Merge branch 'nfs-server-stable' of git://linux-nfs.org/~bfields/linux

* 'nfs-server-stable' of git://linux-nfs.org/~bfields/linux:
  knfsd: query filesystem for NFSv4 getattr of FATTR4_MAXNAME
  knfsd: nfsv4 delegation recall should take reference on client
  knfsd: don't shutdown callbacks until nfsv4 client is freed
  knfsd: let nfsd manage timing out its own leases
  knfsd: Add source address to sunrpc svc errors
  knfsd: 64 bit ino support for NFS server
  svcgss: move init code into separate function
  knfsd: remove code duplication in nfsd4_setclientid()
  nfsd warning fix
  knfsd: fix callback rpc cred
  knfsd: move nfsv4 slab creation/destruction to module init/exit
  knfsd: spawn kernel thread to probe callback channel
  knfsd: nfs4 name->id mapping not correctly parsing negative downcall
  knfsd: demote some printk()s to dprintk()s
  knfsd: cleanup of nfsd4 cmp_* functions
  knfsd: delete code made redundant by map_new_errors
  nfsd: fix horrible indentation in nfsd_setattr
  nfsd: remove unused cache_for_each macro
  nfsd: tone down inaccurate dprintk

fs/nfsd/nfs3xdr.c

@@ -174,9 +174,6 @@ static __be32 *
 encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
 	      struct kstat *stat)
 {
-	struct dentry	*dentry = fhp->fh_dentry;
-	struct timespec time;
-
 	*p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
 	*p++ = htonl((u32) stat->mode);
 	*p++ = htonl((u32) stat->nlink);
@@ -191,10 +188,9 @@ encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
 	*p++ = htonl((u32) MAJOR(stat->rdev));
 	*p++ = htonl((u32) MINOR(stat->rdev));
 	p = encode_fsid(p, fhp);
-	p = xdr_encode_hyper(p, (u64) stat->ino);
+	p = xdr_encode_hyper(p, stat->ino);
 	p = encode_time3(p, &stat->atime);
-	lease_get_mtime(dentry->d_inode, &time); 
-	p = encode_time3(p, &time);
+	p = encode_time3(p, &stat->mtime);
 	p = encode_time3(p, &stat->ctime);
 
 	return p;
@@ -203,31 +199,9 @@ encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
 static __be32 *
 encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
 {
-	struct inode	*inode = fhp->fh_dentry->d_inode;
-
 	/* Attributes to follow */
 	*p++ = xdr_one;
-
-	*p++ = htonl(nfs3_ftypes[(fhp->fh_post_mode & S_IFMT) >> 12]);
-	*p++ = htonl((u32) fhp->fh_post_mode);
-	*p++ = htonl((u32) fhp->fh_post_nlink);
-	*p++ = htonl((u32) nfsd_ruid(rqstp, fhp->fh_post_uid));
-	*p++ = htonl((u32) nfsd_rgid(rqstp, fhp->fh_post_gid));
-	if (S_ISLNK(fhp->fh_post_mode) && fhp->fh_post_size > NFS3_MAXPATHLEN) {
-		p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
-	} else {
-		p = xdr_encode_hyper(p, (u64) fhp->fh_post_size);
-	}
-	p = xdr_encode_hyper(p, ((u64)fhp->fh_post_blocks) << 9);
-	*p++ = fhp->fh_post_rdev[0];
-	*p++ = fhp->fh_post_rdev[1];
-	p = encode_fsid(p, fhp);
-	p = xdr_encode_hyper(p, (u64) inode->i_ino);
-	p = encode_time3(p, &fhp->fh_post_atime);
-	p = encode_time3(p, &fhp->fh_post_mtime);
-	p = encode_time3(p, &fhp->fh_post_ctime);
-
-	return p;
+	return encode_fattr3(rqstp, p, fhp, &fhp->fh_post_attr);
 }
 
 /*
@@ -246,6 +220,7 @@ encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
 		err = vfs_getattr(fhp->fh_export->ex_mnt, dentry, &stat);
 		if (!err) {
 			*p++ = xdr_one;		/* attributes follow */
+			lease_get_mtime(dentry->d_inode, &stat.mtime);
 			return encode_fattr3(rqstp, p, fhp, &stat);
 		}
 	}
@@ -284,6 +259,23 @@ encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
 	return encode_post_op_attr(rqstp, p, fhp);
 }
 
+/*
+ * Fill in the post_op attr for the wcc data
+ */
+void fill_post_wcc(struct svc_fh *fhp)
+{
+	int err;
+
+	if (fhp->fh_post_saved)
+		printk("nfsd: inode locked twice during operation.\n");
+
+	err = vfs_getattr(fhp->fh_export->ex_mnt, fhp->fh_dentry,
+			&fhp->fh_post_attr);
+	if (err)
+		fhp->fh_post_saved = 0;
+	else
+		fhp->fh_post_saved = 1;
+}
 
