diff options
| -rw-r--r-- | kernel/signal.c | 37 |
1 files changed, 16 insertions, 21 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index e7ee4e642c5..c0af959b853 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2889,29 +2889,28 @@ SYSCALL_DEFINE1(sigpending, old_sigset_t __user *, set) /** * sys_sigprocmask - examine and change blocked signals * @how: whether to add, remove, or set signals - * @set: signals to add or remove (if non-null) + * @nset: signals to add or remove (if non-null) * @oset: previous value of signal mask if non-null * * Some platforms have their own version with special arguments; * others support only sys_rt_sigprocmask. */ -SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, set, +SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, nset, old_sigset_t __user *, oset) { - int error; old_sigset_t old_set, new_set; + int error; - if (set) { - error = -EFAULT; - if (copy_from_user(&new_set, set, sizeof(*set))) - goto out; - new_set &= ~(sigmask(SIGKILL) | sigmask(SIGSTOP)); + old_set = current->blocked.sig[0]; - spin_lock_irq(¤t->sighand->siglock); - old_set = current->blocked.sig[0]; + if (nset) { + if (copy_from_user(&new_set, nset, sizeof(*nset))) + return -EFAULT; + new_set &= ~(sigmask(SIGKILL) | sigmask(SIGSTOP)); error = 0; + spin_lock_irq(¤t->sighand->siglock); switch (how) { default: error = -EINVAL; @@ -2930,19 +2929,15 @@ SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, set, recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); if (error) - goto out; - if (oset) - goto set_old; - } else if (oset) { - old_set = current->blocked.sig[0]; - set_old: - error = -EFAULT; + return error; + } + + if (oset) { if (copy_to_user(oset, &old_set, sizeof(*oset))) - goto out; + return -EFAULT; } - error = 0; -out: - return error; + + return 0; } #endif /* __ARCH_WANT_SYS_SIGPROCMASK */ |