* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sysctl.h>
#include <linux/slab.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
+#include <linux/mutex.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 <net/ip.h>
#include <linux/lockd/lockd.h>
+#include <linux/lockd/sm_inter.h>
#include <linux/nfs.h>
#define NLMDBG_FACILITY NLMDBG_SVC
struct nlmsvc_binding * nlmsvc_ops;
EXPORT_SYMBOL(nlmsvc_ops);
-static DECLARE_MUTEX(nlmsvc_sema);
+static DEFINE_MUTEX(nlmsvc_mutex);
static unsigned int nlmsvc_users;
static pid_t nlmsvc_pid;
+static struct svc_serv *nlmsvc_serv;
int nlmsvc_grace_period;
unsigned long nlmsvc_timeout;
-static DECLARE_MUTEX_LOCKED(lockd_start);
+static DECLARE_COMPLETION(lockd_start_done);
static DECLARE_WAIT_QUEUE_HEAD(lockd_exit);
/*
static unsigned long nlm_grace_period;
static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO;
static int nlm_udpport, nlm_tcpport;
+int nsm_use_hostnames = 0;
/*
* Constants needed for the sysctl interface.
static void
lockd(struct svc_rqst *rqstp)
{
- struct svc_serv *serv = rqstp->rq_server;
int err = 0;
unsigned long grace_period_expire;
* Let our maker know we're running.
*/
nlmsvc_pid = current->pid;
- up(&lockd_start);
+ nlmsvc_serv = rqstp->rq_server;
+ complete(&lockd_start_done);
daemonize("lockd");
* Find a socket with data available and call its
* recvfrom routine.
*/
- err = svc_recv(serv, rqstp, timeout);
+ err = svc_recv(rqstp, timeout);
if (err == -EAGAIN || err == -EINTR)
continue;
if (err < 0) {
dprintk("lockd: request from %08x\n",
(unsigned)ntohl(rqstp->rq_addr.sin_addr.s_addr));
- svc_process(serv, rqstp);
+ svc_process(rqstp);
}
+ flush_signals(current);
+
/*
* Check whether there's a new lockd process before
* shutting down the hosts and clearing the slot.
nlmsvc_invalidate_all();
nlm_shutdown_hosts();
nlmsvc_pid = 0;
+ nlmsvc_serv = NULL;
} else
printk(KERN_DEBUG
"lockd: new process, skipping host shutdown\n");
wake_up(&lockd_exit);
-
+
/* Exit the RPC thread */
svc_exit_thread(rqstp);
module_put_and_exit(0);
}
+
+static int find_socket(struct svc_serv *serv, int proto)
+{
+ struct svc_sock *svsk;
+ int found = 0;
+ list_for_each_entry(svsk, &serv->sv_permsocks, sk_list)
+ if (svsk->sk_sk->sk_protocol == proto) {
+ found = 1;
+ break;
+ }
+ return found;
+}
+
+static int make_socks(struct svc_serv *serv, int proto)
+{
+ /* Make any sockets that are needed but not present.
+ * If nlm_udpport or nlm_tcpport were set as module
+ * options, make those sockets unconditionally
+ */
+ static int warned;
+ int err = 0;
+ if (proto == IPPROTO_UDP || nlm_udpport)
+ if (!find_socket(serv, IPPROTO_UDP))
+ err = svc_makesock(serv, IPPROTO_UDP, nlm_udpport);
+ if (err == 0 && (proto == IPPROTO_TCP || nlm_tcpport))
+ if (!find_socket(serv, IPPROTO_TCP))
+ err= svc_makesock(serv, IPPROTO_TCP, nlm_tcpport);
+ if (!err)
+ warned = 0;
+ else if (warned++ == 0)
+ printk(KERN_WARNING
+ "lockd_up: makesock failed, error=%d\n", err);
+ return err;
+}
+
/*
* Bring up the lockd process if it's not already up.
*/
int
-lockd_up(void)
+lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */
{
- 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++;
+ mutex_lock(&nlmsvc_mutex);
/*
* Check whether we're already up and running.
*/
- if (nlmsvc_pid)
+ 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 > 1)
+ if (nlmsvc_users)
printk(KERN_WARNING
"lockd_up: no pid, %d users??\n", nlmsvc_users);
error = -ENOMEM;
- serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE);
+ serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
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);
+ if ((error = make_socks(serv, proto)) < 0)
goto destroy_and_out;
- }
- warned = 0;
/*
* Create the kernel thread and wait for it to start.
"lockd_up: create thread failed, error=%d\n", error);
goto destroy_and_out;
}
- down(&lockd_start);
+ wait_for_completion(&lockd_start_done);
/*
* Note: svc_serv structures have an initial use count of 1,
destroy_and_out:
svc_destroy(serv);
out:
- up(&nlmsvc_sema);
+ if (!error)
+ nlmsvc_users++;
+ mutex_unlock(&nlmsvc_mutex);
return error;
}
EXPORT_SYMBOL(lockd_up);
{
static int warned;
- down(&nlmsvc_sema);
+ mutex_lock(&nlmsvc_mutex);
if (nlmsvc_users) {
if (--nlmsvc_users)
goto out;
* the lockd semaphore, we can't wait around forever ...
*/
clear_thread_flag(TIF_SIGPENDING);
- interruptible_sleep_on_timeout(&lockd_exit, HZ);
+ wait_event_timeout(lockd_exit, nlmsvc_pid == 0, HZ);
if (nlmsvc_pid) {
printk(KERN_WARNING
"lockd_down: lockd failed to exit, clearing pid\n");
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
out:
- up(&nlmsvc_sema);
+ mutex_unlock(&nlmsvc_mutex);
}
EXPORT_SYMBOL(lockd_down);
* Sysctl parameters (same as module parameters, different interface).
*/
-/* Something that isn't CTL_ANY, CTL_NONE or a value that may clash. */
-#define CTL_UNNUMBERED -2
-
static ctl_table nlm_sysctls[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "nlm_grace_period",
.data = &nlm_grace_period,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
.extra1 = (unsigned long *) &nlm_grace_period_min,
.ctl_name = CTL_UNNUMBERED,
.procname = "nlm_timeout",
.data = &nlm_timeout,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
.extra1 = (unsigned long *) &nlm_timeout_min,
.extra1 = (int *) &nlm_port_min,
.extra2 = (int *) &nlm_port_max,
},
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "nsm_use_hostnames",
+ .data = &nsm_use_hostnames,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "nsm_local_state",
+ .data = &nsm_local_state,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
{ .ctl_name = 0 }
};
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)
&nlm_udpport, 0644);
module_param_call(nlm_tcpport, param_set_port, param_get_int,
&nlm_tcpport, 0644);
+module_param(nsm_use_hostnames, bool, 0644);
/*
* Initialising and terminating the module.
static struct svc_stat nlmsvc_stats;
-#define NLM_NRVERS (sizeof(nlmsvc_version)/sizeof(nlmsvc_version[0]))
+#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_name = "lockd", /* service name */
.pg_class = "nfsd", /* share authentication with nfsd */
.pg_stats = &nlmsvc_stats, /* stats table */
+ .pg_authenticate = &lockd_authenticate /* export authentication */
};
git://git.onelab.eu / linux-2.6.git / blobdiff