 /*
  * XDR decode functions
@@ -643,8 +635,11 @@ int
 nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p,
 					struct nfsd3_attrstat *resp)
 {
-	if (resp->status == 0)
+	if (resp->status == 0) {
+		lease_get_mtime(resp->fh.fh_dentry->d_inode,
+				&resp->stat.mtime);
 		p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat);
+	}
 	return xdr_ressize_check(rqstp, p);
 }
 
@@ -802,7 +797,7 @@ nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p,
 
 static __be32 *
 encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name,
-	     int namlen, ino_t ino)
+	     int namlen, u64 ino)
 {
 	*p++ = xdr_one;				 /* mark entry present */
 	p    = xdr_encode_hyper(p, ino);	 /* file id */
@@ -873,7 +868,7 @@ compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp,
 #define NFS3_ENTRYPLUS_BAGGAGE	(1 + 21 + 1 + (NFS3_FHSIZE >> 2))
 static int
 encode_entry(struct readdir_cd *ccd, const char *name, int namlen,
-	     loff_t offset, ino_t ino, unsigned int d_type, int plus)
+	     loff_t offset, u64 ino, unsigned int d_type, int plus)
 {
 	struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres,
 		       					common);

fs/nfsd/nfs4callback.c

@@ -39,6 +39,7 @@
 #include <linux/errno.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
+#include <linux/kthread.h>
 #include <linux/sunrpc/xdr.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/sunrpc/clnt.h>
@@ -343,26 +344,28 @@ static struct rpc_version *	nfs_cb_version[] = {
 	&nfs_cb_version4,
 };
 
-/*
- * Use the SETCLIENTID credential
- */
-static struct rpc_cred *
-nfsd4_lookupcred(struct nfs4_client *clp, int taskflags)
+/* Reference counting, callback cleanup, etc., all look racy as heck.
+ * And why is cb_set an atomic? */
+
+static int do_probe_callback(void *data)
 {
-        struct auth_cred acred;
-	struct rpc_clnt *clnt = clp->cl_callback.cb_client;
-	struct rpc_cred *ret;
-
-        get_group_info(clp->cl_cred.cr_group_info);
-        acred.uid = clp->cl_cred.cr_uid;
-        acred.gid = clp->cl_cred.cr_gid;
-        acred.group_info = clp->cl_cred.cr_group_info;
-
-        dprintk("NFSD:     looking up %s cred\n",
-                clnt->cl_auth->au_ops->au_name);
-        ret = rpcauth_lookup_credcache(clnt->cl_auth, &acred, taskflags);
-        put_group_info(clp->cl_cred.cr_group_info);
-        return ret;
+	struct nfs4_client *clp = data;
+	struct nfs4_callback *cb = &clp->cl_callback;
+	struct rpc_message msg = {
+		.rpc_proc       = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
+		.rpc_argp       = clp,
+	};
+	int status;
+
+	status = rpc_call_sync(cb->cb_client, &msg, RPC_TASK_SOFT);
+
+	if (status) {
+		rpc_shutdown_client(cb->cb_client);
+		cb->cb_client = NULL;
+	} else
+		atomic_set(&cb->cb_set, 1);
+	put_nfs4_client(clp);
+	return 0;
 }
 
 /*
@@ -390,11 +393,7 @@ nfsd4_probe_callback(struct nfs4_client *clp)
 		.authflavor	= RPC_AUTH_UNIX,	/* XXX: need AUTH_GSS... */
 		.flags		= (RPC_CLNT_CREATE_NOPING),
 	};
-	struct rpc_message msg = {
-		.rpc_proc       = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
-		.rpc_argp       = clp,
-	};
-	int status;
+	struct task_struct *t;
 
 	if (atomic_read(&cb->cb_set))
 		return;
@@ -426,16 +425,11 @@ nfsd4_probe_callback(struct nfs4_client *clp)
 	/* the task holds a reference to the nfs4_client struct */
 	atomic_inc(&clp->cl_count);
 
-	msg.rpc_cred = nfsd4_lookupcred(clp,0);
-	if (IS_ERR(msg.rpc_cred))
-		goto out_release_clp;
-	status = rpc_call_async(cb->cb_client, &msg, RPC_TASK_ASYNC, &nfs4_cb_null_ops, NULL);
-	put_rpccred(msg.rpc_cred);
+	t = kthread_run(do_probe_callback, clp, "nfs4_cb_probe");
 
