user_regset_copyout

Name:These two parallel the two above, but for portions of a regset layout* that always read as all-zero or for which writes are ignored.

Proto:static inline int user_regset_copyout_zero(unsigned int *pos, unsigned int *count, void **kbuf, void __user **ubuf, const int start_pos, const int end_pos)

Type:int

Parameter:

Type	Parameter	Name
unsigned int *	pos
unsigned int *	count
void **	kbuf
void __user **	ubuf
const int	start_pos
const int	end_pos

314

If count == 0 Then Return 0

316

BUG_ON( * pos < start_pos)

317

If end_pos < 0 || pos < end_pos Then

318

copy = If end_pos < 0 Then count Else min - return minimum of two values of the same or compatible types*@x: first value*@y: second value( * count, end_pos - * pos)

320

If kbuf Then

321

memset( * kbuf, 0, copy)

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kbuf += copy

323

Else if Zero a block of memory in user space, with less checking Then Return -EFAULT

325

Else ubuf += copy

327

pos += copy

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count -= copy

330

Return 0

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