1017 lines
41 KiB
C++
1017 lines
41 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//===========================================================================//
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#ifndef FILESYSTEM_H
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#define FILESYSTEM_H
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#pragma once
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#include <limits.h>
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#include "tier0/threadtools.h"
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#include "tier0/memalloc.h"
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#include "tier1/interface.h"
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#include "tier1/utlsymbol.h"
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#include "tier1/utlstring.h"
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#include "appframework/IAppSystem.h"
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#include "tier1/checksum_crc.h"
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#include "tier1/checksum_md5.h"
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#include "tier1/refcount.h"
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#ifdef _WIN32
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#pragma once
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#endif
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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class CUtlBuffer;
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class KeyValues;
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class IFileList;
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class IThreadPool;
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class CMemoryFileBacking;
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typedef void * FileHandle_t;
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typedef void * FileCacheHandle_t;
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typedef int FileFindHandle_t;
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typedef void (*FileSystemLoggingFunc_t)( const char *fileName, const char *accessType );
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typedef int WaitForResourcesHandle_t;
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#ifdef _X360
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typedef void* HANDLE;
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#endif
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#define USE_CRC_FILE_TRACKING 0
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// Turn on some extra pure server debug spew in certain builds.
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// WARNING: This spew can be used by hackers to locate places to hack
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// the code to bypas sv_pure! Be careful!
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#if defined( _DEBUG ) || defined( STAGING_ONLY )
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#define PURE_SERVER_DEBUG_SPEW
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#endif
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/// How strict will the pure server be for a particular set of files
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enum EPureServerFileClass
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{
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ePureServerFileClass_Unknown = -1, // dummy debugging value
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ePureServerFileClass_Any = 0,
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ePureServerFileClass_AnyTrusted,
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ePureServerFileClass_CheckHash,
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};
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class IPureServerWhitelist
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{
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public:
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// Reference counting
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virtual void AddRef() = 0;
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virtual void Release() = 0;
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// What should we do with a particular file?
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virtual EPureServerFileClass GetFileClass( const char *pszFilename ) = 0;
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// Access list of trusted keys which we will allow to set trusted content
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virtual int GetTrustedKeyCount() const = 0;
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virtual const byte *GetTrustedKey( int iKeyIndex, int *nKeySize ) const = 0;
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};
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//-----------------------------------------------------------------------------
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// Enums used by the interface
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//-----------------------------------------------------------------------------
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#define FILESYSTEM_MAX_SEARCH_PATHS 128
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enum FileSystemSeek_t
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{
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FILESYSTEM_SEEK_HEAD = SEEK_SET,
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FILESYSTEM_SEEK_CURRENT = SEEK_CUR,
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FILESYSTEM_SEEK_TAIL = SEEK_END,
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};
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enum
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{
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FILESYSTEM_INVALID_FIND_HANDLE = -1
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};
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enum FileWarningLevel_t
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{
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// A problem!
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FILESYSTEM_WARNING = -1,
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// Don't print anything
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FILESYSTEM_WARNING_QUIET = 0,
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// On shutdown, report names of files left unclosed
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FILESYSTEM_WARNING_REPORTUNCLOSED,
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// Report number of times a file was opened, closed
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FILESYSTEM_WARNING_REPORTUSAGE,
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// Report all open/close events to console ( !slow! )
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FILESYSTEM_WARNING_REPORTALLACCESSES,
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// Report all open/close/read events to the console ( !slower! )
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FILESYSTEM_WARNING_REPORTALLACCESSES_READ,
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// Report all open/close/read/write events to the console ( !slower! )
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FILESYSTEM_WARNING_REPORTALLACCESSES_READWRITE,
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// Report all open/close/read/write events and all async I/O file events to the console ( !slower(est)! )
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FILESYSTEM_WARNING_REPORTALLACCESSES_ASYNC,
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};
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// search path filtering
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enum PathTypeFilter_t
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{
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FILTER_NONE = 0, // no filtering, all search path types match
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FILTER_CULLPACK = 1, // pack based search paths are culled (maps and zips)
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FILTER_CULLNONPACK = 2, // non-pack based search paths are culled
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};
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// search path querying (bit flags)
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enum
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{
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PATH_IS_NORMAL = 0x00, // normal path, not pack based
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PATH_IS_PACKFILE = 0x01, // path is a pack file
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PATH_IS_MAPPACKFILE = 0x02, // path is a map pack file
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PATH_IS_REMOTE = 0x04, // path is the remote filesystem
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};
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typedef uint32 PathTypeQuery_t;
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#define IS_PACKFILE( n ) ( n & ( PATH_IS_PACKFILE | PATH_IS_MAPPACKFILE ) )
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#define IS_REMOTE( n ) ( n & PATH_IS_REMOTE )
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enum DVDMode_t
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{
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DVDMODE_OFF = 0, // not using dvd
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DVDMODE_STRICT = 1, // dvd device only
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DVDMODE_DEV = 2, // dev mode, mutiple devices ok
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};
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// In non-retail builds, enable the file blocking access tracking stuff...
