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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-09 16:58:12 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-09 16:58:12 (GMT) |
commit | 63b12bdb0d21aca527996fb2c547387bfd3e14b8 (patch) | |
tree | 6ab83b2a1c289f30fea18b88f04138ee69c37c6f /arch/parisc/kernel | |
parent | ad1f5caf34390bb20fdbb4eaf71b0494e89936f0 (diff) | |
parent | 059ade650ae57cfd371af690fdba887af04aded8 (diff) | |
download | linux-63b12bdb0d21aca527996fb2c547387bfd3e14b8.tar.xz |
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/parisc/kernel')
-rw-r--r-- | arch/parisc/kernel/signal.c | 58 |
1 files changed, 24 insertions, 34 deletions
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index 1cba8f2..012d4fa 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -227,8 +227,8 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, int in_sysc } static long -setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs, int in_syscall) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs, + int in_syscall) { struct rt_sigframe __user *frame; unsigned long rp, usp; @@ -241,10 +241,10 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, usp = (regs->gr[30] & ~(0x01UL)); /*FIXME: frame_size parameter is unused, remove it. */ - frame = get_sigframe(ka, usp, sizeof(*frame)); + frame = get_sigframe(&ksig->ka, usp, sizeof(*frame)); DBG(1,"SETUP_RT_FRAME: START\n"); - DBG(1,"setup_rt_frame: frame %p info %p\n", frame, info); + DBG(1,"setup_rt_frame: frame %p info %p\n", frame, ksig->info); #ifdef CONFIG_64BIT @@ -253,7 +253,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (is_compat_task()) { DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &compat_frame->info); - err |= copy_siginfo_to_user32(&compat_frame->info, info); + err |= copy_siginfo_to_user32(&compat_frame->info, &ksig->info); err |= __compat_save_altstack( &compat_frame->uc.uc_stack, regs->gr[30]); DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &compat_frame->uc); DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &compat_frame->uc.uc_mcontext); @@ -265,7 +265,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif { DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &frame->info); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= __save_altstack(&frame->uc.uc_stack, regs->gr[30]); DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &frame->uc); DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &frame->uc.uc_mcontext); @@ -275,7 +275,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. The first words of tramp are used to @@ -312,9 +312,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, rp = (unsigned long) &frame->tramp[SIGRESTARTBLOCK_TRAMP]; if (err) - goto give_sigsegv; + return -EFAULT; - haddr = A(ka->sa.sa_handler); + haddr = A(ksig->ka.sa.sa_handler); /* The sa_handler may be a pointer to a function descriptor */ #ifdef CONFIG_64BIT if (is_compat_task()) { @@ -326,7 +326,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc)); if (err) - goto give_sigsegv; + return -EFAULT; haddr = fdesc.addr; regs->gr[19] = fdesc.gp; @@ -339,7 +339,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc)); if (err) - goto give_sigsegv; + return -EFAULT; haddr = fdesc.addr; regs->gr[19] = fdesc.gp; @@ -386,7 +386,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } regs->gr[2] = rp; /* userland return pointer */ - regs->gr[26] = sig; /* signal number */ + regs->gr[26] = ksig->sig; /* signal number */ #ifdef CONFIG_64BIT if (is_compat_task()) { @@ -410,11 +410,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, current->comm, current->pid, frame, regs->gr[30], regs->iaoq[0], regs->iaoq[1], rp); - return 1; - -give_sigsegv: - DBG(1,"setup_rt_frame: sending SIGSEGV\n"); - force_sigsegv(sig, current); return 0; } @@ -423,20 +418,19 @@ give_sigsegv: */ static void -handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs, int in_syscall) +handle_signal(struct ksignal *ksig, struct pt_regs *regs, int in_syscall) { + int ret; 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); + ksig->sig, ksig->ka, ksig->info, oldset, regs); /* Set up the stack frame */ - if (!setup_rt_frame(sig, ka, info, oldset, regs, in_syscall)) - return; + ret = setup_rt_frame(ksig, oldset, regs, in_syscall); - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP) || - test_thread_flag(TIF_BLOCKSTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP) || + test_thread_flag(TIF_BLOCKSTEP)); DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n", regs->gr[28]); @@ -544,22 +538,18 @@ insert_restart_trampoline(struct pt_regs *regs) asmlinkage void do_signal(struct pt_regs *regs, long in_syscall) { - siginfo_t info; - struct k_sigaction ka; - int signr; + struct ksignal ksig; DBG(1,"\ndo_signal: regs=0x%p, sr7 %#lx, in_syscall=%d\n", regs, regs->sr[7], in_syscall); - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]); - - if (signr > 0) { + if (get_signal(&ksig)) { + DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]); /* Restart a system call if necessary. */ if (in_syscall) - syscall_restart(regs, &ka); + syscall_restart(regs, &ksig.ka); - handle_signal(signr, &info, &ka, regs, in_syscall); + handle_signal(&ksig, regs, in_syscall); return; } |