diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 07:56:45 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-14 15:17:29 +0100 |
| commit | 207bdae452e6d3eeba19cc3912e5dfb088adc376 (patch) | |
| tree | b2a11a7ba5ee7152d0a9e9f9d42a5dc02c48ed57 /arch/arm64/kernel/signal.c | |
| parent | take sys_rt_sigsuspend() prototype to linux/syscalls.h (diff) | |
| download | linux-207bdae452e6d3eeba19cc3912e5dfb088adc376.tar.xz linux-207bdae452e6d3eeba19cc3912e5dfb088adc376.zip | |
arm64: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/arm64/kernel/signal.c')
| -rw-r--r-- | arch/arm64/kernel/signal.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index abd756315cb5..890a591f75dd 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -149,8 +149,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs) if (restore_sigframe(regs, frame)) goto badframe; - if (do_sigaltstack(&frame->uc.uc_stack, - NULL, regs->sp) == -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return regs->regs[0]; @@ -164,12 +163,6 @@ badframe: return 0; } -asmlinkage long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, - unsigned long sp) -{ - return do_sigaltstack(uss, uoss, sp); -} - static int setup_sigframe(struct rt_sigframe __user *sf, struct pt_regs *regs, sigset_t *set) { @@ -250,7 +243,6 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, struct pt_regs *regs) { struct rt_sigframe __user *frame; - stack_t stack; int err = 0; frame = get_sigframe(ka, regs); @@ -260,12 +252,7 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, __put_user_error(0, &frame->uc.uc_flags, err); __put_user_error(NULL, &frame->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->sp); - stack.ss_size = current->sas_ss_size; - err |= __copy_to_user(&frame->uc.uc_stack, &stack, sizeof(stack)); - + err |= __save_altstack(&frame->uc.uc_stack, regs->sp); err |= setup_sigframe(frame, regs, set); if (err == 0) { setup_return(regs, ka, frame, usig); |