X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fkernel-ctl%2Fkernel-ctl.c;h=6a256fefd00fa06b107c61aff78ea09151e63627;hp=839a8600e2a3a94ca3eab38b03863138225758fa;hb=f22dd89135f6b1749cd75735f04e3cb309da12c1;hpb=b812e5ca9073ddac9cf8db747eb6cf9bea78b85a

diff --git a/src/common/kernel-ctl/kernel-ctl.c b/src/common/kernel-ctl/kernel-ctl.c
index 839a8600e..6a256fefd 100644
--- a/src/common/kernel-ctl/kernel-ctl.c
+++ b/src/common/kernel-ctl/kernel-ctl.c
@@ -89,10 +89,12 @@ int kernctl_create_session(int fd)
 /* open the metadata global channel */
 int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
 {
-	struct lttng_kernel_old_channel old_channel;
 	struct lttng_kernel_channel channel;
 
 	if (lttng_kernel_use_old_abi) {
+		struct lttng_kernel_old_channel old_channel;
+
+		memset(&old_channel, 0, sizeof(old_channel));
 		old_channel.overwrite = chops->overwrite;
 		old_channel.subbuf_size = chops->subbuf_size;
 		old_channel.num_subbuf = chops->num_subbuf;
@@ -111,6 +113,7 @@ int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
 			        &old_channel);
 	}
 
+	memset(&channel, 0, sizeof(channel));
 	channel.overwrite = chops->overwrite;
 	channel.subbuf_size = chops->subbuf_size;
 	channel.num_subbuf = chops->num_subbuf;
@@ -246,6 +249,7 @@ int kernctl_create_event(int fd, struct lttng_kernel_event *ev)
 	if (lttng_kernel_use_old_abi) {
 		struct lttng_kernel_old_event old_event;
 
+		memset(&old_event, 0, sizeof(old_event));
 		memcpy(old_event.name, ev->name, sizeof(old_event.name));
 		old_event.instrumentation = ev->instrumentation;
 		switch (ev->instrumentation) {
@@ -283,6 +287,7 @@ int kernctl_add_context(int fd, struct lttng_kernel_context *ctx)
 	if (lttng_kernel_use_old_abi) {
 		struct lttng_kernel_old_context old_ctx;
 
+		memset(&old_ctx, 0, sizeof(old_ctx));
 		old_ctx.ctx = ctx->ctx;
 		/* only type that uses the union */
 		if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) {
@@ -403,6 +408,11 @@ int kernctl_buffer_flush(int fd)
 	return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH);
 }
 
+int kernctl_buffer_flush_empty(int fd)
+{
+	return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH_EMPTY);
+}
+
 /* returns the version of the metadata. */
 int kernctl_get_metadata_version(int fd, uint64_t *version)
 {
@@ -470,6 +480,16 @@ int kernctl_snapshot(int fd)
 	return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT);
 }
 
+/*
+ * Get a snapshot of the current ring buffer producer and consumer positions,
+ * regardless of whether or not the two positions are contained within the
+ * same sub-buffer.
+ */
+int kernctl_snapshot_sample_positions(int fd)
+{
+	return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS);
+}
+
 /* Get the consumer position (iteration start) */
 int kernctl_snapshot_get_consumed(int fd, unsigned long *pos)
 {