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90 lines
3.0 KiB
90 lines
3.0 KiB
5 months ago
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/* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "sql/basic_ostream.h"
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#include "my_inttypes.h"
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#include "mysql/components/services/log_shared.h"
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#include "mysql/psi/mysql_file.h"
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#include "mysqld_error.h"
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#include "sql/log.h"
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IO_CACHE_ostream::IO_CACHE_ostream() {}
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IO_CACHE_ostream::~IO_CACHE_ostream() { close(); }
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bool IO_CACHE_ostream::open(
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#ifdef HAVE_PSI_INTERFACE
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PSI_file_key log_file_key MY_ATTRIBUTE((unused)),
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#endif
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const char *file_name, myf flags) {
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File file = -1;
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if ((file = mysql_file_open(log_file_key, file_name, O_CREAT | O_WRONLY,
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MYF(MY_WME))) < 0)
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return true;
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if (init_io_cache(&m_io_cache, file, IO_SIZE, WRITE_CACHE, 0, 0, flags)) {
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mysql_file_close(file, MYF(0));
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return true;
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}
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return false;
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}
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bool IO_CACHE_ostream::close() {
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if (my_b_inited(&m_io_cache)) {
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int ret = end_io_cache(&m_io_cache);
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ret |= mysql_file_close(m_io_cache.file, MYF(MY_WME));
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return ret != 0;
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}
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return false;
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}
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bool IO_CACHE_ostream::seek(my_off_t offset) {
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DBUG_ASSERT(my_b_inited(&m_io_cache));
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return reinit_io_cache(&m_io_cache, WRITE_CACHE, offset, false, true);
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}
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bool IO_CACHE_ostream::write(const unsigned char *buffer, my_off_t length) {
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DBUG_ASSERT(my_b_inited(&m_io_cache));
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DBUG_EXECUTE_IF("simulate_ostream_write_failure", return true;);
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return my_b_safe_write(&m_io_cache, buffer, length);
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}
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bool IO_CACHE_ostream::truncate(my_off_t offset) {
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DBUG_ASSERT(my_b_inited(&m_io_cache));
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DBUG_ASSERT(m_io_cache.file != -1);
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if (my_chsize(m_io_cache.file, offset, 0, MYF(MY_WME))) return true;
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reinit_io_cache(&m_io_cache, WRITE_CACHE, offset, false, true);
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return false;
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}
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bool IO_CACHE_ostream::flush() {
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DBUG_ASSERT(my_b_inited(&m_io_cache));
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return flush_io_cache(&m_io_cache);
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}
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bool IO_CACHE_ostream::sync() {
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DBUG_ASSERT(my_b_inited(&m_io_cache));
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return mysql_file_sync(m_io_cache.file, MYF(MY_WME)) != 0;
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}
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