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mysqldump.cc
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/*
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
// Dump a table's contents and format to an ASCII file.
#define DUMP_VERSION "10.13"
#include "my_config.h"
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string>
#include "client/client_priv.h"
#include "compression.h"
#include "m_ctype.h"
#include "m_string.h"
#include "map_helpers.h"
#include "my_compiler.h"
#include "my_dbug.h"
#include "my_default.h"
#include "my_hostname.h"
#include "my_inttypes.h"
#include "my_io.h"
#include "my_macros.h"
#include "my_sys.h"
#include "my_systime.h" // GETDATE_DATE_TIME
#include "my_user.h"
#include "mysql.h"
#include "mysql/service_mysql_alloc.h"
#include "mysql_version.h"
#include "mysqld_error.h"
#include "prealloced_array.h"
#include "print_version.h"
#include "scope_guard.h"
#include "template_utils.h"
#include "typelib.h"
#include "welcome_copyright_notice.h" /* ORACLE_WELCOME_COPYRIGHT_NOTICE */
/* Exit codes */
#define EX_USAGE 1
#define EX_MYSQLERR 2
#define EX_CONSCHECK 3
#define EX_EOM 4
#define EX_EOF 5 /* ferror for output file was got */
#define EX_ILLEGAL_TABLE 6
/* index into 'show fields from table' */
#define SHOW_FIELDNAME 0
#define SHOW_TYPE 1
#define SHOW_NULL 2
#define SHOW_DEFAULT 4
#define SHOW_EXTRA 5
/* Size of buffer for dump's select query */
#define QUERY_LENGTH 1536
/* Size of comment buffer. */
#define COMMENT_LENGTH 2048
/* ignore table flags */
#define IGNORE_NONE 0x00 /* no ignore */
#define IGNORE_DATA 0x01 /* don't dump data for this table */
#define MYSQL_UNIVERSAL_CLIENT_CHARSET "utf8mb4"
/* Maximum number of fields per table */
#define MAX_FIELDS 4000
using std::string;
static void add_load_option(DYNAMIC_STRING *str, const char *option,
const char *option_value);
static char *alloc_query_str(size_t size);
static void field_escape(DYNAMIC_STRING *in, const char *from);
static bool verbose = false, opt_no_create_info = false, opt_no_data = false,
quick = true, extended_insert = true, lock_tables = true,
opt_force = false, flush_logs = false, flush_privileges = false,
opt_drop = true, opt_keywords = false, opt_lock = true,
opt_compress = false, create_options = true, opt_quoted = false,
opt_databases = false, opt_alldbs = false, opt_create_db = false,
opt_lock_all_tables = false, opt_set_charset = false,
opt_dump_date = true, opt_autocommit = false,
opt_disable_keys = true, opt_xml = false,
opt_delete_master_logs = false, tty_password = false,
opt_single_transaction = false, opt_comments = false,
opt_compact = false, opt_hex_blob = false,
opt_order_by_primary = false, opt_ignore = false,
opt_complete_insert = false, opt_drop_database = false,
opt_replace_into = false, opt_dump_triggers = false,
opt_routines = false, opt_tz_utc = true, opt_slave_apply = false,
opt_include_master_host_port = false, opt_events = false,
opt_comments_used = false, opt_alltspcs = false,
opt_notspcs = false, opt_drop_trigger = false,
opt_network_timeout = false, stats_tables_included = false,
column_statistics = false,
opt_show_create_table_skip_secondary_engine = false;
static bool insert_pat_inited = false, debug_info_flag = false,
debug_check_flag = false;
static ulong opt_max_allowed_packet, opt_net_buffer_length;
static MYSQL mysql_connection, *mysql = nullptr;
static DYNAMIC_STRING insert_pat;
static char *opt_password = nullptr, *current_user = nullptr,
*current_host = nullptr, *path = nullptr,
*fields_terminated = nullptr, *lines_terminated = nullptr,
*enclosed = nullptr, *opt_enclosed = nullptr, *escaped = nullptr,
*where = nullptr, *opt_compatible_mode_str = nullptr,
*opt_ignore_error = nullptr, *log_error_file = nullptr;
static MEM_ROOT argv_alloc{PSI_NOT_INSTRUMENTED, 512};
static bool ansi_mode = false; ///< Force the "ANSI" SQL_MODE.
/* Server supports character_set_results session variable? */
static bool server_supports_switching_charsets = true;
/**
Use double quotes ("") like in the standard to quote identifiers if true,
otherwise backticks (``, non-standard MySQL feature).
