174 lines
4.8 KiB
C
174 lines
4.8 KiB
C
/***
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*utime64.c - set modification time for a file
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*
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* Copyright (c) 1998-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Sets the access/modification times for a file.
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*
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*Revision History:
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* 05-28-98 GJF Created.
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*
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*******************************************************************************/
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#ifndef _POSIX_
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#include <cruntime.h>
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#include <sys/types.h>
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#include <sys/utime.h>
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#include <msdos.h>
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#include <time.h>
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#include <fcntl.h>
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#include <io.h>
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#include <dos.h>
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#include <oscalls.h>
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#include <errno.h>
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#include <stddef.h>
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#include <internal.h>
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#include <stdio.h>
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#include <tchar.h>
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/***
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*int _utime64(pathname, time) - set modification time for file
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*
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*Purpose:
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* Sets the modification time for the file specified by pathname.
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* Only the modification time from the _utimbuf structure is used
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* under MS-DOS.
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*
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*Entry:
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* struct __utimbuf64 *time - new modification date
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*
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*Exit:
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* returns 0 if successful
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* returns -1 and sets errno if fails
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*
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*Exceptions:
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*
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*******************************************************************************/
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int __cdecl _tutime64 (
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const _TSCHAR *fname,
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struct __utimbuf64 *times
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)
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{
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int fh;
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int retval;
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/* open file, fname, since filedate system call needs a handle. Note
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* _utime definition says you must have write permission for the file
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* to change its time, so open file for write only. Also, must force
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* it to open in binary mode so we dont remove ^Z's from binary files.
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*/
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if ((fh = _topen(fname, _O_RDWR | _O_BINARY)) < 0)
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return(-1);
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retval = _futime64(fh, times);
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_close(fh);
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return(retval);
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}
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#ifndef _UNICODE
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/***
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*int __futime64(fh, time) - set modification time for open file
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*
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*Purpose:
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* Sets the modification time for the open file specified by fh.
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* Only the modification time from the _utimbuf64 structure is used
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* under MS-DOS.
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*
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*Entry:
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* struct __utimbuf64 *time - new modification date
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*
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*Exit:
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* returns 0 if successful
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* returns -1 and sets errno if fails
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*
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*Exceptions:
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*
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*******************************************************************************/
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int __cdecl _futime64 (
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int fh,
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struct __utimbuf64 *times
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)
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{
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struct tm *tmb;
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SYSTEMTIME SystemTime;
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FILETIME LocalFileTime;
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FILETIME LastWriteTime;
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FILETIME LastAccessTime;
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struct __utimbuf64 deftimes;
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if (times == NULL) {
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_time64(&deftimes.modtime);
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deftimes.actime = deftimes.modtime;
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times = &deftimes;
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}
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if ((tmb = _localtime64(×->modtime)) == NULL) {
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errno = EINVAL;
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return(-1);
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}
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SystemTime.wYear = (WORD)(tmb->tm_year + 1900);
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SystemTime.wMonth = (WORD)(tmb->tm_mon + 1);
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SystemTime.wDay = (WORD)(tmb->tm_mday);
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SystemTime.wHour = (WORD)(tmb->tm_hour);
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SystemTime.wMinute = (WORD)(tmb->tm_min);
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SystemTime.wSecond = (WORD)(tmb->tm_sec);
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SystemTime.wMilliseconds = 0;
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if ( !SystemTimeToFileTime( &SystemTime, &LocalFileTime ) ||
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!LocalFileTimeToFileTime( &LocalFileTime, &LastWriteTime ) )
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{
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errno = EINVAL;
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return(-1);
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}
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if ((tmb = _localtime64(×->actime)) == NULL) {
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errno = EINVAL;
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return(-1);
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}
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SystemTime.wYear = (WORD)(tmb->tm_year + 1900);
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SystemTime.wMonth = (WORD)(tmb->tm_mon + 1);
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SystemTime.wDay = (WORD)(tmb->tm_mday);
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SystemTime.wHour = (WORD)(tmb->tm_hour);
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SystemTime.wMinute = (WORD)(tmb->tm_min);
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SystemTime.wSecond = (WORD)(tmb->tm_sec);
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SystemTime.wMilliseconds = 0;
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if ( !SystemTimeToFileTime( &SystemTime, &LocalFileTime ) ||
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!LocalFileTimeToFileTime( &LocalFileTime, &LastAccessTime ) )
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{
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errno = EINVAL;
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return(-1);
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}
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/* set the date via the filedate system call and return. failing
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* this call implies the new file times are not supported by the
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* underlying file system.
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*/
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if (!SetFileTime((HANDLE)_get_osfhandle(fh),
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NULL,
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&LastAccessTime,
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&LastWriteTime
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))
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{
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errno = EINVAL;
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return(-1);
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}
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return(0);
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}
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#endif /* _UNICODE */
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#endif /* _POSIX_ */
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