sortix-mirror/sortix/filesystem.h

99 lines
2.4 KiB
C++

/******************************************************************************
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
This file is part of Sortix.
Sortix is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along
with Sortix. If not, see <http://www.gnu.org/licenses/>.
filesystem.h
Abstracts away a file system device.
******************************************************************************/
#ifndef SORTIX_FILESYSTEM_H
#define SORTIX_FILESYSTEM_H
#include "device.h"
#include "mount.h"
namespace Sortix
{
class Thread;
namespace FileSystem
{
struct SysCallback
{
Device* device;
union { int deviceError; nat deviceType; }
}
}
// TODO: These belong in libmaxsi!
const nat O_RDONLY = 1;
const nat O_WRONLY = 2;
const nat O_RDWR = 3;
const nat O_EXEC = 4;
const nat O_SEARCH = 5;
const nat O_LOWERFLAGS = 0x7;
// TODO: Sortix might never support all of these flags if they are stupid.
const nat O_APPEND = (1<<3);
const nat O_CLOEXEC = (1<<4);
const nat O_CREAT = (1<<5);
const nat O_DIRECTORY = (1<<6);
const nat O_DSYNC = (1<<6);
const nat O_EXCL = (1<<7);
const nat O_NOCTTY = (1<<8);
const nat O_NOFOLLOW = (1<<9);
const nat O_RSYNC = (1<<11);
const nat O_SYNC = (1<<12);
const nat O_TRUNC = (1<<13);
const nat O_TTY_INIT = (1<<13);
// If O_RDONLY, then no one is allowed to write to this, or if O_RDWD then
// no one else is allowed to use this besides me.
const nat O_EXCLUSIVELY = (1<<14);
const nat O_USERSPACEABLE = ((1<<15)-1);
const nat O_MOUNT = (1<<31);
class DevFileSystem : public Device
{
public:
DevFileSystem() { };
virtual ~DevFileSystem() { }
public:
bool LegalNodeName(const char* name);
public:
virtual int Initialize(MountPoint* mountPoint, const char* commandLine) = 0;
public:
virtual bool Open(const char* path, nat openFlags, nat mode, FileSystem::SysCallback* callbackInfo, Thread* thread);
};
namespace FileSystem
{
DevFileSystem* CreateDriver(const char* fsType);
}
}
#endif