Reimplement fix for an imcompatibility between ORBit and FreeBSD properly.

Instead of replacing writev(2) with loop based on write(2), test system
limit on the number of vectors writev(2) accepts and split call to writev(2)
to several calls in such a way that number of vectors in each call doesn't
exceed this limit (aka UIO_MAXIOV). Bump PORTREVISION.

1 files changed, 41 insertions, 0 deletions

diff --git a/devel/ORBit2/files/patch-src::ORBitutil::compat.c b/devel/ORBit2/files/patch-src::ORBitutil::compat.c
new file mode 100644
index 000000000000..823471b2b622
--- /dev/null
+++ b/devel/ORBit2/files/patch-src::ORBitutil::compat.c
@@ -0,0 +1,41 @@
+
+$FreeBSD$
+
+--- src/ORBitutil/compat.c.orig	Wed Sep  9 07:08:14 1998
++++ src/ORBitutil/compat.c	Sat Oct 27 15:49:13 2001
+@@ -1,18 +1,28 @@
++#include <errno.h>
++
+ #include "config.h"
+ #include "util.h"
+ 
+-#define MAX_IOVS 16
+-
+ int g_writev(int fd, const struct  iovec *  vector,  size_t count)
+ {
+-  int retval = 0;
++  int retval, wcur;
++  int sum = 0;
+ 
+-  while(count > MAX_IOVS) {
+-    retval += writev(fd, vector, MAX_IOVS);
+-    vector += MAX_IOVS; count -= MAX_IOVS;
++  for (wcur = MAXIOV; wcur == MAXIOV && count != 0; count -= MAXIOV) {
++    if (wcur > count)
++      wcur = count;
++    do {
++      retval = writev(fd, vector, wcur);
++    } while (retval < 0 && errno == EAGAIN);
++    if (retval < 0) {
++      sum = retval;
++      break;
++    }
++    vector = &(vector[wcur]);
++    sum += retval;
+   }
+ 
+-  return writev(fd, vector, count) + retval;
++  return sum;
+ }
+ 
+ #ifndef HAVE_INET_ATON