Add tcsetattr and tcgetattr

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4355 7fd9a85b-ad96-42d3-883c-3090e2eb8679

3 files changed, 253 insertions, 0 deletions

diff --git a/nuttx/lib/dirent/Make.defs b/nuttx/lib/dirent/Make.defs
new file mode 100644
index 000000000..d9dc8c29b
--- /dev/null
+++ b/nuttx/lib/dirent/Make.defs
@@ -0,0 +1,40 @@
+############################################################################
+# lib/dirent/Make.defs
+#
+#   Copyright (C) 2012 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.
+#
+############################################################################
+
+DIRENT_SRCS = 
+ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
+DIRENT_SRCS += lib_readdirr.c lib_telldir.c
+endif
+
diff --git a/nuttx/lib/dirent/lib_readdirr.c b/nuttx/lib/dirent/lib_readdirr.c
new file mode 100644
index 000000000..59a32566d
--- /dev/null
+++ b/nuttx/lib/dirent/lib_readdirr.c
@@ -0,0 +1,122 @@
+/****************************************************************************
+ * lib/dirent/lib_readdirr.c
+ *
+ *   Copyright (C) 2007-2009, 2011-2012 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 <string.h>
+#include <dirent.h>
+#include <errno.h>
+
+#include <nuttx/fs.h>
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: readdir_r
+ *
+ * Description:
+ *   The readdir() function returns a pointer to a dirent
+ *   structure representing the next directory entry in the
+ *   directory stream pointed to by dir.  It returns NULL on
+ *   reaching the end-of-file or if an error occurred.
+ *
+ * Inputs:
+ *   dirp -- An instance of type DIR created by a previous
+ *     call to opendir();
+ *   entry -- The  storage  pointed to by entry must be large
+ *     enough for a dirent with an array of char d_name
+ *     members containing at least {NAME_MAX}+1 elements.
+ *   result -- Upon successful return, the pointer returned
+ *     at *result shall have the  same  value  as  the 
+ *     argument entry. Upon reaching the end of the directory
+ *     stream, this pointer shall have the value NULL.
+ *
+ * Return:
+ *   If successful, the readdir_r() function return s zero;
+ *   otherwise, an error number is returned to indicate the
+ *   error.
+ *
+ *   EBADF   - Invalid directory stream descriptor dir
+ *
+ ****************************************************************************/
+
+int readdir_r(FAR DIR *dirp, FAR struct dirent *entry,
+              FAR struct dirent **result)
+{
+  struct dirent *tmp;
+
+  /* NOTE: The following use or errno is *not* thread-safe */
+
+  set_errno(0);
+  tmp = readdir(dirp);
+  if (!tmp)
+    {
+       int error = get_errno();
+       if (!error)
+          {
+            if (result)
+              {
+                *result = NULL;
+              }
+            return 0;
+          }
+       else
+          {
+            return error;
+          }
+    }
+
+  if (entry)
+    {
+      memcpy(entry, tmp, sizeof(struct dirent));
+    }
+
+  if (result)
+    {
+      *result = entry;
+    }
+  return 0;
+}
+
diff --git a/nuttx/lib/dirent/lib_telldir.c b/nuttx/lib/dirent/lib_telldir.c
new file mode 100644
index 000000000..5bc9a5fed
--- /dev/null
+++ b/nuttx/lib/dirent/lib_telldir.c
@@ -0,0 +1,91 @@
+/****************************************************************************
+ * lib/dirent/fs_telldir.c
+ *
+ *   Copyright (C) 2007-2008, 2011-2012 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 <sys/types.h>
+#include <dirent.h>
+#include <errno.h>
+
+#include <nuttx/fs.h>
+#include <nuttx/dirent.h>
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: telldir
+ *
+ * Description:
+ *   The telldir() function returns the current location
+ *   associated with the directory stream dirp.
+ *
+ * Inputs:
+ *   dirp -- An instance of type DIR created by a previous
+ *     call to opendir();
+ *
+ * Return:
+ *   On success, the telldir() function returns the current
+ *   location in the directory stream.  On error, -1 is
+ *   returned, and errno is set appropriately.
+ *
+ *   EBADF - Invalid directory stream descriptor dir
+ *
+ ****************************************************************************/
+
+off_t telldir(FAR DIR *dirp)
+{
+  struct fs_dirent_s *idir = (struct fs_dirent_s *)dirp;
+
+  if (!idir || !idir->fd_root)
+    {
+      set_errno(EBADF);
+      return (off_t)-1;
+    }
+
+  /* Just return the current position */
+
+  return idir->fd_position;
+}
+