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authorMatt Fleming <matt.fleming@intel.com>2012-05-11 02:58:11 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-22 05:52:31 +0200
commit8e3f9f65cb722d3663032b97ca76377b864f3835 (patch)
treed761ae5382940baf4709f2a90d2362e9f7588f18 /arch/blackfin
parentfrv: use set_current_blocked() and block_sigmask() (diff)
downloadlinux-8e3f9f65cb722d3663032b97ca76377b864f3835.tar.xz
linux-8e3f9f65cb722d3663032b97ca76377b864f3835.zip
blackfin: 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: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Acked-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/kernel/signal.c17
1 files changed, 4 insertions, 13 deletions
diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index d536f35d1f43..05ece020f8a3 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -99,10 +99,7 @@ asmlinkage int do_rt_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 (rt_restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
goto badframe;
@@ -266,15 +263,9 @@ handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
/* set up the stack frame */
ret = setup_rt_frame(sig, ka, info, 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;
}