98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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filesystem.h
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Allows access to stored sequences of bytes in an orderly fashion.
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******************************************************************************/
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#ifndef SORTIX_FILESYSTEM_H
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#define SORTIX_FILESYSTEM_H
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#include "device.h"
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#include "stream.h"
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namespace Sortix
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{
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// TODO: These belong in libmaxsi!
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// TODO: Sortix might never support all of these flags if they are stupid.
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const int O_RDONLY = 1;
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const int O_WRONLY = 2;
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const int O_RDWR = 3;
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const int O_EXEC = 4;
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const int O_SEARCH = 5;
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const int O_LOWERFLAGS = 0x7;
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const int O_APPEND = (1<<3);
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const int O_CLOEXEC = (1<<4);
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const int O_CREAT = (1<<5);
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const int O_DIRECTORY = (1<<6);
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const int O_DSYNC = (1<<6);
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const int O_EXCL = (1<<7);
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const int O_NOCTTY = (1<<8);
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const int O_NOFOLLOW = (1<<9);
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const int O_RSYNC = (1<<11);
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const int O_SYNC = (1<<12);
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const int O_TRUNC = (1<<13);
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const int O_TTY_INIT = (1<<13);
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class DevFileSystem : public Device
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{
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public:
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virtual Device* Open(const char* path, int flags, mode_t mode) = 0;
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virtual bool Unlink(const char* path) = 0;
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public:
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virtual bool IsType(unsigned type) { return type == Device::FILESYSTEM; }
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};
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class DevFileWrapper : public DevBuffer
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{
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public:
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DevFileWrapper(DevBuffer* buffer, int flags);
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virtual ~DevFileWrapper();
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private:
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DevBuffer* buffer;
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int flags;
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uintmax_t offset;
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public:
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virtual ssize_t Read(byte* dest, size_t count);
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virtual ssize_t Write(const byte* src, size_t count);
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virtual bool IsReadable();
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virtual bool IsWritable();
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virtual size_t BlockSize();
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virtual uintmax_t Size();
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virtual uintmax_t Position();
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virtual bool Seek(uintmax_t position);
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virtual bool Resize(uintmax_t size);
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};
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namespace FileSystem
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{
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void Init();
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Device* Open(const char* path, int flags, mode_t mode);
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bool Unlink(const char* path);
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}
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}
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#endif
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