-	if (status != 0) {
-		dprintk("NFSD: asynchronous NFSPROC4_CB_NULL failed!\n");
+	if (IS_ERR(t))
 		goto out_release_clp;
-	}
+
 	return;
 
 out_release_clp:
@@ -447,30 +441,6 @@ nfsd4_probe_callback(struct nfs4_client *clp)
 		(int)clp->cl_name.len, clp->cl_name.data);
 }
 
-static void
-nfs4_cb_null(struct rpc_task *task, void *dummy)
-{
-	struct nfs4_client *clp = (struct nfs4_client *)task->tk_msg.rpc_argp;
-	struct nfs4_callback *cb = &clp->cl_callback;
-	__be32 addr = htonl(cb->cb_addr);
-
-	dprintk("NFSD: nfs4_cb_null task->tk_status %d\n", task->tk_status);
-
-	if (task->tk_status < 0) {
-		dprintk("NFSD: callback establishment to client %.*s failed\n",
-			(int)clp->cl_name.len, clp->cl_name.data);
-		goto out;
-	}
-	atomic_set(&cb->cb_set, 1);
-	dprintk("NFSD: callback set to client %u.%u.%u.%u\n", NIPQUAD(addr));
-out:
-	put_nfs4_client(clp);
-}
-
-static const struct rpc_call_ops nfs4_cb_null_ops = {
-	.rpc_call_done = nfs4_cb_null,
-};
-
 /*
  * called with dp->dl_count inc'ed.
  * nfs4_lock_state() may or may not have been called.
@@ -491,10 +461,6 @@ nfsd4_cb_recall(struct nfs4_delegation *dp)
 	if ((!atomic_read(&clp->cl_callback.cb_set)) || !clnt)
 		return;
 
-	msg.rpc_cred = nfsd4_lookupcred(clp, 0);
-	if (IS_ERR(msg.rpc_cred))
-		goto out;
-
 	cbr->cbr_trunc = 0; /* XXX need to implement truncate optimization */
 	cbr->cbr_dp = dp;
 
@@ -515,13 +481,12 @@ nfsd4_cb_recall(struct nfs4_delegation *dp)
 		status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
 	}
 out_put_cred:
-	put_rpccred(msg.rpc_cred);
-out:
 	if (status == -EIO)
 		atomic_set(&clp->cl_callback.cb_set, 0);
 	/* Success or failure, now we're either waiting for lease expiration
 	 * or deleg_return. */
 	dprintk("NFSD: nfs4_cb_recall: dp %p dl_flock %p dl_count %d\n",dp, dp->dl_flock, atomic_read(&dp->dl_count));
+	put_nfs4_client(clp);
 	nfs4_put_delegation(dp);
 	return;
 }

fs/nfsd/nfs4idmap.c

@@ -207,6 +207,7 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
 {
 	struct ent ent, *res;
 	char *buf1, *bp;
+	int len;
 	int error = -EINVAL;
 
 	if (buf[buflen - 1] != '\n')
@@ -248,10 +249,11 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
 		goto out;
 
 	/* Name */
-	error = qword_get(&buf, buf1, PAGE_SIZE);
-	if (error == -EINVAL)
+	error = -EINVAL;
+	len = qword_get(&buf, buf1, PAGE_SIZE);
+	if (len < 0)
 		goto out;
-	if (error == -ENOENT)
+	if (len == 0)
 		set_bit(CACHE_NEGATIVE, &ent.h.flags);
 	else {
 		if (error >= IDMAP_NAMESZ) {

fs/nfsd/nfs4proc.c

@@ -238,12 +238,12 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 			break;
              	case NFS4_OPEN_CLAIM_DELEGATE_PREV:
 			open->op_stateowner->so_confirmed = 1;
-			printk("NFSD: unsupported OPEN claim type %d\n",
+			dprintk("NFSD: unsupported OPEN claim type %d\n",
 				open->op_claim_type);
 			status = nfserr_notsupp;
 			goto out;
 		default:
-			printk("NFSD: Invalid OPEN claim type %d\n",
+			dprintk("NFSD: Invalid OPEN claim type %d\n",
 				open->op_claim_type);
 			status = nfserr_inval;
 			goto out;

