Merge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/n…

…fs-2.6

* 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  SUNRPC: AUTH_SYS "machine creds" shouldn't use negative valued uid/gid
  nfs: make nfs4_drop_state_owner() static
  nfs: path_{get,put}() cleanups
  nfs: replace remaining __FUNCTION__ occurrences
  nfs/lsm: make NFSv4 set LSM mount options
  NFSv4: Check the return value of decode_compound_hdr_arg()
  nfs: fix race in nfs_dirty_request
  NFS: Ensure that 'noac' and/or 'actimeo=0' turn off attribute caching

fs/nfs/callback.c

@@ -182,7 +182,7 @@ static int nfs_callback_authenticate(struct svc_rqst *rqstp)
 	if (clp == NULL)
 		return SVC_DROP;
 
-	dprintk("%s: %s NFSv4 callback!\n", __FUNCTION__,
+	dprintk("%s: %s NFSv4 callback!\n", __func__,
 			svc_print_addr(rqstp, buf, sizeof(buf)));
 	nfs_put_client(clp);
 

fs/nfs/callback_proc.c

@@ -57,7 +57,7 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *
 out_putclient:
 	nfs_put_client(clp);
 out:
-	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res->status));
+	dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status));
 	return res->status;
 }
 
@@ -98,6 +98,6 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
 		nfs_put_client(prev);
 	} while (clp != NULL);
 out:
-	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res));
+	dprintk("%s: exit with status = %d\n", __func__, ntohl(res));
 	return res;
 }

fs/nfs/callback_xdr.c

@@ -141,7 +141,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
 	/* We do not like overly long tags! */
 	if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) {
 		printk("NFSv4 CALLBACK %s: client sent tag of length %u\n",
-				__FUNCTION__, hdr->taglen);
+				__func__, hdr->taglen);
 		return htonl(NFS4ERR_RESOURCE);
 	}
 	p = read_buf(xdr, 12);
@@ -151,7 +151,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
 	/* Check minor version is zero. */
 	if (minor_version != 0) {
 		printk(KERN_WARNING "%s: NFSv4 server callback with illegal minor version %u!\n",
-				__FUNCTION__, minor_version);
+				__func__, minor_version);
 		return htonl(NFS4ERR_MINOR_VERS_MISMATCH);
 	}
 	hdr->callback_ident = ntohl(*p++);
@@ -179,7 +179,7 @@ static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr
 	args->addr = svc_addr(rqstp);
 	status = decode_bitmap(xdr, args->bitmap);
 out:
-	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status));
+	dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
 	return status;
 }
 
@@ -200,7 +200,7 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr,
 	args->truncate = ntohl(*p);
 	status = decode_fh(xdr, &args->fh);
 out:
-	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status));
+	dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
 	return status;
 }
 
@@ -349,7 +349,7 @@ static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr,
 	status = encode_attr_mtime(xdr, res->bitmap, &res->mtime);
 	*savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1)));
 out:
-	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status));
+	dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
 	return status;
 }
 
@@ -363,7 +363,7 @@ static __be32 process_op(struct svc_rqst *rqstp,
 	long maxlen;
 	__be32 res;
 
-	dprintk("%s: start\n", __FUNCTION__);
+	dprintk("%s: start\n", __func__);
 	status = decode_op_hdr(xdr_in, &op_nr);
 	if (likely(status == 0)) {
 		switch (op_nr) {
@@ -392,7 +392,7 @@ static __be32 process_op(struct svc_rqst *rqstp,
 		status = res;
 	if (op->encode_res != NULL && status == 0)
 		status = op->encode_res(rqstp, xdr_out, resp);
-	dprintk("%s: done, status = %d\n", __FUNCTION__, ntohl(status));
+	dprintk("%s: done, status = %d\n", __func__, ntohl(status));
 	return status;
 }
 