*/
static bool ansi_quotes_mode = false;
static uint opt_zstd_compress_level = default_zstd_compression_level;
static char *opt_compress_algorithm = nullptr;
#define MYSQL_OPT_MASTER_DATA_EFFECTIVE_SQL 1
#define MYSQL_OPT_MASTER_DATA_COMMENTED_SQL 2
#define MYSQL_OPT_SLAVE_DATA_EFFECTIVE_SQL 1
#define MYSQL_OPT_SLAVE_DATA_COMMENTED_SQL 2
static uint opt_enable_cleartext_plugin = 0;
static bool using_opt_enable_cleartext_plugin = false;
static uint opt_mysql_port = 0, opt_master_data;
static uint opt_slave_data;
static uint my_end_arg;
static char *opt_mysql_unix_port = nullptr;
static char *opt_bind_addr = nullptr;
static int first_error = 0;
#include "caching_sha2_passwordopt-vars.h"
#include "sslopt-vars.h"
FILE *md_result_file = nullptr;
FILE *stderror_file = nullptr;
const char *set_gtid_purged_mode_names[] = {"OFF", "AUTO", "ON", "COMMENTED",
NullS};
static TYPELIB set_gtid_purged_mode_typelib = {
array_elements(set_gtid_purged_mode_names) - 1, "",
set_gtid_purged_mode_names, nullptr};
static enum enum_set_gtid_purged_mode {
SET_GTID_PURGED_OFF = 0,
SET_GTID_PURGED_AUTO = 1,
SET_GTID_PURGED_ON = 2,
SET_GTID_PURGED_COMMENTED = 3
} opt_set_gtid_purged_mode = SET_GTID_PURGED_AUTO;
#if defined(_WIN32)
static char *shared_memory_base_name = 0;
#endif
static uint opt_protocol = 0;
static char *opt_plugin_dir = nullptr, *opt_default_auth = nullptr;
Prealloced_array<uint, 12> ignore_error(PSI_NOT_INSTRUMENTED);
static int parse_ignore_error();
/*
Dynamic_string wrapper functions. In this file use these
wrappers, they will terminate the process if there is
an allocation failure.
*/
static void init_dynamic_string_checked(DYNAMIC_STRING *str,
const char *init_str,
size_t init_alloc);
static void dynstr_append_checked(DYNAMIC_STRING *dest, const char *src);
static void dynstr_set_checked(DYNAMIC_STRING *str, const char *init_str);
static void dynstr_append_mem_checked(DYNAMIC_STRING *str, const char *append,
size_t length);
static void dynstr_realloc_checked(DYNAMIC_STRING *str, size_t additional_size);
/*
Constant for detection of default value of default_charset.
If default_charset is equal to mysql_universal_client_charset, then
it is the default value which assigned at the very beginning of main().
*/
static const char *mysql_universal_client_charset =
MYSQL_UNIVERSAL_CLIENT_CHARSET;
static const char *default_charset;
static CHARSET_INFO *charset_info = &my_charset_latin1;
const char *default_dbug_option = "d:t:o,/tmp/mysqldump.trace";
/* have we seen any VIEWs during table scanning? */
bool seen_views = false;
collation_unordered_set<string> *ignore_table;
static struct my_option my_long_options[] = {
{"all-databases", 'A',
"Dump all the databases. This will be same as --databases with all "
"databases selected.",
&opt_alldbs, &opt_alldbs, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"all-tablespaces", 'Y', "Dump all the tablespaces.", &opt_alltspcs,
&opt_alltspcs, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"no-tablespaces", 'y', "Do not dump any tablespace information.",
&opt_notspcs, &opt_notspcs, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"add-drop-database", OPT_DROP_DATABASE,
"Add a DROP DATABASE before each create.", &opt_drop_database,
&opt_drop_database, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"add-drop-table", OPT_DROP, "Add a DROP TABLE before each create.",
&opt_drop, &opt_drop, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0,
nullptr},
{"add-drop-trigger", 0, "Add a DROP TRIGGER before each create.",
&opt_drop_trigger, &opt_drop_trigger, nullptr, GET_BOOL, NO_ARG, 0, 0, 0,
nullptr, 0, nullptr},
{"add-locks", OPT_LOCKS, "Add locks around INSERT statements.", &opt_lock,
&opt_lock, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0, nullptr},
{"allow-keywords", OPT_KEYWORDS,
"Allow creation of column names that are keywords.", &opt_keywords,
&opt_keywords, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"apply-slave-statements", OPT_MYSQLDUMP_SLAVE_APPLY,
"Adds 'STOP SLAVE' prior to 'CHANGE MASTER' and 'START SLAVE' to bottom "
"of dump.",
&opt_slave_apply, &opt_slave_apply, nullptr, GET_BOOL, NO_ARG, 0, 0, 0,
nullptr, 0, nullptr},
{"bind-address", 0, "IP address to bind to.", (uchar **)&opt_bind_addr,
(uchar **)&opt_bind_addr, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr,
0, nullptr},
{"character-sets-dir", OPT_CHARSETS_DIR,
"Directory for character set files.", &charsets_dir, &charsets_dir,
nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"column-statistics", 0,
"Add an ANALYZE TABLE statement to regenerate any existing column "
"statistics.",
&column_statistics, &column_statistics, nullptr, GET_BOOL, NO_ARG, 1, 0, 0,
nullptr, 0, nullptr},
{"comments", 'i', "Write additional information.", &opt_comments,
&opt_comments, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0, nullptr},
{"compatible", OPT_COMPATIBLE,
"Change the dump to be compatible with a given mode. By default tables "
"are dumped in a format optimized for MySQL. The only legal mode is ANSI."