fs/nfsd/nfs4xdr.c

@@ -1475,7 +1475,8 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 	err = vfs_getattr(exp->ex_mnt, dentry, &stat);
 	if (err)
 		goto out_nfserr;
-	if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) ||
+	if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
+			FATTR4_WORD0_MAXNAME)) ||
 	    (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
 		       FATTR4_WORD1_SPACE_TOTAL))) {
 		err = vfs_statfs(dentry, &statfs);
@@ -1679,7 +1680,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 	if (bmval0 & FATTR4_WORD0_FILEID) {
 		if ((buflen -= 8) < 0)
 			goto out_resource;
-		WRITE64((u64) stat.ino);
+		WRITE64(stat.ino);
 	}
 	if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
 		if ((buflen -= 8) < 0)
@@ -1721,7 +1722,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 	if (bmval0 & FATTR4_WORD0_MAXNAME) {
 		if ((buflen -= 4) < 0)
 			goto out_resource;
-		WRITE32(~(u32) 0);
+		WRITE32(statfs.f_namelen);
 	}
 	if (bmval0 & FATTR4_WORD0_MAXREAD) {
 		if ((buflen -= 8) < 0)
@@ -1821,16 +1822,15 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 		WRITE32(stat.mtime.tv_nsec);
 	}
 	if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
-		struct dentry *mnt_pnt, *mnt_root;
-
 		if ((buflen -= 8) < 0)
                 	goto out_resource;
-		mnt_root = exp->ex_mnt->mnt_root;
-		if (mnt_root->d_inode == dentry->d_inode) {
-			mnt_pnt = exp->ex_mnt->mnt_mountpoint;
-			WRITE64((u64) mnt_pnt->d_inode->i_ino);
-		} else
-                	WRITE64((u64) stat.ino);
+		if (exp->ex_mnt->mnt_root->d_inode == dentry->d_inode) {
+			err = vfs_getattr(exp->ex_mnt->mnt_parent,
+				exp->ex_mnt->mnt_mountpoint, &stat);
+			if (err)
+				goto out_nfserr;
+		}
+		WRITE64(stat.ino);
 	}
 	*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
 	*countp = p - buffer;

fs/nfsd/nfsctl.c

@@ -298,7 +298,7 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
 	 * qword quoting is used, so filehandle will be \x....
 	 */
 	char *dname, *path;
-	int maxsize;
+	int uninitialized_var(maxsize);
 	char *mesg = buf;
 	int len;
 	struct auth_domain *dom;
@@ -679,11 +679,13 @@ static int __init init_nfsd(void)
 	int retval;
 	printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
 
+	retval = nfs4_state_init(); /* nfs4 locking state */
+	if (retval)
+		return retval;
 	nfsd_stat_init();	/* Statistics */
 	nfsd_cache_init();	/* RPC reply cache */
 	nfsd_export_init();	/* Exports table */
 	nfsd_lockd_init();	/* lockd->nfsd callbacks */
-	nfs4_state_init();	/* NFSv4 locking state */
 	nfsd_idmap_init();      /* Name to ID mapping */
 	if (proc_mkdir("fs/nfs", NULL)) {
 		struct proc_dir_entry *entry;
@@ -712,6 +714,7 @@ static void __exit exit_nfsd(void)
 	nfsd_stat_shutdown();
 	nfsd_lockd_shutdown();
 	nfsd_idmap_shutdown();
+	nfsd4_free_slabs();
 	unregister_filesystem(&nfsd_fs_type);
 }
 

fs/nfsd/nfssvc.c

@@ -349,9 +349,7 @@ nfsd_svc(unsigned short port, int nrservs)
 	error =	nfsd_racache_init(2*nrservs);
 	if (error<0)
 		goto out;
-	error = nfs4_state_start();
-	if (error<0)
-		goto out;
+	nfs4_state_start();
 
 	nfsd_reset_versions();
 
@@ -546,10 +544,8 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
 	/* Now call the procedure handler, and encode NFS status. */
 	nfserr = proc->pc_func(rqstp, rqstp->rq_argp, rqstp->rq_resp);
 	nfserr = map_new_errors(rqstp->rq_vers, nfserr);
-	if (nfserr == nfserr_jukebox && rqstp->rq_vers == 2)
-		nfserr = nfserr_dropit;
 	if (nfserr == nfserr_dropit) {
-		dprintk("nfsd: Dropping request due to malloc failure!\n");
+		dprintk("nfsd: Dropping request; may be revisited later\n");
 		nfsd_cache_update(rqstp, RC_NOCACHE, NULL);
 		return 0;
 	}

fs/nfsd/nfsxdr.c

@@ -523,6 +523,10 @@ nfssvc_encode_entry(void *ccdv, const char *name,
 		cd->common.err = nfserr_toosmall;
 		return -EINVAL;
 	}
+	if (ino > ~((u32) 0)) {
+		cd->common.err = nfserr_fbig;
+		return -EINVAL;
+	}
 	*p++ = xdr_one;				/* mark entry present */
 	*p++ = htonl((u32) ino);		/* file id */
 	p    = xdr_encode_array(p, name, namlen);/* name length & name */

fs/nfsd/vfs.c

@@ -295,7 +295,8 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
 	if (!iap->ia_valid)
 		goto out;
 
