From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/mysys_ssl/mf_tempdir.cpp | 100 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 mysql/mysys_ssl/mf_tempdir.cpp

(limited to 'mysql/mysys_ssl/mf_tempdir.cpp')

diff --git a/mysql/mysys_ssl/mf_tempdir.cpp b/mysql/mysys_ssl/mf_tempdir.cpp
new file mode 100644
index 0000000..2935509
--- /dev/null
+++ b/mysql/mysys_ssl/mf_tempdir.cpp
@@ -0,0 +1,100 @@
+/* Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   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 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 "mysys_priv.h"
+#include <m_string.h>
+#include "prealloced_array.h"
+#include "mutex_lock.h"
+
+#if defined(_WIN32)
+#define DELIM ';'
+#else
+#define DELIM ':'
+#endif
+
+my_bool init_tmpdir(MY_TMPDIR *tmpdir, const char *pathlist)
+{
+  char *end, *copy;
+  char buff[FN_REFLEN];
+  DBUG_ENTER("init_tmpdir");
+  DBUG_PRINT("enter", ("pathlist: %s", pathlist ? pathlist : "NULL"));
+
+  Prealloced_array<char*, 10, true> full_list(key_memory_MY_TMPDIR_full_list);
+
+  memset(tmpdir, 0, sizeof(*tmpdir));
+  if (!pathlist || !pathlist[0])
+  {
+    /* Get default temporary directory */
+    pathlist=getenv("TMPDIR");	/* Use this if possible */
+#if defined(_WIN32)
+    if (!pathlist)
+      pathlist=getenv("TEMP");
+    if (!pathlist)
+      pathlist=getenv("TMP");
+#endif
+    if (!pathlist || !pathlist[0])
+      pathlist= DEFAULT_TMPDIR;
+  }
+  do
+  {
+    size_t length;
+    end=strcend(pathlist, DELIM);
+    strmake(buff, pathlist, (uint) (end-pathlist));
+    length= cleanup_dirname(buff, buff);
+    if (!(copy= my_strndup(key_memory_MY_TMPDIR_full_list,
+                           buff, length, MYF(MY_WME))) ||
+        full_list.push_back(copy))
+      DBUG_RETURN(TRUE);
+    pathlist=end+1;
+  }
+  while (*end);
+
+  tmpdir->list=
+    static_cast<char**>(my_malloc(key_memory_MY_TMPDIR_full_list,
+                                  sizeof(char*) * full_list.size(),
+                                  MYF(MY_WME)));
+  if (tmpdir->list == NULL)
+    DBUG_RETURN(TRUE);
+
+  mysql_mutex_init(key_TMPDIR_mutex, &tmpdir->mutex, MY_MUTEX_INIT_FAST);
+  memcpy(tmpdir->list, &full_list[0], sizeof(char*) * full_list.size());
+  tmpdir->max= full_list.size() - 1;
+  tmpdir->cur= 0;
+  DBUG_RETURN(FALSE);
+}
+
+
+char *my_tmpdir(MY_TMPDIR *tmpdir)
+{
+  if (0 == tmpdir->max)
+    return tmpdir->list[0];
+
+  Mutex_lock(&tmpdir->mutex);
+  char *dir= tmpdir->list[tmpdir->cur];
+  tmpdir->cur= (tmpdir->cur == tmpdir->max) ? 0 : tmpdir->cur + 1;
+
+  return dir;
+}
+
+
+void free_tmpdir(MY_TMPDIR *tmpdir)
+{
+  if (tmpdir->list == NULL)
+    return;
+  for (uint i= 0; i <= tmpdir->max; i++)
+    my_free(tmpdir->list[i]);
+  my_free(tmpdir->list);
+  mysql_mutex_destroy(&tmpdir->mutex);
+}
-- 
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