void deactivate_disabled_syscalls_biarch(void)
{
struct syscallentry *entry;
unsigned int i;
for_each_64bit_syscall(i) {
entry = syscalls_64bit[i].entry;
if (entry == NULL)
continue;
if (entry->flags & TO_BE_DEACTIVATED) {
entry->flags &= ~(ACTIVE|TO_BE_DEACTIVATED);
deactivate_syscall64(i);
output(0, "Marked 64-bit syscall %s (%d) as deactivated.\n",
entry->name, entry->number);
}
}
for_each_32bit_syscall(i) {
entry = syscalls_32bit[i].entry;
if (entry == NULL)
continue;
if (entry->flags & TO_BE_DEACTIVATED) {
entry->flags &= ~(ACTIVE|TO_BE_DEACTIVATED);
deactivate_syscall32(i);
output(0, "Marked 32-bit syscall %s (%d) as deactivated.\n",
entry->name, entry->number);
}
}
}
int child_random_syscalls(int childno)
{
int ret;
unsigned int syscallnr;
ret = sigsetjmp(ret_jump, 1);
if (ret != 0) {
if (handle_sigreturn(childno) == 0)
return 0;
ret = 0;
}
while (shm->exit_reason == STILL_RUNNING) {
check_parent_pid();
while (shm->regenerating == TRUE)
sleep(1);
/* If the parent reseeded, we should reflect the latest seed too. */
if (shm->seed != shm->seeds[childno])
set_seed(childno);
choose_syscall_table(childno);
if (nr_active_syscalls == 0) {
shm->exit_reason = EXIT_NO_SYSCALLS_ENABLED;
goto out;
}
if (shm->exit_reason != STILL_RUNNING)
goto out;
syscallnr = rand() % nr_active_syscalls;
/* If we got a syscallnr which is not actvie repeat the attempt, since another child has switched that syscall off already.*/
if (active_syscalls[syscallnr] == 0)
continue;
syscallnr = active_syscalls[syscallnr] - 1;
if (validate_specific_syscall_silent(syscalls, syscallnr) == FALSE) {
if (biarch == FALSE) {
deactivate_syscall(syscallnr);
} else {
if (shm->do32bit[childno] == TRUE)
deactivate_syscall32(syscallnr);
else
deactivate_syscall64(syscallnr);
}
continue;
}
shm->syscallno[childno] = syscallnr;
if (syscalls_todo) {
if (shm->total_syscalls_done >= syscalls_todo) {
output(0, "Reached maximum syscall count (todo = %d, done = %d), exiting...\n",
syscalls_todo, shm->total_syscalls_done);
shm->exit_reason = EXIT_REACHED_COUNT;
}
}
ret = mkcall(childno);
}
out:
return ret;
}