From 6bbb4ae8ffc4eef825c8742eff1fefae69a82e41 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Wed, 11 Jul 2012 16:30:59 -0400 Subject: [PATCH] NFS: Clean up nfs4_proc_setclientid() and friends Add documenting comments and appropriate debugging messages. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 45 +++++++++++++++++++++++++++++++++++++-------- fs/nfs/nfs4state.c | 4 ++++ 2 files changed, 41 insertions(+), 8 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1148081e1a53..05801be4a180 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4013,6 +4013,16 @@ static void nfs4_init_boot_verifier(const struct nfs_client *clp, memcpy(bootverf->data, verf, sizeof(bootverf->data)); } +/** + * nfs4_proc_setclientid - Negotiate client ID + * @clp: state data structure + * @program: RPC program for NFSv4 callback service + * @port: IP port number for NFS4 callback service + * @cred: RPC credential to use for this call + * @res: where to place the result + * + * Returns zero, a negative errno, or a negative NFS4ERR status code. + */ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred, struct nfs4_setclientid_res *res) @@ -4029,6 +4039,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, .rpc_resp = res, .rpc_cred = cred, }; + int status; /* nfs_client_id4 */ nfs4_init_boot_verifier(clp, &sc_verifier); @@ -4050,9 +4061,22 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); - return rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + dprintk("NFS call setclientid auth=%s, '%.*s'\n", + clp->cl_rpcclient->cl_auth->au_ops->au_name, + setclientid.sc_name_len, setclientid.sc_name); + status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + dprintk("NFS reply setclientid: %d\n", status); + return status; } +/** + * nfs4_proc_setclientid_confirm - Confirm client ID + * @clp: state data structure + * @res: result of a previous SETCLIENTID + * @cred: RPC credential to use for this call + * + * Returns zero, a negative errno, or a negative NFS4ERR status code. + */ int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct nfs4_setclientid_res *arg, struct rpc_cred *cred) @@ -4067,6 +4091,9 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp, unsigned long now; int status; + dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", + clp->cl_rpcclient->cl_auth->au_ops->au_name, + clp->cl_clientid); now = jiffies; status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status == 0) { @@ -4075,6 +4102,7 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp, clp->cl_last_renewal = now; spin_unlock(&clp->cl_lock); } + dprintk("NFS reply setclientid_confirm: %d\n", status); return status; } @@ -5218,6 +5246,8 @@ out: /* * nfs4_proc_exchange_id() * + * Returns zero, a negative errno, or a negative NFS4ERR status code. + * * Since the clientid has expired, all compounds using sessions * associated with the stale clientid will be returning * NFS4ERR_BADSESSION in the sequence operation, and will therefore @@ -5242,15 +5272,14 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) .rpc_cred = cred, }; - dprintk("--> %s\n", __func__); - BUG_ON(clp == NULL); - nfs4_init_boot_verifier(clp, &verifier); - args.id_len = scnprintf(args.id, sizeof(args.id), "%s/%s", clp->cl_ipaddr, clp->cl_rpcclient->cl_nodename); + dprintk("NFS call exchange_id auth=%s, '%.*s'\n", + clp->cl_rpcclient->cl_auth->au_ops->au_name, + args.id_len, args.id); res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), GFP_NOFS); @@ -5313,12 +5342,12 @@ out_server_scope: kfree(res.server_scope); out: if (clp->cl_implid != NULL) - dprintk("%s: Server Implementation ID: " + dprintk("NFS reply exchange_id: Server Implementation ID: " "domain: %s, name: %s, date: %llu,%u\n", - __func__, clp->cl_implid->domain, clp->cl_implid->name, + clp->cl_implid->domain, clp->cl_implid->name, clp->cl_implid->date.seconds, clp->cl_implid->date.nseconds); - dprintk("<-- %s status= %d\n", __func__, status); + dprintk("NFS reply exchange_id: %d\n", status); return status; } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 81eabcdad0e5..55148def5540 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1665,6 +1665,10 @@ static int nfs4_establish_lease(struct nfs_client *clp) return 0; } +/* + * Returns zero or a negative errno. NFS4ERR values are converted + * to local errno values. + */ static int nfs4_reclaim_lease(struct nfs_client *clp) { int status; -- 2.20.1