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mmap problems
- To: cygwin at sourceware dot cygnus dot com
- Subject: mmap problems
- From: Alexandre Jose Reis Santoro <santoro at anna dot stanford dot edu>
- Date: Mon, 27 Dec 1999 11:47:32 -0800 (PST)
- Reply-To: Alexandre Jose Reis Santoro <santoro at anna dot stanford dot edu>
The following mmap call works on both Linux and Solaris, but fails on
cygwin-NT:
caddr_t p = NULL;
if ((p = mmap(0,
8192,
PROT_READ | PROT_WRITE,
MAP_SHARED,
m_fd,
(bn * 8192))) == MAP_FAILED)
{
fprintf(stderr, "DBFile1::getBlock - mmap failed : %d\n", errno);
exit(1); //@@ errno set -- handle errors
}
In the cygwin-NT case, mmap works properly if the offset value (given by
bn*8192) is 0, but fails otherwise with EACCESS.
Has anyone encountered this problem before? Does anyone know what is
happening?
Any help would be appreciated,
- Alex Santoro (santoro@poset.stanford.edu)
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