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Commit 608207e8 authored by Olga Kornievskaia's avatar Olga Kornievskaia Committed by Trond Myklebust
Browse files

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: default avatarOlga Kornievskaia <aglo@citi.umich.edu>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 68e76ad0

fs/nfsd/nfs4callback.c

+6 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/sunrpc/clnt.h

+2 −0
Original line number Diff line number Diff line
@@ -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 */

net/sunrpc/clnt.c

+16 −0
Original line number Diff line number Diff line
@@ -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 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru 
		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();