mirror of
https://gitlab.uni-freiburg.de/opensourcevdi/win32-vd_agent
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78099ae2bf
Signed-off-by: Frediano Ziglio <fziglio@redhat.com> Acked-by: Christophe Fergeau <cfergeau@redhat.com>
88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
/*
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Copyright (C) 2009 Red Hat, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "vdcommon.h"
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#include "vdlog.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <share.h>
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#include <vector>
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#define LOG_ROLL_SIZE (1024 * 1024)
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VDLog* VDLog::_log = NULL;
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VDLog::VDLog(FILE* handle)
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: _handle(handle)
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{
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_log = this;
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}
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VDLog::~VDLog()
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{
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if (_log && _handle) {
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fclose(_handle);
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_log = NULL;
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}
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}
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VDLog* VDLog::get(TCHAR* path)
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{
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if (_log || !path) {
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return _log;
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}
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DWORD size = 0;
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HANDLE file = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
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NULL);
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if (file != INVALID_HANDLE_VALUE) {
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size = GetFileSize(file, NULL);
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CloseHandle(file);
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}
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if (size != INVALID_FILE_SIZE && size > LOG_ROLL_SIZE) {
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TCHAR roll_path[MAX_PATH];
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swprintf_s(roll_path, MAX_PATH, L"%s.1", path);
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if (!MoveFileEx(path, roll_path, MOVEFILE_REPLACE_EXISTING)) {
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return NULL;
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}
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}
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FILE* handle = _wfsopen(path, L"a+", _SH_DENYNO);
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if (!handle) {
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return NULL;
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}
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_log = new VDLog(handle);
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return _log;
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}
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void VDLog::printf(const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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vfprintf(_handle, format, args);
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va_end(args);
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fflush(_handle);
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}
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void log_version()
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{
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// print same version as resource one
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// RC_PRODUCTVERSION contains 4 numbers separated by commas (resource
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// version information source format).
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vd_printf("%u.%u.%u.%u", RC_PRODUCTVERSION);
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}
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