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Added an InitCheck() method; if something goes wrong, the device won't be

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added to the boot device list anymore. This is currently used to remove
devices that don't support the LBA access mechanism (since CHS support has
still not been implemented).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8650 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-08-25 15:25:08 +00:00
parent b430068a23
commit f191528003
1 changed files with 18 additions and 3 deletions
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21
src/kernel/boot/platform/bios_ia32/devices.cpp
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@ -95,6 +95,8 @@ class BIOSDrive : public Node {
BIOSDrive(uint8 driveID);
virtual ~BIOSDrive();
status_t InitCheck() const;
virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize);
virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize);
@ -219,6 +221,14 @@ BIOSDrive::~BIOSDrive()
}
status_t
BIOSDrive::InitCheck() const
{
return fLBA ? B_OK : B_ERROR;
// ToDo: for now...
}
ssize_t
BIOSDrive::ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize)
{
@ -309,8 +319,12 @@ platform_get_boot_device(struct stage2_args *args, Node **_device)
{
printf("boot drive ID: %x\n", gBootDriveID);
Node *drive = new BIOSDrive(gBootDriveID);
BIOSDrive *drive = new BIOSDrive(gBootDriveID);
if (drive->InitCheck() != B_OK) {
puts("no boot drive!");
return B_ERROR;
}
printf("drive size: %Ld bytes\n", drive->Size());
*_device = drive;
@ -350,6 +364,7 @@ platform_add_block_devices(stage2_args *args, NodeList *devicesList)
if (get_number_of_drives(&driveCount) == B_OK)
printf("number of drives: %d\n", driveCount);
return B_OK;
return B_OK;
}