/*
* Bring up the lockd process if it's not already up.
*/
int
lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */
{
struct svc_serv * serv;
int error = 0;
mutex_lock(&nlmsvc_mutex);
/*
* Check whether we're already up and running.
*/
if (nlmsvc_pid) {
if (proto)
error = make_socks(nlmsvc_serv, proto);
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;
}
if ((error = make_socks(serv, proto)) < 0)
goto destroy_and_out;
/*
* Create the kernel thread and wait for it to start.
*/
error = svc_create_thread(lockd, serv);
if (error) {
printk(KERN_WARNING
"lockd_up: create thread failed, error=%d\n", error);
goto destroy_and_out;
}
wait_for_completion(&lockd_start_done);
/*
* 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;
}
/*
* Bring up the lockd process if it's not already up.
*/
int
lockd_up(void)
{
static int warned;
struct svc_serv * serv;
int error = 0;
down(&nlmsvc_sema);
/*
* Unconditionally increment the user count ... this is
* the number of clients who _want_ a lockd process.
*/
nlmsvc_users++;
/*
* Check whether we're already up and running.
*/
if (nlmsvc_pid)
goto out;
/*
* Sanity check: if there's no pid,
* we should be the first user ...
*/
if (nlmsvc_users > 1)
printk(KERN_WARNING
"lockd_up: no pid, %d users??\n", nlmsvc_users);
error = -ENOMEM;
serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE);
if (!serv) {
printk(KERN_WARNING "lockd_up: create service failed\n");
goto out;
}
if ((error = svc_makesock(serv, IPPROTO_UDP, nlm_udpport)) < 0
#ifdef CONFIG_NFSD_TCP
|| (error = svc_makesock(serv, IPPROTO_TCP, nlm_tcpport)) < 0
#endif
) {
if (warned++ == 0)
printk(KERN_WARNING
"lockd_up: makesock failed, error=%d\n", error);
goto destroy_and_out;
}
warned = 0;
/*
* Create the kernel thread and wait for it to start.
*/
error = svc_create_thread(lockd, serv);
if (error) {
printk(KERN_WARNING
"lockd_up: create thread failed, error=%d\n", error);
goto destroy_and_out;
}
down(&lockd_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:
up(&nlmsvc_sema);
return error;
}
int
nfsd_svc(unsigned short port, int nrservs)
{
int error;
int none_left;
struct list_head *victim;
lock_kernel();
dprintk("nfsd: creating service\n");
error = -EINVAL;
if (nrservs <= 0)
nrservs = 0;
if (nrservs > NFSD_MAXSERVS)
nrservs = NFSD_MAXSERVS;
/* Readahead param cache - will no-op if it already exists */
error = nfsd_racache_init(2*nrservs);
nfs4_state_init();
if (error<0)
goto out;
if (!nfsd_serv) {
atomic_set(&nfsd_busy, 0);
error = -ENOMEM;
nfsd_serv = svc_create(&nfsd_program, NFSD_BUFSIZE);
if (nfsd_serv == NULL)
goto out;
error = svc_makesock(nfsd_serv, IPPROTO_UDP, port);
if (error < 0)
goto failure;
#ifdef CONFIG_NFSD_TCP
error = svc_makesock(nfsd_serv, IPPROTO_TCP, port);
if (error < 0)
goto failure;
#endif
do_gettimeofday(&nfssvc_boot); /* record boot time */
} else
nfsd_serv->sv_nrthreads++;
nrservs -= (nfsd_serv->sv_nrthreads-1);
while (nrservs > 0) {
nrservs--;
__module_get(THIS_MODULE);
error = svc_create_thread(nfsd, nfsd_serv);
if (error < 0) {
module_put(THIS_MODULE);
break;
}
}
victim = nfsd_list.next;
while (nrservs < 0 && victim != &nfsd_list) {
struct nfsd_list *nl =
list_entry(victim,struct nfsd_list, list);
victim = victim->next;
send_sig(SIG_NOCLEAN, nl->task, 1);
nrservs++;
}
failure:
none_left = (nfsd_serv->sv_nrthreads == 1);
svc_destroy(nfsd_serv); /* Release server */
if (none_left) {
nfsd_serv = NULL;
nfsd_racache_shutdown();
nfs4_state_shutdown();
}
out:
unlock_kernel();
return error;
}