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#if defined( TRACK_BLOCKING_IO )
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enum FileBlockingWarning_t
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{
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// Report how long synchronous i/o took to complete
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FILESYSTEM_BLOCKING_SYNCHRONOUS = 0,
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// Report how long async i/o took to complete if AsyncFileFinished caused it to load via "blocking" i/o
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FILESYSTEM_BLOCKING_ASYNCHRONOUS_BLOCK,
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// Report how long async i/o took to complete
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FILESYSTEM_BLOCKING_ASYNCHRONOUS,
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// Report how long the async "callback" took
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FILESYSTEM_BLOCKING_CALLBACKTIMING,
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FILESYSTEM_BLOCKING_NUMBINS,
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};
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#pragma pack(1)
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class FileBlockingItem
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{
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public:
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enum
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{
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FB_ACCESS_OPEN = 1,
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FB_ACCESS_CLOSE = 2,
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FB_ACCESS_READ = 3,
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FB_ACCESS_WRITE = 4,
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FB_ACCESS_APPEND = 5,
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FB_ACCESS_SIZE = 6
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};
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FileBlockingItem() :
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m_ItemType( (FileBlockingWarning_t)0 ),
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m_flElapsed( 0.0f ),
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m_nAccessType( 0 )
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{
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SetFileName( NULL );
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}
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FileBlockingItem( int type, char const *filename, float elapsed, int accessType ) :
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m_ItemType( (FileBlockingWarning_t)type ),
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m_flElapsed( elapsed ),
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m_nAccessType( accessType )
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{
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SetFileName( filename );
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}
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void SetFileName( char const *filename )
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{
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if ( !filename )
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{
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m_szFilename[ 0 ] = 0;
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return;
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}
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int len = Q_strlen( filename );
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if ( len >= sizeof( m_szFilename ) )
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{
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Q_strncpy( m_szFilename, &filename[ len - sizeof( m_szFilename ) + 1 ], sizeof( m_szFilename ) );
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}
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else
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{
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Q_strncpy( m_szFilename, filename, sizeof( m_szFilename ) );
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}
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}
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char const *GetFileName() const
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{
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return m_szFilename;
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}
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FileBlockingWarning_t m_ItemType;
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float m_flElapsed;
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byte m_nAccessType;
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private:
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char m_szFilename[ 32 ];
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};
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#pragma pack()
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class IBlockingFileItemList
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{
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public:
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// You can't call any of the below calls without locking first
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virtual void LockMutex() = 0;
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virtual void UnlockMutex() = 0;
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virtual int First() const = 0;
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virtual int Next( int i ) const = 0;
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virtual int InvalidIndex() const = 0;
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virtual const FileBlockingItem& Get( int index ) const = 0;
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virtual void Reset() = 0;
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};
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#endif // TRACK_BLOCKING_IO
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enum FilesystemMountRetval_t
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{
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FILESYSTEM_MOUNT_OK = 0,
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FILESYSTEM_MOUNT_FAILED,
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};
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enum SearchPathAdd_t
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{
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PATH_ADD_TO_HEAD, // First path searched
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PATH_ADD_TO_TAIL, // Last path searched
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};
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enum FilesystemOpenExFlags_t
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{
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FSOPEN_UNBUFFERED = (1 << 0),
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FSOPEN_FORCE_TRACK_CRC = (1 << 1), // This makes it calculate a CRC for the file (if the file came from disk) regardless
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// of the IFileList passed to RegisterFileWhitelist.
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FSOPEN_NEVERINPACK = (1 << 2), // 360 only, hint to FS that file is not allowed to be in pack file
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};
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#define FILESYSTEM_INVALID_HANDLE ( FileHandle_t )0
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//-----------------------------------------------------------------------------
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// Structures used by the interface
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//-----------------------------------------------------------------------------
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struct FileSystemStatistics
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{
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CInterlockedUInt nReads,
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nWrites,
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nBytesRead,
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nBytesWritten,
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nSeeks;
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};
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//-----------------------------------------------------------------------------
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// File system allocation functions. Client must free on failure
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//-----------------------------------------------------------------------------
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typedef void *(*FSAllocFunc_t)( const char *pszFilename, unsigned nBytes );
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//-----------------------------------------------------------------------------
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// Used to display dirty disk error functions
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//-----------------------------------------------------------------------------
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typedef void (*FSDirtyDiskReportFunc_t)();
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//-----------------------------------------------------------------------------
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// Asynchronous support types
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//-----------------------------------------------------------------------------
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DECLARE_POINTER_HANDLE(FSAsyncControl_t);
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DECLARE_POINTER_HANDLE(FSAsyncFile_t);
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const FSAsyncFile_t FS_INVALID_ASYNC_FILE = (FSAsyncFile_t)(0x0000ffff);
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//---------------------------------------------------------
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// Async file status
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//---------------------------------------------------------
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enum FSAsyncStatus_t
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{
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FSASYNC_ERR_NOT_MINE = -8, // Filename not part of the specified file system, try a different one. (Used internally to find the right filesystem)
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FSASYNC_ERR_RETRY_LATER = -7, // Failure for a reason that might be temporary. You might retry, but not immediately. (E.g. Network problems)
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FSASYNC_ERR_ALIGNMENT = -6, // read parameters invalid for unbuffered IO
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FSASYNC_ERR_FAILURE = -5, // hard subsystem failure
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FSASYNC_ERR_READING = -4, // read error on file
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FSASYNC_ERR_NOMEMORY = -3, // out of memory for file read
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FSASYNC_ERR_UNKNOWNID = -2, // caller's provided id is not recognized
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FSASYNC_ERR_FILEOPEN = -1, // filename could not be opened (bad path, not exist, etc)
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FSASYNC_OK = 0, // operation is successful
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FSASYNC_STATUS_PENDING, // file is properly queued, waiting for service
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FSASYNC_STATUS_INPROGRESS, // file is being accessed
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FSASYNC_STATUS_ABORTED, // file was aborted by caller
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FSASYNC_STATUS_UNSERVICED, // file is not yet queued
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};
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//---------------------------------------------------------
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// Async request flags
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//---------------------------------------------------------
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enum FSAsyncFlags_t
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{
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FSASYNC_FLAGS_ALLOCNOFREE = ( 1 << 0 ), // do the allocation for dataPtr, but don't free
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FSASYNC_FLAGS_FREEDATAPTR = ( 1 << 1 ), // free the memory for the dataPtr post callback
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FSASYNC_FLAGS_SYNC = ( 1 << 2 ), // Actually perform the operation synchronously. Used to simplify client code paths
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FSASYNC_FLAGS_NULLTERMINATE = ( 1 << 3 ), // allocate an extra byte and null terminate the buffer read in
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};
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//---------------------------------------------------------
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// Return value for CheckFileCRC.
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//---------------------------------------------------------
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enum EFileCRCStatus
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{
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k_eFileCRCStatus_CantOpenFile, // We don't have this file.
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k_eFileCRCStatus_GotCRC,
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k_eFileCRCStatus_FileInVPK
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};
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// Used in CacheFileCRCs.