@@ -401,37 +401,37 @@ static __be32 process_op(struct svc_rqst *rqstp,
  */
 static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp)
 {
-	struct cb_compound_hdr_arg hdr_arg;
-	struct cb_compound_hdr_res hdr_res;
+	struct cb_compound_hdr_arg hdr_arg = { 0 };
+	struct cb_compound_hdr_res hdr_res = { NULL };
 	struct xdr_stream xdr_in, xdr_out;
 	__be32 *p;
 	__be32 status;
-	unsigned int nops = 1;
+	unsigned int nops = 0;
 
-	dprintk("%s: start\n", __FUNCTION__);
+	dprintk("%s: start\n", __func__);
 
 	xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base);
 
 	p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len);
 	xdr_init_encode(&xdr_out, &rqstp->rq_res, p);
 
-	decode_compound_hdr_arg(&xdr_in, &hdr_arg);
+	status = decode_compound_hdr_arg(&xdr_in, &hdr_arg);
+	if (status == __constant_htonl(NFS4ERR_RESOURCE))
+		return rpc_garbage_args;
+
 	hdr_res.taglen = hdr_arg.taglen;
 	hdr_res.tag = hdr_arg.tag;
-	hdr_res.nops = NULL;
-	encode_compound_hdr_res(&xdr_out, &hdr_res);
+	if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0)
+		return rpc_system_err;
 
-	for (;;) {
+	while (status == 0 && nops != hdr_arg.nops) {
 		status = process_op(rqstp, &xdr_in, argp, &xdr_out, resp);
-		if (status != 0)
-			break;
-		if (nops == hdr_arg.nops)
-			break;
 		nops++;
 	}
+
 	*hdr_res.status = status;
 	*hdr_res.nops = htonl(nops);
-	dprintk("%s: done, status = %u\n", __FUNCTION__, ntohl(status));
+	dprintk("%s: done, status = %u\n", __func__, ntohl(status));
 	return rpc_success;
 }
 

fs/nfs/client.c

@@ -488,7 +488,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp,
 	clnt = rpc_create(&args);
 	if (IS_ERR(clnt)) {
 		dprintk("%s: cannot create RPC client. Error = %ld\n",
-				__FUNCTION__, PTR_ERR(clnt));
+				__func__, PTR_ERR(clnt));
 		return PTR_ERR(clnt);
 	}
 
@@ -576,7 +576,7 @@ static int nfs_init_server_rpcclient(struct nfs_server *server,
 
 	server->client = rpc_clone_client(clp->cl_rpcclient);
 	if (IS_ERR(server->client)) {
-		dprintk("%s: couldn't create rpc_client!\n", __FUNCTION__);
+		dprintk("%s: couldn't create rpc_client!\n", __func__);
 		return PTR_ERR(server->client);
 	}
 
@@ -590,7 +590,7 @@ static int nfs_init_server_rpcclient(struct nfs_server *server,
 
 		auth = rpcauth_create(pseudoflavour, server->client);
 		if (IS_ERR(auth)) {
-			dprintk("%s: couldn't create credcache!\n", __FUNCTION__);
+			dprintk("%s: couldn't create credcache!\n", __func__);
 			return PTR_ERR(auth);
 		}
 	}
@@ -985,7 +985,7 @@ static int nfs4_init_client(struct nfs_client *clp,
 	error = nfs_idmap_new(clp);
 	if (error < 0) {
 		dprintk("%s: failed to create idmapper. Error = %d\n",
-			__FUNCTION__, error);
+			__func__, error);
 		goto error;
 	}
 	__set_bit(NFS_CS_IDMAP, &clp->cl_res_state);

fs/nfs/delegation.c

@@ -60,7 +60,7 @@ static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_
 		switch (status) {
 			default:
 				printk(KERN_ERR "%s: unhandled error %d.\n",
-						__FUNCTION__, status);
+						__func__, status);
 			case -NFS4ERR_EXPIRED:
 				/* kill_proc(fl->fl_pid, SIGLOST, 1); */
 			case -NFS4ERR_STALE_CLIENTID:
@@ -186,7 +186,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
 		 */
 		dfprintk(FILE, "%s: server %s handed out "
 				"a duplicate delegation!\n",
-				__FUNCTION__, clp->cl_hostname);
+				__func__, clp->cl_hostname);
 		if (delegation->type <= nfsi->delegation->type) {
 			freeme = delegation;
 			delegation = NULL;

