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The beginning of the implementation of the DiskDevice API. Basic iteration functionality is implemented, though not tested yet.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2659 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2003-02-08 00:42:14 +00:00
parent 0598bd378f
commit b11d9a08b1
4 changed files with 474 additions and 64 deletions
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src/kits/storage/DiskDevice.cpp
+137 -14
View File
@@ -3,7 +3,12 @@
// by the OpenBeOS license.
//---------------------------------------------------------------------
#include <new.h>
#include <DiskDevice.h>
#include <Message.h>
#include <Partition.h>
#include <Session.h>
/*! \class BDiskDevice
\brief A BDiskDevice object represents a storage device.
@@ -13,7 +18,18 @@
/*! \brief Creates an uninitialized BDiskDevice object.
*/
BDiskDevice::BDiskDevice()
: fSessions(10, true),
fUniqueID(-1),
fChangeCounter(0),
fMediaStatus(B_ERROR),
fSize(0),
fBlockSize(0),
fType(0),
fReadOnly(false),
fRemovable(false)//,
// fIsFloppy(false)
{
fPath[0] = '\0';
}
// destructor
@@ -23,6 +39,23 @@ BDiskDevice::~BDiskDevice()
{
}
// Unset
void
BDiskDevice::Unset()
{
fSessions.MakeEmpty();
fUniqueID = -1;
fChangeCounter = 0;
fMediaStatus = B_ERROR;
fSize = 0;
fBlockSize = 0;
fType = 0;
fReadOnly = false;
fRemovable = false;
// fIsFloppy = false;
fPath[0] = '\0';
}
// Size
/*! \brief Returns the size of the device.
\return The size of the device in bytes.
@@ -30,7 +63,7 @@ BDiskDevice::~BDiskDevice()
off_t
BDiskDevice::Size() const
{
return 0; // not implemented
return fSize;
}
// BlockSize
@@ -40,7 +73,7 @@ BDiskDevice::Size() const
int32
BDiskDevice::BlockSize() const
{
return 0; // not implemented
return fBlockSize;
}
// CountSessions
@@ -50,7 +83,7 @@ BDiskDevice::BlockSize() const
int32
BDiskDevice::CountSessions() const
{
return 0; // not implemented
return fSessions.CountItems();
}
// SessionAt
@@ -62,7 +95,7 @@ BDiskDevice::CountSessions() const
BSession *
BDiskDevice::SessionAt(int32 index) const
{
return NULL; // not implemented
return fSessions.ItemAt(index);
}
// CountPartitions
@@ -72,17 +105,20 @@ BDiskDevice::SessionAt(int32 index) const
int32
BDiskDevice::CountPartitions() const
{
return 0; // not implemented
int32 count = 0;
for (int32 i = 0; BSession *session = SessionAt(i); i++)
count += session->CountPartitions();
return count;
}
// DevicePath
// Path
/*! \brief Returns the path to the device.
\return The path to the device.
*/
const char *
BDiskDevice::DevicePath() const
BDiskDevice::Path() const
{
return NULL; // not implemented
return (fPath[0] != '\0' ? fPath : NULL);
}
// GetName
@@ -102,6 +138,7 @@ BDiskDevice::DevicePath() const
void
BDiskDevice::GetName(BString *name, bool includeBusID, bool includeLUN) const
{
// not implemented
}
// GetName
@@ -121,6 +158,7 @@ BDiskDevice::GetName(BString *name, bool includeBusID, bool includeLUN) const
void
BDiskDevice::GetName(char *name, bool includeBusID, bool includeLUN) const
{
// not implemented
}
// IsReadOnly
@@ -130,7 +168,7 @@ BDiskDevice::GetName(char *name, bool includeBusID, bool includeLUN) const
bool
BDiskDevice::IsReadOnly() const
{
return false; // not implemented
return fReadOnly;
}
// IsRemovable
@@ -140,7 +178,7 @@ BDiskDevice::IsReadOnly() const
bool
BDiskDevice::IsRemovable() const
{
return false; // not implemented
return fRemovable;
}
// HasMedia
@@ -150,7 +188,7 @@ BDiskDevice::IsRemovable() const
bool
BDiskDevice::HasMedia() const
{
return false; // not implemented
return (fMediaStatus == B_OK);
}
// IsFloppy
@@ -160,7 +198,7 @@ BDiskDevice::HasMedia() const
bool
BDiskDevice::IsFloppy() const
{
return false; // not implemented
return !strcmp(fPath, "/dev/disk/floppy/raw");
}
// Type
@@ -183,7 +221,7 @@ BDiskDevice::IsFloppy() const
uint8
BDiskDevice::Type() const
{
return 0; // not implemented
return fType;
}
// UniqueID
@@ -199,7 +237,7 @@ BDiskDevice::Type() const
int32
BDiskDevice::UniqueID() const
{
return -1; // not implemented
return fUniqueID;
}
// Eject
@@ -311,3 +349,88 @@ BDiskDevice::operator=(const BDiskDevice &)
return *this;
}
// find_string
static
status_t
find_string(BMessage *message, const char *name, char *buffer)
{
const char *str;
status_t error = message->FindString(name, &str);
if (error != B_OK)
strcpy(buffer, str);
return error;
}
// _Unarchive
status_t
BDiskDevice::_Unarchive(BMessage *archive)
{
Unset();
status_t error = (archive ? B_OK : B_BAD_VALUE);
if (error == B_OK) {
// ID and change counter
if (error == B_OK)
error = archive->FindInt32("id", &fUniqueID);
if (error == B_OK)
error = archive->FindInt32("change_counter", &fChangeCounter);
// geometry
if (error == B_OK)
error = archive->FindInt64("size", &fSize);
if (error == B_OK)
error = archive->FindInt32("block_size", &fBlockSize);
if (error == B_OK)
error = archive->FindInt8("type", (int8*)&fType);
if (error == B_OK)
error = archive->FindBool("removable", &fRemovable);
if (error == B_OK)
error = archive->FindBool("read_only", fReadOnly);
// if (error == B_OK)
// error = archive->FindBool("write_once", fGeometry.write_once);
// other data
if (error == B_OK)
error = find_string(archive, "path", fPath);
if (error == B_OK)
error = archive->FindInt32("media_status", &fMediaStatus);
// sessions
type_code fieldType;
int32 count = 0;
if (error == B_OK)
error = archive->GetInfo("sessions", &fieldType, &count);
for (int32 i = 0; error == B_OK && i < count; i++) {
// get the archived session
BMessage sessionArchive;
error = archive->FindMessage("sessions", i, &sessionArchive);
// allocate a session object
BSession *session = NULL;
if (error == B_OK) {
session = new(nothrow) BSession;
if (!session)
error = B_NO_MEMORY;
}
// unarchive the session
if (error == B_OK)
error = session->_Unarchive(&sessionArchive);
// add the session
if (error == B_OK && !_AddSession(session))
error = B_NO_MEMORY;
// cleanup on error
if (error != B_OK && session)
delete session;
}
}
// cleanup on error
if (error != B_OK)
Unset();
return error;
}
// _AddSession
bool
BDiskDevice::_AddSession(BSession *session)
{
bool result = fSessions.AddItem(session);
if (result)
session->_SetDevice(this);
return result;
}