[PATCH v2 0/4] SUNRPC: register services with per-net rpcbind

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* [PATCH v2 0/4] SUNRPC: register services with per-net rpcbind
@ 2012-01-13 10:02 Stanislav Kinsbursky
  2012-01-13 10:02 ` [PATCH v2 1/4] SUNRPC: use proper network namespace in rpcbind RPCBPROC_GETADDR procedure Stanislav Kinsbursky
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: Stanislav Kinsbursky @ 2012-01-13 10:02 UTC (permalink / raw)
  To: Trond.Myklebust
  Cc: linux-nfs, xemul, neilb, netdev, linux-kernel, jbottomley,
	bfields, davem, devel

This patch-set was created in context of clone of git branch:
git://git.linux-nfs.org/projects/trondmy/nfs-2.6.git.
head: devel

v2:
1) Rebased on up-to-date state ("devel" head).
2) 3 patches from previous series:
a) [1/7] "SUNRPC: create rpcbind client in passed network namespace context"
b) [2/7] "SUNRPC: register rpcbind programs in passed network namespase context"
c) [4/7] "SUNRPC: parametrize local rpcbind clients creation with net ns"
moved to series:
[PATCH v5 0/6] SUNRPC: rcbind clients virtualization

This patch set makes service registered with per-net rpcbind and required for
making Lockd and NFSd services able to handle requests from and to different
network namespaces.

The following series consists of:

---

Stanislav Kinsbursky (4):
      SUNRPC: use proper network namespace in rpcbind RPCBPROC_GETADDR procedure
      SUNRPC: pass network namespace to service registering routines
      SUNRPC: register service on creation in current network namespace
      SUNRPC: unregister service on creation in current network namespace

 fs/nfsd/nfssvc.c           |    4 +--
 include/linux/sunrpc/svc.h |   11 ++++----
 net/sunrpc/rpcb_clnt.c     |    3 +-
 net/sunrpc/svc.c           |   61 ++++++++++++++++++++++++--------------------
 net/sunrpc/svcsock.c       |    3 +-
 5 files changed, 45 insertions(+), 37 deletions(-)

-- 
Signature

^ permalink raw reply	[flat|nested] 5+ messages in thread

* [PATCH v2 1/4] SUNRPC: use proper network namespace in rpcbind RPCBPROC_GETADDR procedure
  2012-01-13 10:02 [PATCH v2 0/4] SUNRPC: register services with per-net rpcbind Stanislav Kinsbursky
@ 2012-01-13 10:02 ` Stanislav Kinsbursky
  2012-01-13 10:02 ` [PATCH v2 2/4] SUNRPC: pass network namespace to service registering routines Stanislav Kinsbursky
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 5+ messages in thread
From: Stanislav Kinsbursky @ 2012-01-13 10:02 UTC (permalink / raw)
  To: Trond.Myklebust
  Cc: linux-nfs, xemul, neilb, netdev, linux-kernel, jbottomley,
	bfields, davem, devel

Pass request socket network namespace to rpc_uaddr2sockaddr() instead of
hardcoded "init_net",  when decoding address in RPCBPROC_GETADDR procedure.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>

---
 net/sunrpc/rpcb_clnt.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 7c6fac0..4ce3a8e 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -934,7 +934,8 @@ static int rpcb_dec_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr,
 	dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid,
 			task->tk_msg.rpc_proc->p_name, (char *)p);
 
-	if (rpc_uaddr2sockaddr(&init_net, (char *)p, len, sap, sizeof(address)) == 0)
+	if (rpc_uaddr2sockaddr(req->rq_xprt->xprt_net, (char *)p, len,
+				sap, sizeof(address)) == 0)
 		goto out_fail;
 	rpcb->r_port = rpc_get_port(sap);
 

