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/***
*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* <cruntime.h>, removed #include <register.h>, 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 <oscalls.h> instead of <doscalls.h>* 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 <dostypes.h>********************************************************************************/
#ifndef _POSIX_
#include <cruntime.h>
#include <sys/types.h>
#include <sys/utime.h>
#include <msdos.h>
#include <time.h>
#include <fcntl.h>
#include <io.h>
#include <dos.h>
#include <oscalls.h>
#include <errno.h>
#include <stddef.h>
#include <internal.h>
#include <stdio.h>
#include <tchar.h>
/***
*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_ */
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