Implemented the most basic functionality required to cleanly mount and unmount

(at least in userlandfs).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34069 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/file_systems/packagefs/Directory.cpp

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "Directory.h"
+
+
+Directory::Directory(ino_t id)
+	:
+	Node(id)
+{
+}
+
+Directory::~Directory()
+{
+}

src/add-ons/kernel/file_systems/packagefs/Directory.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef DIRECTORY_H
+#define DIRECTORY_H
+
+
+#include "Node.h"
+
+
+class Directory : public Node {
+public:
+								Directory(ino_t id);
+	virtual						~Directory();
+};
+
+
+#endif	// DIRECTORY_H

src/add-ons/kernel/file_systems/packagefs/Jamfile

@@ -1,10 +1,20 @@
 SubDir HAIKU_TOP src add-ons kernel file_systems packagefs ;
 
 
-KernelAddon packagefs
-	:
-	kernel_interface.cpp
+UsePrivateHeaders shared ;
 
+
+HAIKU_PACKAGE_FS_SOURCES =
+	DebugSupport.cpp
+	Directory.cpp
+	kernel_interface.cpp
+	Node.cpp
+	Volume.cpp
+;
+
+
+KernelAddon packagefs
+	: $(HAIKU_PACKAGE_FS_SOURCES)
 	: $(HAIKU_STATIC_LIBSUPC++)
 ;
 

src/add-ons/kernel/file_systems/packagefs/Node.cpp

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "Node.h"
+
+
+Node::Node(ino_t id)
+	:
+	fID(id)
+{
+}
+
+
+Node::~Node()
+{
+}

src/add-ons/kernel/file_systems/packagefs/Node.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef NODE_H
+#define NODE_H
+
+
+#include <fs_interface.h>
+
+
+class Node {
+public:
+								Node(ino_t id);
+	virtual						~Node();
+
+			ino_t				ID() const	{ return fID; }
+
+private:
+			ino_t				fID;
+};
+
+
+#endif	// NODE_H

src/add-ons/kernel/file_systems/packagefs/Volume.cpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "Volume.h"
+
+#include <new>
+
+#include "Directory.h"
+#include "kernel_interface.h"
+
+
+// node ID of the root directory
+static const ino_t kRootDirectoryID = 1;
+
+
+Volume::Volume(fs_volume* fsVolume)
+	:
+	fFSVolume(fsVolume),
+	fRootDirectory(NULL)
+{
+}
+
+
+Volume::~Volume()
+{
+	delete fRootDirectory;
+}
+
+
+status_t
+Volume::Mount()
+{
+	// create the root node
+	fRootDirectory = new(std::nothrow) Directory(kRootDirectoryID);
+	if (fRootDirectory == NULL)
+		return B_NO_MEMORY;
+
+	// publish it
+	status_t error = publish_vnode(fFSVolume, fRootDirectory->ID(),
+		fRootDirectory, &gPackageFSVnodeOps, S_IFDIR, 0);
+	if (error != B_OK)
+		return error;
+
+	return B_OK;
+}
+
+
+void
+Volume::Unmount()
+{
+}

src/add-ons/kernel/file_systems/packagefs/Volume.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef VOLUME_H
+#define VOLUME_H
+
+
+#include <fs_interface.h>
+
+
+class Directory;
+
+
+class Volume {
+public:
+								Volume(fs_volume* fsVolume);
+								~Volume();
+
+			status_t			Mount();
+			void				Unmount();
+
+			Directory*			RootDirectory() const { return fRootDirectory; }
+
+private:
+			fs_volume*			fFSVolume;
+			Directory*			fRootDirectory;
+};
+
+
+#endif	// VOLUME_H

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

@@ -4,39 +4,78 @@
  */
 
 
+#include "kernel_interface.h"
+
 #include <new>
 
 #include <fs_info.h>
 #include <fs_interface.h>
 #include <KernelExport.h>
 
+#include <AutoDeleter.h>
 
-extern fs_volume_ops gPackageFSVolumeOps;
-extern fs_vnode_ops gPackageFSVnodeOps;
+#include "DebugSupport.h"
+#include "Directory.h"
+#include "Volume.h"
+
+
+static const uint32 kOptimalIOSize = 64 * 1024;
 
 
 //	#pragma mark - Volume
 
 
 static status_t
-packagefs_mount(fs_volume* _volume, const char* device, uint32 flags,
-	const char* parameters, ino_t* rootID)
+packagefs_mount(fs_volume* fsVolume, const char* device, uint32 flags,
+	const char* parameters, ino_t* _rootID)
 {
-	return B_UNSUPPORTED;
+	FUNCTION("fsVolume: %p, device: \"%s\", flags: %#lx, parameters: \"%s\"\n",
+		fsVolume, device, flags, parameters);
+
+	// create a Volume object
+	Volume* volume = new(std::nothrow) Volume(fsVolume);
+	if (volume == NULL)
+		RETURN_ERROR(B_NO_MEMORY);
+	ObjectDeleter<Volume> volumeDeleter(volume);
+
+	status_t error = volume->Mount();
+	if (error != B_OK)
+		return error;
+
+	// set return values
+	*_rootID = volume->RootDirectory()->ID();
+	fsVolume->private_volume = volumeDeleter.Detach();
+	fsVolume->ops = &gPackageFSVolumeOps;
+
+	return B_OK;
 }
 
