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 1.162 2009/02/02 20:07:36 adunstan 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->requirePassword);
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_threads > 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);
494 * If we have a data component, then process it
496 if ((reqs & REQ_DATA) != 0)
499 * hadDumper will be set if there is genuine data component for
500 * this node. Otherwise, we need to check the defn field for
501 * statements that need to be executed in data-only restores.
506 * If we can output the data, then restore it.
508 if (AH->PrintTocDataPtr != NULL && (reqs & REQ_DATA) != 0)
510 _printTocEntry(AH, te, ropt, true, false);
512 if (strcmp(te->desc, "BLOBS") == 0 ||
513 strcmp(te->desc, "BLOB COMMENTS") == 0)
515 ahlog(AH, 1, "restoring %s\n", te->desc);
517 _selectOutputSchema(AH, "pg_catalog");
519 (*AH->PrintTocDataPtr) (AH, te, ropt);
523 _disableTriggersIfNecessary(AH, te, ropt);
525 /* Select owner and schema as necessary */
526 _becomeOwner(AH, te);
527 _selectOutputSchema(AH, te->namespace);
529 ahlog(AH, 1, "restoring data for table \"%s\"\n",
533 * In parallel restore, if we created the table earlier
534 * in the run then we wrap the COPY in a transaction and
535 * precede it with a TRUNCATE. If archiving is not on
536 * this prevents WAL-logging the COPY. This obtains a
537 * speedup similar to that from using single_txn mode
538 * in non-parallel restores.
540 if (is_parallel && te->created)
543 * Parallel restore is always talking directly to a
544 * server, so no need to see if we should issue BEGIN.
546 StartTransaction(AH);
549 * If the server version is >= 8.4, make sure we issue
550 * TRUNCATE with ONLY so that child tables are not
553 ahprintf(AH, "TRUNCATE TABLE %s%s;\n\n",
554 (PQserverVersion(AH->connection) >= 80400 ?
560 * If we have a copy statement, use it. As of V1.3,
561 * these are separate to allow easy import from
562 * withing a database connection. Pre 1.3 archives can
563 * not use DB connections and are sent to output only.
565 * For V1.3+, the table data MUST have a copy
566 * statement so that we can go into appropriate mode
569 if (te->copyStmt && strlen(te->copyStmt) > 0)
571 ahprintf(AH, "%s", te->copyStmt);
572 AH->writingCopyData = true;
575 (*AH->PrintTocDataPtr) (AH, te, ropt);
577 AH->writingCopyData = false;
579 /* close out the transaction started above */
580 if (is_parallel && te->created)
581 CommitTransaction(AH);
583 _enableTriggersIfNecessary(AH, te, ropt);
587 else if (!defnDumped)
589 /* If we haven't already dumped the defn part, do so now */
590 ahlog(AH, 1, "executing %s %s\n", te->desc, te->tag);
591 _printTocEntry(AH, te, ropt, false, false);
599 * Allocate a new RestoreOptions block.
600 * This is mainly so we can initialize it, but also for future expansion,
603 NewRestoreOptions(void)
605 RestoreOptions *opts;
607 opts = (RestoreOptions *) calloc(1, sizeof(RestoreOptions));
609 /* set any fields that shouldn't default to zeroes */
610 opts->format = archUnknown;
616 _disableTriggersIfNecessary(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt)
618 /* This hack is only needed in a data-only restore */
619 if (!ropt->dataOnly || !ropt->disable_triggers)
622 ahlog(AH, 1, "disabling triggers for %s\n", te->tag);
625 * Become superuser if possible, since they are the only ones who can
626 * disable constraint triggers. If -S was not given, assume the initial
627 * user identity is a superuser. (XXX would it be better to become the
630 _becomeUser(AH, ropt->superuser);
635 _selectOutputSchema(AH, te->namespace);
637 ahprintf(AH, "ALTER TABLE %s DISABLE TRIGGER ALL;\n\n",
642 _enableTriggersIfNecessary(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt)
644 /* This hack is only needed in a data-only restore */
645 if (!ropt->dataOnly || !ropt->disable_triggers)
648 ahlog(AH, 1, "enabling triggers for %s\n", te->tag);
651 * Become superuser if possible, since they are the only ones who can
652 * disable constraint triggers. If -S was not given, assume the initial
653 * user identity is a superuser. (XXX would it be better to become the
656 _becomeUser(AH, ropt->superuser);
661 _selectOutputSchema(AH, te->namespace);
663 ahprintf(AH, "ALTER TABLE %s ENABLE TRIGGER ALL;\n\n",
668 * This is a routine that is part of the dumper interface, hence the 'Archive*' parameter.
673 WriteData(Archive *AHX, const void *data, size_t dLen)
675 ArchiveHandle *AH = (ArchiveHandle *) AHX;
678 die_horribly(AH, modulename, "internal error -- WriteData cannot be called outside the context of a DataDumper routine\n");
680 return (*AH->WriteDataPtr) (AH, data, dLen);
684 * Create a new TOC entry. The TOC was designed as a TOC, but is now the
685 * repository for all metadata. But the name has stuck.
690 ArchiveEntry(Archive *AHX,
691 CatalogId catalogId, DumpId dumpId,
693 const char *namespace,
694 const char *tablespace,
695 const char *owner, bool withOids,
696 const char *desc, teSection section,
698 const char *dropStmt, const char *copyStmt,
699 const DumpId *deps, int nDeps,
700 DataDumperPtr dumpFn, void *dumpArg)
702 ArchiveHandle *AH = (ArchiveHandle *) AHX;
705 newToc = (TocEntry *) calloc(1, sizeof(TocEntry));
707 die_horribly(AH, modulename, "out of memory\n");
710 if (dumpId > AH->maxDumpId)
711 AH->maxDumpId = dumpId;
713 newToc->prev = AH->toc->prev;
714 newToc->next = AH->toc;
715 AH->toc->prev->next = newToc;
716 AH->toc->prev = newToc;
718 newToc->catalogId = catalogId;
719 newToc->dumpId = dumpId;
720 newToc->section = section;
722 newToc->tag = strdup(tag);
723 newToc->namespace = namespace ? strdup(namespace) : NULL;
724 newToc->tablespace = tablespace ? strdup(tablespace) : NULL;
725 newToc->owner = strdup(owner);
726 newToc->withOids = withOids;
727 newToc->desc = strdup(desc);
728 newToc->defn = strdup(defn);
729 newToc->dropStmt = strdup(dropStmt);
730 newToc->copyStmt = copyStmt ? strdup(copyStmt) : NULL;
734 newToc->dependencies = (DumpId *) malloc(nDeps * sizeof(DumpId));
735 memcpy(newToc->dependencies, deps, nDeps * sizeof(DumpId));
736 newToc->nDeps = nDeps;
740 newToc->dependencies = NULL;
744 newToc->dataDumper = dumpFn;
745 newToc->dataDumperArg = dumpArg;
746 newToc->hadDumper = dumpFn ? true : false;
748 newToc->formatData = NULL;
750 if (AH->ArchiveEntryPtr !=NULL)
751 (*AH->ArchiveEntryPtr) (AH, newToc);
756 PrintTOCSummary(Archive *AHX, RestoreOptions *ropt)
758 ArchiveHandle *AH = (ArchiveHandle *) AHX;
764 sav = SetOutput(AH, ropt->filename, 0 /* no compression */ );
766 ahprintf(AH, ";\n; Archive created at %s", ctime(&AH->createDate));
767 ahprintf(AH, "; dbname: %s\n; TOC Entries: %d\n; Compression: %d\n",
768 AH->archdbname, AH->tocCount, AH->compression);
785 ahprintf(AH, "; Dump Version: %d.%d-%d\n", AH->vmaj, AH->vmin, AH->vrev);
786 ahprintf(AH, "; Format: %s\n", fmtName);
787 ahprintf(AH, "; Integer: %d bytes\n", (int) AH->intSize);
788 ahprintf(AH, "; Offset: %d bytes\n", (int) AH->offSize);
789 if (AH->archiveRemoteVersion)
790 ahprintf(AH, "; Dumped from database version: %s\n",
791 AH->archiveRemoteVersion);
792 if (AH->archiveDumpVersion)
793 ahprintf(AH, "; Dumped by pg_dump version: %s\n",
794 AH->archiveDumpVersion);
796 ahprintf(AH, ";\n;\n; Selected TOC Entries:\n;\n");
798 for (te = AH->toc->next; te != AH->toc; te = te->next)
800 if (ropt->verbose || _tocEntryRequired(te, ropt, true) != 0)
801 ahprintf(AH, "%d; %u %u %s %s %s %s\n", te->dumpId,
802 te->catalogId.tableoid, te->catalogId.oid,
803 te->desc, te->namespace ? te->namespace : "-",
805 if (ropt->verbose && te->nDeps > 0)
809 ahprintf(AH, ";\tdepends on:");
810 for (i = 0; i < te->nDeps; i++)
811 ahprintf(AH, " %d", te->dependencies[i]);
817 ResetOutput(AH, sav);
824 /* Called by a dumper to signal start of a BLOB */
826 StartBlob(Archive *AHX, Oid oid)
828 ArchiveHandle *AH = (ArchiveHandle *) AHX;
830 if (!AH->StartBlobPtr)
831 die_horribly(AH, modulename, "large-object output not supported in chosen format\n");
833 (*AH->StartBlobPtr) (AH, AH->currToc, oid);
838 /* Called by a dumper to signal end of a BLOB */
840 EndBlob(Archive *AHX, Oid oid)
842 ArchiveHandle *AH = (ArchiveHandle *) AHX;
845 (*AH->EndBlobPtr) (AH, AH->currToc, oid);
855 * Called by a format handler before any blobs are restored
858 StartRestoreBlobs(ArchiveHandle *AH)
860 if (!AH->ropt->single_txn)
863 StartTransaction(AH);
865 ahprintf(AH, "BEGIN;\n\n");
872 * Called by a format handler after all blobs are restored
875 EndRestoreBlobs(ArchiveHandle *AH)
877 if (!AH->ropt->single_txn)
880 CommitTransaction(AH);
882 ahprintf(AH, "COMMIT;\n\n");
885 ahlog(AH, 1, "restored %d large objects\n", AH->blobCount);
890 * Called by a format handler to initiate restoration of a blob
893 StartRestoreBlob(ArchiveHandle *AH, Oid oid)
899 /* Initialize the LO Buffer */
902 ahlog(AH, 2, "restoring large object with OID %u\n", oid);
906 loOid = lo_create(AH->connection, oid);
907 if (loOid == 0 || loOid != oid)
908 die_horribly(AH, modulename, "could not create large object %u\n",
911 AH->loFd = lo_open(AH->connection, oid, INV_WRITE);
913 die_horribly(AH, modulename, "could not open large object\n");
917 ahprintf(AH, "SELECT lo_open(lo_create(%u), %d);\n", oid, INV_WRITE);
924 EndRestoreBlob(ArchiveHandle *AH, Oid oid)
926 if (AH->lo_buf_used > 0)
928 /* Write remaining bytes from the LO buffer */
936 lo_close(AH->connection, AH->loFd);
941 ahprintf(AH, "SELECT lo_close(0);\n\n");
946 * Sorting and Reordering
950 SortTocFromFile(Archive *AHX, RestoreOptions *ropt)
952 ArchiveHandle *AH = (ArchiveHandle *) AHX;
961 /* Allocate space for the 'wanted' array, and init it */
962 ropt->idWanted = (bool *) malloc(sizeof(bool) * AH->maxDumpId);
963 memset(ropt->idWanted, 0, sizeof(bool) * AH->maxDumpId);
965 /* Set prev entry as head of list */
969 fh = fopen(ropt->tocFile, PG_BINARY_R);
971 die_horribly(AH, modulename, "could not open TOC file \"%s\": %s\n",
972 ropt->tocFile, strerror(errno));
974 while (fgets(buf, sizeof(buf), fh) != NULL)
976 /* Truncate line at comment, if any */
977 cmnt = strchr(buf, ';');
981 /* Ignore if all blank */
982 if (strspn(buf, " \t\r") == strlen(buf))
985 /* Get an ID, check it's valid and not already seen */
986 id = strtol(buf, &endptr, 10);
987 if (endptr == buf || id <= 0 || id > AH->maxDumpId ||
988 ropt->idWanted[id - 1])
990 write_msg(modulename, "WARNING: line ignored: %s\n", buf);
995 te = getTocEntryByDumpId(AH, id);
997 die_horribly(AH, modulename, "could not find entry for ID %d\n",
1000 ropt->idWanted[id - 1] = true;
1002 _moveAfter(AH, tePrev, te);
1006 if (fclose(fh) != 0)
1007 die_horribly(AH, modulename, "could not close TOC file: %s\n",
1012 * Set up a dummy ID filter that selects all dump IDs
1015 InitDummyWantedList(Archive *AHX, RestoreOptions *ropt)
1017 ArchiveHandle *AH = (ArchiveHandle *) AHX;
1019 /* Allocate space for the 'wanted' array, and init it to 1's */
1020 ropt->idWanted = (bool *) malloc(sizeof(bool) * AH->maxDumpId);
1021 memset(ropt->idWanted, 1, sizeof(bool) * AH->maxDumpId);
1024 /**********************
1025 * 'Convenience functions that look like standard IO functions
1026 * for writing data when in dump mode.
