C++ do_sigaltstack函数代码示例

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本文整理汇总了C++中do_sigaltstack函数的典型用法代码示例。如果您正苦于以下问题：C++ do_sigaltstack函数的具体用法？C++ do_sigaltstack怎么用？C++ do_sigaltstack使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了do_sigaltstack函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: sys32_sigaltstack

asmlinkage long
sys32_sigaltstack(const stack_ia32_t *uss_ptr, stack_ia32_t *uoss_ptr, 
				  struct pt_regs regs)
{
	stack_t uss,uoss; 
	int ret;
	mm_segment_t seg; 
	if (uss_ptr) {
		u32 val32;
		memset(&uss, 0, sizeof(stack_t));
	if (!access_ok(VERIFY_READ,uss_ptr,sizeof(stack_ia32_t)) ||
		    __get_user(val32, &uss_ptr->ss_sp) ||
		    __get_user(uss.ss_flags, &uss_ptr->ss_flags) ||
		    __get_user(uss.ss_size, &uss_ptr->ss_size))
		return -EFAULT;
		uss.ss_sp = u32_to_ptr(val32);	
	}
	seg = get_fs(); 
	set_fs(KERNEL_DS); 
	ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs.rsp);
	set_fs(seg); 
	if (ret >= 0 && uoss_ptr)  {
		if (!access_ok(VERIFY_WRITE,uoss_ptr,sizeof(stack_ia32_t)) ||
		    __put_user(ptr_to_u32(uoss.ss_sp), &uoss_ptr->ss_sp) ||
		    __put_user((u32)uoss.ss_flags, &uoss_ptr->ss_flags) ||
		    __put_user((u32)uoss.ss_size, &uoss_ptr->ss_size))
			ret = -EFAULT;
	} 	
	return ret;	
}

开发者ID:dduval，项目名称:kernel-rhel3，代码行数:30，代码来源:ia32_signal.c

示例2: sys_rt_sigreturn

asmlinkage int sys_rt_sigreturn(void)
{
	struct rt_sigframe __user *frame = (struct rt_sigframe __user *) __frame->sp;
	sigset_t set;
	int gr8;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &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_sigcontext(&frame->uc.uc_mcontext, &gr8))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, __frame->sp) == -EFAULT)
		goto badframe;

	return gr8;

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

开发者ID:3sOx，项目名称:asuswrt-merlin，代码行数:29，代码来源:signal.c

示例3: sys_rt_sigreturn

asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
{
	rt_sigframe __user *frame = (rt_sigframe __user *)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;
}

开发者ID:12019，项目名称:hg556a_source，代码行数:28，代码来源:signal.c

示例4: _sys_rt_sigreturn

/* sigreturn() returns long since it restores r0 in the interrupted code. */
long _sys_rt_sigreturn(struct pt_regs *regs)
{
	struct rt_sigframe __user *frame =
		(struct rt_sigframe __user *)(regs->sp);
	sigset_t set;
	long r0;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &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_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
		goto badframe;

	return r0;

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

开发者ID:1703011，项目名称:asuswrt-merlin，代码行数:31，代码来源:signal.c

示例5: sys_rt_sigreturn

asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
{
	struct rt_sigframe __user *frame;

	/* Always make any pending restarted system calls return -EINTR */
	current_thread_info()->restart_block.fn = do_no_restart_syscall;

	/*
	 * Since we stacked the signal on a 64-bit boundary,
	 * then 'sp' should be word aligned here.  If it's
	 * not, then the user is trying to mess with us.
	 */
	if (regs->ARM_sp & 7)
		goto badframe;

	frame = (struct rt_sigframe __user *)regs->ARM_sp;

	if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
		goto badframe;

	if (restore_sigframe(regs, &frame->sig))
		goto badframe;

	if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT)
		goto badframe;

	return regs->ARM_r0;

