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authorMatt Fleming <matt.fleming@intel.com>2012-05-11 10:58:06 +1000
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-21 23:52:32 -0400
commit97c47bb70728c765d6cbf582759f9170fe152ded (patch)
tree1a1280d64288ea4adcd01bd3d9eca46213c1f2ea /arch/h8300
parent9ae36796020998fcd07431934be6b160e9c7bfce (diff)
downloadlinux-97c47bb70728c765d6cbf582759f9170fe152ded.tar.bz2
h8300: 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> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> 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/h8300')
-rw-r--r--arch/h8300/kernel/signal.c33
1 files changed, 9 insertions, 24 deletions
diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c
index af842c369d24..cd63f5a6c8fe 100644
--- a/arch/h8300/kernel/signal.c
+++ b/arch/h8300/kernel/signal.c
@@ -57,14 +57,13 @@ asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
asmlinkage int do_sigsuspend(struct pt_regs *regs)
{
old_sigset_t mask = regs->er3;
- sigset_t saveset;
+ sigset_t saveset, blocked;
- mask &= _BLOCKABLE;
- spin_lock_irq(&current->sighand->siglock);
saveset = current->blocked;
- siginitset(&current->blocked, mask);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+
+ mask &= _BLOCKABLE;
+ siginitset(&blocked, mask);
+ set_current_blocked(&blocked);
regs->er0 = -EINTR;
while (1) {
@@ -90,11 +89,8 @@ do_rt_sigsuspend(struct pt_regs *regs)
return -EFAULT;
sigdelsetmask(&newset, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
saveset = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ set_current_blocked(&newset);
regs->er0 = -EINTR;
while (1) {
@@ -232,10 +228,7 @@ asmlinkage int do_sigreturn(unsigned long __unused,...)
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(regs, &frame->sc, &er0))
goto badframe;
@@ -260,10 +253,7 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused,...)
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
- spin_unlock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_lock_irq(&current->sighand->siglock);
+ set_current_blocked(&set);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &er0))
goto badframe;
@@ -489,12 +479,7 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
else
setup_frame(sig, ka, oldset, regs);
- 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);
}
/*