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#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/syscall.h> /* For SYS_xxx definitions */
int main()
{
int fd, ret;
struct stat fs;
void *r;
int rc;
/* create a file with something in it */
fd = open("foobar", O_WRONLY|O_CREAT|O_TRUNC, 0600);
lseek(fd, 1024, SEEK_SET);
write(fd, "abcdef", 6);
close(fd);
fd = open("foobar", O_RDONLY);
/* stat for file size */
ret = fstat(fd, &fs);
/* mmap file file, then unmap it. */
r = mmap(NULL, fs.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (r != MAP_FAILED)
munmap(r, fs.st_size);
close(fd);
/* OK, try some system calls to see if we get the arguments
* correctly. */
#if (__LONG_MAX__ > __INT_MAX__)
rc = syscall (__NR_dup, (unsigned long)-12345,
(unsigned long)0xffffffffffffffff,
(unsigned long)0xa5a5a5a5a5a5a5a5,
(unsigned long)0xf0f0f0f0f0f0f0f0,
(unsigned long)0x5a5a5a5a5a5a5a5a,
(unsigned long)0xe38e38e38e38e38e);
#else
rc = syscall (__NR_dup, (unsigned long)-12345,
(unsigned long)0xffffffff,
(unsigned long)0xa5a5a5a5,
(unsigned long)0xf0f0f0f0,
(unsigned long)0x5a5a5a5a,
(unsigned long)0xe38e38e3);
#endif
#if (__LONG_MAX__ > __INT_MAX__)
rc = syscall ((unsigned long)0xffff,
(unsigned long)0x1c71c71c71c71c71,
(unsigned long)0x0f0f0f0f0f0f0f0f,
(unsigned long)0xdb6db6db6db6db6d,
(unsigned long)0x2492492492492492,
(unsigned long)0xad6b5ad6b5ad6b5a,
(unsigned long)0xdef7ddef7ddef7dd);
#else
rc = syscall ((unsigned long)0xffff,
(unsigned long)0x1c71c71c,
(unsigned long)0x0f0f0f0f,
(unsigned long)0xdb6db6db,
(unsigned long)0x24924924,
(unsigned long)0xad6b5ad6,
(unsigned long)0xdef7ddef);
#endif
return 0;
}
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