"Note: Requires MySQL server version 4.1.0 or higher. "
"This option is ignored with earlier server versions.",
&opt_compatible_mode_str, &opt_compatible_mode_str, nullptr, GET_STR,
REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"compact", OPT_COMPACT,
"Give less verbose output (useful for debugging). Disables structure "
"comments and header/footer constructs. Enables options --skip-add-"
"drop-table --skip-add-locks --skip-comments --skip-disable-keys "
"--skip-set-charset.",
&opt_compact, &opt_compact, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"complete-insert", 'c', "Use complete insert statements.",
&opt_complete_insert, &opt_complete_insert, nullptr, GET_BOOL, NO_ARG, 0,
0, 0, nullptr, 0, nullptr},
{"compress", 'C', "Use compression in server/client protocol.",
&opt_compress, &opt_compress, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr,
0, nullptr},
{"create-options", 'a', "Include all MySQL specific create options.",
&create_options, &create_options, nullptr, GET_BOOL, NO_ARG, 1, 0, 0,
nullptr, 0, nullptr},
{"databases", 'B',
"Dump several databases. Note the difference in usage; in this case no "
"tables are given. All name arguments are regarded as database names. "
"'USE db_name;' will be included in the output.",
&opt_databases, &opt_databases, nullptr, GET_BOOL, NO_ARG, 0, 0, 0,
nullptr, 0, nullptr},
#ifdef NDEBUG
{"debug", '#', "This is a non-debug version. Catch this and exit.", 0, 0, 0,
GET_DISABLED, OPT_ARG, 0, 0, 0, 0, 0, 0},
{"debug-check", OPT_DEBUG_CHECK,
"This is a non-debug version. Catch this and exit.", 0, 0, 0, GET_DISABLED,
NO_ARG, 0, 0, 0, 0, 0, 0},
{"debug-info", OPT_DEBUG_INFO,
"This is a non-debug version. Catch this and exit.", 0, 0, 0, GET_DISABLED,
NO_ARG, 0, 0, 0, 0, 0, 0},
#else
{"debug", '#', "Output debug log.", &default_dbug_option,
&default_dbug_option, nullptr, GET_STR, OPT_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"debug-check", OPT_DEBUG_CHECK,
"Check memory and open file usage at exit.", &debug_check_flag,
&debug_check_flag, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"debug-info", OPT_DEBUG_INFO, "Print some debug info at exit.",
&debug_info_flag, &debug_info_flag, nullptr, GET_BOOL, NO_ARG, 0, 0, 0,
nullptr, 0, nullptr},
#endif
{"default-character-set", OPT_DEFAULT_CHARSET,
"Set the default character set.", &default_charset, &default_charset,
nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"delete-master-logs", OPT_DELETE_MASTER_LOGS,
"Delete logs on master after backup. This automatically enables "
"--master-data.",
&opt_delete_master_logs, &opt_delete_master_logs, nullptr, GET_BOOL,
NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"disable-keys", 'K',
"'/*!40000 ALTER TABLE tb_name DISABLE KEYS */; and '/*!40000 ALTER "
"TABLE tb_name ENABLE KEYS */; will be put in the output.",
&opt_disable_keys, &opt_disable_keys, nullptr, GET_BOOL, NO_ARG, 1, 0, 0,
nullptr, 0, nullptr},
{"dump-slave", OPT_MYSQLDUMP_SLAVE_DATA,
"This causes the binary log position and filename of the master to be "
"appended to the dumped data output. Setting the value to 1, will print"
"it as a CHANGE MASTER command in the dumped data output; if equal"
" to 2, that command will be prefixed with a comment symbol. "
"This option will turn --lock-all-tables on, unless "
"--single-transaction is specified too (in which case a "
"global read lock is only taken a short time at the beginning of the dump "
"- don't forget to read about --single-transaction below). In all cases "
"any action on logs will happen at the exact moment of the dump."
"Option automatically turns --lock-tables off.",
&opt_slave_data, &opt_slave_data, nullptr, GET_UINT, OPT_ARG, 0, 0,
MYSQL_OPT_SLAVE_DATA_COMMENTED_SQL, nullptr, 0, nullptr},
{"events", 'E', "Dump events.", &opt_events, &opt_events, nullptr, GET_BOOL,
NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"extended-insert", 'e',
"Use multiple-row INSERT syntax that include several VALUES lists.",
&extended_insert, &extended_insert, nullptr, GET_BOOL, NO_ARG, 1, 0, 0,
nullptr, 0, nullptr},
{"fields-terminated-by", OPT_FTB,
"Fields in the output file are terminated by the given string.",
&fields_terminated, &fields_terminated, nullptr, GET_STR, REQUIRED_ARG, 0,
0, 0, nullptr, 0, nullptr},
{"fields-enclosed-by", OPT_ENC,
"Fields in the output file are enclosed by the given character.",
&enclosed, &enclosed, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"fields-optionally-enclosed-by", OPT_O_ENC,
"Fields in the output file are optionally enclosed by the given "
"character.",
&opt_enclosed, &opt_enclosed, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0,
nullptr, 0, nullptr},
