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1 | /** @file\r | |
2 | Implement the accept 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 | Worker routine for ::Accept and ::AcceptNB\r | |
20 | \r | |
21 | @param [in] s Socket file descriptor returned from ::socket.\r | |
22 | \r | |
23 | @param [in] bBlocking TRUE if this is a blocking call\r | |
24 | @param [in] address Address of a buffer to receive the remote network address.\r | |
25 | \r | |
26 | @param [in, out] address_len Address of a buffer containing the Length in bytes\r | |
27 | of the remote network address buffer. Upon return,\r | |
28 | contains the length of the remote network address.\r | |
29 | \r | |
30 | @returns ::accept returns zero if successful and -1 when an error occurs.\r | |
31 | In the case of an error, errno contains more details.\r | |
32 | \r | |
33 | **/\r | |
34 | int\r | |
35 | AcceptWork (\r | |
36 | int s,\r | |
37 | BOOLEAN bBlocking,\r | |
38 | struct sockaddr * address,\r | |
39 | socklen_t * address_len\r | |
40 | )\r | |
41 | {\r | |
42 | INT32 NewSocketFd;\r | |
43 | struct __filedes * pDescriptor;\r | |
44 | EFI_SOCKET_PROTOCOL * pNewSocket;\r | |
45 | EFI_SOCKET_PROTOCOL * pSocketProtocol;\r | |
46 | EFI_STATUS Status;\r | |
47 | \r | |
48 | //\r | |
49 | // Assume failure\r | |
50 | //\r | |
51 | NewSocketFd = -1;\r | |
52 | \r | |
53 | //\r | |
54 | // Locate the context for this socket\r | |
55 | //\r | |
56 | pSocketProtocol = BslFdToSocketProtocol ( s,\r | |
57 | &pDescriptor,\r | |
58 | &errno );\r | |
59 | if ( NULL != pSocketProtocol ) {\r | |
60 | //\r | |
61 | // TODO: Update bBlocking by anding with check for NON_BLOCKING\r | |
62 | //\r | |
63 | \r | |
64 | //\r | |
65 | // Attempt to accept a new network connection\r | |
66 | //\r | |
67 | do {\r | |
68 | Status = pSocketProtocol->pfnAccept ( pSocketProtocol,\r | |
69 | address,\r | |
70 | address_len,\r | |
71 | &pNewSocket,\r | |
72 | &errno );\r | |
73 | } while ( bBlocking && ( EFI_NOT_READY == Status ));\r | |
74 | \r | |
75 | //\r | |
76 | // Convert the protocol to a socket\r | |
77 | //\r | |
78 | NewSocketFd = BslSocketProtocolToFd ( pNewSocket, &errno );\r | |
79 | if ( -1 == NewSocketFd ) {\r | |
80 | //\r | |
81 | // Close the socket\r | |
82 | //\r | |
83 | BslSocketCloseWork ( pNewSocket, NULL );\r | |
84 | }\r | |
85 | }\r | |
86 | \r | |
87 | //\r | |
88 | // Return the new socket file descriptor\r | |
89 | //\r | |
90 | return NewSocketFd;\r | |
91 | }\r | |
92 | \r | |
93 | \r | |
94 | /**\r | |
95 | Accept a network connection.\r | |
96 | \r | |
97 | The ::accept routine waits for a network connection to the socket.\r | |
98 | It is able to return the remote network address to the caller if\r | |
99 | requested. The\r | |
100 | <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/accept.html">POSIX</a>\r | |
101 | documentation is available online.\r | |
102 | \r | |
103 | @param [in] s Socket file descriptor returned from ::socket.\r | |
104 | \r | |
105 | @param [in] address Address of a buffer to receive the remote network address.\r | |
106 | \r | |
107 | @param [in, out] address_len Address of a buffer containing the Length in bytes\r | |
108 | of the remote network address buffer. Upon return,\r | |
109 | contains the length of the remote network address.\r | |
110 | \r | |
111 | @returns ::accept returns zero if successful and -1 when an error occurs.\r | |
112 | In the case of an error, errno contains more details.\r | |
113 | \r | |
114 | **/\r | |
115 | int\r | |
116 | accept (\r | |
117 | int s,\r | |
118 | struct sockaddr * address,\r | |
119 | socklen_t * address_len\r | |
120 | )\r | |
121 | {\r | |
122 | //\r | |
123 | // Wait for the accept call to complete\r | |
124 | //\r | |
125 | return AcceptWork ( s, TRUE, address, address_len );\r | |
126 | }\r | |
127 | \r | |
128 | \r | |
129 | /**\r | |
130 | Non blocking version of accept.\r | |
131 | \r | |
132 | See ::accept\r | |
133 | \r | |
134 | @param [in] s Socket file descriptor returned from ::socket.\r | |
135 | \r | |
136 | @param [in] address Address of a buffer to receive the remote network address.\r | |
137 | \r | |
138 | @param [in, out] address_len Address of a buffer containing the Length in bytes\r | |
139 | of the remote network address buffer. Upon return,\r | |
140 | contains the length of the remote network address.\r | |
141 | \r | |
142 | @returns This routine returns zero if successful and -1 when an error occurs.\r | |
143 | In the case of an error, errno contains more details.\r | |
144 | \r | |
145 | **/\r | |
146 | int\r | |
147 | AcceptNB (\r | |
148 | int s,\r | |
149 | struct sockaddr * address,\r | |
150 | socklen_t * address_len\r | |
151 | )\r | |
152 | {\r | |
153 | //\r | |
154 | // Attempt to accept a network connection\r | |
155 | //\r | |
156 | return AcceptWork ( s, FALSE, address, address_len );\r | |
157 | }\r |