diff options
31 files changed, 92 insertions, 250 deletions
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c index cadf4571ca31..f1e7d2aa2586 100644 --- a/arch/alpha/kernel/signal.c +++ b/arch/alpha/kernel/signal.c @@ -468,12 +468,9 @@ 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 = ¤t->blocked; + sigset_t *oldset = sigmask_to_save(); int ret; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - if (ka->sa.sa_flags & SA_SIGINFO) ret = setup_rt_frame(sig, ka, info, oldset, regs, sw); else diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 3d1daac8ea04..2e66c93973c3 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -530,11 +530,11 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, */ static int handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, - struct pt_regs * regs) + siginfo_t *info, struct pt_regs *regs) { struct thread_info *thread = current_thread_info(); struct task_struct *tsk = current; + sigset_t *oldset = sigmask_to_save(); int usig = sig; int ret; @@ -617,8 +617,6 @@ static void do_signal(struct pt_regs *regs, int syscall) */ signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { - sigset_t *oldset; - /* * Depending on the signal settings we may need to revert the * decision to restart the system call. But skip this if a @@ -635,11 +633,7 @@ static void do_signal(struct pt_regs *regs, int syscall) clear_thread_flag(TIF_SYSCALL_RESTARTSYS); } - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - if (handle_signal(signr, &ka, &info, oldset, regs) == 0) { + if (handle_signal(signr, &ka, &info, regs) == 0) { /* * A signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, diff --git a/arch/avr32/kernel/signal.c b/arch/avr32/kernel/signal.c index 8b12c3046137..0e2c0527c9fe 100644 --- a/arch/avr32/kernel/signal.c +++ b/arch/avr32/kernel/signal.c @@ -224,14 +224,14 @@ static inline void setup_syscall_restart(struct pt_regs *regs) static inline void handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs, int syscall) + struct pt_regs *regs, int syscall) { int ret; /* * Set up the stack frame */ - ret = setup_rt_frame(sig, ka, info, oldset, regs); + ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs); /* * Check that the resulting registers are sane @@ -255,7 +255,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, * doesn't want to handle. Thus you cannot kill init even with a * SIGKILL even by mistake. */ -int do_signal(struct pt_regs *regs, sigset_t *oldset, int syscall) +static void do_signal(struct pt_regs *regs, int syscall) { siginfo_t info; int signr; @@ -267,12 +267,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset, int syscall) * without doing anything if so. */ if (!user_mode(regs)) - return 0; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else if (!oldset) - oldset = ¤t->blocked; + return; signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (syscall) { @@ -298,11 +293,10 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset, int syscall) if (signr == 0) { /* No signal to deliver -- put the saved sigmask back */ restore_saved_sigmask(); - return 0; + return; } - handle_signal(signr, &ka, &info, oldset, regs, syscall); - return 1; + handle_signal(signr, &ka, &info, regs, syscall); } asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti) @@ -313,7 +307,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti) syscall = 1; if (ti->flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) - do_signal(regs, ¤t->blocked, syscall); + do_signal(regs, syscall); if (ti->flags & _TIF_NOTIFY_RESUME) { clear_thread_flag(TIF_NOTIFY_RESUME); diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c index 9d692a1277b3..7f4205ddfa4d 100644 --- a/arch/blackfin/kernel/signal.c +++ b/arch/blackfin/kernel/signal.c @@ -249,7 +249,7 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) */ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { int ret; @@ -259,7 +259,7 @@ handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, handle_restart(regs, ka, 1); /* set up the stack frame */ - ret = setup_rt_frame(sig, ka, info, oldset, regs); + ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs); if (ret == 0) block_sigmask(ka, sig); @@ -281,22 +281,16 @@ asmlinkage void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; current->thread.esp0 = (unsigned long)regs; if (try_to_freeze()) goto no_signal; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + if (handle_signal(signr, &info, &ka, regs) == 0) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c index bfbcc958bbb4..38bb501eb117 100644 --- a/arch/c6x/kernel/signal.c +++ b/arch/c6x/kernel/signal.c @@ -250,8 +250,7 @@ do_restart: */ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs, - int