/*===========================================================================*
* blockdriver_announce *
*===========================================================================*/
void blockdriver_announce(int type)
{
/* Announce we are up after a fresh start or a restart. */
int r;
char key[DS_MAX_KEYLEN];
char label[DS_MAX_KEYLEN];
char *driver_prefix = "drv.blk.";
/* Callers are allowed to use ipc_sendrec to communicate with drivers.
* For this reason, there may blocked callers when a driver restarts.
* Ask the kernel to unblock them (if any). Note that most block drivers
* will not restart statefully, and thus will skip this code.
*/
if (type == SEF_INIT_RESTART) {
if ((r = sys_statectl(SYS_STATE_CLEAR_IPC_REFS)) != OK)
panic("blockdriver_init: sys_statectl failed: %d", r);
}
/* Publish a driver up event. */
if ((r = ds_retrieve_label_name(label, sef_self())) != OK)
panic("blockdriver_init: unable to get own label: %d", r);
snprintf(key, DS_MAX_KEYLEN, "%s%s", driver_prefix, label);
if ((r = ds_publish_u32(key, DS_DRIVER_UP, DSF_OVERWRITE)) != OK)
panic("blockdriver_init: unable to publish driver up event: %d", r);
/* Expect an open for any device before serving regular driver requests. */
clear_open_devs();
/* Initialize or reset the message queue. */
mq_init();
}
/*===========================================================================*
* chardriver_announce *
*===========================================================================*/
void chardriver_announce(void)
{
/* Announce we are up after a fresh start or restart. */
int r;
char key[DS_MAX_KEYLEN];
char label[DS_MAX_KEYLEN];
char *driver_prefix = "drv.chr.";
/* Callers are allowed to use sendrec to communicate with drivers.
* For this reason, there may blocked callers when a driver restarts.
* Ask the kernel to unblock them (if any).
*/
#if USE_STATECTL
if ((r = sys_statectl(SYS_STATE_CLEAR_IPC_REFS)) != OK)
panic("chardriver_init: sys_statectl failed: %d", r);
#endif
/* Publish a driver up event. */
if ((r = ds_retrieve_label_name(label, getprocnr())) != OK)
panic("chardriver_init: unable to get own label: %d", r);
snprintf(key, DS_MAX_KEYLEN, "%s%s", driver_prefix, label);
if ((r = ds_publish_u32(key, DS_DRIVER_UP, DSF_OVERWRITE)) != OK)
panic("chardriver_init: unable to publish driver up event: %d", r);
/* Expect a DEV_OPEN for any device before serving regular driver requests. */
clear_open_devs();
}
/*===========================================================================*
* test_label *
*===========================================================================*/
void test_label(void)
{
int r;
char label[DS_MAX_KEYLEN];
endpoint_t endpoint;
/* Retrieve own label and endpoint. */
r = ds_retrieve_label_name(label, getprocnr());
assert(r == OK);
r = ds_retrieve_label_endpt(label, &endpoint);
assert(r == OK && endpoint == getprocnr());
/* Publish and delete. */
r = ds_publish_label(label, endpoint, 0);
assert(r == EPERM);
r = ds_delete_label(label);
assert(r == EPERM);
printf("DSTEST: LABEL test successful!\n");
}
/*===========================================================================*
* netdriver_announce *
*===========================================================================*/
PUBLIC void netdriver_announce()
{
/* Announce we are up after a fresh start or restart. */
int r;
char key[DS_MAX_KEYLEN];
char label[DS_MAX_KEYLEN];
char *driver_prefix = "drv.net.";
/* Publish a driver up event. */
r = ds_retrieve_label_name(label, getprocnr());
if (r != OK) {
panic("driver_announce: unable to get own label: %d\n", r);
}
snprintf(key, DS_MAX_KEYLEN, "%s%s", driver_prefix, label);
r = ds_publish_u32(key, DS_DRIVER_UP, DSF_OVERWRITE);
if (r != OK) {
panic("driver_announce: unable to publish driver up event: %d\n", r);
}
conf_expected = TRUE;
}
/*===========================================================================*
* test_label *
*===========================================================================*/
void test_label(void)
{
int r;
char get_label[DS_MAX_KEYLEN];
unsigned long num;
/* Publish and retrieve. */
r = ds_publish_label(key_label, 1234, 0);
assert(r == OK);
r = ds_retrieve_label_num(key_label, &num);
assert(r == OK && num == 1234);
/* Here are the differences w.r.t. U32. */
r = ds_publish_label("hello", 1234, 0);
assert(r == EEXIST);
r = ds_retrieve_label_name(get_label, 1234);
assert(r == OK && strcmp(key_label, get_label) == 0);
r = ds_delete_label(key_label);
assert(r == OK);
printf("DSTEST: LABEL test successful!\n");
}