signals: set_current_blocked() can use __set_current_blocked()
Cleanup. And I think we need more cleanups, in particular __set_current_blocked() and sigprocmask() should die. Nobody should ever block SIGKILL or SIGSTOP. - Change set_current_blocked() to use __set_current_blocked() - Change sys_sigprocmask() to use set_current_blocked(), this way it should not worry about SIGKILL/SIGSTOP. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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5ba53ff648
Коммит
0c4a842349
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@ -2528,11 +2528,8 @@ static void __set_task_blocked(struct task_struct *tsk, const sigset_t *newset)
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*/
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void set_current_blocked(sigset_t *newset)
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{
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struct task_struct *tsk = current;
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sigdelsetmask(newset, sigmask(SIGKILL) | sigmask(SIGSTOP));
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spin_lock_irq(&tsk->sighand->siglock);
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__set_task_blocked(tsk, newset);
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spin_unlock_irq(&tsk->sighand->siglock);
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__set_current_blocked(newset);
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}
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void __set_current_blocked(const sigset_t *newset)
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@ -3204,7 +3201,6 @@ SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, nset,
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if (nset) {
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if (copy_from_user(&new_set, nset, sizeof(*nset)))
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return -EFAULT;
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new_set &= ~(sigmask(SIGKILL) | sigmask(SIGSTOP));
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new_blocked = current->blocked;
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@ -3222,7 +3218,7 @@ SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, nset,
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return -EINVAL;
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}
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__set_current_blocked(&new_blocked);
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set_current_blocked(&new_blocked);
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}
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if (oset) {
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