[Spice-devel] [PATCH spice-server 2/2] char device: Ensure public function parameters are not NULL
Fabiano Fidêncio
fidencio at redhat.com
Thu Nov 5 14:24:13 PST 2015
On Thu, Nov 5, 2015 at 4:58 PM, Pavel Grunt <pgrunt at redhat.com> wrote:
> ---
> server/char_device.c | 47 ++++++++++++++++++++++++++++++++++++++++++++---
> server/reds.c | 2 ++
> server/spicevmc.c | 6 ++++++
> 3 files changed, 52 insertions(+), 3 deletions(-)
>
> diff --git a/server/char_device.c b/server/char_device.c
> index 54357f0..00ed4d9 100644
> --- a/server/char_device.c
> +++ b/server/char_device.c
> @@ -376,6 +376,9 @@ void spice_char_device_send_to_client_tokens_add(SpiceCharDeviceState *dev,
> {
> SpiceCharDeviceClientState *dev_client;
>
> + spice_return_if_fail(dev != NULL);
> + spice_return_if_fail(client != NULL);
> +
> dev_client = spice_char_device_client_find(dev, client);
>
> if (!dev_client) {
> @@ -391,6 +394,9 @@ void spice_char_device_send_to_client_tokens_set(SpiceCharDeviceState *dev,
> {
> SpiceCharDeviceClientState *dev_client;
>
> + spice_return_if_fail(dev != NULL);
> + spice_return_if_fail(client != NULL);
> +
> dev_client = spice_char_device_client_find(dev, client);
>
> if (!dev_client) {
> @@ -573,6 +579,8 @@ SpiceCharDeviceWriteBuffer *spice_char_device_write_buffer_get(SpiceCharDeviceSt
> RedClient *client,
> int size)
> {
> + spice_return_val_if_fail(dev != NULL, NULL);
> +
> return __spice_char_device_write_buffer_get(dev, client, size,
> client ? WRITE_BUFFER_ORIGIN_CLIENT : WRITE_BUFFER_ORIGIN_SERVER,
> 0);
> @@ -581,6 +589,8 @@ SpiceCharDeviceWriteBuffer *spice_char_device_write_buffer_get(SpiceCharDeviceSt
> SpiceCharDeviceWriteBuffer *spice_char_device_write_buffer_get_server_no_token(
> SpiceCharDeviceState *dev, int size)
> {
> + spice_return_val_if_fail(dev != NULL, NULL);
> +
> return __spice_char_device_write_buffer_get(dev, NULL, size,
> WRITE_BUFFER_ORIGIN_SERVER_NO_TOKEN, 0);
> }
> @@ -597,6 +607,7 @@ void spice_char_device_write_buffer_add(SpiceCharDeviceState *dev,
> SpiceCharDeviceWriteBuffer *write_buf)
> {
> spice_assert(dev);
> + spice_return_if_fail(write_buf != NULL);
> /* caller shouldn't add buffers for client that was removed */
> if (write_buf->origin == WRITE_BUFFER_ORIGIN_CLIENT &&
> !spice_char_device_client_find(dev, write_buf->client)) {
> @@ -612,9 +623,15 @@ void spice_char_device_write_buffer_add(SpiceCharDeviceState *dev,
> void spice_char_device_write_buffer_release(SpiceCharDeviceState *dev,
> SpiceCharDeviceWriteBuffer *write_buf)
> {
> - int buf_origin = write_buf->origin;
> - uint32_t buf_token_price = write_buf->token_price;
> - RedClient *client = write_buf->client;
> + int buf_origin;
> + uint32_t buf_token_price;
> + RedClient *client;
> +
> + spice_return_if_fail(write_buf != NULL);
> +
> + buf_origin = write_buf->origin;
> + buf_token_price = write_buf->token_price;
> + client = write_buf->client;
>
> spice_assert(!ring_item_is_linked(&write_buf->link));
> if (!dev) {
> @@ -690,6 +707,8 @@ SpiceCharDeviceState *spice_char_device_state_create(SpiceCharDeviceInstance *si
> void spice_char_device_state_reset_dev_instance(SpiceCharDeviceState *state,
> SpiceCharDeviceInstance *sin)
> {
> + spice_return_if_fail(state != NULL);
> + spice_return_if_fail(sin != NULL);
> spice_debug("sin %p dev_state %p", sin, state);
> state->sin = sin;
> sin->st = state;
> @@ -697,6 +716,7 @@ void spice_char_device_state_reset_dev_instance(SpiceCharDeviceState *state,
>
> void *spice_char_device_state_opaque_get(SpiceCharDeviceState *dev)
> {
> + spice_return_val_if_fail(dev != NULL, NULL);
> return dev->opaque;
> }
>
> @@ -721,6 +741,8 @@ static void spice_char_device_state_unref(SpiceCharDeviceState *char_dev)
>
> void spice_char_device_state_destroy(SpiceCharDeviceState *char_dev)
> {
> + spice_return_if_fail(char_dev != NULL);
> +
> reds_on_char_device_state_destroy(char_dev);
> if (char_dev->write_to_dev_timer) {
> core->timer_remove(char_dev->write_to_dev_timer);
> @@ -796,6 +818,9 @@ void spice_char_device_client_remove(SpiceCharDeviceState *dev,
> {
> SpiceCharDeviceClientState *dev_client;
>
> + spice_return_if_fail(dev != NULL);
> + spice_return_if_fail(client != NULL);
> +
> spice_debug("dev_state %p client %p", dev, client);
