[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/lockd/svc.c b/src/kernel/linux/v4.14/fs/lockd/svc.c
new file mode 100644
index 0000000..da2825a
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/lockd/svc.c
@@ -0,0 +1,799 @@
+/*
+ * linux/fs/lockd/svc.c
+ *
+ * This is the central lockd service.
+ *
+ * FIXME: Separate the lockd NFS server functionality from the lockd NFS
+ * client functionality. Oh why didn't Sun create two separate
+ * services in the first place?
+ *
+ * Authors: Olaf Kirch (okir@monad.swb.de)
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sysctl.h>
+#include <linux/moduleparam.h>
+
+#include <linux/sched/signal.h>
+#include <linux/errno.h>
+#include <linux/in.h>
+#include <linux/uio.h>
+#include <linux/smp.h>
+#include <linux/mutex.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/inetdevice.h>
+
+#include <linux/sunrpc/types.h>
+#include <linux/sunrpc/stats.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/svcsock.h>
+#include <linux/sunrpc/svc_xprt.h>
+#include <net/ip.h>
+#include <net/addrconf.h>
+#include <net/ipv6.h>
+#include <linux/lockd/lockd.h>
+#include <linux/nfs.h>
+
+#include "netns.h"
+#include "procfs.h"
+
+#define NLMDBG_FACILITY NLMDBG_SVC
+#define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE)
+#define ALLOWED_SIGS (sigmask(SIGKILL))
+
+static struct svc_program nlmsvc_program;
+
+const struct nlmsvc_binding *nlmsvc_ops;
+EXPORT_SYMBOL_GPL(nlmsvc_ops);
+
+static DEFINE_MUTEX(nlmsvc_mutex);
+static unsigned int nlmsvc_users;
+static struct task_struct *nlmsvc_task;
+static struct svc_rqst *nlmsvc_rqst;
+unsigned long nlmsvc_timeout;
+
+atomic_t nlm_ntf_refcnt = ATOMIC_INIT(0);
+DECLARE_WAIT_QUEUE_HEAD(nlm_ntf_wq);
+
+unsigned int lockd_net_id;
+
+/*
+ * These can be set at insmod time (useful for NFS as root filesystem),
+ * and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003
+ */
+static unsigned long nlm_grace_period;
+static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO;
+static int nlm_udpport, nlm_tcpport;
+
+/* RLIM_NOFILE defaults to 1024. That seems like a reasonable default here. */
+static unsigned int nlm_max_connections = 1024;
+
+/*
+ * Constants needed for the sysctl interface.
+ */
+static const unsigned long nlm_grace_period_min = 0;
+static const unsigned long nlm_grace_period_max = 240;
+static const unsigned long nlm_timeout_min = 3;
+static const unsigned long nlm_timeout_max = 20;
+static const int nlm_port_min = 0, nlm_port_max = 65535;
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table_header * nlm_sysctl_table;
+#endif
+
+static unsigned long get_lockd_grace_period(void)
+{
+ /* Note: nlm_timeout should always be nonzero */
+ if (nlm_grace_period)
+ return roundup(nlm_grace_period, nlm_timeout) * HZ;
+ else
+ return nlm_timeout * 5 * HZ;
+}
+
+static void grace_ender(struct work_struct *grace)
+{
+ struct delayed_work *dwork = to_delayed_work(grace);
+ struct lockd_net *ln = container_of(dwork, struct lockd_net,
+ grace_period_end);
+
+ locks_end_grace(&ln->lockd_manager);
+}
+
+static void set_grace_period(struct net *net)
+{
+ unsigned long grace_period = get_lockd_grace_period();
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ locks_start_grace(net, &ln->lockd_manager);
+ cancel_delayed_work_sync(&ln->grace_period_end);
+ schedule_delayed_work(&ln->grace_period_end, grace_period);
+}
+
+static void restart_grace(void)
+{
+ if (nlmsvc_ops) {
+ struct net *net = &init_net;
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ cancel_delayed_work_sync(&ln->grace_period_end);
+ locks_end_grace(&ln->lockd_manager);
+ nlmsvc_invalidate_all();
+ set_grace_period(net);
+ }
+}
+
+/*
+ * This is the lockd kernel thread
+ */
+static int
+lockd(void *vrqstp)
+{
+ int err = 0;
+ struct svc_rqst *rqstp = vrqstp;
+ struct net *net = &init_net;
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ /* try_to_freeze() is called from svc_recv() */
+ set_freezable();
+
+ /* Allow SIGKILL to tell lockd to drop all of its locks */
+ allow_signal(SIGKILL);
+
+ dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n");
+
+ /*
+ * The main request loop. We don't terminate until the last
+ * NFS mount or NFS daemon has gone away.
