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)