{"fields-escaped-by", OPT_ESC,
"Fields in the output file are escaped by the given character.", &escaped,
&escaped, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"flush-logs", 'F',
"Flush logs file in server before starting dump. "
"Note that if you dump many databases at once (using the option "
"--databases= or --all-databases), the logs will be flushed for "
"each database dumped. The exception is when using --lock-all-tables "
"or --master-data: "
"in this case the logs will be flushed only once, corresponding "
"to the moment all tables are locked. So if you want your dump and "
"the log flush to happen at the same exact moment you should use "
"--lock-all-tables or --master-data with --flush-logs.",
&flush_logs, &flush_logs, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"flush-privileges", OPT_ESC,
"Emit a FLUSH PRIVILEGES statement "
"after dumping the mysql database. This option should be used any "
"time the dump contains the mysql database and any other database "
"that depends on the data in the mysql database for proper restore. ",
&flush_privileges, &flush_privileges, nullptr, GET_BOOL, NO_ARG, 0, 0, 0,
nullptr, 0, nullptr},
{"force", 'f', "Continue even if we get an SQL error.", &opt_force,
&opt_force, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"help", '?', "Display this help message and exit.", nullptr, nullptr,
nullptr, GET_NO_ARG, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"hex-blob", OPT_HEXBLOB,
"Dump binary strings (BINARY, "
"VARBINARY, BLOB) in hexadecimal format.",
&opt_hex_blob, &opt_hex_blob, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr,
0, nullptr},
{"host", 'h', "Connect to host.", ¤t_host, ¤t_host, nullptr,
GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"ignore-error", OPT_MYSQLDUMP_IGNORE_ERROR,
"A comma-separated list of "
"error numbers to be ignored if encountered during dump.",
&opt_ignore_error, &opt_ignore_error, nullptr, GET_STR_ALLOC, REQUIRED_ARG,
0, 0, 0, nullptr, 0, nullptr},
{"ignore-table", OPT_IGNORE_TABLE,
"Do not dump the specified table. To specify more than one table to "
"ignore, "
"use the directive multiple times, once for each table. Each table must "
"be specified with both database and table names, e.g., "
"--ignore-table=database.table.",
nullptr, nullptr, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"include-master-host-port", OPT_MYSQLDUMP_INCLUDE_MASTER_HOST_PORT,
"Adds 'MASTER_HOST=<host>, MASTER_PORT=<port>' to 'CHANGE MASTER TO..' "
"in dump produced with --dump-slave.",
&opt_include_master_host_port, &opt_include_master_host_port, nullptr,
GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"insert-ignore", OPT_INSERT_IGNORE, "Insert rows with INSERT IGNORE.",
&opt_ignore, &opt_ignore, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"lines-terminated-by", OPT_LTB,
"Lines in the output file are terminated by the given string.",
&lines_terminated, &lines_terminated, nullptr, GET_STR, REQUIRED_ARG, 0, 0,
0, nullptr, 0, nullptr},
{"lock-all-tables", 'x',
"Locks all tables across all databases. This "
"is achieved by taking a global read lock for the duration of the whole "
"dump. Automatically turns --single-transaction and --lock-tables off.",
&opt_lock_all_tables, &opt_lock_all_tables, nullptr, GET_BOOL, NO_ARG, 0,
0, 0, nullptr, 0, nullptr},
{"lock-tables", 'l', "Lock all tables for read.", &lock_tables,
&lock_tables, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0, nullptr},
{"log-error", OPT_ERROR_LOG_FILE,
"Append warnings and errors to given file.", &log_error_file,
&log_error_file, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"master-data", OPT_MASTER_DATA,
"This causes the binary log position and filename to be appended to the "
"output. If equal to 1, will print it as a CHANGE MASTER command; if equal"
" to 2, that command will be prefixed with a comment symbol. "
"This option will turn --lock-all-tables on, unless "
"--single-transaction is specified too (in which case a "
"global read lock is only taken a short time at the beginning of the "
"dump; "
"don't forget to read about --single-transaction below). In all cases, "
"any action on logs will happen at the exact moment of the dump. "
"Option automatically turns --lock-tables off.",
&opt_master_data, &opt_master_data, nullptr, GET_UINT, OPT_ARG, 0, 0,
MYSQL_OPT_MASTER_DATA_COMMENTED_SQL, nullptr, 0, nullptr},
{"max_allowed_packet", OPT_MAX_ALLOWED_PACKET,
"The maximum packet length to send to or receive from server.",
&opt_max_allowed_packet, &opt_max_allowed_packet, nullptr, GET_ULONG,
REQUIRED_ARG, 24 * 1024 * 1024, 4096, (longlong)2L * 1024L * 1024L * 1024L,
nullptr, 1024, nullptr},
{"net_buffer_length", OPT_NET_BUFFER_LENGTH,
