Set file creation/change time in touch

[andre5x]

Description

With the touch function you can set the modification and access time, but not the creation/change time. I have several Windows applications where I need to set the creation time, for example a backup tool that needs to preserve the creation time. I have solved that with a C program that can set creation, modification and access times and that can be invoked from PHP using (Unix) sockets. But that is a relatively complicated solution, it would be much simpler/neater if you could set the creation time using touch.
It would also be nice if the copy function would have a flag to preserve ctime, mtime and a time. In that case a touch to reset ctime, mtime and atime would not be needed at all. But I have a PHP tool that sets ctime and mtime of JPG files based on the ctime and mtime in the Exif header, for that I need the touch solution. A flag in the copy function would be a partial solution, setting ctime with touch is a more general and complete solution.

[cmb69]

I think it is possible to change the creation time on Windows using SetFileInformationByHandle(), but I'm not sure if this even possible on POSIX. If not, we could still introduce a dedicated funtion for Windows only (like we have already some sapi_windows_* functions).

Note that this FR is slightly related to #14890.

[andre5x]

I use the following Windows code:
h = CreateFile(fname,GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);
if (h == INVALID_HANDLE_VALUE) die("CreateFile failure");
if (!SetFileTime(h,pc,pa,pm)) die("SetFileTime failure");
if (!CloseHandle(h)) die("CloseHandle failure");
where pc, pa, pm are pointers to FILETIME vars (containing GMT times, pointers are NULL if the corresponding time does not need to be changed).

[sezeryalcin]

this is a good added feature for touch() function. It already handles atime and mtime. ctime could be added as another optional parameter.