diff options
Diffstat (limited to 'arch/mips/kernel/signal.c')
| -rw-r--r-- | arch/mips/kernel/signal.c | 60 |
1 files changed, 11 insertions, 49 deletions
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index b6aa77035019..b5e88fd83277 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -247,35 +247,12 @@ void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, */ #ifdef CONFIG_TRAD_SIGNALS -asmlinkage int sys_sigsuspend(nabi_no_regargs struct pt_regs regs) +SYSCALL_DEFINE1(sigsuspend, sigset_t __user *, uset) { - sigset_t newset; - sigset_t __user *uset; - - uset = (sigset_t __user *) regs.regs[4]; - if (copy_from_user(&newset, uset, sizeof(sigset_t))) - return -EFAULT; - return sigsuspend(&newset); + return sys_rt_sigsuspend(uset, sizeof(sigset_t)); } #endif -asmlinkage int sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs) -{ - sigset_t newset; - sigset_t __user *unewset; - size_t sigsetsize; - - /* XXX Don't preclude handling different sized sigset_t's. */ - sigsetsize = regs.regs[5]; - if (sigsetsize != sizeof(sigset_t)) - return -EINVAL; - - unewset = (sigset_t __user *) regs.regs[4]; - if (copy_from_user(&newset, unewset, sizeof(newset))) - return -EFAULT; - return sigsuspend(&newset); -} - #ifdef CONFIG_TRAD_SIGNALS SYSCALL_DEFINE3(sigaction, int, sig, const struct sigaction __user *, act, struct sigaction __user *, oact) @@ -317,15 +294,6 @@ SYSCALL_DEFINE3(sigaction, int, sig, const struct sigaction __user *, act, } #endif -asmlinkage int sys_sigaltstack(nabi_no_regargs struct pt_regs regs) -{ - const stack_t __user *uss = (const stack_t __user *) regs.regs[4]; - stack_t __user *uoss = (stack_t __user *) regs.regs[5]; - unsigned long usp = regs.regs[29]; - - return do_sigaltstack(uss, uoss, usp); -} - #ifdef CONFIG_TRAD_SIGNALS asmlinkage void sys_sigreturn(nabi_no_regargs struct pt_regs regs) { @@ -382,9 +350,8 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs) else if (sig) force_sig(sig, current); - /* It is more difficult to avoid calling this function than to - call it and ignore errors. */ - do_sigaltstack(&frame->rs_uc.uc_stack, NULL, regs.regs[29]); + if (restore_altstack(&frame->rs_uc.uc_stack)) + goto badframe; /* * Don't let your children do this ... @@ -445,7 +412,7 @@ give_sigsegv: #endif static int setup_rt_frame(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, sigset_t *set, + struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) { struct rt_sigframe __user *frame; @@ -458,15 +425,10 @@ static int setup_rt_frame(void *sig_return, struct k_sigaction *ka, /* Create siginfo. */ err |= copy_siginfo_to_user(&frame->rs_info, info); - /* Create the ucontext. */ + /* Create the ucontext. */ err |= __put_user(0, &frame->rs_uc.uc_flags); err |= __put_user(NULL, &frame->rs_uc.uc_link); - err |= __put_user((void __user *)current->sas_ss_sp, - &frame->rs_uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(regs->regs[29]), - &frame->rs_uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, - &frame->rs_uc.uc_stack.ss_size); + err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[29]); err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext); err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set)); @@ -506,7 +468,7 @@ struct mips_abi mips_abi = { .setup_frame = setup_frame, .signal_return_offset = offsetof(struct mips_vdso, signal_trampoline), #endif - .setup_rt_frame = setup_rt_frame, + .setup_rt_frame = setup_rt_frame, .rt_signal_return_offset = offsetof(struct mips_vdso, rt_signal_trampoline), .restart = __NR_restart_syscall @@ -538,7 +500,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info, regs->cp0_epc -= 4; } - regs->regs[0] = 0; /* Don't deal with this again. */ + regs->regs[0] = 0; /* Don't deal with this again. */ } if (sig_uses_siginfo(ka)) @@ -562,7 +524,7 @@ static void do_signal(struct pt_regs *regs) signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { - /* Whee! Actually deliver the signal. */ + /* Whee! Actually deliver the signal. */ handle_signal(signr, &info, &ka, regs); return; } @@ -583,7 +545,7 @@ static void do_signal(struct pt_regs *regs) regs->cp0_epc -= 4; break; } - regs->regs[0] = 0; /* Don't deal with this again. */ + regs->regs[0] = 0; /* Don't deal with this again. */ } /* |