getsockname(2) [mojave man page]

GETSOCKNAME(2)						      BSD System Calls Manual						    GETSOCKNAME(2)

NAME

     getsockname -- get socket name

SYNOPSIS

     #include <sys/socket.h>

     int
     getsockname(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len);

DESCRIPTION

     The getsockname() function returns the current address for the specified socket.

     The address_len parameter should be initialized to indicate the amount of space pointed to by address.  On return it contains the actual size
     of the address returned (in bytes).

     The address is truncated if the buffer provided is too small.

RETURN VALUES

     The getsockname() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to
     indicate the error.

ERRORS

     The getsockname() system call will succeed unless:

     [EBADF]		The argument socket is not a valid file descriptor.

     [EFAULT]		The address parameter points to memory not in a valid part of the process address space.

     [EINVAL]		socket has been shut down.

     [ENOBUFS]		Insufficient resources were available in the system to perform the operation.

     [ENOTSOCK] 	The argument socket is not a socket (e.g., a plain file).

     [EOPNOTSUPP]	getsockname() is not supported for the protocol in use by socket.

SEE ALSO

     bind(2), socket(2)

BUGS

     Names bound to sockets in the UNIX domain are inaccessible; getsockname() returns a zero-length address.

HISTORY

     The getsockname() call appeared in 4.2BSD.

4.2 Berkeley Distribution					   June 4, 1993 					 4.2 Berkeley Distribution

getsockname(3XNET)				   X/Open Networking Services Library Functions 				getsockname(3XNET)

NAME

       getsockname - get the socket name

SYNOPSIS

       cc [ flag ... ] file ... -lxnet [ library ... ]
       #include <sys/socket.h>

       int getsockname(int socket, struct sockaddr *restrict address,
	    socklen_t *restrict address_len);

DESCRIPTION

       The  getsockname() function retrieves the locally-bound name of the specified socket, stores this address in the sockaddr structure pointed
       to by the address argument, and stores the length of this address in the object pointed to by the address_len argument.

       If the actual length of the address is greater than the length of the supplied sockaddr structure, the stored address will be truncated.

       If the socket has not been bound to a local name, the value stored in the object pointed to by address is unspecified.

RETURN VALUES

       Upon successful completion, 0 is returned, the address argument points to the address of the socket, and the address_len argument points to
       the length of the address.  Otherwise, -1 is returned and errno is set to indicate the error.

ERRORS

       The getsockname() function will fail:

       EBADF	     The socket argument is not a valid file descriptor.

       EFAULT	     The  address or  address_len parameter can not be accessed or written.

       ENOTSOCK      The socket argument does not refer to a socket.

       EOPNOTSUPP    The operation is not supported for this socket's protocol.

       The getsockname() function may fail if:

       EINVAL	  The socket has been shut down.

       ENOBUFS	  Insufficient resources were available in the system to complete the call.

       ENOSR	  There were insufficient STREAMS resources available for the operation to complete.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       accept(3XNET), bind(3XNET), getpeername(3XNET), socket(3XNET) attributes(5), standards(5)

SunOS 5.11							    10 Jun 2002 						getsockname(3XNET)