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Commit 286d7d6a authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Remove requirement for machine creds for the "setclientid" operation 



 Use a cred from the nfs4_client->cl_state_owners list.

 Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent b4454fe1

fs/nfs/inode.c

+0 −14
Original line number Diff line number Diff line
@@ -1822,23 +1822,9 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data, 
		clnt->cl_softrtry = 1;

		clnt->cl_chatty   = 1;

		clp->cl_rpcclient = clnt;

		clp->cl_cred = rpcauth_lookupcred(clnt->cl_auth, 0);

		if (IS_ERR(clp->cl_cred)) {

			up_write(&clp->cl_sem);

			err = PTR_ERR(clp->cl_cred);

			clp->cl_cred = NULL;

			goto out_fail;

		}

		memcpy(clp->cl_ipaddr, server->ip_addr, sizeof(clp->cl_ipaddr));

		nfs_idmap_new(clp);

	}

	if (list_empty(&clp->cl_superblocks)) {

		err = nfs4_init_client(clp);

		if (err != 0) {

			up_write(&clp->cl_sem);

			goto out_fail;

		}

	}

	list_add_tail(&server->nfs4_siblings, &clp->cl_superblocks);

	clnt = rpc_clone_client(clp->cl_rpcclient);

	if (!IS_ERR(clnt))

fs/nfs/nfs4_fs.h

+2 −4
Original line number Diff line number Diff line
@@ -68,7 +68,6 @@ struct nfs4_client { 
	atomic_t		cl_count;



	struct rpc_clnt *	cl_rpcclient;

	struct rpc_cred *	cl_cred;



	struct list_head	cl_superblocks;	/* List of nfs_server structs */
@@ -211,8 +210,8 @@ extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t); 


/* nfs4proc.c */

extern int nfs4_map_errors(int err);

extern int nfs4_proc_setclientid(struct nfs4_client *, u32, unsigned short);

extern int nfs4_proc_setclientid_confirm(struct nfs4_client *);

extern int nfs4_proc_setclientid(struct nfs4_client *, u32, unsigned short, struct rpc_cred *);

extern int nfs4_proc_setclientid_confirm(struct nfs4_client *, struct rpc_cred *);

extern int nfs4_proc_async_renew(struct nfs4_client *, struct rpc_cred *);

extern int nfs4_proc_renew(struct nfs4_client *, struct rpc_cred *);

extern int nfs4_do_close(struct inode *inode, struct nfs4_state *state);
@@ -238,7 +237,6 @@ extern void init_nfsv4_state(struct nfs_server *); 
extern void destroy_nfsv4_state(struct nfs_server *);

extern struct nfs4_client *nfs4_get_client(struct in_addr *);

extern void nfs4_put_client(struct nfs4_client *clp);

extern int nfs4_init_client(struct nfs4_client *clp);

extern struct nfs4_client *nfs4_find_client(struct in_addr *);

struct rpc_cred *nfs4_get_renew_cred(struct nfs4_client *clp);

extern u32 nfs4_alloc_lockowner_id(struct nfs4_client *);

fs/nfs/nfs4proc.c

+5 −5
Original line number Diff line number Diff line
@@ -2846,7 +2846,7 @@ int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct 
	return nfs4_map_errors(ret);

}



int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short port)

int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short port, struct rpc_cred *cred)

{

	nfs4_verifier sc_verifier;

	struct nfs4_setclientid setclientid = {
@@ -2857,7 +2857,7 @@ int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short p 
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],

		.rpc_argp = &setclientid,

		.rpc_resp = clp,

		.rpc_cred = clp->cl_cred,

		.rpc_cred = cred,

	};

	u32 *p;

	int loop = 0;
@@ -2871,7 +2871,7 @@ int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short p 
		setclientid.sc_name_len = scnprintf(setclientid.sc_name,

				sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u",

				clp->cl_ipaddr, NIPQUAD(clp->cl_addr.s_addr),

				clp->cl_cred->cr_ops->cr_name,

				cred->cr_ops->cr_name,

				clp->cl_id_uniquifier);

		setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,

				sizeof(setclientid.sc_netid), "tcp");
@@ -2894,14 +2894,14 @@ int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short p 
}



int

nfs4_proc_setclientid_confirm(struct nfs4_client *clp)

nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)

{

	struct nfs_fsinfo fsinfo;

	struct rpc_message msg = {

		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],

		.rpc_argp = clp,

		.rpc_resp = &fsinfo,

		.rpc_cred = clp->cl_cred,

		.rpc_cred = cred,

	};

	unsigned long now;

	int status;

fs/nfs/nfs4state.c

+45 −26
Original line number Diff line number Diff line
@@ -91,11 +91,10 @@ nfs4_alloc_client(struct in_addr *addr) 


	if (nfs_callback_up() < 0)

		return NULL;

	if ((clp = kmalloc(sizeof(*clp), GFP_KERNEL)) == NULL) {

	if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL) {

		nfs_callback_down();

		return NULL;