fs/nfs/dir.c

@@ -180,7 +180,7 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
 	int		error;
 
 	dfprintk(DIRCACHE, "NFS: %s: reading cookie %Lu into page %lu\n",
-			__FUNCTION__, (long long)desc->entry->cookie,
+			__func__, (long long)desc->entry->cookie,
 			page->index);
 
  again:
@@ -256,7 +256,7 @@ int find_dirent(nfs_readdir_descriptor_t *desc)
 
 	while((status = dir_decode(desc)) == 0) {
 		dfprintk(DIRCACHE, "NFS: %s: examining cookie %Lu\n",
-				__FUNCTION__, (unsigned long long)entry->cookie);
+				__func__, (unsigned long long)entry->cookie);
 		if (entry->prev_cookie == *desc->dir_cookie)
 			break;
 		if (loop_count++ > 200) {
@@ -315,7 +315,7 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc)
 	int		status;
 
 	dfprintk(DIRCACHE, "NFS: %s: searching page %ld for target %Lu\n",
-			__FUNCTION__, desc->page_index,
+			__func__, desc->page_index,
 			(long long) *desc->dir_cookie);
 
 	/* If we find the page in the page_cache, we cannot be sure
@@ -339,7 +339,7 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc)
 	if (status < 0)
 		dir_page_release(desc);
  out:
-	dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __FUNCTION__, status);
+	dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __func__, status);
 	return status;
 }
 
@@ -380,7 +380,7 @@ int readdir_search_pagecache(nfs_readdir_descriptor_t *desc)
 		}
 	}
 
-	dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __FUNCTION__, res);
+	dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __func__, res);
 	return res;
 }
 
@@ -506,7 +506,7 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
 	desc->entry->eof = 0;
  out:
 	dfprintk(DIRCACHE, "NFS: %s: returns %d\n",
-			__FUNCTION__, status);
+			__func__, status);
 	return status;
  out_release:
 	dir_page_release(desc);
@@ -780,7 +780,7 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
 
 	if (is_bad_inode(inode)) {
 		dfprintk(LOOKUPCACHE, "%s: %s/%s has dud inode\n",
-				__FUNCTION__, dentry->d_parent->d_name.name,
+				__func__, dentry->d_parent->d_name.name,
 				dentry->d_name.name);
 		goto out_bad;
 	}
@@ -808,7 +808,7 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
 	unlock_kernel();
 	dput(parent);
 	dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is valid\n",
-			__FUNCTION__, dentry->d_parent->d_name.name,
+			__func__, dentry->d_parent->d_name.name,
 			dentry->d_name.name);
 	return 1;
 out_zap_parent:
@@ -827,7 +827,7 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
 	unlock_kernel();
 	dput(parent);
 	dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is invalid\n",
-			__FUNCTION__, dentry->d_parent->d_name.name,
+			__func__, dentry->d_parent->d_name.name,
 			dentry->d_name.name);
 	return 0;
 }

fs/nfs/file.c

@@ -526,7 +526,7 @@ static int do_vfs_lock(struct file *file, struct file_lock *fl)
 	if (res < 0)
 		dprintk(KERN_WARNING "%s: VFS is out of sync with lock manager"
 			" - error %d!\n",
-				__FUNCTION__, res);
+				__func__, res);
 	return res;
 }
 

fs/nfs/inode.c

@@ -541,8 +541,7 @@ static void __put_nfs_open_context(struct nfs_open_context *ctx, int wait)
 	}
 	if (ctx->cred != NULL)
 		put_rpccred(ctx->cred);
-	dput(ctx->path.dentry);
-	mntput(ctx->path.mnt);
+	path_put(&ctx->path);
 	kfree(ctx);
 }
 
