[lttng-dev] [PATCH babeltrace] Fix: Use the packet's final size when mmap-ing the next packet

Jérémie Galarneau jeremie.galarneau at efficios.com
Tue Oct 15 13:23:18 EDT 2013


ctf_packet_seek() assumed that a packet would be of fixed size
"WRITE_PACKET_LEN" when seeking to the next packet in write mode.
This ensures that the real size used.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau at efficios.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
---
 formats/ctf/ctf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c
index 947b439..60d9c9f 100644
--- a/formats/ctf/ctf.c
+++ b/formats/ctf/ctf.c
@@ -712,7 +712,7 @@ void ctf_packet_seek(struct bt_stream_pos *stream_pos, size_t index, int whence)
 		switch (whence) {
 		case SEEK_CUR:
 			/* The writer will add padding */
-			pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT;
+			pos->mmap_offset += pos->packet_size / CHAR_BIT;
 			break;
 		case SEEK_SET:
 			assert(index == 0);	/* only seek supported for now */
-- 
1.8.4




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