diff options
| -rw-r--r-- | hurd/hurd/signal.h | 3 | ||||
| -rw-r--r-- | hurd/hurdsig.c | 22 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/trampoline.c | 17 |
3 files changed, 20 insertions, 22 deletions
diff --git a/hurd/hurd/signal.h b/hurd/hurd/signal.h index 2a0aa20..b31463c 100644 --- a/hurd/hurd/signal.h +++ b/hurd/hurd/signal.h @@ -327,7 +327,8 @@ extern void _hurd_internal_post_signal (struct hurd_sigstate *ss, struct machine_thread_all_state; extern struct sigcontext * -_hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler, +_hurd_setup_sighandler (struct hurd_sigstate *ss, const struct sigaction *action, + __sighandler_t handler, int signo, struct hurd_signal_detail *detail, int rpc_wait, struct machine_thread_all_state *state); diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c index 6fdbf38..dcc1da3 100644 --- a/hurd/hurdsig.c +++ b/hurd/hurdsig.c @@ -624,6 +624,13 @@ post_signal (struct hurd_sigstate *ss, enum { stop, ignore, core, term, handle } act; int ss_suspended; + /* sigaction for preemptors */ + struct sigaction preempt_sigaction = { + .sa_flags = SA_RESTART + }; + + struct sigaction *action; + /* Mark the signal as pending. */ void mark_pending (void) { @@ -780,12 +787,17 @@ post_signal (struct hurd_sigstate *ss, /* Ignore the signal altogether. */ act = ignore; else if (handler != SIG_ERR) - /* Run the preemption-provided handler. */ - act = handle; + { + /* Run the preemption-provided handler. */ + action = &preempt_sigaction; + act = handle; + } else { /* No preemption. Do normal handling. */ + action = & _hurd_sigstate_actions (ss) [signo]; + if (!untraced && __sigismember (&_hurdsig_traced, signo)) { /* We are being traced. Stop to tell the debugger of the signal. */ @@ -800,7 +812,7 @@ post_signal (struct hurd_sigstate *ss, return NULL; } - handler = _hurd_sigstate_actions (ss) [signo].sa_handler; + handler = action->sa_handler; if (handler == SIG_DFL) /* Figure out the default action for this signal. */ @@ -1072,7 +1084,7 @@ post_signal (struct hurd_sigstate *ss, /* Call the machine-dependent function to set the thread up to run the signal handler, and preserve its old context. */ - scp = _hurd_setup_sighandler (ss, handler, signo, detail, + scp = _hurd_setup_sighandler (ss, action, handler, signo, detail, wait_for_reply, &thread_state); if (scp == NULL) goto sigbomb; @@ -1111,8 +1123,6 @@ post_signal (struct hurd_sigstate *ss, } } - struct sigaction *action = & _hurd_sigstate_actions (ss) [signo]; - /* Backdoor extra argument to signal handler. */ scp->sc_error = detail->error; diff --git a/sysdeps/mach/hurd/i386/trampoline.c b/sysdeps/mach/hurd/i386/trampoline.c index 1777d07..a47bbe9 100644 --- a/sysdeps/mach/hurd/i386/trampoline.c +++ b/sysdeps/mach/hurd/i386/trampoline.c @@ -80,7 +80,8 @@ static void fill_ucontext (ucontext_t *uc, const struct sigcontext *sc) } struct sigcontext * -_hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler, +_hurd_setup_sighandler (struct hurd_sigstate *ss, const struct sigaction *action, + __sighandler_t handler, int signo, struct hurd_signal_detail *detail, volatile int rpc_wait, struct machine_thread_all_state *state) @@ -90,7 +91,6 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler, void firewall (void); extern const void _hurd_intr_rpc_msg_cx_sp; extern const void _hurd_intr_rpc_msg_sp_restored; - const struct sigaction *action; void *volatile sigsp; struct sigcontext *scp; struct @@ -123,11 +123,6 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler, siginfo_t siginfo; } *stackframe; - /* sigaction for preemptors */ - static const struct sigaction legacy_sigaction = { - .sa_flags = SA_RESTART - }; - if (ss->context) { /* We have a previous sigcontext that sigreturn was about @@ -170,14 +165,6 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler, the SP on sigreturn. */ state->basic.uesp = state->basic.ecx; - action = & _hurd_sigstate_actions (ss) [signo]; - if ( (action->sa_flags & SA_SIGINFO) - && handler != (__sighandler_t) action->sa_sigaction - || !(action->sa_flags & SA_SIGINFO) - && handler != action->sa_handler) - /* A signal preemptor took over, use legacy semantic. */ - action = &legacy_sigaction; - if ((action->sa_flags & SA_ONSTACK) && !(ss->sigaltstack.ss_flags & (SS_DISABLE|SS_ONSTACK))) { |