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postgresql/src/bin/pg_dump/pg_restore.c

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/*-------------------------------------------------------------------------
*
* pg_restore.c
* pg_restore is an utility extracting postgres database definitions
* from a backup archive created by pg_dump using the archiver
* interface.
*
* pg_restore will read the backup archive and
* dump out a script that reproduces
* the schema of the database in terms of
* user-defined types
* user-defined functions
* tables
* indexes
* aggregates
* operators
* ACL - grant/revoke
*
* the output script is SQL that is understood by PostgreSQL
*
* Basic process in a restore operation is:
*
* Open the Archive and read the TOC.
* Set flags in TOC entries, and *maybe* reorder them.
* Generate script to stdout
* Exit
*
* Copyright (c) 2000, Philip Warner
* Rights are granted to use this software in any way so long
* as this notice is not removed.
*
* The author is not responsible for loss or damages that may
* result from its use.
*
*
* IDENTIFICATION
* src/bin/pg_dump/pg_restore.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
#include <ctype.h>
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#include "dumputils.h"
#include "getopt_long.h"
#include "parallel.h"
#include "pg_backup_utils.h"
static void usage(const char *progname);
int
main(int argc, char **argv)
{
RestoreOptions *opts;
int c;
int exit_code;
int numWorkers = 1;
Archive *AH;
char *inputFileSpec;
static int disable_triggers = 0;
static int enable_row_security = 0;
static int if_exists = 0;
static int no_data_for_failed_tables = 0;
static int outputNoTablespaces = 0;
static int use_setsessauth = 0;
static int no_comments = 0;
static int no_publications = 0;
static int no_security_labels = 0;
static int no_subscriptions = 0;
static int strict_names = 0;
struct option cmdopts[] = {
{"clean", 0, NULL, 'c'},
{"create", 0, NULL, 'C'},
{"data-only", 0, NULL, 'a'},
{"dbname", 1, NULL, 'd'},
{"exit-on-error", 0, NULL, 'e'},
{"exclude-schema", 1, NULL, 'N'},
{"file", 1, NULL, 'f'},
{"format", 1, NULL, 'F'},
{"function", 1, NULL, 'P'},
{"host", 1, NULL, 'h'},
{"index", 1, NULL, 'I'},
{"jobs", 1, NULL, 'j'},
{"list", 0, NULL, 'l'},
{"no-privileges", 0, NULL, 'x'},
{"no-acl", 0, NULL, 'x'},
{"no-owner", 0, NULL, 'O'},
{"no-reconnect", 0, NULL, 'R'},
{"port", 1, NULL, 'p'},
{"no-password", 0, NULL, 'w'},
{"password", 0, NULL, 'W'},
{"schema", 1, NULL, 'n'},
{"schema-only", 0, NULL, 's'},
{"superuser", 1, NULL, 'S'},
{"table", 1, NULL, 't'},
{"trigger", 1, NULL, 'T'},
{"use-list", 1, NULL, 'L'},
{"username", 1, NULL, 'U'},
{"verbose", 0, NULL, 'v'},
{"single-transaction", 0, NULL, '1'},
/*
* the following options don't have an equivalent short option letter
*/
{"disable-triggers", no_argument, &disable_triggers, 1},
{"enable-row-security", no_argument, &enable_row_security, 1},
{"if-exists", no_argument, &if_exists, 1},
{"no-data-for-failed-tables", no_argument, &no_data_for_failed_tables, 1},
{"no-tablespaces", no_argument, &outputNoTablespaces, 1},
{"role", required_argument, NULL, 2},
{"section", required_argument, NULL, 3},
{"strict-names", no_argument, &strict_names, 1},