-	/* NFSv2 does not differentiate between "set-[ac]time-to-now"
+	/*
+	 * NFSv2 does not differentiate between "set-[ac]time-to-now"
 	 * which only requires access, and "set-[ac]time-to-X" which
 	 * requires ownership.
 	 * So if it looks like it might be "set both to the same time which
@@ -308,25 +309,33 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
 	 */
 #define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
 #define	MAX_TOUCH_TIME_ERROR (30*60)
-	if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET
-	    && iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec
-	    ) {
-	    /* Looks probable.  Now just make sure time is in the right ballpark.
-	     * Solaris, at least, doesn't seem to care what the time request is.
-	     * We require it be within 30 minutes of now.
-	     */
-	    time_t delta = iap->ia_atime.tv_sec - get_seconds();
-	    if (delta<0) delta = -delta;
-	    if (delta < MAX_TOUCH_TIME_ERROR &&
-		inode_change_ok(inode, iap) != 0) {
-		/* turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME
-		 * this will cause notify_change to set these times to "now"
+	if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
+	    iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
+		/*
+		 * Looks probable.
+		 *
+		 * Now just make sure time is in the right ballpark.
+		 * Solaris, at least, doesn't seem to care what the time
+		 * request is.  We require it be within 30 minutes of now.
 		 */
-		iap->ia_valid &= ~BOTH_TIME_SET;
-	    }
+		time_t delta = iap->ia_atime.tv_sec - get_seconds();
+		if (delta < 0)
+			delta = -delta;
+		if (delta < MAX_TOUCH_TIME_ERROR &&
+		    inode_change_ok(inode, iap) != 0) {
+			/*
+			 * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
+			 * This will cause notify_change to set these times
+			 * to "now"
+			 */
+			iap->ia_valid &= ~BOTH_TIME_SET;
+		}
 	}
 	    
-	/* The size case is special. It changes the file as well as the attributes.  */
+	/*
+	 * The size case is special.
+	 * It changes the file as well as the attributes.
+	 */
 	if (iap->ia_valid & ATTR_SIZE) {
 		if (iap->ia_size < inode->i_size) {
 			err = nfsd_permission(rqstp, fhp->fh_export, dentry, MAY_TRUNC|MAY_OWNER_OVERRIDE);

include/linux/nfsd/nfsd.h

@@ -153,19 +153,21 @@ extern int nfsd_max_blksize;
  */
 #ifdef CONFIG_NFSD_V4
 extern unsigned int max_delegations;
-void nfs4_state_init(void);
-int nfs4_state_start(void);
+int nfs4_state_init(void);
+void nfsd4_free_slabs(void);
+void nfs4_state_start(void);
 void nfs4_state_shutdown(void);
 time_t nfs4_lease_time(void);
 void nfs4_reset_lease(time_t leasetime);
 int nfs4_reset_recoverydir(char *recdir);
 #else
-static inline void nfs4_state_init(void){};
-static inline int nfs4_state_start(void){return 0;}
-static inline void nfs4_state_shutdown(void){}
-static inline time_t nfs4_lease_time(void){return 0;}
-static inline void nfs4_reset_lease(time_t leasetime){}
-static inline int nfs4_reset_recoverydir(char *recdir) {return 0;}
+static inline int nfs4_state_init(void) { return 0; }
+static inline void nfsd4_free_slabs(void) { }
+static inline void nfs4_state_start(void) { }
+static inline void nfs4_state_shutdown(void) { }
+static inline time_t nfs4_lease_time(void) { return 0; }
+static inline void nfs4_reset_lease(time_t leasetime) { }
+static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
 #endif
 
 /*

include/linux/nfsd/nfsfh.h

@@ -150,17 +150,7 @@ typedef struct svc_fh {
 	struct timespec		fh_pre_ctime;	/* ctime before oper */
 
 	/* Post-op attributes saved in fh_unlock */
-	umode_t			fh_post_mode;	/* i_mode */
-	nlink_t			fh_post_nlink;	/* i_nlink */
-	uid_t			fh_post_uid;	/* i_uid */
-	gid_t			fh_post_gid;	/* i_gid */
-	__u64			fh_post_size;	/* i_size */
-	unsigned long		fh_post_blocks; /* i_blocks */
-	unsigned long		fh_post_blksize;/* i_blksize */
-	__be32			fh_post_rdev[2];/* i_rdev */
-	struct timespec		fh_post_atime;	/* i_atime */
-	struct timespec		fh_post_mtime;	/* i_mtime */
-	struct timespec		fh_post_ctime;	/* i_ctime */
+	struct kstat		fh_post_attr;	/* full attrs after operation */
 #endif /* CONFIG_NFSD_V3 */
 
