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/***
*utime.c - set modification time for a file
*
* Copyright (c) 1985-1993, 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.
*
*******************************************************************************/
#ifndef _POSIX_
#include <cruntime.h>
#include <sys/types.h>
#include <sys/utime.h>
#include <msdos.h>
#include <dostypes.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>
/***
*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 _CRTAPI1 _utime (
char *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 = _open(fname, _O_RDWR | _O_BINARY)) < 0)
return(-1);
retval = _futime(fh, times);
_close(fh);
return(retval);
}
/***
*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 _CRTAPI1 _futime (
int fh,
struct _utimbuf *times
)
{
REG1 struct tm *tmb;
#ifndef _WIN32_
#error ERROR - ONLY WIN32 TARGET SUPPORTED!
#else /* def _WIN32_ */
SYSTEMTIME SystemTime;
FILETIME LastWriteTime;
FILETIME LastAccessTime;
struct _utimbuf deftimes;
if (times == NULL) {
time(&deftimes.modtime);
deftimes.actime = deftimes.modtime;
times = &deftimes;
}
if ((tmb = gmtime(×->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, &LastWriteTime )) {
errno = EINVAL;
return(-1);
}
if ((tmb = gmtime(×->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, &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);
}
#endif /* _WIN32_ */
return(0);
}
#endif /* _POSIX_ */
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