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enum ECacheCRCType
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{
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k_eCacheCRCType_SingleFile,
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k_eCacheCRCType_Directory,
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k_eCacheCRCType_Directory_Recursive
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};
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//---------------------------------------------------------
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// Optional completion callback for each async file serviced (or failed)
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// call is not reentrant, async i/o guaranteed suspended until return
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// Note: If you change the signature of the callback, you will have to account for it in FileSystemV12 (toml [4/18/2005] )
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//---------------------------------------------------------
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struct FileAsyncRequest_t;
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typedef void (*FSAsyncCallbackFunc_t)(const FileAsyncRequest_t &request, int nBytesRead, FSAsyncStatus_t err);
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//---------------------------------------------------------
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// Description of an async request
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//---------------------------------------------------------
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struct FileAsyncRequest_t
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{
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FileAsyncRequest_t() { memset( this, 0, sizeof(*this) ); hSpecificAsyncFile = FS_INVALID_ASYNC_FILE; }
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const char * pszFilename; // file system name
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void * pData; // optional, system will alloc/free if NULL
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int nOffset; // optional initial seek_set, 0=beginning
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int nBytes; // optional read clamp, -1=exist test, 0=full read
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FSAsyncCallbackFunc_t pfnCallback; // optional completion callback
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void * pContext; // caller's unique file identifier
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int priority; // inter list priority, 0=lowest
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unsigned flags; // behavior modifier
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const char * pszPathID; // path ID (NOTE: this field is here to remain binary compatible with release HL2 filesystem interface)
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FSAsyncFile_t hSpecificAsyncFile; // Optional hint obtained using AsyncBeginRead()
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FSAllocFunc_t pfnAlloc; // custom allocator. can be null. not compatible with FSASYNC_FLAGS_FREEDATAPTR
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};
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struct FileHash_t
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{
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enum EFileHashType_t
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{
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k_EFileHashTypeUnknown = 0,
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k_EFileHashTypeEntireFile = 1,
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k_EFileHashTypeIncompleteFile = 2,
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};
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FileHash_t()
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{
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m_eFileHashType = FileHash_t::k_EFileHashTypeUnknown;
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m_cbFileLen = 0;
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m_PackFileID = 0;
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m_nPackFileNumber = 0;
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}
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int m_eFileHashType;
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CRC32_t m_crcIOSequence;
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MD5Value_t m_md5contents;
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int m_cbFileLen;
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int m_PackFileID;
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int m_nPackFileNumber;
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bool operator==( const FileHash_t &src ) const
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{
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return m_crcIOSequence == src.m_crcIOSequence &&
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m_md5contents == src.m_md5contents &&
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m_eFileHashType == src.m_eFileHashType;
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}
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bool operator!=( const FileHash_t &src ) const
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{
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return m_crcIOSequence != src.m_crcIOSequence ||
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m_md5contents != src.m_md5contents ||
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m_eFileHashType != src.m_eFileHashType;
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}
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};
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class CUnverifiedFileHash
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{
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public:
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char m_PathID[MAX_PATH];
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char m_Filename[MAX_PATH];
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int m_nFileFraction;
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FileHash_t m_FileHash;
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};
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class CUnverifiedCRCFile
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{
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public:
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char m_PathID[MAX_PATH];
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char m_Filename[MAX_PATH];
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CRC32_t m_CRC;
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};
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class CUnverifiedMD5File
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{
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public:
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char m_PathID[MAX_PATH];
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char m_Filename[MAX_PATH];
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unsigned char bits[MD5_DIGEST_LENGTH];
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};
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// Spew flags for SetWhitelistSpewFlags (set with the fs_whitelist_spew_flags cvar).
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// Update the comment for the fs_whitelist_spew_flags cvar if you change these.
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#define WHITELIST_SPEW_WHILE_LOADING 0x0001 // list files as they are added to the CRC tracker
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#define WHITELIST_SPEW_RELOAD_FILES 0x0002 // show files the filesystem is telling the engine to reload
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#define WHITELIST_SPEW_DONT_RELOAD_FILES 0x0004 // show files the filesystem is NOT telling the engine to reload
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//-----------------------------------------------------------------------------
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// Interface to fetch a file asynchronously from any source. This is used
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// as a hook
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//-----------------------------------------------------------------------------
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abstract_class IAsyncFileFetch {
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public:
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typedef void *Handle;
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/// Initiate a request. Returns error status, or on success
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/// returns an opaque handle used to terminate the job
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///
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/// Should return FSASYNC_ERR_NOT_MINE if the filename isn't
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/// handled by this interface
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///
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/// The callback is required, and is the only mechanism to communicate
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/// status. (No polling.) The request is automatically destroyed anytime
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/// after the callback is executed.
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virtual FSAsyncStatus_t Start( const FileAsyncRequest_t &request, Handle *pOutHandle, IThreadPool *pThreadPool ) = 0;
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/// Attempt to complete any active work, returning status. The callback WILL
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/// be executed (this is necessary in case we allocated the buffer).
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/// Afterwards, the request is automatically destroyed.
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virtual FSAsyncStatus_t FinishSynchronous( Handle hControl ) = 0;
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/// Terminate any active work and destroy all resources and bookkeeping info.
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/// The callback will NOT be executed.
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virtual FSAsyncStatus_t Abort( Handle hControl ) = 0;
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};
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// This interface is for VPK files to communicate with FileTracker
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abstract_class IThreadedFileMD5Processor
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{
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public:
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virtual int SubmitThreadedMD5Request( uint8 *pubBuffer, int cubBuffer, int PackFileID, int nPackFileNumber, int nPackFileFraction ) = 0;
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virtual bool BlockUntilMD5RequestComplete( int iRequest, MD5Value_t *pMd5ValueOut ) = 0;
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virtual bool IsMD5RequestComplete( int iRequest, MD5Value_t *pMd5ValueOut ) = 0;
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};
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//-----------------------------------------------------------------------------
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// Base file system interface
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//-----------------------------------------------------------------------------
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// This is the minimal interface that can be implemented to provide access to
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// a named set of files.
