From 608207e8884e083ad8b8d33eda868da70f0d63e8 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Tue, 23 Dec 2008 16:17:40 -0500 Subject: [PATCH] rpc: pass target name down to rpc level on callbacks The rpc client needs to know the principal that the setclientid was done as, so it can tell gssd who to authenticate to. Signed-off-by: Olga Kornievskaia Signed-off-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- fs/nfsd/nfs4callback.c | 6 ++++++ include/linux/sunrpc/clnt.h | 2 ++ net/sunrpc/clnt.c | 16 ++++++++++++++++ 3 files changed, 24 insertions(+) diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 094747a1227..3ca14178214 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -384,6 +384,7 @@ static int do_probe_callback(void *data) .version = nfs_cb_version[1]->number, .authflavor = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */ .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET), + .client_name = clp->cl_principal, }; struct rpc_message msg = { .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL], @@ -392,6 +393,11 @@ static int do_probe_callback(void *data) struct rpc_clnt *client; int status; + if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) { + status = nfserr_cb_path_down; + goto out_err; + } + /* Initialize address */ memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 6f0ee1b84a4..c39a21040dc 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -58,6 +58,7 @@ struct rpc_clnt { struct rpc_timeout cl_timeout_default; struct rpc_program * cl_program; char cl_inline_name[32]; + char *cl_principal; /* target to authenticate to */ }; /* @@ -108,6 +109,7 @@ struct rpc_create_args { u32 version; rpc_authflavor_t authflavor; unsigned long flags; + char *client_name; }; /* Values for "flags" field */ diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 4895c341e46..347f2a25abb 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -197,6 +197,12 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru clnt->cl_rtt = &clnt->cl_rtt_default; rpc_init_rtt(&clnt->cl_rtt_default, clnt->cl_timeout->to_initval); + clnt->cl_principal = NULL; + if (args->client_name) { + clnt->cl_principal = kstrdup(args->client_name, GFP_KERNEL); + if (!clnt->cl_principal) + goto out_no_principal; + } kref_init(&clnt->cl_kref); @@ -226,6 +232,8 @@ out_no_auth: rpc_put_mount(); } out_no_path: + kfree(clnt->cl_principal); +out_no_principal: rpc_free_iostats(clnt->cl_metrics); out_no_stats: if (clnt->cl_server != clnt->cl_inline_name) @@ -354,6 +362,11 @@ rpc_clone_client(struct rpc_clnt *clnt) new->cl_metrics = rpc_alloc_iostats(clnt); if (new->cl_metrics == NULL) goto out_no_stats; + if (clnt->cl_principal) { + new->cl_principal = kstrdup(clnt->cl_principal, GFP_KERNEL); + if (new->cl_principal == NULL) + goto out_no_principal; + } kref_init(&new->cl_kref); err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name); if (err != 0) @@ -366,6 +379,8 @@ rpc_clone_client(struct rpc_clnt *clnt) rpciod_up(); return new; out_no_path: + kfree(new->cl_principal); +out_no_principal: rpc_free_iostats(new->cl_metrics); out_no_stats: kfree(new); @@ -417,6 +432,7 @@ rpc_free_client(struct kref *kref) out_free: rpc_unregister_client(clnt); rpc_free_iostats(clnt->cl_metrics); + kfree(clnt->cl_principal); clnt->cl_metrics = NULL; xprt_put(clnt->cl_xprt); rpciod_down();