Re: [Qemu-devel] [PATCH] linux-user: fix error propagation in clock_gettime

[Laurent Vivier <laurent@vivier.eu>]

Le 01/04/2018 à 22:37, Max Filippov a écrit :
> host_to_target_timespec may return error if target address could not be
> locked, but it is ignored.
> Propagate return value of host_to_target_timespec to the caller of
> clock_gettime.
> 
> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
> ---
>  linux-user/syscall.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index d51e2a00ee31..52e2f9c16479 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -11884,7 +11884,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
>          struct timespec ts;
>          ret = get_errno(clock_gettime(arg1, &ts));
>          if (!is_error(ret)) {
> -            host_to_target_timespec(arg2, &ts);
> +            ret = host_to_target_timespec(arg2, &ts);
>          }
>          break;
>      }
> 

Could you also update in the same way clock_getres?

There are other syscalls ignoring result of host_to_target_timespec(),
but they are also ignoring result of target_to_host_timespec, but I
don't think the -rc stage is the good moment to fix them all.

Thanks,
Laurent