nfs4: Fix timeout handling code

src/add-ons/kernel/file_systems/nfs4/Filesystem.cpp

@@ -135,9 +135,10 @@ Filesystem::GetInode(ino_t id, Inode** _inode)
 	if (result != B_OK)
 		return result;
 
-	Inode* inode = new(std::nothrow)Inode(this, fi);
-	if (inode == NULL)
-		return B_NO_MEMORY;
+	Inode* inode;
+	result = Inode::CreateInode(this, fi, &inode);
+	if (result != B_OK)
+		return result;
 
 	*_inode = inode;
 	return B_OK;
@@ -151,6 +152,12 @@ Filesystem::CreateRootInode()
 	fi.fFH = fRootFH;
 	fi.fParent = fRootFH;
 	fi.fName = strdup("/");
-	return new(std::nothrow)Inode(this, fi);
+
+	Inode* inode;
+	status_t result = Inode::CreateInode(this, fi, &inode);
+	if (result == B_OK)
+		return inode;
+	else
+		return NULL;
 }
 

src/add-ons/kernel/file_systems/nfs4/Inode.cpp

@@ -15,51 +15,65 @@
 #include "Request.h"
 
 
+Inode::Inode()
+{
+}
+
+
 // Creating Inode object from Filehandle probably is not a good idea when
 // filehandles are volatile.
-Inode::Inode(Filesystem* fs, const FileInfo &fi)
-	:
-	fHandle(fi.fFH),
-	fFilesystem(fs),
-	fParentFH(fi.fParent),
-	fName(strdup(fi.fName))
+status_t
+Inode::CreateInode(Filesystem* fs, const FileInfo &fi, Inode** _inode)
 {
-	Request request(fFilesystem->Server());
+	Inode* inode = new(std::nothrow) Inode;
+	if (inode == NULL)
+		return B_NO_MEMORY;
+
+	inode->fHandle = fi.fFH;
+	inode->fFilesystem = fs;
+	inode->fParentFH = fi.fParent;
+	inode->fName = strdup(fi.fName);
+
+	Request request(fs->Server());
 	RequestBuilder& req = request.Builder();
 
-	req.PutFH(fHandle);
+	req.PutFH(inode->fHandle);
 
 	Attribute attr[] = { FATTR4_TYPE, FATTR4_FILEID };
 	req.GetAttr(attr, sizeof(attr) / sizeof(Attribute));
 
 	status_t result = request.Send();
 	if (result != B_OK)
-		return;
+		return result;
 
 	ReplyInterpreter& reply = request.Reply();
 
 	result = reply.PutFH();
 	if (result != B_OK)
-		return;
+		return result;
 
 	AttrValue* values;
 	uint32 count;
 	result = reply.GetAttr(&values, &count);
 	if (result != B_OK || count < 1)
-		return;
+		return result;
 
 	if (fi.fFileId == 0) {
 		if (count < 2 || values[1].fAttribute != FATTR4_FILEID)
-			fFileId = fs->AllocFileId();
+			inode->fFileId = fs->AllocFileId();
 		else
-			fFileId = values[1].fData.fValue64;
+			inode->fFileId = values[1].fData.fValue64;
 	} else
-		fFileId = fi.fFileId;
+		inode->fFileId = fi.fFileId;
 
 	// FATTR4_TYPE is mandatory
-	fType = values[0].fData.fValue32;
+	inode->fType = values[0].fData.fValue32;
 
 	delete[] values;
+
+	*_inode = inode;
+
+	return B_OK;
 }
 
 

src/add-ons/kernel/file_systems/nfs4/Inode.h

@@ -26,7 +26,8 @@ struct OpenFileCookie {
 
 class Inode {
 public:
-								Inode(Filesystem* fs, const FileInfo& fi);
+	static			status_t	CreateInode(Filesystem* fs, const FileInfo& fi,
+									Inode** inode);
 								~Inode();
 
 	inline			ino_t		ID() const;
@@ -47,6 +48,8 @@ public:
 									uint32* count, uint64* cookie);
 
 private:
+								Inode();
+
 					status_t	_ReadDirOnce(DirEntry** dirents, uint32* count,
 									uint64* cookie, bool* eof);
 					status_t	_FillDirEntry(struct dirent* de, ino_t id,

src/add-ons/kernel/file_systems/nfs4/RPCServer.cpp

@@ -150,6 +150,8 @@ Server::SendCallAsync(Call* call, Reply** reply, Request** request)
 	call->SetXID(xid);
 	req->fXID = xid;
 	req->fReply = reply;
+	req->fEvent.Init(&req->fEvent, NULL);
+	req->fDone = false;
 	req->fNext = NULL;
 
 	fRequests.AddRequest(req);
@@ -227,6 +229,7 @@ Server::_Listener()
 		Request* req = fRequests.FindRequest(reply->GetXID());
 		if (req != NULL) {
 			*req->fReply = reply;
+			req->fDone = true;
 			req->fEvent.NotifyAll();
 		} else
 			delete reply;

src/add-ons/kernel/file_systems/nfs4/RPCServer.h

@@ -22,6 +22,7 @@ namespace RPC {
 struct Request {
 	uint32				fXID;
 	ConditionVariable	fEvent;
+	bool				fDone;
 	Reply**				fReply;
 
 	Request*			fNext;
@@ -86,6 +87,8 @@ private:
 inline status_t
 Server::WaitCall(Request* request, bigtime_t time)
 {
+	if (request->fDone)
+		return B_OK;
 	return request->fEvent.Wait(B_RELATIVE_TIMEOUT, time);
 }
 

src/add-ons/kernel/file_systems/nfs4/Request.cpp

@@ -35,10 +35,15 @@ Request::_SendUDP()
 	result = fServer->WaitCall(rpc);
 	if (result != B_OK) {
 		int attempts = 1;
-		while (result != B_OK && attempts++ < kRetryLimit)
+		while (result != B_OK && attempts++ < kRetryLimit) {
 			result = fServer->ResendCallAsync(fBuilder.Request(), rpc);
+			if (result != B_OK)
+				return result;
 
-		if (attempts == kRetryLimit) {
+			result = fServer->WaitCall(rpc);
+		}
+
+		if (result != B_OK) {
 			fServer->CancelCall(rpc);
 			delete rpc;
 			return result;

src/add-ons/kernel/file_systems/nfs4/kernel_interface.cpp

@@ -50,6 +50,12 @@ nfs4_mount(fs_volume* volume, const char* device, uint32 flags,
 	}
 
 	Inode* inode = fs->CreateRootInode();
+	if (inode == NULL) {
+		delete fs;
+		gRPCServerManager->Release(server);
+
+		return B_IO_ERROR;
+	}
 
 	volume->private_volume = fs;
 	volume->ops = &gNFSv4VolumeOps;