static int lockd_up_net(struct svc_serv *serv, struct net *net)
{
struct lockd_net *ln = net_generic(net, lockd_net_id);
int error;
if (ln->nlmsvc_users++)
return 0;
error = svc_bind(serv, net);
if (error)
goto err_bind;
error = make_socks(serv, net);
if (error < 0)
goto err_socks;
set_grace_period(net);
dprintk("lockd_up_net: per-net data created; net=%p\n", net);
return 0;
err_socks:
svc_rpcb_cleanup(serv, net);
err_bind:
ln->nlmsvc_users--;
return error;
}
static int lockd_up_net(struct svc_serv *serv, struct net *net)
{
struct lockd_net *ln = net_generic(net, lockd_net_id);
int error;
if (ln->nlmsvc_users++)
return 0;
error = svc_bind(serv, net);
if (error)
goto err_bind;
error = make_socks(serv, net);
if (error < 0)
goto err_bind;
set_grace_period(net);
dprintk("%s: per-net data created; net=%x\n", __func__, net->ns.inum);
return 0;
err_bind:
ln->nlmsvc_users--;
return error;
}
int lockd_up(struct net *net)
{
struct svc_serv *serv;
int error = 0;
struct lockd_net *ln = net_generic(net, lockd_net_id);
mutex_lock(&nlmsvc_mutex);
if (nlmsvc_rqst) {
error = lockd_up_net(nlmsvc_rqst->rq_server, net);
goto out;
}
if (nlmsvc_users)
printk(KERN_WARNING
"lockd_up: no pid, %d users??\n", nlmsvc_users);
error = -ENOMEM;
serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
if (!serv) {
printk(KERN_WARNING "lockd_up: create service failed\n");
goto out;
}
error = svc_bind(serv, net);
if (error < 0) {
printk(KERN_WARNING "lockd_up: bind service failed\n");
goto destroy_and_out;
}
ln->nlmsvc_users++;
error = make_socks(serv, net);
if (error < 0)
goto err_start;
nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
if (IS_ERR(nlmsvc_rqst)) {
error = PTR_ERR(nlmsvc_rqst);
nlmsvc_rqst = NULL;
printk(KERN_WARNING
"lockd_up: svc_rqst allocation failed, error=%d\n",
error);
goto err_start;
}
svc_sock_update_bufs(serv);
serv->sv_maxconn = nlm_max_connections;
nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, serv->sv_name);
if (IS_ERR(nlmsvc_task)) {
error = PTR_ERR(nlmsvc_task);
svc_exit_thread(nlmsvc_rqst);
nlmsvc_task = NULL;
nlmsvc_rqst = NULL;
printk(KERN_WARNING
"lockd_up: kthread_run failed, error=%d\n", error);
goto err_start;
}
destroy_and_out:
svc_destroy(serv);
out:
if (!error)
nlmsvc_users++;
mutex_unlock(&nlmsvc_mutex);
return error;
err_start:
lockd_down_net(serv, net);
goto destroy_and_out;
}
/*
* Bring up the lockd process if it's not already up.
*/
int lockd_up(struct net *net)
{
struct svc_serv *serv;
int error = 0;
struct lockd_net *ln = net_generic(net, lockd_net_id);
mutex_lock(&nlmsvc_mutex);
/*
* Check whether we're already up and running.
*/
if (nlmsvc_rqst) {
error = lockd_up_net(net);
goto out;
}
/*
* Sanity check: if there's no pid,
* we should be the first user ...
*/
if (nlmsvc_users)
printk(KERN_WARNING
"lockd_up: no pid, %d users??\n", nlmsvc_users);
error = -ENOMEM;
serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
if (!serv) {
printk(KERN_WARNING "lockd_up: create service failed\n");
goto out;
}
error = svc_bind(serv, net);
if (error < 0) {
printk(KERN_WARNING "lockd_up: bind service failed\n");
goto destroy_and_out;
}
ln->nlmsvc_users++;
error = make_socks(serv, net);
if (error < 0)
goto err_start;
/*
* Create the kernel thread and wait for it to start.
*/
nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
if (IS_ERR(nlmsvc_rqst)) {
error = PTR_ERR(nlmsvc_rqst);
nlmsvc_rqst = NULL;
printk(KERN_WARNING
"lockd_up: svc_rqst allocation failed, error=%d\n",
error);
goto err_start;
}
svc_sock_update_bufs(serv);
serv->sv_maxconn = nlm_max_connections;
nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, serv->sv_name);
if (IS_ERR(nlmsvc_task)) {
error = PTR_ERR(nlmsvc_task);
svc_exit_thread(nlmsvc_rqst);
nlmsvc_task = NULL;
nlmsvc_rqst = NULL;
printk(KERN_WARNING
"lockd_up: kthread_run failed, error=%d\n", error);
goto err_start;
}
/*
* Note: svc_serv structures have an initial use count of 1,
* so we exit through here on both success and failure.
*/
destroy_and_out:
svc_destroy(serv);
out:
if (!error)
nlmsvc_users++;
mutex_unlock(&nlmsvc_mutex);
return error;
err_start:
lockd_down_net(net);
goto destroy_and_out;
}