> dev_client = spice_char_device_client_find(dev, client);
>
> @@ -814,11 +839,16 @@ void spice_char_device_client_remove(SpiceCharDeviceState *dev,
> int spice_char_device_client_exists(SpiceCharDeviceState *dev,
> RedClient *client)
> {
> + spice_return_val_if_fail(dev != NULL, FALSE);
> + spice_return_val_if_fail(client != NULL, FALSE);
> +
> return (spice_char_device_client_find(dev, client) != NULL);
> }
>
> void spice_char_device_start(SpiceCharDeviceState *dev)
> {
> + spice_return_if_fail(dev != NULL);
> +
> spice_debug("dev_state %p", dev);
> dev->running = TRUE;
> spice_char_device_state_ref(dev);
> @@ -829,6 +859,8 @@ void spice_char_device_start(SpiceCharDeviceState *dev)
>
> void spice_char_device_stop(SpiceCharDeviceState *dev)
> {
> + spice_return_if_fail(dev != NULL);
> +
> spice_debug("dev_state %p", dev);
> dev->running = FALSE;
> dev->active = FALSE;
> @@ -841,6 +873,8 @@ void spice_char_device_reset(SpiceCharDeviceState *dev)
> {
> RingItem *client_item;
>
> + spice_return_if_fail(dev != NULL);
> +
> spice_char_device_stop(dev);
> dev->wait_for_migrate_data = FALSE;
> spice_debug("dev_state %p", dev);
> @@ -871,6 +905,8 @@ void spice_char_device_reset(SpiceCharDeviceState *dev)
>
> void spice_char_device_wakeup(SpiceCharDeviceState *dev)
> {
> + spice_return_if_fail(dev != NULL);
> +
> spice_char_device_write_to_device(dev);
> spice_char_device_read_from_device(dev);
> }
> @@ -883,6 +919,7 @@ void spice_char_device_state_migrate_data_marshall_empty(SpiceMarshaller *m)
> {
> SpiceMigrateDataCharDevice *mig_data;
>
> + spice_return_if_fail(m != NULL);
> spice_debug(NULL);
> mig_data = (SpiceMigrateDataCharDevice *)spice_marshaller_reserve_space(m,
> sizeof(*mig_data));
> @@ -907,6 +944,8 @@ void spice_char_device_state_migrate_data_marshall(SpiceCharDeviceState *dev,
> uint32_t *write_to_dev_tokens_ptr;
> SpiceMarshaller *m2;
>
> + spice_return_if_fail(dev != NULL);
> + spice_return_if_fail(m != NULL);
> /* multi-clients are not supported */
> spice_assert(dev->num_clients == 1);
> client_state = SPICE_CONTAINEROF(ring_get_tail(&dev->clients),
> @@ -964,6 +1003,8 @@ int spice_char_device_state_restore(SpiceCharDeviceState *dev,
> SpiceCharDeviceClientState *client_state;
> uint32_t client_tokens_window;
>
> + spice_return_val_if_fail(dev != NULL, FALSE);
> + spice_return_val_if_fail(mig_data != NULL, FALSE);
> spice_assert(dev->num_clients == 1 && dev->wait_for_migrate_data);
>
> client_state = SPICE_CONTAINEROF(ring_get_tail(&dev->clients),
> diff --git a/server/reds.c b/server/reds.c
> index 1f6774e..4d18ca8 100644
> --- a/server/reds.c
> +++ b/server/reds.c
> @@ -2983,6 +2983,8 @@ static SpiceCharDeviceState *attach_to_red_agent(SpiceCharDeviceInstance *sin)
>
> SPICE_GNUC_VISIBLE void spice_server_char_device_wakeup(SpiceCharDeviceInstance* sin)
> {
> + spice_return_if_fail(sin != NULL);
> +
Hmm. Just a minor, but maybe would worth to use spice_return_if_fail()
for sin->st as well.
> if (!sin->st) {
> spice_warning("no SpiceCharDeviceState attached to instance %p", sin);
> return;
> diff --git a/server/spicevmc.c b/server/spicevmc.c
> index 6ac1561..0780192 100644
> --- a/server/spicevmc.c
> +++ b/server/spicevmc.c
> @@ -508,6 +508,8 @@ SpiceCharDeviceState *spicevmc_device_connect(SpiceCharDeviceInstance *sin,
> ClientCbs client_cbs = { NULL, };
> SpiceCharDeviceCallbacks char_dev_cbs = {NULL, };
>
> + spice_return_val_if_fail(sin != NULL, NULL);
> +
> channel_cbs.config_socket = spicevmc_red_channel_client_config_socket;
> channel_cbs.on_disconnect = spicevmc_red_channel_client_on_disconnect;
> channel_cbs.send_item = spicevmc_red_channel_send_item;
> @@ -552,6 +554,8 @@ void spicevmc_device_disconnect(SpiceCharDeviceInstance *sin)
> {
> SpiceVmcState *state;
>
> + spice_return_if_fail(sin != NULL);
> +
> state = (SpiceVmcState *)spice_char_device_state_opaque_get(sin->st);
>
> if (state->recv_from_client_buf) {
> @@ -569,6 +573,8 @@ SPICE_GNUC_VISIBLE void spice_server_port_event(SpiceCharDeviceInstance *sin, ui
> {
> SpiceVmcState *state;
>
> + spice_return_if_fail(sin != NULL);
> +
Same here ...
> if (sin->st == NULL) {
> spice_warning("no SpiceCharDeviceState attached to instance %p", sin);
> return;
> --
> 2.5.0
>
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