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-rw-r--r--t/helper/test-windows-named-pipe.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/t/helper/test-windows-named-pipe.c b/t/helper/test-windows-named-pipe.c
new file mode 100644
index 0000000000..b4b752b01a
--- /dev/null
+++ b/t/helper/test-windows-named-pipe.c
@@ -0,0 +1,72 @@
+#include "test-tool.h"
+#include "git-compat-util.h"
+#include "strbuf.h"
+
+#ifdef GIT_WINDOWS_NATIVE
+static const char *usage_string = "<pipe-filename>";
+
+#define TEST_BUFSIZE (4096)
+
+int cmd__windows_named_pipe(int argc, const char **argv)
+{
+ const char *filename;
+ struct strbuf pathname = STRBUF_INIT;
+ int err;
+ HANDLE h;
+ BOOL connected;
+ char buf[TEST_BUFSIZE + 1];
+
+ if (argc < 2)
+ goto print_usage;
+ filename = argv[1];
+ if (strchr(filename, '/') || strchr(filename, '\\'))
+ goto print_usage;
+ strbuf_addf(&pathname, "//./pipe/%s", filename);
+
+ /*
+ * Create a single instance of the server side of the named pipe.
+ * This will allow exactly one client instance to connect to it.
+ */
+ h = CreateNamedPipeA(
+ pathname.buf,
+ PIPE_ACCESS_INBOUND | FILE_FLAG_FIRST_PIPE_INSTANCE,
+ PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
+ PIPE_UNLIMITED_INSTANCES,
+ TEST_BUFSIZE, TEST_BUFSIZE, 0, NULL);
+ if (h == INVALID_HANDLE_VALUE) {
+ err = err_win_to_posix(GetLastError());
+ fprintf(stderr, "CreateNamedPipe failed: %s\n",
+ strerror(err));
+ return err;
+ }
+
+ connected = ConnectNamedPipe(h, NULL)
+ ? TRUE
+ : (GetLastError() == ERROR_PIPE_CONNECTED);
+ if (!connected) {
+ err = err_win_to_posix(GetLastError());
+ fprintf(stderr, "ConnectNamedPipe failed: %s\n",
+ strerror(err));
+ CloseHandle(h);
+ return err;
+ }
+
+ while (1) {
+ DWORD nbr;
+ BOOL success = ReadFile(h, buf, TEST_BUFSIZE, &nbr, NULL);
+ if (!success || nbr == 0)
+ break;
+ buf[nbr] = 0;
+
+ write(1, buf, nbr);
+ }
+
+ DisconnectNamedPipe(h);
+ CloseHandle(h);
+ return 0;
+
+print_usage:
+ fprintf(stderr, "usage: %s %s\n", argv[0], usage_string);
+ return 1;
+}
+#endif