+ */
+ while (!kthread_should_stop()) {
+ long timeout = MAX_SCHEDULE_TIMEOUT;
+ RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
+
+ /* update sv_maxconn if it has changed */
+ rqstp->rq_server->sv_maxconn = nlm_max_connections;
+
+ if (signalled()) {
+ flush_signals(current);
+ restart_grace();
+ continue;
+ }
+
+ timeout = nlmsvc_retry_blocked();
+
+ /*
+ * Find a socket with data available and call its
+ * recvfrom routine.
+ */
+ err = svc_recv(rqstp, timeout);
+ if (err == -EAGAIN || err == -EINTR)
+ continue;
+ dprintk("lockd: request from %s\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
+
+ svc_process(rqstp);
+ }
+ flush_signals(current);
+ if (nlmsvc_ops)
+ nlmsvc_invalidate_all();
+ nlm_shutdown_hosts();
+ cancel_delayed_work_sync(&ln->grace_period_end);
+ locks_end_grace(&ln->lockd_manager);
+ return 0;
+}
+
+static int create_lockd_listener(struct svc_serv *serv, const char *name,
+ struct net *net, const int family,
+ const unsigned short port)
+{
+ struct svc_xprt *xprt;
+
+ xprt = svc_find_xprt(serv, name, net, family, 0);
+ if (xprt == NULL)
+ return svc_create_xprt(serv, name, net, family, port,
+ SVC_SOCK_DEFAULTS);
+ svc_xprt_put(xprt);
+ return 0;
+}
+
+static int create_lockd_family(struct svc_serv *serv, struct net *net,
+ const int family)
+{
+ int err;
+
+ err = create_lockd_listener(serv, "udp", net, family, nlm_udpport);
+ if (err < 0)
+ return err;
+
+ return create_lockd_listener(serv, "tcp", net, family, nlm_tcpport);
+}
+
+/*
+ * Ensure there are active UDP and TCP listeners for lockd.
+ *
+ * Even if we have only TCP NFS mounts and/or TCP NFSDs, some
+ * local services (such as rpc.statd) still require UDP, and
+ * some NFS servers do not yet support NLM over TCP.
+ *
+ * Returns zero if all listeners are available; otherwise a
+ * negative errno value is returned.
