEFAULT;
1895 InitArchiveFmt_Custom(AH);
1899 InitArchiveFmt_Files(AH);
1903 InitArchiveFmt_Null(AH);
1907 InitArchiveFmt_Tar(AH);
1911 die_horribly(AH, modulename, "unrecognized file format \"%d\"\n", fmt);
1919 WriteDataChunks(ArchiveHandle *AH)
1922 StartDataPtr startPtr;
1925 for (te = AH->toc->next; te != AH->toc; te = te->next)
1927 if (te->dataDumper != NULL)
1930 /* printf("Writing data for %d (%x)\n", te->id, te); */
1932 if (strcmp(te->desc, "BLOBS") == 0)
1934 startPtr = AH->StartBlobsPtr;
1935 endPtr = AH->EndBlobsPtr;
1939 startPtr = AH->StartDataPtr;
1940 endPtr = AH->EndDataPtr;
1943 if (startPtr != NULL)
1944 (*startPtr) (AH, te);
1947 * printf("Dumper arg for %d is %x\n", te->id, te->dataDumperArg);
1951 * The user-provided DataDumper routine needs to call
1954 (*te->dataDumper) ((Archive *) AH, te->dataDumperArg);
1964 WriteToc(ArchiveHandle *AH)
1970 /* printf("%d TOC Entries to save\n", AH->tocCount); */
1972 WriteInt(AH, AH->tocCount);
1974 for (te = AH->toc->next; te != AH->toc; te = te->next)
1976 WriteInt(AH, te->dumpId);
1977 WriteInt(AH, te->dataDumper ? 1 : 0);
1979 /* OID is recorded as a string for historical reasons */
1980 sprintf(workbuf, "%u", te->catalogId.tableoid);
1981 WriteStr(AH, workbuf);
1982 sprintf(workbuf, "%u", te->catalogId.oid);
1983 WriteStr(AH, workbuf);
1985 WriteStr(AH, te->tag);
1986 WriteStr(AH, te->desc);
1987 WriteInt(AH, te->section);
1988 WriteStr(AH, te->defn);
1989 WriteStr(AH, te->dropStmt);
1990 WriteStr(AH, te->copyStmt);
1991 WriteStr(AH, te->namespace);
1992 WriteStr(AH, te->tablespace);
1993 WriteStr(AH, te->owner);
1994 WriteStr(AH, te->withOids ? "true" : "false");
1996 /* Dump list of dependencies */
1997 for (i = 0; i < te->nDeps; i++)
1999 sprintf(workbuf, "%d", te->dependencies[i]);
2000 WriteStr(AH, workbuf);
2002 WriteStr(AH, NULL); /* Terminate List */
2004 if (AH->WriteExtraTocPtr)
2005 (*AH->WriteExtraTocPtr) (AH, te);
2010 ReadToc(ArchiveHandle *AH)
2019 AH->tocCount = ReadInt(AH);
2022 for (i = 0; i < AH->tocCount; i++)
2024 te = (TocEntry *) calloc(1, sizeof(TocEntry));
2025 te->dumpId = ReadInt(AH);
2027 if (te->dumpId > AH->maxDumpId)
2028 AH->maxDumpId = te->dumpId;
2031 if (te->dumpId <= 0)
2032 die_horribly(AH, modulename,
2033 "entry ID %d out of range -- perhaps a corrupt TOC\n",
2036 te->hadDumper = ReadInt(AH);
2038 if (AH->version >= K_VERS_1_8)
2041 sscanf(tmp, "%u", &te->catalogId.tableoid);
2045 te->catalogId.tableoid = InvalidOid;
2047 sscanf(tmp, "%u", &te->catalogId.oid);
2050 te->tag = ReadStr(AH);
2051 te->desc = ReadStr(AH);
2053 if (AH->version >= K_VERS_1_11)
2055 te->section = ReadInt(AH);
2060 * rules for pre-8.4 archives wherein pg_dump hasn't classified
2061 * the entries into sections
2063 if (strcmp(te->desc, "COMMENT") == 0 ||
2064 strcmp(te->desc, "ACL") == 0)
2065 te->section = SECTION_NONE;
2066 else if (strcmp(te->desc, "TABLE DATA") == 0 ||
2067 strcmp(te->desc, "BLOBS") == 0 ||
2068 strcmp(te->desc, "BLOB COMMENTS") == 0)
2069 te->section = SECTION_DATA;
2070 else if (strcmp(te->desc, "CONSTRAINT") == 0 ||
2071 strcmp(te->desc, "CHECK CONSTRAINT") == 0 ||
2072 strcmp(te->desc, "FK CONSTRAINT") == 0 ||
2073 strcmp(te->desc, "INDEX") == 0 ||
2074 strcmp(te->desc, "RULE") == 0 ||
2075 strcmp(te->desc, "TRIGGER") == 0)
2076 te->section = SECTION_POST_DATA;
2078 te->section = SECTION_PRE_DATA;
2081 te->defn = ReadStr(AH);
2082 te->dropStmt = ReadStr(AH);
2084 if (AH->version >= K_VERS_1_3)
2085 te->copyStmt = ReadStr(AH);
2087 if (AH->version >= K_VERS_1_6)
2088 te->namespace = ReadStr(AH);
2090 if (AH->version >= K_VERS_1_10)
2091 te->tablespace = ReadStr(AH);
2093 te->owner = ReadStr(AH);
2094 if (AH->version >= K_VERS_1_9)
2096 if (strcmp(ReadStr(AH), "true") == 0)
2097 te->withOids = true;
2099 te->withOids = false;
2102 te->withOids = true;
2104 /* Read TOC entry dependencies */
2105 if (AH->version >= K_VERS_1_5)
2108 deps = (DumpId *) malloc(sizeof(DumpId) * depSize);
2114 break; /* end of list */
2115 if (depIdx >= depSize)
2118 deps = (DumpId *) realloc(deps, sizeof(DumpId) * depSize);
2120 sscanf(tmp, "%d", &deps[depIdx]);
2125 if (depIdx > 0) /* We have a non-null entry */
2127 deps = (DumpId *) realloc(deps, sizeof(DumpId) * depIdx);
2128 te->dependencies = deps;
2134 te->dependencies = NULL;
2140 te->dependencies = NULL;
2144 if (AH->ReadExtraTocPtr)
2145 (*AH->ReadExtraTocPtr) (AH, te);
2147 ahlog(AH, 3, "read TOC entry %d (ID %d) for %s %s\n",
2148 i, te->dumpId, te->desc, te->tag);
2150 /* link completed entry into TOC circular list */
2151 te->prev = AH->toc->prev;
2152 AH->toc->prev->next = te;
2156 /* special processing immediately upon read for some items */
2157 if (strcmp(te->desc, "ENCODING") == 0)
2158 processEncodingEntry(AH, te);
2159 else if (strcmp(te->desc, "STDSTRINGS") == 0)
2160 processStdStringsEntry(AH, te);
2165 processEncodingEntry(ArchiveHandle *AH, TocEntry *te)
2167 /* te->defn should have the form SET client_encoding = 'foo'; */
2168 char *defn = strdup(te->defn);
2173 ptr1 = strchr(defn, '\'');
2175 ptr2 = strchr(++ptr1, '\'');
2179 encoding = pg_char_to_encoding(ptr1);
2181 die_horribly(AH, modulename, "unrecognized encoding \"%s\"\n",
2183 AH->public.encoding = encoding;
2186 die_horribly(AH, modulename, "invalid ENCODING item: %s\n",
2193 processStdStringsEntry(ArchiveHandle *AH, TocEntry *te)
