* io.c (simple_sendfile): added for BSD version of sendfile(2).

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Mon Dec 13 11:21:14 2010  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* io.c (simple_sendfile): added for BSD version of sendfile(2).
+
 Mon Dec 13 09:50:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* lib/net/http.rb (Net::HTTPRequest#set_form): Added to support

io.c

@@ -8216,6 +8216,26 @@ simple_sendfile(int out_fd, int in_fd, off_t *offset, off_t count)
     return sendfile(out_fd, in_fd, offset, (size_t)count);
 }
 
+# elif defined(__FreeBSD__) || defined(__DragonFly__) || defined(__APPLE__)
+#  ifdef HAVE_SYS_UIO_H
+#   include <sys/uio.h>
+#  endif
+
+static ssize_t
+simple_sendfile(int out_fd, int in_fd, off_t *offset, off_t count)
+{
+    int r;
+    size_t sbytes;
+#  if SIZEOF_OFF_T > SIZEOF_SIZE_T
+    /* we are limited by the 32-bit ssize_t return value on 32-bit */
+    if (count > (off_t)SSIZE_MAX)
+        count = SSIZE_MAX;
+#  endif
+    r = sendfile(in_fd, out_fd, *offset, (size_t)count, NULL, &sbytes, 0);
+    if (r != 0) return -1;
+    return (ssize_t)sbytes;
+}
+
 # endif
 
 #endif