1027 **********************/
1031 archputs(const char *s, Archive *AH)
1033 return WriteData(AH, s, strlen(s));
1038 archprintf(Archive *AH, const char *fmt,...)
1042 int bSize = strlen(fmt) + 256;
1046 * This is paranoid: deal with the possibility that vsnprintf is willing
1047 * to ignore trailing null or returns > 0 even if string does not fit. It
1048 * may be the case that it returns cnt = bufsize
1050 while (cnt < 0 || cnt >= (bSize - 1))
1055 p = (char *) malloc(bSize);
1057 exit_horribly(AH, modulename, "out of memory\n");
1059 cnt = vsnprintf(p, bSize, fmt, ap);
1062 WriteData(AH, p, cnt);
1068 /*******************************
1069 * Stuff below here should be 'private' to the archiver routines
1070 *******************************/
1072 static OutputContext
1073 SetOutput(ArchiveHandle *AH, char *filename, int compression)
1078 /* Replace the AH output file handle */
1080 sav.gzOut = AH->gzOut;
1085 fn = fileno(AH->FH);
1089 filename = AH->fSpec;
1092 fn = fileno(stdout);
1094 /* If compression explicitly requested, use gzopen */
1096 if (compression != 0)
1100 /* Don't use PG_BINARY_x since this is zlib */
1101 sprintf(fmode, "wb%d", compression);
1103 AH->OF = gzdopen(dup(fn), fmode);
1105 AH->OF = gzopen(filename, fmode);
1111 if (AH->mode == archModeAppend)
1114 AH->OF = fdopen(dup(fn), PG_BINARY_A);
1116 AH->OF = fopen(filename, PG_BINARY_A);
1121 AH->OF = fdopen(dup(fn), PG_BINARY_W);
1123 AH->OF = fopen(filename, PG_BINARY_W);
1131 die_horribly(AH, modulename, "could not open output file \"%s\": %s\n",
1132 filename, strerror(errno));
1134 die_horribly(AH, modulename, "could not open output file: %s\n",
1142 ResetOutput(ArchiveHandle *AH, OutputContext sav)
1147 res = GZCLOSE(AH->OF);
1149 res = fclose(AH->OF);
1152 die_horribly(AH, modulename, "could not close output file: %s\n",
1155 AH->gzOut = sav.gzOut;
1162 * Print formatted text to the output file (usually stdout).
1165 ahprintf(ArchiveHandle *AH, const char *fmt,...)
1169 int bSize = strlen(fmt) + 256; /* Should be enough */
1173 * This is paranoid: deal with the possibility that vsnprintf is willing
1174 * to ignore trailing null
1178 * or returns > 0 even if string does not fit. It may be the case that it
1179 * returns cnt = bufsize
1181 while (cnt < 0 || cnt >= (bSize - 1))
1186 p = (char *) malloc(bSize);
1188 die_horribly(AH, modulename, "out of memory\n");
1190 cnt = vsnprintf(p, bSize, fmt, ap);
1193 ahwrite(p, 1, cnt, AH);
1199 ahlog(ArchiveHandle *AH, int level, const char *fmt,...)
1203 if (AH->debugLevel < level && (!AH->public.verbose || level > 1))
1207 _write_msg(NULL, fmt, ap);
1212 * Single place for logic which says 'We are restoring to a direct DB connection'.
1215 RestoringToDB(ArchiveHandle *AH)
1217 return (AH->ropt && AH->ropt->useDB && AH->connection);
1221 * Dump the current contents of the LO data buffer while writing a BLOB
1224 dump_lo_buf(ArchiveHandle *AH)
1230 res = lo_write(AH->connection, AH->loFd, AH->lo_buf, AH->lo_buf_used);
1231 ahlog(AH, 5, "wrote %lu bytes of large object data (result = %lu)\n",
1232 (unsigned long) AH->lo_buf_used, (unsigned long) res);
1233 if (res != AH->lo_buf_used)
1234 die_horribly(AH, modulename,
1235 "could not write to large object (result: %lu, expected: %lu)\n",
1236 (unsigned long) res, (unsigned long) AH->lo_buf_used);
1243 str = PQescapeBytea((const unsigned char *) AH->lo_buf,
1244 AH->lo_buf_used, &len);
1246 die_horribly(AH, modulename, "out of memory\n");
1248 /* Hack: turn off writingBlob so ahwrite doesn't recurse to here */
1249 AH->writingBlob = 0;
1250 ahprintf(AH, "SELECT lowrite(0, '%s');\n", str);
1251 AH->writingBlob = 1;
1255 AH->lo_buf_used = 0;
1260 * Write buffer to the output file (usually stdout). This is user for
1261 * outputting 'restore' scripts etc. It is even possible for an archive
1262 * format to create a custom output routine to 'fake' a restore if it
1263 * wants to generate a script (see TAR output).
1266 ahwrite(const void *ptr, size_t size, size_t nmemb, ArchiveHandle *AH)
1270 if (AH->writingBlob)
1272 size_t remaining = size * nmemb;
1274 while (AH->lo_buf_used + remaining > AH->lo_buf_size)
1276 size_t avail = AH->lo_buf_size - AH->lo_buf_used;
1278 memcpy((char *) AH->lo_buf + AH->lo_buf_used, ptr, avail);
1279 ptr = (const void *) ((const char *) ptr + avail);
1281 AH->lo_buf_used += avail;
1285 memcpy((char *) AH->lo_buf + AH->lo_buf_used, ptr, remaining);
1286 AH->lo_buf_used += remaining;
1288 return size * nmemb;
1292 res = GZWRITE((void *) ptr, size, nmemb, AH->OF);
1293 if (res != (nmemb * size))
1294 die_horribly(AH, modulename, "could not write to output file: %s\n", strerror(errno));
1297 else if (AH->CustomOutPtr)
1299 res = AH->CustomOutPtr (AH, ptr, size * nmemb);
1301 if (res != (nmemb * size))
1302 die_horribly(AH, modulename, "could not write to custom output routine\n");
1308 * If we're doing a restore, and it's direct to DB, and we're
1309 * connected then send it to the DB.
1311 if (RestoringToDB(AH))
1312 return ExecuteSqlCommandBuf(AH, (void *) ptr, size * nmemb); /* Always 1, currently */
1315 res = fwrite((void *) ptr, size, nmemb, AH->OF);
1317 die_horribly(AH, modulename, "could not write to output file: %s\n",
1324 /* Common exit code */
1326 _write_msg(const char *modulename, const char *fmt, va_list ap)
1329 fprintf(stderr, "%s: [%s] ", progname, _(modulename));
1331 fprintf(stderr, "%s: ", progname);
1332 vfprintf(stderr, _(fmt), ap);
1336 write_msg(const char *modulename, const char *fmt,...)
1341 _write_msg(modulename, fmt, ap);
1347 _die_horribly(ArchiveHandle *AH, const char *modulename, const char *fmt, va_list ap)
1349 _write_msg(modulename, fmt, ap);
1353 if (AH->public.verbose)
1354 write_msg(NULL, "*** aborted because of error\n");
1356 PQfinish(AH->connection);
1364 exit_horribly(Archive *AH, const char *modulename, const char *fmt,...)
1369 _die_horribly((ArchiveHandle *) AH, modulename, fmt, ap);
1373 /* Archiver use (just different arg declaration) */
1375 die_horribly(ArchiveHandle *AH, const char *modulename, const char *fmt,...)
1380 _die_horribly(AH, modulename, fmt, ap);
1384 /* on some error, we may decide to go on... */
1386 warn_or_die_horribly(ArchiveHandle *AH,
1387 const char *modulename, const char *fmt,...)
