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/*
* bug-mmap - regression test for a bug in zzuf
*
* Copyright © 2002—2015 Sam Hocevar <sam@hocevar.net>
* © 2015 Alexander Cherepanov <cherepan@mccme.ru>
*
* This program is free software. It comes without any warranty, to
* the extent permitted by applicable law. You can redistribute it
* and/or modify it under the terms of the Do What the Fuck You Want
* to Public License, Version 2, as published by the WTFPL Task Force.
* See http://www.wtfpl.net/ for more details.
*/
#include "config.h"
#define _BSD_SOURCE 1 /* for MAP_POPULATE */
#if HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#if HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
int main(void)
{
#if defined _SC_PAGE_SIZE && defined MAP_POPULATE
int fd = open("/etc/hosts", O_RDONLY);
mmap(0, sysconf(_SC_PAGE_SIZE) * 2, PROT_READ,
MAP_PRIVATE | MAP_POPULATE, fd, 0);
#endif
return EXIT_SUCCESS;
}
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