nfs4: Add create_dir() hook

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

@@ -336,7 +336,7 @@ Inode::CreateLink(const char* name, const char* path, int mode)
 		attr.fAttribute = FATTR4_MODE;
 		attr.fFreePointer = false;
 		attr.fData.fValue32 = mode;
-		req.Create(NF4LNK, name, path, &attr, 1);
+		req.Create(NF4LNK, name, &attr, 1, path);
 
 		status_t result = request.Send();
 		if (result != B_OK)
@@ -919,6 +919,38 @@ Inode::Write(OpenFileCookie* cookie, off_t pos, const void* _buffer,
 }
 
 
+status_t
+Inode::CreateDir(const char* name, int mode)
+{
+	do {
+		RPC::Server* serv = fFilesystem->Server();
+		Request request(serv);
+		RequestBuilder& req = request.Builder();
+
+		req.PutFH(fHandle);
+
+		AttrValue attr;
+		attr.fAttribute = FATTR4_MODE;
+		attr.fFreePointer = false;
+		attr.fData.fValue32 = mode;
+		req.Create(NF4DIR, name, &attr, 1);
+
+		status_t result = request.Send();
+		if (result != B_OK)
+			return result;
+
+		ReplyInterpreter& reply = request.Reply();
+
+		if (_HandleErrors(reply.NFS4Error(), serv))
+			continue;
+
+		reply.PutFH();
+
+		return reply.Create();
+	} while (true);
+}
+
+
 status_t
 Inode::OpenDir(OpenDirCookie* cookie)
 {

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

@@ -52,6 +52,7 @@ public:
 					status_t	Write(OpenFileCookie* cookie, off_t pos,
 									const void* buffer, size_t *_length);
 
+					status_t	CreateDir(const char* name, int mode);
 					status_t	OpenDir(OpenDirCookie* cookie);
 					status_t	ReadDir(void* buffer, uint32 size,
 									uint32* count, OpenDirCookie* cookie);

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

@@ -87,23 +87,24 @@ RequestBuilder::Close(uint32 seq, const uint32* id, uint32 stateSeq)
 
 
 status_t
-RequestBuilder::Create(FileType type, const char* name, const char* path,
-	AttrValue* attr, uint32 count)
+RequestBuilder::Create(FileType type, const char* name, AttrValue* attr,
+	uint32 count, const char* path)
 {
 	if (fProcedure != ProcCompound)
 		return B_BAD_VALUE;
 	if (fRequest == NULL)
 		return B_NO_MEMORY;
-	if (path == NULL)
+	if (type == NF4LNK && path == NULL)
 		return B_BAD_VALUE;
 	if (name == NULL)
 		return B_BAD_VALUE;
-	if (type != NF4LNK)
+	if (type == NF4BLK || type == NF4CHR)
 		return B_BAD_VALUE;
 
 	fRequest->Stream().AddUInt(OpCreate);
 	fRequest->Stream().AddUInt(type);
-	fRequest->Stream().AddString(path);
+	if (type == NF4LNK)
+		fRequest->Stream().AddString(path);
 	fRequest->Stream().AddString(name);
 	_EncodeAttrs(fRequest->Stream(), attr, count);
 

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

@@ -29,8 +29,8 @@ public:
 			status_t				Close(uint32 seq, const uint32* id,
 										uint32 stateSeq);
 			status_t				Create(FileType type, const char* name,
-										const char* path, AttrValue* attr,
-										uint32 count);
+										AttrValue* attr, uint32 count,
+										const char* path = NULL);
 			status_t				GetAttr(Attribute* attrs, uint32 count);
 			status_t				GetFH();
 			status_t				Link(const char* name);

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

@@ -376,6 +376,15 @@ nfs4_write(fs_volume* volume, fs_vnode* vnode, void* _cookie, off_t pos,
 }
 
 
+static status_t
+nfs4_create_dir(fs_volume* volume, fs_vnode* parent, const char* name,
+	int mode)
+{
+	Inode* inode = reinterpret_cast<Inode*>(parent->private_node);
+	return inode->CreateDir(name, mode);
+}
+
+
 static status_t
 nfs4_remove_dir(fs_volume* volume, fs_vnode* parent, const char* name)
 {
@@ -526,7 +535,7 @@ fs_vnode_ops gNFSv4VnodeOps = {
 	nfs4_write,
 
 	/* directory operations */
-	NULL,	// create_dir()
+	nfs4_create_dir,
 	nfs4_remove_dir,
 	nfs4_open_dir,
 	nfs4_close_dir,