1395 /* Do nothing special */
1398 case STAGE_INITIALIZING:
1399 if (AH->stage != AH->lastErrorStage)
1400 write_msg(modulename, "Error while INITIALIZING:\n");
1403 case STAGE_PROCESSING:
1404 if (AH->stage != AH->lastErrorStage)
1405 write_msg(modulename, "Error while PROCESSING TOC:\n");
1408 case STAGE_FINALIZING:
1409 if (AH->stage != AH->lastErrorStage)
1410 write_msg(modulename, "Error while FINALIZING:\n");
1413 if (AH->currentTE != NULL && AH->currentTE != AH->lastErrorTE)
1415 write_msg(modulename, "Error from TOC entry %d; %u %u %s %s %s\n",
1416 AH->currentTE->dumpId,
1417 AH->currentTE->catalogId.tableoid, AH->currentTE->catalogId.oid,
1418 AH->currentTE->desc, AH->currentTE->tag, AH->currentTE->owner);
1420 AH->lastErrorStage = AH->stage;
1421 AH->lastErrorTE = AH->currentTE;
1424 if (AH->public.exit_on_error)
1425 _die_horribly(AH, modulename, fmt, ap);
1428 _write_msg(modulename, fmt, ap);
1429 AH->public.n_errors++;
1435 _moveAfter(ArchiveHandle *AH, TocEntry *pos, TocEntry *te)
1437 te->prev->next = te->next;
1438 te->next->prev = te->prev;
1441 te->next = pos->next;
1443 pos->next->prev = te;
1450 _moveBefore(ArchiveHandle *AH, TocEntry *pos, TocEntry *te)
1452 te->prev->next = te->next;
1453 te->next->prev = te->prev;
1455 te->prev = pos->prev;
1457 pos->prev->next = te;
1463 getTocEntryByDumpId(ArchiveHandle *AH, DumpId id)
1467 for (te = AH->toc->next; te != AH->toc; te = te->next)
1469 if (te->dumpId == id)
1476 TocIDRequired(ArchiveHandle *AH, DumpId id, RestoreOptions *ropt)
1478 TocEntry *te = getTocEntryByDumpId(AH, id);
1483 return _tocEntryRequired(te, ropt, true);
1487 WriteOffset(ArchiveHandle *AH, pgoff_t o, int wasSet)
1492 (*AH->WriteBytePtr) (AH, wasSet);
1494 /* Write out pgoff_t smallest byte first, prevents endian mismatch */
1495 for (off = 0; off < sizeof(pgoff_t); off++)
1497 (*AH->WriteBytePtr) (AH, o & 0xFF);
1500 return sizeof(pgoff_t) + 1;
1504 ReadOffset(ArchiveHandle *AH, pgoff_t * o)
1510 /* Initialize to zero */
1513 /* Check for old version */
1514 if (AH->version < K_VERS_1_7)
1516 /* Prior versions wrote offsets using WriteInt */
1518 /* -1 means not set */
1520 return K_OFFSET_POS_NOT_SET;
1522 return K_OFFSET_NO_DATA;
1524 /* Cast to pgoff_t because it was written as an int. */
1526 return K_OFFSET_POS_SET;
1530 * Read the flag indicating the state of the data pointer. Check if valid
1533 * This used to be handled by a negative or zero pointer, now we use an
1534 * extra byte specifically for the state.
1536 offsetFlg = (*AH->ReadBytePtr) (AH) & 0xFF;
1540 case K_OFFSET_POS_NOT_SET:
1541 case K_OFFSET_NO_DATA:
1542 case K_OFFSET_POS_SET:
1547 die_horribly(AH, modulename, "unexpected data offset flag %d\n", offsetFlg);
1553 for (off = 0; off < AH->offSize; off++)
1555 if (off < sizeof(pgoff_t))
1556 *o |= ((pgoff_t) ((*AH->ReadBytePtr) (AH))) << (off * 8);
1559 if ((*AH->ReadBytePtr) (AH) != 0)
1560 die_horribly(AH, modulename, "file offset in dump file is too large\n");
1568 WriteInt(ArchiveHandle *AH, int i)
1573 * This is a bit yucky, but I don't want to make the binary format very
1574 * dependent on representation, and not knowing much about it, I write out
1575 * a sign byte. If you change this, don't forget to change the file
1576 * version #, and modify readInt to read the new format AS WELL AS the old
1583 (*AH->WriteBytePtr) (AH, 1);
1587 (*AH->WriteBytePtr) (AH, 0);
1589 for (b = 0; b < AH->intSize; b++)
1591 (*AH->WriteBytePtr) (AH, i & 0xFF);
1595 return AH->intSize + 1;
1599 ReadInt(ArchiveHandle *AH)
1604 int sign = 0; /* Default positive */
1607 if (AH->version > K_VERS_1_0)
1608 /* Read a sign byte */
1609 sign = (*AH->ReadBytePtr) (AH);
1611 for (b = 0; b < AH->intSize; b++)
1613 bv = (*AH->ReadBytePtr) (AH) & 0xFF;
1615 res = res + (bv << bitShift);
1626 WriteStr(ArchiveHandle *AH, const char *c)
1632 res = WriteInt(AH, strlen(c));
1633 res += (*AH->WriteBufPtr) (AH, c, strlen(c));
1636 res = WriteInt(AH, -1);
1642 ReadStr(ArchiveHandle *AH)
1652 buf = (char *) malloc(l + 1);
1654 die_horribly(AH, modulename, "out of memory\n");
1656 if ((*AH->ReadBufPtr) (AH, (void *) buf, l) != l)
1657 die_horribly(AH, modulename, "unexpected end of file\n");
1666 _discoverArchiveFormat(ArchiveHandle *AH)
1669 char sig[6]; /* More than enough */
1674 write_msg(modulename, "attempting to ascertain archive format\n");
1678 free(AH->lookahead);
1680 AH->lookaheadSize = 512;
1681 AH->lookahead = calloc(1, 512);
1682 AH->lookaheadLen = 0;
1683 AH->lookaheadPos = 0;
1688 fh = fopen(AH->fSpec, PG_BINARY_R);
1690 die_horribly(AH, modulename, "could not open input file \"%s\": %s\n",
1691 AH->fSpec, strerror(errno));
1697 die_horribly(AH, modulename, "could not open input file: %s\n",
1701 cnt = fread(sig, 1, 5, fh);
1706 die_horribly(AH, modulename, "could not read input file: %s\n", strerror(errno));
1708 die_horribly(AH, modulename, "input file is too short (read %lu, expected 5)\n",
1709 (unsigned long) cnt);
1712 /* Save it, just in case we need it later */
1713 strncpy(&AH->lookahead[0], sig, 5);
1714 AH->lookaheadLen = 5;
1716 if (strncmp(sig, "PGDMP", 5) == 0)
1718 AH->vmaj = fgetc(fh);
1719 AH->vmin = fgetc(fh);
1721 /* Save these too... */
1722 AH->lookahead[AH->lookaheadLen++] = AH->vmaj;
1723 AH->lookahead[AH->lookaheadLen++] = AH->vmin;
1725 /* Check header version; varies from V1.0 */
1726 if (AH->vmaj > 1 || ((AH->vmaj == 1) && (AH->vmin > 0))) /* Version > 1.0 */
1728 AH->vrev = fgetc(fh);
1729 AH->lookahead[AH->lookaheadLen++] = AH->vrev;
1734 /* Make a convenient integer <maj><min><rev>00 */
1735 AH->version = ((AH->vmaj * 256 + AH->vmin) * 256 + AH->vrev) * 256 + 0;
1737 AH->intSize = fgetc(fh);
1738 AH->lookahead[AH->lookaheadLen++] = AH->intSize;
1740 if (AH->version >= K_VERS_1_7)
1742 AH->offSize = fgetc(fh);
1743 AH->lookahead[AH->lookaheadLen++] = AH->offSize;
1746 AH->offSize = AH->intSize;
1748 AH->format = fgetc(fh);
1749 AH->lookahead[AH->lookaheadLen++] = AH->format;
1754 * *Maybe* we have a tar archive format file... So, read first 512
1757 cnt = fread(&AH->lookahead[AH->lookaheadLen], 1, 512 - AH->lookaheadLen, fh);
1758 AH->lookaheadLen += cnt;
1760 if (AH->lookaheadLen != 512)
1761 die_horribly(AH, modulename, "input file does not appear to be a valid archive (too short?)\n");
1763 if (!isValidTarHeader(AH->lookahead))
1764 die_horribly(AH, modulename, "input file does not appear to be a valid archive\n");
1766 AH->format = archTar;
1769 /* If we can't seek, then mark the header as read */
1770 if (fseeko(fh, 0, SEEK_SET) != 0)
1773 * NOTE: Formats that use the lookahead buffer can unset this in their
1779 AH->lookaheadLen = 0; /* Don't bother since we've reset the file */
1782 write_msg(modulename, "read %lu bytes into lookahead buffer\n",
1783 (unsigned long) AH->lookaheadLen);
1786 /* Close the file */
1788 if (fclose(fh) != 0)
1789 die_horribly(AH, modulename, "could not close input file: %s\n",
1797 * Allocate an archive handle
1799 static ArchiveHandle *
1800 _allocAH(const char *FileSpec, const ArchiveFormat fmt,
1801 const int compression, ArchiveMode mode)
1806 write_msg(modulename, "allocating AH for %s, format %d\n", FileSpec, fmt);
1809 AH = (ArchiveHandle *) calloc(1, sizeof(ArchiveHandle));
1811 die_horribly(AH, modulename, "out of memory\n");
1813 /* AH->debugLevel = 100; */
1815 AH->vmaj = K_VERS_MAJOR;
1816 AH->vmin = K_VERS_MINOR;
1817 AH->vrev = K_VERS_REV;
1819 /* initialize for backwards compatible string processing */
1820 AH->public.encoding = 0; /* PG_SQL_ASCII */
1821 AH->public.std_strings = false;
1823 /* sql error handling */
1824 AH->public.exit_on_error = true;
1825 AH->public.n_errors = 0;
1827 AH->createDate = time(NULL);
1829 AH->intSize = sizeof(int);
1830 AH->offSize = sizeof(pgoff_t);
1833 AH->fSpec = strdup(FileSpec);
1836 * Not used; maybe later....