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#define BASEFILESYSTEM_INTERFACE_VERSION "VBaseFileSystem011"
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abstract_class IBaseFileSystem
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{
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public:
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virtual int Read( void* pOutput, int size, FileHandle_t file ) = 0;
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virtual int Write( void const* pInput, int size, FileHandle_t file ) = 0;
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// if pathID is NULL, all paths will be searched for the file
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virtual FileHandle_t Open( const char *pFileName, const char *pOptions, const char *pathID = 0 ) = 0;
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virtual void Close( FileHandle_t file ) = 0;
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virtual void Seek( FileHandle_t file, int pos, FileSystemSeek_t seekType ) = 0;
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virtual unsigned int Tell( FileHandle_t file ) = 0;
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virtual unsigned int Size( FileHandle_t file ) = 0;
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virtual unsigned int Size( const char *pFileName, const char *pPathID = 0 ) = 0;
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virtual void Flush( FileHandle_t file ) = 0;
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virtual bool Precache( const char *pFileName, const char *pPathID = 0 ) = 0;
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|
|
virtual bool FileExists( const char *pFileName, const char *pPathID = 0 ) = 0;
|
|
virtual bool IsFileWritable( char const *pFileName, const char *pPathID = 0 ) = 0;
|
|
virtual bool SetFileWritable( char const *pFileName, bool writable, const char *pPathID = 0 ) = 0;
|
|
|
|
virtual long GetFileTime( const char *pFileName, const char *pPathID = 0 ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Reads/writes files to utlbuffers. Use this for optimal read performance when doing open/read/close
|
|
//--------------------------------------------------------
|
|
virtual bool ReadFile( const char *pFileName, const char *pPath, CUtlBuffer &buf, int nMaxBytes = 0, int nStartingByte = 0, FSAllocFunc_t pfnAlloc = NULL ) = 0;
|
|
virtual bool WriteFile( const char *pFileName, const char *pPath, CUtlBuffer &buf ) = 0;
|
|
virtual bool UnzipFile( const char *pFileName, const char *pPath, const char *pDestination ) = 0;
|
|
};
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Main file system interface
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#define FILESYSTEM_INTERFACE_VERSION "VFileSystem022"
|
|
|
|
abstract_class IFileSystem : public IAppSystem, public IBaseFileSystem
|
|
{
|
|
public:
|
|
//--------------------------------------------------------
|
|
// Steam operations
|
|
//--------------------------------------------------------
|
|
|
|
virtual bool IsSteam() const = 0;
|
|
|
|
// Supplying an extra app id will mount this app in addition
|
|
// to the one specified in the environment variable "steamappid"
|
|
//
|
|
// If nExtraAppId is < -1, then it will mount that app ID only.
|
|
// (Was needed by the dedicated server b/c the "SteamAppId" env var only gets passed to steam.dll
|
|
// at load time, so the dedicated couldn't pass it in that way).
|
|
virtual FilesystemMountRetval_t MountSteamContent( int nExtraAppId = -1 ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Search path manipulation
|
|
//--------------------------------------------------------
|
|
|
|
// Add paths in priority order (mod dir, game dir, ....)
|
|
// If one or more .pak files are in the specified directory, then they are
|
|
// added after the file system path
|
|
// If the path is the relative path to a .bsp file, then any previous .bsp file
|
|
// override is cleared and the current .bsp is searched for an embedded PAK file
|
|
// and this file becomes the highest priority search path ( i.e., it's looked at first
|
|
// even before the mod's file system path ).
|
|
virtual void AddSearchPath( const char *pPath, const char *pathID, SearchPathAdd_t addType = PATH_ADD_TO_TAIL ) = 0;
|
|
virtual bool RemoveSearchPath( const char *pPath, const char *pathID = 0 ) = 0;
|
|
|
|
// Remove all search paths (including write path?)
|
|
virtual void RemoveAllSearchPaths( void ) = 0;
|
|
|
|
// Remove search paths associated with a given pathID
|
|
virtual void RemoveSearchPaths( const char *szPathID ) = 0;
|
|
|
|
// This is for optimization. If you mark a path ID as "by request only", then files inside it
|
|
// will only be accessed if the path ID is specifically requested. Otherwise, it will be ignored.
|
|
// If there are currently no search paths with the specified path ID, then it will still
|
|
// remember it in case you add search paths with this path ID.
|
|
virtual void MarkPathIDByRequestOnly( const char *pPathID, bool bRequestOnly ) = 0;
|
|
|
|
// converts a partial path into a full path
|
|
// Prefer using the RelativePathToFullPath_safe template wrapper to calling this directly
|
|
virtual const char *RelativePathToFullPath( const char *pFileName, const char *pPathID, OUT_Z_CAP(maxLenInChars) char *pDest, int maxLenInChars, PathTypeFilter_t pathFilter = FILTER_NONE, PathTypeQuery_t *pPathType = NULL ) = 0;
|
|
template <size_t maxLenInChars> const char *RelativePathToFullPath_safe( const char *pFileName, const char *pPathID, OUT_Z_ARRAY char (&pDest)[maxLenInChars], PathTypeFilter_t pathFilter = FILTER_NONE, PathTypeQuery_t *pPathType = NULL )
|
|
{
|
|
return RelativePathToFullPath( pFileName, pPathID, pDest, (int)maxLenInChars, pathFilter, pPathType );
|
|
}
|
|
|
|
// Returns the search path, each path is separated by ;s. Returns the length of the string returned
|
|
// Prefer using the GetSearchPath_safe template wrapper to calling this directly
|
|
virtual int GetSearchPath( const char *pathID, bool bGetPackFiles, OUT_Z_CAP(maxLenInChars) char *pDest, int maxLenInChars ) = 0;
|
|
template <size_t maxLenInChars> int GetSearchPath_safe( const char *pathID, bool bGetPackFiles, OUT_Z_ARRAY char (&pDest)[maxLenInChars] )
|
|
{
|
|
return GetSearchPath( pathID, bGetPackFiles, pDest, (int)maxLenInChars );
|
|
}
|
|
|
|
// interface for custom pack files > 4Gb
|
|
virtual bool AddPackFile( const char *fullpath, const char *pathID ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// File manipulation operations
|
|
//--------------------------------------------------------
|
|
|
|
// Deletes a file (on the WritePath)
|
|
virtual void RemoveFile( char const* pRelativePath, const char *pathID = 0 ) = 0;
|
|
|
|
// Renames a file (on the WritePath)
|
|
virtual bool RenameFile( char const *pOldPath, char const *pNewPath, const char *pathID = 0 ) = 0;
|
|
|
|
// create a local directory structure
|
|
virtual void CreateDirHierarchy( const char *path, const char *pathID = 0 ) = 0;
|
|
|
|
// File I/O and info
|
|
virtual bool IsDirectory( const char *pFileName, const char *pathID = 0 ) = 0;
|
|
|
|
virtual void FileTimeToString( char* pStrip, int maxCharsIncludingTerminator, long fileTime ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Open file operations
|
|
//--------------------------------------------------------
|
|
|
|
virtual void SetBufferSize( FileHandle_t file, unsigned nBytes ) = 0;
|
|
|
|
virtual bool IsOk( FileHandle_t file ) = 0;
|
|
|
|
virtual bool EndOfFile( FileHandle_t file ) = 0;
|
|
|
|
virtual char *ReadLine( char *pOutput, int maxChars, FileHandle_t file ) = 0;
|
|
virtual int FPrintf( FileHandle_t file, PRINTF_FORMAT_STRING const char *pFormat, ... ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Dynamic library operations
|
|
//--------------------------------------------------------
|
|
|
|
// load/unload modules
|
|
virtual CSysModule *LoadModule( const char *pFileName, const char *pPathID = 0, bool bValidatedDllOnly = true ) = 0;
|
|
virtual void UnloadModule( CSysModule *pModule ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// File searching operations
|
|
//--------------------------------------------------------
|
|
|
|
// FindFirst/FindNext. Also see FindFirstEx.