"The buffer size for TCP/IP and socket communication.",
&opt_net_buffer_length, &opt_net_buffer_length, nullptr, GET_ULONG,
REQUIRED_ARG, 1024 * 1024L - 1025, 4096, 16 * 1024L * 1024L, nullptr, 1024,
nullptr},
{"no-autocommit", OPT_AUTOCOMMIT,
"Wrap tables with autocommit/commit statements.", &opt_autocommit,
&opt_autocommit, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"no-create-db", 'n',
"Suppress the CREATE DATABASE ... IF EXISTS statement that normally is "
"output for each dumped database if --all-databases or --databases is "
"given.",
&opt_create_db, &opt_create_db, nullptr, GET_BOOL, NO_ARG, 0, 0, 0,
nullptr, 0, nullptr},
{"no-create-info", 't', "Don't write table creation info.",
&opt_no_create_info, &opt_no_create_info, nullptr, GET_BOOL, NO_ARG, 0, 0,
0, nullptr, 0, nullptr},
{"no-data", 'd', "No row information.", &opt_no_data, &opt_no_data, nullptr,
GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"no-set-names", 'N', "Same as --skip-set-charset.", nullptr, nullptr,
nullptr, GET_NO_ARG, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"opt", OPT_OPTIMIZE,
"Same as --add-drop-table, --add-locks, --create-options, --quick, "
"--extended-insert, --lock-tables, --set-charset, and --disable-keys. "
"Enabled by default, disable with --skip-opt.",
nullptr, nullptr, nullptr, GET_NO_ARG, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"order-by-primary", OPT_ORDER_BY_PRIMARY,
"Sorts each table's rows by primary key, or first unique key, if such a "
"key exists. Useful when dumping a MyISAM table to be loaded into an "
"InnoDB table, but will make the dump itself take considerably longer.",
&opt_order_by_primary, &opt_order_by_primary, nullptr, GET_BOOL, NO_ARG, 0,
0, 0, nullptr, 0, nullptr},
{"password", 'p',
"Password to use when connecting to server. If password is not given it's "
"solicited on the tty.",
nullptr, nullptr, nullptr, GET_PASSWORD, OPT_ARG, 0, 0, 0, nullptr, 0,
nullptr},
#ifdef _WIN32
{"pipe", 'W', "Use named pipes to connect to server.", 0, 0, 0, GET_NO_ARG,
NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
{"port", 'P', "Port number to use for connection.", &opt_mysql_port,
&opt_mysql_port, nullptr, GET_UINT, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"protocol", OPT_MYSQL_PROTOCOL,
"The protocol to use for connection (tcp, socket, pipe, memory).", nullptr,
nullptr, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"quick", 'q', "Don't buffer query, dump directly to stdout.", &quick,
&quick, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0, nullptr},
{"quote-names", 'Q', "Quote table and column names with backticks (`).",
&opt_quoted, &opt_quoted, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0,
nullptr},
{"replace", OPT_MYSQL_REPLACE_INTO,
"Use REPLACE INTO instead of INSERT INTO.", &opt_replace_into,
&opt_replace_into, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"result-file", 'r',
"Direct output to a given file. This option should be used in systems "
"(e.g., DOS, Windows) that use carriage-return linefeed pairs (\\r\\n) "
"to separate text lines. This option ensures that only a single newline "
"is used.",
nullptr, nullptr, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"routines", 'R', "Dump stored routines (functions and procedures).",
&opt_routines, &opt_routines, nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr,
0, nullptr},
{"set-charset", OPT_SET_CHARSET,
"Add 'SET NAMES default_character_set' to the output.", &opt_set_charset,
&opt_set_charset, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0, nullptr},
{"set-gtid-purged", OPT_SET_GTID_PURGED,
"Add 'SET @@GLOBAL.GTID_PURGED' to the output. Possible values for "
"this option are ON, COMMENTED, OFF and AUTO. If ON is used and GTIDs "
"are not enabled on the server, an error is generated. If COMMENTED is "
"used, 'SET @@GLOBAL.GTID_PURGED' is added as a comment. If OFF is "
"used, this option does nothing. If AUTO is used and GTIDs are enabled "
"on the server, 'SET @@GLOBAL.GTID_PURGED' is added to the output. "
"If GTIDs are disabled, AUTO does nothing. If no value is supplied "
"then the default (AUTO) value will be considered.",
nullptr, nullptr, nullptr, GET_STR, OPT_ARG, 0, 0, 0, nullptr, 0, nullptr},
#if defined(_WIN32)
{"shared-memory-base-name", OPT_SHARED_MEMORY_BASE_NAME,
"Base name of shared memory.", &shared_memory_base_name,
&shared_memory_base_name, 0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0,
0},
#endif
/*
Note that the combination --single-transaction --master-data
will give bullet-proof binlog position only if server >=4.1.3. That's the
old "FLUSH TABLES WITH READ LOCK does not block commit" fixed bug.
