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[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>
This commit is contained in:
Russell King 2006-06-15 20:18:25 +01:00 committed by Russell King
parent 7d4fdc19fc
commit cb3504e8fa
1 changed files with 11 additions and 13 deletions
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24
arch/arm/kernel/signal.c
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@ -200,9 +200,7 @@ struct sigframe {
struct rt_sigframe {
struct siginfo info;
struct ucontext uc;
unsigned long retcode[2];
struct aux_sigframe aux __attribute__((aligned(8)));
struct sigframe sig;
};
static int
@ -308,7 +306,7 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
if (__copy_from_user(&set, &frame->sig.uc.uc_sigmask, sizeof(set)))
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
@ -317,10 +315,10 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &frame->aux))
if (restore_sigcontext(regs, &frame->sig.uc.uc_mcontext, &frame->sig.aux))
goto badframe;
if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT)
if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT)
goto badframe;
/* Send SIGTRAP if we're single-stepping */
@ -503,21 +501,21 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
err |= copy_siginfo_to_user(&frame->info, info);
__put_user_error(0, &frame->uc.uc_flags, err);
__put_user_error(NULL, &frame->uc.uc_link, err);
__put_user_error(0, &frame->sig.uc.uc_flags, err);
__put_user_error(NULL, &frame->sig.uc.uc_link, err);
memset(&stack, 0, sizeof(stack));
stack.ss_sp = (void __user *)current->sas_ss_sp;
stack.ss_flags = sas_ss_flags(regs->ARM_sp);
stack.ss_size = current->sas_ss_size;
err |= __copy_to_user(&frame->uc.uc_stack, &stack, sizeof(stack));
err |= __copy_to_user(&frame->sig.uc.uc_stack, &stack, sizeof(stack));
err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->aux,
err |= setup_sigcontext(&frame->sig.uc.uc_mcontext, &frame->sig.aux,
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
err |= __copy_to_user(&frame->sig.uc.uc_sigmask, set, sizeof(*set));
if (err == 0)
err = setup_return(regs, ka, frame->retcode, frame, usig);
err = setup_return(regs, ka, frame->sig.retcode, frame, usig);
if (err == 0) {
/*
@ -526,7 +524,7 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
* -- Peter Maydell <pmaydell@chiark.greenend.org.uk> 2000-12-06
*/
regs->ARM_r1 = (unsigned long)&frame->info;
regs->ARM_r2 = (unsigned long)&frame->uc;
regs->ARM_r2 = (unsigned long)&frame->sig.uc;
}
return err;