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/* BLURB gpl
Coda File System
Release 5
Copyright (c) 1987-1999 Carnegie Mellon University
Additional copyrights listed below
This code is distributed "AS IS" without warranty of any kind under
the terms of the GNU General Public Licence Version 2, as shown in the
file LICENSE. The technical and financial contributors to Coda are
listed in the file CREDITS.
Additional copyrights
#*/
#ifndef CODA_MMAP_ANON_H
#define CODA_MMAP_ANON_H
#include <unistd.h>
#include <sys/mman.h>
#ifndef MAP_ANON
#define MAP_ANON 0
#endif
#define mmap_anon(raddrptr, addrptr, len, prot) do { \
int fd = -1, flags = MAP_ANON | MAP_PRIVATE; \
if (addrptr) flags |= MAP_FIXED; \
if (!MAP_ANON) fd = open("/dev/zero", O_RDWR); \
raddrptr = mmap((char *)addrptr, len, prot, flags, fd, 0); \
if (fd != -1) close(fd); \
} while(0);
#endif /* CODA_MMAP_ANON_H */
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