1838 * AH->workDir = strdup(FileSpec); for(i=strlen(FileSpec) ; i > 0 ;
1839 * i--) if (AH->workDir[i-1] == '/')
1845 AH->currUser = NULL; /* unknown */
1846 AH->currSchema = NULL; /* ditto */
1847 AH->currTablespace = NULL; /* ditto */
1848 AH->currWithOids = -1; /* force SET */
1850 AH->toc = (TocEntry *) calloc(1, sizeof(TocEntry));
1852 die_horribly(AH, modulename, "out of memory\n");
1854 AH->toc->next = AH->toc;
1855 AH->toc->prev = AH->toc;
1858 AH->compression = compression;
1860 AH->pgCopyBuf = createPQExpBuffer();
1861 AH->sqlBuf = createPQExpBuffer();
1863 /* Open stdout with no compression for AH output handle */
1868 * On Windows, we need to use binary mode to read/write non-text archive
1869 * formats. Force stdin/stdout into binary mode if that is what we are
1873 if (fmt != archNull &&
1874 (AH->fSpec == NULL || strcmp(AH->fSpec, "") == 0))
1876 if (mode == archModeWrite)
1877 setmode(fileno(stdout), O_BINARY);
1879 setmode(fileno(stdin), O_BINARY);
1883 if (fmt == archUnknown)
1884 AH->format = _discoverArchiveFormat(AH);
1891 InitArchiveFmt_Custom(AH);
1895 InitArchiveFmt_Files(AH);
1899 InitArchiveFmt_Null(AH);
1903 InitArchiveFmt_Tar(AH);
1907 die_horribly(AH, modulename, "unrecognized file format \"%d\"\n", fmt);
1915 WriteDataChunks(ArchiveHandle *AH)
1918 StartDataPtr startPtr;
1921 for (te = AH->toc->next; te != AH->toc; te = te->next)
1923 if (te->dataDumper != NULL)
1926 /* printf("Writing data for %d (%x)\n", te->id, te); */
1928 if (strcmp(te->desc, "BLOBS") == 0)
1930 startPtr = AH->StartBlobsPtr;
1931 endPtr = AH->EndBlobsPtr;
1935 startPtr = AH->StartDataPtr;
1936 endPtr = AH->EndDataPtr;
1939 if (startPtr != NULL)
1940 (*startPtr) (AH, te);
1943 * printf("Dumper arg for %d is %x\n", te->id, te->dataDumperArg);
1947 * The user-provided DataDumper routine needs to call
1950 (*te->dataDumper) ((Archive *) AH, te->dataDumperArg);
1960 WriteToc(ArchiveHandle *AH)
1966 /* printf("%d TOC Entries to save\n", AH->tocCount); */
1968 WriteInt(AH, AH->tocCount);
1970 for (te = AH->toc->next; te != AH->toc; te = te->next)
1972 WriteInt(AH, te->dumpId);
1973 WriteInt(AH, te->dataDumper ? 1 : 0);
1975 /* OID is recorded as a string for historical reasons */
1976 sprintf(workbuf, "%u", te->catalogId.tableoid);
1977 WriteStr(AH, workbuf);
1978 sprintf(workbuf, "%u", te->catalogId.oid);
1979 WriteStr(AH, workbuf);
1981 WriteStr(AH, te->tag);
1982 WriteStr(AH, te->desc);
1983 WriteInt(AH, te->section);
1984 WriteStr(AH, te->defn);
1985 WriteStr(AH, te->dropStmt);
1986 WriteStr(AH, te->copyStmt);
1987 WriteStr(AH, te->namespace);
1988 WriteStr(AH, te->tablespace);
1989 WriteStr(AH, te->owner);
1990 WriteStr(AH, te->withOids ? "true" : "false");
1992 /* Dump list of dependencies */
1993 for (i = 0; i < te->nDeps; i++)
1995 sprintf(workbuf, "%d", te->dependencies[i]);
1996 WriteStr(AH, workbuf);
1998 WriteStr(AH, NULL); /* Terminate List */
2000 if (AH->WriteExtraTocPtr)
2001 (*AH->WriteExtraTocPtr) (AH, te);
2006 ReadToc(ArchiveHandle *AH)
2015 AH->tocCount = ReadInt(AH);
2018 for (i = 0; i < AH->tocCount; i++)
2020 te = (TocEntry *) calloc(1, sizeof(TocEntry));
2021 te->dumpId = ReadInt(AH);
2023 if (te->dumpId > AH->maxDumpId)
2024 AH->maxDumpId = te->dumpId;
2027 if (te->dumpId <= 0)
2028 die_horribly(AH, modulename,
2029 "entry ID %d out of range -- perhaps a corrupt TOC\n",
2032 te->hadDumper = ReadInt(AH);
2034 if (AH->version >= K_VERS_1_8)
2037 sscanf(tmp, "%u", &te->catalogId.tableoid);
2041 te->catalogId.tableoid = InvalidOid;
2043 sscanf(tmp, "%u", &te->catalogId.oid);
2046 te->tag = ReadStr(AH);
2047 te->desc = ReadStr(AH);
2049 if (AH->version >= K_VERS_1_11)
2051 te->section = ReadInt(AH);
2056 * rules for pre-8.4 archives wherein pg_dump hasn't classified
2057 * the entries into sections
2059 if (strcmp(te->desc, "COMMENT") == 0 ||
2060 strcmp(te->desc, "ACL") == 0)
2061 te->section = SECTION_NONE;
2062 else if (strcmp(te->desc, "TABLE DATA") == 0 ||
2063 strcmp(te->desc, "BLOBS") == 0 ||
2064 strcmp(te->desc, "BLOB COMMENTS") == 0)
2065 te->section = SECTION_DATA;
2066 else if (strcmp(te->desc, "CONSTRAINT") == 0 ||
2067 strcmp(te->desc, "CHECK CONSTRAINT") == 0 ||
2068 strcmp(te->desc, "FK CONSTRAINT") == 0 ||
2069 strcmp(te->desc, "INDEX") == 0 ||
2070 strcmp(te->desc, "RULE") == 0 ||
2071 strcmp(te->desc, "TRIGGER") == 0)
2072 te->section = SECTION_POST_DATA;
2074 te->section = SECTION_PRE_DATA;
2077 te->defn = ReadStr(AH);
2078 te->dropStmt = ReadStr(AH);
2080 if (AH->version >= K_VERS_1_3)
2081 te->copyStmt = ReadStr(AH);
2083 if (AH->version >= K_VERS_1_6)
2084 te->namespace = ReadStr(AH);
2086 if (AH->version >= K_VERS_1_10)
2087 te->tablespace = ReadStr(AH);
2089 te->owner = ReadStr(AH);
2090 if (AH->version >= K_VERS_1_9)
2092 if (strcmp(ReadStr(AH), "true") == 0)
2093 te->withOids = true;
2095 te->withOids = false;
2098 te->withOids = true;
2100 /* Read TOC entry dependencies */
2101 if (AH->version >= K_VERS_1_5)
2104 deps = (DumpId *) malloc(sizeof(DumpId) * depSize);
2110 break; /* end of list */
2111 if (depIdx >= depSize)
2114 deps = (DumpId *) realloc(deps, sizeof(DumpId) * depSize);
2116 sscanf(tmp, "%d", &deps[depIdx]);
2121 if (depIdx > 0) /* We have a non-null entry */
2123 deps = (DumpId *) realloc(deps, sizeof(DumpId) * depIdx);
2124 te->dependencies = deps;
2130 te->dependencies = NULL;
2136 te->dependencies = NULL;
2140 if (AH->ReadExtraTocPtr)
2141 (*AH->ReadExtraTocPtr) (AH, te);
2143 ahlog(AH, 3, "read TOC entry %d (ID %d) for %s %s\n",
2144 i, te->dumpId, te->desc, te->tag);
2146 /* link completed entry into TOC circular list */
2147 te->prev = AH->toc->prev;
2148 AH->toc->prev->next = te;
2152 /* special processing immediately upon read for some items */
2153 if (strcmp(te->desc, "ENCODING") == 0)
2154 processEncodingEntry(AH, te);
2155 else if (strcmp(te->desc, "STDSTRINGS") == 0)
2156 processStdStringsEntry(AH, te);
2161 processEncodingEntry(ArchiveHandle *AH, TocEntry *te)
2163 /* te->defn should have the form SET client_encoding = 'foo'; */
2164 char *defn = strdup(te->defn);
2169 ptr1 = strchr(defn, '\'');
2171 ptr2 = strchr(++ptr1, '\'');
2175 encoding = pg_char_to_encoding(ptr1);
2177 die_horribly(AH, modulename, "unrecognized encoding \"%s\"\n",
2179 AH->public.encoding = encoding;
2182 die_horribly(AH, modulename, "invalid ENCODING item: %s\n",
2189 processStdStringsEntry(ArchiveHandle *AH, TocEntry *te)
2191 /* te->defn should have the form SET standard_conforming_strings = 'x'; */
2194 ptr1 = strchr(te->defn, '\'');
2195 if (ptr1 && strncmp(ptr1, "'on'", 4) == 0)
2196 AH->public.std_strings = true;
2197 else if (ptr1 && strncmp(ptr1, "'off'", 5) == 0)
2198 AH->public.std_strings = false;
2200 die_horribly(AH, modulename, "invalid STDSTRINGS item: %s\n",
2205 _tocEntryRequired(TocEntry *te, RestoreOptions *ropt, bool include_acls)
2207 teReqs res = REQ_ALL;
2209 /* ENCODING and STDSTRINGS items are dumped specially, so always reject */
2210 if (strcmp(te->desc, "ENCODING") == 0 ||
2211 strcmp(te->desc, "STDSTRINGS") == 0)
2214 /* If it's an ACL, maybe ignore it */
2215 if ((!include_acls || ropt->aclsSkip) && strcmp(te->desc, "ACL") == 0)
2218 if (!ropt->create && strcmp(te->desc, "DATABASE") == 0)
2221 /* Check options for selective dump/restore */
2222 if (ropt->schemaNames)
2224 /* If no namespace is specified, it means all. */
2227 if (strcmp(ropt->schemaNames, te->namespace) != 0)
2233 if (strcmp(te->desc, "TABLE") == 0 ||
2234 strcmp(te->desc, "TABLE DATA") == 0)
2236 if (!ropt->selTable)
2238 if (ropt->tableNames && strcmp(ropt->tableNames, te->tag) != 0)
2241 else if (strcmp(te->desc, "INDEX") == 0)
2243 if (!ropt->selIndex)
2245 if (ropt->indexNames && strcmp(ropt->indexNames, te->tag) != 0)
2248 else if (strcmp(te->desc, "FUNCTION") == 0)
2250 if (!ropt->selFunction)
2252 if (ropt->functionNames && strcmp(ropt->functionNames, te->tag) != 0)
2255 else if (strcmp(te->desc, "TRIGGER") == 0)
2257 if (!ropt->selTrigger)
2259 if (ropt->triggerNames && strcmp(ropt->triggerNames, te->tag) != 0)
2267 * Check if we had a dataDumper. Indicates if the entry is schema or data
2272 * Special Case: If 'SEQUENCE SET' then it is considered a data entry
2274 if (strcmp(te->desc, "SEQUENCE SET") == 0)
2275 res = res & REQ_DATA;
2277 res = res & ~REQ_DATA;
2281 * Special case: <Init> type with <Max OID> tag; this is obsolete and we
2284 if ((strcmp(te->desc, "<Init>") == 0) && (strcmp(te->tag, "Max OID") == 0))
2287 /* Mask it if we only want schema */
2288 if (ropt->schemaOnly)
2289 res = res & REQ_SCHEMA;
2291 /* Mask it we only want data */
2293 res = res & REQ_DATA;
2295 /* Mask it if we don't have a schema contribution */
2296 if (!te->defn || strlen(te->defn) == 0)
2297 res = res & ~REQ_SCHEMA;
2299 /* Finally, if there's a per-ID filter, limit based on that as well */
2300 if (ropt->idWanted && !ropt->idWanted[te->dumpId - 1])
2307 * Issue SET commands for parameters that we want to have set the same way
2308 * at all times during execution of a restore script.
