On Tue, Jun 21, 2016 at 12:02:34PM +0200, marcandre.lur...@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lur...@redhat.com>
>
> Just some more error checking.
>
> Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
Point being? Callers just ignore it afterwards ...
> ---
> hw/virtio/vhost-user.c | 44 +++++++++++++++++++++++++++++++-------------
> 1 file changed, 31 insertions(+), 13 deletions(-)
>
> diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
> index 5dae496..e51df27 100644
> --- a/hw/virtio/vhost-user.c
> +++ b/hw/virtio/vhost-user.c
> @@ -214,7 +214,9 @@ static int vhost_user_set_log_base(struct vhost_dev *dev,
> uint64_t base,
> fds[fd_num++] = log->fd;
> }
>
> - vhost_user_write(dev, &msg, fds, fd_num);
> + if (vhost_user_write(dev, &msg, fds, fd_num) < 0) {
> + return -1;
> + }
>
> if (shmfd) {
> msg.size = 0;
> @@ -275,7 +277,9 @@ static int vhost_user_set_mem_table(struct vhost_dev *dev,
> msg.size += sizeof(msg.payload.memory.padding);
> msg.size += fd_num * sizeof(VhostUserMemoryRegion);
>
> - vhost_user_write(dev, &msg, fds, fd_num);
> + if (vhost_user_write(dev, &msg, fds, fd_num) < 0) {
> + return -1;
> + }
>
> return 0;
> }
> @@ -290,7 +294,9 @@ static int vhost_user_set_vring_addr(struct vhost_dev
> *dev,
> .size = sizeof(msg.payload.addr),
> };
>
> - vhost_user_write(dev, &msg, NULL, 0);
> + if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
> + return -1;
> + }
>
> return 0;
> }
> @@ -313,7 +319,9 @@ static int vhost_set_vring(struct vhost_dev *dev,
> .size = sizeof(msg.payload.state),
> };
>
> - vhost_user_write(dev, &msg, NULL, 0);
> + if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
> + return -1;
> + }
>
> return 0;
> }
> @@ -360,7 +368,9 @@ static int vhost_user_get_vring_base(struct vhost_dev
> *dev,
> .size = sizeof(msg.payload.state),
> };
>
> - vhost_user_write(dev, &msg, NULL, 0);
> + if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
> + return -1;
> + }
>
> if (vhost_user_read(dev, &msg) < 0) {
> return 0;
> @@ -401,7 +411,9 @@ static int vhost_set_vring_file(struct vhost_dev *dev,
> msg.payload.u64 |= VHOST_USER_VRING_NOFD_MASK;
> }
>
> - vhost_user_write(dev, &msg, fds, fd_num);
> + if (vhost_user_write(dev, &msg, fds, fd_num) < 0) {
> + return -1;
> + }
>
> return 0;
> }
> @@ -427,7 +439,9 @@ static int vhost_user_set_u64(struct vhost_dev *dev, int
> request, uint64_t u64)
> .size = sizeof(msg.payload.u64),
> };
>
> - vhost_user_write(dev, &msg, NULL, 0);
> + if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
> + return -1;
> + }
>
> return 0;
> }
> @@ -455,7 +469,9 @@ static int vhost_user_get_u64(struct vhost_dev *dev, int
> request, uint64_t *u64)
> return 0;
> }
>
> - vhost_user_write(dev, &msg, NULL, 0);
> + if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
> + return -1;
> + }
>
> if (vhost_user_read(dev, &msg) < 0) {
> return 0;
> @@ -489,7 +505,9 @@ static int vhost_user_set_owner(struct vhost_dev *dev)
> .flags = VHOST_USER_VERSION,
> };
>
> - vhost_user_write(dev, &msg, NULL, 0);
> + if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
> + return -1;
> + }
>
> return 0;
> }
> @@ -501,7 +519,9 @@ static int vhost_user_reset_device(struct vhost_dev *dev)
> .flags = VHOST_USER_VERSION,
> };
>
> - vhost_user_write(dev, &msg, NULL, 0);
> + if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
> + return -1;
> + }
>
> return 0;
> }
> @@ -588,7 +608,6 @@ static bool vhost_user_requires_shm_log(struct vhost_dev
> *dev)
> static int vhost_user_migration_done(struct vhost_dev *dev, char* mac_addr)
> {
> VhostUserMsg msg = { 0 };
> - int err;
>
> assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER);
>
> @@ -605,8 +624,7 @@ static int vhost_user_migration_done(struct vhost_dev
> *dev, char* mac_addr)
> memcpy((char *)&msg.payload.u64, mac_addr, 6);
> msg.size = sizeof(msg.payload.u64);
>
> - err = vhost_user_write(dev, &msg, NULL, 0);
> - return err;
> + return vhost_user_write(dev, &msg, NULL, 0);
> }
> return -1;
> }
> --
> 2.7.4
