Ingo Weinhold
7c8a352db7
* Corrected checking of parameters (name). * Gracefully deals with disk systems that rescan after initialization, now. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22448 a95241bf-73f2-0310-859d-f6bbb57e9c96
139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
/*
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* Copyright 2003-2007, Haiku, Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Ingo Weinhold <[email protected]>
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* Lubos Kulic <[email protected]>
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*/
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#include <stdio.h>
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#include <string.h>
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#include <KernelExport.h>
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#include <DiskDeviceDefs.h>
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#include <KDiskDevice.h>
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#include <KDiskDeviceManager.h>
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#include <KDiskDeviceUtils.h>
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#include <KDiskSystem.h>
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#include <KPartition.h>
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#include <KPartitionVisitor.h>
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#include <string.h>
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#include "ddm_operation_validation.h"
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#include "KInitializeJob.h"
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// debugging
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//#define DBG(x)
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#define DBG(x) x
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#define OUT dprintf
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/*!
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Creates the job.
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\param partition the partition to initialize
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\param diskSystemID which disk system the partition should be initialized with
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\param parameters additional parameters for the operation
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*/
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KInitializeJob::KInitializeJob(partition_id partition,
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disk_system_id diskSystemID, const char *name, const char *parameters)
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: KDiskDeviceJob(B_DISK_DEVICE_JOB_INITIALIZE, partition, partition),
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fDiskSystemID(diskSystemID),
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fName(!name ? NULL : strdup(name)),
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fParameters(!parameters ? NULL : strdup(parameters))
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{
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SetDescription("initializing the partition with given disk system");
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}
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KInitializeJob::~KInitializeJob()
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{
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free(fName);
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free(fParameters);
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}
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status_t
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KInitializeJob::Do()
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{
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DBG(OUT("KInitializeJob::Do(%ld)\n", PartitionID()));
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KDiskDeviceManager *manager = KDiskDeviceManager::Default();
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KPartition *partition = manager->WriteLockPartition(PartitionID());
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if (!partition) {
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SetErrorMessage("Couldn't find partition.");
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return B_ENTRY_NOT_FOUND;
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}
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PartitionRegistrar registrar(partition, true);
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PartitionRegistrar deviceRegistrar(partition->Device(), true);
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DeviceWriteLocker locker(partition->Device(), true);
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// basic checks
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// all descendants should be marked busy/descendant busy
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if (IsPartitionNotBusy(partition)) {
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SetErrorMessage("Can't initialize non-busy partition!");
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return B_ERROR;
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}
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if (partition->DiskSystem()) {
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SetErrorMessage("Partition is already initialized.");
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return B_BAD_VALUE;
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}
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// get the disk system
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KDiskSystem *diskSystemToInit = manager->LoadDiskSystem(fDiskSystemID);
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if (!diskSystemToInit) {
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SetErrorMessage("Given DiskSystemID doesn't correspond to any "
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"known DiskSystem.");
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return B_BAD_VALUE;
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}
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DiskSystemLoader loader(diskSystemToInit, true);
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// check the parameters
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char name[B_DISK_DEVICE_NAME_LENGTH];
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if (fName)
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strlcpy(name, fName, sizeof(name));
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status_t error = validate_initialize_partition(partition,
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partition->ChangeCounter(), diskSystemToInit->Name(),
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fName ? name : NULL, fParameters, false);
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if (error != B_OK) {
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SetErrorMessage("Validation of initializing partition failed.");
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return error;
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}
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if (fName != NULL && strcmp(fName, name) != 0) {
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SetErrorMessage("Requested name not valid.");
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return B_BAD_VALUE;
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}
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// everything seems OK -> let's do the job
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locker.Unlock();
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error = diskSystemToInit->Initialize(partition, fName, fParameters, this);
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if (error != B_OK) {
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SetErrorMessage("Initialization of partition failed!");
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return error;
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}
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locker.Lock();
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if (partition->DiskSystem()) {
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// The disk system might have triggered a rescan after initializing, in
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// which case the disk system is already set. Just check, if it is the
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// right one.
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if (partition->DiskSystem() != diskSystemToInit) {
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SetErrorMessage("Partition has wrong disk system after "
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"initialization.");
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return B_ERROR;
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}
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} else
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partition->SetDiskSystem(diskSystemToInit);
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return B_OK;
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}
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