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

开发者ID:dh-electronics，项目名称:linux-am35x，代码行数:32，代码来源:signal.c

示例6: compat_sys_sigaltstack

long compat_sys_sigaltstack(const struct compat_sigaltstack __user *uss_ptr,
			    struct compat_sigaltstack __user *uoss_ptr,
			    struct pt_regs *regs)
{
	stack_t uss, uoss;
	int ret;
	mm_segment_t seg;

	if (uss_ptr) {
		u32 ptr;

		memset(&uss, 0, sizeof(stack_t));
		if (!access_ok(VERIFY_READ, uss_ptr, sizeof(*uss_ptr)) ||
			    __get_user(ptr, &uss_ptr->ss_sp) ||
			    __get_user(uss.ss_flags, &uss_ptr->ss_flags) ||
			    __get_user(uss.ss_size, &uss_ptr->ss_size))
			return -EFAULT;
		uss.ss_sp = compat_ptr(ptr);
	}
	seg = get_fs();
	set_fs(KERNEL_DS);
	ret = do_sigaltstack(uss_ptr ? (stack_t __user __force *)&uss : NULL,
			     (stack_t __user __force *)&uoss,
			     (unsigned long)compat_ptr(regs->sp));
	set_fs(seg);
	if (ret >= 0 && uoss_ptr)  {
		if (!access_ok(VERIFY_WRITE, uoss_ptr, sizeof(*uoss_ptr)) ||
		    __put_user(ptr_to_compat(uoss.ss_sp), &uoss_ptr->ss_sp) ||
		    __put_user(uoss.ss_flags, &uoss_ptr->ss_flags) ||
		    __put_user(uoss.ss_size, &uoss_ptr->ss_size))
			ret = -EFAULT;
	}
	return ret;
}

开发者ID:rslotte，项目名称:OGS-Tile，代码行数:34，代码来源:compat_signal.c

示例7: sys_rt_sigreturn

int sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
		     struct pt_regs *regs)
{
	struct rt_sigframe __user *rt_sf;

	/* Always make any pending restarted system calls return -EINTR */
	current_thread_info()->restart_block.fn = do_no_restart_syscall;

	rt_sf = (struct rt_sigframe __user *)
		(regs->gpr[1] + __SIGNAL_FRAMESIZE + 16);
	if (verify_area(VERIFY_READ, rt_sf, sizeof(struct rt_sigframe)))
		goto bad;
	if (do_setcontext(&rt_sf->uc, regs, 1))
		goto bad;

	/*
	 * It's not clear whether or why it is desirable to save the
	 * sigaltstack setting on signal delivery and restore it on
	 * signal return.  But other architectures do this and we have
	 * always done it up until now so it is probably better not to
	 * change it.  -- paulus
	 */
	do_sigaltstack(&rt_sf->uc.uc_stack, NULL, regs->gpr[1]);

	sigreturn_exit(regs);		/* doesn't return here */
	return 0;

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

开发者ID:iPodLinux，项目名称:linux-2.6.7-ipod，代码行数:31，代码来源:signal.c

示例8: sys_sigaltstack

asmlinkage int
sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
		unsigned long r2, unsigned long r3, unsigned long r4,
		unsigned long r5, unsigned long r6, struct pt_regs regs)
{
	return do_sigaltstack(uss, uoss, regs.spu);
}

开发者ID:Dronevery，项目名称:JetsonTK1-kernel，代码行数:7，代码来源:signal.c

示例9: sys32_sigaltstack

asmlinkage int
sys32_sigaltstack(const stack_t32 *uss, stack_t32 *uoss, struct pt_regs *regs)
{
	stack_t kss, koss;
	int ret, err = 0;
	mm_segment_t old_fs = get_fs();

	if (uss) {
		if (!access_ok(VERIFY_READ, uss, sizeof(*uss)))
			return -EFAULT;
		err |= __get_user(kss.ss_sp, &uss->ss_sp);
		err |= __get_user(kss.ss_size, &uss->ss_size);
		err |= __get_user(kss.ss_flags, &uss->ss_flags);
		if (err)
			return -EFAULT;
	}

	set_fs (KERNEL_DS);
	ret = do_sigaltstack(uss ? &kss : NULL , uoss ? &koss : NULL, regs->gprs[15]);
	set_fs (old_fs);

	if (!ret && uoss) {
		if (!access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)))
			return -EFAULT;
		err |= __put_user(koss.ss_sp, &uoss->ss_sp);
		err |= __put_user(koss.ss_size, &uoss->ss_size);
		err |= __put_user(koss.ss_flags, &uoss->ss_flags);
		if (err)
			return -EFAULT;
	}
	return ret;
}

开发者ID:SimonKagstrom，项目名称:mci500h-linux-2.4.27，代码行数:32，代码来源:signal32.c

示例10: sys_rt_sigreturn

asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
{
	struct rt_sigframe __user *frame;
	sigset_t set;
	unsigned long ax;

	frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &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_sigcontext(regs, &frame->uc.uc_mcontext, &ax))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
		goto badframe;

	return ax;

badframe:
	signal_fault(regs,frame,"sigreturn");
	return 0;
}

开发者ID:LouZiffer，项目名称:m900_kernel_cupcake-SDX，代码行数:30，代码来源:signal_64.c

示例11: sys_rt_sigreturn

asmlinkage int sys_rt_sigreturn(long r10, long r11, long r12, long r13,
                                long mof, long srp, struct pt_regs *regs)
{
	struct rt_sigframe __user *frame = (struct rt_sigframe *)rdusp();
	sigset_t set;

        if (((long)frame) & 3)
                goto badframe;

