From patchwork Mon Jul 21 14:03:01 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Weinberger X-Patchwork-Id: 4595501 Return-Path: X-Original-To: patchwork-linux-parisc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 22F15C0514 for ; Mon, 21 Jul 2014 14:13:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3795A20103 for ; Mon, 21 Jul 2014 14:13:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1ADC420154 for ; Mon, 21 Jul 2014 14:13:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932423AbaGUONm (ORCPT ); Mon, 21 Jul 2014 10:13:42 -0400 Received: from mail.sigma-star.at ([95.130.255.111]:14399 "EHLO mail.sigma-star.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932508AbaGUOEI (ORCPT ); Mon, 21 Jul 2014 10:04:08 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.sigma-star.at (Postfix) with ESMTP id 9AC4B16B42B1; Mon, 21 Jul 2014 16:04:05 +0200 (CEST) X-Virus-Scanned: amavisd-new at mail.sigma-star.at Received: from localhost.localdomain (chello213047235169.tirol.surfer.at [213.47.235.169]) by mail.sigma-star.at (Postfix) with ESMTPSA id 26ECE16B42AB; Mon, 21 Jul 2014 16:04:03 +0200 (CEST) From: Richard Weinberger To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Richard Weinberger , jejb@parisc-linux.org, deller@gmx.de, linux-parisc@vger.kernel.org Subject: [PATCH 15/43] parisc: Use get_signal() signal_setup_done() Date: Mon, 21 Jul 2014 16:03:01 +0200 Message-Id: <1405951409-16953-16-git-send-email-richard@sigma-star.at> X-Mailer: git-send-email 1.8.4.5 In-Reply-To: <1405951409-16953-1-git-send-email-richard@sigma-star.at> References: <1405951409-16953-1-git-send-email-richard@sigma-star.at> Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Richard Weinberger Use the more generic functions get_signal() signal_setup_done() for signal delivery. Signed-off-by: Richard Weinberger Acked-by: Helge Deller --- arch/parisc/kernel/signal.c | 58 +++++++++++++++++++-------------------------- 1 file changed, 24 insertions(+), 34 deletions(-) diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index 1cba8f2..012d4fa 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -227,8 +227,8 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, int in_sysc } static long -setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs, int in_syscall) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs, + int in_syscall) { struct rt_sigframe __user *frame; unsigned long rp, usp; @@ -241,10 +241,10 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, usp = (regs->gr[30] & ~(0x01UL)); /*FIXME: frame_size parameter is unused, remove it. */ - frame = get_sigframe(ka, usp, sizeof(*frame)); + frame = get_sigframe(&ksig->ka, usp, sizeof(*frame)); DBG(1,"SETUP_RT_FRAME: START\n"); - DBG(1,"setup_rt_frame: frame %p info %p\n", frame, info); + DBG(1,"setup_rt_frame: frame %p info %p\n", frame, ksig->info); #ifdef CONFIG_64BIT @@ -253,7 +253,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (is_compat_task()) { DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &compat_frame->info); - err |= copy_siginfo_to_user32(&compat_frame->info, info); + err |= copy_siginfo_to_user32(&compat_frame->info, &ksig->info); err |= __compat_save_altstack( &compat_frame->uc.uc_stack, regs->gr[30]); DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &compat_frame->uc); DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &compat_frame->uc.uc_mcontext); @@ -265,7 +265,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif { DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &frame->info); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= __save_altstack(&frame->uc.uc_stack, regs->gr[30]); DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &frame->uc); DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &frame->uc.uc_mcontext); @@ -275,7 +275,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. The first words of tramp are used to @@ -312,9 +312,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, rp = (unsigned long) &frame->tramp[SIGRESTARTBLOCK_TRAMP]; if (err) - goto give_sigsegv; + return -EFAULT; - haddr = A(ka->sa.sa_handler); + haddr = A(ksig->ka.sa.sa_handler); /* The sa_handler may be a pointer to a function descriptor */ #ifdef CONFIG_64BIT if (is_compat_task()) { @@ -326,7 +326,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc)); if (err) - goto give_sigsegv; + return -EFAULT; haddr = fdesc.addr; regs->gr[19] = fdesc.gp; @@ -339,7 +339,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc)); if (err) - goto give_sigsegv; + return -EFAULT; haddr = fdesc.addr; regs->gr[19] = fdesc.gp; @@ -386,7 +386,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } regs->gr[2] = rp; /* userland return pointer */ - regs->gr[26] = sig; /* signal number */ + regs->gr[26] = ksig->sig; /* signal number */ #ifdef CONFIG_64BIT if (is_compat_task()) { @@ -410,11 +410,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, current->comm, current->pid, frame, regs->gr[30], regs->iaoq[0], regs->iaoq[1], rp); - return 1; - -give_sigsegv: - DBG(1,"setup_rt_frame: sending SIGSEGV\n"); - force_sigsegv(sig, current); return 0; } @@ -423,20 +418,19 @@ give_sigsegv: */ static void -handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs, int in_syscall) +handle_signal(struct ksignal *ksig, struct pt_regs *regs, int in_syscall) { + int ret; sigset_t *oldset = sigmask_to_save(); + DBG(1,"handle_signal: sig=%ld, ka=%p, info=%p, oldset=%p, regs=%p\n", - sig, ka, info, oldset, regs); + ksig->sig, ksig->ka, ksig->info, oldset, regs); /* Set up the stack frame */ - if (!setup_rt_frame(sig, ka, info, oldset, regs, in_syscall)) - return; + ret = setup_rt_frame(ksig, oldset, regs, in_syscall); - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP) || - test_thread_flag(TIF_BLOCKSTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP) || + test_thread_flag(TIF_BLOCKSTEP)); DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n", regs->gr[28]); @@ -544,22 +538,18 @@ insert_restart_trampoline(struct pt_regs *regs) asmlinkage void do_signal(struct pt_regs *regs, long in_syscall) { - siginfo_t info; - struct k_sigaction ka; - int signr; + struct ksignal ksig; DBG(1,"\ndo_signal: regs=0x%p, sr7 %#lx, in_syscall=%d\n", regs, regs->sr[7], in_syscall); - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]); - - if (signr > 0) { + if (get_signal(&ksig)) { + DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]); /* Restart a system call if necessary. */ if (in_syscall) - syscall_restart(regs, &ka); + syscall_restart(regs, &ksig.ka); - handle_signal(signr, &info, &ka, regs, in_syscall); + handle_signal(&ksig, regs, in_syscall); return; }