1 files changed, 103 insertions, 88 deletions

diff --git a/kernel/compat.c b/kernel/compat.c
index c9e2ec0b34a8..fc9eb093acd5 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -52,6 +52,64 @@ static int compat_put_timeval(struct compat_timeval __user *o,
                 put_user(i->tv_usec, &o->tv_usec)) ? -EFAULT : 0;
 }
 
+static int compat_get_timex(struct timex *txc, struct compat_timex __user *utp)
+{
+        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;
+
+        return 0;
+}
+
+static int compat_put_timex(struct compat_timex __user *utp, struct timex *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) ||
+                        __put_user(txc->tai, &utp->tai))
+                return -EFAULT;
+        return 0;
+}
+
 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
                 struct timezone __user *tz)
 {
@@ -235,6 +293,8 @@ asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
         return compat_jiffies_to_clock_t(jiffies);
 }
 
+#ifdef __ARCH_WANT_SYS_SIGPENDING
+
 /*
  * Assumption: old_sigset_t and compat_old_sigset_t are both
  * types that can be passed to put_user()/get_user().
@@ -254,6 +314,10 @@ asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
         return ret;
 }
 
+#endif
+
+#ifdef __ARCH_WANT_SYS_SIGPROCMASK
+
 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
                 compat_old_sigset_t __user *oset)
 {
@@ -275,6 +339,8 @@ asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
         return ret;
 }
 
+#endif
+
 asmlinkage long compat_sys_setrlimit(unsigned int resource,
                 struct compat_rlimit __user *rlim)
 {
@@ -617,6 +683,29 @@ long compat_sys_clock_gettime(clockid_t which_clock,
         return err;
 }
 
+long compat_sys_clock_adjtime(clockid_t which_clock,
+                struct compat_timex __user *utp)
+{
+        struct timex txc;
+        mm_segment_t oldfs;
+        int err, ret;
+
+        err = compat_get_timex(&txc, utp);
+        if (err)
+                return err;
+
+        oldfs = get_fs();
+        set_fs(KERNEL_DS);
+        ret = sys_clock_adjtime(which_clock, (struct timex __user *) &txc);
+        set_fs(oldfs);
+
+        err = compat_put_timex(utp, &txc);
+        if (err)
+                return err;
+
+        return ret;
+}
+
 long compat_sys_clock_getres(clockid_t which_clock,
                 struct compat_timespec __user *tp)
 {
@@ -809,10 +898,9 @@ compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
 {
         compat_sigset_t s32;
         sigset_t s;
-        int sig;
         struct timespec t;
         siginfo_t info;
-        long ret, timeout = 0;
+        long ret;
 
         if (sigsetsize != sizeof(sigset_t))
                 return -EINVAL;
@@ -820,51 +908,19 @@ compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
         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))
+                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(&current->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(&current->blocked, &current->blocked, &s);
-
-                        recalc_sigpending();
-                        spin_unlock_irq(&current->sighand->siglock);
-
-                        timeout = schedule_timeout_interruptible(timeout);
-
-                        spin_lock_irq(&current->sighand->siglock);
-                        sig = dequeue_signal(current, &s, &info);
-                        current->blocked = current->real_blocked;
-                        siginitset(&current->real_blocked, 0);
-                        recalc_sigpending();
-                }
-        }
-        spin_unlock_irq(&current->sighand->siglock);
+        ret = do_sigtimedwait(&s, &info, uts ? &t : NULL);
 
-        if (sig) {
-                ret = sig;
-                if (uinfo) {
-                        if (copy_siginfo_to_user32(uinfo, &info))
-                                ret = -EFAULT;
-                }
-        }else {
-                ret = timeout?-EINTR:-EAGAIN;
+        if (ret > 0 && uinfo) {
+                if (copy_siginfo_to_user32(uinfo, &info))
+                        ret = -EFAULT;
         }
+
         return ret;
 
 }
@@ -951,58 +1007,17 @@ asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat
 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
 {
         struct timex txc;
-        int ret;
-
-        memset(&txc, 0, sizeof(struct timex));
+        int err, ret;
 
-        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;
+        err = compat_get_timex(&txc, utp);
+        if (err)
+                return err;
 
         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) ||
-                        __put_user(txc.tai, &utp->tai))
-                ret = -EFAULT;
+        err = compat_put_timex(utp, &txc);
+        if (err)
+                return err;
 
         return ret;
 }