about summary refs log tree commit diff
path: root/sysdeps/mach/hurd/sendfile64.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/mach/hurd/sendfile64.c')
-rw-r--r--sysdeps/mach/hurd/sendfile64.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/sendfile64.c b/sysdeps/mach/hurd/sendfile64.c
new file mode 100644
index 0000000000..40ce271efb
--- /dev/null
+++ b/sysdeps/mach/hurd/sendfile64.c
@@ -0,0 +1,43 @@
+/* sendfile -- copy data directly from one file descriptor to another
+   Copyright (C) 2002 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sys/sendfile.h>
+#include <errno.h>
+#include <stddef.h>
+
+/* Send COUNT bytes from file associated with IN_FD starting at OFFSET to
+   descriptor OUT_FD.  */
+ssize_t
+sendfile64 (int out_fd, int in_fd, off64_t *offset, size_t count)
+{
+  if (offset == NULL)
+    return sendfile (out_fd, in_fd, NULL, count);
+  else
+    {
+      off_t ofs = *offset;
+      if (ofs != *offset)
+	{
+	  __set_errno (EOVERFLOW);
+	  return -1;
+	}
+      ssize_t ret = sendfile (out_fd, in_fd, &ofs, count);
+      *offset = ofs;
+      return ret;
+    }
+}