*/
{"single-transaction", OPT_TRANSACTION,
"Creates a consistent snapshot by dumping all tables in a single "
"transaction. Works ONLY for tables stored in storage engines which "
"support multiversioning (currently only InnoDB does); the dump is NOT "
"guaranteed to be consistent for other storage engines. "
"While a --single-transaction dump is in process, to ensure a valid "
"dump file (correct table contents and binary log position), no other "
"connection should use the following statements: ALTER TABLE, DROP "
"TABLE, RENAME TABLE, TRUNCATE TABLE, as consistent snapshot is not "
"isolated from them. Option automatically turns off --lock-tables.",
&opt_single_transaction, &opt_single_transaction, nullptr, GET_BOOL,
NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"dump-date", OPT_DUMP_DATE, "Put a dump date to the end of the output.",
&opt_dump_date, &opt_dump_date, nullptr, GET_BOOL, NO_ARG, 1, 0, 0,
nullptr, 0, nullptr},
{"skip-opt", OPT_SKIP_OPTIMIZATION,
"Disable --opt. Disables --add-drop-table, --add-locks, --create-options, "
"--quick, --extended-insert, --lock-tables, --set-charset, and "
"--disable-keys.",
nullptr, nullptr, nullptr, GET_NO_ARG, NO_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"socket", 'S', "The socket file to use for connection.",
&opt_mysql_unix_port, &opt_mysql_unix_port, nullptr, GET_STR, REQUIRED_ARG,
0, 0, 0, nullptr, 0, nullptr},
#include "caching_sha2_passwordopt-longopts.h"
#include "sslopt-longopts.h"
{"tab", 'T',
"Create tab-separated textfile for each table to given path. (Create .sql "
"and .txt files.) NOTE: This only works if mysqldump is run on the same "
"machine as the mysqld server.",
&path, &path, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"tables", OPT_TABLES, "Overrides option --databases (-B).", nullptr,
nullptr, nullptr, GET_NO_ARG, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"triggers", OPT_TRIGGERS, "Dump triggers for each dumped table.",
&opt_dump_triggers, &opt_dump_triggers, nullptr, GET_BOOL, NO_ARG, 1, 0, 0,
nullptr, 0, nullptr},
{"tz-utc", OPT_TZ_UTC,
"SET TIME_ZONE='+00:00' at top of dump to allow dumping of TIMESTAMP data "
"when a server has data in different time zones or data is being moved "
"between servers with different time zones.",
&opt_tz_utc, &opt_tz_utc, nullptr, GET_BOOL, NO_ARG, 1, 0, 0, nullptr, 0,
nullptr},
{"user", 'u', "User for login if not current user.", ¤t_user,
¤t_user, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"verbose", 'v', "Print info about the various stages.", &verbose, &verbose,
nullptr, GET_BOOL, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"version", 'V', "Output version information and exit.", nullptr, nullptr,
nullptr, GET_NO_ARG, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"where", 'w', "Dump only selected records. Quotes are mandatory.", &where,
&where, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"xml", 'X', "Dump a database as well formed XML.", nullptr, nullptr,
nullptr, GET_NO_ARG, NO_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"plugin_dir", OPT_PLUGIN_DIR, "Directory for client-side plugins.",
&opt_plugin_dir, &opt_plugin_dir, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0,
nullptr, 0, nullptr},
{"default_auth", OPT_DEFAULT_AUTH,
"Default authentication client-side plugin to use.", &opt_default_auth,
&opt_default_auth, nullptr, GET_STR, REQUIRED_ARG, 0, 0, 0, nullptr, 0,
nullptr},
{"enable_cleartext_plugin", OPT_ENABLE_CLEARTEXT_PLUGIN,
"Enable/disable the clear text authentication plugin.",
&opt_enable_cleartext_plugin, &opt_enable_cleartext_plugin, nullptr,
GET_BOOL, OPT_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"network_timeout", 'M',
"Allows huge tables to be dumped by setting max_allowed_packet to maximum "
"value and net_read_timeout/net_write_timeout to large value.",
&opt_network_timeout, &opt_network_timeout, nullptr, GET_BOOL, NO_ARG, 1,
0, 0, nullptr, 0, nullptr},
{"show_create_table_skip_secondary_engine", 0,
"Controls whether SECONDARY_ENGINE CREATE TABLE clause should be dumped "
"or not. No effect on older servers that do not support the server side "
"option.",
&opt_show_create_table_skip_secondary_engine,
&opt_show_create_table_skip_secondary_engine, nullptr, GET_BOOL, NO_ARG, 0,
0, 0, nullptr, 0, nullptr},
{"compression-algorithms", 0,
"Use compression algorithm in server/client protocol. Valid values "
"are any combination of 'zstd','zlib','uncompressed'.",
&opt_compress_algorithm, &opt_compress_algorithm, nullptr, GET_STR,
REQUIRED_ARG, 0, 0, 0, nullptr, 0, nullptr},
{"zstd-compression-level", 0,
"Use this compression level in the client/server protocol, in case "
"--compression-algorithms=zstd. Valid range is between 1 and 22, "
"inclusive. Default is 3.",
&opt_zstd_compress_level, &opt_zstd_compress_level, nullptr, GET_UINT,
REQUIRED_ARG, 3, 1, 22, nullptr, 0, nullptr},
{nullptr, 0, nullptr, nullptr, nullptr, nullptr, GET_NO_ARG, NO_ARG, 0, 0,
0, nullptr, 0, nullptr}};
static const char *load_default_groups[] = {"mysqldump", "client", nullptr};
static void maybe_exit(int error);
static void die(int error, const char *reason, ...);
static void maybe_die(int error, const char *reason, ...);
static void write_header(FILE *sql_file, char *db_name);
static void print_value(FILE *file, MYSQL_RES *result, MYSQL_ROW row,
const char *prefix, const char *name, int string_value);
static int dump_selected_tables(char *db, char **table_names, int tables);
static int dump_all_tables_in_db(char *db);
static int init_dumping_views(char *);
static int init_dumping_tables(char *);
static int init_dumping(char *, int init_func(char *));
static int dump_databases(char **);
static int dump_all_databases();
static char *quote_name(char *name, char *buff, bool force);
static const char *quote_name(const char *name, char *buff, bool force);
char check_if_ignore_table(const char *table_name, char *table_type);
bool is_infoschema_db(const char *db);
static char *primary_key_fields(const char *table_name);
static bool get_view_structure(char *table, char *db);
static bool dump_all_views_in_db(char *database);
static int dump_all_tablespaces();
static int dump_tablespaces_for_tables(char *db, char **table_names,
int tables);
static int dump_tablespaces_for_databases(char **databases);
static int dump_tablespaces(char *ts_where);
static void print_comment(FILE *sql_file, bool is_error, const char *format,
...);
static void verbose_msg(const char *fmt, ...)