 } svc_fh;
@@ -297,36 +287,12 @@ fill_pre_wcc(struct svc_fh *fhp)
 	if (!fhp->fh_pre_saved) {
 		fhp->fh_pre_mtime = inode->i_mtime;
 		fhp->fh_pre_ctime = inode->i_ctime;
-			fhp->fh_pre_size  = inode->i_size;
-			fhp->fh_pre_saved = 1;
+		fhp->fh_pre_size  = inode->i_size;
+		fhp->fh_pre_saved = 1;
 	}
 }
 
-/*
- * Fill in the post_op attr for the wcc data
- */
-static inline void
-fill_post_wcc(struct svc_fh *fhp)
-{
-	struct inode    *inode = fhp->fh_dentry->d_inode;
-
-	if (fhp->fh_post_saved)
-		printk("nfsd: inode locked twice during operation.\n");
-
-	fhp->fh_post_mode       = inode->i_mode;
-	fhp->fh_post_nlink      = inode->i_nlink;
-	fhp->fh_post_uid	= inode->i_uid;
-	fhp->fh_post_gid	= inode->i_gid;
-	fhp->fh_post_size       = inode->i_size;
-	fhp->fh_post_blksize    = BLOCK_SIZE;
-	fhp->fh_post_blocks     = inode->i_blocks;
-	fhp->fh_post_rdev[0]    = htonl((u32)imajor(inode));
-	fhp->fh_post_rdev[1]    = htonl((u32)iminor(inode));
-	fhp->fh_post_atime      = inode->i_atime;
-	fhp->fh_post_mtime      = inode->i_mtime;
-	fhp->fh_post_ctime      = inode->i_ctime;
-	fhp->fh_post_saved      = 1;
-}
+extern void fill_post_wcc(struct svc_fh *);
 #else
 #define	fill_pre_wcc(ignored)
 #define fill_post_wcc(notused)

include/linux/nfsd/xdr4.h

@@ -428,8 +428,8 @@ set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
 	cinfo->atomic = 1;
 	cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
 	cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
-	cinfo->after_ctime_sec = fhp->fh_post_ctime.tv_sec;
-	cinfo->after_ctime_nsec = fhp->fh_post_ctime.tv_nsec;
+	cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
+	cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
 }
 
 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);

include/linux/sunrpc/cache.h

@@ -136,16 +136,6 @@ sunrpc_cache_update(struct cache_detail *detail,
 		    struct cache_head *new, struct cache_head *old, int hash);
 
 
-#define cache_for_each(pos, detail, index, member) 						\
-	for (({read_lock(&(detail)->hash_lock); index = (detail)->hash_size;}) ;		\
-	     ({if (index==0)read_unlock(&(detail)->hash_lock); index--;});			\
-		)										\
-		for (pos = container_of((detail)->hash_table[index], typeof(*pos), member);	\
-		     &pos->member;								\
-		     pos = container_of(pos->member.next, typeof(*pos), member))
-
-	     
-
 extern void cache_clean_deferred(void *owner);
 
 static inline struct cache_head  *cache_get(struct cache_head *h)

net/sunrpc/auth_gss/svcauth_gss.c

@@ -631,7 +631,8 @@ svc_safe_putnetobj(struct kvec *resv, struct xdr_netobj *o)
 	return 0;
 }
 
-/* Verify the checksum on the header and return SVC_OK on success.
+/*
+ * Verify the checksum on the header and return SVC_OK on success.
  * Otherwise, return SVC_DROP (in the case of a bad sequence number)
  * or return SVC_DENIED and indicate error in authp.
  */
@@ -960,6 +961,78 @@ gss_write_init_verf(struct svc_rqst *rqstp, struct rsi *rsip)
 	return rc;
 }
 
