getpeername(2) [bsd man page]

GETPEERNAME(2)							System Calls Manual						    GETPEERNAME(2)

NAME

       getpeername - get name of connected peer

SYNOPSIS

       getpeername(s, name, namelen)
       int s;
       struct sockaddr *name;
       int *namelen;

DESCRIPTION

       Getpeername  returns  the  name	of  the peer connected to socket s.  The namelen parameter 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 name is truncated if the buffer pro-
       vided is too small.

DIAGNOSTICS

       A 0 is returned if the call succeeds, -1 if it fails.

ERRORS

       The call succeeds unless:

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

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

       [ENOTCONN]     The socket is not connected.

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

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

SEE ALSO

       accept(2), bind(2), socket(2), getsockname(2)

4.2 Berkeley Distribution					   May 13, 1986 						    GETPEERNAME(2)

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

NAME

       getpeername - get name of connected peer socket

SYNOPSIS

       #include <sys/socket.h>

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

DESCRIPTION

       Getpeername  returns  the  name	of  the peer connected to socket s.  The namelen parameter 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 name is truncated if the buffer pro-
       vided is too small.

RETURN VALUE

       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS

       EBADF  The argument s is not a valid descriptor.

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

       ENOTCONN
	      The socket is not connected.

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

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

CONFORMING TO

       SVr4, 4.4BSD (the getpeername function call first appeared in 4.2BSD).

NOTE

       The  third  argument  of  getpeername  is  in reality an `int *' (and this is what BSD 4.* and libc4 and libc5 have).  Some POSIX confusion
       resulted in the present socklen_t.  The draft standard has not been adopted yet, but glibc2 already follows it and also has socklen_t.  See
       also accept(2).

SEE ALSO

       accept(2), bind(2), getsockname(2)

BSD Man Page							    1993-07-30							    GETPEERNAME(2)