[PATCH] s390: fix compile with VIRT_CPU_ACCOUNTING=n

[pandora-kernel.git] / fs / compat.c

diff --git a/fs/compat.c b/fs/compat.c
index 70c5af4..5333c7d 100644 (file)
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1751,11 +1751,15 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
        ret = compat_core_sys_select(n, inp, outp, exp, &timeout);
 
        if (tvp) {
+               struct compat_timeval rtv;
+
                if (current->personality & STICKY_TIMEOUTS)
                        goto sticky;
-               tv.tv_usec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ));
-               tv.tv_sec = timeout;
-               if (copy_to_user(tvp, &tv, sizeof(tv))) {
+               rtv.tv_usec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ));
+               rtv.tv_sec = timeout;
+               if (compat_timeval_compare(&rtv, &tv) >= 0)
+                       rtv = tv;
+               if (copy_to_user(tvp, &rtv, sizeof(rtv))) {
 sticky:
                        /*
                         * If an application puts its timeval in read-only
@@ -1822,13 +1826,17 @@ asmlinkage long compat_sys_pselect7(int n, compat_ulong_t __user *inp,
        } while (!ret && !timeout && tsp && (ts.tv_sec || ts.tv_nsec));
 
        if (tsp && !(current->personality & STICKY_TIMEOUTS)) {
-               ts.tv_sec += timeout / HZ;
-               ts.tv_nsec += (timeout % HZ) * (1000000000/HZ);
-               if (ts.tv_nsec >= 1000000000) {
-                       ts.tv_sec++;
-                       ts.tv_nsec -= 1000000000;
+               struct compat_timespec rts;
+
+               rts.tv_sec = timeout / HZ;
+               rts.tv_nsec = (timeout % HZ) * (NSEC_PER_SEC/HZ);
+               if (rts.tv_nsec >= NSEC_PER_SEC) {
+                       rts.tv_sec++;
+                       rts.tv_nsec -= NSEC_PER_SEC;
                }
-               (void)copy_to_user(tsp, &ts, sizeof(ts));
+               if (compat_timespec_compare(&rts, &ts) >= 0)
+                       rts = ts;
+               copy_to_user(tsp, &rts, sizeof(rts));
        }
 
        if (ret == -ERESTARTNOHAND) {
@@ -1918,12 +1926,17 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
                sigprocmask(SIG_SETMASK, &sigsaved, NULL);
 
        if (tsp && timeout >= 0) {
+               struct compat_timespec rts;
+
                if (current->personality & STICKY_TIMEOUTS)
                        goto sticky;
                /* Yes, we know it's actually an s64, but it's also positive. */
-               ts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) * 1000;
-               ts.tv_sec = timeout;
-               if (copy_to_user(tsp, &ts, sizeof(ts))) {
+               rts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) *
+                                       1000;
+               rts.tv_sec = timeout;
+               if (compat_timespec_compare(&rts, &ts) >= 0)
+                       rts = ts;
+               if (copy_to_user(tsp, &rts, sizeof(rts))) {
 sticky:
                        /*
                         * If an application puts its timeval in read-only