ia64: Use get_signal() signal_setup_done()

Use the more generic functions get_signal() signal_setup_done()
for signal delivery.
This inverts also the return codes of force_sigsegv_info()
and setup_frame() to follow the kernel convention.

Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index 33cab9a..6d92170 100644 (file)
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -309,12 +309,11 @@ force_sigsegv_info (int sig, void __user *addr)
        si.si_uid = from_kuid_munged(current_user_ns(), current_uid());
        si.si_addr = addr;
        force_sig_info(SIGSEGV, &si, current);
-       return 0;
+       return 1;
 }
 
 static long
-setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set,
-            struct sigscratch *scr)
+setup_frame(struct ksignal *ksig, sigset_t *set, struct sigscratch *scr)
 {
        extern char __kernel_sigtramp[];
        unsigned long tramp_addr, new_rbs = 0, new_sp;
@@ -323,7 +322,7 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set,
 
        new_sp = scr->pt.r12;
        tramp_addr = (unsigned long) __kernel_sigtramp;
-       if (ka->sa.sa_flags & SA_ONSTACK) {
+       if (ksig->ka.sa.sa_flags & SA_ONSTACK) {
                int onstack = sas_ss_flags(new_sp);
 
                if (onstack == 0) {
@@ -347,29 +346,29 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set,
                         */
                        check_sp = (new_sp - sizeof(*frame)) & -STACK_ALIGN;
                        if (!likely(on_sig_stack(check_sp)))
-                               return force_sigsegv_info(sig, (void __user *)
+                               return force_sigsegv_info(ksig->sig, (void __user *)
                                                          check_sp);
                }
        }
        frame = (void __user *) ((new_sp - sizeof(*frame)) & -STACK_ALIGN);
 
        if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-               return force_sigsegv_info(sig, frame);
+               return force_sigsegv_info(ksig->sig, frame);
 
-       err  = __put_user(sig, &frame->arg0);
+       err  = __put_user(ksig->sig, &frame->arg0);
        err |= __put_user(&frame->info, &frame->arg1);
        err |= __put_user(&frame->sc, &frame->arg2);
        err |= __put_user(new_rbs, &frame->sc.sc_rbs_base);
        err |= __put_user(0, &frame->sc.sc_loadrs);     /* initialize to zero */
-       err |= __put_user(ka->sa.sa_handler, &frame->handler);
+       err |= __put_user(ksig->ka.sa.sa_handler, &frame->handler);
 
-       err |= copy_siginfo_to_user(&frame->info, info);
+       err |= copy_siginfo_to_user(&frame->info, &ksig->info);
 
        err |= __save_altstack(&frame->sc.sc_stack, scr->pt.r12);
        err |= setup_sigcontext(&frame->sc, set, scr);
 
        if (unlikely(err))
-               return force_sigsegv_info(sig, frame);
+               return force_sigsegv_info(ksig->sig, frame);
 
        scr->pt.r12 = (unsigned long) frame - 16;       /* new stack pointer */
        scr->pt.ar_fpsr = FPSR_DEFAULT;                 /* reset fpsr for signal handler */
@@ -394,22 +393,20 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set,
 
 #if DEBUG_SIG
        printk("SIG deliver (%s:%d): sig=%d sp=%lx ip=%lx handler=%p\n",
-              current->comm, current->pid, sig, scr->pt.r12, frame->sc.sc_ip, frame->handler);
+              current->comm, current->pid, ksig->sig, scr->pt.r12, frame->sc.sc_ip, frame->handler);
 #endif
-       return 1;
+       return 0;
 }
 
 static long
-handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
-              struct sigscratch *scr)
+handle_signal (struct ksignal *ksig, struct sigscratch *scr)
 {
-       if (!setup_frame(sig, ka, info, sigmask_to_save(), scr))
-               return 0;
+       int ret = setup_frame(ksig, sigmask_to_save(), scr);
 
-       signal_delivered(sig, info, ka, &scr->pt,
-                                test_thread_flag(TIF_SINGLESTEP));
+       if (!ret)
+               signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
 
-       return 1;
+       return ret;
 }
 
 /*
@@ -419,17 +416,16 @@ handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
 void
 ia64_do_signal (struct sigscratch *scr, long in_syscall)
 {
-       struct k_sigaction ka;
-       siginfo_t info;
        long restart = in_syscall;
        long errno = scr->pt.r8;
+       struct ksignal ksig;
 
        /*
         * This only loops in the rare cases of handle_signal() failing, in which case we
         * need to push through a forced SIGSEGV.
         */
        while (1) {
-               int signr = get_signal_to_deliver(&info, &ka, &scr->pt, NULL);
+               get_signal(&ksig);
 
                /*
                 * get_signal_to_deliver() may have run a debugger (via notify_parent())
@@ -446,7 +442,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
                         */
                        restart = 0;
 
-               if (signr <= 0)
+               if (ksig.sig <= 0)
                        break;
 
                if (unlikely(restart)) {
@@ -458,7 +454,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
                                break;
 
                              case ERESTARTSYS:
-                               if ((ka.sa.sa_flags & SA_RESTART) == 0) {
+                               if ((ksig.ka.sa.sa_flags & SA_RESTART) == 0) {
                                        scr->pt.r8 = EINTR;
                                        /* note: scr->pt.r10 is already -1 */
                                        break;
@@ -473,7 +469,7 @@ ia64_do_signal (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, scr))
+               if (handle_signal(&ksig, scr))
                        return;
        }