added implementation of low level functions lookup and readdir

src/app/www/js/filesystem.js

@@ -57,6 +57,26 @@ class FileSystem {
         }
     }
 
+    lookup(parent, name) {
+        const parentEntry = this._getEntry(parent);
+        const entry = (parentEntry && parentEntry.entries && parentEntry.entries[name]) || null;
+        if (entry) {
+			return {
+                inode: entry.inode,
+				mode: entry.mode || parseInt("755", 8),
+				type: entry.type || 'file',
+				size: entry.size || (entry.contents && entry.contents.length) || 0,
+				atime: entry.atime || 0,
+				mtime: entry.mtime || 0,
+				ctime: entry.ctime || 0
+			};
+        }
+        else {
+            return FileSystem.BAD_NOENTRY;
+        }
+    }
+
+
     getattr(path) {
         let entry = this._getEntry(path);
         if (entry) {
@@ -79,9 +99,14 @@ class FileSystem {
         let entry = this._getEntry(path);
 
         if ((entry) && ("dir" === entry.type)) {
-            result = [".", ".."];
+            result = [
-            for(let subdir of Object.keys(entry.entries)) {
+                {name: '.', inode: entry.inode},
-                result.push(subdir);                
+                {name: '..', inode: 0}
+            ];
+            for(let subdir of Object.entries(entry.entries)) {
+                const name = subdir[0];
+                const inode = subdir[1].inode;
+                result.push({name: name, inode: inode});               
             }
         }
 

src/app/www/js/filesystem_handler.js

@@ -22,6 +22,13 @@ class FileSystemHandler {
                             (request.params)) {
                 switch(request.method)
                 {
+                    case "lookup":
+                    {
+                        const parent = request.params[0];
+                        const name = request.params[1];
+                        result = this._fs.lookup(parent, name);
+                    }
+                    break;
                     case "getattr":
                     {
                         const path = request.params[0];

src/wsfs/operation/ll_getattr.c

@@ -1,9 +1,7 @@
 #include "wsfs/operations.h"
 
-
 #include <errno.h>
 #include <string.h>
-#include <stdio.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -17,8 +15,6 @@ extern void wsfs_operation_ll_getattr (
 	fuse_ino_t inode,
 	struct fuse_file_info * WSFS_UNUSED_PARAM(file_info))
 {
-    printf("getattr: inode=%lu\n", inode);
-
     struct fuse_ctx const * context = fuse_req_ctx(request);
     struct wsfs_operations_context * user_data = fuse_req_userdata(request);
     struct wsfs_jsonrpc * rpc = user_data->rpc;

src/wsfs/operation/ll_lookup.c

@@ -1,15 +1,75 @@
 #include "wsfs/operations.h"
-#include <errno.h>
-#include "wsfs/util.h"
 
-#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h> 
+
+#include "wsfs/jsonrpc.h"
+#include "wsfs/util.h"
 
 void wsfs_operation_ll_lookup (
 	fuse_req_t request, 
 	fuse_ino_t parent, 
 	char const * name)
 {
+    struct fuse_ctx const * context = fuse_req_ctx(request);
+    struct wsfs_operations_context * user_data = fuse_req_userdata(request);
+    struct wsfs_jsonrpc * rpc = user_data->rpc;
 
-    printf("lookup: inode=%lu, name=%s\n", parent, name);
+    struct fuse_entry_param buffer;
+	json_t * data = NULL;
+	wsfs_status status = wsfs_jsonrpc_invoke(rpc, &data, "lookup", "is", parent, name);
+	if (NULL != data)
+	{
+		json_t * inode_holder = json_object_get(data, "inode"); 
+		json_t * mode_holder = json_object_get(data, "mode");
+		json_t * type_holder = json_object_get(data, "type");
+		if ((NULL != inode_holder) && (json_is_integer(inode_holder)) &&
+			(NULL != mode_holder) && (json_is_integer(mode_holder)) && 
+		    (NULL != type_holder) && (json_is_string(type_holder)))
+		{
+            memset(&buffer, 0, sizeof(struct stat));
+
+			buffer.ino = json_integer_value(inode_holder);
+			buffer.attr.st_mode = json_integer_value(mode_holder) & 0555;
+			char const * type = json_string_value(type_holder);
+			if (0 == strcmp("file", type)) 
+			{
+				buffer.attr.st_mode |= S_IFREG;
+			}
+			else if (0 == strcmp("dir", type))
+			{
+				buffer.attr.st_mode |= S_IFDIR;
+			}
+
+
+			buffer.attr_timeout = user_data->timeout;
+			buffer.entry_timeout = user_data->timeout;
+            buffer.attr.st_uid = context->uid;
+            buffer.attr.st_gid = context->gid;
+            buffer.attr.st_nlink = 1;
+			buffer.attr.st_size = wsfs_json_get_int(data, "size", 0);
+			buffer.attr.st_atime = wsfs_json_get_int(data, "atime", 0);
+			buffer.attr.st_mtime = wsfs_json_get_int(data, "mtime", 0);
+			buffer.attr.st_ctime = wsfs_json_get_int(data, "ctime", 0);
+		}
+		else
+		{
+	        status = WSFS_BAD_FORMAT;
+		}
+
+		json_decref(data);
+	}
+
+    if (WSFS_GOOD == status)
+    {
+        fuse_reply_entry(request, &buffer);
+    }
+    else
+    {
 	    fuse_reply_err(request, ENOENT);
+    }
 }

src/wsfs/operation/ll_readdir.c

@@ -1,16 +1,129 @@
 #include "wsfs/operations.h"
+
+#include <stdlib.h>
+#include <string.h>
 #include <errno.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h> 
+
+#include "wsfs/jsonrpc.h"
 #include "wsfs/util.h"
 