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [PATCH v2 2/4] SUNRPC: pass network namespace to service registering routines
  2012-01-13 10:02 [PATCH v2 0/4] SUNRPC: register services with per-net rpcbind Stanislav Kinsbursky
  2012-01-13 10:02 ` [PATCH v2 1/4] SUNRPC: use proper network namespace in rpcbind RPCBPROC_GETADDR procedure Stanislav Kinsbursky
@ 2012-01-13 10:02 ` Stanislav Kinsbursky
       [not found] ` <20120113095121.12259.52250.stgit-bi+AKbBUZKagILUCTcTcHdKyNwTtLsGr@public.gmane.org>
  2012-01-13 10:03 ` [PATCH v2 4/4] SUNRPC: unregister " Stanislav Kinsbursky
  3 siblings, 0 replies; 5+ messages in thread
From: Stanislav Kinsbursky @ 2012-01-13 10:02 UTC (permalink / raw)
  To: Trond.Myklebust
  Cc: linux-nfs, xemul, neilb, netdev, linux-kernel, jbottomley,
	bfields, davem, devel

Lockd and NFSd services will handle requests from and to many network
nsamespaces. And thus have to be registered and unregistered per network
namespace.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>

---
 include/linux/sunrpc/svc.h |    2 +-
 net/sunrpc/svc.c           |   42 +++++++++++++++++++++++-------------------
 net/sunrpc/svcsock.c       |    3 ++-
 3 files changed, 26 insertions(+), 21 deletions(-)

diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 35b37b1..d3563c2 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -428,7 +428,7 @@ void		   svc_destroy(struct svc_serv *);
 int		   svc_process(struct svc_rqst *);
 int		   bc_svc_process(struct svc_serv *, struct rpc_rqst *,
 			struct svc_rqst *);
-int		   svc_register(const struct svc_serv *, const int,
+int		   svc_register(const struct svc_serv *, struct net *, const int,
 				const unsigned short, const unsigned short);
 
 void		   svc_wake_up(struct svc_serv *);
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 8f6c255..03d2dfc 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -30,7 +30,7 @@
 
 #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)
 
@@ -375,13 +375,13 @@ static int svc_rpcb_setup(struct svc_serv *serv)
 		return err;
 
 	/* Remove any stale portmap registrations */
-	svc_unregister(serv);
+	svc_unregister(serv, &init_net);
 	return 0;
 }
 
 void svc_rpcb_cleanup(struct svc_serv *serv)
 {
-	svc_unregister(serv);
+	svc_unregister(serv, &init_net);
 	rpcb_put_local(&init_net);
 }
 EXPORT_SYMBOL_GPL(svc_rpcb_cleanup);
@@ -790,7 +790,8 @@ 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)
 {
@@ -813,7 +814,7 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
 		return -ENOPROTOOPT;
 	}
 
-	error = rpcb_v4_register(&init_net, program, version,
+	error = rpcb_v4_register(net, program, version,
 					(const struct sockaddr *)&sin, netid);
 
 	/*
@@ -821,7 +822,7 @@ 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(&init_net, program, version, protocol, port);
+		error = rpcb_register(net, program, version, protocol, port);
 
 	return error;
 }
@@ -837,7 +838,8 @@ 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)
 {
@@ -860,7 +862,7 @@ static int __svc_rpcb_register6(const u32 program, const u32 version,
 		return -ENOPROTOOPT;
 	}
 
-	error = rpcb_v4_register(&init_net, program, version,
+	error = rpcb_v4_register(net, program, version,
 					(const struct sockaddr *)&sin6, netid);
 
 	/*
@@ -880,7 +882,7 @@ 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,
@@ -890,12 +892,12 @@ 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
 	}
@@ -909,14 +911,16 @@ 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;
@@ -941,7 +945,7 @@ 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;
@@ -958,19 +962,19 @@ 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(&init_net, 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(&init_net, program, version, 0, 0);
+		error = rpcb_register(net, program, version, 0, 0);
 
 	dprintk("svc: %s(%sv%u), error %d\n",
 			__func__, progname, version, error);
@@ -984,7 +988,7 @@ 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;
@@ -1001,7 +1005,7 @@ 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);
 		}
 	}
 
