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d7ce7006 | 1 | /** @file\r |
2 | Implement the listen 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 | Establish the known port to listen for network connections.\r | |
20 | \r | |
21 | The ::listen routine places the port into a state that enables connection\r | |
22 | attempts. Connections are placed into FIFO order in a queue to be serviced\r | |
23 | by the application. The application calls the ::accept routine to remove\r | |
24 | the next connection from the queue and get the associated socket. The\r | |
25 | <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/listen.html">POSIX</a>\r | |
26 | documentation for the bind routine is available online for reference.\r | |
27 | \r | |
28 | @param [in] s Socket file descriptor returned from ::socket.\r | |
29 | \r | |
30 | @param [in] backlog backlog specifies the maximum FIFO depth for the connections\r | |
31 | waiting for the application to call accept. Connection attempts\r | |
32 | received while the queue is full are refused.\r | |
33 | \r | |
7dc13291 | 34 | @return The listen routine returns zero (0) if successful and -1 upon failure.\r |
d7ce7006 | 35 | \r |
36 | **/\r | |
37 | int\r | |
38 | listen (\r | |
39 | IN int s,\r | |
40 | IN int backlog\r | |
41 | )\r | |
42 | {\r | |
43 | int ListenStatus;\r | |
44 | EFI_SOCKET_PROTOCOL * pSocketProtocol;\r | |
45 | EFI_STATUS Status;\r | |
46 | \r | |
47 | //\r | |
48 | // Locate the context for this socket\r | |
49 | //\r | |
50 | pSocketProtocol = BslFdToSocketProtocol ( s, NULL, &errno );\r | |
51 | if ( NULL != pSocketProtocol ) {\r | |
52 | //\r | |
53 | // Enable connections on the known port\r | |
54 | //\r | |
55 | Status = pSocketProtocol->pfnListen ( pSocketProtocol,\r | |
56 | backlog,\r | |
57 | &errno );\r | |
58 | }\r | |
59 | \r | |
60 | //\r | |
61 | // Return the operation stauts\r | |
62 | //\r | |
63 | ListenStatus = ( 0 == errno ) ? 0 : -1;\r | |
64 | return ListenStatus;\r | |
65 | }\r |