MY_ATTRIBUTE((format(printf, 1, 2)));
static char const *fix_identifier_with_newline(char const *object_name,
bool *freemem);
/*
Print the supplied message if in verbose mode
SYNOPSIS
verbose_msg()
fmt format specifier
... variable number of parameters
*/
static void verbose_msg(const char *fmt, ...) {
va_list args;
DBUG_TRACE;
if (!verbose) return;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
fflush(stderr);
}
/*
exit with message if ferror(file)
SYNOPSIS
check_io()
file - checked file
*/
static void check_io(FILE *file) {
if (ferror(file) || errno == 5) die(EX_EOF, "Got errno %d on write", errno);
}
static void short_usage_sub(void) {
printf("Usage: %s [OPTIONS] database [tables]\n", my_progname);
printf("OR %s [OPTIONS] --databases [OPTIONS] DB1 [DB2 DB3...]\n",
my_progname);
printf("OR %s [OPTIONS] --all-databases [OPTIONS]\n", my_progname);
}
static void usage(void) {
print_version();
puts(ORACLE_WELCOME_COPYRIGHT_NOTICE("2000"));
puts("Dumping structure and contents of MySQL databases and tables.");
short_usage_sub();
print_defaults("my", load_default_groups);
my_print_help(my_long_options);
my_print_variables(my_long_options);
} /* usage */
static void short_usage(void) {
short_usage_sub();
printf("For more options, use %s --help\n", my_progname);
}
static void write_header(FILE *sql_file, char *db_name) {
if (opt_xml) {
fputs("<?xml version=\"1.0\"?>\n", sql_file);
/*
Schema reference. Allows use of xsi:nil for NULL values and
xsi:type to define an element's data type.
*/
fputs("<mysqldump ", sql_file);
fputs("xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"", sql_file);
fputs(">\n", sql_file);
check_io(sql_file);
} else if (!opt_compact) {
print_comment(
sql_file, false, "-- MySQL dump %s Distrib %s, for %s (%s)\n--\n",
DUMP_VERSION, MYSQL_SERVER_VERSION, SYSTEM_TYPE, MACHINE_TYPE);
bool freemem = false;
char const *text = fix_identifier_with_newline(db_name, &freemem);
print_comment(sql_file, false, "-- Host: %s Database: %s\n",
current_host ? current_host : "localhost", text);
if (freemem) my_free(const_cast<char *>(text));
print_comment(
sql_file, false,
"-- ------------------------------------------------------\n");
print_comment(sql_file, false, "-- Server version\t%s\n",
mysql_get_server_info(&mysql_connection));
if (opt_set_charset)
fprintf(
sql_file,
"\n/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;"
"\n/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS "
"*/;"
"\n/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;"
"\n/*!50503 SET NAMES %s */;\n",
default_charset);
if (opt_tz_utc) {
fprintf(sql_file, "/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;\n");
fprintf(sql_file, "/*!40103 SET TIME_ZONE='+00:00' */;\n");
}
if (stats_tables_included) {
fprintf(sql_file,
"/*!50606 SET "
"@OLD_INNODB_STATS_AUTO_RECALC=@@INNODB_STATS_AUTO_RECALC */;\n");
fprintf(sql_file,
"/*!50606 SET GLOBAL INNODB_STATS_AUTO_RECALC=OFF */;\n");
}
if (!path) {
fprintf(md_result_file,
"\
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;\n\
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;\n\
");
}
const char *mode1 = path ? "" : "NO_AUTO_VALUE_ON_ZERO";
const char *mode2 = ansi_mode ? "ANSI" : "";
const char *comma = *mode1 && *mode2 ? "," : "";
fprintf(sql_file,
"/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='%s%s%s' */;\n"
"/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;\n",
mode1, comma, mode2);
check_io(sql_file);
}
} /* write_header */
static void write_footer(FILE *sql_file) {
if (opt_xml) {
fputs("</mysqldump>\n", sql_file);
check_io(sql_file);
} else if (!opt_compact) {
if (opt_tz_utc)
fprintf(sql_file, "/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;\n");
if (stats_tables_included)
fprintf(sql_file,
"/*!50606 SET GLOBAL "
"INNODB_STATS_AUTO_RECALC=@OLD_INNODB_STATS_AUTO_RECALC */;\n");
fprintf(sql_file, "\n/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;\n");
if (!path) {
fprintf(md_result_file,
"\
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;\n\
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;\n");
}
if (opt_set_charset)
fprintf(
sql_file,
"/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;\n"
"/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;\n"
"/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;\n");
fprintf(sql_file, "/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;\n");
fputs("\n", sql_file);
if (opt_dump_date) {
char time_str[20];
get_date(time_str, GETDATE_DATE_TIME, 0);
print_comment(sql_file, false, "-- Dump completed on %s\n", time_str);
} else
print_comment(sql_file, false, "-- Dump completed\n");
check_io(sql_file);
}
} /* write_footer */
static bool get_one_option(int optid, const struct my_option *opt,
char *argument) {
switch (optid) {
case 'p':
if (argument == disabled_my_option) {
// Don't require password
static char empty_password[] = {'\0'};
assert(empty_password[0] ==
'\0'); // Check that it has not been overwritten
argument = empty_password;
}
if (argument) {
char *start = argument;
my_free(opt_password);
opt_password = my_strdup(PSI_NOT_INSTRUMENTED, argument, MYF(MY_FAE));
while (*argument) *argument++ = 'x'; /* Destroy argument */
if (*start) start[1] = 0; /* Cut length of argument */
tty_password = false;
} else
tty_password = true;
break;
case 'r':
if (!(md_result_file =
my_fopen(argument, O_WRONLY | MY_FOPEN_BINARY, MYF(MY_WME))))
exit(1);
break;
case 'W':
#ifdef _WIN32
opt_protocol = MYSQL_PROTOCOL_PIPE;
#endif
break;
case 'N':
opt_set_charset = false;
break;
case 'T':
opt_disable_keys = false;
if (strlen(argument) >= FN_REFLEN) {
/*
This check is made because the some the file functions below
have FN_REFLEN sized stack allocated buffers and will cause
a crash even if the input destination buffer is large enough
to hold the output.