+ */
+static int make_socks(struct svc_serv *serv, struct net *net)
+{
+ static int warned;
+ int err;
+
+ err = create_lockd_family(serv, net, PF_INET);
+ if (err < 0)
+ goto out_err;
+
+ err = create_lockd_family(serv, net, PF_INET6);
+ if (err < 0 && err != -EAFNOSUPPORT)
+ goto out_err;
+
+ warned = 0;
+ return 0;
+
+out_err:
+ if (warned++ == 0)
+ printk(KERN_WARNING
+ "lockd_up: makesock failed, error=%d\n", err);
+ svc_shutdown_net(serv, net);
+ return err;
+}
+
+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("lockd_up_net: per-net data created; net=%p\n", net);
+ return 0;
+
+err_bind:
+ ln->nlmsvc_users--;
+ return error;
+}
+
+static void lockd_down_net(struct svc_serv *serv, struct net *net)
+{
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ if (ln->nlmsvc_users) {
+ if (--ln->nlmsvc_users == 0) {
+ nlm_shutdown_hosts_net(net);
+ cancel_delayed_work_sync(&ln->grace_period_end);
+ locks_end_grace(&ln->lockd_manager);
+ svc_shutdown_net(serv, net);
+ dprintk("lockd_down_net: per-net data destroyed; net=%p\n", net);
+ }
+ } else {
+ printk(KERN_ERR "lockd_down_net: no users! task=%p, net=%p\n",
+ nlmsvc_task, net);
+ BUG();
+ }
+}
+
+static int lockd_inetaddr_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+ struct sockaddr_in sin;
+
+ if ((event != NETDEV_DOWN) ||
+ !atomic_inc_not_zero(&nlm_ntf_refcnt))
+ goto out;
+
+ if (nlmsvc_rqst) {
+ dprintk("lockd_inetaddr_event: removed %pI4\n",
+ &ifa->ifa_local);
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = ifa->ifa_local;
+ svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,
+ (struct sockaddr *)&sin);
+ }
+ atomic_dec(&nlm_ntf_refcnt);
+ wake_up(&nlm_ntf_wq);
+
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block lockd_inetaddr_notifier = {
+ .notifier_call = lockd_inetaddr_event,
+};
+
+#if IS_ENABLED(CONFIG_IPV6)
+static int lockd_inet6addr_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
+ struct sockaddr_in6 sin6;
+
+ if ((event != NETDEV_DOWN) ||
+ !atomic_inc_not_zero(&nlm_ntf_refcnt))
+ goto out;
+
+ if (nlmsvc_rqst) {
+ dprintk("lockd_inet6addr_event: removed %pI6\n", &ifa->addr);
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_addr = ifa->addr;
+ if (ipv6_addr_type(&sin6.sin6_addr) & IPV6_ADDR_LINKLOCAL)
+ sin6.sin6_scope_id = ifa->idev->dev->ifindex;
+ svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,
+ (struct sockaddr *)&sin6);
+ }
+ atomic_dec(&nlm_ntf_refcnt);
+ wake_up(&nlm_ntf_wq);
+
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block lockd_inet6addr_notifier = {
+ .notifier_call = lockd_inet6addr_event,
+};
+#endif
+
+static void lockd_unregister_notifiers(void)
+{
+ unregister_inetaddr_notifier(&lockd_inetaddr_notifier);
+#if IS_ENABLED(CONFIG_IPV6)
+ unregister_inet6addr_notifier(&lockd_inet6addr_notifier);
+#endif
+ wait_event(nlm_ntf_wq, atomic_read(&nlm_ntf_refcnt) == 0);
+}
+
+static void lockd_svc_exit_thread(void)
+{
+ atomic_dec(&nlm_ntf_refcnt);
+ lockd_unregister_notifiers();
+ svc_exit_thread(nlmsvc_rqst);
+}
+
+static int lockd_start_svc(struct svc_serv *serv)
+{
+ int error;
+
+ if (nlmsvc_rqst)
+ return 0;
+
+ /*
+ * 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);
+ printk(KERN_WARNING
+ "lockd_up: svc_rqst allocation failed, error=%d\n",
+ error);
+ lockd_unregister_notifiers();
+ goto out_rqst;
+ }
+
+ atomic_inc(&nlm_ntf_refcnt);
+ svc_sock_update_bufs(serv);
+ serv->sv_maxconn = nlm_max_connections;
+
+ nlmsvc_task = kthread_create(lockd, nlmsvc_rqst, "%s", serv->sv_name);
+ if (IS_ERR(nlmsvc_task)) {
+ error = PTR_ERR(nlmsvc_task);
+ printk(KERN_WARNING
+ "lockd_up: kthread_run failed, error=%d\n", error);
+ goto out_task;
+ }
+ nlmsvc_rqst->rq_task = nlmsvc_task;
+ wake_up_process(nlmsvc_task);
+
+ dprintk("lockd_up: service started\n");
+ return 0;
+
+out_task:
+ lockd_svc_exit_thread();
+ nlmsvc_task = NULL;
+out_rqst:
+ nlmsvc_rqst = NULL;
+ return error;
+}
+
+static const struct svc_serv_ops lockd_sv_ops = {
+ .svo_shutdown = svc_rpcb_cleanup,
+ .svo_enqueue_xprt = svc_xprt_do_enqueue,
+};
+
+static struct svc_serv *lockd_create_svc(void)
+{
+ struct svc_serv *serv;
+
+ /*
+ * Check whether we're already up and running.
