static int do_signal(struct pt_regs *regs) { sigset_t *oldset; siginfo_t info; int signr; struct k_sigaction ka; int ret; int is32 = is_32bit_task(); if (current_thread_info()->local_flags & _TLF_RESTORE_SIGMASK) oldset = ¤t->saved_sigmask; else oldset = ¤t->blocked; signr = get_signal_to_deliver(&info, &ka, regs, NULL); check_syscall_restart(regs, &ka, signr > 0); if (signr <= 0) { struct thread_info *ti = current_thread_info(); if (ti->local_flags & _TLF_RESTORE_SIGMASK) { ti->local_flags &= ~_TLF_RESTORE_SIGMASK; sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); } regs->trap = 0; return 0; } #ifndef CONFIG_PPC_ADV_DEBUG_REGS if (current->thread.dabr) set_dabr(current->thread.dabr); #endif thread_change_pc(current, regs); if (is32) { if (ka.sa.sa_flags & SA_SIGINFO) ret = handle_rt_signal32(signr, &ka, &info, oldset, regs); else ret = handle_signal32(signr, &ka, &info, oldset, regs); } else { ret = handle_rt_signal64(signr, &ka, &info, oldset, regs); } regs->trap = 0; if (ret) { block_sigmask(&ka, signr); current_thread_info()->local_flags &= ~_TLF_RESTORE_SIGMASK; tracehook_signal_handler(signr, &info, &ka, regs, test_thread_flag(TIF_SINGLESTEP)); } return ret; }
static int do_signal(struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); siginfo_t info; int signr; struct k_sigaction ka; int ret; int is32 = is_32bit_task(); signr = get_signal_to_deliver(&info, &ka, regs, NULL); /* Is there any syscall restart business here ? */ check_syscall_restart(regs, &ka, signr > 0); if (signr <= 0) { /* No signal to deliver -- put the saved sigmask back */ restore_saved_sigmask(); regs->trap = 0; return 0; /* no signals delivered */ } #ifndef CONFIG_PPC_ADV_DEBUG_REGS /* * Reenable the DABR before delivering the signal to * user space. The DABR will have been cleared if it * triggered inside the kernel. */ if (current->thread.hw_brk.address && current->thread.hw_brk.type) set_breakpoint(¤t->thread.hw_brk); #endif /* Re-enable the breakpoints for the signal stack */ thread_change_pc(current, regs); if (is32) { if (ka.sa.sa_flags & SA_SIGINFO) ret = handle_rt_signal32(signr, &ka, &info, oldset, regs); else ret = handle_signal32(signr, &ka, &info, oldset, regs); } else { ret = handle_rt_signal64(signr, &ka, &info, oldset, regs); } regs->trap = 0; if (ret) { signal_delivered(signr, &info, &ka, regs, test_thread_flag(TIF_SINGLESTEP)); } return ret; }
int do_signal(sigset_t *oldset, struct pt_regs *regs) { siginfo_t info; int signr; struct k_sigaction ka; int ret; int is32 = is_32bit_task(); if (test_thread_flag(TIF_RESTORE_SIGMASK)) oldset = ¤t->saved_sigmask; else if (!oldset) oldset = ¤t->blocked; signr = get_signal_to_deliver(&info, &ka, regs, NULL); /* Is there any syscall restart business here ? */ check_syscall_restart(regs, &ka, signr > 0); if (signr <= 0) { /* No signal to deliver -- put the saved sigmask back */ if (test_thread_flag(TIF_RESTORE_SIGMASK)) { clear_thread_flag(TIF_RESTORE_SIGMASK); sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); } return 0; /* no signals delivered */ } /* * Reenable the DABR before delivering the signal to * user space. The DABR will have been cleared if it * triggered inside the kernel. */ if (current->thread.dabr) set_dabr(current->thread.dabr); if (is32) { if (ka.sa.sa_flags & SA_SIGINFO) ret = handle_rt_signal32(signr, &ka, &info, oldset, regs); else ret = handle_signal32(signr, &ka, &info, oldset, regs); } else { ret = handle_rt_signal64(signr, &ka, &info, oldset, regs); } if (ret) { spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked, ¤t->blocked, &ka.sa.sa_mask); if (!(ka.sa.sa_flags & SA_NODEFER)) sigaddset(¤t->blocked, signr); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); /* * A signal was successfully delivered; the saved sigmask is in * its frame, and we can clear the TIF_RESTORE_SIGMASK flag. */ if (test_thread_flag(TIF_RESTORE_SIGMASK)) clear_thread_flag(TIF_RESTORE_SIGMASK); } return ret; }
