[lttng-dev] [PATCH lttng-tools] Fix: unchecked return value in trace_clock_read64_monotonic

[Jérémie Galarneau]

Merged, but I also added a PERROR() and a TODO to report this error up
the caller chain.

Thanks,
Jérémie

On Tue, May 17, 2016 at 12:06 PM, Mathieu Desnoyers
<mathieu.desnoyers at efficios.com> wrote:
> Found by Coverity:
>
> CID 1311498 (#1 of 1): Unchecked return value (CHECKED_RETURN)1.
> check_return: Calling clock_gettime without checking return value (as is
> done elsewhere 8 out of 9 times).
>
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
> ---
>  src/bin/lttng-sessiond/ust-clock.h | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/src/bin/lttng-sessiond/ust-clock.h b/src/bin/lttng-sessiond/ust-clock.h
> index 8493737..14ba71c 100644
> --- a/src/bin/lttng-sessiond/ust-clock.h
> +++ b/src/bin/lttng-sessiond/ust-clock.h
> @@ -57,7 +57,10 @@ uint64_t trace_clock_read64_monotonic(void)
>  {
>         struct timespec ts;
>
> -       clock_gettime(CLOCK_MONOTONIC, &ts);
> +       if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
> +               ts.tv_sec = 0;
> +               ts.tv_nsec = 0;
> +       }
>         return ((uint64_t) ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
>  }
>
> --
> 2.1.4
>



-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com