Remove obsolete, never-implemented XSI STREAMS declarations

The stub implementations are turned into compat symbols.

Linux actually has two reserved system call numbers (for getpmsg
and putpmsg), but these system calls have never been implemented,
and there are no plans to implement them, so this patch replaces
the wrappers with the generic stubs.

According to <https://bugzilla.redhat.com/show_bug.cgi?id=436349>,
the presence of the XSI STREAMS declarations is a minor portability
hazard because they are not actually implemented.

This commit does not change the TIRPC support code in
sunrpc/rpc_svcout.c.  It uses additional XTI functionality and
therefore never worked with glibc.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 0 insertions, 13 deletions

diff --git a/manual/terminal.texi b/manual/terminal.texi
index d830baa..7293bfb 100644
--- a/manual/terminal.texi
+++ b/manual/terminal.texi
@@ -2117,12 +2117,6 @@ at @var{buf} with length @var{len}.
 This function is a GNU extension.
 @end deftypefun
 
-@strong{Portability Note:} On @w{System V} derived systems, the file
-returned by the @code{ptsname} and @code{ptsname_r} functions may be
-STREAMS-based, and therefore require additional processing after opening
-before it actually behaves as a pseudo terminal.
-@c FIXME: xref STREAMS
-
 Typical usage of these functions is illustrated by the following example:
 @smallexample
 int
@@ -2145,13 +2139,6 @@ open_pty_pair (int *amaster, int *aslave)
   if (slave == -1)
     goto close_master;
 
-  if (isastream (slave))
-    @{
-      if (ioctl (slave, I_PUSH, "ptem") < 0
-          || ioctl (slave, I_PUSH, "ldterm") < 0)
-        goto close_slave;
-    @}
-
   *amaster = master;
   *aslave = slave;
   return 1;