Bugzilla bug 121872: define _PR_MD_LISTEN as a function so that we can set

error codes if listen() fails.  The patch is contributed by Javier
Pedemonte <pedemont@us.ibm.com>.
Modified files: _os2.h _os2_errors.h os2sock.c

nsprpub/pr/include/md/_os2.h

@@ -258,7 +258,7 @@ extern void _MD_MakeNonblock(PRFileDesc *f);
 #define _MD_INIT_FD_INHERITABLE       (_PR_MD_INIT_FD_INHERITABLE)
 #define _MD_QUERY_FD_INHERITABLE      (_PR_MD_QUERY_FD_INHERITABLE)
 #define _MD_SHUTDOWN                  (_PR_MD_SHUTDOWN)
-#define _MD_LISTEN(s, backlog)        listen(s->secret->md.osfd,backlog)
+#define _MD_LISTEN                    _PR_MD_LISTEN
 extern PRInt32 _MD_CloseSocket(PRInt32 osfd);
 #define _MD_CLOSE_SOCKET              _MD_CloseSocket
 #define _MD_SENDTO                    (_PR_MD_SENDTO)

nsprpub/pr/include/md/_os2_errors.h

@@ -40,6 +40,9 @@
   #include <assert.h>
 #endif  
 
+NSPR_API(void) _MD_os2_map_default_error(PRInt32 err);
+#define	_PR_MD_MAP_DEFAULT_ERROR	_MD_os2_map_default_error
+
 NSPR_API(void) _MD_os2_map_opendir_error(PRInt32 err);
 #define	_PR_MD_MAP_OPENDIR_ERROR	_MD_os2_map_opendir_error
 

nsprpub/pr/src/md/os2/os2sock.c

@@ -357,6 +357,19 @@ _PR_MD_BIND(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen)
 }
 
 
+PRInt32
+_PR_MD_LISTEN(PRFileDesc *fd, PRIntn backlog)
+{
+    PRInt32 rv, err;
+    rv = listen(fd->secret->md.osfd, backlog);
+    if (rv < 0)  {
+        err = sock_errno();
+        _PR_MD_MAP_DEFAULT_ERROR(err);
+    }
+    return(rv);
+}
+
+
 PRInt32
 _PR_MD_RECV(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags, 
             PRIntervalTime timeout)