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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | NOTES | SEE ALSO | COLOPHON |
GETSOCKNAME(2) Linux Programmer's Manual GETSOCKNAME(2)
getsockname - get socket name
#include <sys/socket.h>
int getsockname(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
getsockname() returns the current address to which the socket sockfd
is bound, in the buffer pointed to by addr. The addrlen argument
should be initialized to indicate the amount of space (in bytes)
pointed to by addr. On return it contains the actual size of the
socket address.
The returned address is truncated if the buffer provided is too
small; in this case, addrlen will return a value greater than was
supplied to the call.
On success, zero is returned. On error, -1 is returned, and errno is
set appropriately.
EBADF The argument sockfd is not a valid file descriptor.
EFAULT The addr argument points to memory not in a valid part of the
process address space.
EINVAL addrlen is invalid (e.g., is negative).
ENOBUFS
Insufficient resources were available in the system to perform
the operation.
ENOTSOCK
The file descriptor sockfd does not refer to a socket.
POSIX.1-2001, POSIX.1-2008, SVr4, 4.4BSD (getsockname() first
appeared in 4.2BSD).
For background on the socklen_t type, see accept(2).
bind(2), socket(2), getifaddrs(3), ip(7), socket(7), unix(7)
This page is part of release 4.12 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2016-12-12 GETSOCKNAME(2)
Pages that refer to this page: bind(2), connect(2), getpeername(2), socket(2), socketcall(2), syscalls(2), bindresvport(3), getifaddrs(3), getnameinfo(3), if_nameindex(3), signal-safety(7), socket(7), unix(7)