diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/Kconfig | 3 | ||||
| -rw-r--r-- | arch/arm/include/asm/signal.h | 7 | ||||
| -rw-r--r-- | arch/arm/kernel/calls.S | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/entry-common.S | 5 | ||||
| -rw-r--r-- | arch/arm/kernel/signal.c | 52 |
5 files changed, 6 insertions, 63 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 67874b82a4ed..db3152d6dd88 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -56,6 +56,9 @@ config ARM select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND select MODULES_USE_ELF_REL select CLONE_BACKWARDS + select GENERIC_SIGALTSTACK + select OLD_SIGSUSPEND3 + select OLD_SIGACTION help The ARM series is a line of low-power-consumption RISC chip designs licensed by ARM Ltd and targeted at embedded applications and diff --git a/arch/arm/include/asm/signal.h b/arch/arm/include/asm/signal.h index a5076b9bd463..c0eb412aff04 100644 --- a/arch/arm/include/asm/signal.h +++ b/arch/arm/include/asm/signal.h @@ -16,13 +16,6 @@ typedef struct { unsigned long sig[_NSIG_WORDS]; } sigset_t; -struct old_sigaction { - __sighandler_t sa_handler; - old_sigset_t sa_mask; - unsigned long sa_flags; - __sigrestore_t sa_restorer; -}; - #define __ARCH_HAS_SA_RESTORER #include <asm/sigcontext.h> diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index a4fda4e7a372..0cc57611fc4f 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -195,7 +195,7 @@ CALL(sys_getcwd) CALL(sys_capget) /* 185 */ CALL(sys_capset) - CALL(sys_sigaltstack_wrapper) + CALL(sys_sigaltstack) CALL(sys_sendfile) CALL(sys_ni_syscall) /* getpmsg */ CALL(sys_ni_syscall) /* putpmsg */ diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index a6c301e90a3b..3248cde504ed 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -514,11 +514,6 @@ sys_rt_sigreturn_wrapper: b sys_rt_sigreturn ENDPROC(sys_rt_sigreturn_wrapper) -sys_sigaltstack_wrapper: - ldr r2, [sp, #S_OFF + S_SP] - b do_sigaltstack -ENDPROC(sys_sigaltstack_wrapper) - sys_statfs64_wrapper: teq r1, #88 moveq r1, #84 diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 56f72d257ebd..07429a23c720 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -45,48 +45,6 @@ const unsigned long sigreturn_codes[7] = { MOV_R7_NR_RT_SIGRETURN, SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN, }; -/* - * atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, 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) -{ - 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; -} - #ifdef CONFIG_CRUNCH static int preserve_crunch_context(struct crunch_sigframe __user *frame) { @@ -300,7 +258,7 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs) if (restore_sigframe(regs, &frame->sig)) goto badframe; - if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT) + if (restore_altstack(&frame->sig.uc.uc_stack)) goto badframe; return regs->ARM_r0; @@ -486,7 +444,6 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, struct pt_regs *regs) { struct rt_sigframe __user *frame = get_sigframe(ka, regs, sizeof(*frame)); - stack_t stack; int err = 0; if (!frame) @@ -497,12 +454,7 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, __put_user_error(0, &frame->sig.uc.uc_flags, err); __put_user_error(NULL, &frame->sig.uc.uc_link, err); - memset(&stack, 0, sizeof(stack)); - stack.ss_sp = (void __user *)current->sas_ss_sp; - stack.ss_flags = sas_ss_flags(regs->ARM_sp); - stack.ss_size = current->sas_ss_size; - err |= __copy_to_user(&frame->sig.uc.uc_stack, &stack, sizeof(stack)); - + err |= __save_altstack(&frame->sig.uc.uc_stack, regs->ARM_sp); err |= setup_sigframe(&frame->sig, regs, set); if (err == 0) err = setup_return(regs, ka, frame->sig.retcode, frame, usig); |