+ */
+ if (nlmsvc_rqst) {
+ /*
+ * Note: increase service usage, because later in case of error
+ * svc_destroy() will be called.
+ */
+ svc_get(nlmsvc_rqst->rq_server);
+ return nlmsvc_rqst->rq_server;
+ }
+
+ /*
+ * 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);
+
+ if (!nlm_timeout)
+ nlm_timeout = LOCKD_DFLT_TIMEO;
+ nlmsvc_timeout = nlm_timeout * HZ;
+
+ serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, &lockd_sv_ops);
+ if (!serv) {
+ printk(KERN_WARNING "lockd_up: create service failed\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ register_inetaddr_notifier(&lockd_inetaddr_notifier);
+#if IS_ENABLED(CONFIG_IPV6)
+ register_inet6addr_notifier(&lockd_inet6addr_notifier);
+#endif
+ dprintk("lockd_up: service created\n");
+ return serv;
+}
+
+/*
+ * Bring up the lockd process if it's not already up.
+ */
+int lockd_up(struct net *net)
+{
+ struct svc_serv *serv;
+ int error;
+
+ mutex_lock(&nlmsvc_mutex);
+
+ serv = lockd_create_svc();
+ if (IS_ERR(serv)) {
+ error = PTR_ERR(serv);
+ goto err_create;
+ }
+
+ error = lockd_up_net(serv, net);
+ if (error < 0) {
+ lockd_unregister_notifiers();
+ goto err_put;
+ }
+
+ error = lockd_start_svc(serv);
+ if (error < 0) {
+ lockd_down_net(serv, net);
+ goto err_put;
+ }
+ nlmsvc_users++;
+ /*
+ * Note: svc_serv structures have an initial use count of 1,
+ * so we exit through here on both success and failure.
+ */
+err_put:
+ svc_destroy(serv);
+err_create:
+ mutex_unlock(&nlmsvc_mutex);
+ return error;
+}
+EXPORT_SYMBOL_GPL(lockd_up);
+
+/*
+ * Decrement the user count and bring down lockd if we're the last.
+ */
+void
+lockd_down(struct net *net)
+{
+ mutex_lock(&nlmsvc_mutex);
+ lockd_down_net(nlmsvc_rqst->rq_server, net);
+ if (nlmsvc_users) {
+ if (--nlmsvc_users)
+ goto out;
+ } else {
+ printk(KERN_ERR "lockd_down: no users! task=%p\n",
+ nlmsvc_task);
+ BUG();
+ }
+
+ if (!nlmsvc_task) {
+ printk(KERN_ERR "lockd_down: no lockd running.\n");
+ BUG();
+ }
+ kthread_stop(nlmsvc_task);
+ dprintk("lockd_down: service stopped\n");
+ lockd_svc_exit_thread();
+ dprintk("lockd_down: service destroyed\n");
+ nlmsvc_task = NULL;
+ nlmsvc_rqst = NULL;
+out:
+ mutex_unlock(&nlmsvc_mutex);
+}
+EXPORT_SYMBOL_GPL(lockd_down);
+
+#ifdef CONFIG_SYSCTL
+
+/*
+ * Sysctl parameters (same as module parameters, different interface).
