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iov->iov_base = (char *)iov->iov_base + 1;		iov->iov_base = (char *)iov->iov_base + 1;
iov->iov_len--;		iov->iov_len--;
uio->uio_resid--;		uio->uio_resid--;
uio->uio_offset++;		uio->uio_offset++;
return (0);		return (0);
}		}

int		int
copyinfrom(const void * __restrict src, void * __restrict dst, size_t len,
int seg)
{
int error = 0;

switch (seg) {
case UIO_USERSPACE:
error = copyin(src, dst, len);
break;
case UIO_SYSSPACE:
bcopy(src, dst, len);
break;
default:
panic("copyinfrom: bad seg %d\n", seg);
}
return (error);
}

int
copyinstrfrom(const void * __restrict src, void * __restrict dst, size_t len,
size_t * __restrict copied, int seg)
{
int error = 0;

switch (seg) {
case UIO_USERSPACE:
error = copyinstr(src, dst, len, copied);
break;
case UIO_SYSSPACE:
error = copystr(src, dst, len, copied);
break;
default:
panic("copyinstrfrom: bad seg %d\n", seg);
}
return (error);
}

int
copyiniov(const struct iovec iovp, u_int iovcnt, struct iovec *iov, int error)		copyiniov(const struct iovec iovp, u_int iovcnt, struct iovec *iov, int error)
{		{
u_int iovlen;		u_int iovlen;

*iov = NULL;		*iov = NULL;
if (iovcnt > UIO_MAXIOV)		if (iovcnt > UIO_MAXIOV)
return (error);		return (error);
iovlen = iovcnt * sizeof (struct iovec);		iovlen = iovcnt * sizeof (struct iovec);
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