2195 /* te->defn should have the form SET standard_conforming_strings = 'x'; */
2198 ptr1 = strchr(te->defn, '\'');
2199 if (ptr1 && strncmp(ptr1, "'on'", 4) == 0)
2200 AH->public.std_strings = true;
2201 else if (ptr1 && strncmp(ptr1, "'off'", 5) == 0)
2202 AH->public.std_strings = false;
2204 die_horribly(AH, modulename, "invalid STDSTRINGS item: %s\n",
2209 _tocEntryRequired(TocEntry *te, RestoreOptions *ropt, bool include_acls)
2211 teReqs res = REQ_ALL;
2213 /* ENCODING and STDSTRINGS items are dumped specially, so always reject */
2214 if (strcmp(te->desc, "ENCODING") == 0 ||
2215 strcmp(te->desc, "STDSTRINGS") == 0)
2218 /* If it's an ACL, maybe ignore it */
2219 if ((!include_acls || ropt->aclsSkip) && strcmp(te->desc, "ACL") == 0)
2222 if (!ropt->create && strcmp(te->desc, "DATABASE") == 0)
2225 /* Check options for selective dump/restore */
2226 if (ropt->schemaNames)
2228 /* If no namespace is specified, it means all. */
2231 if (strcmp(ropt->schemaNames, te->namespace) != 0)
2237 if (strcmp(te->desc, "TABLE") == 0 ||
2238 strcmp(te->desc, "TABLE DATA") == 0)
2240 if (!ropt->selTable)
2242 if (ropt->tableNames && strcmp(ropt->tableNames, te->tag) != 0)
2245 else if (strcmp(te->desc, "INDEX") == 0)
2247 if (!ropt->selIndex)
2249 if (ropt->indexNames && strcmp(ropt->indexNames, te->tag) != 0)
2252 else if (strcmp(te->desc, "FUNCTION") == 0)
2254 if (!ropt->selFunction)
2256 if (ropt->functionNames && strcmp(ropt->functionNames, te->tag) != 0)
2259 else if (strcmp(te->desc, "TRIGGER") == 0)
2261 if (!ropt->selTrigger)
2263 if (ropt->triggerNames && strcmp(ropt->triggerNames, te->tag) != 0)
2271 * Check if we had a dataDumper. Indicates if the entry is schema or data
2276 * Special Case: If 'SEQUENCE SET' then it is considered a data entry
2278 if (strcmp(te->desc, "SEQUENCE SET") == 0)
2279 res = res & REQ_DATA;
2281 res = res & ~REQ_DATA;
2285 * Special case: <Init> type with <Max OID> tag; this is obsolete and we
2288 if ((strcmp(te->desc, "<Init>") == 0) && (strcmp(te->tag, "Max OID") == 0))
2291 /* Mask it if we only want schema */
2292 if (ropt->schemaOnly)
2293 res = res & REQ_SCHEMA;
2295 /* Mask it we only want data */
2297 res = res & REQ_DATA;
2299 /* Mask it if we don't have a schema contribution */
2300 if (!te->defn || strlen(te->defn) == 0)
2301 res = res & ~REQ_SCHEMA;
2303 /* Finally, if there's a per-ID filter, limit based on that as well */
2304 if (ropt->idWanted && !ropt->idWanted[te->dumpId - 1])
2311 * Issue SET commands for parameters that we want to have set the same way
2312 * at all times during execution of a restore script.
2315 _doSetFixedOutputState(ArchiveHandle *AH)
2317 /* Disable statement_timeout in archive for pg_restore/psql */
2318 ahprintf(AH, "SET statement_timeout = 0;\n");
2320 /* Select the correct character set encoding */
2321 ahprintf(AH, "SET client_encoding = '%s';\n",
2322 pg_encoding_to_char(AH->public.encoding));
2324 /* Select the correct string literal syntax */
2325 ahprintf(AH, "SET standard_conforming_strings = %s;\n",
2326 AH->public.std_strings ? "on" : "off");
2328 /* Select the role to be used during restore */
2329 if (AH->ropt && AH->ropt->use_role)
2330 ahprintf(AH, "SET ROLE %s;\n", fmtId(AH->ropt->use_role));
2332 /* Make sure function checking is disabled */
2333 ahprintf(AH, "SET check_function_bodies = false;\n");
2335 /* Avoid annoying notices etc */
2336 ahprintf(AH, "SET client_min_messages = warning;\n");
2337 if (!AH->public.std_strings)
2338 ahprintf(AH, "SET escape_string_warning = off;\n");
2344 * Issue a SET SESSION AUTHORIZATION command. Caller is responsible
2345 * for updating state if appropriate. If user is NULL or an empty string,
2346 * the specification DEFAULT will be used.
2349 _doSetSessionAuth(ArchiveHandle *AH, const char *user)
2351 PQExpBuffer cmd = createPQExpBuffer();
2353 appendPQExpBuffer(cmd, "SET SESSION AUTHORIZATION ");
2356 * SQL requires a string literal here. Might as well be correct.
2359 appendStringLiteralAHX(cmd, user, AH);
2361 appendPQExpBuffer(cmd, "DEFAULT");
2362 appendPQExpBuffer(cmd, ";");
2364 if (RestoringToDB(AH))
2368 res = PQexec(AH->connection, cmd->data);
2370 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2371 /* NOT warn_or_die_horribly... use -O instead to skip this. */
2372 die_horribly(AH, modulename, "could not set session user to \"%s\": %s",
2373 user, PQerrorMessage(AH->connection));
2378 ahprintf(AH, "%s\n\n", cmd->data);
2380 destroyPQExpBuffer(cmd);
2385 * Issue a SET default_with_oids command. Caller is responsible
2386 * for updating state if appropriate.
2389 _doSetWithOids(ArchiveHandle *AH, const bool withOids)
2391 PQExpBuffer cmd = createPQExpBuffer();
2393 appendPQExpBuffer(cmd, "SET default_with_oids = %s;", withOids ?
2396 if (RestoringToDB(AH))
2400 res = PQexec(AH->connection, cmd->data);
2402 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2403 warn_or_die_horribly(AH, modulename,
2404 "could not set default_with_oids: %s",
2405 PQerrorMessage(AH->connection));
2410 ahprintf(AH, "%s\n\n", cmd->data);
2412 destroyPQExpBuffer(cmd);
2417 * Issue the commands to connect to the specified database.
2419 * If we're currently restoring right into a database, this will
2420 * actually establish a connection. Otherwise it puts a \connect into
2421 * the script output.
