X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fbuffer-view.c;h=04bd1ca354f5555b4b78063ba523684cd93b52c2;hp=6f674f4a9828f857ada1a5e2fc3038d00ba343ba;hb=df62dbcd26798ca35926f8316a1b5734e825b84b;hpb=67d8e2ef48ea2cd334bf9efd90b58b976437a3cd

diff --git a/src/common/buffer-view.c b/src/common/buffer-view.c
index 6f674f4a9..04bd1ca35 100644
--- a/src/common/buffer-view.c
+++ b/src/common/buffer-view.c
@@ -18,6 +18,12 @@ struct lttng_buffer_view lttng_buffer_view_init(
 	return view;
 }
 
+LTTNG_HIDDEN
+bool lttng_buffer_view_is_valid(const struct lttng_buffer_view *view)
+{
+	return view && view->data && view->size > 0;
+}
+
 LTTNG_HIDDEN
 struct lttng_buffer_view lttng_buffer_view_from_view(
 		const struct lttng_buffer_view *src, size_t offset,
@@ -28,12 +34,14 @@ struct lttng_buffer_view lttng_buffer_view_from_view(
 	assert(src);
 
 	if (offset > src->size) {
-		ERR("Attempt to create buffer view with invalid offset");
+		ERR("Attempt to create buffer view from another view with invalid offset (offset > source size): source size = %zu, offset in source = %zu, length = %zd",
+				src->size, offset, len);
 		goto end;
 	}
 
 	if (len != -1 && len > (src->size - offset)) {
-		ERR("Attempt to create buffer view with invalid length");
+		ERR("Attempt to create buffer view from another view with invalid length (length > space left after offset in source): source size = %zu, offset in source = %zu, length = %zd",
+				src->size, offset, len);
 		goto end;
 	}
 
@@ -53,12 +61,14 @@ struct lttng_buffer_view lttng_buffer_view_from_dynamic_buffer(
 	assert(src);
 
 	if (offset > src->size) {
-		ERR("Attempt to create buffer view with invalid offset");
+		ERR("Attempt to create buffer view from a dynamic buffer with invalid offset (offset > source size): source size = %zu, offset in source = %zu, length = %zd",
+				src->size, offset, len);
 		goto end;
 	}
 
 	if (len != -1 && len > (src->size - offset)) {
-		ERR("Attempt to create buffer view with invalid length");
+		ERR("Attempt to create buffer view from a dynamic buffer with invalid length (length > space left after offset in source): source size = %zu, offset in source = %zu, length = %zd",
+				src->size, offset, len);
 		goto end;
 	}