syscall) + struct pt_regs *regs, int syscall) { int ret; @@ -278,7 +277,7 @@ static int handle_signal(int sig, } /* Set up the stack frame */ - ret = setup_rt_frame(sig, ka, info, oldset, regs); + ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs); if (ret == 0) block_sigmask(ka, sig); @@ -292,7 +291,6 @@ static void do_signal(struct pt_regs *regs, int syscall) { struct k_sigaction ka; siginfo_t info; - sigset_t *oldset; int signr; /* we want the common case to go fast, which is why we may in certain @@ -300,15 +298,9 @@ static void do_signal(struct pt_regs *regs, int syscall) if (!user_mode(regs)) return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { - if (handle_signal(signr, &info, &ka, oldset, - regs, syscall) == 0) { + if (handle_signal(signr, &info, &ka, regs, syscall) == 0) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/cris/arch-v10/kernel/signal.c b/arch/cris/arch-v10/kernel/signal.c index 06885e94e455..09a4cf4eb08a 100644 --- a/arch/cris/arch-v10/kernel/signal.c +++ b/arch/cris/arch-v10/kernel/signal.c @@ -417,8 +417,9 @@ give_sigsegv: static inline int handle_signal(int canrestart, unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Are we from a system call? */ @@ -478,7 +479,6 @@ void do_signal(int canrestart, struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; /* * We want the common case to go fast, which @@ -489,16 +489,11 @@ void do_signal(int canrestart, struct pt_regs *regs) if (!user_mode(regs)) return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ if (handle_signal(canrestart, signr, &info, &ka, - oldset, regs)) { + regs)) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c index fe12cdca0bac..d52276ddae4b 100644 --- a/arch/cris/arch-v32/kernel/signal.c +++ b/arch/cris/arch-v32/kernel/signal.c @@ -437,8 +437,9 @@ give_sigsegv: static inline int handle_signal(int canrestart, unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs * regs) + struct pt_regs * regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Check if this got called from a system call. */ @@ -511,7 +512,6 @@ do_signal(int canrestart, struct pt_regs *regs) int signr; siginfo_t info; struct k_sigaction ka; - sigset_t *oldset; /* * The common case should go fast, which is why this point is @@ -521,17 +521,12 @@ do_signal(int canrestart, struct pt_regs *regs) if (!user_mode(regs)) return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ if (handle_signal(canrestart, signr, &info, &ka, - oldset, regs)) { + regs)) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c index 16351cc8c36c..22efe8d25038 100644 --- a/arch/frv/kernel/signal.c +++ b/arch/frv/kernel/signal.c @@ -427,8 +427,9 @@ give_sigsegv: * OK, we're invoking a handler */ static int handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, sigset_t *oldset) + struct k_sigaction *ka) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Are we from a system call? */ @@ -492,14 +493,9 @@ static void do_signal(void) if (try_to_freeze()) goto no_signal; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, __frame, NULL); if (signr > 0) { - if (handle_signal(signr, &info, &ka, oldset) == 0) { + if (handle_signal(signr, &info, &ka) == 0) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c index 63623dabab32..d4d2f72672ad 100644 --- a/arch/h8300/kernel/signal.c +++ b/arch/h8300/kernel/signal.c @@ -412,8 +412,9 @@ give_sigsegv: */ static void handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs * regs) + struct pt_regs * regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* are we from a system call? */ if (regs->orig_er0 >= 0) { @@ -457,7 +458,6 @@ statis void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; /* * We want the common case to go fast, which @@ -473,15 +473,10 @@ statis void do_signal(struct pt_regs *regs) current->thread.esp0 = (unsigned long) regs; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ - handle_signal(signr, &info, &ka, oldset, regs); + handle_signal(signr, &info, &ka, regs); return; } no_signal: diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c index acd6272913b3..f73fcee09bac 100644 --- a/arch/hexagon/kernel/signal.c +++ b/arch/hexagon/kernel/signal.c @@ -150,7 +150,7 @@ sigsegv: * Setup invocation of signal handler */ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { int rc; @@ -186,7 +186,7 @@ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, * Set up the stack frame; not doing the SA_SIGINFO thing. We * only set up the rt_frame flavor. */ - rc = setup_rt_frame(sig, ka, info, oldset, regs); + rc = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs); /* If there was an error on setup, no signal was delivered. */ if (rc) @@ -215,14 +215,7 @@ static void do_signal(struct