 
 static status_t
-packagefs_unmount(fs_volume* fs)
+packagefs_unmount(fs_volume* fsVolume)
 {
-	return B_UNSUPPORTED;
+	Volume* volume = (Volume*)fsVolume->private_volume;
+
+	FUNCTION("volume: %p\n", volume);
+
+	volume->Unmount();
+	delete volume;
+
+	return B_OK;
 }
 
 
 static status_t
-packagefs_read_fs_info(fs_volume* fs, struct fs_info* info)
+packagefs_read_fs_info(fs_volume* fsVolume, struct fs_info* info)
 {
-	return B_UNSUPPORTED;
+	FUNCTION("volume: %p, info: %p\n", fsVolume->private_volume, info);
+
+	info->flags = B_FS_IS_READONLY;
+	info->block_size = 4096;
+	info->io_size = kOptimalIOSize;
+	info->total_blocks = info->free_blocks = 1;
+	strlcpy(info->volume_name, "Package FS", sizeof(info->volume_name));
+	return B_OK;
 }
 
 
@@ -44,17 +83,27 @@ packagefs_read_fs_info(fs_volume* fs, struct fs_info* info)
 
 
 static status_t
-packagefs_lookup(fs_volume* fs, fs_vnode* _dir, const char* entryName,
-	ino_t* vnid)
+packagefs_lookup(fs_volume* fsVolume, fs_vnode* fsDir, const char* entryName,
+	ino_t* _vnid)
 {
+	Volume* volume = (Volume*)fsVolume->private_volume;
+	Node* dir = (Node*)fsDir->private_node;
+
+	FUNCTION("volume: %p, dir: %p (%lld), entry: \"%s\"\n", volume, dir,
+		dir->ID(), entryName);
+
 	return B_UNSUPPORTED;
 }
 
 
 static status_t
-packagefs_get_vnode(fs_volume* fs, ino_t vnid, fs_vnode* node, int* _type,
-	uint32* _flags, bool reenter)
+packagefs_get_vnode(fs_volume* fsVolume, ino_t vnid, fs_vnode* fsNode,
+	int* _type, uint32* _flags, bool reenter)
 {
+	Volume* volume = (Volume*)fsVolume->private_volume;
+
+	FUNCTION("volume: %p, vnid: %lld\n", volume, vnid);
+
 	return B_UNSUPPORTED;
 }
 
@@ -85,9 +134,26 @@ packagefs_access(fs_volume* fs, fs_vnode* _node, int mode)
 
 
 static status_t
-packagefs_read_stat(fs_volume* fs, fs_vnode* _node, struct stat* st)
+packagefs_read_stat(fs_volume* fsVolume, fs_vnode* fsNode, struct stat* st)
 {
-	return B_UNSUPPORTED;
+	Volume* volume = (Volume*)fsVolume->private_volume;
+	Node* node = (Node*)fsNode->private_node;
+
+	FUNCTION("volume: %p, node: %p (%lld)\n", volume, node, node->ID());
+
+// TODO: Fill in correctly!
+	st->st_mode = S_IFDIR;
+	st->st_nlink = 1;
+	st->st_uid = 0;
+	st->st_gid = 0;
+	st->st_size = 0;
+	st->st_blksize = kOptimalIOSize;
+	st->st_atime = 0;
+	st->st_mtime = 0;
+	st->st_ctime = 0;
+	st->st_crtime = 0;
+
+	return B_OK;
 }
 
 
@@ -170,9 +236,13 @@ packagefs_std_ops(int32 op, ...)
 {
 	switch (op) {
 		case B_MODULE_INIT:
+			init_debugging();
+			PRINT("package_std_ops(): B_MODULE_INIT\n");
 			return B_OK;
 
 		case B_MODULE_UNINIT:
+			PRINT("package_std_ops(): B_MODULE_UNINIT\n");
+			exit_debugging();
 			return B_OK;
 
 		default:

src/add-ons/kernel/file_systems/packagefs/kernel_interface.h

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef KERNEL_INTERFACE_H
+#define KERNEL_INTERFACE_H
+
+
+#include <fs_interface.h>
+
+
+extern fs_volume_ops gPackageFSVolumeOps;
+extern fs_vnode_ops gPackageFSVnodeOps;
+
+
+#endif	// KERNEL_INTERFACE_H

src/add-ons/kernel/file_systems/packagefs/userland/Jamfile

@@ -4,9 +4,10 @@ SubDir HAIKU_TOP src add-ons kernel file_systems packagefs userland ;
 SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) ] ;
 
 
-Addon <userland>packagefs
-	:
-	kernel_interface.cpp
+UsePrivateHeaders shared ;
 
+
+Addon <userland>packagefs
+	: $(HAIKU_PACKAGE_FS_SOURCES)
 	: libuserlandfs_haiku_kernel.so $(TARGET_LIBSUPC++)
 ;