#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/errno.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
#include <asm/lowcore.h>
+#include "entry.h"
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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_restorer, &act->sa_restorer) ||
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+ __get_user(mask, &act->sa_mask))
return -EFAULT;
- __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- __get_user(mask, &act->sa_mask);
siginitset(&new_ka.sa.sa_mask, mask);
}
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_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;
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
}
return ret;
}
asmlinkage long
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
- struct pt_regs *regs)
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
{
+ struct pt_regs *regs = task_pt_regs(current);
return do_sigaltstack(uss, uoss, regs->gprs[15]);
}
/* Copy a 'clean' PSW mask to the user to avoid leaking
information about whether PER is currently on. */
- user_sregs.regs.psw.mask = PSW_MASK_MERGE(PSW_USER_BITS, regs->psw.mask);
+ user_sregs.regs.psw.mask = PSW_MASK_MERGE(psw_user_bits, regs->psw.mask);
user_sregs.regs.psw.addr = regs->psw.addr;
memcpy(&user_sregs.regs.gprs, ®s->gprs, sizeof(sregs->regs.gprs));
memcpy(&user_sregs.regs.acrs, current->thread.acrs,
return 0;
}
-asmlinkage long sys_sigreturn(struct pt_regs *regs)
+asmlinkage long sys_sigreturn(void)
{
+ struct pt_regs *regs = task_pt_regs(current);
sigframe __user *frame = (sigframe __user *)regs->gprs[15];
sigset_t set;
return 0;
}
-asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
+asmlinkage long sys_rt_sigreturn(void)
{
+ struct pt_regs *regs = task_pt_regs(current);
rt_sigframe __user *frame = (rt_sigframe __user *)regs->gprs[15];
sigset_t set;
/* Default to using normal stack */
sp = regs->gprs[15];
+ /* Overflow on alternate signal stack gives SIGSEGV. */
+ if (on_sig_stack(sp) && !on_sig_stack((sp - frame_size) & -8UL))
+ return (void __user *) -1UL;
+
/* This is the X/Open sanctioned signal stack switching. */
if (ka->sa.sa_flags & SA_ONSTACK) {
if (! sas_ss_flags(sp))
if (!access_ok(VERIFY_WRITE, frame, sizeof(sigframe)))
goto give_sigsegv;
+ if (frame == (void __user *) -1UL)
+ goto give_sigsegv;
+
if (__copy_to_user(&frame->sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE))
goto give_sigsegv;
if (!access_ok(VERIFY_WRITE, frame, sizeof(rt_sigframe)))
goto give_sigsegv;
+ if (frame == (void __user *) -1UL)
+ goto give_sigsegv;
+
if (copy_siginfo_to_user(&frame->info, info))
goto give_sigsegv;
if (signr > 0) {
/* Whee! Actually deliver the signal. */
+ int ret;
#ifdef CONFIG_COMPAT
if (test_thread_flag(TIF_31BIT)) {
- extern int handle_signal32(unsigned long sig,
- struct k_sigaction *ka,
- siginfo_t *info,
- sigset_t *oldset,
- struct pt_regs *regs);
- if (handle_signal32(
- signr, &ka, &info, oldset, regs) == 0) {
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- clear_thread_flag(TIF_RESTORE_SIGMASK);
- }
- return;
+ ret = handle_signal32(signr, &ka, &info, oldset, regs);
}
+ else
#endif
- if (handle_signal(signr, &ka, &info, oldset, regs) == 0) {
+ ret = handle_signal(signr, &ka, &info, oldset, regs);
+ if (!ret) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
+
+ /*
+ * If we would have taken a single-step trap
+ * for a normal instruction, act like we took
+ * one for the handler setup.
+ */
+ if (current->thread.per_info.single_step)
+ set_thread_flag(TIF_SINGLE_STEP);
}
return;
}