|
|
virtual const char *FindFirst( const char *pWildCard, FileFindHandle_t *pHandle ) = 0;
|
|
virtual const char *FindNext( FileFindHandle_t handle ) = 0;
|
|
virtual bool FindIsDirectory( FileFindHandle_t handle ) = 0;
|
|
virtual void FindClose( FileFindHandle_t handle ) = 0;
|
|
|
|
// Same as FindFirst, but you can filter by path ID, which can make it faster.
|
|
virtual const char *FindFirstEx(
|
|
const char *pWildCard,
|
|
const char *pPathID,
|
|
FileFindHandle_t *pHandle
|
|
) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// File name and directory operations
|
|
//--------------------------------------------------------
|
|
|
|
// FIXME: This method is obsolete! Use RelativePathToFullPath instead!
|
|
// converts a partial path into a full path
|
|
// Prefer using the GetLocalPath_safe template wrapper to calling this directly
|
|
virtual const char *GetLocalPath( const char *pFileName, OUT_Z_CAP(maxLenInChars) char *pDest, int maxLenInChars ) = 0;
|
|
template <size_t maxLenInChars> const char *GetLocalPath_safe( const char *pFileName, OUT_Z_ARRAY char (&pDest)[maxLenInChars] )
|
|
{
|
|
return GetLocalPath( pFileName, pDest, (int)maxLenInChars );
|
|
}
|
|
|
|
// Returns true on success ( based on current list of search paths, otherwise false if
|
|
// it can't be resolved )
|
|
// Prefer using the FullPathToRelativePath_safe template wrapper to calling this directly
|
|
virtual bool FullPathToRelativePath( const char *pFullpath, OUT_Z_CAP(maxLenInChars) char *pDest, int maxLenInChars ) = 0;
|
|
template <size_t maxLenInChars> bool FullPathToRelativePath_safe( const char *pFullpath, OUT_Z_ARRAY char (&pDest)[maxLenInChars] )
|
|
{
|
|
return FullPathToRelativePath( pFullpath, pDest, (int)maxLenInChars );
|
|
}
|
|
|
|
// Gets the current working directory
|
|
virtual bool GetCurrentDirectory( char* pDirectory, int maxlen ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Filename dictionary operations
|
|
//--------------------------------------------------------
|
|
|
|
virtual FileNameHandle_t FindOrAddFileName( char const *pFileName ) = 0;
|
|
virtual bool String( const FileNameHandle_t& handle, char *buf, int buflen ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Asynchronous file operations
|
|
//--------------------------------------------------------
|
|
|
|
//------------------------------------
|
|
// Global operations
|
|
//------------------------------------
|
|
FSAsyncStatus_t AsyncRead( const FileAsyncRequest_t &request, FSAsyncControl_t *phControl = NULL ) { return AsyncReadMultiple( &request, 1, phControl ); }
|
|
virtual FSAsyncStatus_t AsyncReadMultiple( const FileAsyncRequest_t *pRequests, int nRequests, FSAsyncControl_t *phControls = NULL ) = 0;
|
|
virtual FSAsyncStatus_t AsyncAppend(const char *pFileName, const void *pSrc, int nSrcBytes, bool bFreeMemory, FSAsyncControl_t *pControl = NULL ) = 0;
|
|
virtual FSAsyncStatus_t AsyncAppendFile(const char *pAppendToFileName, const char *pAppendFromFileName, FSAsyncControl_t *pControl = NULL ) = 0;
|
|
virtual void AsyncFinishAll( int iToPriority = 0 ) = 0;
|
|
virtual void AsyncFinishAllWrites() = 0;
|
|
virtual FSAsyncStatus_t AsyncFlush() = 0;
|
|
virtual bool AsyncSuspend() = 0;
|
|
virtual bool AsyncResume() = 0;
|
|
|
|
/// Add async fetcher interface. This gives apps a hook to intercept async requests and
|
|
/// pull the data from a source of their choosing. The immediate use case is to load
|
|
/// assets from the CDN via HTTP.