2423 * NULL dbname implies reconnecting to the current DB (pretty useless).
2426 _reconnectToDB(ArchiveHandle *AH, const char *dbname)
2428 if (RestoringToDB(AH))
2429 ReconnectToServer(AH, dbname, NULL);
2432 PQExpBuffer qry = createPQExpBuffer();
2434 appendPQExpBuffer(qry, "\\connect %s\n\n",
2435 dbname ? fmtId(dbname) : "-");
2436 ahprintf(AH, "%s", qry->data);
2437 destroyPQExpBuffer(qry);
2441 * NOTE: currUser keeps track of what the imaginary session user in our
2442 * script is. It's now effectively reset to the original userID.
2446 AH->currUser = NULL;
2448 /* don't assume we still know the output schema, tablespace, etc either */
2450 free(AH->currSchema);
2451 AH->currSchema = NULL;
2452 if (AH->currTablespace)
2453 free(AH->currTablespace);
2454 AH->currTablespace = NULL;
2455 AH->currWithOids = -1;
2457 /* re-establish fixed state */
2458 _doSetFixedOutputState(AH);
2462 * Become the specified user, and update state to avoid redundant commands
2464 * NULL or empty argument is taken to mean restoring the session default
2467 _becomeUser(ArchiveHandle *AH, const char *user)
2470 user = ""; /* avoid null pointers */
2472 if (AH->currUser && strcmp(AH->currUser, user) == 0)
2473 return; /* no need to do anything */
2475 _doSetSessionAuth(AH, user);
2478 * NOTE: currUser keeps track of what the imaginary session user in our
2483 AH->currUser = strdup(user);
2487 * Become the owner of the the given TOC entry object. If
2488 * changes in ownership are not allowed, this doesn't do anything.
2491 _becomeOwner(ArchiveHandle *AH, TocEntry *te)
2493 if (AH->ropt && (AH->ropt->noOwner || !AH->ropt->use_setsessauth))
2496 _becomeUser(AH, te->owner);
2501 * Set the proper default_with_oids value for the table.
2504 _setWithOids(ArchiveHandle *AH, TocEntry *te)
2506 if (AH->currWithOids != te->withOids)
2508 _doSetWithOids(AH, te->withOids);
2509 AH->currWithOids = te->withOids;
2515 * Issue the commands to select the specified schema as the current schema
2516 * in the target database.
2519 _selectOutputSchema(ArchiveHandle *AH, const char *schemaName)
2523 if (!schemaName || *schemaName == '\0' ||
2524 (AH->currSchema && strcmp(AH->currSchema, schemaName) == 0))
2525 return; /* no need to do anything */
2527 qry = createPQExpBuffer();
2529 appendPQExpBuffer(qry, "SET search_path = %s",
2531 if (strcmp(schemaName, "pg_catalog") != 0)
2532 appendPQExpBuffer(qry, ", pg_catalog");
2534 if (RestoringToDB(AH))
2538 res = PQexec(AH->connection, qry->data);
2540 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2541 warn_or_die_horribly(AH, modulename,
2542 "could not set search_path to \"%s\": %s",
2543 schemaName, PQerrorMessage(AH->connection));
2548 ahprintf(AH, "%s;\n\n", qry->data);
2551 free(AH->currSchema);
2552 AH->currSchema = strdup(schemaName);
2554 destroyPQExpBuffer(qry);
2558 * Issue the commands to select the specified tablespace as the current one
2559 * in the target database.
2562 _selectTablespace(ArchiveHandle *AH, const char *tablespace)
2568 /* do nothing in --no-tablespaces mode */
2569 if (AH->ropt->noTablespace)
2572 have = AH->currTablespace;
2575 /* no need to do anything for non-tablespace object */
2579 if (have && strcmp(want, have) == 0)
2580 return; /* no need to do anything */
2582 qry = createPQExpBuffer();
2584 if (strcmp(want, "") == 0)
2586 /* We want the tablespace to be the database's default */
2587 appendPQExpBuffer(qry, "SET default_tablespace = ''");
2591 /* We want an explicit tablespace */
2592 appendPQExpBuffer(qry, "SET default_tablespace = %s", fmtId(want));
2595 if (RestoringToDB(AH))
2599 res = PQexec(AH->connection, qry->data);
2601 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2602 warn_or_die_horribly(AH, modulename,
2603 "could not set default_tablespace to %s: %s",
2604 fmtId(want), PQerrorMessage(AH->connection));
2609 ahprintf(AH, "%s;\n\n", qry->data);
2611 if (AH->currTablespace)
2612 free(AH->currTablespace);
2613 AH->currTablespace = strdup(want);
2615 destroyPQExpBuffer(qry);
2619 * Extract an object description for a TOC entry, and append it to buf.
2621 * This is not quite as general as it may seem, since it really only
2622 * handles constructing the right thing to put into ALTER ... OWNER TO.
2624 * The whole thing is pretty grotty, but we are kind of stuck since the
2625 * information used is all that's available in older dump files.
2628 _getObjectDescription(PQExpBuffer buf, TocEntry *te, ArchiveHandle *AH)
2630 const char *type = te->desc;
2632 /* Use ALTER TABLE for views and sequences */
2633 if (strcmp(type, "VIEW") == 0 || strcmp(type, "SEQUENCE") == 0)
2636 /* objects named by a schema and name */
2637 if (strcmp(type, "CONVERSION") == 0 ||
2638 strcmp(type, "DOMAIN") == 0 ||
2639 strcmp(type, "TABLE") == 0 ||
2640 strcmp(type, "TYPE") == 0 ||
2641 strcmp(type, "TEXT SEARCH DICTIONARY") == 0 ||
2642 strcmp(type, "TEXT SEARCH CONFIGURATION") == 0)
2644 appendPQExpBuffer(buf, "%s ", type);
2645 if (te->namespace && te->namespace[0]) /* is null pre-7.3 */
2646 appendPQExpBuffer(buf, "%s.", fmtId(te->namespace));
2649 * Pre-7.3 pg_dump would sometimes (not always) put a fmtId'd name
2650 * into te->tag for an index. This check is heuristic, so make its
2651 * scope as narrow as possible.
2653 if (AH->version < K_VERS_1_7 &&
2654 te->tag[0] == '"' &&
2655 te->tag[strlen(te->tag) - 1] == '"' &&
2656 strcmp(type, "INDEX") == 0)
2657 appendPQExpBuffer(buf, "%s", te->tag);
2659 appendPQExpBuffer(buf, "%s", fmtId(te->tag));
2663 /* objects named by just a name */
2664 if (strcmp(type, "DATABASE") == 0 ||
2665 strcmp(type, "PROCEDURAL LANGUAGE") == 0 ||
2666 strcmp(type, "SCHEMA") == 0 ||
2667 strcmp(type, "FOREIGN DATA WRAPPER") == 0 ||
2668 strcmp(type, "SERVER") == 0 ||
2669 strcmp(type, "USER MAPPING") == 0)
2671 appendPQExpBuffer(buf, "%s %s", type, fmtId(te->tag));
2676 * These object types require additional decoration. Fortunately, the
2677 * information needed is exactly what's in the DROP command.