{"use-set-session-authorization", no_argument, &use_setsessauth, 1},
{"no-comments", no_argument, &no_comments, 1},
{"no-publications", no_argument, &no_publications, 1},
{"no-security-labels", no_argument, &no_security_labels, 1},
{"no-subscriptions", no_argument, &no_subscriptions, 1},
{NULL, 0, NULL, 0}
};
pg_logging_init(argv[0]);
pg_logging_set_level(PG_LOG_WARNING);
set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_dump"));
init_parallel_dump_utils();
opts = NewRestoreOptions();
progname = get_progname(argv[0]);
if (argc > 1)
{
if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
{
usage(progname);
exit_nicely(0);
}
if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
{
puts("pg_restore (PostgreSQL) " PG_VERSION);
exit_nicely(0);
}
}
while ((c = getopt_long(argc, argv, "acCd:ef:F:h:I:j:lL:n:N:Op:P:RsS:t:T:U:vwWx1",
cmdopts, NULL)) != -1)
{
switch (c)
{
case 'a': /* Dump data only */
opts->dataOnly = 1;
break;
case 'c': /* clean (i.e., drop) schema prior to create */
opts->dropSchema = 1;
break;
case 'C':
opts->createDB = 1;
break;
case 'd':
opts->dbname = pg_strdup(optarg);
break;
case 'e':
opts->exit_on_error = true;
break;
case 'f': /* output file name */
opts->filename = pg_strdup(optarg);
break;
case 'F':
if (strlen(optarg) != 0)
opts->formatName = pg_strdup(optarg);
break;
case 'h':
if (strlen(optarg) != 0)
opts->pghost = pg_strdup(optarg);
break;
case 'j': /* number of restore jobs */
numWorkers = atoi(optarg);
break;
case 'l': /* Dump the TOC summary */
opts->tocSummary = 1;
break;
case 'L': /* input TOC summary file name */
opts->tocFile = pg_strdup(optarg);
break;
case 'n': /* Dump data for this schema only */
simple_string_list_append(&opts->schemaNames, optarg);
break;
case 'N': /* Do not dump data for this schema */
simple_string_list_append(&opts->schemaExcludeNames, optarg);
break;
case 'O':
opts->noOwner = 1;
break;
case 'p':
if (strlen(optarg) != 0)
opts->pgport = pg_strdup(optarg);
break;
case 'R':
/* no-op, still accepted for backwards compatibility */
break;
case 'P': /* Function */
opts->selTypes = 1;
opts->selFunction = 1;
simple_string_list_append(&opts->functionNames, optarg);
break;
case 'I': /* Index */
opts->selTypes = 1;
opts->selIndex = 1;
simple_string_list_append(&opts->indexNames, optarg);
break;
case 'T': /* Trigger */
opts->selTypes = 1;
opts->selTrigger = 1;
simple_string_list_append(&opts->triggerNames, optarg);
break;
case 's': /* dump schema only */
opts->schemaOnly = 1;
break;
case 'S': /* Superuser username */
if (strlen(optarg) != 0)
opts->superuser = pg_strdup(optarg);
break;
case 't': /* Dump specified table(s) only */
opts->selTypes = 1;
opts->selTable = 1;
simple_string_list_append(&opts->tableNames, optarg);
break;
case 'U':
opts->username = pg_strdup(optarg);
break;
case 'v': /* verbose */
opts->verbose = 1;
pg_logging_set_level(PG_LOG_INFO);
break;
case 'w':
opts->promptPassword = TRI_NO;
break;
case 'W':
opts->promptPassword = TRI_YES;
break;
case 'x': /* skip ACL dump */
opts->aclsSkip = 1;
break;
case '1': /* Restore data in a single transaction */
opts->single_txn = true;
opts->exit_on_error = true;
break;
case 0:
/*
* This covers the long options without a short equivalent.