pt_regs *regs) signo = get_signal_to_deliver(&info, &sigact, regs, NULL); if (signo > 0) { - sigset_t *oldset; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - - if (handle_signal(signo, &info, &sigact, oldset, regs) == 0) { + if (handle_signal(signo, &info, &sigact, regs) == 0) { /* * Successful delivery case. The saved sigmask is * stored in the signal frame, and will be restored diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 39d8f3afff49..9fee6d6a3f21 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -415,10 +415,10 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, } static long -handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *oldset, +handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, struct sigscratch *scr) { - if (!setup_frame(sig, ka, info, oldset, scr)) + if (!setup_frame(sig, ka, info, sigmask_to_save(), scr)) return 0; block_sigmask(ka, sig); @@ -440,7 +440,6 @@ void ia64_do_signal (struct sigscratch *scr, long in_syscall) { struct k_sigaction ka; - sigset_t *oldset; siginfo_t info; long restart = in_syscall; long errno = scr->pt.r8; @@ -453,11 +452,6 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) if (!user_mode(&scr->pt)) return; - if (current_thread_info()->status & TS_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - /* * This only loops in the rare cases of handle_signal() failing, in which case we * need to push through a forced SIGSEGV. @@ -507,7 +501,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) * Whee! Actually deliver the signal. If the delivery failed, we need to * continue to iterate in this loop so we can deliver the SIGSEGV... */ - if (handle_signal(signr, &ka, &info, oldset, scr)) { + if (handle_signal(signr, &ka, &info, scr)) { /* * A signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c index 2ad7c4587669..e0d6d1079f33 100644 --- a/arch/m32r/kernel/signal.c +++ b/arch/m32r/kernel/signal.c @@ -269,7 +269,7 @@ static int prev_insn(struct pt_regs *regs) static int handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { /* Are we from a system call? */ if (regs->syscall_nr >= 0) { @@ -294,7 +294,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, } /* Set up the stack frame */ - if (setup_rt_frame(sig, ka, info, oldset, regs)) + if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs)) return -EFAULT; block_sigmask(ka, sig); @@ -311,7 +311,6 @@ static void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; /* * We want the common case to go fast, which @@ -325,11 +324,6 @@ static void do_signal(struct pt_regs *regs) if (try_to_freeze()) goto no_signal; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Re-enable any watchpoints before delivering the @@ -339,7 +333,7 @@ static void do_signal(struct pt_regs *regs) */ /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &ka, &info, oldset, regs) == 0) + if (handle_signal(signr, &ka, &info, regs) == 0) clear_thread_flag(TIF_RESTORE_SIGMASK); return; diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c index 685cbe84f33f..c83eb5a8ed8b 100644 --- a/arch/m68k/kernel/signal.c +++ b/arch/m68k/kernel/signal.c @@ -1123,8 +1123,9 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) */ static void handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int err; /* are we from a system call? */ if (regs->orig_d0 >= 0) @@ -1160,19 +1161,13 @@ static void do_signal(struct pt_regs *regs) siginfo_t info; struct k_sigaction ka; int signr; - sigset_t *oldset; current->thread.esp0 = (unsigned long) regs; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, oldset, regs); + handle_signal(signr, &ka, &info, regs); return; } diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c index 8e644dfaba4f..fd2de5718a4e 100644 --- a/arch/microblaze/kernel/signal.c +++ b/arch/microblaze/kernel/signal.c @@ -312,8 +312,9 @@ do_restart: static int handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, struct pt_regs *regs) + siginfo_t *info, struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Set up the stack frame */ @@ -344,18 +345,12 @@ static void do_signal(struct pt_regs *regs, int in_syscall) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; #ifdef DEBUG_SIG printk(KERN_INFO "do signal: %p %d\n", regs, in_syscall); printk(KERN_INFO "do signal2: %lx %lx %ld [%lx]\n", regs->pc, regs->r1, regs->r12, current_thread_info()->flags); #endif - if (current_thread_info()->status & TS_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index aad2d2da5eec..18355060f241 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -515,8 +515,9 @@ struct mips_abi mips_abi = { }; static int handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs) + struct k_sigaction *ka, struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int ret; struct mips_abi *abi = current->thread.abi; void *vdso = current->mm->context.vdso; @@ -560,7 +561,6 @@ static int handle_signal(unsigned long sig, siginfo_t *info, static void do_signal(struct pt_regs *regs) { struct k_sigaction ka; - sigset_t *oldset; siginfo_t info; int signr; @@ -572,15 +572,10 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + if (handle_signal(signr, &info, &ka, regs) == 0) { /* * A signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c index b7994c38eacc..26a1d98c62a1 100644 --- a/arch/mn10300/kernel/signal.c +++ b/arch/mn10300/kernel/signal.c @@ -430,8 +430,9 @@ static inline void stepback(struct pt_regs *regs) */ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Are we from a system call? */ @@ -475,7 +476,6 @@ static void do_signal(struct pt_regs *regs) { struct k_sigaction ka; siginfo_t info; - sigset_t *oldset; int signr; /* we want the common case to go fast, which is why we may in certain @@ -483,14 +483,9 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + if (handle_signal(signr, &info, &ka, regs) == 0) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c index 266c6fd2eb5c..721c584ff44a 100644 --- a/arch/openrisc/kernel/signal.c +++ b/arch/openrisc/kernel/signal.c @@ -254,11 +254,11 @@ give_sigsegv: static inline int handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { int ret; - ret = setup_rt_frame(sig, ka, info, oldset, regs); + ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs); if (ret) return ret; @@ -341,15 +341,9 @@ void do_signal(struct pt_regs *regs) * back */ restore_saved_sigmask(); } else { /* signr > 0 */ - sigset_t *oldset; - - if (current_thread_info()->flags & _TIF_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; /* Whee! Actually deliver the signal. */ - if (!handle_signal(signr, &info, &ka, oldset, regs)) { + if (!handle_signal(signr, &info, &ka, regs)) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index 277cacadf653..441b25992846 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -443,8 +443,9 @@ give_sigsegv: static long handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs, int in_syscall) + struct pt_regs *regs, int in_syscall) { + sigset_t *oldset = sigmask_to_save(); DBG(1,"handle_signal: sig=%ld, ka=%p, info=%p, oldset=%p, regs=%p\n", sig, ka, info, oldset, regs); @@ -568,28 +569,17 @@ do_signal(struct pt_regs *regs, long in_syscall) siginfo_t info; struct k_sigaction ka; int signr; - sigset_t *oldset; - DBG(1,"\ndo_signal: oldset=0x%p, regs=0x%p, sr7 %#lx, in_syscall=%d\n", - oldset, regs, regs->sr[7], in_syscall); + DBG(1,"\ndo_signal: regs=0x%p, sr7 %#lx, in_syscall=%d\n", + regs, regs->sr[7], in_syscall); /* Everyone else checks to see if they are in kernel mode at this point and exits if that's the case. I'm not sure why we would be called in that case, but for some reason we are. */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - - DBG(1,"do_signal: oldset %08lx / %08lx\n", - oldset->sig[0], oldset->sig[1]); - - /* May need to force signal if handle_signal failed to deliver */ while (1) { - signr = get_signal_to_deliver(&info, &ka, regs, NULL); DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]); @@ -603,8 +593,7 @@ do_signal(struct pt_regs *regs, long in_syscall) /* Whee! Actually deliver the signal. If the delivery failed, we need to continue to iterate in this loop so we can deliver the SIGSEGV... */ - if (handle_signal(signr, &info, &ka, oldset, - regs, in_syscall)) { + if (handle_signal(signr, &info, &ka, regs, in_syscall)) { DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n", regs->gr[28]); if (test_thread_flag(TIF_RESTORE_SIGMASK)) diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index 0f4cc67f4268..8e9ddab7ade6 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -114,18 +114,13 @@ static void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka, static int do_signal(struct pt_regs *regs) { - sigset_t *oldset; + sigset_t *oldset = sigmask_to_save(); 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 ? */ diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 37799089c38e..c880c48a09f3 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -398,12 +398,7 @@ void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; + sigset_t *oldset = sigmask_to_save(); /* * Get signal to deliver. When running under ptrace, at this point diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c index 9e751559375b..b24dfaf2462f 100644 --- a/arch/score/kernel/signal.c +++ b/arch/score/kernel/signal.c @@ -242,7 +242,7 @@ give_sigsegv: } static int handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs) + struct k_sigaction *ka, struct pt_regs *regs) { int ret; @@ -269,7 +269,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info, /* * Set up the stack frame */ - ret = setup_rt_frame(ka, regs, sig, oldset, info); + ret = setup_rt_frame(ka, regs, sig, sigmask_to_save(), info); if (ret == 0) block_sigmask(ka, sig); @@ -280,7 +280,6 @@ static int handle_signal(unsigned long sig, siginfo_t *info, static void do_signal(struct pt_regs *regs) { struct k_sigaction ka; - sigset_t *oldset; siginfo_t info; int signr; @@ -292,15 +291,10 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Actually deliver the signal. */ - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + if (handle_signal(signr, &info, &ka, regs) == 0) { /* * A signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index 92f4173ad29a..bfb3d599f032 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -524,8 +524,9 @@ handle_syscall_restart(unsigned long save_r0, struct pt_regs *regs, */ static int handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs, unsigned int save_r0) + struct pt_regs *regs, unsigned int save_r0) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Set up the stack frame */ @@ -554,7 +555,6 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; /* * We want the common case to go fast, which @@ -565,17 +565,12 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0) if (!user_mode(regs)) return; - if (current_thread_info()->status & TS_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { handle_syscall_restart(save_r0, regs, &ka.sa); /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &ka, &info, oldset, + if (handle_signal(signr, &ka, &info, regs, save_r0) == 0) { /* * A signal was successfully delivered; the saved diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c index 6e191ef0aa62..cc22d2b2e3f2 100644 --- a/arch/sh/kernel/signal_64.c +++ b/arch/sh/kernel/signal_64.c @@ -45,7 +45,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs * regs); + struct pt_regs * regs); static inline void handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa) @@ -88,7 +88,6 @@ static void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; /* * We want the common case to go fast, which @@ -99,17 +98,12 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - if (current_thread_info()->status & TS_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, 0); if (signr > 0) { handle_syscall_restart(regs, &ka.sa); /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + if (handle_signal(signr, &info, &ka, regs) == 0) { /* * If a signal was successfully delivered, the * saved sigmask is in its frame, and we can @@ -656,8 +650,9 @@ give_sigsegv: */ static int handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs * regs) + struct pt_regs * regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Set up the stack frame */ diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c index 9dd97d2e171e..5d74410c787b 100644 --- a/arch/sparc/kernel/signal_32.c +++ b/arch/sparc/kernel/signal_32.c @@ -451,8 +451,9 @@ sigsegv: static inline int handle_signal(unsigned long signr, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, struct pt_regs *regs) + siginfo_t *info, struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int err; if (ka->sa.sa_flags & SA_SIGINFO) @@ -498,7 +499,6 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0) { struct k_sigaction ka; int restart_syscall; - sigset_t *oldset; siginfo_t info; int signr; @@ -523,11 +523,6 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0) if (pt_regs_is_syscall(regs) && (regs->psr & PSR_C)) regs->u_regs[UREG_G6] = orig_i0; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); /* If the debugger messes with the program counter, it clears @@ -544,7 +539,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0) if (signr > 0) { if (restart_syscall) syscall_restart(orig_i0, regs, &ka.sa); - if (handle_signal(signr, &ka, &info, oldset, regs) == 0) { + if (handle_signal(signr, &ka, &info, regs) == 0) { /* a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, * and will be restored by sigreturn, so we can simply diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c index 55b820ee0ac9..088a733f83f9 100644 --- a/arch/sparc/kernel/signal_64.c +++ b/arch/sparc/kernel/signal_64.c @@ -512,7 +512,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0) { struct k_sigaction ka; int restart_syscall; - sigset_t *oldset; + sigset_t *oldset = sigmask_to_save(); siginfo_t info; int signr; @@ -538,11 +538,6 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0) (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) regs->u_regs[UREG_G6] = orig_i0; - if (current_thread_info()->status & TS_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - #ifdef