@@ -707,6 +706,13 @@ int nfs_attribute_timeout(struct inode *inode)
 
 	if (nfs_have_delegation(inode, FMODE_READ))
 		return 0;
+	/*
+	 * Special case: if the attribute timeout is set to 0, then always
+	 * 		 treat the cache as having expired (unless holding
+	 * 		 a delegation).
+	 */
+	if (nfsi->attrtimeo == 0)
+		return 1;
 	return !time_in_range(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
 }
 
@@ -995,7 +1001,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 	unsigned long now = jiffies;
 
 	dfprintk(VFS, "NFS: %s(%s/%ld ct=%d info=0x%x)\n",
-			__FUNCTION__, inode->i_sb->s_id, inode->i_ino,
+			__func__, inode->i_sb->s_id, inode->i_ino,
 			atomic_read(&inode->i_count), fattr->valid);
 
 	if (nfsi->fileid != fattr->fileid)
@@ -1119,7 +1125,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 	 * Big trouble! The inode has become a different object.
 	 */
 	printk(KERN_DEBUG "%s: inode %ld mode changed, %07o to %07o\n",
-			__FUNCTION__, inode->i_ino, inode->i_mode, fattr->mode);
+			__func__, inode->i_ino, inode->i_mode, fattr->mode);
  out_err:
 	/*
 	 * No need to worry about unhashing the dentry, as the

fs/nfs/namespace.c

@@ -106,7 +106,7 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
 	dprintk("--> nfs_follow_mountpoint()\n");
 
 	BUG_ON(IS_ROOT(dentry));
-	dprintk("%s: enter\n", __FUNCTION__);
+	dprintk("%s: enter\n", __func__);
 	dput(nd->path.dentry);
 	nd->path.dentry = dget(dentry);
 
@@ -137,13 +137,12 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
 			goto out_follow;
 		goto out_err;
 	}
-	mntput(nd->path.mnt);
-	dput(nd->path.dentry);
+	path_put(&nd->path);
 	nd->path.mnt = mnt;
 	nd->path.dentry = dget(mnt->mnt_root);
 	schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout);
 out:
-	dprintk("%s: done, returned %d\n", __FUNCTION__, err);
+	dprintk("%s: done, returned %d\n", __func__, err);
 
 	dprintk("<-- nfs_follow_mountpoint() = %d\n", err);
 	return ERR_PTR(err);
@@ -230,7 +229,7 @@ static struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
 
 	dprintk("--> nfs_do_submount()\n");
 
-	dprintk("%s: submounting on %s/%s\n", __FUNCTION__,
+	dprintk("%s: submounting on %s/%s\n", __func__,
 			dentry->d_parent->d_name.name,
 			dentry->d_name.name);
 	if (page == NULL)
@@ -243,7 +242,7 @@ static struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
 free_page:
 	free_page((unsigned long)page);
 out:
-	dprintk("%s: done\n", __FUNCTION__);
+	dprintk("%s: done\n", __func__);
 
 	dprintk("<-- nfs_do_submount() = %p\n", mnt);
 	return mnt;

fs/nfs/nfs3proc.c

@@ -63,15 +63,15 @@ do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
 	};
 	int	status;
 
-	dprintk("%s: call  fsinfo\n", __FUNCTION__);
+	dprintk("%s: call  fsinfo\n", __func__);
 	nfs_fattr_init(info->fattr);
 	status = rpc_call_sync(client, &msg, 0);
-	dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status);
+	dprintk("%s: reply fsinfo: %d\n", __func__, status);
 	if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
 		msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
 		msg.rpc_resp = info->fattr;
 		status = rpc_call_sync(client, &msg, 0);
-		dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
+		dprintk("%s: reply getattr: %d\n", __func__, status);
 	}
 	return status;
 }

fs/nfs/nfs4_fs.h

@@ -206,7 +206,6 @@ struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp);
 
 extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
 extern void nfs4_put_state_owner(struct nfs4_state_owner *);
-extern void nfs4_drop_state_owner(struct nfs4_state_owner *);
 extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
 extern void nfs4_put_open_state(struct nfs4_state *);
 extern void nfs4_close_state(struct path *, struct nfs4_state *, mode_t);