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Partial update from FreeBSD.

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This commit is contained in:
Ralf Corsepius
2005-07-06 09:56:42 +00:00
parent f74912ae53
commit 6d06a6371b
1 changed files with 20 additions and 13 deletions
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33
cpukit/libnetworking/sys/uio.h
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@@ -10,10 +10,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
@@ -31,12 +27,18 @@
* SUCH DAMAGE.
*
* @(#)uio.h 8.5 (Berkeley) 2/22/94
* $FreeBSD: src/sys/sys/uio.h,v 1.38 2005/01/07 02:29:24 imp Exp $
*/
/*
* $Id$
*/
#ifndef _SYS_UIO_H_
#define _SYS_UIO_H_
#include <sys/cdefs.h>
/*
* XXX
* iov_base should be a void *.
@@ -46,6 +48,7 @@ struct iovec {
size_t iov_len; /* Length. */
};
#if __BSD_VISIBLE
enum uio_rw { UIO_READ, UIO_WRITE };
/* Segment flag values. */
@@ -55,8 +58,10 @@ enum uio_seg {
UIO_USERISPACE, /* from user I space */
UIO_NOCOPY /* don't copy, already in object */
};
#endif
#ifdef _KERNEL
struct uio {
struct iovec *uio_iov;
int uio_iovcnt;
@@ -69,22 +74,24 @@ struct uio {
/*
* Limits
*
* N.B.: UIO_MAXIOV must be no less than IOV_MAX from <sys/syslimits.h>
* which in turn must be no less than _XOPEN_IOV_MAX from <limits.h>. If
* we ever make this tunable (probably pointless), then IOV_MAX should be
* removed from <sys/syslimits.h> and applications would be expected to use
* sysconf(3) to find out the correct value, or else assume the worst
* (_XOPEN_IOV_MAX). Perhaps UIO_MAXIOV should be simply defined as
* IOV_MAX.
*/
#define UIO_MAXIOV 1024 /* max 1K of iov's */
#define UIO_SMALLIOV 8 /* 8 on stack, else malloc */
#endif /* _KERNEL */
#ifdef _KERNEL
int uiomove __P((caddr_t, int, struct uio *));
int uiomove(void *cp, int n, struct uio *uio);
#else /* !_KERNEL */
#include <sys/cdefs.h>
__BEGIN_DECLS
ssize_t readv __P((int, const struct iovec *, int));
ssize_t writev __P((int, const struct iovec *, int));
ssize_t readv(int, const struct iovec *, int);
ssize_t writev(int, const struct iovec *, int);
__END_DECLS
#endif /* _KERNEL */