	}

	memset(clp, 0, sizeof(*clp));

	memcpy(&clp->cl_addr, addr, sizeof(clp->cl_addr));

	init_rwsem(&clp->cl_sem);

	INIT_LIST_HEAD(&clp->cl_delegations);
@@ -108,7 +107,7 @@ nfs4_alloc_client(struct in_addr *addr) 
	rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS4 client");

	clp->cl_rpcclient = ERR_PTR(-EINVAL);

	clp->cl_boot_time = CURRENT_TIME;

	clp->cl_state = 0;

	clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;

	return clp;

}
@@ -125,8 +124,6 @@ nfs4_free_client(struct nfs4_client *clp) 
		kfree(sp);

	}

	BUG_ON(!list_empty(&clp->cl_state_owners));

	if (clp->cl_cred)

		put_rpccred(clp->cl_cred);

	nfs_idmap_delete(clp);

	if (!IS_ERR(clp->cl_rpcclient))

		rpc_shutdown_client(clp->cl_rpcclient);
@@ -196,21 +193,17 @@ nfs4_put_client(struct nfs4_client *clp) 
	nfs4_free_client(clp);

}



static int __nfs4_init_client(struct nfs4_client *clp)

static int nfs4_init_client(struct nfs4_client *clp, struct rpc_cred *cred)

{

	int status = nfs4_proc_setclientid(clp, NFS4_CALLBACK, nfs_callback_tcpport);

	int status = nfs4_proc_setclientid(clp, NFS4_CALLBACK,

			nfs_callback_tcpport, cred);

	if (status == 0)

		status = nfs4_proc_setclientid_confirm(clp);

		status = nfs4_proc_setclientid_confirm(clp, cred);

	if (status == 0)

		nfs4_schedule_state_renewal(clp);

	return status;

}



int nfs4_init_client(struct nfs4_client *clp)

{

	return nfs4_map_errors(__nfs4_init_client(clp));

}



u32

nfs4_alloc_lockowner_id(struct nfs4_client *clp)

{
@@ -246,6 +239,18 @@ struct rpc_cred *nfs4_get_renew_cred(struct nfs4_client *clp) 
	return cred;

}



struct rpc_cred *nfs4_get_setclientid_cred(struct nfs4_client *clp)

{

	struct nfs4_state_owner *sp;



	if (!list_empty(&clp->cl_state_owners)) {

		sp = list_entry(clp->cl_state_owners.next,

				struct nfs4_state_owner, so_list);

		return get_rpccred(sp->so_cred);

	}

	return NULL;

}



static struct nfs4_state_owner *

nfs4_find_state_owner(struct nfs4_client *clp, struct rpc_cred *cred)

{
@@ -902,6 +907,7 @@ static int reclaimer(void *ptr) 
	struct nfs4_client *clp = ptr;

	struct nfs4_state_owner *sp;

	struct nfs4_state_recovery_ops *ops;

	struct rpc_cred *cred;

	int status = 0;



	allow_signal(SIGKILL);
@@ -913,20 +919,33 @@ static int reclaimer(void *ptr) 
	if (list_empty(&clp->cl_superblocks))

		goto out;

restart_loop:

	status = nfs4_proc_renew(clp, clp->cl_cred);

	ops = &nfs4_network_partition_recovery_ops;

	/* Are there any open files on this volume? */

	cred = nfs4_get_renew_cred(clp);

	if (cred != NULL) {

		/* Yes there are: try to renew the old lease */

		status = nfs4_proc_renew(clp, cred);

		switch (status) {

			case 0:

			case -NFS4ERR_CB_PATH_DOWN:

				put_rpccred(cred);

				goto out;

			case -NFS4ERR_STALE_CLIENTID:

			case -NFS4ERR_LEASE_MOVED:

				ops = &nfs4_reboot_recovery_ops;

			break;

		default:

			ops = &nfs4_network_partition_recovery_ops;

	};

		}

	} else {

		/* "reboot" to ensure we clear all state on the server */

		clp->cl_boot_time = CURRENT_TIME;

		cred = nfs4_get_setclientid_cred(clp);

	}

	/* We're going to have to re-establish a clientid */

	nfs4_state_mark_reclaim(clp);

	status = __nfs4_init_client(clp);

	status = -ENOENT;

	if (cred != NULL) {

		status = nfs4_init_client(clp, cred);

		put_rpccred(cred);

	}

	if (status)

		goto out_error;

	/* Mark all delegations for reclaim */