Re: [Qemu-devel] [PATCH 05/27] vhost-user-scsi: connect unix socket before allocating

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

On 08/23/2017 01:19 PM, Marc-André Lureau wrote:
> This simplify a little bit memory management in the following patches.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>   contrib/vhost-user-scsi/vhost-user-scsi.c | 18 +++++++++---------
>   1 file changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/contrib/vhost-user-scsi/vhost-user-scsi.c b/contrib/vhost-user-scsi/vhost-user-scsi.c
> index 1fb57da2da..cddaaf8995 100644
> --- a/contrib/vhost-user-scsi/vhost-user-scsi.c
> +++ b/contrib/vhost-user-scsi/vhost-user-scsi.c
> @@ -715,11 +715,11 @@ static void vdev_scsi_deinit(vhost_scsi_dev_t *vdev_scsi)
>       }
>   }
>   
> -static vhost_scsi_dev_t *vdev_scsi_new(char *unix_fn)
> +static vhost_scsi_dev_t *vdev_scsi_new(int server_sock)
>   {
>       vhost_scsi_dev_t *vdev_scsi = NULL;
>   
> -    assert(unix_fn);
> +    assert(server_sock >= 0);

This assert() can't happen anymore.

Removing it:
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

>   
>       vdev_scsi = calloc(1, sizeof(vhost_scsi_dev_t));
>       if (!vdev_scsi) {
> @@ -727,11 +727,7 @@ static vhost_scsi_dev_t *vdev_scsi_new(char *unix_fn)
>           return NULL;
>       }
>   
> -    vdev_scsi->server_sock = unix_sock_new(unix_fn);
> -    if (vdev_scsi->server_sock < 0) {
> -        goto err;
> -    }
> -
> +    vdev_scsi->server_sock = server_sock;
>       vdev_scsi->loop = g_main_loop_new(NULL, FALSE);
>       if (!vdev_scsi->loop) {
>           PERR("Error creating glib event loop");
> @@ -815,7 +811,7 @@ int main(int argc, char **argv)
>       vhost_scsi_dev_t *vdev_scsi = NULL;
>       char *unix_fn = NULL;
>       char *iscsi_uri = NULL;
> -    int opt, err = EXIT_SUCCESS;
> +    int sock, opt, err = EXIT_SUCCESS;
>   
>       while ((opt = getopt(argc, argv, "u:i:")) != -1) {
>           switch (opt) {
> @@ -835,7 +831,11 @@ int main(int argc, char **argv)
>           goto help;
>       }
>   
> -    vdev_scsi = vdev_scsi_new(unix_fn);
> +    sock = unix_sock_new(unix_fn);
> +    if (sock < 0) {
> +        goto err;
> +    }
> +    vdev_scsi = vdev_scsi_new(sock);
>       if (!vdev_scsi) {
>           goto err;
>       }
>