From df76b24fed5ac3b5af406aad3df277d7f4c347e5 Mon Sep 17 00:00:00 2001
From: Alexis211 <alexis211@gmail.com>
Date: Mon, 31 Aug 2009 21:44:26 +0200
Subject: Now we can read frop floppy drives !!! Next : FAT driver.

---
 Source/Kernel/VFS/.Part.ns.cpp.swp    | Bin 0 -> 12288 bytes
 Source/Kernel/VFS/Part.ns.cpp         |  59 ++++++++++++++++++++++++++++++++++
 Source/Kernel/VFS/Part.ns.h           |  18 +++++++++++
 Source/Kernel/VFS/Partition.class.cpp |  25 ++++++++++++++
 Source/Kernel/VFS/Partition.class.h   |  28 ++++++++++++++++
 5 files changed, 130 insertions(+)
 create mode 100644 Source/Kernel/VFS/.Part.ns.cpp.swp
 create mode 100644 Source/Kernel/VFS/Part.ns.cpp
 create mode 100644 Source/Kernel/VFS/Part.ns.h
 create mode 100644 Source/Kernel/VFS/Partition.class.cpp
 create mode 100644 Source/Kernel/VFS/Partition.class.h

(limited to 'Source/Kernel/VFS')

diff --git a/Source/Kernel/VFS/.Part.ns.cpp.swp b/Source/Kernel/VFS/.Part.ns.cpp.swp
new file mode 100644
index 0000000..3b639ab
Binary files /dev/null and b/Source/Kernel/VFS/.Part.ns.cpp.swp differ
diff --git a/Source/Kernel/VFS/Part.ns.cpp b/Source/Kernel/VFS/Part.ns.cpp
new file mode 100644
index 0000000..6408dbd
--- /dev/null
+++ b/Source/Kernel/VFS/Part.ns.cpp
@@ -0,0 +1,59 @@
+#include "Part.ns.h"
+
+namespace Part {
+
+Vector<BlockDevice*> devices;
+Vector<Partition*> partitions;
+
+void readPartitionTable(BlockDevice *dev) {	//TODO : read partition table from device
+	partitions.push(new Partition(dev, 0, 0, dev->blocks()));	//Insert whole device as a partition
+}
+
+void registerDevice(BlockDevice *dev) {
+	unregisterDevice(dev);
+
+	asm volatile("cli");
+
+	readPartitionTable(dev);
+
+	bool inserted = false;
+	for (u32int i = 0; i < devices.size(); i++) {
+		if (devices[i] == 0) {
+			devices[i] = dev;
+			inserted = true;
+			break;
+		}
+	}
+	if (!inserted) devices.push(dev);
+
+	asm volatile("sti");
+}
+
+void unregisterDevice(BlockDevice *dev) {
+	asm volatile("cli");
+	//Unregister && delete partitions
+	for (u32int i = 0; i < partitions.size(); i++) {
+		if (partitions[i]->getDevice() == dev) {
+			delete partitions[i];
+			partitions[i] = partitions.back();
+			partitions.pop();
+			i--;
+		}
+	}
+	//Unregister device
+	for (u32int i = 0; i < devices.size(); i++) {
+		if (devices[i] == dev) devices[i] = 0;
+	}
+	if (!devices.empty() && devices.back() == 0) devices.pop();
+
+	asm volatile("sti");
+}
+
+u32int getDeviceID(BlockDevice* dev) {
+	for (u32int i = 0; i < devices.size(); i++) {
+		if (devices[i] == dev) return i;
+	}
+	return (u32int) - 1;
+}
+
+}
diff --git a/Source/Kernel/VFS/Part.ns.h b/Source/Kernel/VFS/Part.ns.h
new file mode 100644
index 0000000..07a45f9
--- /dev/null
+++ b/Source/Kernel/VFS/Part.ns.h
@@ -0,0 +1,18 @@
+#ifndef DEF_PART_NS_H
+#define DEF_PART_NS_H
+
+#include <Devices/BlockDevice.proto.h>
+#include <Library/Vector.class.h>
+#include <VFS/Partition.class.h>
+
+namespace Part {
+	extern Vector<BlockDevice*> devices;
+	extern Vector<Partition*> partitions;
+
+	void registerDevice(BlockDevice* dev);
+	void unregisterDevice(BlockDevice* dev);
+
+	u32int getDeviceID(BlockDevice* dev);
+}
+
+#endif
diff --git a/Source/Kernel/VFS/Partition.class.cpp b/Source/Kernel/VFS/Partition.class.cpp
new file mode 100644
index 0000000..0c7832b
--- /dev/null
+++ b/Source/Kernel/VFS/Partition.class.cpp
@@ -0,0 +1,25 @@
+#include "Partition.class.h"
+
+Partition::Partition(BlockDevice* dev, u8int partnumber, u64int startblock, u64int blockcount) {
+	m_device = dev;
+	m_partnumber = partnumber;
+	m_startblock = startblock;
+	m_blockcount = blockcount;
+}
+
+bool Partition::readBlocks(u64int startblock, u32int count, u8int *data) {
+	if (startblock + count > m_startblock + m_blockcount) return false;
+	return m_device->readBlocks(startblock - m_startblock, count, data);
+}
+
+bool Partition::writeBlocks(u64int startblock, u32int count, u8int *data) {
+	if (startblock + count > m_startblock + m_blockcount) return false;
+	return m_device->writeBlocks(startblock - m_startblock, count, data);
+}
+
+//Accessors
+BlockDevice* Partition::getDevice() { return m_device; }
+u64int Partition::getStartBlock() { return m_startblock; }
+u64int Partition::getBlockCount() { return m_blockcount; }
+u8int Partition::getPartNumber() { return m_partnumber; }
+u32int Partition::getBlockSize() { return m_device->blockSize(); }
diff --git a/Source/Kernel/VFS/Partition.class.h b/Source/Kernel/VFS/Partition.class.h
new file mode 100644
index 0000000..e9087bf
--- /dev/null
+++ b/Source/Kernel/VFS/Partition.class.h
@@ -0,0 +1,28 @@
+#ifndef DEF_PARTITION_CLASS_H
+#define DEF_PARTITION_CLASS_H
+
+#include <Devices/BlockDevice.proto.h>
+
+class Partition {
+	private:
+	BlockDevice* m_device;
+	u64int m_startblock, m_blockcount;
+	u8int m_partnumber;	//Partition number in partition table of device
+
+	public:
+	Partition(BlockDevice* dev, u8int partnumber, u64int startblock, u64int blockcount);
+
+	bool readBlocks(u64int startblock, u32int count, u8int *data);
+	bool writeBlocks(u64int startblock, u32int count, u8int *data);
+
+	//Accessors :
+	BlockDevice* getDevice();
+	u64int getStartBlock();
+	u64int getBlockCount();
+	u8int getPartNumber();
+	u32int getBlockSize();
+	inline u64int blocks() { return getBlockCount(); }
+};
+
+#endif
+
-- 
cgit v1.2.3