From b7fc9e0f6d6105ba2203f219743d4b269415e84b Mon Sep 17 00:00:00 2001
From: An-Cheng Huang <ancheng@vyatta.com>
Date: Mon, 12 Nov 2007 13:06:02 -0800
Subject: initial import from bash_3.1dfsg.orig.tar.gz

---
 lib/sh/netconn.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 lib/sh/netconn.c

(limited to 'lib/sh/netconn.c')

diff --git a/lib/sh/netconn.c b/lib/sh/netconn.c
new file mode 100644
index 0000000..ae7c249
--- /dev/null
+++ b/lib/sh/netconn.c
@@ -0,0 +1,83 @@
+/* netconn.c -- is a particular file descriptor a network connection?. */
+
+/* Copyright (C) 2002-2005 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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; either version 2, or (at your option)
+   any later version.
+
+   Bash 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 Bash; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
+*/
+
+#include <config.h>
+
+#include <bashtypes.h>
+#if ! defined(_MINIX) && defined (HAVE_SYS_FILE_H)
+#  include <sys/file.h>
+#endif
+#include <posixstat.h>
+#include <filecntl.h>
+
+#include <errno.h>
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+/* The second and subsequent conditions must match those used to decide
+   whether or not to call getpeername() in isnetconn(). */
+#if defined (HAVE_SYS_SOCKET_H) && defined (HAVE_GETPEERNAME) && !defined (SVR4_2)
+#  include <sys/socket.h>
+#endif
+
+/* Is FD a socket or network connection? */
+int
+isnetconn (fd)
+     int fd;
+{
+#if defined (HAVE_GETPEERNAME) && !defined (SVR4_2) && !defined (__BEOS__)
+  int rv;
+  socklen_t l;
+  struct sockaddr sa;
+
+  l = sizeof(sa);
+  rv = getpeername(fd, &sa, &l);
+  /* Posix.2 says getpeername can return these errors. */
+  return ((rv < 0 && (errno == ENOTSOCK || errno == ENOTCONN || errno == EINVAL)) ? 0 : 1);
+#else /* !HAVE_GETPEERNAME || SVR4_2 || __BEOS__ */
+#  if defined (SVR4) || defined (SVR4_2)
+  /* Sockets on SVR4 and SVR4.2 are character special (streams) devices. */
+  struct stat sb;
+
+  if (isatty (fd))
+    return (0);
+  if (fstat (fd, &sb) < 0)
+    return (0);
+#    if defined (S_ISFIFO)
+  if (S_ISFIFO (sb.st_mode))
+    return (0);
+#    endif /* S_ISFIFO */
+  return (S_ISCHR (sb.st_mode));
+#  else /* !SVR4 && !SVR4_2 */
+#    if defined (S_ISSOCK) && !defined (__BEOS__)
+  struct stat sb;
+
+  if (fstat (fd, &sb) < 0)
+    return (0);
+  return (S_ISSOCK (sb.st_mode));
+#    else /* !S_ISSOCK || __BEOS__ */
+  return (0);
+#    endif /* !S_ISSOCK || __BEOS__ */
+#  endif /* !SVR4 && !SVR4_2 */
+#endif /* !HAVE_GETPEERNAME || SVR4_2 || __BEOS__ */
+}
-- 
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