--- /dev/null
+/*****************************************************************************/
+/* */
+/* filestat.c */
+/* */
+/* Replacement for buggy Microsoft code */
+/* */
+/* */
+/* */
+/* (C) 2012, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
+/* */
+/* */
+/* This software is provided 'as-is', without any expressed or implied */
+/* warranty. In no event will the authors be held liable for any damages */
+/* arising from the use of this software. */
+/* */
+/* Permission is granted to anyone to use this software for any purpose, */
+/* including commercial applications, and to alter it and redistribute it */
+/* freely, subject to the following restrictions: */
+/* */
+/* 1. The origin of this software must not be misrepresented; you must not */
+/* claim that you wrote the original software. If you use this software */
+/* in a product, an acknowledgment in the product documentation would be */
+/* appreciated but is not required. */
+/* 2. Altered source versions must be plainly marked as such, and must not */
+/* be misrepresented as being the original software. */
+/* 3. This notice may not be removed or altered from any source */
+/* distribution. */
+/* */
+/*****************************************************************************/
+
+
+
+/* This module works around bugs in the time conversion code supplied by
+ * Microsoft. See here for a description of the problem:
+ * http://www.codeproject.com/KB/datetime/dstbugs.aspx
+ * Please let me note that I find it absolutely unacceptable to just declare
+ * buggy behaviour like this "works as designed" as Microsoft does. The
+ * problems did even make it into .NET, where the DateTime builtin data type
+ * has exactly the same problems as described in the article above.
+ */
+
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#if defined(__WATCOMC__) && defined(__NT__)
+#define BUGGY_OS 1
+#include <errno.h>
+#include <windows.h>
+#endif
+
+
+
+/*****************************************************************************/
+/* Code */
+/*****************************************************************************/
+
+
+
+#if defined(BUGGY_OS)
+
+
+
+static time_t FileTimeToUnixTime (const FILETIME* T)
+/* Calculate a unix time_t value from a FILETIME. FILETIME contains a 64 bit
+ * value with point zero at 1600-01-01 00:00:00 and counting 100ns intervals.
+ * time_t is in seconds since 1970-01-01 00:00:00.
+ */
+{
+ /* Offset between 1600-01-01 and the Epoch in seconds. Watcom C has no
+ * way to express a number > 32 bit (known to me) but is able to do
+ * calculations with 64 bit integers, so we need to do it this way.
+ */
+ static const ULARGE_INTEGER Offs = { 0xB6109100UL, 0x20000000UL };
+ ULARGE_INTEGER V;
+ V.LowPart = T->dwLowDateTime;
+ V.HighPart = T->dwHighDateTime;
+ return (V.QuadPart / 10000000U) - Offs.QuadPart;
+}
+
+
+
+int FileStat (const char* Path, struct stat* Buf)
+/* Replacement function for stat() */
+{
+
+ HANDLE H;
+ BY_HANDLE_FILE_INFORMATION Info;
+
+ /* First call stat() */
+ int Error = stat (Path, Buf);
+ if (Error != 0) {
+ return Error;
+ }
+
+ /* Open the file using backup semantics, so we won't change atime. Then
+ * retrieve the correct times in UTC and replace the ones in Buf. Return
+ * EACCES in case of errors to avoid the hassle of translating windows
+ * error codes to standard ones.
+ */
+ H = CreateFile (Path,
+ GENERIC_READ,
+ FILE_SHARE_READ,
+ 0, /* Security attributes */
+ OPEN_EXISTING,
+ FILE_FLAG_BACKUP_SEMANTICS,
+ 0); /* Template file */
+ if (H != INVALID_HANDLE_VALUE) {
+ if (GetFileInformationByHandle (H, &Info)) {
+ Buf->st_ctime = FileTimeToUnixTime (&Info.ftCreationTime);
+ Buf->st_atime = FileTimeToUnixTime (&Info.ftLastAccessTime);
+ Buf->st_mtime = FileTimeToUnixTime (&Info.ftLastWriteTime);
+ } else {
+ Error = EACCES;
+ }
+ CloseHandle (H);
+ } else {
+ Error = EACCES;
+ }
+
+ /* Done */
+ return Error;
+}
+
+
+
+#else
+
+
+
+int FileStat (const char* Path, struct stat* Buf)
+/* Replacement function for stat() */
+{
+ /* Just call the function which works without errors */
+ return stat (Path, Buf);
+}
+
+
+
+#endif
--- /dev/null
+/*****************************************************************************/
+/* */
+/* filestat.h */
+/* */
+/* Replacement for buggy Microsoft code */
+/* */
+/* */
+/* */
+/* (C) 2012, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
+/* */
+/* */
+/* This software is provided 'as-is', without any expressed or implied */
+/* warranty. In no event will the authors be held liable for any damages */
+/* arising from the use of this software. */
+/* */
+/* Permission is granted to anyone to use this software for any purpose, */
+/* including commercial applications, and to alter it and redistribute it */
+/* freely, subject to the following restrictions: */
+/* */
+/* 1. The origin of this software must not be misrepresented; you must not */
+/* claim that you wrote the original software. If you use this software */
+/* in a product, an acknowledgment in the product documentation would be */
+/* appreciated but is not required. */
+/* 2. Altered source versions must be plainly marked as such, and must not */
+/* be misrepresented as being the original software. */
+/* 3. This notice may not be removed or altered from any source */
+/* distribution. */
+/* */
+/*****************************************************************************/
+
+
+
+/* This module works around bugs in the time conversion code supplied by
+ * Microsoft. See here for a description of the problem:
+ * http://www.codeproject.com/KB/datetime/dstbugs.aspx
+ * Please let me note that I find it absolutely unacceptable to just declare
+ * buggy behaviour like this "works as designed" as Microsoft does. The
+ * problems did even make it into .NET, where the DateTime builtin data type
+ * has exactly the same problems as described in the article above.
+ */
+
+
+
+#ifndef FILESTAT_H
+#define FILESTAT_H
+
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+
+/*****************************************************************************/
+/* Code */
+/*****************************************************************************/
+
+
+
+int FileStat (const char* Path, struct stat* Buf);
+/* Replacement function for stat() */
+
+
+
+/* End of filestat.h */
+
+#endif
+
+
+
projects / cc65 / commitdiff