mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-25 17:10:23 +00:00
08cd75ac4b
After reading a bunch of POSIX specs, I've learned that a file descriptor is the number that refers to a file description, not the description itself. So this patch renames FileDescriptor to FileDescription, and Process now has FileDescription* file_description(int fd).
96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
#pragma once
|
|
|
|
#include "InodeIdentifier.h"
|
|
#include "InodeMetadata.h"
|
|
#include "UnixTypes.h"
|
|
#include <AK/AKString.h>
|
|
#include <AK/ByteBuffer.h>
|
|
#include <AK/Function.h>
|
|
#include <AK/HashMap.h>
|
|
#include <AK/OwnPtr.h>
|
|
#include <AK/RetainPtr.h>
|
|
#include <AK/Retainable.h>
|
|
#include <AK/WeakPtr.h>
|
|
#include <AK/kstdio.h>
|
|
#include <Kernel/Devices/DiskDevice.h>
|
|
#include <Kernel/KResult.h>
|
|
#include <Kernel/Lock.h>
|
|
|
|
static const dword mepoch = 476763780;
|
|
|
|
class Inode;
|
|
class FileDescription;
|
|
class LocalSocket;
|
|
class VMObject;
|
|
|
|
class FS : public Retainable<FS> {
|
|
friend class Inode;
|
|
|
|
public:
|
|
virtual ~FS();
|
|
|
|
unsigned fsid() const { return m_fsid; }
|
|
static FS* from_fsid(dword);
|
|
static void sync();
|
|
|
|
virtual bool initialize() = 0;
|
|
virtual const char* class_name() const = 0;
|
|
virtual InodeIdentifier root_inode() const = 0;
|
|
|
|
bool is_readonly() const { return m_readonly; }
|
|
|
|
virtual unsigned total_block_count() const { return 0; }
|
|
virtual unsigned free_block_count() const { return 0; }
|
|
virtual unsigned total_inode_count() const { return 0; }
|
|
virtual unsigned free_inode_count() const { return 0; }
|
|
|
|
struct DirectoryEntry {
|
|
DirectoryEntry(const char* name, InodeIdentifier, byte file_type);
|
|
DirectoryEntry(const char* name, int name_length, InodeIdentifier, byte file_type);
|
|
char name[256];
|
|
int name_length { 0 };
|
|
InodeIdentifier inode;
|
|
byte file_type { 0 };
|
|
};
|
|
|
|
virtual RetainPtr<Inode> create_inode(InodeIdentifier parentInode, const String& name, mode_t, off_t size, dev_t, int& error) = 0;
|
|
virtual RetainPtr<Inode> create_directory(InodeIdentifier parentInode, const String& name, mode_t, int& error) = 0;
|
|
|
|
virtual RetainPtr<Inode> get_inode(InodeIdentifier) const = 0;
|
|
|
|
virtual void flush_writes() {}
|
|
|
|
protected:
|
|
FS();
|
|
|
|
mutable Lock m_lock { "FS" };
|
|
|
|
private:
|
|
unsigned m_fsid { 0 };
|
|
bool m_readonly { false };
|
|
};
|
|
|
|
inline FS* InodeIdentifier::fs()
|
|
{
|
|
return FS::from_fsid(m_fsid);
|
|
}
|
|
|
|
inline const FS* InodeIdentifier::fs() const
|
|
{
|
|
return FS::from_fsid(m_fsid);
|
|
}
|
|
|
|
inline bool InodeIdentifier::is_root_inode() const
|
|
{
|
|
return (*this) == fs()->root_inode();
|
|
}
|
|
|
|
namespace AK {
|
|
|
|
template<>
|
|
struct Traits<InodeIdentifier> {
|
|
static unsigned hash(const InodeIdentifier& inode) { return pair_int_hash(inode.fsid(), inode.index()); }
|
|
static void dump(const InodeIdentifier& inode) { kprintf("%02u:%08u", inode.fsid(), inode.index()); }
|
|
};
|
|
|
|
}
|