[ARM] Merge sigcontext and sigmask members of sigframe

ucontext contains both the sigcontext and sigmask structures, and
is also used for rt signal contexts.  Re-use this structure for
non-rt signals.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 7a4213e..9f1e176 100644 (file)
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -193,8 +193,7 @@ struct aux_sigframe {
  * Do a signal return; undo the signal stack.  These are aligned to 64-bit.
  */
 struct sigframe {
-       struct sigcontext sc;
-       sigset_t sigmask;
+       struct ucontext uc;
        unsigned long retcode[2];
        struct aux_sigframe aux __attribute__((aligned(8)));
 };
@@ -264,7 +263,7 @@ asmlinkage int sys_sigreturn(struct pt_regs *regs)
 
        if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
                goto badframe;
-       if (__copy_from_user(&set, &frame->sigmask, sizeof(set)))
+       if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
                goto badframe;
 
        sigdelsetmask(&set, ~_BLOCKABLE);
@@ -273,7 +272,7 @@ asmlinkage int sys_sigreturn(struct pt_regs *regs)
        recalc_sigpending();
        spin_unlock_irq(&current->sighand->siglock);
 
-       if (restore_sigcontext(regs, &frame->sc, &frame->aux))
+       if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &frame->aux))
                goto badframe;
 
        /* Send SIGTRAP if we're single-stepping */
@@ -482,8 +481,8 @@ setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, struct pt_regs *reg
        if (!frame)
                return 1;
 
-       err |= setup_sigcontext(&frame->sc, &frame->aux, regs, set->sig[0]);
-       err |= __copy_to_user(&frame->sigmask, set, sizeof(*set));
+       err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->aux, regs, set->sig[0]);
+       err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 
        if (err == 0)
                err = setup_return(regs, ka, frame->retcode, frame, usig);