|
|
virtual void AsyncAddFetcher( IAsyncFileFetch *pFetcher ) = 0;
|
|
virtual void AsyncRemoveFetcher( IAsyncFileFetch *pFetcher ) = 0;
|
|
|
|
//------------------------------------
|
|
// Functions to hold a file open if planning on doing mutiple reads. Use is optional,
|
|
// and is taken only as a hint
|
|
//------------------------------------
|
|
virtual FSAsyncStatus_t AsyncBeginRead( const char *pszFile, FSAsyncFile_t *phFile ) = 0;
|
|
virtual FSAsyncStatus_t AsyncEndRead( FSAsyncFile_t hFile ) = 0;
|
|
|
|
//------------------------------------
|
|
// Request management
|
|
//------------------------------------
|
|
virtual FSAsyncStatus_t AsyncFinish( FSAsyncControl_t hControl, bool wait = true ) = 0;
|
|
virtual FSAsyncStatus_t AsyncGetResult( FSAsyncControl_t hControl, void **ppData, int *pSize ) = 0;
|
|
virtual FSAsyncStatus_t AsyncAbort( FSAsyncControl_t hControl ) = 0;
|
|
virtual FSAsyncStatus_t AsyncStatus( FSAsyncControl_t hControl ) = 0;
|
|
// set a new priority for a file already in the queue
|
|
virtual FSAsyncStatus_t AsyncSetPriority(FSAsyncControl_t hControl, int newPriority) = 0;
|
|
virtual void AsyncAddRef( FSAsyncControl_t hControl ) = 0;
|
|
virtual void AsyncRelease( FSAsyncControl_t hControl ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Remote resource management
|
|
//--------------------------------------------------------
|
|
|
|
// starts waiting for resources to be available
|
|
// returns FILESYSTEM_INVALID_HANDLE if there is nothing to wait on
|
|
virtual WaitForResourcesHandle_t WaitForResources( const char *resourcelist ) = 0;
|
|
// get progress on waiting for resources; progress is a float [0, 1], complete is true on the waiting being done
|
|
// returns false if no progress is available
|
|
// any calls after complete is true or on an invalid handle will return false, 0.0f, true
|
|
virtual bool GetWaitForResourcesProgress( WaitForResourcesHandle_t handle, float *progress /* out */ , bool *complete /* out */ ) = 0;
|
|
// cancels a progress call
|
|
virtual void CancelWaitForResources( WaitForResourcesHandle_t handle ) = 0;
|
|
|
|
// hints that a set of files will be loaded in near future
|
|
// HintResourceNeed() is not to be confused with resource precaching.
|
|
virtual int HintResourceNeed( const char *hintlist, int forgetEverything ) = 0;
|
|
// returns true if a file is on disk
|
|
virtual bool IsFileImmediatelyAvailable(const char *pFileName) = 0;
|
|
|
|
// copies file out of pak/bsp/steam cache onto disk (to be accessible by third-party code)
|
|
virtual void GetLocalCopy( const char *pFileName ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Debugging operations
|
|
//--------------------------------------------------------
|
|
|
|
// Dump to printf/OutputDebugString the list of files that have not been closed
|
|
virtual void PrintOpenedFiles( void ) = 0;
|
|
virtual void PrintSearchPaths( void ) = 0;
|
|
|
|
// output
|
|
virtual void SetWarningFunc( void (*pfnWarning)( PRINTF_FORMAT_STRING const char *fmt, ... ) ) = 0;
|
|
virtual void SetWarningLevel( FileWarningLevel_t level ) = 0;
|
|
virtual void AddLoggingFunc( void (*pfnLogFunc)( const char *fileName, const char *accessType ) ) = 0;
|
|
virtual void RemoveLoggingFunc( FileSystemLoggingFunc_t logFunc ) = 0;
|
|
|
|
// Returns the file system statistics retreived by the implementation. Returns NULL if not supported.
|
|
virtual const FileSystemStatistics *GetFilesystemStatistics() = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Start of new functions after Lost Coast release (7/05)
|
|
//--------------------------------------------------------
|
|
|
|
virtual FileHandle_t OpenEx( const char *pFileName, const char *pOptions, unsigned flags = 0, const char *pathID = 0, char **ppszResolvedFilename = NULL ) = 0;
|
|
|
|
// Extended version of read provides more context to allow for more optimal reading
|
|
virtual int ReadEx( void* pOutput, int sizeDest, int size, FileHandle_t file ) = 0;
|
|
virtual int ReadFileEx( const char *pFileName, const char *pPath, void **ppBuf, bool bNullTerminate = false, bool bOptimalAlloc = false, int nMaxBytes = 0, int nStartingByte = 0, FSAllocFunc_t pfnAlloc = NULL ) = 0;
|
|
|
|
virtual FileNameHandle_t FindFileName( char const *pFileName ) = 0;
|
|
|
|
#if defined( TRACK_BLOCKING_IO )
|
|
virtual void EnableBlockingFileAccessTracking( bool state ) = 0;
|
|
virtual bool IsBlockingFileAccessEnabled() const = 0;
|
|
|
|
virtual IBlockingFileItemList *RetrieveBlockingFileAccessInfo() = 0;
|
|
#endif
|
|
|
|
virtual void SetupPreloadData() = 0;
|
|
virtual void DiscardPreloadData() = 0;
|
|
|
|
// Fixme, we could do these via a string embedded into the compiled data, etc...
|
|
enum KeyValuesPreloadType_t
|
|
{
|
|
TYPE_VMT,
|
|
TYPE_SOUNDEMITTER,
|
|
TYPE_SOUNDSCAPE,
|
|
NUM_PRELOAD_TYPES
|
|
};
|
|
|
|
virtual void LoadCompiledKeyValues( KeyValuesPreloadType_t type, char const *archiveFile ) = 0;
|
|
|
|
// If the "PreloadedData" hasn't been purged, then this'll try and instance the KeyValues using the fast path of compiled keyvalues loaded during startup.