2679 if (strcmp(type, "AGGREGATE") == 0 ||
2680 strcmp(type, "FUNCTION") == 0 ||
2681 strcmp(type, "OPERATOR") == 0 ||
2682 strcmp(type, "OPERATOR CLASS") == 0 ||
2683 strcmp(type, "OPERATOR FAMILY") == 0)
2685 /* Chop "DROP " off the front and make a modifiable copy */
2686 char *first = strdup(te->dropStmt + 5);
2689 /* point to last character in string */
2690 last = first + strlen(first) - 1;
2692 /* Strip off any ';' or '\n' at the end */
2693 while (last >= first && (*last == '\n' || *last == ';'))
2697 appendPQExpBufferStr(buf, first);
2703 write_msg(modulename, "WARNING: don't know how to set owner for object type %s\n",
2708 _printTocEntry(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt, bool isData, bool acl_pass)
2710 /* ACLs are dumped only during acl pass */
2713 if (strcmp(te->desc, "ACL") != 0)
2718 if (strcmp(te->desc, "ACL") == 0)
2723 * Avoid dumping the public schema, as it will already be created ...
2724 * unless we are using --clean mode, in which case it's been deleted and
2725 * we'd better recreate it. Likewise for its comment, if any.
2727 if (!ropt->dropSchema)
2729 if (strcmp(te->desc, "SCHEMA") == 0 &&
2730 strcmp(te->tag, "public") == 0)
2732 /* The comment restore would require super-user privs, so avoid it. */
2733 if (strcmp(te->desc, "COMMENT") == 0 &&
2734 strcmp(te->tag, "SCHEMA public") == 0)
2738 /* Select owner, schema, and tablespace as necessary */
2739 _becomeOwner(AH, te);
2740 _selectOutputSchema(AH, te->namespace);
2741 _selectTablespace(AH, te->tablespace);
2743 /* Set up OID mode too */
2744 if (strcmp(te->desc, "TABLE") == 0)
2745 _setWithOids(AH, te);
2747 /* Emit header comment for item */
2748 if (!AH->noTocComments)
2757 ahprintf(AH, "--\n");
2758 if (AH->public.verbose)
2760 ahprintf(AH, "-- TOC entry %d (class %u OID %u)\n",
2761 te->dumpId, te->catalogId.tableoid, te->catalogId.oid);
2766 ahprintf(AH, "-- Dependencies:");
2767 for (i = 0; i < te->nDeps; i++)
2768 ahprintf(AH, " %d", te->dependencies[i]);
2772 ahprintf(AH, "-- %sName: %s; Type: %s; Schema: %s; Owner: %s",
2773 pfx, te->tag, te->desc,
2774 te->namespace ? te->namespace : "-",
2775 ropt->noOwner ? "-" : te->owner);
2776 if (te->tablespace && !ropt->noTablespace)
2777 ahprintf(AH, "; Tablespace: %s", te->tablespace);
2780 if (AH->PrintExtraTocPtr !=NULL)
2781 (*AH->PrintExtraTocPtr) (AH, te);
2782 ahprintf(AH, "--\n\n");
2786 * Actually print the definition.
2788 * Really crude hack for suppressing AUTHORIZATION clause that old pg_dump
2789 * versions put into CREATE SCHEMA. We have to do this when --no-owner
2790 * mode is selected. This is ugly, but I see no other good way ...
2792 if (ropt->noOwner && strcmp(te->desc, "SCHEMA") == 0)
2794 ahprintf(AH, "CREATE SCHEMA %s;\n\n\n", fmtId(te->tag));
2798 if (strlen(te->defn) > 0)
2799 ahprintf(AH, "%s\n\n", te->defn);
2803 * If we aren't using SET SESSION AUTH to determine ownership, we must
2804 * instead issue an ALTER OWNER command. We assume that anything without
2805 * a DROP command is not a separately ownable object. All the categories
2806 * with DROP commands must appear in one list or the other.
2808 if (!ropt->noOwner && !ropt->use_setsessauth &&
2809 strlen(te->owner) > 0 && strlen(te->dropStmt) > 0)
2811 if (strcmp(te->desc, "AGGREGATE") == 0 ||
2812 strcmp(te->desc, "CONVERSION") == 0 ||
2813 strcmp(te->desc, "DATABASE") == 0 ||
2814 strcmp(te->desc, "DOMAIN") == 0 ||
2815 strcmp(te->desc, "FUNCTION") == 0 ||
2816 strcmp(te->desc, "OPERATOR") == 0 ||
2817 strcmp(te->desc, "OPERATOR CLASS") == 0 ||
2818 strcmp(te->desc, "OPERATOR FAMILY") == 0 ||
2819 strcmp(te->desc, "PROCEDURAL LANGUAGE") == 0 ||
2820 strcmp(te->desc, "SCHEMA") == 0 ||
2821 strcmp(te->desc, "TABLE") == 0 ||
2822 strcmp(te->desc, "TYPE") == 0 ||
2823 strcmp(te->desc, "VIEW") == 0 ||
2824 strcmp(te->desc, "SEQUENCE") == 0 ||
2825 strcmp(te->desc, "TEXT SEARCH DICTIONARY") == 0 ||
2826 strcmp(te->desc, "TEXT SEARCH CONFIGURATION") == 0 ||
2827 strcmp(te->desc, "FOREIGN DATA WRAPPER") == 0 ||
2828 strcmp(te->desc, "SERVER") == 0)
2830 PQExpBuffer temp = createPQExpBuffer();
2832 appendPQExpBuffer(temp, "ALTER ");
2833 _getObjectDescription(temp, te, AH);
2834 appendPQExpBuffer(temp, " OWNER TO %s;", fmtId(te->owner));
2835 ahprintf(AH, "%s\n\n", temp->data);
2836 destroyPQExpBuffer(temp);
2838 else if (strcmp(te->desc, "CAST") == 0 ||
2839 strcmp(te->desc, "CHECK CONSTRAINT") == 0 ||
2840 strcmp(te->desc, "CONSTRAINT") == 0 ||
2841 strcmp(te->desc, "DEFAULT") == 0 ||
2842 strcmp(te->desc, "FK CONSTRAINT") == 0 ||
2843 strcmp(te->desc, "INDEX") == 0 ||
2844 strcmp(te->desc, "RULE") == 0 ||
2845 strcmp(te->desc, "TRIGGER") == 0 ||
2846 strcmp(te->desc, "USER MAPPING") == 0)
2848 /* these object types don't have separate owners */
2852 write_msg(modulename, "WARNING: don't know how to set owner for object type %s\n",
2858 * If it's an ACL entry, it might contain SET SESSION AUTHORIZATION
2859 * commands, so we can no longer assume we know the current auth setting.
