implement reading from dev-you-random for datagen.

Signed-off-by: Gediminas Jakutis <gediminas@varciai.lt>

1 files changed, 25 insertions, 0 deletions

diff --git a/src/datagen.c b/src/datagen.c
new file mode 100644
index 0000000..9efe3b3
--- /dev/null
+++ b/src/datagen.c
@@ -0,0 +1,25 @@
+#include <unistd.h>
+#include <stddef.h>
+#include <errno.h>
+#include "datagen.h"
+#include "defs.h"
+
+int gen_get(struct stream *in, size_t idx, struct entry_l *data, int tag)
+{
+	int ret = 0;
+	(void) idx;
+
+	if (tag) {
+		data->prev = 0;
+		data->next = 0;
+	}
+
+	in->prev_idx = -1;
+	ret = read(in->fd, &data->val, sizeof(data->val));
+
+	if (ret != sizeof(data->val)) {
+		ret = ret > 0 ? EAGAIN : errno;
+	}
+
+	return ret;
+}