2311 _doSetFixedOutputState(ArchiveHandle *AH)
2313 /* Disable statement_timeout in archive for pg_restore/psql */
2314 ahprintf(AH, "SET statement_timeout = 0;\n");
2316 /* Select the correct character set encoding */
2317 ahprintf(AH, "SET client_encoding = '%s';\n",
2318 pg_encoding_to_char(AH->public.encoding));
2320 /* Select the correct string literal syntax */
2321 ahprintf(AH, "SET standard_conforming_strings = %s;\n",
2322 AH->public.std_strings ? "on" : "off");
2324 /* Select the role to be used during restore */
2325 if (AH->ropt && AH->ropt->use_role)
2326 ahprintf(AH, "SET ROLE %s;\n", fmtId(AH->ropt->use_role));
2328 /* Make sure function checking is disabled */
2329 ahprintf(AH, "SET check_function_bodies = false;\n");
2331 /* Avoid annoying notices etc */
2332 ahprintf(AH, "SET client_min_messages = warning;\n");
2333 if (!AH->public.std_strings)
2334 ahprintf(AH, "SET escape_string_warning = off;\n");
2340 * Issue a SET SESSION AUTHORIZATION command. Caller is responsible
2341 * for updating state if appropriate. If user is NULL or an empty string,
2342 * the specification DEFAULT will be used.
2345 _doSetSessionAuth(ArchiveHandle *AH, const char *user)
2347 PQExpBuffer cmd = createPQExpBuffer();
2349 appendPQExpBuffer(cmd, "SET SESSION AUTHORIZATION ");
2352 * SQL requires a string literal here. Might as well be correct.
2355 appendStringLiteralAHX(cmd, user, AH);
2357 appendPQExpBuffer(cmd, "DEFAULT");
2358 appendPQExpBuffer(cmd, ";");
2360 if (RestoringToDB(AH))
2364 res = PQexec(AH->connection, cmd->data);
2366 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2367 /* NOT warn_or_die_horribly... use -O instead to skip this. */
2368 die_horribly(AH, modulename, "could not set session user to \"%s\": %s",
2369 user, PQerrorMessage(AH->connection));
2374 ahprintf(AH, "%s\n\n", cmd->data);
2376 destroyPQExpBuffer(cmd);
2381 * Issue a SET default_with_oids command. Caller is responsible
2382 * for updating state if appropriate.
2385 _doSetWithOids(ArchiveHandle *AH, const bool withOids)
2387 PQExpBuffer cmd = createPQExpBuffer();
2389 appendPQExpBuffer(cmd, "SET default_with_oids = %s;", withOids ?
2392 if (RestoringToDB(AH))
2396 res = PQexec(AH->connection, cmd->data);
2398 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2399 warn_or_die_horribly(AH, modulename,
2400 "could not set default_with_oids: %s",
2401 PQerrorMessage(AH->connection));
2406 ahprintf(AH, "%s\n\n", cmd->data);
2408 destroyPQExpBuffer(cmd);
2413 * Issue the commands to connect to the specified database.
2415 * If we're currently restoring right into a database, this will
2416 * actually establish a connection. Otherwise it puts a \connect into
2417 * the script output.
2419 * NULL dbname implies reconnecting to the current DB (pretty useless).
2422 _reconnectToDB(ArchiveHandle *AH, const char *dbname)
2424 if (RestoringToDB(AH))
2425 ReconnectToServer(AH, dbname, NULL);
2428 PQExpBuffer qry = createPQExpBuffer();
2430 appendPQExpBuffer(qry, "\\connect %s\n\n",
2431 dbname ? fmtId(dbname) : "-");
2432 ahprintf(AH, "%s", qry->data);
2433 destroyPQExpBuffer(qry);
2437 * NOTE: currUser keeps track of what the imaginary session user in our
2438 * script is. It's now effectively reset to the original userID.
2442 AH->currUser = NULL;
2444 /* don't assume we still know the output schema, tablespace, etc either */
2446 free(AH->currSchema);
2447 AH->currSchema = NULL;
2448 if (AH->currTablespace)
2449 free(AH->currTablespace);
2450 AH->currTablespace = NULL;
2451 AH->currWithOids = -1;
2453 /* re-establish fixed state */
2454 _doSetFixedOutputState(AH);
2458 * Become the specified user, and update state to avoid redundant commands
2460 * NULL or empty argument is taken to mean restoring the session default
2463 _becomeUser(ArchiveHandle *AH, const char *user)
2466 user = ""; /* avoid null pointers */
2468 if (AH->currUser && strcmp(AH->currUser, user) == 0)
2469 return; /* no need to do anything */
2471 _doSetSessionAuth(AH, user);
2474 * NOTE: currUser keeps track of what the imaginary session user in our
2479 AH->currUser = strdup(user);
2483 * Become the owner of the the given TOC entry object. If
2484 * changes in ownership are not allowed, this doesn't do anything.
2487 _becomeOwner(ArchiveHandle *AH, TocEntry *te)
2489 if (AH->ropt && (AH->ropt->noOwner || !AH->ropt->use_setsessauth))
2492 _becomeUser(AH, te->owner);
2497 * Set the proper default_with_oids value for the table.
2500 _setWithOids(ArchiveHandle *AH, TocEntry *te)
2502 if (AH->currWithOids != te->withOids)
2504 _doSetWithOids(AH, te->withOids);
2505 AH->currWithOids = te->withOids;
2511 * Issue the commands to select the specified schema as the current schema
2512 * in the target database.
2515 _selectOutputSchema(ArchiveHandle *AH, const char *schemaName)
2519 if (!schemaName || *schemaName == '\0' ||
2520 (AH->currSchema && strcmp(AH->currSchema, schemaName) == 0))
2521 return; /* no need to do anything */
2523 qry = createPQExpBuffer();
2525 appendPQExpBuffer(qry, "SET search_path = %s",
2527 if (strcmp(schemaName, "pg_catalog") != 0)
2528 appendPQExpBuffer(qry, ", pg_catalog");
2530 if (RestoringToDB(AH))
2534 res = PQexec(AH->connection, qry->data);
2536 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2537 warn_or_die_horribly(AH, modulename,
2538 "could not set search_path to \"%s\": %s",
2539 schemaName, PQerrorMessage(AH->connection));
2544 ahprintf(AH, "%s;\n\n", qry->data);
2547 free(AH->currSchema);
2548 AH->currSchema = strdup(schemaName);
2550 destroyPQExpBuffer(qry);
2554 * Issue the commands to select the specified tablespace as the current one
2555 * in the target database.
2558 _selectTablespace(ArchiveHandle *AH, const char *tablespace)
2564 /* do nothing in --no-tablespaces mode */
2565 if (AH->ropt->noTablespace)
2568 have = AH->currTablespace;
2571 /* no need to do anything for non-tablespace object */
2575 if (have && strcmp(want, have) == 0)
2576 return; /* no need to do anything */
2578 qry = createPQExpBuffer();
2580 if (strcmp(want, "") == 0)
2582 /* We want the tablespace to be the database's default */
2583 appendPQExpBuffer(qry, "SET default_tablespace = ''");
2587 /* We want an explicit tablespace */
2588 appendPQExpBuffer(qry, "SET default_tablespace = %s", fmtId(want));
2591 if (RestoringToDB(AH))
2595 res = PQexec(AH->connection, qry->data);
2597 if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
2598 warn_or_die_horribly(AH, modulename,
2599 "could not set default_tablespace to %s: %s",
2600 fmtId(want), PQerrorMessage(AH->connection));
2605 ahprintf(AH, "%s;\n\n", qry->data);
2607 if (AH->currTablespace)
2608 free(AH->currTablespace);
2609 AH->currTablespace = strdup(want);
2611 destroyPQExpBuffer(qry);
2615 * Extract an object description for a TOC entry, and append it to buf.
2617 * This is not quite as general as it may seem, since it really only
2618 * handles constructing the right thing to put into ALTER ... OWNER TO.
2620 * The whole thing is pretty grotty, but we are kind of stuck since the
2621 * information used is all that's available in older dump files.
2624 _getObjectDescription(PQExpBuffer buf, TocEntry *te, ArchiveHandle *AH)
2626 const char *type = te->desc;
2628 /* Use ALTER TABLE for views and sequences */
2629 if (strcmp(type, "VIEW") == 0 || strcmp(type, "SEQUENCE") == 0)
2632 /* objects named by a schema and name */
2633 if (strcmp(type, "CONVERSION") == 0 ||
2634 strcmp(type, "DOMAIN") == 0 ||
2635 strcmp(type, "TABLE") == 0 ||
2636 strcmp(type, "TYPE") == 0 ||
2637 strcmp(type, "TEXT SEARCH DICTIONARY") == 0 ||
2638 strcmp(type, "TEXT SEARCH CONFIGURATION") == 0)
2640 appendPQExpBuffer(buf, "%s ", type);
2641 if (te->namespace && te->namespace[0]) /* is null pre-7.3 */
2642 appendPQExpBuffer(buf, "%s.", fmtId(te->namespace));
2645 * Pre-7.3 pg_dump would sometimes (not always) put a fmtId'd name
2646 * into te->tag for an index. This check is heuristic, so make its
2647 * scope as narrow as possible.
2649 if (AH->version < K_VERS_1_7 &&
2650 te->tag[0] == '"' &&
2651 te->tag[strlen(te->tag) - 1] == '"' &&
2652 strcmp(type, "INDEX") == 0)
2653 appendPQExpBuffer(buf, "%s", te->tag);
2655 appendPQExpBuffer(buf, "%s", fmtId(te->tag));
2659 /* objects named by just a name */
2660 if (strcmp(type, "DATABASE") == 0 ||
2661 strcmp(type, "PROCEDURAL LANGUAGE") == 0 ||
2662 strcmp(type, "SCHEMA") == 0 ||
2663 strcmp(type, "FOREIGN DATA WRAPPER") == 0 ||
2664 strcmp(type, "SERVER") == 0 ||
2665 strcmp(type, "USER MAPPING") == 0)
2667 appendPQExpBuffer(buf, "%s %s", type, fmtId(te->tag));
2672 * These object types require additional decoration. Fortunately, the
2673 * information needed is exactly what's in the DROP command.
2675 if (strcmp(type, "AGGREGATE") == 0 ||
2676 strcmp(type, "FUNCTION") == 0 ||
2677 strcmp(type, "OPERATOR") == 0 ||
2678 strcmp(type, "OPERATOR CLASS") == 0 ||
2679 strcmp(type, "OPERATOR FAMILY") == 0)
2681 /* Chop "DROP " off the front and make a modifiable copy */
2682 char *first = strdup(te->dropStmt + 5);
2685 /* point to last character in string */
2686 last = first + strlen(first) - 1;
2688 /* Strip off any ';' or '\n' at the end */
2689 while (last >= first && (*last == '\n' || *last == ';'))
2693 appendPQExpBufferStr(buf, first);
2699 write_msg(modulename, "WARNING: don't know how to set owner for object type %s\n",
2704 _printTocEntry(ArchiveHandle *AH, TocEntry *te, RestoreOptions *ropt, bool isData, bool acl_pass)
2706 /* ACLs are dumped only during acl pass */
2709 if (strcmp(te->desc, "ACL") != 0)
2714 if (strcmp(te->desc, "ACL") == 0)
2719 * Avoid dumping the public schema, as it will already be created ...
2720 * unless we are using --clean mode, in which case it's been deleted and
2721 * we'd better recreate it. Likewise for its comment, if any.
