On Wed, Sep 06, 2023 at 11:32:04AM +0200, Denis V. Lunev wrote:
> This patch also drops definition of some locals in main() to avoid
> useless data copy.
> 
> Signed-off-by: Denis V. Lunev <d...@openvz.org>
> CC: Eric Blake <ebl...@redhat.com>
> CC: Vladimir Sementsov-Ogievskiy <vsement...@yandex-team.ru>
> ---
>  qemu-nbd.c | 60 ++++++++++++++++++++++++------------------------------
>  1 file changed, 27 insertions(+), 33 deletions(-)

> @@ -519,7 +519,6 @@ int main(int argc, char **argv)
>      const char *bindto = NULL;
>      const char *port = NULL;
>      char *sockpath = NULL;
> -    char *device = NULL;
>      QemuOpts *sn_opts = NULL;
>      const char *sn_id_or_name = NULL;
>      const char *sopt = "hVb:o:p:rsnc:dvk:e:f:tl:x:T:D:AB:L";
> @@ -582,16 +581,16 @@ int main(int argc, char **argv)
>      const char *tlshostname = NULL;
>      bool imageOpts = false;
>      bool writethrough = false; /* Client will flush as needed. */
> -    bool verbose = false;
> -    bool fork_process = false;
>      bool list = false;
>      unsigned socket_activation;
>      const char *pid_file_name = NULL;
>      const char *selinux_label = NULL;
>      BlockExportOptions *export_opts;
> -#if HAVE_NBD_DEVICE
> -    struct NbdClientOpts opts;
> -#endif
> +    struct NbdClientOpts opts = {
> +        .fork_process = false,
> +        .verbose = false,
> +        .device = NULL,
> +    };

Could also do 'struct NbdClietnOpts opts = {};' since you happen to be
zero-initializing, but this may not remain the case if more fields get
added to the struct, so I'm fine leaving it as written.

Reviewed-by: Eric Blake <ebl...@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.
Virtualization:  qemu.org | libguestfs.org


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