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Re: mmap() on 64K aligned address fails
René Berber, le Sun 27 Nov 2005 16:17:45 -0600, a écrit :
> Corinna Vinschen wrote:
> [snip]
> >>mmap(0x470000, 4096, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0L)
> >>somehow an invalid invocation.
> >
> >
> > I didn't inspect the testcase all too closely since it's annoyingly long
> > for such a simple test. But what exactly do you expect when trying to
> > mmap an arbitrary memory address in the virtual address space which you
> > know nothing about?
>
> It's not an arbitrary memory address, the 0x470000 is the result of aligning a
> pagesize space into 17xpagesize malloced memory.
Memmapping to malloced memory could very well be forbidden. Why would
one want to do this?
Regards,
Samul
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