+ */
+
+static struct ctl_table nlm_sysctls[] = {
+ {
+ .procname = "nlm_grace_period",
+ .data = &nlm_grace_period,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ .extra1 = (unsigned long *) &nlm_grace_period_min,
+ .extra2 = (unsigned long *) &nlm_grace_period_max,
+ },
+ {
+ .procname = "nlm_timeout",
+ .data = &nlm_timeout,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ .extra1 = (unsigned long *) &nlm_timeout_min,
+ .extra2 = (unsigned long *) &nlm_timeout_max,
+ },
+ {
+ .procname = "nlm_udpport",
+ .data = &nlm_udpport,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (int *) &nlm_port_min,
+ .extra2 = (int *) &nlm_port_max,
+ },
+ {
+ .procname = "nlm_tcpport",
+ .data = &nlm_tcpport,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (int *) &nlm_port_min,
+ .extra2 = (int *) &nlm_port_max,
+ },
+ {
+ .procname = "nsm_use_hostnames",
+ .data = &nsm_use_hostnames,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .procname = "nsm_local_state",
+ .data = &nsm_local_state,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ { }
+};
+
+static struct ctl_table nlm_sysctl_dir[] = {
+ {
+ .procname = "nfs",
+ .mode = 0555,
+ .child = nlm_sysctls,
+ },
+ { }
+};
+
+static struct ctl_table nlm_sysctl_root[] = {
+ {
+ .procname = "fs",
+ .mode = 0555,
+ .child = nlm_sysctl_dir,
+ },
+ { }
+};
+
+#endif /* CONFIG_SYSCTL */
+
+/*
+ * Module (and sysfs) parameters.
+ */
+
+#define param_set_min_max(name, type, which_strtol, min, max) \
+static int param_set_##name(const char *val, const struct kernel_param *kp) \
+{ \
+ char *endp; \
+ __typeof__(type) num = which_strtol(val, &endp, 0); \
+ if (endp == val || *endp || num < (min) || num > (max)) \
+ return -EINVAL; \
+ *((type *) kp->arg) = num; \
+ return 0; \
+}
+
+static inline int is_callback(u32 proc)
+{
+ return proc == NLMPROC_GRANTED
+ || proc == NLMPROC_GRANTED_MSG
+ || proc == NLMPROC_TEST_RES
+ || proc == NLMPROC_LOCK_RES
+ || proc == NLMPROC_CANCEL_RES
+ || proc == NLMPROC_UNLOCK_RES
+ || proc == NLMPROC_NSM_NOTIFY;
+}
+
+
+static int lockd_authenticate(struct svc_rqst *rqstp)
+{
+ rqstp->rq_client = NULL;
+ switch (rqstp->rq_authop->flavour) {
+ case RPC_AUTH_NULL:
+ case RPC_AUTH_UNIX:
+ if (rqstp->rq_proc == 0)
+ return SVC_OK;
+ if (is_callback(rqstp->rq_proc)) {
+ /* Leave it to individual procedures to
+ * call nlmsvc_lookup_host(rqstp)
+ */
+ return SVC_OK;
+ }
+ return svc_set_client(rqstp);
+ }
+ return SVC_DENIED;
+}
+
+
+param_set_min_max(port, int, simple_strtol, 0, 65535)
+param_set_min_max(grace_period, unsigned long, simple_strtoul,
+ nlm_grace_period_min, nlm_grace_period_max)
+param_set_min_max(timeout, unsigned long, simple_strtoul,
+ nlm_timeout_min, nlm_timeout_max)
+
+MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
+MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION ".");
+MODULE_LICENSE("GPL");
+
+module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong,
+ &nlm_grace_period, 0644);
+module_param_call(nlm_timeout, param_set_timeout, param_get_ulong,
+ &nlm_timeout, 0644);
+module_param_call(nlm_udpport, param_set_port, param_get_int,
+ &nlm_udpport, 0644);
+module_param_call(nlm_tcpport, param_set_port, param_get_int,
+ &nlm_tcpport, 0644);
+module_param(nsm_use_hostnames, bool, 0644);
+module_param(nlm_max_connections, uint, 0644);
+
+static int lockd_init_net(struct net *net)
+{
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
+
+ INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender);
+ INIT_LIST_HEAD(&ln->lockd_manager.list);
+ ln->lockd_manager.block_opens = false;
+ INIT_LIST_HEAD(&ln->nsm_handles);
+ return 0;
+}
+
+static void lockd_exit_net(struct net *net)
+{
+}
+
+static struct pernet_operations lockd_net_ops = {
+ .init = lockd_init_net,
+ .exit = lockd_exit_net,
+ .id = &lockd_net_id,
+ .size = sizeof(struct lockd_net),
+};
+
+
+/*
+ * Initialising and terminating the module.
