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- Warn -- Courtesy of
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- Dr. Bob's Utilities
- 444 Maple lane
- St. Paul, MN 55126
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- Warn is not warranted in any way although it seems safe enough to me.
- Warn looks for interrupts and warns you of potentially dangerous ones.
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- DO NOT RELY on Warn to protect you from all possible dangerous programs.
- It checks for INT 13h (disk i/o), INT 25h (absolute disk read),
- INT 26h (absolute disk write), and INT 27h (terminate but stay resident).
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- You should know, however, that reading, writing and DELETING can be
- done through INT 21h which occurs so often that it is not practical to
- check for.
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- You should also be aware that any interrupt can be disguised as any
- other interrupt and that most C compilers have a call that makes it
- virtually impossible to tell what kind of interrupt is being used.
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- In other words, this program will only warn you of very amateur
- attempts to trash your disks.
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- The only safe way to protect yourself from dangerous programs is
- to run a program that replaces the above interrupts with its own and
- checks the registers when these interrupts are actually called. If I
- ever have the time I may write one.
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- Good Luck,
- Dr. Bob
-
- (Bob Ray has been known to frequent Terrapin Station BBS often.
- 612/623-0152 24 hours a day --- 1200/2400
- A BBS for Programmers and Technical Folk)