CONFIG_COMPAT if (test_thread_flag(TIF_32BIT)) { extern void do_signal32(sigset_t *, struct pt_regs *); diff --git a/arch/tile/kernel/signal.c b/arch/tile/kernel/signal.c index 62b3493ea77d..588c28b2db58 100644 --- a/arch/tile/kernel/signal.c +++ b/arch/tile/kernel/signal.c @@ -243,9 +243,10 @@ give_sigsegv: */ static int handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, sigset_t *oldset, + struct k_sigaction *ka, struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Are we from a system call? */ @@ -299,7 +300,6 @@ void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; /* * i386 will check if we're coming from kernel mode and bail out @@ -308,15 +308,10 @@ void do_signal(struct pt_regs *regs) * helpful, we can reinstate the check on "!user_mode(regs)". */ - if (current_thread_info()->status & TS_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + if (handle_signal(signr, &info, &ka, regs) == 0) { /* * A signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c index 6acf13c1740b..909e9b8d6612 100644 --- a/arch/um/kernel/signal.c +++ b/arch/um/kernel/signal.c @@ -23,9 +23,9 @@ EXPORT_SYMBOL(unblock_signals); * OK, we're invoking a handler */ static int handle_signal(struct pt_regs *regs, unsigned long signr, - struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset) + struct k_sigaction *ka, siginfo_t *info) { + sigset_t *oldset = sigmask_to_save(); unsigned long sp; int err; @@ -77,14 +77,9 @@ static int kern_do_signal(struct pt_regs *regs) int sig, handled_sig = 0; while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) { - sigset_t *oldset; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; handled_sig = 1; /* Whee! Actually deliver the signal. */ - if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) { + if (!handle_signal(regs, sig, &ka_copy, &info)) { /* * a signal was successfully delivered; the saved * sigmask will have been stored in the signal frame, diff --git a/arch/unicore32/kernel/signal.c b/arch/unicore32/kernel/signal.c index 65a5ed3b6f2a..bf23194dc74d 100644 --- a/arch/unicore32/kernel/signal.c +++ b/arch/unicore32/kernel/signal.c @@ -313,12 +313,11 @@ static inline void setup_syscall_restart(struct pt_regs *regs) * OK, we're invoking a handler */ static int handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, - struct pt_regs *regs, int syscall) + siginfo_t *info, struct pt_regs *regs, int syscall) { struct thread_info *thread = current_thread_info(); struct task_struct *tsk = current; - sigset_t blocked; + sigset_t *oldset = sigmask_to_save(); int usig = sig; int ret; @@ -404,13 +403,7 @@ static void do_signal(struct pt_regs *regs, int syscall) signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { - sigset_t *oldset; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - if (handle_signal(signr, &ka, &info, oldset, regs, syscall) + if (handle_signal(signr, &ka, &info, regs, syscall) == 0) { /* * A signal was successfully delivered; the saved diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index 25a4a81a51aa..56f3062c5111 100644 --- a/arch/x86/kernel/signal.c +++ b/arch/x86/kernel/signal.c @@ -647,12 +647,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, struct pt_regs *regs) { int usig = signr_convert(sig); - sigset_t *set = ¤t->blocked; + sigset_t *set = sigmask_to_save(); int ret; - if (current_thread_info()->status & TS_RESTORE_SIGMASK) - set = ¤t->saved_sigmask; - /* Set up the stack frame */ if (is_ia32) { if (ka->sa.sa_flags & SA_SIGINFO) diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index 8c4e751e3b83..e4b06e2d4eb9 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -452,16 +452,10 @@ static void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t oldset; if (try_to_freeze()) goto no_signal; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - task_pt_regs(current)->icountlevel = 0; signr = get_signal_to_deliver(&info, &ka, regs, NULL); @@ -501,7 +495,7 @@ static void do_signal(struct pt_regs *regs) /* Whee! Actually deliver the signal. */ /* Set up the stack frame */ - ret = setup_frame(signr, &ka, &info, oldset, regs); + ret = setup_frame(signr, &ka, &info, sigmask_to_save(), regs); if (ret) return; diff --git a/include/linux/sched.h b/include/linux/sched.h index f1b46b88f6f5..ded3fb63fb06 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2213,6 +2213,14 @@ static inline void restore_saved_sigmask(void) set_current_blocked(¤t->saved_sigmask); } +static inline sigset_t *sigmask_to_save(void) +{ + sigset_t *res = ¤t->blocked; + if (unlikely(test_restore_sigmask())) + res = ¤t->saved_sigmask; + return res; +} + static inline int kill_cad_pid(int sig, int priv) { return kill_pid(cad_pid, sig, priv); |