Put the trace file into valid JSON format by removing the trailing comma
from the trace file array.
Signed-off-by: Deborah Brouwer <deborah.brouwer@xxxxxxxxxxxxx>
---
Changes since v1:
- open file in "r+" and use fseek instead of ftruncate
utils/v4l2-tracer/v4l2-tracer.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/utils/v4l2-tracer/v4l2-tracer.cpp b/utils/v4l2-tracer/v4l2-tracer.cpp
index ae6f68e4..cb873d83 100644
--- a/utils/v4l2-tracer/v4l2-tracer.cpp
+++ b/utils/v4l2-tracer/v4l2-tracer.cpp
@@ -345,8 +345,8 @@ int tracer(int argc, char *argv[], bool retrace)
fprintf(stderr, "Tracee exited with status: %d\n", exec_result);
/* Close the json-array and the trace file. */
- trace_file = fopen(trace_filename.c_str(), "a");
- fseek(trace_file, 0L, SEEK_END);
+ trace_file = fopen(trace_filename.c_str(), "r+");
+ fseek(trace_file, -2L, SEEK_END);
fputs("\n]\n", trace_file);
fclose(trace_file);
--
2.39.1
