added implementation of low level functions open, close and read

src/app/main.c

@@ -139,7 +139,7 @@ int main(int argc, char * argv[])
 			wsfs_server_start(server);
 			struct wsfs_jsonrpc * const rpc = wsfs_server_get_jsonrpc_service(server);
 
-			result = wsfs_operations_loop(args.mount_point, rpc);
+			result = wsfs_operations_loop_ll(args.mount_point, rpc);
 			wsfs_server_dispose(server);			
 		}
 		else

src/wsfs/operation/ll_close.c

@@ -1,14 +1,30 @@
 #include "wsfs/operations.h"
+
+#include <limits.h>
 #include <errno.h>
+#include <jansson.h>
+
+#include "wsfs/jsonrpc.h"
 #include "wsfs/util.h"
 
-#include <stdio.h>
 
 void wsfs_operation_ll_close(
 	fuse_req_t request,
-	fuse_ino_t WSFS_UNUSED_PARAM(inode),
+	fuse_ino_t inode,
-	struct fuse_file_info * WSFS_UNUSED_PARAM(file_info))
+	struct fuse_file_info * file_info)
 {
-    puts("close");
+    struct wsfs_operations_context * user_data = fuse_req_userdata(request);
-	fuse_reply_err(request, ENOENT);
+    struct wsfs_jsonrpc * rpc = user_data->rpc;
+
+	json_t * result = NULL;
+	int handle = (int) (file_info->fh & INT_MAX);
+	wsfs_status const status = wsfs_jsonrpc_invoke(rpc, &result, "close", "iii", inode, handle, file_info->flags);
+	if (NULL != result)
+	{
+		// unused
+		json_decref(result);
+	}
+
+
+	fuse_reply_err(request, (WSFS_GOOD == status) ? 0 : ENOENT);
 }

src/wsfs/operation/ll_open.c

@@ -1,14 +1,42 @@
 #include "wsfs/operations.h"
+
 #include <errno.h>
-#include "wsfs/util.h"
+#include <jansson.h>
 
-#include <stdio.h>
+#include "wsfs/jsonrpc.h"
+#include "wsfs/util.h"
 
 void wsfs_operation_ll_open(
 	fuse_req_t request,
-	fuse_ino_t WSFS_UNUSED_PARAM(inode),
+	fuse_ino_t inode,
-	struct fuse_file_info * WSFS_UNUSED_PARAM(file_info))
+	struct fuse_file_info * file_info)
 {
-    puts("open");
+    struct wsfs_operations_context * user_data = fuse_req_userdata(request);
+    struct wsfs_jsonrpc * rpc = user_data->rpc;
+
+	json_t * result = NULL;
+	wsfs_status status = wsfs_jsonrpc_invoke(rpc, &result, "open", "ii", inode, file_info->flags);
+	if (NULL != result)
+	{
+        json_t * handle_holder = json_object_get(result, "handle");
+        if ((NULL != handle_holder) && (json_is_integer(handle_holder))) 
+        {
+            file_info->fh = json_integer_value(handle_holder);
+        }
+        else
+        {
+            status = WSFS_BAD_FORMAT;
+        }        
+
+		json_decref(result);
+	}
+
+	if (WSFS_GOOD == status)
+	{
+		fuse_reply_open(request, file_info);		
+	}
+	else
+	{
 		fuse_reply_err(request, ENOENT);
+	}
 }

src/wsfs/operation/ll_read.c

@@ -1,16 +1,87 @@
 #include "wsfs/operations.h"
+
 #include <errno.h>
-#include "wsfs/util.h"
+#include <string.h>
+#include <limits.h>
+#include <jansson.h>
+
+#include "wsfs/jsonrpc.h"
 
-#include <stdio.h>
+#define WSFS_MAX_READ_LENGTH 4096
+
+static wsfs_status wsfs_fill_buffer(
+	char * buffer,
+	size_t buffer_size,
+	char const * format,
+	char const * data,
+	size_t count)
+{
+	wsfs_status status = WSFS_GOOD;
+
+	size_t const copy_count = (buffer_size < count) ? buffer_size : count;
+	if (0 < copy_count)
+	{
+		if (0 == strcmp("identity", format))
+		{
+			memcpy(buffer, data, copy_count);
+		}
+		else
+		{
+			status = WSFS_BAD;
+		}
+	}
+
+	return status;
+}
 
 void wsfs_operation_ll_read(
 	fuse_req_t request,
-	fuse_ino_t WSFS_UNUSED_PARAM(inode),
+	fuse_ino_t inode,
-    size_t WSFS_UNUSED_PARAM(size),
+    size_t size,
-    off_t WSFS_UNUSED_PARAM(offset),
+    off_t offset,
-	struct fuse_file_info * WSFS_UNUSED_PARAM(file_info))
+	struct fuse_file_info * file_info)
 {
-    puts("read");
+    struct wsfs_operations_context * user_data = fuse_req_userdata(request);
+    struct wsfs_jsonrpc * rpc = user_data->rpc;
+
+	int const length = (size <= WSFS_MAX_READ_LENGTH) ? (int) size : WSFS_MAX_READ_LENGTH;
+	char * buffer = malloc(length);
+	size_t count = 0;
+	json_t * data = NULL;
+    int handle = (file_info->fh & INT_MAX);
+	wsfs_status status = wsfs_jsonrpc_invoke(rpc, &data, "read", "iiii", inode, handle, (int) offset, length);
+	if (NULL != data)
+	{
+		json_t * data_holder = json_object_get(data, "data");
+		json_t * format_holder = json_object_get(data, "format");
+		json_t * count_holder = json_object_get(data, "count");
+
+		if ((NULL != data_holder) && (json_is_string(data_holder)) &&
+             	    (NULL != format_holder) && (json_is_string(format_holder)) &&
+             	    (NULL != count_holder) && (json_is_integer(count_holder)))
+		{
+			char const * const data = json_string_value(data_holder);
+			char const * const format = json_string_value(format_holder);
+			count = (size_t) json_integer_value(count_holder);
+
+			status = wsfs_fill_buffer(buffer, length, format, data, count);
+		}
+		else
+		{
+			status = WSFS_BAD_FORMAT;
+		}
+
+		json_decref(data);
+	}
+
+	if (WSFS_GOOD == status)
+	{
+		fuse_reply_buf(request, buffer, count);
+	}
+	else
+	{
    		fuse_reply_err(request, ENOENT);
+	}
+	
+    free(buffer);
 }