/* Make sure there's at least one syscall enabled. */
int validate_syscall_tables(void)
{
unsigned int ret;
if (biarch == TRUE) {
ret = validate_syscall_table_32();
ret |= validate_syscall_table_64();
return ret;
}
/* non-biarch case*/
if (shm->nr_active_syscalls == 0)
return FALSE;
else
return TRUE;
}
static void choose_syscall_table(int childno)
{
if (biarch == FALSE) {
active_syscalls = shm->active_syscalls;
nr_active_syscalls = shm->nr_active_syscalls;
} else {
/* First, check that we have syscalls enabled in either table. */
if (validate_syscall_table_64() == FALSE) {
use_64bit = FALSE;
/* If no 64bit syscalls enabled, force 32bit. */
shm->do32bit[childno] = TRUE;
}
if (validate_syscall_table_32() == FALSE)
use_32bit = FALSE;
/* If both tables enabled, pick randomly. */
if ((use_64bit == TRUE) && (use_32bit == TRUE)) {
/*
* 10% possibility of a 32bit syscall
*/
shm->do32bit[childno] = FALSE;
if (rand() % 100 < 10)
shm->do32bit[childno] = TRUE;
}
if (shm->do32bit[childno] == FALSE) {
syscalls = syscalls_64bit;
nr_active_syscalls = shm->nr_active_64bit_syscalls;
active_syscalls = shm->active_syscalls64;
max_nr_syscalls = max_nr_64bit_syscalls;
} else {
syscalls = syscalls_32bit;
nr_active_syscalls = shm->nr_active_32bit_syscalls;
active_syscalls = shm->active_syscalls32;
max_nr_syscalls = max_nr_32bit_syscalls;
}
}
if (no_syscalls_enabled() == TRUE) {
output(0, "[%d] No more syscalls enabled. Exiting\n", getpid());
shm->exit_reason = EXIT_NO_SYSCALLS_ENABLED;
}
}
static bool choose_syscall_table(void)
{
bool do32 = FALSE;
if (biarch == FALSE) {
active_syscalls = shm->active_syscalls;
} else {
/* First, check that we have syscalls enabled in either table. */
if (validate_syscall_table_64() == FALSE) {
use_64bit = FALSE;
/* If no 64bit syscalls enabled, force 32bit. */
do32 = TRUE;
}
if (validate_syscall_table_32() == FALSE)
use_32bit = FALSE;
/* If both tables enabled, pick randomly. */
if ((use_64bit == TRUE) && (use_32bit == TRUE)) {
/* 10% possibility of a 32bit syscall */
if (rand() % 100 < 10)
do32 = TRUE;
}
if (do32 == FALSE) {
syscalls = syscalls_64bit;
active_syscalls = shm->active_syscalls64;
max_nr_syscalls = max_nr_64bit_syscalls;
} else {
syscalls = syscalls_32bit;
active_syscalls = shm->active_syscalls32;
max_nr_syscalls = max_nr_32bit_syscalls;
}
}
return do32;
}
