Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

Pull first series of signal handling cleanups from Al Viro:
 "This is just the first part of the queue (about a half of it);
  assorted fixes all over the place in signal handling.

  This one ends with all sigsuspend() implementations switched to
  generic one (->saved_sigmask-based).

  With this, a bunch of assorted old buglets are fixed and most of the
  missing bits of NOTIFY_RESUME hookup are in place.  Two more fixes sit
  in arm and um trees respectively, and there's a couple of broken ones
  that need obvious fixes - parisc and avr32 check TIF_NOTIFY_RESUME
  only on one of two codepaths; fixes for that will happen in the next
  series"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (55 commits)
  unicore32: if there's no handler we need to restore sigmask, syscall or no syscall
  xtensa: add handling of TIF_NOTIFY_RESUME
  microblaze: drop 'oldset' argument of do_notify_resume()
  microblaze: handle TIF_NOTIFY_RESUME
  score: add handling of NOTIFY_RESUME to do_notify_resume()
  m68k: add TIF_NOTIFY_RESUME and handle it.
  sparc: kill ancient comment in sparc_sigaction()
  h8300: missing checks of __get_user()/__put_user() return values
  frv: missing checks of __get_user()/__put_user() return values
  cris: missing checks of __get_user()/__put_user() return values
  powerpc: missing checks of __get_user()/__put_user() return values
  sh: missing checks of __get_user()/__put_user() return values
  sparc: missing checks of __get_user()/__put_user() return values
  avr32: struct old_sigaction is never used
  m32r: struct old_sigaction is never used
  xtensa: xtensa_sigaction doesn't exist
  alpha: tidy signal delivery up
  score: don't open-code force_sigsegv()
  cris: don't open-code force_sigsegv()
  blackfin: don't open-code force_sigsegv()
  ...

1 files changed, 3 insertions, 12 deletions

diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 12c1ed33dc18..4b9cb0d546d1 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -109,6 +109,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
                 sigframe_size = PARISC_RT_SIGFRAME_SIZE32;
 #endif
 
+        current_thread_info()->restart_block.fn = do_no_restart_syscall;
 
         /* Unwind the user stack to get the rt_sigframe structure. */
         frame = (struct rt_sigframe __user *)
@@ -131,10 +132,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
         }
                 
         sigdelsetmask(&set, ~_BLOCKABLE);
-        spin_lock_irq(&current->sighand->siglock);
-        current->blocked = set;
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
+        set_current_blocked(&set);
 
         /* Good thing we saved the old gr[30], eh? */
 #ifdef CONFIG_64BIT
@@ -454,12 +452,7 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
         if (!setup_rt_frame(sig, ka, info, oldset, regs, in_syscall))
                 return 0;
 
-        spin_lock_irq(&current->sighand->siglock);
-        sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
-        if (!(ka->sa.sa_flags & SA_NODEFER))
-                sigaddset(&current->blocked,sig);
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
+        block_sigmask(ka, sig);
 
         tracehook_signal_handler(sig, info, ka, regs, 
                 test_thread_flag(TIF_SINGLESTEP) ||
@@ -474,8 +467,6 @@ syscall_restart(struct pt_regs *regs, struct k_sigaction *ka)
         /* Check the return code */
         switch (regs->gr[28]) {
         case -ERESTART_RESTARTBLOCK:
-                current_thread_info()->restart_block.fn =
-                        do_no_restart_syscall;
         case -ERESTARTNOHAND:
                 DBG(1,"ERESTARTNOHAND: returning -EINTR\n");
                 regs->gr[28] = -EINTR;