int get_random_fd(void)
{
return rand()%30000;
#if VMW
/* 25% chance of returning something new. */
if ((rand() % 4) == 0)
return get_new_random_fd();
/* the rest of the time, return the same fd as last time. */
regen:
if (shm->fd_lifetime == 0) {
shm->current_fd = get_new_random_fd();
shm->fd_lifetime = rand_range(5, max_children);
} else
shm->fd_lifetime--;
if (shm->current_fd == 0) {
shm->fd_lifetime = 0;
goto regen;
}
return shm->current_fd;
#endif
}
int get_random_fd(void)
{
/* 25% chance of returning something new. */
if ((rand() % 4) == 0)
return get_new_random_fd();
/* the rest of the time, return the same fd as last time. */
regen:
if (shm->fd_lifetime == 0) {
shm->current_fd = get_new_random_fd();
shm->fd_lifetime = (rand() % shm->max_children) + 5;
} else
shm->fd_lifetime--;
if (shm->current_fd == 0) {
shm->fd_lifetime = 0;
goto regen;
}
return shm->current_fd;
}
static unsigned long fill_arg(struct syscallrecord *rec, unsigned int argnum)
{
struct syscallentry *entry;
unsigned int call;
enum argtype argtype;
call = rec->nr;
entry = syscalls[call].entry;
if (argnum > entry->num_args)
return 0;
argtype = get_argtype(entry, argnum);
switch (argtype) {
case ARG_UNDEFINED:
if (RAND_BOOL())
return (unsigned long) rand64();
return (unsigned long) get_writable_address(page_size);
case ARG_FD:
if (RAND_BOOL()) {
unsigned int i;
/* If this is the 2nd or more ARG_FD, make it unique */
for (i = 0; i < argnum; i++) {
enum argtype arg;
arg = get_argtype(entry, i);
if (arg == ARG_FD)
return get_new_random_fd();
}
}
return get_random_fd();
case ARG_LEN:
return (unsigned long) get_len();
case ARG_ADDRESS:
return handle_arg_address(rec, argnum);
case ARG_NON_NULL_ADDRESS:
return (unsigned long) get_non_null_address();
case ARG_MMAP:
return (unsigned long) get_map();
case ARG_PID:
return (unsigned long) get_pid();
case ARG_RANGE:
return handle_arg_range(entry, argnum);
case ARG_OP: /* Like ARG_LIST, but just a single value. */
return handle_arg_op(entry, argnum);
case ARG_LIST:
return handle_arg_list(entry, argnum);
case ARG_CPU:
return (unsigned long) get_cpu();
case ARG_PATHNAME:
return (unsigned long) generate_pathname();
case ARG_IOVEC:
return handle_arg_iovec(entry, rec, argnum);
case ARG_IOVECLEN:
case ARG_SOCKADDRLEN:
/* We already set the len in the ARG_IOVEC/ARG_SOCKADDR case
* So here we just return what we had set there. */
return get_argval(rec, argnum);
case ARG_SOCKADDR:
return handle_arg_sockaddr(entry, rec, argnum);
case ARG_MODE_T:
return handle_arg_mode_t();
case ARG_SOCKETINFO:
return (unsigned long) get_rand_socketinfo();
}
BUG("unreachable!\n");
}
