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authorMatt Fleming <matt.fleming@intel.com>2012-05-11 10:58:00 +1000
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-21 23:52:35 -0400
commitf3b5e822739c70663aee8584b7993afe055431c9 (patch)
tree4a28ae3af58dfdceefa590136a0e0ea4a6a191c0 /arch/cris/arch-v10
parent7a076e4ff07ffc2c219285ec57aed8bdde86cb37 (diff)
downloadlinux-f3b5e822739c70663aee8584b7993afe055431c9.tar.gz
cris: 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: Mikael Starvik <starvik@axis.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> 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/cris/arch-v10')
-rw-r--r--arch/cris/arch-v10/kernel/signal.c22
1 files changed, 5 insertions, 17 deletions
diff --git a/arch/cris/arch-v10/kernel/signal.c b/arch/cris/arch-v10/kernel/signal.c
index 170f4970d59..df40fa80480 100644
--- a/arch/cris/arch-v10/kernel/signal.c
+++ b/arch/cris/arch-v10/kernel/signal.c
@@ -177,10 +177,7 @@ asmlinkage int sys_sigreturn(long r10, long r11, long r12, long r13, long mof,
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))
goto badframe;
@@ -216,10 +213,7 @@ asmlinkage int sys_rt_sigreturn(long r10, long r11, long r12, long r13,
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->uc.uc_mcontext))
goto badframe;
@@ -461,15 +455,9 @@ static inline int handle_signal(int canrestart, unsigned long 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;
}