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File: [Pegasus] / pegasus / src / Pegasus / Common / TraceFileHandlerPOSIX.cpp
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Revision: 1.19.10.2, Sat Jan 12 06:32:50 2013 UTC (11 years, 5 months ago) by ashok.pathak Branch: RELEASE_2_12-branch CVS Tags: RELEASE_2_12_1-RC1, RELEASE_2_12_1 Changes since 1.19.10.1: +5 -8 lines BUG#: 9513 TITLE:The memory allocated by strdup is not large enough when the the trace file name roll over DESCRIPTION: |
//%LICENSE//////////////////////////////////////////////////////////////// // // Licensed to The Open Group (TOG) under one or more contributor license // agreements. Refer to the OpenPegasusNOTICE.txt file distributed with // this work for additional information regarding copyright ownership. // Each contributor licenses this file to you under the OpenPegasus Open // Source License; you may not use this file except in compliance with the // License. // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included // in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // ////////////////////////////////////////////////////////////////////////// // //%///////////////////////////////////////////////////////////////////////////// #if defined(PEGASUS_OS_VMS) # include <fcntl.h> #endif #include <Pegasus/Common/System.h> #include <Pegasus/Common/TraceFileHandler.h> #include <Pegasus/Common/Mutex.h> #include <Pegasus/Common/StringConversion.h> PEGASUS_USING_STD; PEGASUS_NAMESPACE_BEGIN static Mutex writeMutex; PEGASUS_FORK_SAFE_MUTEX(writeMutex) /////////////////////////////////////////////////////////////////////////////// // Writes message to file. Locks the file before writing to it // Implementation of this function is platform specific /////////////////////////////////////////////////////////////////////////////// void TraceFileHandler::prepareFileHandle(void) { // If the file has been deleted, re-open it and continue if (!System::exists(_fileName)) { fclose(_fileHandle); _fileHandle = _openFile(_fileName); if (!_fileHandle) { return; } } // Got the Lock on the File. Seek to the end of File fseek(_fileHandle, 0, SEEK_END); # ifdef PEGASUS_PLATFORM_LINUX_GENERIC_GNU long pos = ftell(_fileHandle); // Check if the file size is approaching 2GB - which is the // maximum size a file on 32 bit Linux can grow (ofcourse if // not using large-files option). If this is not checked, the // cimserver may get a SIGXFSZ signal and shutdown. See Bug#1527. if (pos >= 0x7ff00000) { // If the file size is almost 2 GB in size, close this trace // file and open a new trace file which would have _fileCount // as the suffix. So, if "cimserver.trc" is the trace file that // approaches 2GB, the next file which gets created would be // named "cimserver.trc.1" and so on ... fclose(_fileHandle); char buf[1024]; sprintf(buf, "%s.%u", _baseFileName, ++_fileCount); //Holds current trace file name for rolling back in case of failure char lastTraceFileName [strlen(_fileName) +1 ]; memset(lastTraceFileName,0x00,sizeof(lastTraceFileName)); strcpy (lastTraceFileName, _fileName) ; free(_fileName); _fileName = 0; // 1 extra bytes for trailling NUL _fileName = (char*)malloc(strlen(buf) + 1 ); if(_fileName) { sprintf(_fileName, "%s.%u", _baseFileName, _fileCount); _fileHandle = _openFile(_fileName); if (!_fileHandle) { //error handling done by _openFile free (_fileName); _fileName = 0; //roll back to old trace file name for retest _fileName = strdup(lastTraceFileName); _fileCount--; return; } } else { _fileName = strdup(lastTraceFileName); throw PEGASUS_STD(bad_alloc)(); } } # endif } void TraceFileHandler::handleMessage( const char *message, Uint32 msgLen, const char *fmt, va_list argList) { if (_configHasChanged) { _reConfigure(); } if (!_fileHandle) { // The trace file is not open, which means an earlier fopen() was // unsuccessful. Stop now to avoid logging duplicate error messages. return; } // Do not add Trace calls in the Critical section // ---- BEGIN CRITICAL SECTION AutoMutex writeLock(writeMutex); prepareFileHandle(); // Write the message to the file fprintf(_fileHandle, "%s", message); vfprintf(_fileHandle, fmt, argList); fprintf(_fileHandle, "\n"); #if defined(PEGASUS_OS_VMS) if (0 == fsync(fileno(_fileHandle))) #else if (0 == fflush(_fileHandle)) #endif { // trace message successful written, reset error log messages // thus allow writing of errors to log again _logErrorBitField = 0; } // ---- END CRITICAL SECTION } void TraceFileHandler::handleMessage(const char *message, Uint32 msgLen) { if (_configHasChanged) { _reConfigure(); } if (!_fileHandle) { // The trace file is not open, which means an earlier fopen() was // unsuccessful. Stop now to avoid logging duplicate error messages. return; } // Do not add Trace calls in the Critical section // ---- BEGIN CRITICAL SECTION AutoMutex writeLock(writeMutex); prepareFileHandle(); // Write the message to the file fprintf(_fileHandle, "%s\n", message); #if defined(PEGASUS_OS_VMS) if (0 == fsync(fileno(_fileHandle))) #else if (0 == fflush(_fileHandle)) #endif { // trace message successful written, reset error log messages // thus allow writing of errors to log again _logErrorBitField = 0; } // ---- END CRITICAL SECTION } PEGASUS_NAMESPACE_END
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