#define __do_NAME(x) CAT3(__do_proc_do, x, vec_minmax)
#define do_NAME(x)   CAT3(do_proc_do,   x, vec_minmax)
#define NAME(x)      CAT3(proc_do,      x, vec_minmax)
#define get_NAME(x)  CAT3(proc_get_,    x,)
#define put_NAME(x)  CAT3(proc_put_,    x,)

#define TMPBUFLEN 22
/**
 * proc_get_long - reads an ASCII formatted integer from a user buffer
 *
 * @buf: a kernel buffer
 * @size: size of the kernel buffer
 * @val: this is where the number will be stored
 * @neg: set to %TRUE if number is negative
 * @perm_tr: a vector which contains the allowed trailers
 * @perm_tr_len: size of the perm_tr vector
 * @tr: pointer to store the trailer character
 *
 * In case of success %0 is returned and @buf and @size are updated with
 * the amount of bytes read. If @tr is non-NULL and a trailing
 * character exists (size is non-zero after returning from this
 * function), @tr is updated with the trailing character.
 */
static int get_NAME(sTYPE)(char **buf, size_t *size,
			  uTYPE *val, bool *neg,
			  const char *perm_tr, unsigned perm_tr_len, char *tr)
{
	int len;
	char *p, tmp[TMPBUFLEN];

	if (!*size)
		return -EINVAL;

	len = *size;
	if (len > TMPBUFLEN - 1)
		len = TMPBUFLEN - 1;

	memcpy(tmp, *buf, len);

	tmp[len] = 0;
	p = tmp;
	if (*p == '-' && *size > 1) {
		*neg = true;
		p++;
	} else
		*neg = false;
	if (!isdigit(*p))
		return -EINVAL;

	*val = STR2TYPE (p, &p, 0);

	len = p - tmp;

	/* We don't know if the next char is whitespace thus we may accept
	 * invalid integers (e.g. 1234...a) or two integers instead of one
	 * (e.g. 123...1). So lets not allow such large numbers. */
	if (len == TMPBUFLEN - 1)
		return -EINVAL;

	if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len))
		return -EINVAL;

	if (tr && (len < *size))
		*tr = *p;

	*buf += len;
	*size -= len;

	return 0;
}

/**
 * proc_put_long - converts an integer to a decimal ASCII formatted string
 *
 * @buf: the user buffer
 * @size: the size of the user buffer
 * @val: the integer to be converted
 * @neg: sign of the number, %TRUE for negative
 *
 * In case of success %0 is returned and @buf and @size are updated with
 * the amount of bytes written.
 */
static int put_NAME(sTYPE)(void __user **buf, size_t *size,
        uTYPE val, bool neg)
{
	int len;
	char tmp[TMPBUFLEN], *p = tmp;

	sprintf(p, OFMT, neg ? "-" : "", val);
	len = strlen(tmp);
	if (len > *size)
		len = *size;
	if (copy_to_user(*buf, tmp, len))
		return -EFAULT;
	*size -= len;
	*buf += len;
	return 0;
}
#undef TMPBUFLEN

static int __do_NAME(TYPE)(void *data, struct ctl_table *table, int write,
				     void __user *buffer,
				     size_t *lenp, loff_t *ppos,
				     TYPE convmul,
				     TYPE convdiv)
{
	TYPE *i, *min, *max;
	int vleft, first = 1, err = 0;
	unsigned long page = 0;
	size_t left;
	char *kbuf;

	if (!data || !table->maxlen || !*lenp || (*ppos && !write)) {
		*lenp = 0;
		return 0;
	}

	i = (TYPE *) data;
	min = (TYPE *) table->extra1;
	max = (TYPE *) table->extra2;
	vleft = table->maxlen / sizeof(TYPE);
	left = *lenp;

	if (write) {
		if (left > PAGE_SIZE - 1)
			left = PAGE_SIZE - 1;
		page = __get_free_page(GFP_TEMPORARY);
		kbuf = (char *) page;
		if (!kbuf)
			return -ENOMEM;
		if (copy_from_user(kbuf, buffer, left)) {
			err = -EFAULT;
			goto free;
		}
		kbuf[left] = 0;
	}

	for (; left && vleft--; i++, first = 0) {
		TYPE val;

		if (write) {
			bool neg;

			left -= proc_skip_spaces(&kbuf);

			err = get_NAME(sTYPE)(&kbuf, &left, &val, &neg,
					     proc_wspace_sep,
					     sizeof(proc_wspace_sep), NULL);
			if (err)
				break;
			if (neg)
				continue;
			if ((min && val < *min) || (max && val > *max))
				continue;
			*i = val;
		} else {
			val = convdiv * (*i) / convmul;
			if (!first)
				err = proc_put_char(&buffer, &left, '\t');
			err = put_NAME(sTYPE)(&buffer, &left, val, false);
			if (err)
				break;
		}
	}

	if (!write && !first && left && !err)
		err = proc_put_char(&buffer, &left, '\n');
// FIXME: Why is the following line different from the
// corresponding line in __do_proc_dointvec???
	if (write && !err)
		left -= proc_skip_spaces(&kbuf);
free:
	if (write) {
		free_page(page);
		if (first)
			return err ? : -EINVAL;
	}
	*lenp -= left;
	*ppos += *lenp;
	return err;
}

static int do_NAME(TYPE)(struct ctl_table *table, int write,
				     void __user *buffer,
				     size_t *lenp, loff_t *ppos,
				     TYPE convmul,
				     TYPE convdiv)
{
        	return __do_NAME(TYPE)(table->data, table, write,
			buffer, lenp, ppos, convmul, convdiv);
}

/**
 * proc_doulongvec_minmax - read a vector of long integers with min/max values
 * @table: the sysctl table
 * @write: %TRUE if this is a write to the sysctl file
 * @buffer: the user buffer
 * @lenp: the size of the user buffer
 * @ppos: file position
 *
 * Reads/writes up to table->maxlen/sizeof(TYPE) variables of type TYPE
 * values from/to the user buffer, treated as an ASCII string.
 *
 * This routine will ensure the values are within the range specified by
 * table->extra1 (min) and table->extra2 (max).
 *
 * Returns 0 on success.
 */
int NAME(TYPE)(struct ctl_table *table, int write,
			   void __user *buffer, size_t *lenp, loff_t *ppos)
{
    return do_NAME(TYPE)(table, write, buffer, lenp, ppos, 1l, 1l);
}