From cbbb34498f8b2b26cbdc79532c8a2ee5cd1e756a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 30 Apr 2012 11:52:40 -0400 Subject: SUNRPC: RPC client must use the current utsname hostname string Now that the rpc client is namespace aware, it needs to use the utsname of the process that created it instead of using the init_utsname. Both rpc_new_client and rpc_clone_client need to be fixed. Signed-off-by: Trond Myklebust Cc: Stanislav Kinsbursky --- net/sunrpc/clnt.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index d127bd747527..adf2990acebf 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -279,6 +279,14 @@ void rpc_clients_notifier_unregister(void) return rpc_pipefs_notifier_unregister(&rpc_clients_block); } +static void rpc_clnt_set_nodename(struct rpc_clnt *clnt, const char *nodename) +{ + clnt->cl_nodelen = strlen(nodename); + if (clnt->cl_nodelen > UNX_MAXNODENAME) + clnt->cl_nodelen = UNX_MAXNODENAME; + memcpy(clnt->cl_nodename, nodename, clnt->cl_nodelen); +} + static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt) { const struct rpc_program *program = args->program; @@ -359,10 +367,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru } /* save the nodename */ - clnt->cl_nodelen = strlen(init_utsname()->nodename); - if (clnt->cl_nodelen > UNX_MAXNODENAME) - clnt->cl_nodelen = UNX_MAXNODENAME; - memcpy(clnt->cl_nodename, init_utsname()->nodename, clnt->cl_nodelen); + rpc_clnt_set_nodename(clnt, utsname()->nodename); rpc_register_client(clnt); return clnt; @@ -521,6 +526,7 @@ rpc_clone_client(struct rpc_clnt *clnt) err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name); if (err != 0) goto out_no_path; + rpc_clnt_set_nodename(new, utsname()->nodename); if (new->cl_auth) atomic_inc(&new->cl_auth->au_count); atomic_inc(&clnt->cl_count); -- cgit v1.2.3 From 7bdf7415a6b8ec31f86b3ad3eaa241257ecb7c4c Mon Sep 17 00:00:00 2001 From: Steve Dickson Date: Thu, 3 May 2012 11:47:08 -0400 Subject: auth_gss: the list of pseudoflavors not being parsed correctly gss_mech_list_pseudoflavors() parses a list of registered mechanisms. On that list contains a list of pseudo flavors which was not being parsed correctly, causing only the first pseudo flavor to be found. Signed-off-by: Steve Dickson Signed-off-by: Trond Myklebust --- net/sunrpc/auth_gss/gss_mech_switch.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c index ca8cad8251c7..782bfe1b6465 100644 --- a/net/sunrpc/auth_gss/gss_mech_switch.c +++ b/net/sunrpc/auth_gss/gss_mech_switch.c @@ -242,12 +242,13 @@ EXPORT_SYMBOL_GPL(gss_mech_get_by_pseudoflavor); int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr) { struct gss_api_mech *pos = NULL; - int i = 0; + int j, i = 0; spin_lock(®istered_mechs_lock); list_for_each_entry(pos, ®istered_mechs, gm_list) { - array_ptr[i] = pos->gm_pfs->pseudoflavor; - i++; + for (j=0; j < pos->gm_pf_num; j++) { + array_ptr[i++] = pos->gm_pfs[j].pseudoflavor; + } } spin_unlock(®istered_mechs_lock); return i; -- cgit v1.2.3 From bda14606a3c055dbbccd998fa91eb87c4c7b2027 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sun, 13 May 2012 10:35:40 -0700 Subject: sunrpc: fix kernel-doc warnings Fix kernel-doc warnings in sunrpc/rpc_pipe.c and sunrpc/rpcb_clnt.c: Warning(net/sunrpc/rpcb_clnt.c:428): No description found for parameter 'net' Warning(net/sunrpc/rpcb_clnt.c:567): No description found for parameter 'net' Warning(net/sunrpc/rpc_pipe.c:133): No description found for parameter 'pipe' Warning(net/sunrpc/rpc_pipe.c:133): Excess function parameter 'inode' description in 'rpc_queue_upcall' Warning(net/sunrpc/rpc_pipe.c:839): No description found for parameter 'pipe' Warning(net/sunrpc/rpc_pipe.c:839): Excess function parameter 'ops' description in 'rpc_mkpipe_dentry' Warning(net/sunrpc/rpc_pipe.c:839): Excess function parameter 'flags' description in 'rpc_mkpipe_dentry' Warning(net/sunrpc/rpc_pipe.c:949): No description found for parameter 'dentry' Warning(net/sunrpc/rpc_pipe.c:949): Excess function parameter 'clnt' description in 'rpc_remove_client_dir' Signed-off-by: Randy Dunlap Signed-off-by: Trond Myklebust --- net/sunrpc/rpc_pipe.c | 8 +++----- net/sunrpc/rpcb_clnt.c | 2 ++ 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 3b62cf288031..7fb49c53ed61 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -120,7 +120,7 @@ EXPORT_SYMBOL_GPL(rpc_pipe_generic_upcall); /** * rpc_queue_upcall - queue an upcall message to userspace - * @inode: inode of