1 files changed, 118 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/ttyname.c b/cpukit/libcsupport/src/ttyname.c
new file mode 100644
index 0000000000..ed0b5cbdc1
--- /dev/null
+++ b/cpukit/libcsupport/src/ttyname.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+/*
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef HAVE_TTYNAME
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <termios.h>
+#include <unistd.h>
+#include <string.h>
+#include <paths.h>
+#include <_syslist.h>
+#include <errno.h>
+
+#include <rtems/libio_.h>
+#include <rtems/seterr.h>
+
+static char ttyname_buf[sizeof (_PATH_DEV) + MAXNAMLEN];
+
+/*
+ *  ttyname_r() - POSIX 1003.1b 4.7.2 - Demetermine Terminal Device Name
+ */
+int ttyname_r(
+  int     fd,
+  char   *name,
+  size_t  namesize
+)
+{
+  struct stat sb;
+  struct termios tty;
+  struct dirent *dirp;
+  DIR *dp;
+  struct stat dsb;
+  char *rval;
+
+  /* Must be a terminal. */
+  if (tcgetattr (fd, &tty) < 0)
+    rtems_set_errno_and_return_minus_one(EBADF);
+
+  /* Must be a character device. */
+  if (fstat (fd, &sb) || !S_ISCHR (sb.st_mode))
+    rtems_set_errno_and_return_minus_one(EBADF);
+
+  if ((dp = opendir (_PATH_DEV)) == NULL)
+    rtems_set_errno_and_return_minus_one(EBADF);
+
+  /* Place the base directory in the path. */
+  strncpy (name, _PATH_DEV, namesize);
+
+  for (rval = NULL; (dirp = readdir (dp)) != NULL ;)
+    {
+      if (dirp->d_ino != sb.st_ino)
+	continue;
+      strcpy (name + sizeof (_PATH_DEV) - 1, dirp->d_name);
+      if (stat (name, &dsb) || sb.st_dev != dsb.st_dev ||
+	  sb.st_ino != dsb.st_ino)
+	continue;
+      rval = name;
+      break;
+    }
+  (void) closedir (dp);
+  return 0;
+}
+
+/*
+ *  ttyname() - POSIX 1003.1b 4.7.2 - Determine Terminal Device Name
+ */
+
+char *ttyname(
+  int fd
+)
+{
+  if ( !ttyname_r( fd, ttyname_buf, sizeof(ttyname_buf) ) )
+    return ttyname_buf;
+  return NULL;
+}
+
+#endif