Fix: allow racy tracepoint string input from kernel and userspace

[lttng-modules.git] / lttng-ring-buffer-metadata-client.h

diff --git a/lttng-ring-buffer-metadata-client.h b/lttng-ring-buffer-metadata-client.h
index 5c8a1df9e1828e76f432c211697d36024b523d80..f077f4f6c523b56f2c20337a893afa25827037eb 100644 (file)
--- a/lttng-ring-buffer-metadata-client.h
+++ b/lttng-ring-buffer-metadata-client.h
@@ -325,6 +325,13 @@ void lttng_event_memset(struct lib_ring_buffer_ctx *ctx,
        lib_ring_buffer_memset(&client_config, ctx, c, len);
 }
 
+static
+void lttng_event_strcpy(struct lib_ring_buffer_ctx *ctx, const char *src,
+               size_t len)
+{
+       lib_ring_buffer_strcpy(&client_config, ctx, src, len, '#');
+}
+
 static
 size_t lttng_packet_avail_size(struct channel *chan)
                             
@@ -383,6 +390,7 @@ static struct lttng_transport lttng_relay_transport = {
                .event_write_from_user = lttng_event_write_from_user,
                .event_memset = lttng_event_memset,
                .event_write = lttng_event_write,
+               .event_strcpy = lttng_event_strcpy,
                .packet_avail_size = lttng_packet_avail_size,
                .get_writer_buf_wait_queue = lttng_get_writer_buf_wait_queue,
                .get_hp_wait_queue = lttng_get_hp_wait_queue,