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

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, rdusp()) == -EFAULT)
		goto badframe;

	return regs->r10;

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

开发者ID:Blackburn29，项目名称:PsycoKernel，代码行数:32，代码来源:signal.c

示例12: sys_sigaltstack

asmlinkage long
sys_sigaltstack(const stack_t *uss, stack_t *uoss, unsigned long r5,
		unsigned long r6, unsigned long r7, unsigned long r8,
		struct pt_regs *regs)
{
        return do_sigaltstack(uss, uoss, regs->gpr[1]);
}

开发者ID:huangyukun2012，项目名称:linux-2.4.21，代码行数:7，代码来源:signal.c

示例13: do_rt_sigreturn

asmlinkage int do_rt_sigreturn(unsigned long __unused,...)
{
	struct pt_regs *regs = (struct pt_regs *) &__unused;
	unsigned long usp = rdusp();
	struct rt_sigframe *frame = (struct rt_sigframe *)(usp - 4);
	sigset_t set;
	int er0;

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

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_unlock_irq(&current->sighand->siglock);
	current->blocked = set;
	recalc_sigpending();
	spin_lock_irq(&current->sighand->siglock);
	
	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &er0))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, usp) == -EFAULT)
		goto badframe;

	return er0;

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

开发者ID:D-Land，项目名称:operating-systems，代码行数:31，代码来源:signal.c

示例14: sys_rt_sigreturn

asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
{
	struct rt_sigframe __user *frame =
		(struct rt_sigframe __user *)(regs->r1);

	sigset_t set;
	int rval;

	/* Always make any pending restarted system calls return -EINTR */
	current_thread_info()->restart_block.fn = do_no_restart_syscall;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;

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

	set_current_blocked(&set);

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

	/* It is more difficult to avoid calling this function than to
	 call it and ignore errors. */
	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->r1) == -EFAULT)
		goto badframe;

	return rval;

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

开发者ID:AdrianHuang，项目名称:linux-3.8.13，代码行数:33，代码来源:signal.c

示例15: do_rt_sigreturn

void do_rt_sigreturn(struct pt_regs *regs)
{
	struct rt_signal_frame *sf;
	unsigned long tpc, tnpc, tstate;
	__siginfo_fpu_t *fpu_save;
	sigset_t set;
	stack_t st;
	int err;

	synchronize_user_stack ();
	sf = (struct rt_signal_frame *)
		(regs->u_regs [UREG_FP] + STACK_BIAS);

	/* 1. Make sure we are not getting garbage from the user */
	if (((unsigned long) sf) & 3)
		goto segv;

	err = get_user(tpc, &sf->regs.tpc);
	err |= __get_user(tnpc, &sf->regs.tnpc);
	if ((current->thread.flags & SPARC_FLAG_32BIT) != 0) {
		tpc &= 0xffffffff;
		tnpc &= 0xffffffff;
	}
	err |= ((tpc | tnpc) & 3);

	/* 2. Restore the state */
	err |= __get_user(regs->y, &sf->regs.y);
	err |= __get_user(tstate, &sf->regs.tstate);
	err |= copy_from_user(regs->u_regs, sf->regs.u_regs, sizeof(regs->u_regs));

	/* User can only change condition codes in %tstate. */
	regs->tstate &= ~(TSTATE_ICC);
	regs->tstate |= (tstate & TSTATE_ICC);

	err |= __get_user(fpu_save, &sf->fpu_save);
	if (fpu_save)
		err |= restore_fpu_state(regs, &sf->fpu_state);

	err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
	err |= __copy_from_user(&st, &sf->stack, sizeof(stack_t));
	
	if (err)
		goto segv;
		
	regs->tpc = tpc;
	regs->tnpc = tnpc;
	
	/* It is more difficult to avoid calling this function than to
	   call it and ignore errors.  */
	do_sigaltstack(&st, NULL, (unsigned long)sf);

	sigdelsetmask(&set, ~_BLOCKABLE);
	spin_lock_irq(&current->sigmask_lock);
	current->blocked = set;
	recalc_sigpending(current);
	spin_unlock_irq(&current->sigmask_lock);
	return;
segv:
	send_sig(SIGSEGV, current, 1);
}

