1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/** @file
Implement the sendto API.
Copyright (c) 2011, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <SocketInternals.h>
/**
Send data using a network connection.
The sendto routine queues data to the network for transmission.
This routine is typically used for SOCK_DGRAM sockets that are shared
between multiple machine where it is required to specify the target
system address when sending the data.
The
<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/send.html">POSIX</a>
documentation is available online.
@param [in] s Socket file descriptor returned from ::socket.
@param [in] buffer Address of a buffer containing the data to send.
@param [in] length Length of the buffer in bytes.
@param [in] flags Message control flags
@param [in] to Remote system address
@param [in] tolen Length of remote system address structure
@return This routine returns the number of data bytes that were
sent and -1 when an error occurs. In the case of
an error, ::errno contains more details.
**/
ssize_t
sendto (
int s,
const void * buffer,
size_t length,
int flags,
const struct sockaddr * to,
socklen_t tolen
)
{
BOOLEAN bBlocking;
ssize_t LengthInBytes;
CONST UINT8 * pData;
struct __filedes * pDescriptor;
EFI_SOCKET_PROTOCOL * pSocketProtocol;
EFI_STATUS Status;
//
// Assume failure
//
LengthInBytes = -1;
//
// Locate the context for this socket
//
pSocketProtocol = BslFdToSocketProtocol ( s,
&pDescriptor,
&errno );
if ( NULL != pSocketProtocol ) {
//
// Determine if the operation is blocking
//
bBlocking = (BOOLEAN)( 0 == ( pDescriptor->Oflags & O_NONBLOCK ));
//
// Send the data using the socket
//
pData = buffer;
do {
errno = 0;
Status = pSocketProtocol->pfnTransmit ( pSocketProtocol,
flags,
length,
pData,
(size_t *)&LengthInBytes,
to,
tolen,
&errno );
if ( EFI_ERROR ( Status ) && ( EFI_NOT_READY != Status )) {
LengthInBytes = -1;
break;
}
//
// Account for the data sent
//
pData += LengthInBytes;
length -= LengthInBytes;
} while (( 0 != length ) && ( EFI_NOT_READY == Status ) && bBlocking );
}
//
// Return the number of data bytes sent, -1 for errors
//
return (INT32)LengthInBytes;
}
|
