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Mail Archives: djgpp-workers/2001/08/08/07:57:41

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Message-ID: <007601c12000$30d8adc0$0a02a8c0@acceleron>
From: "Andrew Cottrell" <acottrel AT ihug DOT com DOT au>
To: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>,
"Charles Sandmann" <sandmann AT clio DOT rice DOT edu>
Cc: <djgpp-workers AT delorie DOT com>
References: <012401c11f40$19d063e0$0a02a8c0 AT acceleron> <9003-Tue07Aug2001202952+0300-eliz AT is DOT elta DOT co DOT il>
Subject: Re: Fw: Windows 2000 /dev/null permission query
Date: Wed, 8 Aug 2001 21:49:31 +1000
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Reply-To: djgpp-workers AT delorie DOT com

> > The call to 71A6 returns the following data if passed the file handle
from
> > 6C00h or 3Dh. I do not have any code to decipher the results, except the
> > length of the file which is correct.
> >
> > DJGPP_204 D:\dj204\contrib\touch>test
> > -rw-r--r--   1 AC       root            4 Aug 25  2001 new.txt
> > file_attrib = 0x0020
> > creation_time_h = 0x20626972
> > creation_time_l = 0x6E6F6974
> > access_time_h =  0x206C5F65
> > access_time_l =  0x32783020
> > write_time_h =  0xD303230
> > write_time_l =  0x33323330
> > hd_serial =  0x84950A0A
> > retval_l =  0x0004
> > retval_h =  0x0000
> > links =  0x0001
> > uniq_id_high =  0x80000
> > uniq_id_low =  0x88E0
> >
> > Hope this helps.
>
> To see if these values are okay, I need to know the file's times as
> reported by some independent program.  Can someone suggest a way to
> print the 3 file times up to the last bit of accuracy using some Win32
> application?
I have used some example source code from VC++ to write an app to display
the following:
DJGPP_204 D:\work\filetime\Debug>filetime
create high = 0x01C11FFA
create low = 0xF8AE6C80
access high = 0x01C11FFA
access low = 0xF8AFF3B0
write high = 0x01C12EF7
write low = 0xDCD79400
FILE TIME 10:57:44 PM
new.txt
        Achnrst 4 byte(s)
        Created    : 08/08/01 21:12:11
        Last Access: 08/08/01 21:12:11
        Last Write : 08/27/01 22:57:44

The windows app uses the FILETIME structure is a 64-bit value representing
the number of 100-nanosecond intervals since January 1, 1601.  So it

I then re-ran the test app, but the results are not the same should they be?
DJGPP_204 D:\work\filetime\Debug>touch
file_attrib = 0x0020
creation_time_h = 0x20626972
creation_time_l = 0x6E6F6974
access_time_h =  0x206C5F65
access_time_l =  0x32783020
write_time_h =  0xD303230
write_time_l =  0x33323330
hd_serial =  0x84950A0A
retval_l =  0x0004
retval_h =  0x0000
links =  0x0001
uniq_id_high =  0x30000
uniq_id_low =  0x890A

> > Now for the next hard questions: What is the consensus as to the way
> > to head on fixing the LFN issues on Win2K?  Do we fix on a case by
> > case basis for each of the file I/O functions that fail?  Test each
> > of the LFN API function calls and then make a descision on what to
> > do next?
>
> We should at least test each LFN function called by the library.  We
> should do that for both regular files and devices.  We should also try
> functions, whether from the LFN API or not, which accept a handle,
> since we already know they might be broken for handles created by
> 716C.
I will start to prepare a series of tests on the weekend  that we can use to
verify each of the LFN functions used by LIBC.

> Since IOCTL is broken on W2K, we probably should decide how to fix
> that (see my other mail), and then begin fixing it.  The first step
> would be to prepare a list of IOCTL subfunctions called by the library
> and rgeir callers; the next step is to see whether all the IOCTL
> subfunctions are broken or only some.
I need to do some background reading about this to get up to speed. By IOCTL
are we talking about 44xx calls?

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