From: Richard Weinberger <rich...@nod.at> Use the more generic functions get_signal() signal_setup_done() for signal delivery.
Signed-off-by: Richard Weinberger <rich...@nod.at> --- arch/um/include/shared/frame_kern.h | 12 ++++------ arch/um/kernel/signal.c | 27 +++++++++------------- arch/x86/um/signal.c | 45 +++++++++++++++++-------------------- 3 files changed, 36 insertions(+), 48 deletions(-) diff --git a/arch/um/include/shared/frame_kern.h b/arch/um/include/shared/frame_kern.h index f2ca570..a5cde5c 100644 --- a/arch/um/include/shared/frame_kern.h +++ b/arch/um/include/shared/frame_kern.h @@ -6,14 +6,10 @@ #ifndef __FRAME_KERN_H_ #define __FRAME_KERN_H_ -extern int setup_signal_stack_sc(unsigned long stack_top, int sig, - struct k_sigaction *ka, - struct pt_regs *regs, - sigset_t *mask); -extern int setup_signal_stack_si(unsigned long stack_top, int sig, - struct k_sigaction *ka, - struct pt_regs *regs, struct siginfo *info, - sigset_t *mask); +extern int setup_signal_stack_sc(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask); +extern int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask); #endif diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c index f57e02e..4f60e4a 100644 --- a/arch/um/kernel/signal.c +++ b/arch/um/kernel/signal.c @@ -18,8 +18,7 @@ EXPORT_SYMBOL(unblock_signals); /* * OK, we're invoking a handler */ -static void handle_signal(struct pt_regs *regs, unsigned long signr, - struct k_sigaction *ka, struct siginfo *info) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int singlestep = 0; @@ -39,7 +38,7 @@ static void handle_signal(struct pt_regs *regs, unsigned long signr, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { PT_REGS_SYSCALL_RET(regs) = -EINTR; break; } @@ -52,32 +51,28 @@ static void handle_signal(struct pt_regs *regs, unsigned long signr, } sp = PT_REGS_SP(regs); - if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0)) + if ((ksig->ka.sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0)) sp = current->sas_ss_sp + current->sas_ss_size; #ifdef CONFIG_ARCH_HAS_SC_SIGNALS - if (!(ka->sa.sa_flags & SA_SIGINFO)) - err = setup_signal_stack_sc(sp, signr, ka, regs, oldset); + if (!(ksig->ka.sa.sa_flags & SA_SIGINFO)) + err = setup_signal_stack_sc(sp, ksig, regs, oldset); else #endif - err = setup_signal_stack_si(sp, signr, ka, regs, info, oldset); + err = setup_signal_stack_si(sp, ksig, regs, oldset); - if (err) - force_sigsegv(signr, current); - else - signal_delivered(signr, info, ka, regs, singlestep); + signal_setup_done(err, ksig, singlestep); } static int kern_do_signal(struct pt_regs *regs) { - struct k_sigaction ka_copy; - struct siginfo info; - int sig, handled_sig = 0; + struct ksignal ksig; + int handled_sig = 0; - while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) { + while (get_signal(&ksig)) { handled_sig = 1; /* Whee! Actually deliver the signal. */ - handle_signal(regs, sig, &ka_copy, &info); + handle_signal(&ksig, regs); } /* Did we come from a system call? */ diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c index 5e04a1c..79d8245 100644 --- a/arch/x86/um/signal.c +++ b/arch/x86/um/signal.c @@ -370,13 +370,12 @@ struct rt_sigframe char retcode[8]; }; -int setup_signal_stack_sc(unsigned long stack_top, int sig, - struct k_sigaction *ka, struct pt_regs *regs, - sigset_t *mask) +int setup_signal_stack_sc(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask) { struct sigframe __user *frame; void __user *restorer; - int err = 0; + int err = 0, sig = ksig->sig; /* This is the same calculation as i386 - ((sp + 4) & 15) == 0 */ stack_top = ((stack_top + 4) & -16UL) - 4; @@ -385,8 +384,8 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig, return 1; restorer = frame->retcode; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) + restorer = ksig->ka.sa.sa_restorer; err |= __put_user(restorer, &frame->pretcode); err |= __put_user(sig, &frame->sig); @@ -410,20 +409,19 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig, return err; PT_REGS_SP(regs) = (unsigned long) frame; - PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler; + PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler; PT_REGS_AX(regs) = (unsigned long) sig; PT_REGS_DX(regs) = (unsigned long) 0; PT_REGS_CX(regs) = (unsigned long) 0; return 0; } -int setup_signal_stack_si(unsigned long stack_top, int sig, - struct k_sigaction *ka, struct pt_regs *regs, - siginfo_t *info, sigset_t *mask) +int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask) { struct rt_sigframe __user *frame; void __user *restorer; - int err = 0; + int err = 0, sig = ksig->sig; stack_top &= -8UL; frame = (struct rt_sigframe __user *) stack_top - 1; @@ -431,14 +429,14 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, return 1; restorer = frame->retcode; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) + restorer = ksig->ka.sa.sa_restorer; err |= __put_user(restorer, &frame->pretcode); err |= __put_user(sig, &frame->sig); err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= copy_ucontext_to_user(&frame->uc, &frame->fpstate, mask, PT_REGS_SP(regs)); @@ -457,7 +455,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, return err; PT_REGS_SP(regs) = (unsigned long) frame; - PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler; + PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler; PT_REGS_AX(regs) = (unsigned long) sig; PT_REGS_DX(regs) = (unsigned long) &frame->info; PT_REGS_CX(regs) = (unsigned long) &frame->uc; @@ -502,12 +500,11 @@ struct rt_sigframe struct _fpstate fpstate; }; -int setup_signal_stack_si(unsigned long stack_top, int sig, - struct k_sigaction *ka, struct pt_regs * regs, - siginfo_t *info, sigset_t *set) +int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set) { struct rt_sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; frame = (struct rt_sigframe __user *) round_down(stack_top - sizeof(struct rt_sigframe), 16); @@ -517,8 +514,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) goto out; - if (ka->sa.sa_flags & SA_SIGINFO) { - err |= copy_siginfo_to_user(&frame->info, info); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) { + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) goto out; } @@ -543,8 +540,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, * already in userspace. */ /* x86-64 should always use SA_RESTORER. */ - if (ka->sa.sa_flags & SA_RESTORER) - err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); + if (ksig->ka.sa.sa_flags & SA_RESTORER) + err |= __put_user(ksig->ka.sa.sa_restorer, &frame->pretcode); else /* could use a vstub here */ return err; @@ -570,7 +567,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, */ PT_REGS_SI(regs) = (unsigned long) &frame->info; PT_REGS_DX(regs) = (unsigned long) &frame->uc; - PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler; + PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler; out: return err; } -- 1.8.4.5 ------------------------------------------------------------------------------ Want fast and easy access to all the code in your enterprise? 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