+ */
+
+static int __init init_nlm(void)
+{
+ int err;
+
+#ifdef CONFIG_SYSCTL
+ err = -ENOMEM;
+ nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root);
+ if (nlm_sysctl_table == NULL)
+ goto err_sysctl;
+#endif
+ err = register_pernet_subsys(&lockd_net_ops);
+ if (err)
+ goto err_pernet;
+
+ err = lockd_create_procfs();
+ if (err)
+ goto err_procfs;
+
+ return 0;
+
+err_procfs:
+ unregister_pernet_subsys(&lockd_net_ops);
+err_pernet:
+#ifdef CONFIG_SYSCTL
+ unregister_sysctl_table(nlm_sysctl_table);
+err_sysctl:
+#endif
+ return err;
+}
+
+static void __exit exit_nlm(void)
+{
+ /* FIXME: delete all NLM clients */
+ nlm_shutdown_hosts();
+ lockd_remove_procfs();
+ unregister_pernet_subsys(&lockd_net_ops);
+#ifdef CONFIG_SYSCTL
+ unregister_sysctl_table(nlm_sysctl_table);
+#endif
+}
+
+module_init(init_nlm);
+module_exit(exit_nlm);
+
+/*
+ * Define NLM program and procedures
+ */
+static unsigned int nlmsvc_version1_count[17];
+static const struct svc_version nlmsvc_version1 = {
+ .vs_vers = 1,
+ .vs_nproc = 17,
+ .vs_proc = nlmsvc_procedures,
+ .vs_count = nlmsvc_version1_count,
+ .vs_xdrsize = NLMSVC_XDRSIZE,
+};
+static unsigned int nlmsvc_version3_count[24];
+static const struct svc_version nlmsvc_version3 = {
+ .vs_vers = 3,
+ .vs_nproc = 24,
+ .vs_proc = nlmsvc_procedures,
+ .vs_count = nlmsvc_version3_count,
+ .vs_xdrsize = NLMSVC_XDRSIZE,
+};
+#ifdef CONFIG_LOCKD_V4
+static unsigned int nlmsvc_version4_count[24];
+static const struct svc_version nlmsvc_version4 = {
+ .vs_vers = 4,
+ .vs_nproc = 24,
+ .vs_proc = nlmsvc_procedures4,
+ .vs_count = nlmsvc_version4_count,
+ .vs_xdrsize = NLMSVC_XDRSIZE,
+};
+#endif
+static const struct svc_version *nlmsvc_version[] = {
+ [1] = &nlmsvc_version1,
+ [3] = &nlmsvc_version3,
+#ifdef CONFIG_LOCKD_V4
+ [4] = &nlmsvc_version4,
+#endif
+};
+
+static struct svc_stat nlmsvc_stats;
+
+#define NLM_NRVERS ARRAY_SIZE(nlmsvc_version)
+static struct svc_program nlmsvc_program = {
+ .pg_prog = NLM_PROGRAM, /* program number */
+ .pg_nvers = NLM_NRVERS, /* number of entries in nlmsvc_version */
+ .pg_vers = nlmsvc_version, /* version table */
+ .pg_name = "lockd", /* service name */
+ .pg_class = "nfsd", /* share authentication with nfsd */
+ .pg_stats = &nlmsvc_stats, /* stats table */
+ .pg_authenticate = &lockd_authenticate /* export authentication */
+};