diff options
| author | Markus Armbruster <armbru@redhat.com> | 2021-07-20 14:54:04 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2021-08-26 17:15:28 +0200 |
| commit | 66647ed4591572e7928cb5865909bb6c572d7e40 (patch) | |
| tree | d388696d682aae8efe8ffc1c17d89fe074cfbb3f /hw | |
| parent | 0d9a6654512a6b7ab18c53fc3f5a6bba8de2dde8 (diff) | |
| download | qemu-66647ed4591572e7928cb5865909bb6c572d7e40.zip | |
vhost: Clean up how VhostOpts method vhost_get_config() fails
vhost_user_get_config() can fail without setting an error. Unclean.
Its caller vhost_dev_get_config() compensates by substituting a
generic error then. Goes back to commit 50de51387f "vhost:
Distinguish errors in vhost_dev_get_config()".
Clean up by moving the generic error from vhost_dev_get_config() to
all the failure paths that neglect to set an error.
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210720125408.387910-13-armbru@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[Sign of error_setg_errno()'s second argument fixed in both calls]
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio/vhost-user.c | 2 | ||||
| -rw-r--r-- | hw/virtio/vhost.c | 10 |
2 files changed, 4 insertions, 8 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index aec6cc1990..229c114a19 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -2139,10 +2139,12 @@ static int vhost_user_get_config(struct vhost_dev *dev, uint8_t *config, msg.payload.config.offset = 0; msg.payload.config.size = config_len; if (vhost_user_write(dev, &msg, NULL, 0) < 0) { + error_setg_errno(errp, EPROTO, "vhost_get_config failed"); return -EPROTO; } if (vhost_user_read(dev, &msg) < 0) { + error_setg_errno(errp, EPROTO, "vhost_get_config failed"); return -EPROTO; } diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index dbbc6b6915..88f8a397dc 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1564,17 +1564,11 @@ void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits, int vhost_dev_get_config(struct vhost_dev *hdev, uint8_t *config, uint32_t config_len, Error **errp) { - ERRP_GUARD(); - int ret; - assert(hdev->vhost_ops); if (hdev->vhost_ops->vhost_get_config) { - ret = hdev->vhost_ops->vhost_get_config(hdev, config, config_len, errp); - if (ret < 0 && !*errp) { - error_setg_errno(errp, -ret, "vhost_get_config failed"); - } - return ret; + return hdev->vhost_ops->vhost_get_config(hdev, config, config_len, + errp); } error_setg(errp, "vhost_get_config not implemented"); |