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

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       project,  information  about  reporting  bugs, and the latest version of this page, can be
       found at https://www.kernel.org/doc/man-pages/.