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Manual for getpeername - man 2 getpeername

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



NAME
       getpeername(1,2) - get name of connected peer socket(2,7,n)

SYNOPSIS
       #include <sys/socket.h>

       int getpeername(1,2)(int s, struct sockaddr *name, socklen_t *namelen);

DESCRIPTION
       Getpeername  returns  the  name of the peer connected to socket(2,7,n) 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(1,8) bytes).  The name is truncated if(3,n) the buffer  provided  is
       too small.

RETURN VALUE
       On  success,  zero is returned.  On error(8,n), -1 is returned, and errno is
       set(7,n,1 builtins) appropriately.

ERRORS
       EBADF  The argument s is not a valid descriptor.

       EFAULT The name parameter points to memory not in(1,8) a valid part  of  the
              process address space.

       ENOBUFS
              Insufficient  resources  were available in(1,8) the system to perform
              the operation.

       ENOTCONN
              The socket(2,7,n) is not connected.

       ENOTSOCK
              The argument s is a file(1,n), not a socket.

CONFORMING TO
       SVr4, 4.4BSD (the getpeername(1,2) function call first appeared in(1,8)  4.2BSD).

NOTE
       The third argument of getpeername(1,2) is in(1,8) reality an `int *' (and this is
       what BSD 4.* and libc4 and libc5 have).  Some POSIX confusion  resulted
       in(1,8) the present socklen_t, also used by glibc.  See also accept(2,8)(2).

SEE ALSO
       accept(2,8)(2), bind(2,n,1 builtins)(2), getsockname(2)



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

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