[PATCH v2 2/6] nonblock: support Windows

From

Jeff King <peff@peff.net>

Date

Aug 17, 2022, 06:05 UTC

Message-ID

<YvyFJcqyBGXMtoxZ@coredump.intra.peff.net>

In-Reply-To

<YvyE1RDFVAg4uQo1@coredump.intra.peff.net>

From: René Scharfe <l.s.r@web.de>

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Jeff King <peff@peff.net>
---
 compat/nonblock.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/compat/nonblock.c b/compat/nonblock.c
index b08105a21d..9694ebdb1d 100644
--- a/compat/nonblock.c
+++ b/compat/nonblock.c
@@ -12,6 +12,33 @@ int enable_pipe_nonblock(int fd)
 	return fcntl(fd, F_SETFL, flags);
 }
 
+#elif defined(GIT_WINDOWS_NATIVE)
+
+#include "win32.h"
+
+int enable_pipe_nonblock(int fd)
+{
+	HANDLE h = (HANDLE)_get_osfhandle(fd);
+	DWORD mode;
+	DWORD type = GetFileType(h);
+	if (type == FILE_TYPE_UNKNOWN && GetLastError() != NO_ERROR) {
+		errno = EBADF;
+		return -1;
+	}
+	if (type != FILE_TYPE_PIPE)
+		BUG("unsupported file type: %lu", type);
+	if (!GetNamedPipeHandleState(h, &mode, NULL, NULL, NULL, NULL, 0)) {
+		errno = err_win_to_posix(GetLastError());
+		return -1;
+	}
+	mode |= PIPE_NOWAIT;
+	if (!SetNamedPipeHandleState(h, &mode, NULL, NULL)) {
+		errno = err_win_to_posix(GetLastError());
+		return -1;
+	}
+	return 0;
+}
+
 #else
 
 int enable_pipe_nonblock(int fd)

-- 
2.37.2.881.gb57357660c