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/* Copyright (c) 2017, 2025, 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 designed to work 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 either included with
the program or referenced in the documentation.
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 */
#include "sql_restart_server.h"
#ifndef _WIN32
#include <sys/types.h>
#include <unistd.h>
#include <sstream>
#endif // _WIN32
#include "my_thread.h" // my_thread_handle
#include "mysql/components/services/log_builtins.h" // LogErr
#include "mysqld.h" // opt_noacl
#include "mysqld_error.h" // ER_SPECIFIC_ACCESS_DENIED_ERROR
#include "sql/auth/auth_acls.h" // SHUTDOWN_ACL
#include "sql/auth/sql_security_ctx.h" // Security_context
#include "sql/sql_class.h" // THD
#include "sql/sql_lex.h" // LEX
extern my_thread_handle signal_thread_id;
/**
Check if a current user has the privilege SHUTDOWN_ACL required to run
the statement RESTART.
@param thd Current thread
@retval false A user has the privilege SHUTDOWN_ACL.
@retval true A user doesn't have the privilege SHUTDOWN_ACL..
*/
static inline bool check_restart_server_admin_privilege(THD *thd) {
return !opt_noacl && check_global_access(thd, SHUTDOWN_ACL);
}
bool is_mysqld_managed() {
#ifndef _WIN32
char *parent_pid = getenv("MYSQLD_PARENT_PID");
if (parent_pid == nullptr) return false;
return atoi(parent_pid) == getppid();
#else
return !(opt_debugging || opt_no_monitor);
#endif // _WIN32
}
bool Sql_cmd_restart_server::execute(THD *thd) {
DBUG_TRACE;
if (check_restart_server_admin_privilege(thd)) return true;
// RESTART shall not be binlogged.
thd->lex->no_write_to_binlog = true;
query_logger.general_log_print(thd, COM_QUERY, NullS);
if (signal_restart_server()) {
my_error(ER_RESTART_SERVER_FAILED, MYF(0), "Restart server failed");
return true;
}
LogErr(SYSTEM_LEVEL, ER_RESTART_RECEIVED_INFO,
thd->security_context()->user().str, server_version);
my_ok(thd);
return false;
}
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