2861 if (strncmp(te->desc, "ACL", 3) == 0)
2865 AH->currUser = NULL;
2870 WriteHead(ArchiveHandle *AH)
2874 (*AH->WriteBufPtr) (AH, "PGDMP", 5); /* Magic code */
2875 (*AH->WriteBytePtr) (AH, AH->vmaj);
2876 (*AH->WriteBytePtr) (AH, AH->vmin);
2877 (*AH->WriteBytePtr) (AH, AH->vrev);
2878 (*AH->WriteBytePtr) (AH, AH->intSize);
2879 (*AH->WriteBytePtr) (AH, AH->offSize);
2880 (*AH->WriteBytePtr) (AH, AH->format);
2883 if (AH->compression != 0)
2884 write_msg(modulename, "WARNING: requested compression not available in this "
2885 "installation -- archive will be uncompressed\n");
2887 AH->compression = 0;
2890 WriteInt(AH, AH->compression);
2892 crtm = *localtime(&AH->createDate);
2893 WriteInt(AH, crtm.tm_sec);
2894 WriteInt(AH, crtm.tm_min);
2895 WriteInt(AH, crtm.tm_hour);
2896 WriteInt(AH, crtm.tm_mday);
2897 WriteInt(AH, crtm.tm_mon);
2898 WriteInt(AH, crtm.tm_year);
2899 WriteInt(AH, crtm.tm_isdst);
2900 WriteStr(AH, PQdb(AH->connection));
2901 WriteStr(AH, AH->public.remoteVersionStr);
2902 WriteStr(AH, PG_VERSION);
2906 ReadHead(ArchiveHandle *AH)
2912 /* If we haven't already read the header... */
2913 if (!AH->readHeader)
2915 if ((*AH->ReadBufPtr) (AH, tmpMag, 5) != 5)
2916 die_horribly(AH, modulename, "unexpected end of file\n");
2918 if (strncmp(tmpMag, "PGDMP", 5) != 0)
2919 die_horribly(AH, modulename, "did not find magic string in file header\n");
2921 AH->vmaj = (*AH->ReadBytePtr) (AH);
2922 AH->vmin = (*AH->ReadBytePtr) (AH);
2924 if (AH->vmaj > 1 || ((AH->vmaj == 1) && (AH->vmin > 0))) /* Version > 1.0 */
2925 AH->vrev = (*AH->ReadBytePtr) (AH);
2929 AH->version = ((AH->vmaj * 256 + AH->vmin) * 256 + AH->vrev) * 256 + 0;
2932 if (AH->version < K_VERS_1_0 || AH->version > K_VERS_MAX)
2933 die_horribly(AH, modulename, "unsupported version (%d.%d) in file header\n",
2934 AH->vmaj, AH->vmin);
2936 AH->intSize = (*AH->ReadBytePtr) (AH);
2937 if (AH->intSize > 32)
2938 die_horribly(AH, modulename, "sanity check on integer size (%lu) failed\n",
2939 (unsigned long) AH->intSize);
2941 if (AH->intSize > sizeof(int))
2942 write_msg(modulename, "WARNING: archive was made on a machine with larger integers, some operations might fail\n");
2944 if (AH->version >= K_VERS_1_7)
2945 AH->offSize = (*AH->ReadBytePtr) (AH);
2947 AH->offSize = AH->intSize;
2949 fmt = (*AH->ReadBytePtr) (AH);
2951 if (AH->format != fmt)
2952 die_horribly(AH, modulename, "expected format (%d) differs from format found in file (%d)\n",
2956 if (AH->version >= K_VERS_1_2)
2958 if (AH->version < K_VERS_1_4)
2959 AH->compression = (*AH->ReadBytePtr) (AH);
2961 AH->compression = ReadInt(AH);
2964 AH->compression = Z_DEFAULT_COMPRESSION;
2967 if (AH->compression != 0)
2968 write_msg(modulename, "WARNING: archive is compressed, but this installation does not support compression -- no data will be available\n");
2971 if (AH->version >= K_VERS_1_4)
2973 crtm.tm_sec = ReadInt(AH);
2974 crtm.tm_min = ReadInt(AH);
2975 crtm.tm_hour = ReadInt(AH);
2976 crtm.tm_mday = ReadInt(AH);
2977 crtm.tm_mon = ReadInt(AH);
2978 crtm.tm_year = ReadInt(AH);
2979 crtm.tm_isdst = ReadInt(AH);
2981 AH->archdbname = ReadStr(AH);
2983 AH->createDate = mktime(&crtm);
2985 if (AH->createDate == (time_t) -1)
2986 write_msg(modulename, "WARNING: invalid creation date in header\n");
2989 if (AH->version >= K_VERS_1_10)
2991 AH->archiveRemoteVersion = ReadStr(AH);
2992 AH->archiveDumpVersion = ReadStr(AH);
3000 * check to see if fseek can be performed.
3005 if (fseeko(fp, 0, SEEK_CUR) != 0)
3007 else if (sizeof(pgoff_t) > sizeof(long))
3010 * At this point, pgoff_t is too large for long, so we return based on
3011 * whether an pgoff_t version of fseek is available.
3028 dumpTimestamp(ArchiveHandle *AH, const char *msg, time_t tim)
3033 * We don't print the timezone on Win32, because the names are long and
3034 * localized, which means they may contain characters in various random
3035 * encodings; this has been seen to cause encoding errors when reading the
3038 if (strftime(buf, sizeof(buf),
3040 "%Y-%m-%d %H:%M:%S %Z",
3042 "%Y-%m-%d %H:%M:%S",
3044 localtime(&tim)) != 0)
3045 ahprintf(AH, "-- %s %s\n\n", msg, buf);
3050 * Main engine for parallel restore.
3052 * Work is done in three phases.
3053 * First we process tocEntries until we come to one that is marked
3054 * SECTION_DATA or SECTION_POST_DATA, in a single connection, just as for a
3055 * standard restore. Second we process the remaining non-ACL steps in
3056 * parallel worker children (threads on Windows, processes on Unix), each of
3057 * which connects separately to the database. Finally we process all the ACL
3058 * entries in a single connection (that happens back in RestoreArchive).
3061 restore_toc_entries_parallel(ArchiveHandle *AH)
3063 RestoreOptions *ropt = AH->ropt;
3064 int n_slots = ropt->number_of_jobs;
3065 ParallelSlot *slots;
3068 TocEntry *first_unprocessed = AH->toc->next;
3069 TocEntry *next_work_item;
3073 ahlog(AH,2,"entering restore_toc_entries_parallel\n");
3075 /* we haven't got round to making this work for all archive formats */
3076 if (AH->ClonePtr == NULL || AH->ReopenPtr == NULL)
3077 die_horribly(AH, modulename, "parallel restore is not supported with this archive file format\n");
3079 slots = (ParallelSlot *) calloc(sizeof(ParallelSlot), n_slots);
3081 /* Adjust dependency information */
3082 fix_dependencies(AH);
3085 * Do all the early stuff in a single connection in the parent.
3086 * There's no great point in running it in parallel, in fact it will
3087 * actually run faster in a single connection because we avoid all the
3088 * connection and setup overhead.
