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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/** @file
Implement the accept 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"
/**
Worker routine for ::accept and ::AcceptNB
@param [in] s Socket file descriptor returned from ::socket.
@param [in] bBlockingAllowed TRUE if this is a blocking call
@param [in] address Address of a buffer to receive the remote network address.
@param [in, out] address_len Address of a buffer containing the Length in bytes
of the remote network address buffer. Upon return,
contains the length of the remote network address.
@return AcceptWork returns zero if successful and -1 when an error occurs.
In the case of an error, ::errno contains more details.
**/
int
AcceptWork (
int s,
BOOLEAN bBlockingAllowed,
struct sockaddr * address,
socklen_t * address_len
)
{
BOOLEAN bBlocking;
INT32 NewSocketFd;
struct __filedes * pDescriptor;
EFI_SOCKET_PROTOCOL * pNewSocket;
EFI_SOCKET_PROTOCOL * pSocketProtocol;
EFI_STATUS Status;
//
// Assume failure
//
NewSocketFd = -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 ));
bBlocking &= bBlockingAllowed;
//
// Attempt to accept a new network connection
//
do {
Status = pSocketProtocol->pfnAccept ( pSocketProtocol,
address,
address_len,
&pNewSocket,
&errno );
} while ( bBlocking && ( EFI_NOT_READY == Status ));
//
// Convert the protocol to a socket
//
if ( !EFI_ERROR ( Status )) {
NewSocketFd = BslSocketProtocolToFd ( pNewSocket, &errno );
if ( -1 == NewSocketFd ) {
//
// Close the socket
//
BslSocketCloseWork ( pNewSocket, NULL );
}
}
}
//
// Return the new socket file descriptor
//
return NewSocketFd;
}
/**
Accept a network connection.
The accept routine waits for a network connection to the socket.
It returns the remote network address to the caller if requested.
The
<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/accept.html">POSIX</a>
documentation is available online.
@param [in] s Socket file descriptor returned from ::socket.
@param [in] address Address of a buffer to receive the remote network address.
@param [in, out] address_len Address of a buffer containing the Length in bytes
of the remote network address buffer. Upon return,
contains the length of the remote network address.
@return The accept routine returns zero if successful and -1 when an error occurs.
In the case of an error, ::errno contains more details.
**/
int
accept (
int s,
struct sockaddr * address,
socklen_t * address_len
)
{
//
// Wait for the accept call to complete
//
return AcceptWork ( s, TRUE, address, address_len );
}
/**
Non blocking version of ::accept.
@param [in] s Socket file descriptor returned from ::socket.
@param [in] address Address of a buffer to receive the remote network address.
@param [in, out] address_len Address of a buffer containing the Length in bytes
of the remote network address buffer. Upon return,
contains the length of the remote network address.
@return This routine returns zero if successful and -1 when an error occurs.
In the case of an error, ::errno contains more details.
**/
int
AcceptNB (
int s,
struct sockaddr * address,
socklen_t * address_len
)
{
//
// Attempt to accept a network connection
//
return AcceptWork ( s, FALSE, address, address_len );
}
|