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 4645709..e8af0c9 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1409,7 +1409,8 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
 
 	/* Register socket with portmapper */
 	if (*errp >= 0 && pmap_register)
-		*errp = svc_register(serv, inet->sk_family, inet->sk_protocol,
+		*errp = svc_register(serv, sock->sk->sk_net, inet->sk_family,
+				     inet->sk_protocol,
 				     ntohs(inet_sk(inet)->inet_sport));
 
 	if (*errp < 0) {

^ permalink raw reply related	[flat|nested] 5+ messages in thread

[parent not found: <20120113095121.12259.52250.stgit-bi+AKbBUZKagILUCTcTcHdKyNwTtLsGr@public.gmane.org>]

* [PATCH v2 3/4] SUNRPC: register service on creation in current network namespace
       [not found] ` <20120113095121.12259.52250.stgit-bi+AKbBUZKagILUCTcTcHdKyNwTtLsGr@public.gmane.org>
@ 2012-01-13 10:02   ` Stanislav Kinsbursky
  0 siblings, 0 replies; 5+ messages in thread
From: Stanislav Kinsbursky @ 2012-01-13 10:02 UTC (permalink / raw)
  To: Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA
  Cc: linux-nfs-u79uwXL29TY76Z2rM5mHXA, xemul-bzQdu9zFT3WakBO8gow8eQ,
	neilb-l3A5Bk7waGM, netdev-u79uwXL29TY76Z2rM5mHXA,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA,
	jbottomley-bzQdu9zFT3WakBO8gow8eQ, bfields-uC3wQj2KruNg9hUCZPvPmw,
	davem-fT/PcQaiUtIeIZ0/mPfg9Q, devel-GEFAQzZX7r8dnm+yROfE0A

Service, using rpcbind (Lockd, NFSd) are starting from userspace call and thus
we can use current network namespace.
There could be a problem with NFSd service, because it's creation can be called
through NFSd fs from different network namespace. But this is a part of "NFSd
per net ns" task and will be fixed in future.

Signed-off-by: Stanislav Kinsbursky <skinsbursky-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>

---
 net/sunrpc/svc.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 03d2dfc..b2cc1b3 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>
@@ -366,16 +367,16 @@ 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)
+static int svc_rpcb_setup(struct svc_serv *serv, struct net *net)
 {
 	int err;
 
-	err = rpcb_create_local(&init_net);
+	err = rpcb_create_local(net);
 	if (err)
 		return err;
 
 	/* Remove any stale portmap registrations */
-	svc_unregister(serv, &init_net);
+	svc_unregister(serv, net);
 	return 0;
 }
 
@@ -468,7 +469,7 @@ __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;

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^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [PATCH v2 4/4] SUNRPC: unregister service on creation in current network namespace
  2012-01-13 10:02 [PATCH v2 0/4] SUNRPC: register services with per-net rpcbind Stanislav Kinsbursky
                   ` (2 preceding siblings ...)
       [not found] ` <20120113095121.12259.52250.stgit-bi+AKbBUZKagILUCTcTcHdKyNwTtLsGr@public.gmane.org>
@ 2012-01-13 10:03 ` Stanislav Kinsbursky
  3 siblings, 0 replies; 5+ messages in thread
From: Stanislav Kinsbursky @ 2012-01-13 10:03 UTC (permalink / raw)
  To: Trond.Myklebust
  Cc: linux-nfs, xemul, neilb, netdev, linux-kernel, jbottomley,
	bfields, davem, devel

On service shutdown we can be sure, that no more users of it left except
current. Thus it looks like using current network namespace context is safe in
this case.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>

---
 fs/nfsd/nfssvc.c           |    4 ++--
 include/linux/sunrpc/svc.h |    9 +++++----
 net/sunrpc/svc.c           |   14 +++++++-------
 3 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index eda7d7e..fce472f 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -251,13 +251,13 @@ static void nfsd_shutdown(void)
 	nfsd_up = false;
 }
 
