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-rw-r--r--net/sunrpc/svc.c98
1 files changed, 60 insertions, 38 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index e4aabc02368..4153846984a 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -20,6 +20,7 @@
#include <linux/module.h>
#include <linux/kthread.h>
#include <linux/slab.h>
+#include <linux/nsproxy.h>
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/xdr.h>
@@ -30,7 +31,7 @@
#define RPCDBG_FACILITY RPCDBG_SVCDSP
-static void svc_unregister(const struct svc_serv *serv);
+static void svc_unregister(const struct svc_serv *serv, struct net *net);
#define svc_serv_is_pooled(serv) ((serv)->sv_function)
@@ -368,23 +369,24 @@ svc_pool_for_cpu(struct svc_serv *serv, int cpu)
return &serv->sv_pools[pidx % serv->sv_nrpools];
}
-static int svc_rpcb_setup(struct svc_serv *serv)
+int svc_rpcb_setup(struct svc_serv *serv, struct net *net)
{
int err;
- err = rpcb_create_local();
+ err = rpcb_create_local(net);
if (err)
return err;
/* Remove any stale portmap registrations */
- svc_unregister(serv);
+ svc_unregister(serv, net);
return 0;
}
+EXPORT_SYMBOL_GPL(svc_rpcb_setup);
-void svc_rpcb_cleanup(struct svc_serv *serv)
+void svc_rpcb_cleanup(struct svc_serv *serv, struct net *net)
{
- svc_unregister(serv);
- rpcb_put_local();
+ svc_unregister(serv, net);
+ rpcb_put_local(net);
}
EXPORT_SYMBOL_GPL(svc_rpcb_cleanup);
@@ -410,7 +412,7 @@ static int svc_uses_rpcbind(struct svc_serv *serv)
*/
static struct svc_serv *
__svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
- void (*shutdown)(struct svc_serv *serv))
+ void (*shutdown)(struct svc_serv *serv, struct net *net))
{
struct svc_serv *serv;
unsigned int vers;
@@ -470,7 +472,7 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
}
if (svc_uses_rpcbind(serv)) {
- if (svc_rpcb_setup(serv) < 0) {
+ if (svc_rpcb_setup(serv, current->nsproxy->net_ns) < 0) {
kfree(serv->sv_pools);
kfree(serv);
return NULL;
@@ -484,7 +486,7 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
struct svc_serv *
svc_create(struct svc_program *prog, unsigned int bufsize,
- void (*shutdown)(struct svc_serv *serv))
+ void (*shutdown)(struct svc_serv *serv, struct net *net))
{
return __svc_create(prog, bufsize, /*npools*/1, shutdown);
}
@@ -492,7 +494,7 @@ EXPORT_SYMBOL_GPL(svc_create);
struct svc_serv *
svc_create_pooled(struct svc_program *prog, unsigned int bufsize,
- void (*shutdown)(struct svc_serv *serv),
+ void (*shutdown)(struct svc_serv *serv, struct net *net),
svc_thread_fn func, struct module *mod)
{
struct svc_serv *serv;
@@ -509,6 +511,24 @@ svc_create_pooled(struct svc_program *prog, unsigned int bufsize,
}
EXPORT_SYMBOL_GPL(svc_create_pooled);
+void svc_shutdown_net(struct svc_serv *serv, struct net *net)
+{
+ /*
+ * The set of xprts (contained in the sv_tempsocks and
+ * sv_permsocks lists) is now constant, since it is modified
+ * only by accepting new sockets (done by service threads in
+ * svc_recv) or aging old ones (done by sv_temptimer), or
+ * configuration changes (excluded by whatever locking the
+ * caller is using--nfsd_mutex in the case of nfsd). So it's
+ * safe to traverse those lists and shut everything down:
+ */
+ svc_close_net(serv, net);
+
+ if (serv->sv_shutdown)
+ serv->sv_shutdown(serv, net);
+}
+EXPORT_SYMBOL_GPL(svc_shutdown_net);
+
/*
* Destroy an RPC service. Should be called with appropriate locking to
* protect the sv_nrthreads, sv_permsocks and sv_tempsocks.
@@ -516,6 +536,8 @@ EXPORT_SYMBOL_GPL(svc_create_pooled);
void
svc_destroy(struct svc_serv *serv)
{
+ struct net *net = current->nsproxy->net_ns;
+
dprintk("svc: svc_destroy(%s, %d)\n",
serv->sv_program->pg_name,
serv->sv_nrthreads);
@@ -529,19 +551,15 @@ svc_destroy(struct svc_serv *serv)
printk("svc_destroy: no threads for serv=%p!\n", serv);
del_timer_sync(&serv->sv_temptimer);
+
+ svc_shutdown_net(serv, net);
+
/*
- * The set of xprts (contained in the sv_tempsocks and
- * sv_permsocks lists) is now constant, since it is modified
- * only by accepting new sockets (done by service threads in
- * svc_recv) or aging old ones (done by sv_temptimer), or
- * configuration changes (excluded by whatever locking the
- * caller is using--nfsd_mutex in the case of nfsd). So it's
- * safe to traverse those lists and shut everything down:
+ * The last user is gone and thus all sockets have to be destroyed to
+ * the point. Check this.
