static name_info_t *
_internal_new_name(notify_state_t *ns, const char *name)
{
name_info_t *n;
size_t namelen;
if (ns == NULL) return NULL;
if (name == NULL) return NULL;
namelen = strlen(name) + 1;
n = (name_info_t *)calloc(1, sizeof(name_info_t) + namelen);
if (n == NULL) return NULL;
n->subscription_table = _nc_table_new(0);
if (n->subscription_table == NULL)
{
free(n);
return NULL;
}
n->name = (char *)n + sizeof(name_info_t);
memcpy(n->name, name, namelen);
n->name_id = name_id++;
n->access = NOTIFY_ACCESS_DEFAULT;
n->slot = (uint32_t)-1;
n->val = 1;
_nc_table_insert_no_copy(ns->name_table, n->name, n);
_nc_table_insert_64(ns->name_id_table, n->name_id, n);
return n;
}
static uint32_t
_internal_register_common(notify_state_t *ns, const char *name, pid_t pid, int token, uid_t uid, gid_t gid, client_t **outc)
{
client_t *c;
name_info_t *n;
int is_new_name;
uint32_t status;
if (ns == NULL) return NOTIFY_STATUS_FAILED;
if (name == NULL) return NOTIFY_STATUS_INVALID_NAME;
if (outc == NULL) return NOTIFY_STATUS_OK;
status = _internal_check_access(ns, name, uid, gid, NOTIFY_ACCESS_READ);
if (status != NOTIFY_STATUS_OK) return NOTIFY_STATUS_NOT_AUTHORIZED;
*outc = NULL;
is_new_name = 0;
n = (name_info_t *)_nc_table_find(ns->name_table, name);
if (n == NULL)
{
is_new_name = 1;
n = _internal_new_name(ns, name);
if (n == NULL) return NOTIFY_STATUS_FAILED;
}
c = _internal_client_new(ns, pid, token);
if (c == NULL)
{
if (is_new_name == 1)
{
_nc_table_delete(ns->name_table, n->name);
_nc_table_free(n->subscription_table);
free(n);
}
return NOTIFY_STATUS_FAILED;
}
n->refcount++;
c->name_info = n;
_nc_table_insert_64(n->subscription_table, c->client_id, c);
*outc = c;
return NOTIFY_STATUS_OK;
}
static client_t *
_internal_client_new(notify_state_t *ns, pid_t pid, int token)
{
client_t *c;
uint64_t cid = make_client_id(pid, token);
if (ns == NULL) return NULL;
/* detect duplicates - should never happen, but it would be bad */
c = _nc_table_find_64(ns->client_table, cid);
if (c != NULL) return NULL;
c = calloc(1, sizeof(client_t));
if (c == NULL) return NULL;
c->client_id = cid;
c->pid = pid;
c->send_val = token;
_nc_table_insert_64(ns->client_table, cid, c);
return c;
}
void
_nc_table_insert_n(table_t *tin, uint32_t key, void *datum)
{
uint64_t n64 = key;
_nc_table_insert_64(tin, n64, datum);
}
