diff options
Diffstat (limited to 'lib/raidfile/RaidFileWrite.cpp')
| -rw-r--r-- | lib/raidfile/RaidFileWrite.cpp | 74 |
1 files changed, 63 insertions, 11 deletions
diff --git a/lib/raidfile/RaidFileWrite.cpp b/lib/raidfile/RaidFileWrite.cpp index 1e2440b9..04a7995c 100644 --- a/lib/raidfile/RaidFileWrite.cpp +++ b/lib/raidfile/RaidFileWrite.cpp @@ -1,4 +1,4 @@ -// distribution boxbackup-0.10 (svn version: 494) +// distribution boxbackup-0.11rc1 (svn version: 2023_2024) // // Copyright (c) 2003 - 2006 // Ben Summers and contributors. All rights reserved. @@ -73,6 +73,9 @@ // Must have this number of discs in the set #define TRANSFORM_NUMBER_DISCS_REQUIRED 3 +// we want to use POSIX fstat() for now, not the emulated one +#undef fstat + // -------------------------------------------------------------------------- // // Function @@ -142,7 +145,8 @@ void RaidFileWrite::Open(bool AllowOverwrite) writeFilename += 'X'; // Attempt to open - mOSFileHandle = ::open(writeFilename.c_str(), O_WRONLY | O_CREAT, + mOSFileHandle = ::open(writeFilename.c_str(), + O_WRONLY | O_CREAT | O_BINARY, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); if(mOSFileHandle == -1) { @@ -153,7 +157,7 @@ void RaidFileWrite::Open(bool AllowOverwrite) #ifdef HAVE_FLOCK int errnoBlock = EWOULDBLOCK; if(::flock(mOSFileHandle, LOCK_EX | LOCK_NB) != 0) -#else +#elif HAVE_DECL_F_SETLK int errnoBlock = EAGAIN; struct flock desc; desc.l_type = F_WRLCK; @@ -161,6 +165,9 @@ void RaidFileWrite::Open(bool AllowOverwrite) desc.l_start = 0; desc.l_len = 0; if(::fcntl(mOSFileHandle, F_SETLK, &desc) != 0) +#else + int errnoBlock = ENOSYS; + if (0) #endif { // Lock was not obtained. @@ -280,23 +287,46 @@ void RaidFileWrite::Commit(bool ConvertToRaidNow) } // Rename it into place -- BEFORE it's closed so lock remains + +#ifdef WIN32 + // Except on Win32 which doesn't allow renaming open files + // Close file... + if(::close(mOSFileHandle) != 0) + { + THROW_EXCEPTION(RaidFileException, OSError) + } + mOSFileHandle = -1; +#endif // WIN32 + RaidFileController &rcontroller(RaidFileController::GetController()); RaidFileDiscSet rdiscSet(rcontroller.GetDiscSet(mSetNumber)); // Get the filename for the write file std::string renameTo(RaidFileUtil::MakeWriteFileName(rdiscSet, mFilename)); // And the current name std::string renameFrom(renameTo + 'X'); + +#ifdef WIN32 + // need to delete the target first + if(::unlink(renameTo.c_str()) != 0 && + GetLastError() != ERROR_FILE_NOT_FOUND) + { + THROW_EXCEPTION(RaidFileException, OSError) + } +#endif + if(::rename(renameFrom.c_str(), renameTo.c_str()) != 0) { THROW_EXCEPTION(RaidFileException, OSError) } +#ifndef WIN32 // Close file... if(::close(mOSFileHandle) != 0) { THROW_EXCEPTION(RaidFileException, OSError) } mOSFileHandle = -1; +#endif // !WIN32 // Raid it? if(ConvertToRaidNow) @@ -330,8 +360,15 @@ void RaidFileWrite::Discard() writeFilename += 'X'; // Unlink and close it - if((::unlink(writeFilename.c_str()) != 0) - || (::close(mOSFileHandle) != 0)) + +#ifdef WIN32 + // On Win32 we must close it first + if (::close(mOSFileHandle) != 0 || + ::unlink(writeFilename.c_str()) != 0) +#else // !WIN32 + if (::unlink(writeFilename.c_str()) != 0 || + ::close(mOSFileHandle) != 0) +#endif // !WIN32 { THROW_EXCEPTION(RaidFileException, OSError) } @@ -426,13 +463,13 @@ void RaidFileWrite::TransformToRaidStorage() try { #if HAVE_DECL_O_EXLOCK - FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK)> stripe1(stripe1FilenameW.c_str()); - FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK)> stripe2(stripe2FilenameW.c_str()); - FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK)> parity(parityFilenameW.c_str()); + FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK | O_BINARY)> stripe1(stripe1FilenameW.c_str()); + FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK | O_BINARY)> stripe2(stripe2FilenameW.c_str()); + FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK | O_BINARY)> parity(parityFilenameW.c_str()); #else - FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL)> stripe1(stripe1FilenameW.c_str()); - FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL)> stripe2(stripe2FilenameW.c_str()); - FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL)> parity(parityFilenameW.c_str()); + FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_BINARY)> stripe1(stripe1FilenameW.c_str()); + FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_BINARY)> stripe2(stripe2FilenameW.c_str()); + FileHandleGuard<(O_WRONLY | O_CREAT | O_EXCL | O_BINARY)> parity(parityFilenameW.c_str()); #endif // Then... read in data... @@ -568,6 +605,21 @@ void RaidFileWrite::TransformToRaidStorage() parity.Close(); stripe2.Close(); stripe1.Close(); + +#ifdef WIN32 + // Must delete before renaming + #define CHECK_UNLINK(file) \ + { \ + if (::unlink(file) != 0 && errno != ENOENT) \ + { \ + THROW_EXCEPTION(RaidFileException, OSError); \ + } \ + } + CHECK_UNLINK(stripe1Filename.c_str()); + CHECK_UNLINK(stripe2Filename.c_str()); + CHECK_UNLINK(parityFilename.c_str()); + #undef CHECK_UNLINK +#endif // Rename them into place if(::rename(stripe1FilenameW.c_str(), stripe1Filename.c_str()) != 0 |