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authorMatt Fleming <matt.fleming@intel.com>2012-05-11 04:57:59 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-22 07:52:35 +0400
commit00f35785fae2ae8a37b3a3dc1f2dc05e8f232bef (patch)
treebb38c6dea7898fba32d5b445001869a59d184b49 /arch/mn10300
parentf3b5e822739c70663aee8584b7993afe055431c9 (diff)
downloadlinux-00f35785fae2ae8a37b3a3dc1f2dc05e8f232bef.tar.xz
mn10300: 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: Koichi Yasutake <yasutake.koichi@jp.panasonic.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/mn10300')
-rw-r--r--arch/mn10300/kernel/signal.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c
index 50eb94a05826..890cf91767cc 100644
--- a/arch/mn10300/kernel/signal.c
+++ b/arch/mn10300/kernel/signal.c
@@ -164,10 +164,7 @@ asmlinkage long 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(current_frame(), &frame->sc, &d0))
goto badframe;
@@ -195,10 +192,7 @@ asmlinkage long 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(current_frame(), &frame->uc.uc_mcontext, &d0))
goto badframe;
@@ -468,15 +462,8 @@ static int handle_signal(int sig,
else
ret = setup_frame(sig, ka, oldset, regs);
- 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;
}