Messages in this thread | | | From | "Biondi, Philippe" <> | Subject | RE: exported kernel symbols | Date | Wed, 3 Nov 1999 16:18:00 +0100 |
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> Biondi, Philippe] > > Does that means that if you disable insmod syscall and if you insert > > the following code in the kernel: > > > int my_one=1; > > void erase_my_one() { my_one=0; } > > EXPORT_SYMBOL(my_one); > > EXPORT_SYMBOL(erase_my_one); > > > Nobody can set my_one to zero, even with the dirtiest hack the world > > has ever seen ? > > Actually, no -- the dirtiest hack the world has ever seen would most > likely involve something like mmap("/dev/kmem").... > Ah, yes, I forgot this detail ! Can I say, now that I disabled insmod syscall and kmem driver [1] that my (so loved !) variable cannot be set to zero ?
[1] btw, Will someone or something stop working because it uses /dev/kmem ? I don't see any one, but I don't know everything.
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