1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/readahead.c b/sysdeps/unix/sysv/linux/readahead.c
new file mode 100644
index 0000000000..33ea7315d5
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/readahead.c
@@ -0,0 +1,51 @@
+/* Provide kernel hint to read ahead.
+   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 <errno.h>
+#include <sys/types.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+
+
+#ifdef __NR_readahead
+
+extern int __syscall_readahead (int fd, off_t offset_hi, off_t offset_lo,
+				size_t count);
+
+
+ssize_t
+__readahead (int fd, loff_t offset, size_t count)
+{
+  return INLINE_SYSCALL (readahead, 4, fd, (off_t) (offset >> 32),
+			 (off_t) (offset & 0xffffffff), count);
+}
+#else
+ssize_t
+__readahead (int fd, loff_t offset, size_t count)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (readahead)
+
+# include <stub-tag.h>
+#endif
+
+weak_alias (__readahead, readahead)