+/*
+ * We currently only need the following fields from the sigevent
+ * structure: sigev_value, sigev_signo, sig_notify and (sometimes
+ * sigev_notify_thread_id). The others are handled in user mode.
+ * We also assume that copying sigev_value.sival_int is sufficient
+ * to keep all the bits of sigev_value.sival_ptr intact.
+ */
+int get_compat_sigevent(struct sigevent *event,
+ const struct compat_sigevent __user *u_event)
+{
+ memset(event, 0, sizeof(*event));
+ return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) ||
+ __get_user(event->sigev_value.sival_int,
+ &u_event->sigev_value.sival_int) ||
+ __get_user(event->sigev_signo, &u_event->sigev_signo) ||
+ __get_user(event->sigev_notify, &u_event->sigev_notify) ||
+ __get_user(event->sigev_notify_thread_id,
+ &u_event->sigev_notify_thread_id))
+ ? -EFAULT : 0;
+}
+
+long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
+ unsigned long bitmap_size)
+{
+ int i, j;
+ unsigned long m;
+ compat_ulong_t um;
+ unsigned long nr_compat_longs;
+
+ /* align bitmap up to nearest compat_long_t boundary */
+ bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
+
+ if (!access_ok(VERIFY_READ, umask, bitmap_size / 8))
+ return -EFAULT;
+
+ nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
+
+ for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
+ m = 0;
+
+ for (j = 0; j < sizeof(m)/sizeof(um); j++) {
+ /*
+ * We dont want to read past the end of the userspace
+ * bitmap. We must however ensure the end of the
+ * kernel bitmap is zeroed.
+ */
+ if (nr_compat_longs-- > 0) {
+ if (__get_user(um, umask))
+ return -EFAULT;
+ } else {
+ um = 0;
+ }
+
+ umask++;
+ m |= (long)um << (j * BITS_PER_COMPAT_LONG);
+ }
+ *mask++ = m;
+ }
+
+ return 0;
+}
+
+long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
+ unsigned long bitmap_size)
+{
+ int i, j;
+ unsigned long m;
+ compat_ulong_t um;
+ unsigned long nr_compat_longs;
+
+ /* align bitmap up to nearest compat_long_t boundary */
+ bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
+
+ if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8))
+ return -EFAULT;
+
+ nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
+
+ for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
+ m = *mask++;
+
+ for (j = 0; j < sizeof(m)/sizeof(um); j++) {
+ um = m;
+
+ /*
+ * We dont want to write past the end of the userspace
+ * bitmap.
+ */
+ if (nr_compat_longs-- > 0) {
+ if (__put_user(um, umask))
+ return -EFAULT;
+ }
+
+ umask++;
+ m >>= 4*sizeof(um);
+ m >>= 4*sizeof(um);
+ }
+ }
+
+ return 0;
+}
+
+void
+sigset_from_compat (sigset_t *set, compat_sigset_t *compat)
+{
+ switch (_NSIG_WORDS) {
+ case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 );
+ case 3: set->sig[2] = compat->sig[4] | (((long)compat->sig[5]) << 32 );
+ case 2: set->sig[1] = compat->sig[2] | (((long)compat->sig[3]) << 32 );
+ case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 );
+ }
+}
+
+asmlinkage long
+compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
+ struct compat_siginfo __user *uinfo,
+ struct compat_timespec __user *uts, compat_size_t sigsetsize)
+{
+ compat_sigset_t s32;
+ sigset_t s;
+ int sig;
+ struct timespec t;
+ siginfo_t info;
+ long ret, timeout = 0;
+
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
+ return -EFAULT;
+ sigset_from_compat(&s, &s32);
+ sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP));
+ signotset(&s);
+
+ if (uts) {
+ if (get_compat_timespec (&t, uts))
+ return -EFAULT;
+ if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0
+ || t.tv_sec < 0)
+ return -EINVAL;
+ }
+
+ spin_lock_irq(¤t->sighand->siglock);
+ sig = dequeue_signal(current, &s, &info);
+ if (!sig) {
+ timeout = MAX_SCHEDULE_TIMEOUT;
+ if (uts)
+ timeout = timespec_to_jiffies(&t)
+ +(t.tv_sec || t.tv_nsec);
+ if (timeout) {
+ current->real_blocked = current->blocked;
+ sigandsets(¤t->blocked, ¤t->blocked, &s);
+
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ timeout = schedule_timeout_interruptible(timeout);
+
+ spin_lock_irq(¤t->sighand->siglock);
