diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2021-06-09 08:46:56 -0700 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2021-06-30 13:18:42 +0200 |
| commit | 50de51387f3fda9d3da049d60f8b631164f11f08 (patch) | |
| tree | 8f5f3737a57ce956a82a8af195b2447c8cf48fcc /hw/input | |
| parent | b8da65689ac18f4d288bdc679fb178031bdd929e (diff) | |
| download | qemu-50de51387f3fda9d3da049d60f8b631164f11f08.zip | |
vhost: Distinguish errors in vhost_dev_get_config()
Instead of just returning 0/-1 and letting the caller make up a
meaningless error message, add an Error parameter to allow reporting the
real error and switch to 0/-errno so that different kind of errors can
be distinguished in the caller.
config_len in vhost_user_get_config() is defined by the device, so if
it's larger than VHOST_USER_MAX_CONFIG_SIZE, this is a programming
error. Turn the corresponding check into an assertion.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210609154658.350308-6-kwolf@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/input')
| -rw-r--r-- | hw/input/vhost-user-input.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/input/vhost-user-input.c b/hw/input/vhost-user-input.c index 63984a8ba7..273e96a7b1 100644 --- a/hw/input/vhost-user-input.c +++ b/hw/input/vhost-user-input.c @@ -49,13 +49,15 @@ static void vhost_input_get_config(VirtIODevice *vdev, uint8_t *config_data) { VirtIOInput *vinput = VIRTIO_INPUT(vdev); VHostUserInput *vhi = VHOST_USER_INPUT(vdev); + Error *local_err = NULL; int ret; memset(config_data, 0, vinput->cfg_size); - ret = vhost_dev_get_config(&vhi->vhost->dev, config_data, vinput->cfg_size); + ret = vhost_dev_get_config(&vhi->vhost->dev, config_data, vinput->cfg_size, + &local_err); if (ret) { - error_report("vhost-user-input: get device config space failed"); + error_report_err(local_err); return; } } |