From 7a879a94d90dc5c494875b54499ae321400358d8 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 23 Dec 2012 03:46:05 -0500 Subject: sh: switch to generic sigaltstack Signed-off-by: Al Viro --- arch/sh/kernel/signal_32.c | 20 ++------------------ 1 file changed, 2 insertions(+), 18 deletions(-) (limited to 'arch/sh/kernel/signal_32.c') diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index 2f1f65356c0c..e540d07dd5c5 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -89,17 +89,6 @@ sys_sigaction(int sig, const struct old_sigaction __user *act, return ret; } -asmlinkage int -sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, - unsigned long r6, unsigned long r7, - struct pt_regs __regs) -{ - struct pt_regs *regs = RELOC_HIDE(&__regs, 0); - - return do_sigaltstack(uss, uoss, regs->regs[15]); -} - - /* * Do a signal return; undo the signal stack. */ @@ -257,8 +246,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5, if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0)) goto badframe; - if (do_sigaltstack(&frame->uc.uc_stack, NULL, - regs->regs[15]) == -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return r0; @@ -423,11 +411,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); err |= __put_user(NULL, &frame->uc.uc_link); - err |= __put_user((void *)current->sas_ss_sp, - &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(regs->regs[15]), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); + err |= __save_altstack(&frame->uc.uc_stack, regs->regs[15]); err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); -- cgit v1.2.3 From 881e252d6b37d7526008e3dcd4592823d9273e1f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 16:20:46 -0500 Subject: sh: switch to generic old sigsuspend() Signed-off-by: Al Viro --- arch/sh/Kconfig | 1 + arch/sh/include/asm/syscalls_32.h | 1 - arch/sh/kernel/signal_32.c | 11 ----------- arch/sh/kernel/signal_64.c | 11 ----------- 4 files changed, 1 insertion(+), 23 deletions(-) (limited to 'arch/sh/kernel/signal_32.c') diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index fb4a212c1bc4..d69caaf818bb 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -41,6 +41,7 @@ config SUPERH select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER select MODULES_USE_ELF_RELA select GENERIC_SIGALTSTACK + select OLD_SIGSUSPEND help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast diff --git a/arch/sh/include/asm/syscalls_32.h b/arch/sh/include/asm/syscalls_32.h index 77e2054d678e..dc72388e6e5b 100644 --- a/arch/sh/include/asm/syscalls_32.h +++ b/arch/sh/include/asm/syscalls_32.h @@ -9,7 +9,6 @@ struct pt_regs; -asmlinkage int sys_sigsuspend(old_sigset_t mask); asmlinkage int sys_sigaction(int sig, const struct old_sigaction __user *act, struct old_sigaction __user *oact); asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5, diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index e540d07dd5c5..c660a912a470 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -46,17 +46,6 @@ struct fdpic_func_descriptor { */ #define UNWINDGUARD 64 -/* - * Atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int -sys_sigsuspend(old_sigset_t mask) -{ - sigset_t blocked; - siginitset(&blocked, mask); - return sigsuspend(&blocked); -} - asmlinkage int sys_sigaction(int sig, const struct old_sigaction __user *act, struct old_sigaction __user *oact) diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c index 0fba66e2b202..8705f3ec24f4 100644 --- a/arch/sh/kernel/signal_64.c +++ b/arch/sh/kernel/signal_64.c @@ -127,17 +127,6 @@ static void do_signal(struct pt_regs *regs) restore_saved_sigmask(); } -/* - * Atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int -sys_sigsuspend(old_sigset_t mask) -{ - sigset_t blocked; - siginitset(&blocked, mask); - return sigsuspend(&blocked); -} - asmlinkage int sys_sigaction(int sig, const struct old_sigaction __user *act, struct old_sigaction __user *oact) -- cgit v1.2.3 From 0679a858c5439bf4bc05fd211d3690f82fefa5b6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 19:23:55 -0500 Subject: sh: switch to generic old sigaction() Signed-off-by: Al Viro --- arch/sh/Kconfig | 1 + arch/sh/include/asm/syscalls_32.h | 2 -- arch/sh/include/uapi/asm/signal.h | 2 ++ arch/sh/kernel/signal_32.c | 32 -------------------------------- arch/sh/kernel/signal_64.c | 32 -------------------------------- 5 files changed, 3 insertions(+), 66 deletions(-) (limited to 'arch/sh/kernel/signal_32.c') diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index d69caaf818bb..b5fd9f3c9925 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -42,6 +42,7 @@ config SUPERH select MODULES_USE_ELF_RELA select GENERIC_SIGALTSTACK select OLD_SIGSUSPEND + select OLD_SIGACTION help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast diff --git a/arch/sh/include/asm/syscalls_32.h b/arch/sh/include/asm/syscalls_32.h index dc72388e6e5b..4f97df87d7d5 100644 --- a/arch/sh/include/asm/syscalls_32.h +++ b/arch/sh/include/asm/syscalls_32.h @@ -9,8 +9,6 @@ struct pt_regs; -asmlinkage int sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact); asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7, struct pt_regs __regs); diff --git a/arch/sh/include/uapi/asm/signal.h b/arch/sh/include/uapi/asm/signal.h index 9ac530a90bce..cb96d02f55a4 100644 --- a/arch/sh/include/uapi/asm/signal.h +++ b/arch/sh/include/uapi/asm/signal.h @@ -5,11 +5,13 @@ #include +#ifndef __KERNEL__ struct old_sigaction { __sighandler_t sa_handler; old_sigset_t sa_mask; unsigned long sa_flags; void (*sa_restorer)(void); }; +#endif #endif /* __ASM_SH_SIGNAL_H */ diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index c660a912a470..6af6e7c5cac8 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -46,38 +46,6 @@ struct fdpic_func_descriptor { */ #define UNWINDGUARD 64 -asmlinkage int -sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - /* * Do a signal return; undo the signal stack. */ diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c index 8705f3ec24f4..23d4c71c91af 100644 --- a/arch/sh/kernel/signal_64.c +++ b/arch/sh/kernel/signal_64.c @@ -127,38 +127,6 @@ static void do_signal(struct pt_regs *regs) restore_saved_sigmask(); } -asmlinkage int -sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - /* * Do a signal return; undo the signal stack. */ -- cgit v1.2.3