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authorMatt Fleming <matt.fleming@intel.com>2012-05-11 00:58:52 (GMT)
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-22 03:52:31 (GMT)
commit7ebe0c5d7205a356532f2321e03d85bfd2443374 (patch)
tree1dfd974eba17b8acb92f3c05a4e50b7f0945f95d /arch/frv/kernel
parentade7728b4e9aac4cc82117e3e35c5745b7d16037 (diff)
downloadlinux-7ebe0c5d7205a356532f2321e03d85bfd2443374.tar.xz
frv: use set_current_blocked() and block_sigmask()
As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/frv/kernel')
-rw-r--r--arch/frv/kernel/signal.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c
index df957c7..b46a820 100644
--- a/arch/frv/kernel/signal.c
+++ b/arch/frv/kernel/signal.c
@@ -150,10 +150,7 @@ asmlinkage int sys_sigreturn(void)
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ set_current_blocked(&set);
if (restore_sigcontext(&frame->sc, &gr8))
goto badframe;
@@ -176,10 +173,7 @@ asmlinkage int sys_rt_sigreturn(void)
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ set_current_blocked(&set);
if (restore_sigcontext(&frame->uc.uc_mcontext, &gr8))
goto badframe;
@@ -466,15 +460,8 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
else
ret = setup_frame(sig, ka, oldset);
- if (ret == 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);
- }
+ if (ret == 0)
+ block_sigmask(ka, sig);
return ret;