#include <limits.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <strings.h>
#include <string.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/mman.h>


int
main(int argc, const char *argv[])
{
    char         fname[PATH_MAX];
    int          cnt;
    int          fd;
    struct stat  sb;
    void        *addr;

    cnt        = readlink("/proc/self/exe", fname, sizeof(fname));
    fname[cnt] = '\0';

#define EXE_SUFFIX ".exe"
#define STRLEN_EXE_SUFFIX (sizeof(EXE_SUFFIX)-1)
    if (cnt <= STRLEN_EXE_SUFFIX
        || strcasecmp(&fname[cnt-STRLEN_EXE_SUFFIX], EXE_SUFFIX))
        strcpy(fname+cnt, EXE_SUFFIX);

    fd = open(fname, O_RDONLY);
    if (fd < 0)
    {
	perror("open self");
	return -1;
    }

    if (fstat(fd, &sb) < 0)
    {
	perror("stat");
	return -1;
    }

    addr = mmap(NULL, sb.st_size, (PROT_READ|PROT_WRITE),
		(MAP_NORESERVE|MAP_PRIVATE), fd, 0);
    if (addr == MAP_FAILED)
    {
	perror("mmap1");
	return -1;
    }

    addr = mmap(NULL, sb.st_size, (PROT_READ|PROT_WRITE),
		(MAP_NORESERVE|MAP_PRIVATE), fd, 0);
    if (addr == MAP_FAILED)
    {
	perror("mmap2");
	return -1;
    }

    close(fd);

    puts("test passed");
    return 0;
}