*/
- svc_close_all(serv);
-
- if (serv->sv_shutdown)
- serv->sv_shutdown(serv);
+ BUG_ON(!list_empty(&serv->sv_permsocks));
+ BUG_ON(!list_empty(&serv->sv_tempsocks));
cache_clean_deferred(serv);
@@ -795,7 +813,8 @@ EXPORT_SYMBOL_GPL(svc_exit_thread);
* Returns zero on success; a negative errno value is returned
* if any error occurs.
*/
-static int __svc_rpcb_register4(const u32 program, const u32 version,
+static int __svc_rpcb_register4(struct net *net, const u32 program,
+ const u32 version,
const unsigned short protocol,
const unsigned short port)
{
@@ -818,7 +837,7 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
return -ENOPROTOOPT;
}
- error = rpcb_v4_register(program, version,
+ error = rpcb_v4_register(net, program, version,
(const struct sockaddr *)&sin, netid);
/*
@@ -826,7 +845,7 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
* registration request with the legacy rpcbind v2 protocol.
*/
if (error == -EPROTONOSUPPORT)
- error = rpcb_register(program, version, protocol, port);
+ error = rpcb_register(net, program, version, protocol, port);
return error;
}
@@ -842,7 +861,8 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
* Returns zero on success; a negative errno value is returned
* if any error occurs.
*/
-static int __svc_rpcb_register6(const u32 program, const u32 version,
+static int __svc_rpcb_register6(struct net *net, const u32 program,
+ const u32 version,
const unsigned short protocol,
const unsigned short port)
{
@@ -865,7 +885,7 @@ static int __svc_rpcb_register6(const u32 program, const u32 version,
return -ENOPROTOOPT;
}
- error = rpcb_v4_register(program, version,
+ error = rpcb_v4_register(net, program, version,
(const struct sockaddr *)&sin6, netid);
/*
@@ -885,7 +905,7 @@ static int __svc_rpcb_register6(const u32 program, const u32 version,
* Returns zero on success; a negative errno value is returned
* if any error occurs.
*/
-static int __svc_register(const char *progname,
+static int __svc_register(struct net *net, const char *progname,
const u32 program, const u32 version,
const int family,
const unsigned short protocol,
@@ -895,12 +915,12 @@ static int __svc_register(const char *progname,
switch (family) {
case PF_INET:
- error = __svc_rpcb_register4(program, version,
+ error = __svc_rpcb_register4(net, program, version,
protocol, port);
break;
#if IS_ENABLED(CONFIG_IPV6)
case PF_INET6:
- error = __svc_rpcb_register6(program, version,
+ error = __svc_rpcb_register6(net, program, version,
protocol, port);
#endif
}
@@ -914,14 +934,16 @@ static int __svc_register(const char *progname,
/**
* svc_register - register an RPC service with the local portmapper
* @serv: svc_serv struct for the service to register
+ * @net: net namespace for the service to register
* @family: protocol family of service's listener socket
* @proto: transport protocol number to advertise
* @port: port to advertise
*
* Service is registered for any address in the passed-in protocol family
*/
-int svc_register(const struct svc_serv *serv, const int family,
- const unsigned short proto, const unsigned short port)
+int svc_register(const struct svc_serv *serv, struct net *net,
+ const int family, const unsigned short proto,
+ const unsigned short port)
{
struct svc_program *progp;
unsigned int i;
@@ -946,7 +968,7 @@ int svc_register(const struct svc_serv *serv, const int family,
if (progp->pg_vers[i]->vs_hidden)
continue;
- error = __svc_register(progp->pg_name, progp->pg_prog,
+ error = __svc_register(net, progp->pg_name, progp->pg_prog,
i, family, proto, port);
if (error < 0)
break;
@@ -963,19 +985,19 @@ int svc_register(const struct svc_serv *serv, const int family,
* any "inet6" entries anyway. So a PMAP_UNSET should be sufficient
* in this case to clear all existing entries for [program, version].
*/
-static void __svc_unregister(const u32 program, const u32 version,
+static void __svc_unregister(struct net *net, const u32 program, const u32 version,
const char *progname)
{
int error;
- error = rpcb_v4_register(program, version, NULL, "");
+ error = rpcb_v4_register(net, program, version, NULL, "");
/*
* User space didn't support rpcbind v4, so retry this
* request with the legacy rpcbind v2 protocol.
*/
if (error == -EPROTONOSUPPORT)
- error = rpcb_register(program, version, 0, 0);
+ error = rpcb_register(net, program, version, 0, 0);
dprintk("svc: %s(%sv%u), error %d\n",
__func__, progname, version, error);
@@ -989,7 +1011,7 @@ static void __svc_unregister(const u32 program, const u32 version,
* The result of unregistration is reported via dprintk for those who want
* verification of the result, but is otherwise not important.
*/
-static void svc_unregister(const struct svc_serv *serv)
+static void svc_unregister(const struct svc_serv *serv, struct net *net)
{
struct svc_program *progp;
unsigned long flags;
@@ -1006,7 +1028,7 @@ static void svc_unregister(const struct svc_serv *serv)
dprintk("svc: attempting to unregister %sv%u\n",
progp->pg_name, i);
- __svc_unregister(progp->pg_prog, i, progp->pg_name);
+ __svc_unregister(net, progp->pg_prog, i, progp->pg_name);
}
}