s4 torture: Add new test to create a file with a lot of streams

This tests how streaminfo deals with large buffers

smbclient seems to have problems when the buffer size approaches the
max data size.  Also smbclient exposes no way to specify the max data
size that is sent in a trans2 request.  Instead it hardcodes in a much
larger max than windows uses.  For these reasons this test isn't
actually run, but is more of a reference for how windows handles
streaminfo buffers.

1 files changed, 45 insertions, 0 deletions

diff --git a/source4/torture/raw/streams.c b/source4/torture/raw/streams.c
index 6105fb230f..0622e0809d 100644
--- a/source4/torture/raw/streams.c
+++ b/source4/torture/raw/streams.c
@@ -1492,6 +1492,49 @@ static bool test_stream_create_disposition(struct torture_context *tctx,
 	return ret;
 }
 
+/* Test streaminfo with enough streams on a file to fill up the buffer.  */
+static bool test_stream_large_streaminfo(struct torture_context *tctx,
+					 struct smbcli_state *cli,
+					 TALLOC_CTX *mem_ctx)
+{
+#define LONG_STREAM_SIZE 2
+	char *lstream_name;
+	const char *fname = BASEDIR "\\stream.txt";
+	const char *fname_stream;
+	NTSTATUS status;
+	bool ret = true;
+	int i;
+	union smb_fileinfo finfo;
+
+	lstream_name = talloc_array(mem_ctx, char, LONG_STREAM_SIZE);
+
+	for (i = 0; i < LONG_STREAM_SIZE - 1; i++) {
+		lstream_name[i] = (char)('a' + i%26);
+	}
+	lstream_name[LONG_STREAM_SIZE - 1] = '\0';
+
+	printf("(%s) Creating a file with a lot of streams\n", __location__);
+	for (i = 0; i < 10000; i++) {
+		fname_stream = talloc_asprintf(mem_ctx, "%s:%s%d", fname,
+					       lstream_name, i);
+		ret = create_file_with_stream(tctx, cli, mem_ctx, fname,
+					      fname_stream);
+		if (!ret) {
+			goto done;
+		}
+	}
+
+	finfo.generic.level = RAW_FILEINFO_STREAM_INFO;
+	finfo.generic.in.file.path = fname;
+
+	status = smb_raw_pathinfo(cli->tree, mem_ctx, &finfo);
+	CHECK_STATUS(status, STATUS_BUFFER_OVERFLOW);
+
+ done:
+	smbcli_unlink(cli->tree, fname);
+	return ret;
+}
+
 /* 
    basic testing of streams calls
 */
@@ -1523,6 +1566,8 @@ bool torture_raw_streams(struct torture_context *torture,
 	smb_raw_exit(cli->session);
 	ret &= test_stream_create_disposition(torture, cli, torture);
 	smb_raw_exit(cli->session);
+	/* ret &= test_stream_large_streaminfo(torture, cli, torture); */
+/* 	smb_raw_exit(cli->session); */
 
 	smbcli_deltree(cli->tree, BASEDIR);