*/
die(EX_USAGE, "Input filename too long: %s", argument);
}
break;
case '#':
DBUG_PUSH(argument ? argument : default_dbug_option);
debug_check_flag = true;
break;
#include "sslopt-case.h"
case 'V':
print_version();
exit(0);
case 'X':
opt_xml = true;
extended_insert = opt_drop = opt_lock = opt_disable_keys =
opt_autocommit = opt_create_db = false;
break;
case 'i':
opt_comments_used = true;
break;
case 'I':
case '?':
usage();
exit(0);
case (int)OPT_MASTER_DATA:
if (!argument) /* work like in old versions */
opt_master_data = MYSQL_OPT_MASTER_DATA_EFFECTIVE_SQL;
break;
case (int)OPT_MYSQLDUMP_SLAVE_DATA:
if (!argument) /* work like in old versions */
opt_slave_data = MYSQL_OPT_SLAVE_DATA_EFFECTIVE_SQL;
break;
case (int)OPT_OPTIMIZE:
extended_insert = opt_drop = opt_lock = quick = create_options =
opt_disable_keys = lock_tables = opt_set_charset = true;
break;
case (int)OPT_SKIP_OPTIMIZATION:
extended_insert = opt_drop = opt_lock = quick = create_options =
opt_disable_keys = lock_tables = opt_set_charset = false;
break;
case (int)OPT_COMPACT:
if (opt_compact) {
opt_comments = opt_drop = opt_disable_keys = opt_lock = false;
opt_set_charset = false;
}
break;
case (int)OPT_TABLES:
opt_databases = false;
break;
case (int)OPT_IGNORE_TABLE: {
if (!strchr(argument, '.')) {
fprintf(stderr,
"Illegal use of option --ignore-table=<database>.<table>\n");
exit(1);
}
ignore_table->insert(argument);
break;
}
case (int)OPT_COMPATIBLE: {
if (native_strcasecmp("ANSI", argument) != 0) {
fprintf(stderr, "Invalid mode to --compatible: %s\n", argument);
exit(1);
}
opt_quoted = true;
opt_set_charset = false;
ansi_quotes_mode = true;
ansi_mode = true;
/*
Set charset to the default compiled value if it hasn't
been reset yet by --default-character-set=xxx.
*/
if (default_charset == mysql_universal_client_charset)
default_charset = MYSQL_DEFAULT_CHARSET_NAME;
break;
}
case (int)OPT_ENABLE_CLEARTEXT_PLUGIN:
using_opt_enable_cleartext_plugin = true;
break;
case (int)OPT_MYSQL_PROTOCOL:
opt_protocol =
find_type_or_exit(argument, &sql_protocol_typelib, opt->name);
break;
case (int)OPT_SET_GTID_PURGED: {
if (argument)
opt_set_gtid_purged_mode = static_cast<enum_set_gtid_purged_mode>(
find_type_or_exit(argument, &set_gtid_purged_mode_typelib,
opt->name) -
1);
break;
}
case (int)OPT_MYSQLDUMP_IGNORE_ERROR:
/* Store the supplied list of errors into an array. */
if (parse_ignore_error()) exit(EX_EOM);
break;
}
return false;
}
static int get_options(int *argc, char ***argv) {
int ho_error;
if (mysql_get_option(nullptr, MYSQL_OPT_MAX_ALLOWED_PACKET,
&opt_max_allowed_packet) ||
mysql_get_option(nullptr, MYSQL_OPT_NET_BUFFER_LENGTH,
&opt_max_allowed_packet)) {
exit(1);
}
md_result_file = stdout;
my_getopt_use_args_separator = true;
if (load_defaults("my", load_default_groups, argc, argv, &argv_alloc))
return 1;
my_getopt_use_args_separator = false;
ignore_table =
new collation_unordered_set<string>(charset_info, PSI_NOT_INSTRUMENTED);
/* Don't copy internal log tables */
ignore_table->insert("mysql.apply_status");
ignore_table->insert("mysql.schema");
ignore_table->insert("mysql.general_log");
ignore_table->insert("mysql.slow_log");
if ((ho_error = handle_options(argc, argv, my_long_options, get_one_option)))
return (ho_error);
if (mysql_options(nullptr, MYSQL_OPT_MAX_ALLOWED_PACKET,
&opt_max_allowed_packet) ||
mysql_options(nullptr, MYSQL_OPT_NET_BUFFER_LENGTH,
&opt_net_buffer_length)) {
exit(1);
}