streams: put-buf and fill-buf functions.

* stream.h (struct strm_ops): New function pointer members,
put_buf and fill_buf.
(strm_ops_init): Two new parameters in macro.
(put_buf, fill_buf): Declared.

* stream.c (unimpl_put_buf, unimpl_fill_buf, generic_put_buf,
generic_fill_buf): New static functions.
(fill_stream_ops): Default new fill_buf and fill_buf virtual
functions intelligently based on whether get_byte and put_byte
are available.
(stdio_put_buf, stdio_fill_buf): New static functions.
(stdio_ops, tail_ops, pipe_ops, dir_ops, string_in_ops,
byte_in_ops, strlist_in_ops, string_out_ops, strlist_out_ops,
cat_stream_ops): Add arguments to strm_ops_init macro for
get_buf and fill_buf.
(delegate_put_buf, delegate_fill_buf): New  static functions.
(record_adapter_ops): Add arguments to strm_ops_init macro
for get_buf and fill_buf.
(put_buf, fill_buf): New functions.
(stream_init): Register put-buf and fill-buf intrinsics.

* socket.c (dgram_strm_ops): Add arguments to strm_ops_init
macro call.

* syslog.c (syslog_strm_ops): Likewise.

1 files changed, 2 insertions, 0 deletions

diff --git a/socket.c b/socket.c
index 51db01a9..6b583f1d 100644
--- a/socket.c
+++ b/socket.c
@@ -658,6 +658,8 @@ static_def(struct strm_ops dgram_strm_ops =
                 dgram_get_byte,
                 dgram_unget_char,
                 dgram_unget_byte,
+                0,
+                0,
                 dgram_close,
                 dgram_flush,
                 0,