-#include <stdio.h>
+
+#define WSFS_DIRBUFFER_INITIAL_SIZE 1024
+
+struct wsfs_dirbuffer
+{
+	char * data;
+	size_t position;
+	size_t capacity;
+};
+
+static void wsfs_dirbuffer_init(
+	struct wsfs_dirbuffer * buffer)
+{
+	buffer->data = malloc(WSFS_DIRBUFFER_INITIAL_SIZE);
+	buffer->position = 0;
+	buffer->capacity = WSFS_DIRBUFFER_INITIAL_SIZE;
+}
+
+static void wsfs_dirbuffer_dispose(
+	struct wsfs_dirbuffer * buffer)
+{
+	free(buffer->data);
+}
+
+static void wsfs_dirbuffer_add(
+	fuse_req_t request,
+	struct wsfs_dirbuffer * buffer,
+	char const * name,
+	fuse_ino_t inode)
+{
+	size_t const size = fuse_add_direntry(request, NULL, 0, name, NULL, 0);
+	size_t remaining = buffer->capacity - buffer->position;
+	while (remaining < size)
+	{
+		buffer->capacity *= 2;
+		buffer->data = realloc(buffer->data, buffer->capacity);
+		remaining = buffer->capacity - buffer->position;
+	}
+
+	struct stat stat_buffer;
+	memset(&stat_buffer, 0, sizeof(struct stat));
+	stat_buffer.st_ino = inode;
+	fuse_add_direntry(request, 
+		&buffer->data[buffer->position], remaining, name,
+		&stat_buffer, buffer->position + size);
+	buffer->position += size;
+}
+
+static size_t min(size_t a, size_t b)
+{
+	return (a < b) ? a : b;
+}
 
 void wsfs_operation_ll_readdir (
 	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))
 {
-    puts("readdir");
+    struct wsfs_operations_context * user_data = fuse_req_userdata(request);
+    struct wsfs_jsonrpc * rpc = user_data->rpc;
+
+	struct wsfs_dirbuffer buffer;
+	wsfs_dirbuffer_init(&buffer);
+
+	json_t * result = NULL;
+	wsfs_status const status = wsfs_jsonrpc_invoke(rpc, &result, "readdir", "i", inode);
+	if (NULL != result)
+	{
+		if (json_is_array(result)) 
+		{
+			bool buffer_full = false;
+			size_t const count = json_array_size(result);
+			for(size_t i = 0; (!buffer_full) && (i < count); i++)
+			{
+				json_t * entry =json_array_get(result, i);
+				if (json_is_object(entry))
+				{
+					json_t * name_holder = json_object_get(entry, "name");
+					json_t * inode_holder = json_object_get(entry, "inode");
+
+					if ((NULL != name_holder) && (json_is_string(name_holder)) &&
+						(NULL != inode_holder) && (json_is_integer(inode_holder)))
+					{
+						char const * name = json_string_value(name_holder);
+						fuse_ino_t entry_inode = (fuse_ino_t) json_integer_value(inode_holder);
+						wsfs_dirbuffer_add(request, &buffer, name, entry_inode);	
+					}
+				}
+			}
+		}
+
+		json_decref(result);
+	}
+
+	if (WSFS_GOOD == status)
+	{
+		if (((size_t) offset) < buffer.position)
+		{
+			fuse_reply_buf(request, &buffer.data[offset],
+				min(buffer.position - offset, size));
+		}
+		else
+		{
+			fuse_reply_buf(request, NULL, 0);			
+		}
+		
+	}
+	else
+	{
 		fuse_reply_err(request, ENOENT);
+	}
+
+	wsfs_dirbuffer_dispose(&buffer);
 }

src/wsfs/operation/readdir.c

@@ -27,9 +27,13 @@ int wsfs_operation_readdir(
 			for(size_t i = 0; (!buffer_full) && (i < count); i++)
 			{
 				json_t * entry =json_array_get(result, i);
-				if (json_is_string(entry))
+				if (json_is_object(entry))
 				{
-					buffer_full = filler(buffer, json_string_value(entry), NULL, 0, 0);
+					json_t * name_holder = json_object_get(entry, "name");
+					if ((NULL != name_holder) && (json_is_string(name_holder))) 
+					{
+						buffer_full = filler(buffer, json_string_value(name_holder), NULL, 0, 0);
+					}
 				}
 			}
 		}