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Annotation of truecrypt/platform/filecommon.cpp, revision 1.1.1.1

1.1       root        1: /*
                      2:  Copyright (c) 2008 TrueCrypt Foundation. All rights reserved.
                      3: 
                      4:  Governed by the TrueCrypt License 2.4 the full text of which is contained
                      5:  in the file License.txt included in TrueCrypt binary and source code
                      6:  distribution packages.
                      7: */
                      8: 
                      9: #include "File.h"
                     10: #ifdef TC_UNIX
                     11: #include <sys/types.h>
                     12: #include <sys/stat.h>
                     13: #include <unistd.h>
                     14: #include <utime.h>
                     15: #endif
                     16: 
                     17: namespace TrueCrypt
                     18: {
                     19:        File::~File ()
                     20:        {
                     21:                if (FileIsOpen)
                     22:                        Close();
                     23:        }
                     24: 
                     25:        void File::Copy (const FilePath &sourcePath, const FilePath &destinationPath, bool preserveTimestamps)
                     26:        {
                     27:                File source;
                     28:                source.Open (sourcePath);
                     29: 
                     30:                File destination;
                     31:                destination.Open (destinationPath, CreateWrite);
                     32: 
                     33:                SecureBuffer buffer (OptimalReadSize);
                     34:                uint64 len;
                     35: 
                     36:                while ((len = source.Read (buffer)) > 0)
                     37:                {
                     38:                        destination.Write (buffer, static_cast <size_t> (len));
                     39:                }
                     40: 
                     41:                if (preserveTimestamps)
                     42:                {
                     43:                        destination.Flush();
                     44: #ifndef TC_WINDOWS
                     45:                        struct stat statData;
                     46:                        throw_sys_sub_if (stat (string (sourcePath).c_str(), &statData) == -1, wstring (sourcePath));
                     47: 
                     48:                        struct utimbuf u;
                     49:                        u.actime = statData.st_atime;
                     50:                        u.modtime = statData.st_mtime;
                     51:                        throw_sys_sub_if (utime (string (destinationPath).c_str(), &u) == -1, wstring (destinationPath));
                     52: #endif
                     53:                }
                     54:        }
                     55:        
                     56:        FilePath File::GetPath () const
                     57:        {
                     58:                if_debug (ValidateState());
                     59:                return Path;
                     60:        }
                     61: 
                     62:        void File::ReadCompleteBuffer (const BufferPtr &buffer) const
                     63:        {
                     64:                size_t dataLeft = buffer.Size();
                     65:                size_t offset = 0;
                     66: 
                     67:                while (dataLeft > 0)
                     68:                {
                     69:                        size_t dataRead = static_cast <size_t> (Read (buffer.GetRange (offset, dataLeft)));
                     70:                        if (dataRead == 0)
                     71:                                throw InsufficientData (SRC_POS);
                     72: 
                     73:                        dataLeft -= dataRead;
                     74:                        offset += dataRead;
                     75:                }
                     76:        }
                     77:        
                     78:        void File::ValidateState () const
                     79:        {
                     80:                if (!FileIsOpen)
                     81:                        throw NotInitialized (SRC_POS);
                     82:        }
                     83: }

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