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/* getamap.c - Get the address of the first anonymous mapping
*
* Copyright (c)2003 by Peter Busser <peter@adamantix.org>
* This file has been released under the GNU Public Licence version 2 or later
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#ifdef __OpenBSD__
#define MAP_ANONYMOUS MAP_ANON
#endif
int main( int argc, char *argv[] )
{
char *buf;
buf = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if( buf == NULL ) {
fprintf( stderr, "mmap() returned NULL\n" );
exit( 1 );
}
printf( "%0p\n", buf );
exit( 0 );
}
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