Fix send to properly wait while long transmits are in progress
[mirror_edk2.git] / StdLib / BsdSocketLib / sendto.c
CommitLineData
d7ce7006 1/** @file\r
2 Implement the sendto API.\r
3\r
4 Copyright (c) 2011, Intel Corporation\r
5 All rights reserved. This program and the accompanying materials\r
6 are licensed and made available under the terms and conditions of the BSD License\r
7 which accompanies this distribution. The full text of the license may be found at\r
8 http://opensource.org/licenses/bsd-license.php\r
9\r
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13**/\r
14\r
15#include <SocketInternals.h>\r
16\r
17\r
18/**\r
19 Send data using a network connection.\r
20\r
21 The ::send routine queues data to the network for transmission.\r
22 The\r
23 <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/send.html">POSIX</a>\r
24 documentation is available online.\r
25\r
26 @param [in] s Socket file descriptor returned from ::socket.\r
27\r
28 @param [in] buffer Address of a buffer containing the data to send.\r
29 \r
30 @param [in] length Length of the buffer in bytes.\r
31\r
32 @param [in] flags Message control flags\r
33\r
34 @param [in] to Remote system address\r
35\r
36 @param [in] tolen Length of remote system address structure\r
37\r
38 @returns ::send returns the number of data bytes that were\r
39 sent and -1 when an error occurs. In the case of\r
40 an error, errno contains more details.\r
41\r
42 **/\r
43ssize_t\r
44sendto (\r
45 int s,\r
46 const void * buffer,\r
47 size_t length,\r
48 int flags,\r
49 const struct sockaddr * to,\r
50 socklen_t tolen\r
51 )\r
52{\r
53 ssize_t LengthInBytes;\r
54 CONST UINT8 * pData;\r
55 struct __filedes * pDescriptor;\r
56 EFI_SOCKET_PROTOCOL * pSocketProtocol;\r
57 EFI_STATUS Status;\r
58\r
59 //\r
60 // Assume failure\r
61 //\r
62 LengthInBytes = -1;\r
63\r
64 //\r
65 // Locate the context for this socket\r
66 //\r
67 pSocketProtocol = BslFdToSocketProtocol ( s,\r
68 &pDescriptor,\r
69 &errno );\r
70 if ( NULL != pSocketProtocol ) {\r
71 //\r
72 // Send the data using the socket\r
73 //\r
74 pData = buffer;\r
75 do {\r
76 errno = 0;\r
77 Status = pSocketProtocol->pfnSend ( pSocketProtocol,\r
78 flags,\r
79 length,\r
80 pData,\r
81 (size_t *)&LengthInBytes,\r
82 to,\r
83 tolen,\r
84 &errno );\r
486aace4 85 if ( EFI_ERROR ( Status ) && ( EFI_NOT_READY != Status )) {\r
d7ce7006 86 LengthInBytes = -1;\r
87 break;\r
88 }\r
89\r
90 //\r
91 // Account for the data sent\r
92 //\r
93 pData += LengthInBytes;\r
94 length -= LengthInBytes;\r
95 // TODO: Add non-blocking check\r
96 } while (( 0 != length ) && ( EFI_NOT_READY == Status ));\r
97 }\r
98\r
99 //\r
100 // Return the number of data bytes sent, -1 for errors\r
101 //\r
102 return (INT32)LengthInBytes;\r
103}\r