Move the header of set/sethostname from libc/unisted to net/netdb. Th…

…is is OS internal stuff

include/nuttx/net/netdb.h

@@ -0,0 +1,127 @@
+/****************************************************************************
+ * include/nuttx/net/netdb.h
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author:  Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Includes some definitions that a compatible with the LGPL GNU C Library
+ * header file of the same name.
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_NUTTX_NET_NETDB_H
+#define __INCLUDE_NUTTX_NET_NETDB_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+
+#include <nuttx/net/netconfig.h>
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: netdb_gethostname
+ *
+ * Description:
+ *   The netdb_gethostname() function will return the standard host name for
+ *   the current machine. The namelen argument will specify the size of the
+ *   array pointed to by the name argument. The returned name will be null-
+ *   terminated, except that if namelen is an insufficient length to hold the
+ *   host name, then the returned name will be truncated and it is
+ *   unspecified whether the returned name is null-terminated.
+ *
+ *   Host names are limited to {HOST_NAME_MAX} bytes.
+ *
+ * Input Parameters:
+ *   name - The user-provided buffer to receive the host name.
+ *   namelen - The size of the user provided buffer in bytes.
+ *
+ * Returned Value:
+ *   Upon successful completion, 0 will be returned; otherwise, -1 will be
+ *   returned.  No errors are defined;  errno variable is not set.
+ *
+ ****************************************************************************/
+
+int netdb_gethostname(FAR char *name, size_t namelen);
+
+/****************************************************************************
+ * Name: netdb_sethostname
+ *
+ * Description:
+ *
+ *   netdb_sethostname() sets the hostname to the value given in the
+ *   character array name. The len argument specifies the number of bytes in
+ *   name.  (Thus, name does not require a terminating null byte.)
+ *
+ * Input Parameters:
+ *   name - The user buffer to providing the new host name.
+ *   namelen - The size of the user buffer in bytes.
+ *
+ * Returned Value:
+ *   Upon successful completion, 0 will be returned; otherwise, -1 will be
+ *   returned.  No errors are defined;  errno variable is not set.
+ *
+ ****************************************************************************/
+
+int netdb_sethostname(FAR const char *name, size_t size);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __INCLUDE_NUTTX_NET_NETDB_H */

libc/unistd/lib_sethostname.c

@@ -0,0 +1,98 @@
+/****************************************************************************
+ * libc/unistd/lib_gethostname.c
+ *
+ *   Copyright (C) 2015 Stavros Polymenis. All rights reserved.
+ *   Author: Stavros Polymenis <sp@orbitalfox.com>
+ *
+ * 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 <unistd.h>
+
+#include <nuttx/net/netdb.h>
+
+/* This file is only compiled if network support is enabled */
+
+#ifdef CONFIG_NET
+
+/* Further, in the protected and kernel build modes where kernel and
+ * application code are separated, the hostname is a common system property
+ * and must reside only in the kernel.  In that case, this accessor
+ * function only be called from user space is only via a kernel system call.
+ */
+
+#if (!defined(CONFIG_BUILD_PROTECTED) && !defined(CONFIG_BUILD_KERNEL)) || \
+      defined(__KERNEL__)
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: sethostname
+ *
+ * Description:
+ *
+ *   sethostname() sets the hostname to the value given in the character
+ *   array name. The len argument specifies the number of bytes in name.
+ *   (Thus, name does not require a terminating null byte.)
+ *
+ * Conforming To
+ *   SVr4, 4.4BSD (these interfaces first appeared in 4.2BSD). POSIX.1-2001
+ *   specifies gethostname() but not sethostname().
+ *
+ * Input Parameters:
+ *   name - The user buffer to providing the new host name.
+ *   namelen - The size of the user buffer in bytes.
+ *
+ * Returned Value:
+ *   Upon successful completion, 0 will be returned; otherwise, -1 will be
+ *   returned.  No errors are defined;  errno variable is not set.
+ *
+ ****************************************************************************/
+
+int sethostname(FAR const char *name, size_t size)
+{
+  /* This is just a thin layer over netdb_sethostname() */
+
+  return netdb_sethostname(name, size);
+}
+
+#endif /* CONFIG_NET */
+#endif /* (!CONFIG_BUILD_PROTECTED && !CONFIG_BUILD_KERNEL) || __KERNEL__ */

net/Makefile

@@ -68,6 +68,7 @@ include local/Make.defs
 include tcp/Make.defs
 include udp/Make.defs
 include devif/Make.defs
+include netdb/Make.defs
 include route/Make.defs
 include utils/Make.defs
 endif

net/README.txt

@@ -21,6 +21,7 @@ Directory Structure
        +- route    - Routing table support
        +- tcp      - Transmission Control Protocol
        +- udp      - User Datagram Protocol
+       +- netdb    - Host name support
        `- utils    - Miscellaneous utility functions
 
 

net/netdb/Make.defs

@@ -0,0 +1,43 @@
+############################################################################
+# net/netdb/Make.defs
+#
+#   Copyright (C) 2015 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.
+#
+############################################################################
+
+# Network database interface source files
+
+NET_CSRCS += netdb_gethostname.c netdb_sethostname.c netdb_globals.c
+
+# Include database device interface build support
+
+DEPPATH += --dep-path netdb
+VPATH += :netdb

net/netdb/netdb.h

@@ -0,0 +1,76 @@
+/****************************************************************************
+ * net/netdb/netdb.h
+ *
+ *   Copyright (C) 2015 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.
+ *
+ ****************************************************************************/
+
+#ifndef _NET_NETDB_NETDB_H
+#define _NET_NETDB_NETDB_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <unistd.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/* This is the system hostname */
+
+EXTERN char g_hostname[HOST_NAME_MAX + 1];
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _NET_NETDB_NETDB_H */