+/*
+ * Having read the cred already and found we're in the context
+ * initiation case, read the verifier and initiate (or check the results
+ * of) upcalls to userspace for help with context initiation.  If
+ * the upcall results are available, write the verifier and result.
+ * Otherwise, drop the request pending an answer to the upcall.
+ */
+static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
+			struct rpc_gss_wire_cred *gc, __be32 *authp)
+{
+	struct kvec *argv = &rqstp->rq_arg.head[0];
+	struct kvec *resv = &rqstp->rq_res.head[0];
+	struct xdr_netobj tmpobj;
+	struct rsi *rsip, rsikey;
+
+	/* Read the verifier; should be NULL: */
+	*authp = rpc_autherr_badverf;
+	if (argv->iov_len < 2 * 4)
+		return SVC_DENIED;
+	if (svc_getnl(argv) != RPC_AUTH_NULL)
+		return SVC_DENIED;
+	if (svc_getnl(argv) != 0)
+		return SVC_DENIED;
+
+	/* Martial context handle and token for upcall: */
+	*authp = rpc_autherr_badcred;
+	if (gc->gc_proc == RPC_GSS_PROC_INIT && gc->gc_ctx.len != 0)
+		return SVC_DENIED;
+	memset(&rsikey, 0, sizeof(rsikey));
+	if (dup_netobj(&rsikey.in_handle, &gc->gc_ctx))
+		return SVC_DROP;
+	*authp = rpc_autherr_badverf;
+	if (svc_safe_getnetobj(argv, &tmpobj)) {
+		kfree(rsikey.in_handle.data);
+		return SVC_DENIED;
+	}
+	if (dup_netobj(&rsikey.in_token, &tmpobj)) {
+		kfree(rsikey.in_handle.data);
+		return SVC_DROP;
+	}
+
+	/* Perform upcall, or find upcall result: */
+	rsip = rsi_lookup(&rsikey);
+	rsi_free(&rsikey);
+	if (!rsip)
+		return SVC_DROP;
+	switch (cache_check(&rsi_cache, &rsip->h, &rqstp->rq_chandle)) {
+	case -EAGAIN:
+	case -ETIMEDOUT:
+	case -ENOENT:
+		/* No upcall result: */
+		return SVC_DROP;
+	case 0:
+		/* Got an answer to the upcall; use it: */
+		if (gss_write_init_verf(rqstp, rsip))
+			return SVC_DROP;
+		if (resv->iov_len + 4 > PAGE_SIZE)
+			return SVC_DROP;
+		svc_putnl(resv, RPC_SUCCESS);
+		if (svc_safe_putnetobj(resv, &rsip->out_handle))
+			return SVC_DROP;
+		if (resv->iov_len + 3 * 4 > PAGE_SIZE)
+			return SVC_DROP;
+		svc_putnl(resv, rsip->major_status);
+		svc_putnl(resv, rsip->minor_status);
+		svc_putnl(resv, GSS_SEQ_WIN);
+		if (svc_safe_putnetobj(resv, &rsip->out_token))
+			return SVC_DROP;
+	}
+	return SVC_COMPLETE;
+}
+
 /*
  * Accept an rpcsec packet.
  * If context establishment, punt to user space
@@ -974,11 +1047,9 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
 	struct kvec	*argv = &rqstp->rq_arg.head[0];
 	struct kvec	*resv = &rqstp->rq_res.head[0];
 	u32		crlen;
-	struct xdr_netobj tmpobj;
 	struct gss_svc_data *svcdata = rqstp->rq_auth_data;
 	struct rpc_gss_wire_cred *gc;
 	struct rsc	*rsci = NULL;
-	struct rsi	*rsip, rsikey;
 	__be32		*rpcstart;
 	__be32		*reject_stat = resv->iov_base + resv->iov_len;
 	int		ret;
@@ -1023,30 +1094,14 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
 	if ((gc->gc_proc != RPC_GSS_PROC_DATA) && (rqstp->rq_proc != 0))
 		goto auth_err;
 
-	/*
-	 * We've successfully parsed the credential. Let's check out the
-	 * verifier.  An AUTH_NULL verifier is allowed (and required) for
-	 * INIT and CONTINUE_INIT requests. AUTH_RPCSEC_GSS is required for
-	 * PROC_DATA and PROC_DESTROY.
-	 *
-	 * AUTH_NULL verifier is 0 (AUTH_NULL), 0 (length).
-	 * AUTH_RPCSEC_GSS verifier is:
-	 *   6 (AUTH_RPCSEC_GSS), length, checksum.
-	 * checksum is calculated over rpcheader from xid up to here.
-	 */
 	*authp = rpc_autherr_badverf;
 	switch (gc->gc_proc) {
 	case RPC_GSS_PROC_INIT:
 	case RPC_GSS_PROC_CONTINUE_INIT:
-		if (argv->iov_len < 2 * 4)
-			goto auth_err;
-		if (svc_getnl(argv) != RPC_AUTH_NULL)
-			goto auth_err;
-		if (svc_getnl(argv) != 0)
-			goto auth_err;
-		break;
+		return svcauth_gss_handle_init(rqstp, gc, authp);
 	case RPC_GSS_PROC_DATA:
 	case RPC_GSS_PROC_DESTROY:
+		/* Look up the context, and check the verifier: */
 		*authp = rpcsec_gsserr_credproblem;
 		rsci = gss_svc_searchbyctx(&gc->gc_ctx);
 		if (!rsci)
@@ -1067,51 +1122,6 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
 
