GETSOCKNAME
Section: Linux Programmer's Manual (2)
Updated: 2017-09-15
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NAME
getsockname - get socket name
SYNOPSIS
#include <sys/socket.h>
int getsockname(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
DESCRIPTION
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.
RETURN VALUE
On success, zero is returned.
On error, -1 is returned, and
errno
is set appropriately.
ERRORS
- 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.
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, SVr4, 4.4BSD
(
getsockname()
first appeared in 4.2BSD).
NOTES
For background on the
socklen_t
type, see
accept(2).
SEE ALSO
bind(2),
socket(2),
getifaddrs(3),
ip(7),
socket(7),
unix(7)
COLOPHON
This page is part of release 4.13 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/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- CONFORMING TO
-
- NOTES
-
- SEE ALSO
-
- COLOPHON
-
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