Add Socket Libraries.

Add Posix functions for porting compatibility.
Fix compliance issues with ISO/IEC 9899:199409
New Functions:
  setenv(), fparseln(), GetFileNameFromPath(), rename(),
  realpath(), setprogname(), getprogname(), strlcat(), strlcpy(),
  strsep(), setitimer(), getitimer(), timegm(), getopt(), basename(),
  mkstemp(), ffs(), vsnprintf(), snprintf(), getpass(), usleep(), select(),
  writev(), strcasecmp(), getcwd(), chdir(), tcgetpgrp(), getpgrp(), gettimeofday(),
  bcopy(), 


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12061 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/BsdSocketLib/gethostname.c

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 1999, 2000
+ * Intel Corporation.
+ * 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 Intel Corporation and its
+ *    contributors.
+ * 
+ * 4. Neither the name of Intel Corporation or its contributors may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION 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 INTEL CORPORATION 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.
+ * 
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/*++
+
+Module Name:
+
+    gethostname.c
+    
+Abstract:
+
+    Map FreeBSD gethostname call to EFI Interface
+
+
+Revision History
+
+--*/
+
+int
+gethostname(
+	char	*name,
+	size_t		namelen
+	)
+/*++
+
+Routine Description:
+
+    Get the hostname for this system.
+
+Arguments:
+    
+	name		- Pointer to storage for hostname.
+	namelen		- Length of name
+
+Returns:
+
+	0 on success, -1 if not set
+
+--*/
+{
+	char	*pHost;
+
+	pHost = getenv ("HOSTNAME");
+
+	if ( pHost == NULL ) {
+		*name = 0;
+	} else {
+		strncpy (name, pHost, namelen);
+		name[namelen-1] = 0;
+	}
+
+	return (0);
+}