2723 if (!ropt->dropSchema)
2725 if (strcmp(te->desc, "SCHEMA") == 0 &&
2726 strcmp(te->tag, "public") == 0)
2728 /* The comment restore would require super-user privs, so avoid it. */
2729 if (strcmp(te->desc, "COMMENT") == 0 &&
2730 strcmp(te->tag, "SCHEMA public") == 0)
2734 /* Select owner, schema, and tablespace as necessary */
2735 _becomeOwner(AH, te);
2736 _selectOutputSchema(AH, te->namespace);
2737 _selectTablespace(AH, te->tablespace);
2739 /* Set up OID mode too */
2740 if (strcmp(te->desc, "TABLE") == 0)
2741 _setWithOids(AH, te);
2743 /* Emit header comment for item */
2744 if (!AH->noTocComments)
2753 ahprintf(AH, "--\n");
2754 if (AH->public.verbose)
2756 ahprintf(AH, "-- TOC entry %d (class %u OID %u)\n",
2757 te->dumpId, te->catalogId.tableoid, te->catalogId.oid);
2762 ahprintf(AH, "-- Dependencies:");
2763 for (i = 0; i < te->nDeps; i++)
2764 ahprintf(AH, " %d", te->dependencies[i]);
2768 ahprintf(AH, "-- %sName: %s; Type: %s; Schema: %s; Owner: %s",
2769 pfx, te->tag, te->desc,
2770 te->namespace ? te->namespace : "-",
2771 ropt->noOwner ? "-" : te->owner);
2772 if (te->tablespace && !ropt->noTablespace)
2773 ahprintf(AH, "; Tablespace: %s", te->tablespace);
2776 if (AH->PrintExtraTocPtr !=NULL)
2777 (*AH->PrintExtraTocPtr) (AH, te);
2778 ahprintf(AH, "--\n\n");
2782 * Actually print the definition.
2784 * Really crude hack for suppressing AUTHORIZATION clause that old pg_dump
2785 * versions put into CREATE SCHEMA. We have to do this when --no-owner
2786 * mode is selected. This is ugly, but I see no other good way ...
2788 if (ropt->noOwner && strcmp(te->desc, "SCHEMA") == 0)
2790 ahprintf(AH, "CREATE SCHEMA %s;\n\n\n", fmtId(te->tag));
2794 if (strlen(te->defn) > 0)
2795 ahprintf(AH, "%s\n\n", te->defn);
2799 * If we aren't using SET SESSION AUTH to determine ownership, we must
2800 * instead issue an ALTER OWNER command. We assume that anything without
2801 * a DROP command is not a separately ownable object. All the categories
2802 * with DROP commands must appear in one list or the other.
2804 if (!ropt->noOwner && !ropt->use_setsessauth &&
2805 strlen(te->owner) > 0 && strlen(te->dropStmt) > 0)
2807 if (strcmp(te->desc, "AGGREGATE") == 0 ||
2808 strcmp(te->desc, "CONVERSION") == 0 ||
2809 strcmp(te->desc, "DATABASE") == 0 ||
2810 strcmp(te->desc, "DOMAIN") == 0 ||
2811 strcmp(te->desc, "FUNCTION") == 0 ||
2812 strcmp(te->desc, "OPERATOR") == 0 ||
2813 strcmp(te->desc, "OPERATOR CLASS") == 0 ||
2814 strcmp(te->desc, "OPERATOR FAMILY") == 0 ||
2815 strcmp(te->desc, "PROCEDURAL LANGUAGE") == 0 ||
2816 strcmp(te->desc, "SCHEMA") == 0 ||
2817 strcmp(te->desc, "TABLE") == 0 ||
2818 strcmp(te->desc, "TYPE") == 0 ||
2819 strcmp(te->desc, "VIEW") == 0 ||
2820 strcmp(te->desc, "SEQUENCE") == 0 ||
2821 strcmp(te->desc, "TEXT SEARCH DICTIONARY") == 0 ||
2822 strcmp(te->desc, "TEXT SEARCH CONFIGURATION") == 0 ||
2823 strcmp(te->desc, "FOREIGN DATA WRAPPER") == 0 ||
2824 strcmp(te->desc, "SERVER") == 0)
2826 PQExpBuffer temp = createPQExpBuffer();
2828 appendPQExpBuffer(temp, "ALTER ");
2829 _getObjectDescription(temp, te, AH);
2830 appendPQExpBuffer(temp, " OWNER TO %s;", fmtId(te->owner));
2831 ahprintf(AH, "%s\n\n", temp->data);
2832 destroyPQExpBuffer(temp);
2834 else if (strcmp(te->desc, "CAST") == 0 ||
2835 strcmp(te->desc, "CHECK CONSTRAINT") == 0 ||
2836 strcmp(te->desc, "CONSTRAINT") == 0 ||
2837 strcmp(te->desc, "DEFAULT") == 0 ||
2838 strcmp(te->desc, "FK CONSTRAINT") == 0 ||
2839 strcmp(te->desc, "INDEX") == 0 ||
2840 strcmp(te->desc, "RULE") == 0 ||
2841 strcmp(te->desc, "TRIGGER") == 0 ||
2842 strcmp(te->desc, "USER MAPPING") == 0)
2844 /* these object types don't have separate owners */
2848 write_msg(modulename, "WARNING: don't know how to set owner for object type %s\n",
2854 * If it's an ACL entry, it might contain SET SESSION AUTHORIZATION
2855 * commands, so we can no longer assume we know the current auth setting.
2857 if (strncmp(te->desc, "ACL", 3) == 0)
2861 AH->currUser = NULL;
2866 WriteHead(ArchiveHandle *AH)
2870 (*AH->WriteBufPtr) (AH, "PGDMP", 5); /* Magic code */
2871 (*AH->WriteBytePtr) (AH, AH->vmaj);
2872 (*AH->WriteBytePtr) (AH, AH->vmin);
2873 (*AH->WriteBytePtr) (AH, AH->vrev);
2874 (*AH->WriteBytePtr) (AH, AH->intSize);
2875 (*AH->WriteBytePtr) (AH, AH->offSize);
2876 (*AH->WriteBytePtr) (AH, AH->format);
2879 if (AH->compression != 0)
2880 write_msg(modulename, "WARNING: requested compression not available in this "
2881 "installation -- archive will be uncompressed\n");
2883 AH->compression = 0;
2886 WriteInt(AH, AH->compression);
2888 crtm = *localtime(&AH->createDate);
2889 WriteInt(AH, crtm.tm_sec);
2890 WriteInt(AH, crtm.tm_min);
2891 WriteInt(AH, crtm.tm_hour);
2892 WriteInt(AH, crtm.tm_mday);
2893 WriteInt(AH, crtm.tm_mon);
2894 WriteInt(AH, crtm.tm_year);
2895 WriteInt(AH, crtm.tm_isdst);
2896 WriteStr(AH, PQdb(AH->connection));
2897 WriteStr(AH, AH->public.remoteVersionStr);
2898 WriteStr(AH, PG_VERSION);
2902 ReadHead(ArchiveHandle *AH)
2908 /* If we haven't already read the header... */
2909 if (!AH->readHeader)
2911 if ((*AH->ReadBufPtr) (AH, tmpMag, 5) != 5)
2912 die_horribly(AH, modulename, "unexpected end of file\n");
2914 if (strncmp(tmpMag, "PGDMP", 5) != 0)
2915 die_horribly(AH, modulename, "did not find magic string in file header\n");
2917 AH->vmaj = (*AH->ReadBytePtr) (AH);
2918 AH->vmin = (*AH->ReadBytePtr) (AH);
2920 if (AH->vmaj > 1 || ((AH->vmaj == 1) && (AH->vmin > 0))) /* Version > 1.0 */
2921 AH->vrev = (*AH->ReadBytePtr) (AH);
2925 AH->version = ((AH->vmaj * 256 + AH->vmin) * 256 + AH->vrev) * 256 + 0;
2928 if (AH->version < K_VERS_1_0 || AH->version > K_VERS_MAX)
2929 die_horribly(AH, modulename, "unsupported version (%d.%d) in file header\n",
2930 AH->vmaj, AH->vmin);
2932 AH->intSize = (*AH->ReadBytePtr) (AH);
2933 if (AH->intSize > 32)
2934 die_horribly(AH, modulename, "sanity check on integer size (%lu) failed\n",
2935 (unsigned long) AH->intSize);
2937 if (AH->intSize > sizeof(int))
2938 write_msg(modulename, "WARNING: archive was made on a machine with larger integers, some operations might fail\n");
2940 if (AH->version >= K_VERS_1_7)
2941 AH->offSize = (*AH->ReadBytePtr) (AH);
2943 AH->offSize = AH->intSize;
2945 fmt = (*AH->ReadBytePtr) (AH);
2947 if (AH->format != fmt)
2948 die_horribly(AH, modulename, "expected format (%d) differs from format found in file (%d)\n",
2952 if (AH->version >= K_VERS_1_2)
2954 if (AH->version < K_VERS_1_4)
2955 AH->compression = (*AH->ReadBytePtr) (AH);
2957 AH->compression = ReadInt(AH);
2960 AH->compression = Z_DEFAULT_COMPRESSION;
2963 if (AH->compression != 0)
2964 write_msg(modulename, "WARNING: archive is compressed, but this installation does not support compression -- no data will be available\n");
2967 if (AH->version >= K_VERS_1_4)
2969 crtm.tm_sec = ReadInt(AH);
2970 crtm.tm_min = ReadInt(AH);
2971 crtm.tm_hour = ReadInt(AH);
2972 crtm.tm_mday = ReadInt(AH);
2973 crtm.tm_mon = ReadInt(AH);
2974 crtm.tm_year = ReadInt(AH);
2975 crtm.tm_isdst = ReadInt(AH);
2977 AH->archdbname = ReadStr(AH);
2979 AH->createDate = mktime(&crtm);
2981 if (AH->createDate == (time_t) -1)
2982 write_msg(modulename, "WARNING: invalid creation date in header\n");
2985 if (AH->version >= K_VERS_1_10)
2987 AH->archiveRemoteVersion = ReadStr(AH);
2988 AH->archiveDumpVersion = ReadStr(AH);
2996 * check to see if fseek can be performed.
3001 if (fseeko(fp, 0, SEEK_CUR) != 0)
3003 else if (sizeof(pgoff_t) > sizeof(long))
3006 * At this point, pgoff_t is too large for long, so we return based on
3007 * whether an pgoff_t version of fseek is available.
3024 dumpTimestamp(ArchiveHandle *AH, const char *msg, time_t tim)
3029 * We don't print the timezone on Win32, because the names are long and
3030 * localized, which means they may contain characters in various random
3031 * encodings; this has been seen to cause encoding errors when reading the
3034 if (strftime(buf, sizeof(buf),
3036 "%Y-%m-%d %H:%M:%S %Z",
3038 "%Y-%m-%d %H:%M:%S",
3040 localtime(&tim)) != 0)
3041 ahprintf(AH, "-- %s %s\n\n", msg, buf);
3046 * Main engine for parallel restore.
