1 files changed, 105 insertions, 0 deletions
diff --git a/nuttx/libc/stdio/lib_tempnam.c b/nuttx/libc/stdio/lib_tempnam.c
new file mode 100644
index 000000000..cf480cdff
--- /dev/null
+++ b/nuttx/libc/stdio/lib_tempnam.c
@@ -0,0 +1,105 @@
+/****************************************************************************
+ * libc/stdio/lib_tempnam.c
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tempnam
+ *
+ * Description:
+ *   The tempnam() function generates a pathname that may be used for a
+ *   temporary file.
+ *
+ *   The tempnam() function allows the user to control the choice of a
+ *   directory. The dir argument points to the name of the directory in which
+ *   the file is to be created. If dir is a null pointer or points to a
+ *   string which is not a name for an appropriate directory, the path prefix
+ *   defined as P_tmpdir in the <stdio.h> header will be used. If that
+ *   directory is not accessible, an implementation-defined directory may be
+ *   used.
+ *
+ *   Many applications prefer their temporary files to have certain initial
+ *   letter sequences in their names. The pfx argument should be used for
+ *   this. This argument may be a null pointer or point to a string of up
+ *   to five bytes to be used as the beginning of the filename.
+ *
+ * Returned Value:
+ *   Upon successful completion, tempnam() will allocate space for a string
+ *   put the generated pathname in that space, and return a pointer to it.
+ *   The pointer will be suitable for use in a subsequent call to free().
+ *   Otherwise, it will return a null pointer and set errno to indicate the
+ *   error.
+ *
+ *   The tempnam() function will fail if:
+ *     ENOMEM - Insufficient storage space is available.
+ *
+ ****************************************************************************/
+
+FAR char *tempnam(FAR const char *dir, FAR const char *pfx)
+{
+  FAR char *path;
+  int ret;
+
+  (void)asprintf(&path, "%s/%s-XXXXXX.tmp", dir, pfx);
+  if (path)
+    {
+      ret = mktemp(path);
+      if (ret == OK)
+        {
+          return path;
+        }
+
+      free(path);
+    }
+
+  set_errno(ENOMEM);
+  return NULL;
+}