static int do_signal_pending(sigset_t *oldset, struct pt_regs *regs) { siginfo_t info; int signr; struct k_sigaction ka; int ret; int is32 = is_32bit_task(); #ifdef CONFIG_PREEMPT_RT /* * Fully-preemptible kernel does not need interrupts disabled: */ local_irq_enable(); preempt_check_resched(); #endif if (current_thread_info()->local_flags & _TLF_RESTORE_SIGMASK) oldset = ¤t->saved_sigmask; else if (!oldset) oldset = ¤t->blocked; signr = get_signal_to_deliver(&info, &ka, regs, NULL); /* Is there any syscall restart business here ? */ check_syscall_restart(regs, &ka, signr > 0); if (signr <= 0) { struct thread_info *ti = current_thread_info(); /* No signal to deliver -- put the saved sigmask back */ if (ti->local_flags & _TLF_RESTORE_SIGMASK) { ti->local_flags &= ~_TLF_RESTORE_SIGMASK; sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); } return 0; /* no signals delivered */ } /* * Reenable the DABR before delivering the signal to * user space. The DABR will have been cleared if it * triggered inside the kernel. */ if (current->thread.dabr) { set_dabr(current->thread.dabr); #if defined(CONFIG_BOOKE) mtspr(SPRN_DBCR0, current->thread.dbcr0); #endif } if (is32) { if (ka.sa.sa_flags & SA_SIGINFO) ret = handle_rt_signal32(signr, &ka, &info, oldset, regs); else ret = handle_signal32(signr, &ka, &info, oldset, regs); } else { ret = handle_rt_signal64(signr, &ka, &info, oldset, regs); } if (ret) { spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked, ¤t->blocked, &ka.sa.sa_mask); if (!(ka.sa.sa_flags & SA_NODEFER)) sigaddset(¤t->blocked, signr); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); /* * A signal was successfully delivered; the saved sigmask is in * its frame, and we can clear the TLF_RESTORE_SIGMASK flag. */ current_thread_info()->local_flags &= ~_TLF_RESTORE_SIGMASK; /* * Let tracing know that we've done the handler setup. */ tracehook_signal_handler(signr, &info, &ka, regs, test_thread_flag(TIF_SINGLESTEP)); } return ret; }
static int do_signal(struct pt_regs *regs) { sigset_t *oldset; siginfo_t info; int signr; struct k_sigaction ka; int ret; int is32 = is_32bit_task(); if (current_thread_info()->local_flags & _TLF_RESTORE_SIGMASK) oldset = ¤t->saved_sigmask; else oldset = ¤t->blocked; signr = get_signal_to_deliver(&info, &ka, regs, NULL); /* Is there any syscall restart business here ? */ check_syscall_restart(regs, &ka, signr > 0); if (signr <= 0) { struct thread_info *ti = current_thread_info(); /* No signal to deliver -- put the saved sigmask back */ if (ti->local_flags & _TLF_RESTORE_SIGMASK) { ti->local_flags &= ~_TLF_RESTORE_SIGMASK; sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); } regs->trap = 0; return 0; /* no signals delivered */ } #ifndef CONFIG_PPC_ADV_DEBUG_REGS /* * Reenable the DABR before delivering the signal to * user space. The DABR will have been cleared if it * triggered inside the kernel. */ if (current->thread.dabr) set_dabr(current->thread.dabr); #endif /* Re-enable the breakpoints for the signal stack */ thread_change_pc(current, regs); if (is32) { if (ka.sa.sa_flags & SA_SIGINFO) ret = handle_rt_signal32(signr, &ka, &info, oldset, regs); else ret = handle_signal32(signr, &ka, &info, oldset, regs); } else { ret = handle_rt_signal64(signr, &ka, &info, oldset, regs); } regs->trap = 0; if (ret) { block_sigmask(&ka, signr); /* * A signal was successfully delivered; the saved sigmask is in * its frame, and we can clear the TLF_RESTORE_SIGMASK flag. */ current_thread_info()->local_flags &= ~_TLF_RESTORE_SIGMASK; /* * Let tracing know that we've done the handler setup. */ tracehook_signal_handler(signr, &info, &ka, regs, test_thread_flag(TIF_SINGLESTEP)); } return ret; }