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Kernel/LibC: Implement basic epoll

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This implementation is on top of inodes instead of fds as linux does it.
If I start finding ports/software that relies on epoll allowing
duplicate inodes, I will do what linux does.

I'm probably missing multiple epoll_notify's which may cause hangs but
the system seems to work fine :dd:
This commit is contained in:
Bananymous
2025-05-13 10:10:35 +03:00
parent 143a00626b
commit 1bcd1edbf5
43 changed files with 627 additions and 119 deletions
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3
kernel/include/kernel/Device/DebugDevice.h
View File

@@ -3,7 +3,7 @@
namespace Kernel
{
class DebugDevice : public CharacterDevice
class DebugDevice final : public CharacterDevice
{
public:
static BAN::ErrorOr<BAN::RefPtr<DebugDevice>> create(mode_t, uid_t, gid_t);
@@ -24,6 +24,7 @@ namespace Kernel
virtual bool can_read_impl() const override { return false; }
virtual bool can_write_impl() const override { return true; }
virtual bool has_error_impl() const override { return false; }
virtual bool has_hangup_impl() const override { return false; }
private:
const dev_t m_rdev;

1
kernel/include/kernel/Device/FramebufferDevice.h
View File

@@ -38,6 +38,7 @@ namespace Kernel
virtual bool can_read_impl() const override { return true; }
virtual bool can_write_impl() const override { return true; }
virtual bool has_error_impl() const override { return false; }
virtual bool has_hangup_impl() const override { return false; }
private:
FramebufferDevice(mode_t mode, uid_t uid, gid_t gid, dev_t rdev, paddr_t paddr, uint32_t width, uint32_t height, uint32_t pitch, uint8_t bpp);

3
kernel/include/kernel/Device/NullDevice.h
View File

@@ -5,7 +5,7 @@
namespace Kernel
{
class NullDevice : public CharacterDevice
class NullDevice final : public CharacterDevice
{
public:
static BAN::ErrorOr<BAN::RefPtr<NullDevice>> create(mode_t, uid_t, gid_t);
@@ -26,6 +26,7 @@ namespace Kernel
virtual bool can_read_impl() const override { return false; }
virtual bool can_write_impl() const override { return true; }
virtual bool has_error_impl() const override { return false; }
virtual bool has_hangup_impl() const override { return false; }
private:
const dev_t m_rdev;

3
kernel/include/kernel/Device/RandomDevice.h
View File

@@ -3,7 +3,7 @@
namespace Kernel
{
class RandomDevice : public CharacterDevice
class RandomDevice final : public CharacterDevice
{
public:
static BAN::ErrorOr<BAN::RefPtr<RandomDevice>> create(mode_t, uid_t, gid_t);
@@ -24,6 +24,7 @@ namespace Kernel
virtual bool can_read_impl() const override { return true; }
virtual bool can_write_impl() const override { return false; }
virtual bool has_error_impl() const override { return false; }
virtual bool has_hangup_impl() const override { return false; }
private:
const dev_t m_rdev;

3
kernel/include/kernel/Device/ZeroDevice.h
View File

@@ -3,7 +3,7 @@
namespace Kernel
{
class ZeroDevice : public CharacterDevice
class ZeroDevice final : public CharacterDevice
{
public:
static BAN::ErrorOr<BAN::RefPtr<ZeroDevice>> create(mode_t, uid_t, gid_t);
@@ -24,6 +24,7 @@ namespace Kernel
virtual bool can_read_impl() const override { return true; }
virtual bool can_write_impl() const override { return false; }
virtual bool has_error_impl() const override { return false; }
virtual bool has_hangup_impl() const override { return false; }
private:
const dev_t m_rdev;