static int
dmte_mod_handler(module_t mod, int type, void *unused)
{
dm_target_t *dmt = NULL;
int err = 0;
switch(type) {
case MOD_LOAD:
if ((dmt = dm_target_lookup("error")) != NULL) {
dm_target_unbusy(dmt);
return EEXIST;
}
dmt = dm_target_alloc("error");
dmt->version[0] = 1;
dmt->version[1] = 0;
dmt->version[2] = 0;
strlcpy(dmt->name, "error", DM_MAX_TYPE_NAME);
dmt->init = &dm_target_error_init;
dmt->status = &dm_target_error_status;
dmt->strategy = &dm_target_error_strategy;
dmt->deps = &dm_target_error_deps;
dmt->destroy = &dm_target_error_destroy;
dmt->upcall = &dm_target_error_upcall;
dmt->dump = NULL;
err = dm_target_insert(dmt);
if (err == 0)
kprintf("dm_target_error: Successfully initialized\n");
break;
case MOD_UNLOAD:
err = dm_target_rem("error");
if (err == 0)
kprintf("dm_target_error: unloaded\n");
break;
default:
break;
}
return err;
}
static int
dm_target_snapshot_modcmd(modcmd_t cmd, void *arg)
{
dm_target_t *dmt, *dmt1;
int r;
dmt = NULL;
dmt1 = NULL;
switch (cmd) {
case MODULE_CMD_INIT:
if (((dmt = dm_target_lookup("snapshot")) != NULL)) {
dm_target_unbusy(dmt);
return EEXIST;
}
if (((dmt = dm_target_lookup("snapshot-origin")) != NULL)) {
dm_target_unbusy(dmt);
return EEXIST;
}
dmt = dm_target_alloc("snapshot");
dmt1 = dm_target_alloc("snapshot-origin");
dmt->version[0] = 1;
dmt->version[1] = 0;
dmt->version[2] = 5;
strlcpy(dmt->name, "snapshot", DM_MAX_TYPE_NAME);
dmt->init = &dm_target_snapshot_init;
dmt->status = &dm_target_snapshot_status;
dmt->strategy = &dm_target_snapshot_strategy;
dmt->deps = &dm_target_snapshot_deps;
dmt->destroy = &dm_target_snapshot_destroy;
dmt->upcall = &dm_target_snapshot_upcall;
r = dm_target_insert(dmt);
dmt1->version[0] = 1;
dmt1->version[1] = 0;
dmt1->version[2] = 5;
strlcpy(dmt1->name, "snapshot-origin", DM_MAX_TYPE_NAME);
dmt1->init = &dm_target_snapshot_orig_init;
dmt1->status = &dm_target_snapshot_orig_status;
dmt1->strategy = &dm_target_snapshot_orig_strategy;
dmt1->sync = &dm_target_snapshot_orig_sync;
dmt1->deps = &dm_target_snapshot_orig_deps;
dmt1->destroy = &dm_target_snapshot_orig_destroy;
dmt1->upcall = &dm_target_snapshot_orig_upcall;
r = dm_target_insert(dmt1);
break;
case MODULE_CMD_FINI:
/*
* Try to remove snapshot target if it works remove snap-origin
* it is not possible to remove snapshot and do not remove
* snap-origin because they are used together.
*/
if ((r = dm_target_rem("snapshot")) == 0)
r = dm_target_rem("snapshot-origin");
break;
case MODULE_CMD_STAT:
return ENOTTY;
default:
return ENOTTY;
}
return r;
}
