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dosfns, int2f: make SHARE uninstallable

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Refer to https://github.com/FDOS/share/issues/10
This commit is contained in:
C. Masloch 2021-10-28 10:09:18 +02:00 committed by Kenneth J Davis
parent fbc95b7cc2
commit cedcaee5ad
2 changed files with 4 additions and 1 deletions
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4
kernel/dosfns.c
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@ -1395,8 +1395,10 @@ BOOL IsShareInstalled(BOOL recheck)
extern unsigned char ASMPASCAL share_check(void); extern unsigned char ASMPASCAL share_check(void);
if (recheck == FALSE) if (recheck == FALSE)
return share_installed; return share_installed;
if (!share_installed && share_check() == 0xff) if (share_check() == 0xff)
share_installed = TRUE; share_installed = TRUE;
else
share_installed = FALSE;
return share_installed; return share_installed;
} }

1
kernel/int2f.asm
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@ -250,6 +250,7 @@ IntDosCal:
SHARE_CHECK: SHARE_CHECK:
mov ax, 0x1000 mov ax, 0x1000
int 0x2f int 0x2f
test ax, "US" ; Uninstallable SHARE signature
ret ret
; DOS calls this to see if it's okay to open the file. ; DOS calls this to see if it's okay to open the file.