Fix buffer overwrite issue
Current code allocates buffer for path based on strdup, which would let
the size of path equals to the size of blktrace_dest_dir. But the code
next that joins it with the filename of dump file, which would overwrite
the buffer, and triggered an issue like following:
$ ./iowatcher -t trace.dump -o trace.svg
Unable to find trace file ./trace.dumpY
^
Refactoring join_path a bit to fix this issue.
Cc: Liu Bo <liub.liubo@gmail.com>
Signed-off-by: Yuanhan Liu <yliu.null@gmail.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
1 file changed
