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From: "Lavrentiev, Anton (NIH/NLM/NCBI) [C]" <lavr AT ncbi DOT nlm DOT nih DOT gov>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: RE: second call to mmap() results in error
Date: Thu, 30 Jan 2014 18:36:34 +0000
Message-ID: <5F8AAC04F9616747BC4CC0E803D5907D0C4764C5@MLBXv04.nih.gov>
References: <01a801cf1cfa$77957900$66c06b00$@lbmsys.com> <20140129181250 DOT GW2821 AT calimero DOT vinschen DOT de> <52E95786 DOT 8050606 AT gmail DOT com> <20140130095822 DOT GY2821 AT calimero DOT vinschen DOT de> <001801cf1db6$66c47c40$344d74c0$@lbmsys.com> <20140130124558 DOT GA2821 AT calimero DOT vinschen DOT de> <003801cf1dbd$fc3ffc70$f4bff550$@lbmsys.com> <20140130170142 DOT GD2821 AT calimero DOT vinschen DOT de> <5F8AAC04F9616747BC4CC0E803D5907D0C4763CC AT MLBXv04 DOT nih DOT gov> <52EA9A53 DOT 2050203 AT cygwin DOT com>
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> Maybe you missed Corinna's reply?
> 
> <http://cygwin.com/ml/cygwin/2014-01/msg00519.html>

No, I did not.  She was going after ftruncate() there.

Yet, the problem seems to be in cygwin's <sys/mman.h>, which does this:

#ifndef __INSIDE_CYGWIN__
extern void *mmap (void *__addr, size_t __len, int __prot, int __flags, int __fd, off_t __off);
#endif

which means that user code can't use the prototype.  Why is it conditional?

Anton Lavrentiev

Contractor NIH/NLM/NCBI

P.S. http://linux.die.net/man/2/mmap


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