*/
break;
case 2: /* SET ROLE */
opts->use_role = pg_strdup(optarg);
break;
case 3: /* section */
set_dump_section(optarg, &(opts->dumpSections));
break;
default:
fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
exit_nicely(1);
}
}
/* Get file name from command line */
if (optind < argc)
inputFileSpec = argv[optind++];
else
inputFileSpec = NULL;
/* Complain if any arguments remain */
if (optind < argc)
{
pg_log_error("too many command-line arguments (first is \"%s\")",
argv[optind]);
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
progname);
exit_nicely(1);
}
/* Complain if neither -f nor -d was specified (except if dumping TOC) */
if (!opts->dbname && !opts->filename && !opts->tocSummary)
{
pg_log_error("one of -d/--dbname and -f/--file must be specified");
exit_nicely(1);
}
/* Should get at most one of -d and -f, else user is confused */
if (opts->dbname)
{
if (opts->filename)
{
pg_log_error("options -d/--dbname and -f/--file cannot be used together");
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
progname);
exit_nicely(1);
}
opts->useDB = 1;
}
if (opts->dataOnly && opts->schemaOnly)
{
pg_log_error("options -s/--schema-only and -a/--data-only cannot be used together");
exit_nicely(1);
}
if (opts->dataOnly && opts->dropSchema)
{
pg_log_error("options -c/--clean and -a/--data-only cannot be used together");
exit_nicely(1);
}
/*
* -C is not compatible with -1, because we can't create a database inside
* a transaction block.
*/
if (opts->createDB && opts->single_txn)
{
pg_log_error("options -C/--create and -1/--single-transaction cannot be used together");
exit_nicely(1);
}
if (numWorkers <= 0)
{
pg_log_error("invalid number of parallel jobs");
exit(1);
}
/* See comments in pg_dump.c */
#ifdef WIN32
if (numWorkers > MAXIMUM_WAIT_OBJECTS)
{
pg_log_error("maximum number of parallel jobs is %d",
MAXIMUM_WAIT_OBJECTS);
exit(1);
}
#endif
/* Can't do single-txn mode with multiple connections */
if (opts->single_txn && numWorkers > 1)
{
pg_log_error("cannot specify both --single-transaction and multiple jobs");
exit_nicely(1);
}
opts->disable_triggers = disable_triggers;
opts->enable_row_security = enable_row_security;
opts->noDataForFailedTables = no_data_for_failed_tables;
opts->noTablespace = outputNoTablespaces;
opts->use_setsessauth = use_setsessauth;
opts->no_comments = no_comments;
opts->no_publications = no_publications;
opts->no_security_labels = no_security_labels;
opts->no_subscriptions = no_subscriptions;
if (if_exists && !opts->dropSchema)
{
pg_log_error("option --if-exists requires option -c/--clean");
exit_nicely(1);
}
opts->if_exists = if_exists;
opts->strict_names = strict_names;
if (opts->formatName)
{
switch (opts->formatName[0])
{
case 'c':
case 'C':
opts->format = archCustom;
break;
case 'd':
case 'D':
opts->format = archDirectory;
break;
case 't':
case 'T':
opts->format = archTar;
break;
default:
pg_log_error("unrecognized archive format \"%s\"; please specify \"c\", \"d\", or \"t\"",
opts->formatName);
exit_nicely(1);
}
}
AH = OpenArchive(inputFileSpec, opts->format);
SetArchiveOptions(AH, NULL, opts);
/*
* We don't have a connection yet but that doesn't matter. The connection
* is initialized to NULL and if we terminate through exit_nicely() while
* it's still NULL, the cleanup function will just be a no-op.