+ sig = dequeue_signal(current, &s, &info);
+ current->blocked = current->real_blocked;
+ siginitset(¤t->real_blocked, 0);
+ recalc_sigpending();
+ }
+ }
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ if (sig) {
+ ret = sig;
+ if (uinfo) {
+ if (copy_siginfo_to_user32(uinfo, &info))
+ ret = -EFAULT;
+ }
+ }else {
+ ret = timeout?-EINTR:-EAGAIN;
+ }
+ return ret;
+
+}
+
+#ifdef __ARCH_WANT_COMPAT_SYS_TIME
+
+/* compat_time_t is a 32 bit "long" and needs to get converted. */
+
+asmlinkage long compat_sys_time(compat_time_t __user * tloc)
+{
+ compat_time_t i;
+ struct timeval tv;
+
+ vx_gettimeofday(&tv);
+ i = tv.tv_sec;
+
+ if (tloc) {
+ if (put_user(i,tloc))
+ i = -EFAULT;
+ }
+ return i;
+}
+
+asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
+{
+ struct timespec tv;
+ int err;
+
+ if (get_user(tv.tv_sec, tptr))
+ return -EFAULT;
+
+ tv.tv_nsec = 0;
+
+ err = security_settime(&tv, NULL);
+ if (err)
+ return err;
+
+ vx_settimeofday(&tv);
+ return 0;
+}
+
+#endif /* __ARCH_WANT_COMPAT_SYS_TIME */
+
+#ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
+asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize)
+{
+ sigset_t newset;
+ compat_sigset_t newset32;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
+ return -EFAULT;
+ sigset_from_compat(&newset, &newset32);
+ sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
+
+ spin_lock_irq(¤t->sighand->siglock);
+ current->saved_sigmask = current->blocked;
+ current->blocked = newset;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ set_thread_flag(TIF_RESTORE_SIGMASK);
+ return -ERESTARTNOHAND;
+}
+#endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */
+
+asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
+{
+ struct timex txc;
+ int ret;
+
+ memset(&txc, 0, sizeof(struct timex));
+
+ if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
+ __get_user(txc.modes, &utp->modes) ||
+ __get_user(txc.offset, &utp->offset) ||
+ __get_user(txc.freq, &utp->freq) ||
+ __get_user(txc.maxerror, &utp->maxerror) ||
+ __get_user(txc.esterror, &utp->esterror) ||
+ __get_user(txc.status, &utp->status) ||
+ __get_user(txc.constant, &utp->constant) ||
+ __get_user(txc.precision, &utp->precision) ||
+ __get_user(txc.tolerance, &utp->tolerance) ||
+ __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __get_user(txc.tick, &utp->tick) ||
+ __get_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __get_user(txc.jitter, &utp->jitter) ||
+ __get_user(txc.shift, &utp->shift) ||
+ __get_user(txc.stabil, &utp->stabil) ||
+ __get_user(txc.jitcnt, &utp->jitcnt) ||
+ __get_user(txc.calcnt, &utp->calcnt) ||
+ __get_user(txc.errcnt, &utp->errcnt) ||
+ __get_user(txc.stbcnt, &utp->stbcnt))
+ return -EFAULT;
+
+ ret = do_adjtimex(&txc);
+
+ if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
+ __put_user(txc.modes, &utp->modes) ||
+ __put_user(txc.offset, &utp->offset) ||
+ __put_user(txc.freq, &utp->freq) ||
+ __put_user(txc.maxerror, &utp->maxerror) ||
+ __put_user(txc.esterror, &utp->esterror) ||
+ __put_user(txc.status, &utp->status) ||
+ __put_user(txc.constant, &utp->constant) ||
+ __put_user(txc.precision, &utp->precision) ||
+ __put_user(txc.tolerance, &utp->tolerance) ||
+ __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __put_user(txc.tick, &utp->tick) ||
+ __put_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __put_user(txc.jitter, &utp->jitter) ||
+ __put_user(txc.shift, &utp->shift) ||
+ __put_user(txc.stabil, &utp->stabil) ||
+ __put_user(txc.jitcnt, &utp->jitcnt) ||
+ __put_user(txc.calcnt, &utp->calcnt) ||
+ __put_user(txc.errcnt, &utp->errcnt) ||
+ __put_user(txc.stbcnt, &utp->stbcnt))
+ ret = -EFAULT;
+
+ return ret;
+}
+
+#ifdef CONFIG_NUMA
+asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
+ compat_uptr_t __user *pages32,
+ const int __user *nodes,
+ int __user *status,
+ int flags)
+{
+ const void __user * __user *pages;
+ int i;
+
+ pages = compat_alloc_user_space(nr_pages * sizeof(void *));
+ for (i = 0; i < nr_pages; i++) {
+ compat_uptr_t p;