3090 while ((next_work_item = get_next_work_item(AH, &first_unprocessed,
3093 if (next_work_item->section == SECTION_DATA ||
3094 next_work_item->section == SECTION_POST_DATA)
3097 ahlog(AH, 1, "processing item %d %s %s\n",
3098 next_work_item->dumpId,
3099 next_work_item->desc, next_work_item->tag);
3101 (void) restore_toc_entry(AH, next_work_item, ropt, false);
3103 next_work_item->restored = true;
3104 reduce_dependencies(AH, next_work_item);
3108 * Now close parent connection in prep for parallel steps. We do this
3109 * mainly to ensure that we don't exceed the specified number of parallel
3112 PQfinish(AH->connection);
3113 AH->connection = NULL;
3115 /* blow away any transient state from the old connection */
3118 AH->currUser = NULL;
3120 free(AH->currSchema);
3121 AH->currSchema = NULL;
3122 if (AH->currTablespace)
3123 free(AH->currTablespace);
3124 AH->currTablespace = NULL;
3125 AH->currWithOids = -1;
3130 * Keep going until there is no worker still running AND there is no work
3134 ahlog(AH,1,"entering main parallel loop\n");
3136 while ((next_work_item = get_next_work_item(AH, &first_unprocessed,
3137 slots, n_slots)) != NULL ||
3138 work_in_progress(slots, n_slots))
3140 if (next_work_item != NULL)
3144 /* If not to be dumped, don't waste time launching a worker */
3145 reqs = _tocEntryRequired(next_work_item, AH->ropt, false);
3146 if ((reqs & (REQ_SCHEMA | REQ_DATA)) == 0)
3148 ahlog(AH, 1, "skipping item %d %s %s\n",
3149 next_work_item->dumpId,
3150 next_work_item->desc, next_work_item->tag);
3152 next_work_item->restored = true;
3153 reduce_dependencies(AH, next_work_item);
3158 if ((next_slot = get_next_slot(slots, n_slots)) != NO_SLOT)
3160 /* There is work still to do and a worker slot available */
3164 ahlog(AH, 1, "launching item %d %s %s\n",
3165 next_work_item->dumpId,
3166 next_work_item->desc, next_work_item->tag);
3168 next_work_item->restored = true;
3170 /* this memory is dealloced in mark_work_done() */
3171 args = malloc(sizeof(RestoreArgs));
3172 args->AH = CloneArchive(AH);
3173 args->te = next_work_item;
3175 /* run the step in a worker child */
3176 child = spawn_restore(args);
3178 slots[next_slot].child_id = child;
3179 slots[next_slot].args = args;
3186 * If we get here there must be work being done. Either there is no
3187 * work available to schedule (and work_in_progress returned true) or
3188 * there are no slots available. So we wait for a worker to finish,
3189 * and process the result.
3191 ret_child = reap_child(slots, n_slots, &work_status);
3193 if (WIFEXITED(work_status))
3195 mark_work_done(AH, ret_child, WEXITSTATUS(work_status),
3200 die_horribly(AH, modulename, "worker process crashed: status %d\n",
3205 ahlog(AH,1,"finished main parallel loop\n");
3208 * Now reconnect the single parent connection.
3210 ConnectDatabase((Archive *) AH, ropt->dbname,
3211 ropt->pghost, ropt->pgport, ropt->username,
3212 ropt->promptPassword);
3214 _doSetFixedOutputState(AH);
3217 * Make sure there is no non-ACL work left due to, say,
3218 * circular dependencies, or some other pathological condition.
3219 * If so, do it in the single parent connection.
3221 for (te = AH->toc->next; te != AH->toc; te = te->next)
3225 ahlog(AH, 1, "processing missed item %d %s %s\n",
3226 te->dumpId, te->desc, te->tag);
3227 (void) restore_toc_entry(AH, te, ropt, false);
3231 /* The ACLs will be handled back in RestoreArchive. */
3235 * create a worker child to perform a restore step in parallel
3238 spawn_restore(RestoreArgs *args)
3242 /* Ensure stdio state is quiesced before forking */
3249 /* in child process */
3250 parallel_restore(args);
3251 die_horribly(args->AH, modulename,
3252 "parallel_restore should not return\n");
3257 die_horribly(args->AH, modulename,
3258 "could not create worker process: %s\n",
3262 child = (HANDLE) _beginthreadex(NULL, 0, (void *) parallel_restore,
3265 die_horribly(args->AH, modulename,
3266 "could not create worker thread: %s\n",
3274 * collect status from a completed worker child
3277 reap_child(ParallelSlot *slots, int n_slots, int *work_status)
3280 /* Unix is so much easier ... */
3281 return wait(work_status);
3283 static HANDLE *handles = NULL;
3284 int hindex, snum, tnum;
3288 /* first time around only, make space for handles to listen on */
3289 if (handles == NULL)
3290 handles = (HANDLE *) calloc(sizeof(HANDLE),n_slots);
3292 /* set up list of handles to listen to */
3293 for (snum=0, tnum=0; snum < n_slots; snum++)
3294 if (slots[snum].child_id != 0)
3295 handles[tnum++] = slots[snum].child_id;
3297 /* wait for one to finish */
3298 hindex = WaitForMultipleObjects(tnum, handles, false, INFINITE);
3300 /* get handle of finished thread */
3301 ret_child = handles[hindex - WAIT_OBJECT_0];
3303 /* get the result */
3304 GetExitCodeThread(ret_child,&res);
3307 /* dispose of handle to stop leaks */
3308 CloseHandle(ret_child);
3315 * are we doing anything now?
3318 work_in_progress(ParallelSlot *slots, int n_slots)
3322 for (i = 0; i < n_slots; i++)
3324 if (slots[i].child_id != 0)
3331 * find the first free parallel slot (if any).
3334 get_next_slot(ParallelSlot *slots, int n_slots)
3338 for (i = 0; i < n_slots; i++)
3340 if (slots[i].child_id == 0)
3347 * Find the next work item (if any) that is capable of being run now.
3349 * To qualify, the item must have no remaining dependencies
3350 * and no requirement for locks that is incompatible with
3351 * items currently running.
3353 * first_unprocessed is state data that tracks the location of the first
3354 * TocEntry that's not marked 'restored'. This avoids O(N^2) search time
3355 * with long TOC lists. (Even though the constant is pretty small, it'd
3356 * get us eventually.)
3358 * pref_non_data is for an alternative selection algorithm that gives
3359 * preference to non-data items if there is already a data load running.
3360 * It is currently disabled.
3363 get_next_work_item(ArchiveHandle *AH, TocEntry **first_unprocessed,
3364 ParallelSlot *slots, int n_slots)
3366 bool pref_non_data = false; /* or get from AH->ropt */
3367 TocEntry *data_te = NULL;
3372 * Bogus heuristics for pref_non_data
3378 for (k=0; k < n_slots; k++)
3379 if (slots[k].args->te != NULL &&
3380 slots[k].args->te->section == SECTION_DATA)
3382 if (n_slots == 0 || count * 4 < n_slots)
3383 pref_non_data = false;
3387 * Advance first_unprocessed if possible.