*/
on_exit_close_archive(AH);
/* Let the archiver know how noisy to be */
AH->verbose = opts->verbose;
/*
* Whether to keep submitting sql commands as "pg_restore ... | psql ... "
*/
AH->exit_on_error = opts->exit_on_error;
if (opts->tocFile)
SortTocFromFile(AH);
AH->numWorkers = numWorkers;
if (opts->tocSummary)
PrintTOCSummary(AH);
else
{
ProcessArchiveRestoreOptions(AH);
RestoreArchive(AH);
}
/* done, print a summary of ignored errors */
if (AH->n_errors)
pg_log_warning("errors ignored on restore: %d", AH->n_errors);
/* AH may be freed in CloseArchive? */
exit_code = AH->n_errors ? 1 : 0;
CloseArchive(AH);
return exit_code;
}
static void
usage(const char *progname)
{
printf(_("%s restores a PostgreSQL database from an archive created by pg_dump.\n\n"), progname);
printf(_("Usage:\n"));
printf(_(" %s [OPTION]... [FILE]\n"), progname);
printf(_("\nGeneral options:\n"));
printf(_(" -d, --dbname=NAME connect to database name\n"));
printf(_(" -f, --file=FILENAME output file name (- for stdout)\n"));
printf(_(" -F, --format=c|d|t backup file format (should be automatic)\n"));
printf(_(" -l, --list print summarized TOC of the archive\n"));
printf(_(" -v, --verbose verbose mode\n"));
printf(_(" -V, --version output version information, then exit\n"));
printf(_(" -?, --help show this help, then exit\n"));
printf(_("\nOptions controlling the restore:\n"));
printf(_(" -a, --data-only restore only the data, no schema\n"));
printf(_(" -c, --clean clean (drop) database objects before recreating\n"));
printf(_(" -C, --create create the target database\n"));
printf(_(" -e, --exit-on-error exit on error, default is to continue\n"));
printf(_(" -I, --index=NAME restore named index\n"));
printf(_(" -j, --jobs=NUM use this many parallel jobs to restore\n"));
printf(_(" -L, --use-list=FILENAME use table of contents from this file for\n"
" selecting/ordering output\n"));
printf(_(" -n, --schema=NAME restore only objects in this schema\n"));
printf(_(" -N, --exclude-schema=NAME do not restore objects in this schema\n"));
printf(_(" -O, --no-owner skip restoration of object ownership\n"));
printf(_(" -P, --function=NAME(args) restore named function\n"));
printf(_(" -s, --schema-only restore only the schema, no data\n"));
printf(_(" -S, --superuser=NAME superuser user name to use for disabling triggers\n"));
printf(_(" -t, --table=NAME restore named relation (table, view, etc.)\n"));
printf(_(" -T, --trigger=NAME restore named trigger\n"));
printf(_(" -x, --no-privileges skip restoration of access privileges (grant/revoke)\n"));
printf(_(" -1, --single-transaction restore as a single transaction\n"));
printf(_(" --disable-triggers disable triggers during data-only restore\n"));
printf(_(" --enable-row-security enable row security\n"));
printf(_(" --if-exists use IF EXISTS when dropping objects\n"));
printf(_(" --no-comments do not restore comments\n"));
printf(_(" --no-data-for-failed-tables do not restore data of tables that could not be\n"
" created\n"));
printf(_(" --no-publications do not restore publications\n"));
printf(_(" --no-security-labels do not restore security labels\n"));
printf(_(" --no-subscriptions do not restore subscriptions\n"));
printf(_(" --no-tablespaces do not restore tablespace assignments\n"));
printf(_(" --section=SECTION restore named section (pre-data, data, or post-data)\n"));
printf(_(" --strict-names require table and/or schema include patterns to\n"
" match at least one entity each\n"));
printf(_(" --use-set-session-authorization\n"
" use SET SESSION AUTHORIZATION commands instead of\n"
" ALTER OWNER commands to set ownership\n"));
printf(_("\nConnection options:\n"));
printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
printf(_(" -p, --port=PORT database server port number\n"));
printf(_(" -U, --username=NAME connect as specified database user\n"));
printf(_(" -w, --no-password never prompt for password\n"));
printf(_(" -W, --password force password prompt (should happen automatically)\n"));
printf(_(" --role=ROLENAME do SET ROLE before restore\n"));
printf(_("\n"
"The options -I, -n, -N, -P, -t, -T, and --section can be combined and specified\n"
"multiple times to select multiple objects.\n"));
printf(_("\nIf no input file name is supplied, then standard input is used.\n\n"));
printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
}
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