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Kernel: Make ProcessTracer inherit from File.

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This commit is contained in:
Andreas Kling 2019-04-28 15:02:55 +02:00
parent 7ec1f6ab3c
commit e886337a67
12 changed files with 105 additions and 182 deletions
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2
Kernel/Devices/BXVGADevice.cpp
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@ -84,7 +84,7 @@ dword BXVGADevice::find_framebuffer_address()
return framebuffer_address;
}
Region* BXVGADevice::mmap(Process& process, LinearAddress preferred_laddr, size_t offset, size_t size)
KResultOr<Region*> BXVGADevice::mmap(Process& process, LinearAddress preferred_laddr, size_t offset, size_t size)
{
ASSERT(offset == 0);
ASSERT(size == framebuffer_size_in_bytes());

2
Kernel/Devices/BXVGADevice.h
View file

@ -18,7 +18,7 @@ public:
void set_y_offset(int);
virtual int ioctl(Process&, unsigned request, unsigned arg) override;
virtual Region* mmap(Process&, LinearAddress preferred_laddr, size_t offset, size_t) override;
virtual KResultOr<Region*> mmap(Process&, LinearAddress preferred_laddr, size_t offset, size_t) override;
size_t framebuffer_size_in_bytes() const { return m_framebuffer_size.area() * sizeof(dword) * 2; }
Size framebuffer_size() const { return m_framebuffer_size; }

2
Kernel/Devices/BlockDevice.h
View file

@ -7,7 +7,7 @@ class BlockDevice : public Device {
public:
virtual ~BlockDevice() override;
virtual Region* mmap(Process&, LinearAddress preferred_laddr, size_t offset, size_t size) = 0;
virtual bool is_seekable() const override { return true; }
protected:
BlockDevice(unsigned major, unsigned minor) : Device(major, minor) { }

14
Kernel/Devices/Device.cpp
View file

@ -13,17 +13,7 @@ Device::~Device()
VFS::the().unregister_device(*this);
}
KResultOr<Retained<FileDescriptor>> Device::open(int options)
String Device::absolute_path() const
{
UNUSED_PARAM(options);
return FileDescriptor::create(this);
}
void Device::close()
{
}
int Device::ioctl(Process&, unsigned, unsigned)
{
return -ENOTTY;
return String::format("device:%u,%u (%s)", m_major, m_minor, class_name());
}

31
Kernel/Devices/Device.h
View file

@ -33,42 +33,21 @@
// - Subclasses should take care to validate incoming addresses before dereferencing.
//
#include <AK/Retainable.h>
#include <AK/Types.h>
#include <Kernel/FileSystem/FileDescriptor.h>
#include <Kernel/File.h>
class Process;
class Device : public Retainable<Device> {
class Device : public File {
public:
virtual ~Device();
InodeMetadata metadata() const { return { }; }
virtual KResultOr<Retained<FileDescriptor>> open(int options);
virtual void close();
virtual bool can_read(Process&) const = 0;
virtual bool can_write(Process&) const = 0;
virtual ssize_t read(Process&, byte*, ssize_t) = 0;
virtual ssize_t write(Process&, const byte*, ssize_t) = 0;
virtual ~Device() override;
unsigned major() const { return m_major; }
unsigned minor() const { return m_minor; }
virtual bool is_tty() const { return false; }
virtual bool is_master_pty() const { return false; }
virtual int ioctl(Process&, unsigned request, unsigned arg);
virtual const char* class_name() const = 0;
virtual String absolute_path() const override;
uid_t uid() const { return m_uid; }
uid_t gid() const { return m_gid; }
virtual bool is_block_device() const { return false; }
virtual bool is_character_device() const { return false; }
virtual bool is_device() const override { return true; }
protected:
Device(unsigned major, unsigned minor);