upcall pipe on which to queue given message + * @pipe: upcall pipe on which to queue given message * @msg: message to queue * * Call with an @inode created by rpc_mkpipe() to queue an upcall. @@ -819,9 +819,7 @@ static int rpc_rmdir_depopulate(struct dentry *dentry, * @parent: dentry of directory to create new "pipe" in * @name: name of pipe * @private: private data to associate with the pipe, for the caller's use - * @ops: operations defining the behavior of the pipe: upcall, downcall, - * release_pipe, open_pipe, and destroy_msg. - * @flags: rpc_pipe flags + * @pipe: &rpc_pipe containing input parameters * * Data is made available for userspace to read by calls to * rpc_queue_upcall(). The actual reads will result in calls to @@ -943,7 +941,7 @@ struct dentry *rpc_create_client_dir(struct dentry *dentry, /** * rpc_remove_client_dir - Remove a directory created with rpc_create_client_dir() - * @clnt: rpc client + * @dentry: dentry for the pipe */ int rpc_remove_client_dir(struct dentry *dentry) { diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index 78ac39fd9fe7..3c0653439f3d 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -394,6 +394,7 @@ static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg) /** * rpcb_register - set or unset a port registration with the local rpcbind svc + * @net: target network namespace * @prog: RPC program number to bind * @vers: RPC version number to bind * @prot: transport protocol to register @@ -521,6 +522,7 @@ static int rpcb_unregister_all_protofamilies(struct sunrpc_net *sn, /** * rpcb_v4_register - set or unset a port registration with the local rpcbind + * @net: target network namespace * @program: RPC program number of service to (un)register * @version: RPC version number of service to (un)register * @address: address family, IP address, and port to (un)register -- cgit v1.2.3 From 6b34309936ed5c85cbe5868655814065f42c2f38 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 16 May 2012 13:30:35 -0400 Subject: sunrpc: suppress page allocation warnings in xprt_alloc_slot() It's easily possible for these allocations to fail since we're using GFP_NOWAIT here. We don't want to spam the logs with warnings about that though. Signed-off-by: Jeff Layton Signed-off-by: Trond Myklebust --- net/sunrpc/xprt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 0cbcd1ab49ab..b239e75c483f 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -979,7 +979,7 @@ static void xprt_alloc_slot(struct rpc_task *task) list_del(&req->rq_list); goto out_init_req; } - req = xprt_dynamic_alloc_slot(xprt, GFP_NOWAIT); + req = xprt_dynamic_alloc_slot(xprt, GFP_NOWAIT|__GFP_NOWARN); if (!IS_ERR(req)) goto out_init_req; switch (PTR_ERR(req)) { -- cgit v1.2.3 From 1afeaf5c29aa07db25760d2fbed5c08a3aec3498 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 19 May 2012 12:12:53 -0400 Subject: sunrpc: fix loss of task->tk_status after rpc_delay call in xprt_alloc_slot xprt_alloc_slot will call rpc_delay() to make the task wait a bit before retrying when it gets back an -ENOMEM error from xprt_dynamic_alloc_slot. The problem is that rpc_delay will clear the task->tk_status, causing call_reserveresult to abort the task. The solution is simply to let call_reserveresult handle the ENOMEM error directly. Reported-by: Jeff Layton Cc: stable@vger.kernel.org [>= 3.1] Signed-off-by: Trond Myklebust --- net/sunrpc/clnt.c | 2 ++ net/sunrpc/xprt.c | 5 +++-- 2 files changed, 5 insertions(+), 2 deletions(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index adf2990acebf..25302c802460 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -1288,6 +1288,8 @@ call_reserveresult(struct rpc_task *task) } switch (status) { + case -ENOMEM: + rpc_delay(task, HZ >> 2); case -EAGAIN: /* woken up; retry */ task->tk_action = call_reserve; return; diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index b239e75c483f..d7ccd7923eab 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -984,15 +984,16 @@ static void xprt_alloc_slot(struct rpc_task *task) goto out_init_req; switch (PTR_ERR(req)) { case -ENOMEM: - rpc_delay(task, HZ >> 2); dprintk("RPC: dynamic allocation of request slot " "failed! Retrying\n"); + task->tk_status = -ENOMEM; break; case -EAGAIN: rpc_sleep_on(&xprt->backlog, task, NULL); dprintk("RPC: waiting for request slot\n"); + default: + task->tk_status = -EAGAIN; } - task->tk_status = -EAGAIN; return; out_init_req: task->tk_status = 0; -- cgit v1.2.3