|
|
// Otherwise, it'll just fall through to the regular KeyValues loading routines
|
|
virtual KeyValues *LoadKeyValues( KeyValuesPreloadType_t type, char const *filename, char const *pPathID = 0 ) = 0;
|
|
virtual bool LoadKeyValues( KeyValues& head, KeyValuesPreloadType_t type, char const *filename, char const *pPathID = 0 ) = 0;
|
|
virtual bool ExtractRootKeyName( KeyValuesPreloadType_t type, char *outbuf, size_t bufsize, char const *filename, char const *pPathID = 0 ) = 0;
|
|
|
|
virtual FSAsyncStatus_t AsyncWrite(const char *pFileName, const void *pSrc, int nSrcBytes, bool bFreeMemory, bool bAppend = false, FSAsyncControl_t *pControl = NULL ) = 0;
|
|
virtual FSAsyncStatus_t AsyncWriteFile(const char *pFileName, const CUtlBuffer *pSrc, int nSrcBytes, bool bFreeMemory, bool bAppend = false, FSAsyncControl_t *pControl = NULL ) = 0;
|
|
// Async read functions with memory blame
|
|
FSAsyncStatus_t AsyncReadCreditAlloc( const FileAsyncRequest_t &request, const char *pszFile, int line, FSAsyncControl_t *phControl = NULL ) { return AsyncReadMultipleCreditAlloc( &request, 1, pszFile, line, phControl ); }
|
|
virtual FSAsyncStatus_t AsyncReadMultipleCreditAlloc( const FileAsyncRequest_t *pRequests, int nRequests, const char *pszFile, int line, FSAsyncControl_t *phControls = NULL ) = 0;
|
|
|
|
virtual bool GetFileTypeForFullPath( char const *pFullPath, OUT_Z_BYTECAP(bufSizeInBytes) wchar_t *buf, size_t bufSizeInBytes ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
//--------------------------------------------------------
|
|
virtual bool ReadToBuffer( FileHandle_t hFile, CUtlBuffer &buf, int nMaxBytes = 0, FSAllocFunc_t pfnAlloc = NULL ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Optimal IO operations
|
|
//--------------------------------------------------------
|
|
virtual bool GetOptimalIOConstraints( FileHandle_t hFile, unsigned *pOffsetAlign, unsigned *pSizeAlign, unsigned *pBufferAlign ) = 0;
|
|
inline unsigned GetOptimalReadSize( FileHandle_t hFile, unsigned nLogicalSize );
|
|
virtual void *AllocOptimalReadBuffer( FileHandle_t hFile, unsigned nSize = 0, unsigned nOffset = 0 ) = 0;
|
|
virtual void FreeOptimalReadBuffer( void * ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
//
|
|
//--------------------------------------------------------
|
|
virtual void BeginMapAccess() = 0;
|
|
virtual void EndMapAccess() = 0;
|
|
|
|
// Returns true on success, otherwise false if it can't be resolved
|
|
// Prefer using the FullPathToRelativePathEx_safe template wrapper to calling this directly
|
|
virtual bool FullPathToRelativePathEx( const char *pFullpath, const char *pPathId, OUT_Z_CAP(maxLenInChars) char *pDest, int maxLenInChars ) = 0;
|
|
template <size_t maxLenInChars> bool FullPathToRelativePathEx_safe( const char *pFullpath, OUT_Z_ARRAY char (&pDest)[maxLenInChars] )
|
|
{
|
|
return FullPathToRelativePathEx( pFullpath, pDest, (int)maxLenInChars );
|
|
}
|
|
|
|
virtual int GetPathIndex( const FileNameHandle_t &handle ) = 0;
|
|
virtual long GetPathTime( const char *pPath, const char *pPathID ) = 0;
|
|
|
|
virtual DVDMode_t GetDVDMode() = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Whitelisting for pure servers.
|
|
//--------------------------------------------------------
|
|
|
|
// This should be called ONCE at startup. Multiplayer games (gameinfo.txt does not contain singleplayer_only)
|
|
// want to enable this so sv_pure works.
|
|
virtual void EnableWhitelistFileTracking( bool bEnable, bool bCacheAllVPKHashes, bool bRecalculateAndCheckHashes ) = 0;
|
|
|
|
// This is called when the client connects to a server using a pure_server_whitelist.txt file.
|
|
virtual void RegisterFileWhitelist( IPureServerWhitelist *pWhiteList, IFileList **pFilesToReload ) = 0;
|
|
|
|
// Called when the client logs onto a server. Any files that came off disk should be marked as
|
|
// unverified because this server may have a different set of files it wants to guarantee.
|
|
virtual void MarkAllCRCsUnverified() = 0;
|
|
|
|
// As the server loads whitelists when it transitions maps, it calls this to calculate CRCs for any files marked
|
|
// with check_crc. Then it calls CheckCachedFileCRC later when it gets client requests to verify CRCs.
|
|
virtual void CacheFileCRCs( const char *pPathname, ECacheCRCType eType, IFileList *pFilter ) = 0;
|
|
virtual EFileCRCStatus CheckCachedFileHash( const char *pPathID, const char *pRelativeFilename, int nFileFraction, FileHash_t *pFileHash ) = 0;
|
|
|
|
// Fills in the list of files that have been loaded off disk and have not been verified.
|
|
// Returns the number of files filled in (between 0 and nMaxFiles).
|
|
//
|
|
// This also removes any files it's returning from the unverified CRC list, so they won't be
|
|
// returned from here again.
|
|
// The client sends batches of these to the server to verify.
|
|
virtual int GetUnverifiedFileHashes( CUnverifiedFileHash *pFiles, int nMaxFiles ) = 0;
|
|
|
|
// Control debug message output.
|
|
// Pass a combination of WHITELIST_SPEW_ flags.
|
|
virtual int GetWhitelistSpewFlags() = 0;
|
|
virtual void SetWhitelistSpewFlags( int flags ) = 0;
|
|
|
|
// Installs a callback used to display a dirty disk dialog
|
|
virtual void InstallDirtyDiskReportFunc( FSDirtyDiskReportFunc_t func ) = 0;
|
|
|
|
//--------------------------------------------------------
|
|
// Low-level file caching. Cached files are loaded into memory and used
|
|
// to satisfy read requests (sync and async) until the cache is destroyed.
|
|
// NOTE: this could defeat file whitelisting, if a file were loaded in
|
|
// a non-whitelisted environment and then reused. Clients should not cache
|
|
// files across moves between pure/non-pure environments.
