| Rev | Author | # | Line |
|---|---|---|---|
| 1 | perry | 1 | !!NAME |
| 2 | PerryLorier | 2 | getsockname - get socket name |
| 1 | perry | 3 | |
| 4 | !!SYNOPSIS | ||
| 2 | PerryLorier | 5 | __#include <sys/socket.h>__ |
| 1 | perry | 6 | |
| 2 | PerryLorier | 7 | __int getsockname(int s , struct sockaddr * name , socklen_t * namelen )__ |
| 1 | perry | 8 | !!DESCRIPTION |
| 2 | PerryLorier | 9 | getsockname(2) returns the current ''name'' for the specified socket. The ''namelen'' parameter should be initialized to indicate the amount of space pointed to by ''name''. On return it contains the actual size of the name returned (in bytes). |
| 1 | perry | 10 | |
| 11 | !!RETURN VALUE | ||
| 2 | PerryLorier | 12 | On success, zero is returned. On error, -1 is returned, and ''errno'' is set appropriately. |
| 1 | perry | 13 | |
| 14 | !!ERRORS | ||
| 2 | PerryLorier | 15 | ;[EBADF]: The argument ''s'' is not a valid descriptor. |
| 16 | ;[ENOTSOCK]: The argument ''s'' is a file, not a socket. | ||
| 17 | ;[ENOBUFS]: Insufficient resources were available in the system to perform the operation. | ||
| 18 | ;[EFAULT]: The ''name'' parameter points to memory not in a valid part of the process address space. | ||
| 1 | perry | 19 | |
| 20 | !!CONFORMING TO | ||
| 2 | PerryLorier | 21 | SVr4, 4.4BSD (the getsockname(2) function call appeared in 4.2BSD). SVr4 documents additional [ENOMEM] and [ENOSR] error codes. |
| 1 | perry | 22 | |
| 23 | !!NOTE | ||
| 2 | PerryLorier | 24 | The third argument of getsockname(2) is in reality an `int *' (and this is what BSD 4.* and libc4 and libc5 have). Some POSIX confusion resulted in the present socklen_t. The draft standard has not been adopted yet, but glibc2 already follows it and also has socklen_t. See also accept(2). |
| 3 | NickJohnson | 25 | |
| 4 | NickJohnson | 26 | [NickJohnson] adds: If getsockname is called on an unbound inet socket, ((struct sockaddr_in *)name)->sin_family will be AF_INET, and ((struct sockaddr_in *)name)->sin_addr.s_addr will be INADDR_ANY. |
| 1 | perry | 27 | |
| 28 | !!SEE ALSO | ||
| 29 | bind(2), socket(2) |
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