diff options
Diffstat (limited to 'arch/ia64/kernel/signal.c')
-rw-r--r-- | arch/ia64/kernel/signal.c | 71 |
1 files changed, 23 insertions, 48 deletions
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 77f8b49..034b81d 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -41,47 +41,6 @@ # define GET_SIGSET(k,u) __get_user((k)->sig[0], &(u)->sig[0]) #endif -long -ia64_rt_sigsuspend (sigset_t __user *uset, size_t sigsetsize, struct sigscratch *scr) -{ - sigset_t oldset, set; - - /* XXX: Don't preclude handling different sized sigset_t's. */ - if (sigsetsize != sizeof(sigset_t)) - return -EINVAL; - - if (!access_ok(VERIFY_READ, uset, sigsetsize)) - return -EFAULT; - - if (GET_SIGSET(&set, uset)) - return -EFAULT; - - sigdelsetmask(&set, ~_BLOCKABLE); - - spin_lock_irq(¤t->sighand->siglock); - { - oldset = current->blocked; - current->blocked = set; - recalc_sigpending(); - } - spin_unlock_irq(¤t->sighand->siglock); - - /* - * The return below usually returns to the signal handler. We need to - * pre-set the correct error code here to ensure that the right values - * get saved in sigcontext by ia64_do_signal. - */ - scr->pt.r8 = EINTR; - scr->pt.r10 = -1; - - while (1) { - current->state = TASK_INTERRUPTIBLE; - schedule(); - if (ia64_do_signal(&oldset, scr, 1)) - return -EINTR; - } -} - asmlinkage long sys_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, long arg2, long arg3, long arg4, long arg5, long arg6, long arg7, @@ -478,10 +437,11 @@ handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigse * Note that `init' is a special process: it doesn't get signals it doesn't want to * handle. Thus you cannot kill init even with a SIGKILL even by mistake. */ -long -ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall) +void +ia64_do_signal (struct sigscratch *scr, long in_syscall) { struct k_sigaction ka; + sigset_t *oldset; siginfo_t info; long restart = in_syscall; long errno = scr->pt.r8; @@ -493,9 +453,11 @@ ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall) * doing anything if so. */ if (!user_mode(&scr->pt)) - return 0; + return; - if (!oldset) + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + oldset = ¤t->saved_sigmask; + else oldset = ¤t->blocked; /* @@ -558,8 +520,15 @@ ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall) * Whee! Actually deliver the signal. If the delivery failed, we need to * continue to iterate in this loop so we can deliver the SIGSEGV... */ - if (handle_signal(signr, &ka, &info, oldset, scr)) - return 1; + if (handle_signal(signr, &ka, &info, oldset, scr)) { + /* a signal was successfully delivered; the saved + * sigmask will have been stored in the signal frame, + * and will be restored by sigreturn, so we can simply + * clear the TIF_RESTORE_SIGMASK flag */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + clear_thread_flag(TIF_RESTORE_SIGMASK); + return; + } } /* Did we come from a system call? */ @@ -585,5 +554,11 @@ ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall) } } } - return 0; + + /* if there's no signal to deliver, we just put the saved sigmask + * back */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) { + clear_thread_flag(TIF_RESTORE_SIGMASK); + sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); + } } |