|
|
//--------------------------------------------------------
|
|
virtual FileCacheHandle_t CreateFileCache() = 0;
|
|
virtual void AddFilesToFileCache( FileCacheHandle_t cacheId, const char **ppFileNames, int nFileNames, const char *pPathID ) = 0;
|
|
virtual bool IsFileCacheFileLoaded( FileCacheHandle_t cacheId, const char* pFileName ) = 0;
|
|
virtual bool IsFileCacheLoaded( FileCacheHandle_t cacheId ) = 0;
|
|
virtual void DestroyFileCache( FileCacheHandle_t cacheId ) = 0;
|
|
|
|
// XXX For now, we assume that all path IDs are "GAME", never cache files
|
|
// outside of the game search path, and preferentially return those files
|
|
// whenever anyone searches for a match even if an on-disk file in another
|
|
// folder would have been found first in a traditional search. extending
|
|
// the memory cache to cover non-game files isn't necessary right now, but
|
|
// should just be a matter of defining a more complex key type. (henryg)
|
|
|
|
// Register a CMemoryFileBacking; must balance with UnregisterMemoryFile.
|
|
// Returns false and outputs an ref-bumped pointer to the existing entry
|
|
// if the same file has already been registered by someone else; this must
|
|
// be Unregistered to maintain the balance.
|
|
virtual bool RegisterMemoryFile( CMemoryFileBacking *pFile, CMemoryFileBacking **ppExistingFileWithRef ) = 0;
|
|
|
|
// Unregister a CMemoryFileBacking; must balance with RegisterMemoryFile.
|
|
virtual void UnregisterMemoryFile( CMemoryFileBacking *pFile ) = 0;
|
|
|
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virtual void CacheAllVPKFileHashes( bool bCacheAllVPKHashes, bool bRecalculateAndCheckHashes ) = 0;
|
|
virtual bool CheckVPKFileHash( int PackFileID, int nPackFileNumber, int nFileFraction, MD5Value_t &md5Value ) = 0;
|
|
|
|
// Called when we unload a file, to remove that file's info for pure server purposes.
|
|
virtual void NotifyFileUnloaded( const char *pszFilename, const char *pPathId ) = 0;
|
|
|
|
// Returns true on successfully retrieve case-sensitive full path, otherwise false
|
|
// Prefer using the GetCaseCorrectFullPath template wrapper to calling this directly
|
|
virtual bool GetCaseCorrectFullPath_Ptr( const char *pFullPath, OUT_Z_CAP( maxLenInChars ) char *pDest, int maxLenInChars ) = 0;
|
|
template <size_t maxLenInChars> bool GetCaseCorrectFullPath( const char *pFullPath, OUT_Z_ARRAY char( &pDest )[maxLenInChars] )
|
|
{
|
|
return GetCaseCorrectFullPath_Ptr( pFullPath, pDest, (int)maxLenInChars );
|
|
}
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Memory file backing, which you can use to fake out the filesystem, caching data
|
|
// in memory and have it associated with a file
|
|
//-----------------------------------------------------------------------------
|
|
class CMemoryFileBacking : public CRefCounted<CRefCountServiceMT>
|
|
{
|
|
public:
|
|
// malloc and free in headers with our janky memdbg system. What could go wrong. Except everything.
|
|
// (this free can't skip memdbg if paired malloc used memdbg)
|
|
#include <memdbgon.h>
|
|
CMemoryFileBacking( IFileSystem* pFS ) : m_pFS( pFS ), m_nRegistered( 0 ), m_pFileName( NULL ), m_pData( NULL ), m_nLength( 0 ) { }
|
|
~CMemoryFileBacking() { free( (char*) m_pFileName ); if ( m_pData ) m_pFS->FreeOptimalReadBuffer( (char*) m_pData ); }
|
|
#include <memdbgoff.h>
|
|
|
|
IFileSystem* m_pFS;
|
|
int m_nRegistered;
|
|
const char* m_pFileName;
|
|
const char* m_pData;
|
|
int m_nLength;
|
|
|
|
private:
|
|
CMemoryFileBacking( const CMemoryFileBacking& ); // not defined
|
|
CMemoryFileBacking& operator=( const CMemoryFileBacking& ); // not defined
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#if defined( _X360 ) && !defined( _RETAIL )
|
|
extern char g_szXboxProfileLastFileOpened[MAX_PATH];
|
|
#define SetLastProfileFileRead( s ) Q_strncpy( g_szXboxProfileLastFileOpened, sizeof( g_szXboxProfileLastFileOpened), pFileName )
|
|
#define GetLastProfileFileRead() (&g_szXboxProfileLastFileOpened[0])
|
|
#else
|
|
#define SetLastProfileFileRead( s ) ((void)0)
|
|
#define GetLastProfileFileRead() NULL
|
|
#endif
|
|
|
|
#if defined( _X360 ) && defined( _BASETSD_H_ )
|
|
class CXboxDiskCacheSetter
|
|
{
|
|
public:
|
|
CXboxDiskCacheSetter( SIZE_T newSize )
|
|
{
|
|
m_oldSize = XGetFileCacheSize();
|
|
XSetFileCacheSize( newSize );
|
|
}
|
|
|
|
~CXboxDiskCacheSetter()
|
|
{
|
|
XSetFileCacheSize( m_oldSize );
|
|
}
|
|
private:
|
|
SIZE_T m_oldSize;
|
|
};
|
|
#define DISK_INTENSIVE() CXboxDiskCacheSetter cacheSetter( 1024*1024 )
|
|
#else
|
|
#define DISK_INTENSIVE() ((void)0)
|
|
#endif
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
inline unsigned IFileSystem::GetOptimalReadSize( FileHandle_t hFile, unsigned nLogicalSize )
|
|
{
|
|
unsigned align;
|
|
if ( GetOptimalIOConstraints( hFile, &align, NULL, NULL ) )
|
|
return AlignValue( nLogicalSize, align );
|
|
else
|
|
return nLogicalSize;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
// We include this here so it'll catch compile errors in VMPI early.
|
|
#include "filesystem_passthru.h"
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Async memory tracking
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#if (defined(_DEBUG) || defined(USE_MEM_DEBUG))
|
|
#define AsyncRead( a, b ) AsyncReadCreditAlloc( a, __FILE__, __LINE__, b )
|
|
#define AsyncReadMutiple( a, b, c ) AsyncReadMultipleCreditAlloc( a, b, __FILE__, __LINE__, c )
|
|
#endif
|
|
|
|
extern IFileSystem *g_pFullFileSystem;
|
|
|
|
#endif // FILESYSTEM_H
|