3048 * Work is done in three phases.
3049 * First we process tocEntries until we come to one that is marked
3050 * SECTION_DATA or SECTION_POST_DATA, in a single connection, just as for a
3051 * standard restore. Second we process the remaining non-ACL steps in
3052 * parallel worker children (threads on Windows, processes on Unix), each of
3053 * which connects separately to the database. Finally we process all the ACL
3054 * entries in a single connection (that happens back in RestoreArchive).
3057 restore_toc_entries_parallel(ArchiveHandle *AH)
3059 RestoreOptions *ropt = AH->ropt;
3060 int n_slots = ropt->number_of_threads;
3061 ParallelSlot *slots;
3064 TocEntry *first_unprocessed = AH->toc->next;
3065 TocEntry *next_work_item;
3069 ahlog(AH,2,"entering restore_toc_entries_parallel\n");
3071 /* we haven't got round to making this work for all archive formats */
3072 if (AH->ClonePtr == NULL || AH->ReopenPtr == NULL)
3073 die_horribly(AH, modulename, "parallel restore is not supported with this archive file format\n");
3075 slots = (ParallelSlot *) calloc(sizeof(ParallelSlot), n_slots);
3077 /* Adjust dependency information */
3078 fix_dependencies(AH);
3081 * Do all the early stuff in a single connection in the parent.
3082 * There's no great point in running it in parallel, in fact it will
3083 * actually run faster in a single connection because we avoid all the
3084 * connection and setup overhead.
3086 while ((next_work_item = get_next_work_item(AH, &first_unprocessed,
3089 if (next_work_item->section == SECTION_DATA ||
3090 next_work_item->section == SECTION_POST_DATA)
3093 ahlog(AH, 1, "processing item %d %s %s\n",
3094 next_work_item->dumpId,
3095 next_work_item->desc, next_work_item->tag);
3097 (void) restore_toc_entry(AH, next_work_item, ropt, false);
3099 next_work_item->restored = true;
3100 reduce_dependencies(AH, next_work_item);
3104 * Now close parent connection in prep for parallel steps. We do this
3105 * mainly to ensure that we don't exceed the specified number of parallel
3108 PQfinish(AH->connection);
3109 AH->connection = NULL;
3111 /* blow away any transient state from the old connection */
3114 AH->currUser = NULL;
3116 free(AH->currSchema);
3117 AH->currSchema = NULL;
3118 if (AH->currTablespace)
3119 free(AH->currTablespace);
3120 AH->currTablespace = NULL;
3121 AH->currWithOids = -1;
3126 * Keep going until there is no worker still running AND there is no work
3130 ahlog(AH,1,"entering main parallel loop\n");
3132 while ((next_work_item = get_next_work_item(AH, &first_unprocessed,
3133 slots, n_slots)) != NULL ||
3134 work_in_progress(slots, n_slots))
3136 if (next_work_item != NULL)
3140 /* If not to be dumped, don't waste time launching a worker */
3141 reqs = _tocEntryRequired(next_work_item, AH->ropt, false);
3142 if ((reqs & (REQ_SCHEMA | REQ_DATA)) == 0)
3144 ahlog(AH, 1, "skipping item %d %s %s\n",
3145 next_work_item->dumpId,
3146 next_work_item->desc, next_work_item->tag);
3148 next_work_item->restored = true;
3149 reduce_dependencies(AH, next_work_item);
3154 if ((next_slot = get_next_slot(slots, n_slots)) != NO_SLOT)
3156 /* There is work still to do and a worker slot available */
3160 ahlog(AH, 1, "launching item %d %s %s\n",
3161 next_work_item->dumpId,
3162 next_work_item->desc, next_work_item->tag);
3164 next_work_item->restored = true;
3166 /* this memory is dealloced in mark_work_done() */
3167 args = malloc(sizeof(RestoreArgs));
3168 args->AH = CloneArchive(AH);
3169 args->te = next_work_item;
3171 /* run the step in a worker child */
3172 child = spawn_restore(args);
3174 slots[next_slot].child_id = child;
3175 slots[next_slot].args = args;
3182 * If we get here there must be work being done. Either there is no
3183 * work available to schedule (and work_in_progress returned true) or
3184 * there are no slots available. So we wait for a worker to finish,
3185 * and process the result.
3187 ret_child = reap_child(slots, n_slots, &work_status);
3189 if (WIFEXITED(work_status))
3191 mark_work_done(AH, ret_child, WEXITSTATUS(work_status),
3196 die_horribly(AH, modulename, "worker process crashed: status %d\n",
3201 ahlog(AH,1,"finished main parallel loop\n");
3204 * Now reconnect the single parent connection.
3206 ConnectDatabase((Archive *) AH, ropt->dbname,
3207 ropt->pghost, ropt->pgport, ropt->username,
3208 ropt->requirePassword);
3210 _doSetFixedOutputState(AH);
3213 * Make sure there is no non-ACL work left due to, say,
3214 * circular dependencies, or some other pathological condition.
3215 * If so, do it in the single parent connection.
3217 for (te = AH->toc->next; te != AH->toc; te = te->next)
3221 ahlog(AH, 1, "processing missed item %d %s %s\n",
3222 te->dumpId, te->desc, te->tag);
3223 (void) restore_toc_entry(AH, te, ropt, false);
3227 /* The ACLs will be handled back in RestoreArchive. */
3231 * create a worker child to perform a restore step in parallel
3234 spawn_restore(RestoreArgs *args)
3238 /* Ensure stdio state is quiesced before forking */
3245 /* in child process */
3246 parallel_restore(args);
3247 die_horribly(args->AH, modulename,
3248 "parallel_restore should not return\n");
3253 die_horribly(args->AH, modulename,
3254 "could not create worker process: %s\n",
3258 child = (HANDLE) _beginthreadex(NULL, 0, (void *) parallel_restore,
3261 die_horribly(args->AH, modulename,
3262 "could not create worker thread: %s\n",
3270 * collect status from a completed worker child
3273 reap_child(ParallelSlot *slots, int n_slots, int *work_status)
3276 /* Unix is so much easier ... */
3277 return wait(work_status);
3279 static HANDLE *handles = NULL;
3280 int hindex, snum, tnum;
3284 /* first time around only, make space for handles to listen on */
3285 if (handles == NULL)
3286 handles = (HANDLE *) calloc(sizeof(HANDLE),n_slots);
3288 /* set up list of handles to listen to */
3289 for (snum=0, tnum=0; snum < n_slots; snum++)
3290 if (slots[snum].child_id != 0)
3291 handles[tnum++] = slots[snum].child_id;
3293 /* wait for one to finish */
3294 hindex = WaitForMultipleObjects(tnum, handles, false, INFINITE);
3296 /* get handle of finished thread */
3297 ret_child = handles[hindex - WAIT_OBJECT_0];
3299 /* get the result */
3300 GetExitCodeThread(ret_child,&res);
3303 /* dispose of handle to stop leaks */
3304 CloseHandle(ret_child);
3311 * are we doing anything now?
3314 work_in_progress(ParallelSlot *slots, int n_slots)
3318 for (i = 0; i < n_slots; i++)
3320 if (slots[i].child_id != 0)
3327 * find the first free parallel slot (if any).
3330 get_next_slot(ParallelSlot *slots, int n_slots)
3334 for (i = 0; i < n_slots; i++)
3336 if (slots[i].child_id == 0)
3343 * Find the next work item (if any) that is capable of being run now.
3345 * To qualify, the item must have no remaining dependencies
3346 * and no requirement for locks that is incompatible with
3347 * items currently running.
3349 * first_unprocessed is state data that tracks the location of the first
3350 * TocEntry that's not marked 'restored'. This avoids O(N^2) search time
3351 * with long TOC lists. (Even though the constant is pretty small, it'd
3352 * get us eventually.)
3354 * pref_non_data is for an alternative selection algorithm that gives
3355 * preference to non-data items if there is already a data load running.
3356 * It is currently disabled.
3359 get_next_work_item(ArchiveHandle *AH, TocEntry **first_unprocessed,
3360 ParallelSlot *slots, int n_slots)
3362 bool pref_non_data = false; /* or get from AH->ropt */
3363 TocEntry *data_te = NULL;
3368 * Bogus heuristics for pref_non_data
3374 for (k=0; k < n_slots; k++)
3375 if (slots[k].args->te != NULL &&
3376 slots[k].args->te->section == SECTION_DATA)
3378 if (n_slots == 0 || count * 4 < n_slots)
3379 pref_non_data = false;
3383 * Advance first_unprocessed if possible.
3385 for (te = *first_unprocessed; te != AH->toc; te = te->next)
3390 *first_unprocessed = te;
3393 * Search from first_unprocessed until we find an available item.
3395 for (; te != AH->toc; te = te->next)
3397 bool conflicts = false;
3399 /* Ignore if already done or still waiting on dependencies */
3400 if (te->restored || te->depCount > 0)
3404 * Check to see if the item would need exclusive lock on something
3405 * that a currently running item also needs lock on. If so, we
3406 * don't want to schedule them together.
3408 for (i = 0; i < n_slots && !conflicts; i++)
3410 TocEntry *running_te;
3412 if (slots[i].args == NULL)
3414 running_te = slots[i].args->te;
3415 for (j = 0; j < te->nLockDeps && !conflicts; j++)
3417 for (k = 0; k < running_te->nLockDeps; k++)
3419 if (te->lockDeps[j] == running_te->lockDeps[k])
3431 if (pref_non_data && te->section == SECTION_DATA)
3433 if (data_te == NULL)
3438 /* passed all tests, so this item can run */
3442 if (data_te != NULL)
3445 ahlog(AH,2,"no item ready\n");
3451 * Restore a single TOC item in parallel with others
3453 * this is the procedure run as a thread (Windows) or a
3454 * separate process (everything else).
3456 static parallel_restore_result
3457 parallel_restore(RestoreArgs *args)
3459 ArchiveHandle *AH = args->AH;
3460 TocEntry *te = args->te;
3461 RestoreOptions *ropt = AH->ropt;
3465 * Close and reopen the input file so we have a private file pointer
3466 * that doesn't stomp on anyone else's file pointer.
3468 * Note: on Windows, since we are using threads not processes, this
3469 * *doesn't* close the original file pointer but just open a new one.
3471 (AH->ReopenPtr) (AH);
3474 * We need our own database connection, too
3476 ConnectDatabase((Archive *) AH, ropt->dbname,
3477 ropt->pghost, ropt->pgport, ropt->username,
3478 ropt->requirePassword);
3480 _doSetFixedOutputState(AH);
3482 /* Restore the TOC item */
3483 retval = restore_toc_entry(AH, te, ropt, true);
3486 PQfinish(AH->connection);
3487 AH->connection = NULL;
3489 (AH->ClosePtr) (AH);
3491 if (retval == 0 && AH->public.n_errors)
3492 retval = WORKER_IGNORED_ERRORS;
3503 * Housekeeping to be done after a step has been parallel restored.
