Re: [Freedos-kernel] kernel 2038

2009-05-17 Thread Pat Villani
I'll take care of it tomorrow.

Pat


On Sun, May 17, 2009 at 11:11 PM, Kenneth J. Davis jere...@fdos.org wrote:
 Kernel 2038 tagged and available at http://www.fdos.org/kernel/latest/
 Someone with access, please upload to ibiblio and release on SF.


 Please test and report any new issues to the mailing list.
 Depending on any reported issues, 2039 scheduled to be released in
 about a month.  Comments about new or existing bugs to focus on for
 next release welcome.

 Thank you,
 Jeremy

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Re: [Freedos-kernel] Hello again

2009-05-17 Thread Bart Oldeman
2009/5/17 Bart Oldeman bartolde...@users.sourceforge.net:
 0Bh    WORD    contains the high word of the relative cluster number
 at offset 19h
 2Bh    DWORD  contains the current cluster number
 35h    DWORD  contains the starting cluster number

sorry, the last two are the other way around:
2BhDWORD  contains the starting cluster number
35hDWORD  contains the current cluster number

Bart

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Re: [Freedos-kernel] Hello again

2009-05-17 Thread Bart Oldeman
2009/5/17 Christian Masloch c...@bttr-software.de:
 Just in case you're talking about the extended SFT: I'll use a
 FAT32-extended SFT (probably compatible to EDR-DOS's extensions for FAT32)
 even without FAT+. Somewhere *at least the beginning cluster* of the file
 has to be stored, and the MS-DOS SFT provides no space for the high word
 of a 32-bit cluster value. If programs assume the SFT size of MS-DOS these
 can be used with FAT16 kernels which don't extend the SFT. As mentioned
 previously, redirectors are not affected by larger SFTs since they get
 passed only pointers to the SFT by DOS.

Actually MSDOS 7.10 already uses the SFT in a different way, but
undocumented by RBIL,
for both FAT16 and FAT32:
0BhWORDcontains the high word of the relative cluster number
at offset 19h
2BhDWORD  contains the current cluster number
35hDWORD  contains the starting cluster number
How this interacts with SHARE.EXE: I have no idea
This was just obtained by writing a program that dumps the SFT after
opening a large file and reading 7*4k into it on a FAT32 partition
with 4k clusters.

 Note also that the FAT+ specification provides a method to avoid access by
 low-level programs or operating systems which don't know FAT+ on FAT32
 filesystems by setting the version number to 0.1. DOS-C's FAT+ support
 could be set by default (if the build option for that support was enabled
 at all) to support/create large files only on drives with the version
 number set that way. Since DOS-C doesn't (yet) support FAT16 file systems
 larger than 4 GiB, FAT16+ is no option anyway.

I think FAT+ as is (and implemented by EDR-DOS) then is still much too
dangerous, because other OSes can still see it, so:
* a new partition type number for the MBR should be defined (much in
the same way as 32 MB FAT16, LBA etc) to avoid other (D)OSes from
seeing it automatically.
* normal DOS programs should not be able to open too large files. This
can be accomplished by extending int21/ah=6c, another bit in BH
(FreeDOS doesn't properly implement its bit 4 for files = 2Gb,  4Gb
even: it
opens without complaint).
The difference with VFAT, and the NT lcase bit is that those were much
more backwards compatible, i.e. no harmful data corruption when using
such partititions with earlier DOS versions.

Bart

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[Freedos-kernel] kernel 2038

2009-05-17 Thread Kenneth J. Davis
Kernel 2038 tagged and available at http://www.fdos.org/kernel/latest/
Someone with access, please upload to ibiblio and release on SF.


Please test and report any new issues to the mailing list.
Depending on any reported issues, 2039 scheduled to be released in
about a month.  Comments about new or existing bugs to focus on for
next release welcome.

Thank you,
Jeremy

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[Freedos-kernel] test

2009-05-17 Thread dos386
as Eric suggested :-D

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[Freedos-kernel] kernel 2038

2009-05-17 Thread dos386
 Kernel 2038 tagged and available at http://www.fdos.org/kernel/latest/

Thanks :-) Even my GetDiskFreeSpaceEx-BUG is fixed ? I'll test :-)

 Someone with access, please upload to ibiblio and release on SF.

Indeed ... now it says latest kernel is from 2006 !!!

 Depending on any reported issues, 2039 scheduled to be released in about a 
 month.

COOL. But why not 2040 ? The 2036/2037/2038 mess has been around for 5 years ;-)

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Re: [Freedos-kernel] kernel 2038

2009-05-17 Thread dos386
answer didn't work

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