core/kernel_linux/clients/umbra/umbra.c
/* event on which syscall is interested */
event on which syscall is interested
event on which syscall is interested
bool
umbra_filter_syscall(void *drcontext, int sysnum)
{
    return true;
}
bool umbra_filter_syscall ( void * drcontext , int sysnum ) { return true ; }
event on which syscall is interested
event on which syscall is interested
/* intercept every syscall */