diff --git a/Kernel/File.cpp b/Kernel/File.cpp new file mode 100644 index 0000000000..8f09ad25e8 --- /dev/null +++ b/Kernel/File.cpp @@ -0,0 +1,31 @@ +#include +#include + +File::File() +{ +} + +File::~File() +{ +} + +KResultOr> File::open(int options) +{ + UNUSED_PARAM(options); + return FileDescriptor::create(this); +} + +void File::close() +{ +} + +int File::ioctl(Process&, unsigned, unsigned) +{ + return -ENOTTY; +} + +KResultOr File::mmap(Process&, LinearAddress, size_t, size_t) +{ + return KResult(-ENODEV); +} + diff --git a/Kernel/File.h b/Kernel/File.h new file mode 100644 index 0000000000..51235cf5e0 --- /dev/null +++ b/Kernel/File.h @@ -0,0 +1,36 @@ +#include +#include +#include + +class Process; + +class File : public Retainable { +public: + virtual ~File(); + + virtual KResultOr> 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 int ioctl(Process&, unsigned request, unsigned arg); + virtual KResultOr mmap(Process&, LinearAddress preferred_laddr, size_t offset, size_t size); + + virtual String absolute_path() const = 0; + + virtual const char* class_name() const = 0; + + virtual bool is_seekable() const { return false; } + + virtual bool is_device() const { return false; } + virtual bool is_tty() const { return false; } + virtual bool is_master_pty() const { return false; } + virtual bool is_block_device() const { return false; } + virtual bool is_character_device() const { return false; } + +protected: + File(); +};