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* [newlib-cygwin] Cygwin: FIFO: use FILE_PIPE_REJECT_REMOTE_CLIENTS flag
@ 2019-12-22 21:00 Ken Brown
0 siblings, 0 replies; only message in thread
From: Ken Brown @ 2019-12-22 21:00 UTC (permalink / raw)
To: cygwin-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=3bc79b275ef2ac0a2bb6805183e62baa29b6a1a2
commit 3bc79b275ef2ac0a2bb6805183e62baa29b6a1a2
Author: Ken Brown <kbrown@cornell.edu>
Date: Sat Dec 21 17:53:52 2019 -0500
Cygwin: FIFO: use FILE_PIPE_REJECT_REMOTE_CLIENTS flag
Add that flag to the pipe type argument when creating the Windows
named pipe. And add a definition of that flag to ntdll.h (copied from
/usr/include/w32api/ddk/ntifs.h).
Diff:
---
winsup/cygwin/fhandler_fifo.cc | 3 ++-
winsup/cygwin/ntdll.h | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/winsup/cygwin/fhandler_fifo.cc b/winsup/cygwin/fhandler_fifo.cc
index 92797ce..fd82230 100644
--- a/winsup/cygwin/fhandler_fifo.cc
+++ b/winsup/cygwin/fhandler_fifo.cc
@@ -184,7 +184,8 @@ fhandler_fifo::create_pipe_instance (bool first)
timeout.QuadPart = -500000;
status = NtCreateNamedPipeFile (&ph, access, &attr, &io, sharing,
first ? FILE_CREATE : FILE_OPEN, 0,
- FILE_PIPE_MESSAGE_TYPE,
+ FILE_PIPE_MESSAGE_TYPE
+ | FILE_PIPE_REJECT_REMOTE_CLIENTS,
FILE_PIPE_MESSAGE_MODE,
nonblocking, max_instances,
DEFAULT_PIPEBUFSIZE, DEFAULT_PIPEBUFSIZE,
diff --git a/winsup/cygwin/ntdll.h b/winsup/cygwin/ntdll.h
index e19cc8a..1c07d02 100644
--- a/winsup/cygwin/ntdll.h
+++ b/winsup/cygwin/ntdll.h
@@ -557,7 +557,8 @@ enum
enum
{
FILE_PIPE_BYTE_STREAM_TYPE = 0,
- FILE_PIPE_MESSAGE_TYPE = 1
+ FILE_PIPE_MESSAGE_TYPE = 1,
+ FILE_PIPE_REJECT_REMOTE_CLIENTS = 2
};
typedef struct _FILE_PIPE_PEEK_BUFFER {
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2019-12-22 21:00 [newlib-cygwin] Cygwin: FIFO: use FILE_PIPE_REJECT_REMOTE_CLIENTS flag Ken Brown
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