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Added a replacement for utime(), because it has the same DST bug as stat().

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git-svn-id: svn://svn.cc65.org/cc65/trunk@5637 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2012-04-03 13:01:56 +00:00
parent b833c6c8c5
commit a0c6ae2c62
4 changed files with 231 additions and 1 deletions
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155
src/common/filetime.c Normal file
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@ -0,0 +1,155 @@
/*****************************************************************************/
/* */
/* filetime.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. The problem described here:
* http://www.codeproject.com/KB/datetime/dstbugs.aspx
* is also true when setting file times via utime(), so we need a
* replacement
*/
#if defined(__WATCOMC__) && defined(__NT__)
#define BUGGY_OS 1
#include <errno.h>
#include <windows.h>
#else
#if defined(__WATCOMC__) || defined(_MSC_VER) || defined(__MINGW32__)
/* The Windows compilers have the file in the wrong directory */
# include <sys/utime.h>
#else
# include <sys/types.h> /* FreeBSD needs this */
# include <utime.h>
#endif
#endif
/* common */
#include "filetime.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
#if defined(BUGGY_OS)
static FILETIME* UnixTimeToFileTime (time_t T, FILETIME* FT)
/* Calculate a FILETIME value from a time_t. 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, 0x00000020UL };
ULARGE_INTEGER V;
V.QuadPart = (unsigned __int64) T * 10000000U + Offs.QuadPart;
FT->dwLowDateTime = V.LowPart;
FT->dwHighDateTime = V.HighPart;
return FT;
}
int SetFileTimes (const char* Path, time_t T)
/* Set the time of last modification and the time of last access of a file to
* the given time T. This calls utime() for system where it works, and applies
* workarounds for all others (which in fact means "WINDOWS").
*/
{
HANDLE H;
FILETIME FileTime;
int Error = EACCES; /* Assume an error */
/* Open the file */
H = CreateFile (Path,
GENERIC_WRITE,
FILE_SHARE_READ,
0, /* Security attributes */
OPEN_EXISTING,
0, /* File flags */
0); /* Template file */
if (H != INVALID_HANDLE_VALUE) {
/* Set access and modification time */
UnixTimeToFileTime (T, &FileTime);
if (SetFileTime (H, 0, &FileTime, &FileTime)) {
/* Done */
Error = 0;
}
/* Close the handle */
(void) CloseHandle (H);
}
/* Return the error code */
return Error;
}
#else
int SetFileTimes (const char* Path, time_t T)
/* Set the time of last modification and the time of last access of a file to
* the given time T. This calls utime() for system where it works, and applies
* workarounds for all others (which in fact means "WINDOWS").
*/
{
struct utimbuf U;
/* Set access and modification time */
U.actime = T;
U.modtime = T;
return utime (Path, &U);
}
#endif

73
src/common/filetime.h Normal file
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@ -0,0 +1,73 @@
/*****************************************************************************/
/* */
/* filetime.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. The problem described here:
* http://www.codeproject.com/KB/datetime/dstbugs.aspx
* is also true when setting file times via utime(), so we need a
* replacement
*/
#ifndef FILETIME_H
#define FILETIME_H
#include <time.h>
/*****************************************************************************/
/* Code */
/*****************************************************************************/
int SetFileTimes (const char* Path, time_t T);
/* Set the time of last modification and the time of last access of a file to
* the given time T. This calls utime() for system where it works, and applies
* workarounds for all others (which in fact means "WINDOWS").
*/
/* End of filestat.h */
#endif

3
src/common/make/gcc.mak
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@ -26,8 +26,9 @@ OBJS = abend.o \
debugflag.o \
exprdefs.o \
fileid.o \
filepos.o \
filepos.o \
filestat.o \
filetime.o \
filetype.o \
fname.o \
fp.o \

1
src/common/make/watcom.mak
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@ -70,6 +70,7 @@ OBJS = abend.obj \
fileid.obj \
filepos.obj \
filestat.obj \
filetime.obj \
filetype.obj \
fname.obj \
fp.obj \