106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
/* Copyright (c) 2000, 2019, 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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Without limiting anything contained in the foregoing, this file,
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which is part of C Driver for MySQL (Connector/C), is also subject to the
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Universal FOSS Exception, version 1.0, a copy of which can be found at
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http://oss.oracle.com/licenses/universal-foss-exception.
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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 "my_config.h"
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#include <stdlib.h>
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#include <sys/types.h>
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#include "m_string.h"
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#include "mutex_lock.h"
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#include "my_dbug.h"
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#include "my_inttypes.h"
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#include "my_io.h"
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#include "mysys/mysys_priv.h"
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#include "prealloced_array.h"
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#if defined(_WIN32)
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#define DELIM ';'
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#else
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#define DELIM ':'
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#endif
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bool init_tmpdir(MY_TMPDIR *tmpdir, const char *pathlist) {
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const char *end;
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char *copy;
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char buff[FN_REFLEN];
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DBUG_TRACE;
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DBUG_PRINT("enter", ("pathlist: %s", pathlist ? pathlist : "NULL"));
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Prealloced_array<char *, 10> full_list(key_memory_MY_TMPDIR_full_list);
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*tmpdir = MY_TMPDIR();
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if (!pathlist || !pathlist[0]) {
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/* Get default temporary directory */
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pathlist = getenv("TMPDIR"); /* Use this if possible */
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#if defined(_WIN32)
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if (!pathlist) pathlist = getenv("TEMP");
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if (!pathlist) pathlist = getenv("TMP");
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#endif
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if (!pathlist || !pathlist[0]) pathlist = DEFAULT_TMPDIR;
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}
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do {
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size_t length;
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end = strcend(pathlist, DELIM);
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strmake(buff, pathlist, (uint)(end - pathlist));
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length = cleanup_dirname(buff, buff);
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if (!(copy = my_strndup(key_memory_MY_TMPDIR_full_list, buff, length,
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MYF(MY_WME))) ||
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full_list.push_back(copy))
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return true;
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pathlist = end + 1;
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} while (*end);
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tmpdir->list = static_cast<char **>(
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my_malloc(key_memory_MY_TMPDIR_full_list,
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sizeof(char *) * full_list.size(), MYF(MY_WME)));
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if (tmpdir->list == NULL) return true;
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mysql_mutex_init(key_TMPDIR_mutex, &tmpdir->mutex, MY_MUTEX_INIT_FAST);
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memcpy(tmpdir->list, &full_list[0], sizeof(char *) * full_list.size());
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tmpdir->max = full_list.size() - 1;
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tmpdir->cur = 0;
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return false;
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}
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char *my_tmpdir(MY_TMPDIR *tmpdir) {
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if (0 == tmpdir->max) return tmpdir->list[0];
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MUTEX_LOCK(lock, &tmpdir->mutex);
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char *dir = tmpdir->list[tmpdir->cur];
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tmpdir->cur = (tmpdir->cur == tmpdir->max) ? 0 : tmpdir->cur + 1;
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return dir;
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}
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void free_tmpdir(MY_TMPDIR *tmpdir) {
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if (tmpdir->list == NULL) return;
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for (uint i = 0; i <= tmpdir->max; i++) my_free(tmpdir->list[i]);
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my_free(tmpdir->list);
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mysql_mutex_destroy(&tmpdir->mutex);
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}
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