int mwDirectory_search(struct mwDirectory *dir, const char *query) {
struct mwServiceDirectory *srvc;
struct mwChannel *chan;
struct mwPutBuffer *b;
struct mwOpaque o;
int ret;
g_return_val_if_fail(dir != NULL, -1);
g_return_val_if_fail(MW_DIRECTORY_IS_OPEN(dir), -1);
g_return_val_if_fail(query != NULL, -1);
g_return_val_if_fail(*query != '\0', -1);
srvc = dir->service;
g_return_val_if_fail(srvc != NULL, -1);
chan = srvc->channel;
g_return_val_if_fail(chan != NULL, -1);
b = mwPutBuffer_new();
guint32_put(b, map_request(dir));
guint32_put(b, dir->id);
guint16_put(b, 0x0061); /* some magic? */
guint32_put(b, 0x00000008); /* seek results */
mwString_put(b, query);
mwPutBuffer_finalize(&o, b);
ret = mwChannel_send(chan, action_search, &o);
mwOpaque_clear(&o);
return ret;
}
static void map_tio_request(struct kthread_work *work)
{
struct dm_rq_target_io *tio = container_of(work, struct dm_rq_target_io, work);
if (map_request(tio) == DM_MAPIO_REQUEUE)
dm_requeue_original_request(tio, false);
}
static int dir_open(struct mwDirectory *dir) {
struct mwServiceDirectory *srvc;
struct mwChannel *chan;
struct mwPutBuffer *b;
struct mwOpaque o;
int ret;
g_return_val_if_fail(dir != NULL, -1);
srvc = dir->service;
g_return_val_if_fail(srvc != NULL, -1);
chan = srvc->channel;
g_return_val_if_fail(chan != NULL, -1);
b = mwPutBuffer_new();
guint32_put(b, map_request(dir));
/* unsure about these three bytes */
gboolean_put(b, FALSE);
guint16_put(b, 0x0000);
guint32_put(b, dir->book->id);
mwString_put(b, dir->book->name);
mwPutBuffer_finalize(&o, b);
ret = mwChannel_send(chan, action_open, &o);
mwOpaque_clear(&o);
return ret;
}
static void map_tio_request(struct kthread_work *work)
{
struct dm_rq_target_io *tio = container_of(work, struct dm_rq_target_io, work);
struct request *rq = tio->orig;
struct mapped_device *md = tio->md;
if (map_request(tio, rq, md) == DM_MAPIO_REQUEUE)
dm_requeue_original_request(md, rq);
}
static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
const struct blk_mq_queue_data *bd)
{
struct request *rq = bd->rq;
struct dm_rq_target_io *tio = blk_mq_rq_to_pdu(rq);
struct mapped_device *md = tio->md;
struct dm_target *ti = md->immutable_target;
if (unlikely(!ti)) {
int srcu_idx;
struct dm_table *map = dm_get_live_table(md, &srcu_idx);
ti = dm_table_find_target(map, 0);
dm_put_live_table(md, srcu_idx);
}
/*
* On suspend dm_stop_queue() handles stopping the blk-mq
* request_queue BUT: even though the hw_queues are marked
* BLK_MQ_S_STOPPED at that point there is still a race that
* is allowing block/blk-mq.c to call ->queue_rq against a
* hctx that it really shouldn't. The following check guards
* against this rarity (albeit _not_ race-free).
*/
if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state)))
return BLK_MQ_RQ_QUEUE_BUSY;
if (ti->type->busy && ti->type->busy(ti))
return BLK_MQ_RQ_QUEUE_BUSY;
dm_start_request(md, rq);
/* Init tio using md established in .init_request */
init_tio(tio, rq, md);
/*
* Establish tio->ti before calling map_request().
*/
tio->ti = ti;
/* Direct call is fine since .queue_rq allows allocations */
if (map_request(tio, rq, md) == DM_MAPIO_REQUEUE) {
/* Undo dm_start_request() before requeuing */
rq_end_stats(md, rq);
rq_completed(md, rq_data_dir(rq), false);
return BLK_MQ_RQ_QUEUE_BUSY;
}
return BLK_MQ_RQ_QUEUE_OK;
}
void handle_event(xcb_generic_event_t *evt)
{
uint8_t resp_type = XCB_EVENT_RESPONSE_TYPE(evt);
switch (resp_type) {
case XCB_MAP_REQUEST:
map_request(evt);
break;
case XCB_DESTROY_NOTIFY:
destroy_notify(evt);
break;
case XCB_UNMAP_NOTIFY:
unmap_notify(evt);
break;
case XCB_CLIENT_MESSAGE:
client_message(evt);
break;
case XCB_CONFIGURE_REQUEST:
configure_request(evt);
break;
case XCB_PROPERTY_NOTIFY:
property_notify(evt);
break;
case XCB_ENTER_NOTIFY:
enter_notify(evt);
break;
case XCB_MOTION_NOTIFY:
motion_notify(evt);
break;
case XCB_FOCUS_IN:
focus_in(evt);
break;
case 0:
process_error(evt);
break;
default:
if (randr && resp_type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
update_monitors();
}
break;
}
}
static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
const struct blk_mq_queue_data *bd)
{
struct request *rq = bd->rq;
struct dm_rq_target_io *tio = blk_mq_rq_to_pdu(rq);
struct mapped_device *md = tio->md;
struct dm_target *ti = md->immutable_target;
if (unlikely(!ti)) {
int srcu_idx;
struct dm_table *map = dm_get_live_table(md, &srcu_idx);
ti = dm_table_find_target(map, 0);
dm_put_live_table(md, srcu_idx);
}
if (ti->type->busy && ti->type->busy(ti))
return BLK_MQ_RQ_QUEUE_BUSY;
dm_start_request(md, rq);
/* Init tio using md established in .init_request */
init_tio(tio, rq, md);
/*
* Establish tio->ti before calling map_request().
*/
tio->ti = ti;
/* Direct call is fine since .queue_rq allows allocations */
if (map_request(tio) == DM_MAPIO_REQUEUE) {
/* Undo dm_start_request() before requeuing */
rq_end_stats(md, rq);
rq_completed(md, rq_data_dir(rq), false);
blk_mq_delay_run_hw_queue(hctx, 100/*ms*/);
return BLK_MQ_RQ_QUEUE_BUSY;
}
return BLK_MQ_RQ_QUEUE_OK;
}