3389 for (te = *first_unprocessed; te != AH->toc; te = te->next)
3394 *first_unprocessed = te;
3397 * Search from first_unprocessed until we find an available item.
3399 for (; te != AH->toc; te = te->next)
3401 bool conflicts = false;
3403 /* Ignore if already done or still waiting on dependencies */
3404 if (te->restored || te->depCount > 0)
3408 * Check to see if the item would need exclusive lock on something
3409 * that a currently running item also needs lock on. If so, we
3410 * don't want to schedule them together.
3412 for (i = 0; i < n_slots && !conflicts; i++)
3414 TocEntry *running_te;
3416 if (slots[i].args == NULL)
3418 running_te = slots[i].args->te;
3419 for (j = 0; j < te->nLockDeps && !conflicts; j++)
3421 for (k = 0; k < running_te->nLockDeps; k++)
3423 if (te->lockDeps[j] == running_te->lockDeps[k])
3435 if (pref_non_data && te->section == SECTION_DATA)
3437 if (data_te == NULL)
3442 /* passed all tests, so this item can run */
3446 if (data_te != NULL)
3449 ahlog(AH,2,"no item ready\n");
3455 * Restore a single TOC item in parallel with others
3457 * this is the procedure run as a thread (Windows) or a
3458 * separate process (everything else).
3460 static parallel_restore_result
3461 parallel_restore(RestoreArgs *args)
3463 ArchiveHandle *AH = args->AH;
3464 TocEntry *te = args->te;
3465 RestoreOptions *ropt = AH->ropt;
3469 * Close and reopen the input file so we have a private file pointer
3470 * that doesn't stomp on anyone else's file pointer, if we're actually
3471 * going to need to read from the file. Otherwise, just close it
3472 * except on Windows, where it will possibly be needed by other threads.
3474 * Note: on Windows, since we are using threads not processes, the
3475 * reopen call *doesn't* close the original file pointer but just open
3478 if (te->section == SECTION_DATA )
3479 (AH->ReopenPtr) (AH);
3482 (AH->ClosePtr) (AH);
3486 * We need our own database connection, too
3488 ConnectDatabase((Archive *) AH, ropt->dbname,
3489 ropt->pghost, ropt->pgport, ropt->username,
3490 ropt->promptPassword);
3492 _doSetFixedOutputState(AH);
3494 /* Restore the TOC item */
3495 retval = restore_toc_entry(AH, te, ropt, true);
3498 PQfinish(AH->connection);
3499 AH->connection = NULL;
3501 /* If we reopened the file, we are done with it, so close it now */
3502 if (te->section == SECTION_DATA )
3503 (AH->ClosePtr) (AH);
3505 if (retval == 0 && AH->public.n_errors)
3506 retval = WORKER_IGNORED_ERRORS;
3517 * Housekeeping to be done after a step has been parallel restored.
3519 * Clear the appropriate slot, free all the extra memory we allocated,
3520 * update status, and reduce the dependency count of any dependent items.
3523 mark_work_done(ArchiveHandle *AH, thandle worker, int status,
3524 ParallelSlot *slots, int n_slots)
3526 TocEntry *te = NULL;
3529 for (i = 0; i < n_slots; i++)
3531 if (slots[i].child_id == worker)
3533 slots[i].child_id = 0;
3534 te = slots[i].args->te;
3535 DeCloneArchive(slots[i].args->AH);
3536 free(slots[i].args);
3537 slots[i].args = NULL;
3544 die_horribly(AH, modulename, "could not find slot of finished worker\n");
3546 ahlog(AH, 1, "finished item %d %s %s\n",
3547 te->dumpId, te->desc, te->tag);
3549 if (status == WORKER_CREATE_DONE)
3550 mark_create_done(AH, te);
3551 else if (status == WORKER_INHIBIT_DATA)
3553 inhibit_data_for_failed_table(AH, te);
3554 AH->public.n_errors++;
3556 else if (status == WORKER_IGNORED_ERRORS)
3557 AH->public.n_errors++;
3558 else if (status != 0)
3559 die_horribly(AH, modulename, "worker process failed: exit code %d\n",
3562 reduce_dependencies(AH, te);
3567 * Process the dependency information into a form useful for parallel restore.
3569 * We set up depCount fields that are the number of as-yet-unprocessed
3570 * dependencies for each TOC entry.
3572 * We also identify locking dependencies so that we can avoid trying to
3573 * schedule conflicting items at the same time.
3576 fix_dependencies(ArchiveHandle *AH)
3578 TocEntry **tocsByDumpId;
3583 * For some of the steps here, it is convenient to have an array that
3584 * indexes the TOC entries by dump ID, rather than searching the TOC
3585 * list repeatedly. Entries for dump IDs not present in the TOC will
3588 * Also, initialize the depCount fields.
3590 tocsByDumpId = (TocEntry **) calloc(AH->maxDumpId, sizeof(TocEntry *));
3591 for (te = AH->toc->next; te != AH->toc; te = te->next)
3593 tocsByDumpId[te->dumpId - 1] = te;
3594 te->depCount = te->nDeps;
3598 * POST_DATA items that are shown as depending on a table need to be
3599 * re-pointed to depend on that table's data, instead. This ensures they
3600 * won't get scheduled until the data has been loaded. We handle this by
3601 * first finding TABLE/TABLE DATA pairs and then scanning all the
3604 * Note: currently, a TABLE DATA should always have exactly one
3605 * dependency, on its TABLE item. So we don't bother to search,
3606 * but look just at the first dependency. We do trouble to make sure
3607 * that it's a TABLE, if possible. However, if the dependency isn't
3608 * in the archive then just assume it was a TABLE; this is to cover
3609 * cases where the table was suppressed but we have the data and some
3610 * dependent post-data items.
3612 for (te = AH->toc->next; te != AH->toc; te = te->next)
3614 if (strcmp(te->desc, "TABLE DATA") == 0 && te->nDeps > 0)
3616 DumpId tableId = te->dependencies[0];
3618 if (tocsByDumpId[tableId - 1] == NULL ||
3619 strcmp(tocsByDumpId[tableId - 1]->desc, "TABLE") == 0)
3621 repoint_table_dependencies(AH, tableId, te->dumpId);
3627 * Pre-8.4 versions of pg_dump neglected to set up a dependency from
3628 * BLOB COMMENTS to BLOBS. Cope. (We assume there's only one BLOBS
3629 * and only one BLOB COMMENTS in such files.)
3631 if (AH->version < K_VERS_1_11)
3633 for (te = AH->toc->next; te != AH->toc; te = te->next)
3635 if (strcmp(te->desc, "BLOB COMMENTS") == 0 && te->nDeps == 0)
3639 for (te2 = AH->toc->next; te2 != AH->toc; te2 = te2->next)
3641 if (strcmp(te2->desc, "BLOBS") == 0)
3643 te->dependencies = (DumpId *) malloc(sizeof(DumpId));
3644 te->dependencies[0] = te2->dumpId;
3656 * It is possible that the dependencies list items that are not in the
3657 * archive at all. Subtract such items from the depCounts.
