* Made {Publish,Unpublish}Device() virtual and implemented them in

KPartition and as no-ops in KDiskDevice.
* Prefixed partition names with "obos_" to not interfere with R5's
  partition names.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3509 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/disk_device_manager/KDiskDevice.h

@@ -41,6 +41,9 @@ public:
 
 	virtual void SetID(partition_id id);
 
+	virtual status_t PublishDevice();
+	virtual status_t UnpublishDevice();
+
 	void SetDeviceFlags(uint32 flags);	// comprises the ones below
 	uint32 DeviceFlags() const;
 	bool IsRemovable() const;

headers/private/kernel/disk_device_manager/KPartition.h

@@ -37,8 +37,8 @@ public:
 	int32 CountReferences() const;
 
 	status_t Open(int flags, int *fd);
-	status_t PublishDevice();
-	status_t UnpublishDevice();
+	virtual status_t PublishDevice();
+	virtual status_t UnpublishDevice();
 
 	void SetBusy(bool busy);
 	bool IsBusy() const;

src/kernel/core/disk_device_manager/KDiskDevice.cpp

@@ -125,6 +125,25 @@ KDiskDevice::SetID(partition_id id)
 	fDeviceData.id = id;
 }
 
+// PublishDevice
+status_t
+KDiskDevice::PublishDevice()
+{
+	// PublishDevice() and UnpublishDevice() are no-ops for KDiskDevices,
+	// since they are always published.
+	return B_OK;
+}
+
+// UnpublishDevice
+status_t
+KDiskDevice::UnpublishDevice()
+{
+	// PublishDevice() and UnpublishDevice() are no-ops for KDiskDevices,
+	// since they are always published.
+	return B_OK;
+}
+
+
 // SetDeviceFlags
 void
 KDiskDevice::SetDeviceFlags(uint32 flags)

src/kernel/core/disk_device_manager/KPartition.cpp

@@ -5,7 +5,9 @@
 #include <new>
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
+#include <Drivers.h>
 #include <Errors.h>
 
 //#include <Partition.h>
@@ -103,16 +105,46 @@ KPartition::Open(int flags, int *fd)
 status_t
 KPartition::PublishDevice()
 {
-	// not implemented
-	return B_ERROR;
+	// prepare a partition_info
+	partition_info info;
+	info.offset = Offset();
+	info.size = Size();
+	info.logical_block_size = BlockSize();
+	info.session = 0;
+	info.partition = ID();
+	if (strlen(Device()->Path()) >= 256)
+		return B_NAME_TOO_LONG;
+	strcpy(info.device, Device()->Path());
+	// get the entry path
+	char path[B_PATH_NAME_LENGTH];
+	status_t error = GetPath(path);
+	if (error != B_OK)
+		return error;
+	// create the entry
+	int fd = creat(path, 0666);
+	if (fd < 0)
+		return errno;
+	// set the partition info
+	error = B_OK;
+	if (ioctl(fd, B_SET_PARTITION, &info) < 0)
+		error = errno;
+	close(fd);
+	return error;
 }
 
 // UnpublishDevice
 status_t
 KPartition::UnpublishDevice()
 {
-	// not implemented
-	return B_ERROR;
+	// get the entry path
+	char path[B_PATH_NAME_LENGTH];
+	status_t error = GetPath(path);
+	if (error != B_OK)
+		return error;
+	// remove the entry
+	if (remove(path) < 0)
+		return errno;
+	return B_OK;
 }
 
 // SetBusy
@@ -381,7 +413,10 @@ KPartition::GetPath(char *path) const
 		int32 leafLen = strlen("/raw");
 		if (len <= leafLen || strcmp(path + len - leafLen, "/raw"))
 			return B_ERROR;
-		sprintf(path + len - leafLen + 1, "%ld", Index());
+// TODO: For the time being the name is "obos_*" to not interfere with R5's
+// names.
+//		sprintf(path + len - leafLen + 1, "%ld", Index());
+		sprintf(path + len - leafLen + 1, "obos_%ld", Index());
 	} else {
 		// Our parent is a normal partition, no device: Append our index.
 		sprintf(path + len, "_%ld", Index());