added disk systems rescan to DiskDeviceManager, and called it in the post init phase

the next step would be to rescan the partition tree with a job to recognize unrecognized partitions (asynchronously ?)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18737 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/ddm.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2006, Jerome Duval. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ */
+#ifndef _KERNEL_DDM_H
+#define _KERNEL_DDM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+status_t ddm_init_post_modules(struct kernel_args *args);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* _KERNEL_DDM_H */

headers/private/kernel/disk_device_manager/KDiskDeviceManager.h

@@ -120,6 +120,7 @@ public:
 	// by the registrar.
 
 	status_t InitialDeviceScan();
+	status_t RescanDiskSystems();
 
 private:
 	status_t _AddPartitioningSystem(const char *name);

src/system/kernel/disk_device_manager/KDiskDeviceManager.cpp

@@ -929,6 +929,31 @@ KDiskDeviceManager::InitialDeviceScan()
 	return error;
 }
 
+//RescanDiskSystems
+status_t
+KDiskDeviceManager::RescanDiskSystems()
+{
+	// load file systems list
+	void *cookie = open_module_list(kFileSystemPrefix);
+	
+	while (true) {
+		char name[B_FILE_NAME_LENGTH];
+		size_t nameLength = sizeof(name);
+		module_info *module;
+
+		if (read_next_module_name(cookie, name, &nameLength) != B_OK)
+			break;
+		if (FindDiskSystem(name))
+			continue;
+		_AddFileSystem(name);
+        }
+        close_module_list(cookie);
+
+	// TODO rescan partition tree for unrecognized partitions
+
+	return B_OK;
+}
+
 // _AddPartitioningSystem
 status_t
 KDiskDeviceManager::_AddPartitioningSystem(const char *name)

src/system/kernel/disk_device_manager/disk_device_manager.cpp

@@ -3,6 +3,7 @@
 #include <KernelExport.h>
 #include <stdio.h>
 
+#include "ddm.h"
 #include "disk_device_manager.h"
 #include "KDiskDevice.h"
 #include "KDiskDeviceJob.h"
@@ -273,3 +274,10 @@ update_disk_device_job_interrupt_properties(disk_job_id jobID,
 	return B_DISK_DEVICE_JOB_CONTINUE;
 }
 
+status_t
+ddm_init_post_modules(kernel_args *args)
+{
+	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
+	return manager->RescanDiskSystems();
+}
+

src/system/kernel/main.c

@@ -16,6 +16,7 @@
 #include <cbuf.h>
 #include <cpu.h>
 #include <debug.h>
+#include <ddm.h>
 #include <elf.h>
 #include <int.h>
 #include <kdevice_manager.h>
@@ -227,6 +228,7 @@ main2(void *unused)
 	cpu_init_post_modules(&sKernelArgs);
 	vm_init_post_modules(&sKernelArgs);
 	debug_init_post_modules(&sKernelArgs);
+	ddm_init_post_modules(&sKernelArgs);
 
 	// start the init process
 	{