3659 for (te = AH->toc->next; te != AH->toc; te = te->next)
3661 for (i = 0; i < te->nDeps; i++)
3663 if (tocsByDumpId[te->dependencies[i] - 1] == NULL)
3669 * Lastly, work out the locking dependencies.
3671 for (te = AH->toc->next; te != AH->toc; te = te->next)
3673 te->lockDeps = NULL;
3675 identify_locking_dependencies(te, tocsByDumpId);
3682 * Change dependencies on tableId to depend on tableDataId instead,
3683 * but only in POST_DATA items.
3686 repoint_table_dependencies(ArchiveHandle *AH,
3687 DumpId tableId, DumpId tableDataId)
3692 for (te = AH->toc->next; te != AH->toc; te = te->next)
3694 if (te->section != SECTION_POST_DATA)
3696 for (i = 0; i < te->nDeps; i++)
3698 if (te->dependencies[i] == tableId)
3700 te->dependencies[i] = tableDataId;
3701 ahlog(AH, 2, "transferring dependency %d -> %d to %d\n",
3702 te->dumpId, tableId, tableDataId);
3709 * Identify which objects we'll need exclusive lock on in order to restore
3710 * the given TOC entry (*other* than the one identified by the TOC entry
3711 * itself). Record their dump IDs in the entry's lockDeps[] array.
3712 * tocsByDumpId[] is a convenience array to avoid searching the TOC
3713 * for each dependency.
3716 identify_locking_dependencies(TocEntry *te, TocEntry **tocsByDumpId)
3722 /* Quick exit if no dependencies at all */
3726 /* Exit if this entry doesn't need exclusive lock on other objects */
3727 if (!(strcmp(te->desc, "CONSTRAINT") == 0 ||
3728 strcmp(te->desc, "CHECK CONSTRAINT") == 0 ||
3729 strcmp(te->desc, "FK CONSTRAINT") == 0 ||
3730 strcmp(te->desc, "RULE") == 0 ||
3731 strcmp(te->desc, "TRIGGER") == 0))
3735 * We assume the item requires exclusive lock on each TABLE DATA item
3736 * listed among its dependencies. (This was originally a dependency
3737 * on the TABLE, but fix_dependencies repointed it to the data item.
3738 * Note that all the entry types we are interested in here are POST_DATA,
3739 * so they will all have been changed this way.)
3741 lockids = (DumpId *) malloc(te->nDeps * sizeof(DumpId));
3743 for (i = 0; i < te->nDeps; i++)
3745 DumpId depid = te->dependencies[i];
3747 if (tocsByDumpId[depid - 1] &&
3748 strcmp(tocsByDumpId[depid - 1]->desc, "TABLE DATA") == 0)
3749 lockids[nlockids++] = depid;
3758 te->lockDeps = realloc(lockids, nlockids * sizeof(DumpId));
3759 te->nLockDeps = nlockids;
3763 * Remove the specified TOC entry from the depCounts of items that depend on
3764 * it, thereby possibly making them ready-to-run.
3767 reduce_dependencies(ArchiveHandle *AH, TocEntry *te)
3769 DumpId target = te->dumpId;
3772 ahlog(AH,2,"reducing dependencies for %d\n",target);
3775 * We must examine all entries, not only the ones after the target item,
3776 * because if the user used a -L switch then the original dependency-
3777 * respecting order has been destroyed by SortTocFromFile.
3779 for (te = AH->toc->next; te != AH->toc; te = te->next)
3781 for (i = 0; i < te->nDeps; i++)
3783 if (te->dependencies[i] == target)
3790 * Set the created flag on the DATA member corresponding to the given
3794 mark_create_done(ArchiveHandle *AH, TocEntry *te)
3798 for (tes = AH->toc->next; tes != AH->toc; tes = tes->next)
3800 if (strcmp(tes->desc, "TABLE DATA") == 0 &&
3801 strcmp(tes->tag, te->tag) == 0 &&
3802 strcmp(tes->namespace ? tes->namespace : "",
3803 te->namespace ? te->namespace : "") == 0)
3805 tes->created = true;
3812 * Mark the DATA member corresponding to the given TABLE member
3816 inhibit_data_for_failed_table(ArchiveHandle *AH, TocEntry *te)
3818 RestoreOptions *ropt = AH->ropt;
3821 ahlog(AH, 1, "table \"%s\" could not be created, will not restore its data\n",
3824 for (tes = AH->toc->next; tes != AH->toc; tes = tes->next)
3826 if (strcmp(tes->desc, "TABLE DATA") == 0 &&
3827 strcmp(tes->tag, te->tag) == 0 &&
3828 strcmp(tes->namespace ? tes->namespace : "",
3829 te->namespace ? te->namespace : "") == 0)
3831 /* mark it unwanted; we assume idWanted array already exists */
3832 ropt->idWanted[tes->dumpId - 1] = false;
3840 * Clone and de-clone routines used in parallel restoration.
3842 * Enough of the structure is cloned to ensure that there is no
3843 * conflict between different threads each with their own clone.
3845 * These could be public, but no need at present.
3847 static ArchiveHandle *
3848 CloneArchive(ArchiveHandle *AH)
3850 ArchiveHandle *clone;
3852 /* Make a "flat" copy */
3853 clone = (ArchiveHandle *) malloc(sizeof(ArchiveHandle));
3855 die_horribly(AH, modulename, "out of memory\n");
3856 memcpy(clone, AH, sizeof(ArchiveHandle));
3858 /* Handle format-independent fields */
3859 clone->pgCopyBuf = createPQExpBuffer();
3860 clone->sqlBuf = createPQExpBuffer();
3861 clone->sqlparse.tagBuf = NULL;
3863 /* The clone will have its own connection, so disregard connection state */
3864 clone->connection = NULL;
3865 clone->currUser = NULL;
3866 clone->currSchema = NULL;
3867 clone->currTablespace = NULL;
3868 clone->currWithOids = -1;
3870 /* savedPassword must be local in case we change it while connecting */
3871 if (clone->savedPassword)
3872 clone->savedPassword = strdup(clone->savedPassword);
3874 /* clone has its own error count, too */
3875 clone->public.n_errors = 0;
3877 /* Let the format-specific code have a chance too */
3878 (clone->ClonePtr) (clone);
3884 * Release clone-local storage.
3886 * Note: we assume any clone-local connection was already closed.
3889 DeCloneArchive(ArchiveHandle *AH)
3891 /* Clear format-specific state */
3892 (AH->DeClonePtr) (AH);
3894 /* Clear state allocated by CloneArchive */
3895 destroyPQExpBuffer(AH->pgCopyBuf);
3896 destroyPQExpBuffer(AH->sqlBuf);
3897 if (AH->sqlparse.tagBuf)
3898 destroyPQExpBuffer(AH->sqlparse.tagBuf);
3900 /* Clear any connection-local state */
3904 free(AH->currSchema);
3905 if (AH->currTablespace)
3906 free(AH->currTablespace);
3907 if (AH->savedPassword)
3908 free(AH->savedPassword);