3505 * Clear the appropriate slot, free all the extra memory we allocated,
3506 * update status, and reduce the dependency count of any dependent items.
3509 mark_work_done(ArchiveHandle *AH, thandle worker, int status,
3510 ParallelSlot *slots, int n_slots)
3512 TocEntry *te = NULL;
3515 for (i = 0; i < n_slots; i++)
3517 if (slots[i].child_id == worker)
3519 slots[i].child_id = 0;
3520 te = slots[i].args->te;
3521 DeCloneArchive(slots[i].args->AH);
3522 free(slots[i].args);
3523 slots[i].args = NULL;
3530 die_horribly(AH, modulename, "failed to find slot for finished worker\n");
3532 ahlog(AH, 1, "finished item %d %s %s\n",
3533 te->dumpId, te->desc, te->tag);
3535 if (status == WORKER_CREATE_DONE)
3536 mark_create_done(AH, te);
3537 else if (status == WORKER_INHIBIT_DATA)
3539 inhibit_data_for_failed_table(AH, te);
3540 AH->public.n_errors++;
3542 else if (status == WORKER_IGNORED_ERRORS)
3543 AH->public.n_errors++;
3544 else if (status != 0)
3545 die_horribly(AH, modulename, "worker process failed: exit code %d\n",
3548 reduce_dependencies(AH, te);
3553 * Process the dependency information into a form useful for parallel restore.
3555 * We set up depCount fields that are the number of as-yet-unprocessed
3556 * dependencies for each TOC entry.
3558 * We also identify locking dependencies so that we can avoid trying to
3559 * schedule conflicting items at the same time.
3562 fix_dependencies(ArchiveHandle *AH)
3564 TocEntry **tocsByDumpId;
3569 * For some of the steps here, it is convenient to have an array that
3570 * indexes the TOC entries by dump ID, rather than searching the TOC
3571 * list repeatedly. Entries for dump IDs not present in the TOC will
3574 * Also, initialize the depCount fields.
3576 tocsByDumpId = (TocEntry **) calloc(AH->maxDumpId, sizeof(TocEntry *));
3577 for (te = AH->toc->next; te != AH->toc; te = te->next)
3579 tocsByDumpId[te->dumpId - 1] = te;
3580 te->depCount = te->nDeps;
3584 * POST_DATA items that are shown as depending on a table need to be
3585 * re-pointed to depend on that table's data, instead. This ensures they
3586 * won't get scheduled until the data has been loaded. We handle this by
3587 * first finding TABLE/TABLE DATA pairs and then scanning all the
3590 * Note: currently, a TABLE DATA should always have exactly one
3591 * dependency, on its TABLE item. So we don't bother to search,
3592 * but look just at the first dependency. We do trouble to make sure
3593 * that it's a TABLE, if possible. However, if the dependency isn't
3594 * in the archive then just assume it was a TABLE; this is to cover
3595 * cases where the table was suppressed but we have the data and some
3596 * dependent post-data items.
3598 for (te = AH->toc->next; te != AH->toc; te = te->next)
3600 if (strcmp(te->desc, "TABLE DATA") == 0 && te->nDeps > 0)
3602 DumpId tableId = te->dependencies[0];
3604 if (tocsByDumpId[tableId - 1] == NULL ||
3605 strcmp(tocsByDumpId[tableId - 1]->desc, "TABLE") == 0)
3607 repoint_table_dependencies(AH, tableId, te->dumpId);
3613 * Pre-8.4 versions of pg_dump neglected to set up a dependency from
3614 * BLOB COMMENTS to BLOBS. Cope. (We assume there's only one BLOBS
3615 * and only one BLOB COMMENTS in such files.)
3617 if (AH->version < K_VERS_1_11)
3619 for (te = AH->toc->next; te != AH->toc; te = te->next)
3621 if (strcmp(te->desc, "BLOB COMMENTS") == 0 && te->nDeps == 0)
3625 for (te2 = AH->toc->next; te2 != AH->toc; te2 = te2->next)
3627 if (strcmp(te2->desc, "BLOBS") == 0)
3629 te->dependencies = (DumpId *) malloc(sizeof(DumpId));
3630 te->dependencies[0] = te2->dumpId;
3642 * It is possible that the dependencies list items that are not in the
3643 * archive at all. Subtract such items from the depCounts.
3645 for (te = AH->toc->next; te != AH->toc; te = te->next)
3647 for (i = 0; i < te->nDeps; i++)
3649 if (tocsByDumpId[te->dependencies[i] - 1] == NULL)
3655 * Lastly, work out the locking dependencies.
3657 for (te = AH->toc->next; te != AH->toc; te = te->next)
3659 te->lockDeps = NULL;
3661 identify_locking_dependencies(te, tocsByDumpId);
3668 * Change dependencies on tableId to depend on tableDataId instead,
3669 * but only in POST_DATA items.
3672 repoint_table_dependencies(ArchiveHandle *AH,
3673 DumpId tableId, DumpId tableDataId)
3678 for (te = AH->toc->next; te != AH->toc; te = te->next)
3680 if (te->section != SECTION_POST_DATA)
3682 for (i = 0; i < te->nDeps; i++)
3684 if (te->dependencies[i] == tableId)
3686 te->dependencies[i] = tableDataId;
3687 ahlog(AH, 2, "transferring dependency %d -> %d to %d\n",
3688 te->dumpId, tableId, tableDataId);
3695 * Identify which objects we'll need exclusive lock on in order to restore
3696 * the given TOC entry (*other* than the one identified by the TOC entry
3697 * itself). Record their dump IDs in the entry's lockDeps[] array.
3698 * tocsByDumpId[] is a convenience array to avoid searching the TOC
3699 * for each dependency.
3702 identify_locking_dependencies(TocEntry *te, TocEntry **tocsByDumpId)
3708 /* Quick exit if no dependencies at all */
3712 /* Exit if this entry doesn't need exclusive lock on other objects */
3713 if (!(strcmp(te->desc, "CONSTRAINT") == 0 ||
3714 strcmp(te->desc, "CHECK CONSTRAINT") == 0 ||
3715 strcmp(te->desc, "FK CONSTRAINT") == 0 ||
3716 strcmp(te->desc, "RULE") == 0 ||
3717 strcmp(te->desc, "TRIGGER") == 0))
3721 * We assume the item requires exclusive lock on each TABLE item
3722 * listed among its dependencies.
3724 lockids = (DumpId *) malloc(te->nDeps * sizeof(DumpId));
3726 for (i = 0; i < te->nDeps; i++)
3728 DumpId depid = te->dependencies[i];
3730 if (tocsByDumpId[depid - 1] &&
3731 strcmp(tocsByDumpId[depid - 1]->desc, "TABLE") == 0)
3732 lockids[nlockids++] = depid;
3741 te->lockDeps = realloc(lockids, nlockids * sizeof(DumpId));
3742 te->nLockDeps = nlockids;
3746 * Remove the specified TOC entry from the depCounts of items that depend on
3747 * it, thereby possibly making them ready-to-run.
3750 reduce_dependencies(ArchiveHandle *AH, TocEntry *te)
3752 DumpId target = te->dumpId;
3755 ahlog(AH,2,"reducing dependencies for %d\n",target);
3758 * We must examine all entries, not only the ones after the target item,
3759 * because if the user used a -L switch then the original dependency-
3760 * respecting order has been destroyed by SortTocFromFile.
3762 for (te = AH->toc->next; te != AH->toc; te = te->next)
3764 for (i = 0; i < te->nDeps; i++)
3766 if (te->dependencies[i] == target)
3773 * Set the created flag on the DATA member corresponding to the given
3777 mark_create_done(ArchiveHandle *AH, TocEntry *te)
3781 for (tes = AH->toc->next; tes != AH->toc; tes = tes->next)
3783 if (strcmp(tes->desc, "TABLE DATA") == 0 &&
3784 strcmp(tes->tag, te->tag) == 0 &&
3785 strcmp(tes->namespace ? tes->namespace : "",
3786 te->namespace ? te->namespace : "") == 0)
3788 tes->created = true;
3795 * Mark the DATA member corresponding to the given TABLE member
3799 inhibit_data_for_failed_table(ArchiveHandle *AH, TocEntry *te)
3801 RestoreOptions *ropt = AH->ropt;
3804 ahlog(AH, 1, "table \"%s\" could not be created, will not restore its data\n",
3807 for (tes = AH->toc->next; tes != AH->toc; tes = tes->next)
3809 if (strcmp(tes->desc, "TABLE DATA") == 0 &&
3810 strcmp(tes->tag, te->tag) == 0 &&
3811 strcmp(tes->namespace ? tes->namespace : "",
3812 te->namespace ? te->namespace : "") == 0)
3814 /* mark it unwanted; we assume idWanted array already exists */
3815 ropt->idWanted[tes->dumpId - 1] = false;
3823 * Clone and de-clone routines used in parallel restoration.
3825 * Enough of the structure is cloned to ensure that there is no
3826 * conflict between different threads each with their own clone.
3828 * These could be public, but no need at present.
3830 static ArchiveHandle *
3831 CloneArchive(ArchiveHandle *AH)
3833 ArchiveHandle *clone;
3835 /* Make a "flat" copy */
3836 clone = (ArchiveHandle *) malloc(sizeof(ArchiveHandle));
3838 die_horribly(AH, modulename, "out of memory\n");
3839 memcpy(clone, AH, sizeof(ArchiveHandle));
3841 /* Handle format-independent fields */
3842 clone->pgCopyBuf = createPQExpBuffer();
3843 clone->sqlBuf = createPQExpBuffer();
3844 clone->sqlparse.tagBuf = NULL;
3846 /* The clone will have its own connection, so disregard connection state */
3847 clone->connection = NULL;
3848 clone->currUser = NULL;
3849 clone->currSchema = NULL;
3850 clone->currTablespace = NULL;
3851 clone->currWithOids = -1;
3853 /* savedPassword must be local in case we change it while connecting */
3854 if (clone->savedPassword)
3855 clone->savedPassword = strdup(clone->savedPassword);
3857 /* clone has its own error count, too */
3858 clone->public.n_errors = 0;
3860 /* Let the format-specific code have a chance too */
3861 (clone->ClonePtr) (clone);
3867 * Release clone-local storage.
3869 * Note: we assume any clone-local connection was already closed.
3872 DeCloneArchive(ArchiveHandle *AH)
3874 /* Clear format-specific state */
3875 (AH->DeClonePtr) (AH);
3877 /* Clear state allocated by CloneArchive */
3878 destroyPQExpBuffer(AH->pgCopyBuf);
3879 destroyPQExpBuffer(AH->sqlBuf);
3880 if (AH->sqlparse.tagBuf)
3881 destroyPQExpBuffer(AH->sqlparse.tagBuf);
3883 /* Clear any connection-local state */
3887 free(AH->currSchema);
3888 if (AH->currTablespace)
3889 free(AH->currTablespace);
3890 if (AH->savedPassword)
3891 free(AH->savedPassword);