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Date: | Sun, 27 Nov 2005 23:22:46 +0100 |
From: | Samuel Thibault <samuel DOT thibault AT ens-lyon DOT org> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: mmap() on 64K aligned address fails |
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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 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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