[ARM] Re-use sigframe within rt_sigframe
sigframe is now a contained subset of rt_sigframe, so we can start to re-use code which accesses sigframe data for both rt and non-rt signals. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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7d4fdc19fc
Коммит
cb3504e8fa
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@ -200,9 +200,7 @@ struct sigframe {
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struct rt_sigframe {
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struct siginfo info;
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struct ucontext uc;
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unsigned long retcode[2];
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struct aux_sigframe aux __attribute__((aligned(8)));
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struct sigframe sig;
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};
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static int
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@ -308,7 +306,7 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
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if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
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goto badframe;
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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if (__copy_from_user(&set, &frame->sig.uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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@ -317,10 +315,10 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
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recalc_sigpending();
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spin_unlock_irq(¤t->sighand->siglock);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &frame->aux))
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if (restore_sigcontext(regs, &frame->sig.uc.uc_mcontext, &frame->sig.aux))
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goto badframe;
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if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT)
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if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT)
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goto badframe;
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/* Send SIGTRAP if we're single-stepping */
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@ -503,21 +501,21 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
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err |= copy_siginfo_to_user(&frame->info, info);
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__put_user_error(0, &frame->uc.uc_flags, err);
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__put_user_error(NULL, &frame->uc.uc_link, err);
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__put_user_error(0, &frame->sig.uc.uc_flags, err);
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__put_user_error(NULL, &frame->sig.uc.uc_link, err);
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memset(&stack, 0, sizeof(stack));
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stack.ss_sp = (void __user *)current->sas_ss_sp;
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stack.ss_flags = sas_ss_flags(regs->ARM_sp);
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stack.ss_size = current->sas_ss_size;
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err |= __copy_to_user(&frame->uc.uc_stack, &stack, sizeof(stack));
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err |= __copy_to_user(&frame->sig.uc.uc_stack, &stack, sizeof(stack));
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err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->aux,
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err |= setup_sigcontext(&frame->sig.uc.uc_mcontext, &frame->sig.aux,
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regs, set->sig[0]);
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err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
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err |= __copy_to_user(&frame->sig.uc.uc_sigmask, set, sizeof(*set));
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if (err == 0)
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err = setup_return(regs, ka, frame->retcode, frame, usig);
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err = setup_return(regs, ka, frame->sig.retcode, frame, usig);
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if (err == 0) {
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/*
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@ -526,7 +524,7 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
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* -- Peter Maydell <pmaydell@chiark.greenend.org.uk> 2000-12-06
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*/
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regs->ARM_r1 = (unsigned long)&frame->info;
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regs->ARM_r2 = (unsigned long)&frame->uc;
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regs->ARM_r2 = (unsigned long)&frame->sig.uc;
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}
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return err;
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