[Freedos-kernel] Re: [Freedos-cvs] freecom/lib cd_dir.c,1.4,1.5 critrchk.c,1.1,1.2 err61.c,1.4,1.5 mk_rddir.c,1.2,1.3 optsb.c,1.3,1.4 where.c,1.5,1.6

[Arkady V.Belousov]

Hi!

I wrote:

>> +++ mk_rddir.c        10 Dec 2005 10:09:43 -0000      1.3
>> +int lfn_mrc_dir(const char *path, int mode)
>> +{
>> +     struct REGPACK r;
>> +     int mrc_f[6] = { 0x713A, 0x7139, 0x713B, 0x3A, 0x39, 0x3B };
--------------------------------------------------^^^^--^^^^--^^^^

     BTW, bug! Function number should come in AH, not AL! So:

>> +     r.r_ax = mrc_f[mode + (checkDriveSupportsLFN(getdisk() + 'A') ? 0 : 
>> 3)];
>     if (checkDriveSupportsLFN(getdisk() + 'A'))
>       mode += 0x7100;
>     r.r_ax = mode;

     Possible solution with my edition:

if (...)
  mode += 0x7100;
else
  mode <<= 8; /* shift low byte to high byte */
r.r_ax = mode;

     Or:

if (...)
  mode = (mode >> 8) + 0x7100;
r.r_ax = mode;
[...]
#define chdir(x) lfn_mrc_dir(x,0x3B00)
>----------------------------------^^





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