开发者ID:TitaniumBoy，项目名称:lin，代码行数:60，代码来源:signal.c

示例16: __sys_rt_sigreturn

asmlinkage int __sys_rt_sigreturn(struct pt_regs *regs)
{
	struct rt_sigframe __user *frame;

	/*                                                              */
	current_thread_info()->restart_block.fn = do_no_restart_syscall;

	/*
                                                     
                                                   
                                                 
  */
	if (regs->UCreg_sp & 7)
		goto badframe;

	frame = (struct rt_sigframe __user *)regs->UCreg_sp;

	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;

	if (restore_sigframe(regs, &frame->sig))
		goto badframe;

	if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->UCreg_sp)
			== -EFAULT)
		goto badframe;

	return regs->UCreg_00;

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

开发者ID:romanbb，项目名称:android_kernel_lge_d851，代码行数:33，代码来源:signal.c

示例17: rt_restore_ucontext

static inline int
rt_restore_ucontext(struct pt_regs *regs, struct ucontext *uc, int *pd0)
{
	int temp;
	greg_t *gregs = uc->uc_mcontext.gregs;
	unsigned long usp;
	int err;

	err = __get_user(temp, &uc->uc_mcontext.version);
	if (temp != MCONTEXT_VERSION)
		goto badframe;
	/* restore passed registers */
	err |= __get_user(regs->er0, &gregs[0]);
	err |= __get_user(regs->er1, &gregs[1]);
	err |= __get_user(regs->er2, &gregs[2]);
	err |= __get_user(regs->er3, &gregs[3]);
	err |= __get_user(regs->er4, &gregs[4]);
	err |= __get_user(regs->er5, &gregs[5]);
	err |= __get_user(regs->er6, &gregs[6]);
	err |= __get_user(usp, &gregs[7]);
	wrusp(usp);
	err |= __get_user(regs->pc, &gregs[8]);
	err |= __get_user(temp, &gregs[9]);
	regs->ccr = (regs->ccr & 0x10) | (temp & 0xef);
	regs->orig_er0 = -1;		/* disable syscall checks */

	if (do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT)
		goto badframe;

	*pd0 = regs->er0;
	return err;

badframe:
	return 1;
}

开发者ID:BackupTheBerlios，项目名称:tuxap，代码行数:35，代码来源:signal.c

示例18: sys_sigaltstack

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);
}

开发者ID:ut-osa，项目名称:syncchar，代码行数:7，代码来源:signal.c

示例19: sys_rt_sigreturn

/*
 * realtime signal return syscall
 */
asmlinkage long sys_rt_sigreturn(void)
{
	struct rt_sigframe __user *frame;
	sigset_t set;
	long d0;

	frame = (struct rt_sigframe __user *) current_frame()->sp;
	if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
		goto badframe;
	if (__copy_from_user(&set, &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_sigcontext(current_frame(), &frame->uc.uc_mcontext, &d0))
		goto badframe;

	if (do_sigaltstack(&frame->uc.uc_stack, NULL, current_frame()->sp) ==
	    -EFAULT)
		goto badframe;

	return d0;

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

开发者ID:CSCLOG，项目名称:beaglebone，代码行数:34，代码来源:signal.c

示例20: sys_sigaltstack

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);
}

开发者ID:KrisChaplin，项目名称:LRT2x4_v1.0.2.06_GPL_source，代码行数:8，代码来源:signal.c

注：本文中的do_sigaltstack函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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C++ do_shutdown函数代码示例发布时间：2022-05-30

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C++ do_sigaltstack函数代码示例

示例1: sys32_sigaltstack

示例2: sys_rt_sigreturn

示例3: sys_rt_sigreturn

示例4: _sys_rt_sigreturn

示例5: sys_rt_sigreturn

示例6: compat_sys_sigaltstack

示例7: sys_rt_sigreturn

示例8: sys_sigaltstack

示例9: sys32_sigaltstack

示例10: sys_rt_sigreturn

示例11: sys_rt_sigreturn

示例12: sys_sigaltstack

示例13: do_rt_sigreturn

示例14: sys_rt_sigreturn

示例15: do_rt_sigreturn

示例16: __sys_rt_sigreturn

示例17: rt_restore_ucontext

示例18: sys_sigaltstack

示例19: sys_rt_sigreturn

示例20: sys_sigaltstack

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