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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 08:52:40 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-04 00:15:58 +0100 |
| commit | e8d9ef09df5f86f564a2ab6e8f1397121b1bad66 (patch) | |
| tree | 41aca13ff329fe314a1ebbe3daa021d2f9a4eaed /arch/ia64 | |
| parent | take sys_rt_sigsuspend() prototype to linux/syscalls.h (diff) | |
| download | linux-e8d9ef09df5f86f564a2ab6e8f1397121b1bad66.tar.xz linux-e8d9ef09df5f86f564a2ab6e8f1397121b1bad66.zip | |
ia64: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/ia64/kernel/signal.c | 19 |
2 files changed, 4 insertions, 16 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 3279646120e3..98482d1cbc5b 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -42,6 +42,7 @@ config IA64 select GENERIC_TIME_VSYSCALL_OLD select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_RELA + select GENERIC_SIGALTSTACK default y help The Itanium Processor Family is Intel's 64-bit successor to diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 680b73786be8..3637e03d2282 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -39,14 +39,6 @@ # define GET_SIGSET(k,u) __get_user((k)->sig[0], &(u)->sig[0]) #endif -asmlinkage long -sys_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, long arg2, - long arg3, long arg4, long arg5, long arg6, long arg7, - struct pt_regs regs) -{ - return do_sigaltstack(uss, uoss, regs.r12); -} - static long restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) { @@ -208,11 +200,8 @@ ia64_rt_sigreturn (struct sigscratch *scr) printk("SIG return (%s:%d): sp=%lx ip=%lx\n", current->comm, current->pid, scr->pt.r12, scr->pt.cr_iip); #endif - /* - * It is more difficult to avoid calling this function than to - * call it and ignore errors. - */ - do_sigaltstack(&sc->sc_stack, NULL, scr->pt.r12); + if (restore_altstack(&sc->sc_stack)) + goto give_sigsegv; return retval; give_sigsegv: @@ -376,9 +365,7 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, err |= copy_siginfo_to_user(&frame->info, info); - err |= __put_user(current->sas_ss_sp, &frame->sc.sc_stack.ss_sp); - err |= __put_user(current->sas_ss_size, &frame->sc.sc_stack.ss_size); - err |= __put_user(sas_ss_flags(scr->pt.r12), &frame->sc.sc_stack.ss_flags); + err |= __save_altstack(&frame->sc.sc_stack, scr->pt.r12); err |= setup_sigcontext(&frame->sc, set, scr); if (unlikely(err)) |