Subject: Re: Strange behavious of getpeername(2) on pipe
To: None <>
From: Martin J. Laubach <>
List: tech-kern
Date: 03/27/2001 11:12:13
| last i tried, getpeername() failed on NetBSD in this case.  can you try
| a C version to check that it isn't some perl lossage?

  The program below (I hope I didn't goof up there) doesn't return
any error either:

laubach1:34 [/tmp] % ./x
getpeername0 returned 0
getpeername1 returned 0


---- cut here ----
#include <unistd.h>
#include <stdio.h>
#include <sys/socket.h>

   struct sockaddr sa;
   int f[2];
   int i, l;

   if(pipe(f) != 0)
      err(1, "pipe");

   l = sizeof(sa);
   if((i = getpeername(f[0], &sa, &l)) != 0)
      err(1, "getpeername0");

   printf("getpeername0 returned %d\n", i);

   l = sizeof(sa);
   if((i = getpeername(f[1], &sa, &l)) != 0)
      err(1, "getpeername1");

   printf("getpeername1 returned %d\n", i);