 	/* now act upon the command: */
 	switch (gc->gc_proc) {
-	case RPC_GSS_PROC_INIT:
-	case RPC_GSS_PROC_CONTINUE_INIT:
-		*authp = rpc_autherr_badcred;
-		if (gc->gc_proc == RPC_GSS_PROC_INIT && gc->gc_ctx.len != 0)
-			goto auth_err;
-		memset(&rsikey, 0, sizeof(rsikey));
-		if (dup_netobj(&rsikey.in_handle, &gc->gc_ctx))
-			goto drop;
-		*authp = rpc_autherr_badverf;
-		if (svc_safe_getnetobj(argv, &tmpobj)) {
-			kfree(rsikey.in_handle.data);
-			goto auth_err;
-		}
-		if (dup_netobj(&rsikey.in_token, &tmpobj)) {
-			kfree(rsikey.in_handle.data);
-			goto drop;
-		}
-
-		rsip = rsi_lookup(&rsikey);
-		rsi_free(&rsikey);
-		if (!rsip) {
-			goto drop;
-		}
-		switch(cache_check(&rsi_cache, &rsip->h, &rqstp->rq_chandle)) {
-		case -EAGAIN:
-		case -ETIMEDOUT:
-		case -ENOENT:
-			goto drop;
-		case 0:
-			if (gss_write_init_verf(rqstp, rsip))
-				goto drop;
-			if (resv->iov_len + 4 > PAGE_SIZE)
-				goto drop;
-			svc_putnl(resv, RPC_SUCCESS);
-			if (svc_safe_putnetobj(resv, &rsip->out_handle))
-				goto drop;
-			if (resv->iov_len + 3 * 4 > PAGE_SIZE)
-				goto drop;
-			svc_putnl(resv, rsip->major_status);
-			svc_putnl(resv, rsip->minor_status);
-			svc_putnl(resv, GSS_SEQ_WIN);
-			if (svc_safe_putnetobj(resv, &rsip->out_token))
-				goto drop;
-		}
-		goto complete;
 	case RPC_GSS_PROC_DESTROY:
 		if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
 			goto auth_err;
@@ -1158,7 +1168,7 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
 		goto out;
 	}
 auth_err:
-	/* Restore write pointer to original value: */
+	/* Restore write pointer to its original value: */
 	xdr_ressize_check(rqstp, reject_stat);
 	ret = SVC_DENIED;
 	goto out;

net/sunrpc/svc.c

@@ -776,6 +776,30 @@ svc_register(struct svc_serv *serv, int proto, unsigned short port)
 	return error;
 }
 
+/*
+ * Printk the given error with the address of the client that caused it.
+ */
+static int
+__attribute__ ((format (printf, 2, 3)))
+svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
+{
+	va_list args;
+	int 	r;
+	char 	buf[RPC_MAX_ADDRBUFLEN];
+
+	if (!net_ratelimit())
+		return 0;
+
+	printk(KERN_WARNING "svc: %s: ",
+		svc_print_addr(rqstp, buf, sizeof(buf)));
+
+	va_start(args, fmt);
+	r = vprintk(fmt, args);
+	va_end(args);
+
+	return r;
+}
+
 /*
  * Process the RPC request.
  */
@@ -963,14 +987,13 @@ svc_process(struct svc_rqst *rqstp)
 	return 0;
 
 err_short_len:
-	if (net_ratelimit())
-		printk("svc: short len %Zd, dropping request\n", argv->iov_len);
+	svc_printk(rqstp, "short len %Zd, dropping request\n",
+			argv->iov_len);
 
 	goto dropit;			/* drop request */
 
 err_bad_dir:
-	if (net_ratelimit())
-		printk("svc: bad direction %d, dropping request\n", dir);
+	svc_printk(rqstp, "bad direction %d, dropping request\n", dir);
 
 	serv->sv_stats->rpcbadfmt++;
 	goto dropit;			/* drop request */
@@ -1000,8 +1023,7 @@ svc_process(struct svc_rqst *rqstp)
 	goto sendit;
 
 err_bad_vers:
-	if (net_ratelimit())
-		printk("svc: unknown version (%d for prog %d, %s)\n",
+	svc_printk(rqstp, "unknown version (%d for prog %d, %s)\n",
 		       vers, prog, progp->pg_name);
 
 	serv->sv_stats->rpcbadfmt++;
@@ -1011,16 +1033,14 @@ svc_process(struct svc_rqst *rqstp)
 	goto sendit;
 
 err_bad_proc:
-	if (net_ratelimit())
-		printk("svc: unknown procedure (%d)\n", proc);
+	svc_printk(rqstp, "unknown procedure (%d)\n", proc);
 
 	serv->sv_stats->rpcbadfmt++;
 	svc_putnl(resv, RPC_PROC_UNAVAIL);
 	goto sendit;
 
 err_garbage:
-	if (net_ratelimit())
-		printk("svc: failed to decode args\n");
+	svc_printk(rqstp, "failed to decode args\n");
 
 	rpc_stat = rpc_garbage_args;
 err_bad: