* Copyright (c) 1982, 1986, 1991 Regents of the University of California.
* %sccs.include.redist.c%
* @(#)kern_subr.c 7.7 (Berkeley) %G%
register struct uio
*uio
;
register struct iovec
*iov
;
if (uio
->uio_rw
!= UIO_READ
&& uio
->uio_rw
!= UIO_WRITE
)
if (uio
->uio_segflg
== UIO_USERSPACE
&& uio
->uio_procp
!= curproc
)
while (n
> 0 && uio
->uio_resid
) {
switch (uio
->uio_segflg
) {
if (uio
->uio_rw
== UIO_READ
)
error
= copyout(cp
, iov
->iov_base
, cnt
);
error
= copyin(iov
->iov_base
, cp
, cnt
);
if (uio
->uio_rw
== UIO_READ
)
bcopy((caddr_t
)cp
, iov
->iov_base
, cnt
);
bcopy(iov
->iov_base
, (caddr_t
)cp
, cnt
);
* Give next character to user as result of read.
register struct uio
*uio
;
register struct iovec
*iov
;
if (uio
->uio_iovcnt
== 0)
if (iov
->iov_len
<= 0 || uio
->uio_resid
<= 0) {
switch (uio
->uio_segflg
) {
if (subyte(iov
->iov_base
, c
) < 0)
if (suibyte(iov
->iov_base
, c
) < 0)
register char *src
, *append
;
while (*src
++ = *append
++)
register char *to
, *from
;
for (; *from
= *to
; ++from
, ++to
)
register char *to
, *from
;
for (; cnt
&& (*to
= *from
); --cnt
, ++from
, ++to
)
#ifndef lint /* unused except by ct.c, other oddities XXX */
* Get next character written in by user from uio.
register struct iovec
*iov
;
if (uio
->uio_iovcnt
<= 0)
if (--uio
->uio_iovcnt
== 0)
switch (uio
->uio_segflg
) {
c
= fubyte(iov
->iov_base
);
c
= *(u_char
*) iov
->iov_base
;
c
= fuibyte(iov
->iov_base
);