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authorUlrich Drepper <drepper@redhat.com>2000-03-21 01:29:48 +0000
committerUlrich Drepper <drepper@redhat.com>2000-03-21 01:29:48 +0000
commit7e836977ea1ccf19880978549590125832226525 (patch)
treeda1be89473bffb9b69226b716332233d31733933 /sysdeps/unix/sysv/aix/bits/uio.h
parentdb8409143eb9aee94e436d22d4c9260d8840b337 (diff)
downloadglibc-7e836977ea1ccf19880978549590125832226525.tar.gz
Update.
2000-03-20 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/aix/*: Add initial code for port to AIX 4.3.
Diffstat (limited to 'sysdeps/unix/sysv/aix/bits/uio.h')
-rw-r--r--sysdeps/unix/sysv/aix/bits/uio.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/aix/bits/uio.h b/sysdeps/unix/sysv/aix/bits/uio.h
new file mode 100644
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+++ b/sysdeps/unix/sysv/aix/bits/uio.h
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+/* Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _SYS_UIO_H
+# error "Never include <bits/uio.h> directly; use <sys/uio.h> instead."
+#endif
+
+
+#include <sys/types.h>
+
+
+/* Size of object which can be written atomically.
+
+ This macro has different values in different kernel versions. The
+ latest versions of ther kernel use 1024 and this is good choice. Since
+ the C library implementation of readv/writev is able to emulate the
+ functionality even if the currently running kernel does not support
+ this large value the readv/writev call will not fail because of this. */
+#define UIO_MAXIOV 16
+
+
+/* Structure for scatter/gather I/O. */
+struct iovec
+ {
+ void *iov_base; /* Pointer to data. */
+ size_t iov_len; /* Length of data. */
+ };