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authorLinus Torvalds <torvalds@linux-foundation.org>2012-06-01 11:53:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-06-01 11:53:44 -0700
commit86c47b70f62a7072d441ba212aab33c2f82627c2 (patch)
treed03988bd2226966352bb7f3c2e82ff545353d2c4 /arch/alpha
parent1193755ac6328ad240ba987e6ec41d5e8baf0680 (diff)
parent44fbbb3dc687c9709a6f2236197316e5c79ab1eb (diff)
downloadlinux-linaro-stable-86c47b70f62a7072d441ba212aab33c2f82627c2.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull third pile of signal handling patches from Al Viro: "This time it's mostly helpers and conversions to them; there's a lot of stuff remaining in the tree, but that'll either go in -rc2 (isolated bug fixes, ideally via arch maintainers' trees) or will sit there until the next cycle." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: x86: get rid of calling do_notify_resume() when returning to kernel mode blackfin: check __get_user() return value whack-a-mole with TIF_FREEZE FRV: Optimise the system call exit path in entry.S [ver #2] FRV: Shrink TIF_WORK_MASK [ver #2] FRV: Prevent syscall exit tracing and notify_resume at end of kernel exceptions new helper: signal_delivered() powerpc: get rid of restore_sigmask() most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set set_restore_sigmask() is never called without SIGPENDING (and never should be) TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is set don't call try_to_freeze() from do_signal() pull clearing RESTORE_SIGMASK into block_sigmask() sh64: failure to build sigframe != signal without handler openrisc: tracehook_signal_handler() is supposed to be called on success new helper: sigmask_to_save() new helper: restore_saved_sigmask() new helpers: {clear,test,test_and_clear}_restore_sigmask() HAVE_RESTORE_SIGMASK is defined on all architectures now
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/kernel/signal.c18
1 files changed, 3 insertions, 15 deletions
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index f6db3032ddf0..a8c97d42ec8e 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -226,7 +226,6 @@ do_sigreturn(struct sigcontext __user *sc, struct pt_regs *regs,
if (__get_user(set.sig[0], &sc->sc_mask))
goto give_sigsegv;
- sigdelsetmask(&set, ~_BLOCKABLE);
set_current_blocked(&set);
if (restore_sigcontext(sc, regs, sw))
@@ -261,7 +260,6 @@ do_rt_sigreturn(struct rt_sigframe __user *frame, struct pt_regs *regs,
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto give_sigsegv;
- sigdelsetmask(&set, ~_BLOCKABLE);
set_current_blocked(&set);
if (restore_sigcontext(&frame->uc.uc_mcontext, regs, sw))
@@ -468,12 +466,9 @@ static inline void
handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
struct pt_regs * regs, struct switch_stack *sw)
{
- sigset_t *oldset = &current->blocked;
+ sigset_t *oldset = sigmask_to_save();
int ret;
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- oldset = &current->saved_sigmask;
-
if (ka->sa.sa_flags & SA_SIGINFO)
ret = setup_rt_frame(sig, ka, info, oldset, regs, sw);
else
@@ -483,12 +478,7 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
force_sigsegv(sig, current);
return;
}
- block_sigmask(ka, sig);
- /* A signal was successfully delivered, and the
- saved sigmask was stored on the signal frame,
- and will be restored by sigreturn. So we can
- simply clear the restore sigmask flag. */
- clear_thread_flag(TIF_RESTORE_SIGMASK);
+ signal_delivered(sig, info, ka, regs, 0);
}
static inline void
@@ -572,9 +562,7 @@ do_signal(struct pt_regs * regs, struct switch_stack * sw,
}
/* If there's no signal to deliver, we just restore the saved mask. */
- if (test_and_clear_thread_flag(TIF_RESTORE_SIGMASK))
- set_current_blocked(&current->saved_sigmask);
-
+ restore_saved_sigmask();
if (single_stepping)
ptrace_set_bpt(current); /* re-set breakpoint */
}