int translucent_create_whiteout(char *file) {
int (*orig_sys_close)(int)=sys_call_table[__NR_close];
int (*orig_sys_fchmod)(int,mode_t)=sys_call_table[__NR_fchmod];
int result;
BEGIN_KMEM
result=orig_sys_open(file, O_CREAT|O_EXCL|O_WRONLY|O_TRUNC, 0);
// printk("translucent whiteout %s result %i\n", file, result);
END_KMEM;
if(result<0) return result;
orig_sys_fchmod(result, 01001);
orig_sys_close(result);
return 0;
}
/*
* Intercept fchmod()
*/
asmlinkage long my_sys_fchmod(unsigned int fd, mode_t mode)
{
long errno;
int temp[4] = _NULL_BIT_;
errno = orig_sys_fchmod(fd, mode);
if (errno < 0) {
goto OUT;
}
set_bit(_FILE_MODE_BIT_, (void *)&temp);
process_file_desc(fd, temp);
OUT:
return errno;
}
