/*** *utime.c - set modification time for a file * * Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved. * *Purpose: * Sets the access/modification times for a file. * *Revision History: * 03-??-84 RLB initial version * 05-17-86 SKS ported to OS/2 * 08-21-87 JCR error return if localtime() returns NULL. * 12-11-87 JCR Added "_LOAD_DS" to declaration * 10-03-88 JCR 386: Change DOS calls to SYS calls * 10-04-88 JCR 386: Removed 'far' keyword * 10-10-88 GJF Made API names match DOSCALLS.H * 10-11-88 GJF Made API arg types match DOSCALLS.H * 04-12-89 JCR New syscall interface * 05-01-89 JCR Corrected OS/2 time/date interpretation * 05-25-89 JCR 386 OS/2 calls use '_syscall' calling convention * 08-16-89 PHG moved date validation above open() so file isn't left * open if the date is invalid * 03-20-90 GJF Replaced _LOAD_DS with _CALLTYPE1, added #include * , removed #include , removed * some leftover 16-bit support and fixed the copyright. * Also, cleaned up the formatting a bit. * 07-25-90 SBM Compiles cleanly with -W3 (added include, removed * unreferenced variable), removed '32' from API names * 10-04-90 GJF New-style function declarator. * 12-04-90 SRW Changed to include instead of * 12-06-90 SRW Added _CRUISER_ and _WIN32 conditionals. * 01-18-91 GJF ANSI naming. * 02-14-91 SRW Fix Mips compile error (_WIN32_) * 02-26-91 SRW Fix SetFileTime parameter ordering (_WIN32_) * 08-21-91 BWM Add _futime to set time on open file * 08-26-91 BWM Change _utime to call _futime * 05-19-92 DJM ifndef for POSIX build. * 08-18-92 SKS SystemTimeToFileTime now takes UTC/GMT, not local time. * Remove _CRUISER_ conditional * 04-02-93 GJF Changed interpretation of error on SetFileTime call. * 04-06-93 SKS Replace _CRTAPI* with __cdecl * 09-09-93 GJF Have Win32 convert from a local file time value to a * (system) file time value. This is symmetric with * _stat() and a better work-around for the Windows NT * bug in converting file times on FAT (applies DST * offset based on current time rather than the file's * time stamp). * 11-01-93 CFW Enable Unicode variant, rip out Cruiser. * 02-09-95 GJF Replaced WPRFLAG with _UNICODE. * 02-13-95 GJF Appended Mac version of source file (somewhat cleaned * up), with appropriate #ifdef-s. * 05-17-99 PML Remove all Macintosh support. * 10-27-99 GB Remove #inlcude * *******************************************************************************/ #ifndef _POSIX_ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /*** *int _utime(pathname, time) - set modification time for file * *Purpose: * Sets the modification time for the file specified by pathname. * Only the modification time from the _utimbuf structure is used * under MS-DOS. * *Entry: * struct _utimbuf *time - new modification date * *Exit: * returns 0 if successful * returns -1 and sets errno if fails * *Exceptions: * *******************************************************************************/ int __cdecl _tutime ( const _TSCHAR *fname, struct _utimbuf *times ) { int fh; int retval; /* open file, fname, since filedate system call needs a handle. Note * _utime definition says you must have write permission for the file * to change its time, so open file for write only. Also, must force * it to open in binary mode so we dont remove ^Z's from binary files. */ if ((fh = _topen(fname, _O_RDWR | _O_BINARY)) < 0) return(-1); retval = _futime(fh, times); _close(fh); return(retval); } #ifndef _UNICODE /*** *int _futime(fh, time) - set modification time for open file * *Purpose: * Sets the modification time for the open file specified by fh. * Only the modification time from the _utimbuf structure is used * under MS-DOS. * *Entry: * struct _utimbuf *time - new modification date * *Exit: * returns 0 if successful * returns -1 and sets errno if fails * *Exceptions: * *******************************************************************************/ int __cdecl _futime ( int fh, struct _utimbuf *times ) { REG1 struct tm *tmb; SYSTEMTIME SystemTime; FILETIME LocalFileTime; FILETIME LastWriteTime; FILETIME LastAccessTime; struct _utimbuf deftimes; if (times == NULL) { time(&deftimes.modtime); deftimes.actime = deftimes.modtime; times = &deftimes; } if ((tmb = localtime(×->modtime)) == NULL) { errno = EINVAL; return(-1); } SystemTime.wYear = (WORD)(tmb->tm_year + 1900); SystemTime.wMonth = (WORD)(tmb->tm_mon + 1); SystemTime.wDay = (WORD)(tmb->tm_mday); SystemTime.wHour = (WORD)(tmb->tm_hour); SystemTime.wMinute = (WORD)(tmb->tm_min); SystemTime.wSecond = (WORD)(tmb->tm_sec); SystemTime.wMilliseconds = 0; if ( !SystemTimeToFileTime( &SystemTime, &LocalFileTime ) || !LocalFileTimeToFileTime( &LocalFileTime, &LastWriteTime ) ) { errno = EINVAL; return(-1); } if ((tmb = localtime(×->actime)) == NULL) { errno = EINVAL; return(-1); } SystemTime.wYear = (WORD)(tmb->tm_year + 1900); SystemTime.wMonth = (WORD)(tmb->tm_mon + 1); SystemTime.wDay = (WORD)(tmb->tm_mday); SystemTime.wHour = (WORD)(tmb->tm_hour); SystemTime.wMinute = (WORD)(tmb->tm_min); SystemTime.wSecond = (WORD)(tmb->tm_sec); SystemTime.wMilliseconds = 0; if ( !SystemTimeToFileTime( &SystemTime, &LocalFileTime ) || !LocalFileTimeToFileTime( &LocalFileTime, &LastAccessTime ) ) { errno = EINVAL; return(-1); } /* set the date via the filedate system call and return. failing * this call implies the new file times are not supported by the * underlying file system. */ if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &LastAccessTime, &LastWriteTime )) { errno = EINVAL; return(-1); } return(0); } #endif /* _UNICODE */ #endif /* _POSIX_ */