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Add more low-level, thread-independent socket interfaces

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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4445 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
2012-03-02 19:57:52 +00:00
parent 4f617d5be7
commit bb41cf1b70
8 changed files with 391 additions and 173 deletions
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nuttx/net/getsockopt.c
+72 -21
View File
@@ -1,8 +1,8 @@
/****************************************************************************
* net/getsockopt.c
*
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* 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
@@ -51,11 +51,11 @@
****************************************************************************/
/****************************************************************************
* Function: getsockopt
* Function: psock_getsockopt
*
* Description:
* getsockopt() retrieve thse value for the option specified by the
* 'option' argument for the socket specified by the 'sockfd' argument. If
* 'option' argument for the socket specified by the 'psock' argument. If
* the size of the option value is greater than 'value_len', the value
* stored in the object pointed to by the 'value' argument will be silently
* truncated. Otherwise, the length pointed to by the 'value_len' argument
@@ -68,7 +68,7 @@
* See <sys/socket.h> a complete list of values for the 'option' argument.
*
* Parameters:
* sockfd Socket descriptor of socket
* psock Socket structure of the socket to query
* level Protocol level to set the option
* option identifies the option to get
* value Points to the argument value
@@ -76,15 +76,13 @@
*
* Returned Value:
*
* EBADF
* The 'sockfd' argument is not a valid socket descriptor.
* EINVAL
* The specified option is invalid at the specified socket 'level' or the
* socket has been shutdown.
* ENOPROTOOPT
* The 'option' is not supported by the protocol.
* ENOTSOCK
* The 'sockfd' argument does not refer to a socket.
* The 'psock' argument does not refer to a socket.
* ENOBUFS
* Insufficient resources are available in the system to complete the
* call.
@@ -93,21 +91,11 @@
*
****************************************************************************/
int getsockopt(int sockfd, int level, int option, void *value, socklen_t *value_len)
int psock_getsockopt(FAR struct socket *psock, int level, int option,
FAR void *value, FAR socklen_t *value_len)
{
FAR struct socket *psock;
int err;
/* Get the underlying socket structure */
/* Verify that the sockfd corresponds to valid, allocated socket */
psock = sockfd_socket(sockfd);
if (!psock || psock->s_crefs <= 0)
{
err = EBADF;
goto errout;
}
/* Verify that the socket option if valid (but might not be supported ) */
if (!_SO_GETVALID(option) || !value || !value_len)
@@ -117,6 +105,7 @@ int getsockopt(int sockfd, int level, int option, void *value, socklen_t *value_
}
/* Process the option */
switch (option)
{
/* The following options take a point to an integer boolean value.
@@ -231,8 +220,70 @@ int getsockopt(int sockfd, int level, int option, void *value, socklen_t *value_
return OK;
errout:
*get_errno_ptr() = err;
set_errno(err);
return ERROR;
}
/****************************************************************************
* Function: getsockopt
*
* Description:
* getsockopt() retrieve thse value for the option specified by the
* 'option' argument for the socket specified by the 'sockfd' argument. If
* the size of the option value is greater than 'value_len', the value
* stored in the object pointed to by the 'value' argument will be silently
* truncated. Otherwise, the length pointed to by the 'value_len' argument
* will be modified to indicate the actual length of the'value'.
*
* The 'level' argument specifies the protocol level of the option. To
* retrieve options at the socket level, specify the level argument as
* SOL_SOCKET.
*
* See <sys/socket.h> a complete list of values for the 'option' argument.
*
* Parameters:
* sockfd Socket descriptor of socket
* level Protocol level to set the option
* option identifies the option to get
* value Points to the argument value
* value_len The length of the argument value
*
* Returned Value:
*
* EBADF
* The 'sockfd' argument is not a valid socket descriptor.
* EINVAL
* The specified option is invalid at the specified socket 'level' or the
* socket has been shutdown.
* ENOPROTOOPT
* The 'option' is not supported by the protocol.
* ENOTSOCK
* The 'sockfd' argument does not refer to a socket.
* ENOBUFS
* Insufficient resources are available in the system to complete the
* call.
*
* Assumptions:
*
****************************************************************************/
int getsockopt(int sockfd, int level, int option, void *value, socklen_t *value_len)
{
FAR struct socket *psock;
/* Get the underlying socket structure */
/* Verify that the sockfd corresponds to valid, allocated socket */
psock = sockfd_socket(sockfd);
if (!psock || psock->s_crefs <= 0)
{
set_errno(EBADF);
return ERROR;
}
/* Then let psock_getsockopt() do all of the work */
return psock_getsockopt(psock, level, option, value, value_len);
}
#endif /* CONFIG_NET && CONFIG_NET_SOCKOPTS */