Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
2026-10-20 07:53:35 +08:00 · 2012-09-17 18:18:44 +00:00
commit 57623d42eb
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+/****************************************************************************
+ * net/bind.c
+ *
+ *   Copyright (C) 2007-2009, 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>
+#ifdef CONFIG_NET
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <errno.h>
+
+#include "net_internal.h"
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: psock_bind
+ *
+ * Description:
+ *   bind() gives the socket 'psock' the local address 'addr'. 'addr' is
+ *   'addrlen' bytes long. Traditionally, this is called "assigning a name to
+ *   a socket." When a socket is created with socket, it exists in a name
+ *   space (address family) but has no name assigned.
+ *
+ * Parameters:
+ *   psock    Socket structure of the socket to bind
+ *   addr     Socket local address
+ *   addrlen  Length of 'addr'
+ *
+ * Returned Value:
+ *   0 on success; -1 on error with errno set appropriately
+ *
+ *   EACCES
+ *     The address is protected, and the user is not the superuser.
+ *   EADDRINUSE
+ *     The given address is already in use.
+ *   EINVAL
+ *     The socket is already bound to an address.
+ *   ENOTSOCK
+ *     psock is a descriptor for a file, not a socket.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int psock_bind(FAR struct socket *psock, const struct sockaddr *addr,
+              socklen_t addrlen)
+{
+#if defined(CONFIG_NET_TCP) || defined(CONFIG_NET_UDP)
+#ifdef CONFIG_NET_IPv6
+  FAR const struct sockaddr_in6 *inaddr = (const struct sockaddr_in6 *)addr;
+#else
+  FAR const struct sockaddr_in *inaddr = (const struct sockaddr_in *)addr;
+#endif
+#endif
+
+  int err;
+  int ret;
+
+  /* Verify that the psock corresponds to valid, allocated socket */
+
+  if (!psock || psock->s_crefs <= 0)
+    {
+      err = ENOTSOCK;
+      goto errout;
+    }
+
+  /* Verify that a valid address has been provided */
+
+#ifdef CONFIG_NET_IPv6
+  if (addr->sa_family != AF_INET6 || addrlen < sizeof(struct sockaddr_in6))
+#else
+  if (addr->sa_family != AF_INET || addrlen < sizeof(struct sockaddr_in))
+#endif
+  {
+      err = EBADF;
+      goto errout;
+  }
+
+  /* Perform the binding depending on the protocol type */
+
+  switch (psock->s_type)
+    {
+#ifdef CONFIG_NET_TCP
+      case SOCK_STREAM:
+        ret = uip_tcpbind(psock->s_conn, inaddr);
+        psock->s_flags |= _SF_BOUND;
+        break;
+#endif
+
+#ifdef CONFIG_NET_UDP
+      case SOCK_DGRAM:
+        ret = uip_udpbind(psock->s_conn, inaddr);
+        break;
+#endif
+
+      default:
+        err = EBADF;
+        goto errout;
+    }
+
+  /* Was the bind successful */
+
+  if (ret < 0)
+    {
+      err = -ret;
+      goto errout;
+    }
+
+  return OK;
+
+errout:
+  *get_errno_ptr() = err;
+  return ERROR;
+}
+
+/****************************************************************************
+ * Function: bind
+ *
+ * Description:
+ *   bind() gives the socket 'sockfd' the local address 'addr'. 'addr' is
+ *   'addrlen' bytes long. Traditionally, this is called "assigning a name to
+ *   a socket." When a socket is created with socket, it exists in a name
+ *   space (address family) but has no name assigned.
+ *
+ * Parameters:
+ *   sockfd   Socket descriptor of the socket to bind
+ *   addr     Socket local address
+ *   addrlen  Length of 'addr'
+ *
+ * Returned Value:
+ *   0 on success; -1 on error with errno set appropriately
+ *
+ *   EACCES
+ *     The address is protected, and the user is not the superuser.
+ *   EADDRINUSE
+ *     The given address is already in use.
+ *   EBADF
+ *     sockfd is not a valid descriptor.
+ *   EINVAL
+ *     The socket is already bound to an address.
+ *   ENOTSOCK
+ *     sockfd is a descriptor for a file, not a socket.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen)
+{
+  /* Make the socket descriptor to the underlying socket structure */
+
+  FAR struct socket *psock = sockfd_socket(sockfd);
+
+  /* Then let psock_bind do all of the work */
+
+  return psock_bind(psock, addr, addrlen);
+}
+
+#endif /* CONFIG_NET */