1 files changed, 96 insertions, 0 deletions
diff --git a/mysys/mf_tempdir.c b/mysys/mf_tempdir.c
new file mode 100644
index 00000000..d09b307c
--- /dev/null
+++ b/mysys/mf_tempdir.c
@@ -0,0 +1,96 @@
+/* Copyright (c) 2000, 2013, 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 02110-1335  USA */
+
+#include "mysys_priv.h"
+#include <m_string.h>
+
+#if defined(__WIN__)
+#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"));
+
+  mysql_mutex_init(key_TMPDIR_mutex, &tmpdir->mutex, MY_MUTEX_INIT_FAST);
+  if (my_init_dynamic_array(key_memory_MY_TMPDIR_full_list, &tmpdir->full_list,
+                            sizeof(char*), 1, 5, MYF(0)))
+    goto err;
+  if (!pathlist || !pathlist[0])
+  {
+    /* Get default temporary directory */
+    pathlist=getenv("TMPDIR");	/* Use this if possible */
+#if defined(__WIN__)
+    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))) ||
+        insert_dynamic(&tmpdir->full_list, (uchar*) &copy))
+      DBUG_RETURN(TRUE);
+    pathlist=end+1;
+  }
+  while (*end);
+  freeze_size(&tmpdir->full_list);
+  tmpdir->list=(char **)tmpdir->full_list.buffer;
+  tmpdir->max=tmpdir->full_list.elements-1;
+  tmpdir->cur=0;
+  DBUG_RETURN(FALSE);
+
+err:
+  delete_dynamic(&tmpdir->full_list);           /* Safe to free */
+  mysql_mutex_destroy(&tmpdir->mutex);
+  DBUG_RETURN(TRUE);
+}
+
+
+char *my_tmpdir(MY_TMPDIR *tmpdir)
+{
+  char *dir;
+  if (!tmpdir->max)
+    return tmpdir->list[0];
+  mysql_mutex_lock(&tmpdir->mutex);
+  dir=tmpdir->list[tmpdir->cur];
+  tmpdir->cur= (tmpdir->cur == tmpdir->max) ? 0 : tmpdir->cur+1;
+  mysql_mutex_unlock(&tmpdir->mutex);
+  return dir;
+}
+
+void free_tmpdir(MY_TMPDIR *tmpdir)
+{
+  uint i;
+  if (!tmpdir->full_list.elements)
+    return;
+  for (i=0; i<=tmpdir->max; i++)
+    my_free(tmpdir->list[i]);
+  delete_dynamic(&tmpdir->full_list);
+  mysql_mutex_destroy(&tmpdir->mutex);
+}
+