-static void nfsd_last_thread(struct svc_serv *serv)
+static void nfsd_last_thread(struct svc_serv *serv, struct net *net)
 {
 	/* When last nfsd thread exits we need to do some clean-up */
 	nfsd_serv = NULL;
 	nfsd_shutdown();
 
-	svc_rpcb_cleanup(serv);
+	svc_rpcb_cleanup(serv, net);
 
 	printk(KERN_WARNING "nfsd: last server has exited, flushing export "
 			    "cache\n");
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index d3563c2..7b65495 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -84,7 +84,8 @@ struct svc_serv {
 	unsigned int		sv_nrpools;	/* number of thread pools */
 	struct svc_pool *	sv_pools;	/* array of thread pools */
 
-	void			(*sv_shutdown)(struct svc_serv *serv);
+	void			(*sv_shutdown)(struct svc_serv *serv,
+					       struct net *net);
 						/* Callback to use when last thread
 						 * exits.
 						 */
@@ -413,14 +414,14 @@ struct svc_procedure {
 /*
  * Function prototypes.
  */
-void svc_rpcb_cleanup(struct svc_serv *serv);
+void svc_rpcb_cleanup(struct svc_serv *serv, struct net *net);
 struct svc_serv *svc_create(struct svc_program *, unsigned int,
-			    void (*shutdown)(struct svc_serv *));
+			    void (*shutdown)(struct svc_serv *, struct net *net));
 struct svc_rqst *svc_prepare_thread(struct svc_serv *serv,
 					struct svc_pool *pool, int node);
 void		   svc_exit_thread(struct svc_rqst *);
 struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
-			void (*shutdown)(struct svc_serv *),
+			void (*shutdown)(struct svc_serv *, struct net *net),
 			svc_thread_fn, struct module *);
 int		   svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
 int		   svc_pool_stats_open(struct svc_serv *serv, struct file *file);
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index b2cc1b3..1bcfc3c 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -380,10 +380,10 @@ static int svc_rpcb_setup(struct svc_serv *serv, struct net *net)
 	return 0;
 }
 
-void svc_rpcb_cleanup(struct svc_serv *serv)
+void svc_rpcb_cleanup(struct svc_serv *serv, struct net *net)
 {
-	svc_unregister(serv, &init_net);
-	rpcb_put_local(&init_net);
+	svc_unregister(serv, net);
+	rpcb_put_local(net);
 }
 EXPORT_SYMBOL_GPL(svc_rpcb_cleanup);
 
@@ -409,7 +409,7 @@ 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;
@@ -483,7 +483,7 @@ __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);
 }
@@ -491,7 +491,7 @@ 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;
@@ -532,7 +532,7 @@ svc_destroy(struct svc_serv *serv)
 	svc_close_all(&serv->sv_tempsocks);
 
 	if (serv->sv_shutdown)
-		serv->sv_shutdown(serv);
+		serv->sv_shutdown(serv, current->nsproxy->net_ns);
 
 	svc_close_all(&serv->sv_permsocks);
 

^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2012-01-13 10:03 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-01-13 10:02 [PATCH v2 0/4] SUNRPC: register services with per-net rpcbind Stanislav Kinsbursky
2012-01-13 10:02 ` [PATCH v2 1/4] SUNRPC: use proper network namespace in rpcbind RPCBPROC_GETADDR procedure Stanislav Kinsbursky
2012-01-13 10:02 ` [PATCH v2 2/4] SUNRPC: pass network namespace to service registering routines Stanislav Kinsbursky
     [not found] ` <20120113095121.12259.52250.stgit-bi+AKbBUZKagILUCTcTcHdKyNwTtLsGr@public.gmane.org>
2012-01-13 10:02   ` [PATCH v2 3/4] SUNRPC: register service on creation in current network namespace Stanislav Kinsbursky
2012-01-13 10:03 ` [PATCH v2 4/4] SUNRPC: unregister " Stanislav Kinsbursky

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