int dm_event_unregister_handler(const struct dm_event_handler *dmevh)
{
int ret = 1, err;
const char *uuid;
struct dm_task *dmt;
struct dm_event_daemon_message msg = { 0, 0, NULL };
if (!(dmt = _get_device_info(dmevh))) {
stack;
return 0;
}
uuid = dm_task_get_uuid(dmt);
if ((err = _do_event(DM_EVENT_CMD_UNREGISTER_FOR_EVENT, dmevh->dmeventd_path, &msg,
dmevh->dso, uuid, dmevh->mask, dmevh->timeout)) < 0) {
log_error("%s: event deregistration failed: %s",
dm_task_get_name(dmt),
msg.data ? msg.data : strerror(-err));
ret = 0;
}
dm_free(msg.data);
dm_task_destroy(dmt);
return ret;
}
int dm_event_set_timeout(const char *device_path, uint32_t timeout)
{
struct dm_event_daemon_message msg = { 0, 0, NULL };
if (!device_exists(device_path))
return -ENODEV;
return _do_event(DM_EVENT_CMD_SET_TIMEOUT, &msg,
NULL, device_path, 0, timeout);
}
//event manager procedure that does normal event handling
int awe_def_event_proc(AWE_EVENT_MODE_ACTION_TYPE action, AWE_EVENT *event, void *data)
{
AWE_WIDGET *root;
//only the 'do event' action is interesting
if (!event) return 0;
//check if there is a gui installed
root = awe_get_root_widget();
if (!root) return 0;
//do event
return _do_event(root, event, 1);
}
int dm_event_get_timeout(const char *device_path, uint32_t *timeout)
{
int ret;
struct dm_event_daemon_message msg = { 0, 0, NULL };
if (!device_exists(device_path))
return -ENODEV;
if (!(ret = _do_event(DM_EVENT_CMD_GET_TIMEOUT, &msg, NULL, device_path,
0, 0))) {
char *p = _skip_string(msg.data, ' ');
if (!p) {
log_error("malformed reply from dmeventd '%s'\n",
msg.data);
return -EIO;
}
*timeout = atoi(p);
}
if (msg.data)
dm_free(msg.data);
return ret;
}
/*
* Returns 0 if handler found; error (-ENOMEM, -ENOENT) otherwise.
*/
int dm_event_get_registered_device(struct dm_event_handler *dmevh, int next)
{
int ret = 0;
const char *uuid = NULL;
char *reply_dso = NULL, *reply_uuid = NULL;
enum dm_event_mask reply_mask = 0;
struct dm_task *dmt = NULL;
struct dm_event_daemon_message msg = { 0, 0, NULL };
struct dm_info info;
if (!(dmt = _get_device_info(dmevh))) {
stack;
return 0;
}
uuid = dm_task_get_uuid(dmt);
if (!(ret = _do_event(next ? DM_EVENT_CMD_GET_NEXT_REGISTERED_DEVICE :
DM_EVENT_CMD_GET_REGISTERED_DEVICE, dmevh->dmeventd_path,
&msg, dmevh->dso, uuid, dmevh->mask, 0))) {
/* FIXME this will probably horribly break if we get
ill-formatted reply */
ret = _parse_message(&msg, &reply_dso, &reply_uuid, &reply_mask);
} else {
ret = -ENOENT;
goto fail;
}
dm_task_destroy(dmt);
dmt = NULL;
dm_free(msg.data);
msg.data = NULL;
_dm_event_handler_clear_dev_info(dmevh);
dmevh->uuid = dm_strdup(reply_uuid);
if (!dmevh->uuid) {
ret = -ENOMEM;
goto fail;
}
if (!(dmt = _get_device_info(dmevh))) {
ret = -ENXIO; /* dmeventd probably gave us bogus uuid back */
goto fail;
}
dm_event_handler_set_dso(dmevh, reply_dso);
dm_event_handler_set_event_mask(dmevh, reply_mask);
dm_free(reply_dso);
reply_dso = NULL;
dm_free(reply_uuid);
reply_uuid = NULL;
dmevh->dev_name = dm_strdup(dm_task_get_name(dmt));
if (!dmevh->dev_name) {
ret = -ENOMEM;
goto fail;
}
if (!dm_task_get_info(dmt, &info)) {
ret = -1;
goto fail;
}
dmevh->major = info.major;
dmevh->minor = info.minor;
dm_task_destroy(dmt);
return ret;
fail:
dm_free(msg.data);
dm_free(reply_dso);
dm_free(reply_uuid);
_dm_event_handler_clear_dev_info(dmevh);
if (dmt)
dm_task_destroy(dmt);
return ret;
}
