* Renamed ddm_user_interface.cpp to ddm_userland_interface.cpp which

matches the name of the header much better. :-)
* Implemented the syscalls for iterating through and finding disk systems.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3902 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/disk_device_manager/KDiskDeviceManager.h

@@ -76,8 +76,8 @@ public:
 	// Disk Systems
 
 	// manager must be locked
-	KDiskSystem *DiskSystemWithName(const char *name);
-	KDiskSystem *DiskSystemWithID(disk_system_id id);
+	KDiskSystem *FindDiskSystem(const char *name);
+	KDiskSystem *FindDiskSystem(disk_system_id id);
 	int32 CountDiskSystems();
 	KDiskSystem *NextDiskSystem(int32 *cookie);
 

headers/private/kernel/disk_device_manager/KDiskSystem.h

@@ -5,6 +5,8 @@
 
 #include "disk_device_manager.h"
 
+struct user_disk_system_info;
+
 namespace BPrivate {
 namespace DiskDevice {
 
@@ -26,6 +28,8 @@ public:
 	virtual bool IsFileSystem() const;
 	bool IsPartitioningSystem() const;
 
+	void GetInfo(user_disk_system_info *info);
+
 	// manager will be locked
 	status_t Load();		// load/unload -- can be nested
 	void Unload();			//

src/kernel/core/disk_device_manager/Jamfile

@@ -11,7 +11,7 @@ UsePrivateHeaders storage ;
 UseHeaders [ FDirName $(OBOS_TOP) src tests kits storage virtualdrive ] ;
 
 SharedLibrary disk_device_manager :
-	ddm_user_interface.cpp
+	ddm_userland_interface.cpp
 	disk_device_manager.cpp
 	KDiskDevice.cpp
 	KDiskDeviceJob.cpp

src/kernel/core/disk_device_manager/KDiskSystem.cpp

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "ddm_userland_interface.h"
 #include "KDiskDeviceManager.h"
 #include "KDiskDeviceUtils.h"
 #include "KDiskSystem.h"
@@ -78,6 +79,18 @@ KDiskSystem::IsPartitioningSystem() const
 	return !IsFileSystem();
 }
 
+// GetInfo
+void
+KDiskSystem::GetInfo(user_disk_system_info *info)
+{
+	if (!info)
+		return;
+	info->id = ID();
+	strcpy(info->name, Name());
+	strcpy(info->pretty_name, PrettyName());
+	info->file_system = IsFileSystem();
+}
+
 // Load
 status_t
 KDiskSystem::Load()

src/kernel/core/disk_device_manager/ddm_userland_interface.cpp

@@ -3,6 +3,7 @@
 #include <KDiskDevice.h>
 #include <KDiskDeviceManager.h>
 #include <KDiskDeviceUtils.h>
+#include <KDiskSystem.h>
 
 #include "ddm_userland_interface.h"
 #include "UserDataWriter.h"
@@ -53,3 +54,54 @@ _kern_get_disk_device_data(partition_id deviceID, bool shadow,
 	return B_ERROR;
 }
 
+// _kern_get_disk_system_info
+status_t
+_kern_get_disk_system_info(disk_system_id id, user_disk_system_info *info)
+{
+	if (!info)
+		return B_BAD_VALUE;
+	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
+	if (ManagerLocker locker = manager) {
+		if (KDiskSystem *diskSystem = manager->FindDiskSystem(id)) {
+			DiskSystemLoader _(diskSystem, true);
+			diskSystem->GetInfo(info);
+			return B_OK;
+		}
+	}
+	return B_ENTRY_NOT_FOUND;
+}
+
+// _kern_get_next_disk_system_info
+status_t
+_kern_get_next_disk_system_info(int32 *cookie, user_disk_system_info *info)
+{
+	if (!cookie || !info)
+		return B_BAD_VALUE;
+	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
+	if (ManagerLocker locker = manager) {
+		if (KDiskSystem *diskSystem = manager->NextDiskSystem(cookie)) {
+			DiskSystemLoader _(diskSystem, true);
+			diskSystem->GetInfo(info);
+			return B_OK;
+		}
+	}
+	return B_ENTRY_NOT_FOUND;
+}
+
+// _kern_find_disk_system
+status_t
+_kern_find_disk_system(const char *name, user_disk_system_info *info)
+{
+	if (!name || !info)
+		return B_BAD_VALUE;
+	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
+	if (ManagerLocker locker = manager) {
+		if (KDiskSystem *diskSystem = manager->FindDiskSystem(name)) {
+			DiskSystemLoader _(diskSystem, true);
+			diskSystem->GetInfo(info);
+			return B_OK;
+		}
+	}
+	return B_ENTRY_NOT_FOUND;
+}
+