getsockname man page on FreeBSD

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

     getsockname — get socket name

     Standard C Library (libc, -lc)

     #include <sys/types.h>
     #include <sys/socket.h>

     getsockname(int s, struct sockaddr * restrict name,
	 socklen_t * restrict namelen);

     The getsockname() system call returns the current name for the specified
     socket.  The namelen argument should be initialized to indicate the
     amount of space pointed to by name.  On return it contains the actual
     size of the name returned (in bytes).

     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.

     The call succeeds unless:

     [EBADF]		The argument s is not a valid descriptor.

     [ECONNRESET]	The connection has been reset by the peer.

     [ENOTSOCK]		The argument s is a file, not a socket.

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

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

     bind(2), getpeername(2), socket(2)

     The getsockname() system call appeared in 4.2BSD.

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

BSD				 June 4, 1993				   BSD

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