getpeername man page on Mandriva

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GETPEERNAME(2)		   Linux Programmer's Manual		GETPEERNAME(2)

NAME
       getpeername - get name of connected peer socket

SYNOPSIS
       #include <sys/socket.h>

       int getpeername(int sockfd, struct sockaddr *addr, socklen_t *addrlen);

DESCRIPTION
       getpeername()  returns  the address of the peer connected to the socket
       sockfd, in the buffer pointed to by addr.  The addrlen argument	should
       be  initialized to indicate the amount of space pointed to by addr.  On
       return it contains the actual size of the  name	returned  (in  bytes).
       The name is truncated if the buffer provided is too small.

       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 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.

       ENOTCONN
	      The socket is not connected.

       ENOTSOCK
	      The argument sockfd is a file, not a socket.

CONFORMING TO
       SVr4,  4.4BSD  (the  getpeername()  function  call  first  appeared  in
       4.2BSD), POSIX.1-2001.

NOTES
       The third argument of getpeername() is in reality an int * (and this is
       what 4.x BSD and libc4 and libc5 have).	Some POSIX confusion  resulted
       in the present socklen_t, also used by glibc.  See also accept(2).

SEE ALSO
       accept(2), bind(2), getsockname(2), ip(7), socket(7), unix(7)

COLOPHON
       This  page  is  part of release 3.24 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

Linux				  2008-12-03			GETPEERNAME(2)
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