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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-09 09:58:12 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-09 09:58:12 -0700 |
commit | 63b12bdb0d21aca527996fb2c547387bfd3e14b8 (patch) | |
tree | 6ab83b2a1c289f30fea18b88f04138ee69c37c6f /arch/ia64 | |
parent | ad1f5caf34390bb20fdbb4eaf71b0494e89936f0 (diff) | |
parent | 059ade650ae57cfd371af690fdba887af04aded8 (diff) | |
download | linux-stable-63b12bdb0d21aca527996fb2c547387bfd3e14b8.tar.gz linux-stable-63b12bdb0d21aca527996fb2c547387bfd3e14b8.tar.bz2 linux-stable-63b12bdb0d21aca527996fb2c547387bfd3e14b8.zip |
Merge branch 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc
Pull arch signal handling cleanup from Richard Weinberger:
"This patch series moves all remaining archs to the get_signal(),
signal_setup_done() and sigsp() functions.
Currently these archs use open coded variants of the said functions.
Further, unused parameters get removed from get_signal_to_deliver(),
tracehook_signal_handler() and signal_delivered().
At the end of the day we save around 500 lines of code."
* 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits)
powerpc: Use sigsp()
openrisc: Use sigsp()
mn10300: Use sigsp()
mips: Use sigsp()
microblaze: Use sigsp()
metag: Use sigsp()
m68k: Use sigsp()
m32r: Use sigsp()
hexagon: Use sigsp()
frv: Use sigsp()
cris: Use sigsp()
c6x: Use sigsp()
blackfin: Use sigsp()
avr32: Use sigsp()
arm64: Use sigsp()
arc: Use sigsp()
sas_ss_flags: Remove nested ternary if
Rip out get_signal_to_deliver()
Clean up signal_delivered()
tracehook_signal_handler: Remove sig, info, ka and regs
...
Diffstat (limited to 'arch/ia64')
-rw-r--r-- | arch/ia64/kernel/signal.c | 46 |
1 files changed, 21 insertions, 25 deletions
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 33cab9a8adff..6d92170be457 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -309,12 +309,11 @@ force_sigsegv_info (int sig, void __user *addr) si.si_uid = from_kuid_munged(current_user_ns(), current_uid()); si.si_addr = addr; force_sig_info(SIGSEGV, &si, current); - return 0; + return 1; } static long -setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, - struct sigscratch *scr) +setup_frame(struct ksignal *ksig, sigset_t *set, struct sigscratch *scr) { extern char __kernel_sigtramp[]; unsigned long tramp_addr, new_rbs = 0, new_sp; @@ -323,7 +322,7 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, new_sp = scr->pt.r12; tramp_addr = (unsigned long) __kernel_sigtramp; - if (ka->sa.sa_flags & SA_ONSTACK) { + if (ksig->ka.sa.sa_flags & SA_ONSTACK) { int onstack = sas_ss_flags(new_sp); if (onstack == 0) { @@ -347,29 +346,29 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, */ check_sp = (new_sp - sizeof(*frame)) & -STACK_ALIGN; if (!likely(on_sig_stack(check_sp))) - return force_sigsegv_info(sig, (void __user *) + return force_sigsegv_info(ksig->sig, (void __user *) check_sp); } } frame = (void __user *) ((new_sp - sizeof(*frame)) & -STACK_ALIGN); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - return force_sigsegv_info(sig, frame); + return force_sigsegv_info(ksig->sig, frame); - err = __put_user(sig, &frame->arg0); + err = __put_user(ksig->sig, &frame->arg0); err |= __put_user(&frame->info, &frame->arg1); err |= __put_user(&frame->sc, &frame->arg2); err |= __put_user(new_rbs, &frame->sc.sc_rbs_base); err |= __put_user(0, &frame->sc.sc_loadrs); /* initialize to zero */ - err |= __put_user(ka->sa.sa_handler, &frame->handler); + err |= __put_user(ksig->ka.sa.sa_handler, &frame->handler); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= __save_altstack(&frame->sc.sc_stack, scr->pt.r12); err |= setup_sigcontext(&frame->sc, set, scr); if (unlikely(err)) - return force_sigsegv_info(sig, frame); + return force_sigsegv_info(ksig->sig, frame); scr->pt.r12 = (unsigned long) frame - 16; /* new stack pointer */ scr->pt.ar_fpsr = FPSR_DEFAULT; /* reset fpsr for signal handler */ @@ -394,22 +393,20 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, #if DEBUG_SIG printk("SIG deliver (%s:%d): sig=%d sp=%lx ip=%lx handler=%p\n", - current->comm, current->pid, sig, scr->pt.r12, frame->sc.sc_ip, frame->handler); + current->comm, current->pid, ksig->sig, scr->pt.r12, frame->sc.sc_ip, frame->handler); #endif - return 1; + return 0; } static long -handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct sigscratch *scr) +handle_signal (struct ksignal *ksig, struct sigscratch *scr) { - if (!setup_frame(sig, ka, info, sigmask_to_save(), scr)) - return 0; + int ret = setup_frame(ksig, sigmask_to_save(), scr); - signal_delivered(sig, info, ka, &scr->pt, - test_thread_flag(TIF_SINGLESTEP)); + if (!ret) + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); - return 1; + return ret; } /* @@ -419,17 +416,16 @@ handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, void ia64_do_signal (struct sigscratch *scr, long in_syscall) { - struct k_sigaction ka; - siginfo_t info; long restart = in_syscall; long errno = scr->pt.r8; + struct ksignal ksig; /* * This only loops in the rare cases of handle_signal() failing, in which case we * need to push through a forced SIGSEGV. */ while (1) { - int signr = get_signal_to_deliver(&info, &ka, &scr->pt, NULL); + get_signal(&ksig); /* * get_signal_to_deliver() may have run a debugger (via notify_parent()) @@ -446,7 +442,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) */ restart = 0; - if (signr <= 0) + if (ksig.sig <= 0) break; if (unlikely(restart)) { @@ -458,7 +454,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) break; case ERESTARTSYS: - if ((ka.sa.sa_flags & SA_RESTART) == 0) { + if ((ksig.ka.sa.sa_flags & SA_RESTART) == 0) { scr->pt.r8 = EINTR; /* note: scr->pt.r10 is already -1 */ break; @@ -473,7 +469,7 @@ 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, scr)) + if (handle_signal(&ksig, scr)) return; } |