C++ (Cpp) restore_sigregs示例

示例#1

文件： signal.c 项目： ivucica/linux

asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
{
	rt_sigframe __user *frame = (rt_sigframe __user *)regs->gprs[15];
	sigset_t set;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set.sig, &frame->uc.uc_sigmask, sizeof(set)))
		goto badframe;

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_lock_irq(&current->sighand->siglock);
	current->blocked = set;
	recalc_sigpending();
	spin_unlock_irq(&current->sighand->siglock);

	if (restore_sigregs(regs, &frame->uc.uc_mcontext))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL,
			   regs->gprs[15]) == -EFAULT)
		goto badframe;
	return regs->gprs[2];

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}

示例#2

文件： signal.c 项目： ivucica/linux

asmlinkage long sys_sigreturn(struct pt_regs *regs)
{
	sigframe __user *frame = (sigframe __user *)regs->gprs[15];
	sigset_t set;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE))
		goto badframe;

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_lock_irq(&current->sighand->siglock);
	current->blocked = set;
	recalc_sigpending();
	spin_unlock_irq(&current->sighand->siglock);

	if (restore_sigregs(regs, &frame->sregs))
		goto badframe;

	return regs->gprs[2];

badframe:
	force_sig(SIGSEGV, current);
	return 0;
}

示例#3

asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
{
    rt_sigframe *frame = (rt_sigframe *)regs->gprs[15];
    sigset_t set;

    if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
        goto badframe;
    if (__copy_from_user(&set.sig, &frame->uc.uc_sigmask, sizeof(set)))
        goto badframe;

    sigdelsetmask(&set, ~_BLOCKABLE);
    spin_lock_irq(&current->sighand->siglock);
    current->blocked = set;
    recalc_sigpending();
    spin_unlock_irq(&current->sighand->siglock);

    if (restore_sigregs(regs, &frame->uc.uc_mcontext))
        goto badframe;

    /* It is more difficult to avoid calling this function than to
       call it and ignore errors.  */
    do_sigaltstack(&frame->uc.uc_stack, NULL, regs->gprs[15]);
    return regs->gprs[2];

badframe:
    force_sig(SIGSEGV, current);
    return 0;
}

示例#4

文件： sigframe-s390x-linux.c 项目： Grindland/valgrind-android

static
SizeT restore_rt_sigframe ( ThreadState *tst,
                            struct rt_sigframe *frame, Int *sigNo )
{
   if (restore_vg_sigframe(tst, &frame->vg, sigNo)) {
      restore_sigregs(tst, &frame->uc.uc_mcontext);
   }
   return sizeof(*frame);
}

示例#5

文件： sigframe-s390x-linux.c 项目： Grindland/valgrind-android

static
SizeT restore_sigframe ( ThreadState *tst,
                         struct sigframe *frame, Int *sigNo )
{
   if (restore_vg_sigframe(tst, &frame->vg, sigNo))
      restore_sigregs(tst, frame->sc.sregs);

   return sizeof(*frame);
}

示例#6

文件： signal.c 项目： chinnyannieb/empeg-hijack

static int
restore_sigcontext(struct sigcontext *sc, pt_regs *regs,
		 sigregs *sregs,sigset_t *set)
{
	unsigned int err;

	err=restore_sigregs(regs,sregs);
	if(!err)
		err=__copy_from_user(&set->sig,&sc->oldmask,SIGMASK_COPY_SIZE);
		return(err);
}