1 files changed, 39 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/xtensa/posix_fadvise64.c b/libc/sysdeps/linux/xtensa/posix_fadvise64.c
new file mode 100644
index 000000000..1fdeeba79
--- /dev/null
+++ b/libc/sysdeps/linux/xtensa/posix_fadvise64.c
@@ -0,0 +1,39 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * posix_fadvise64() for Xtensa uClibc
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ * Copyright (C) 2007 Tensilica Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <features.h>
+#include <unistd.h>
+#include <errno.h>
+#include <endian.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <fcntl.h>
+
+#ifdef __UCLIBC_HAS_LFS__
+
+int posix_fadvise64 (int fd, __off64_t offset, __off64_t len, int advice)
+{
+#ifdef __NR_fadvise64_64
+	INTERNAL_SYSCALL_DECL (err);
+	int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, advice,
+								__LONG_LONG_PAIR ((long) (offset >> 32),
+												  (long) offset),
+								__LONG_LONG_PAIR ((long) (len >> 32),
+												  (long) len));
+	if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+		return 0;
+	return INTERNAL_SYSCALL_ERRNO (ret, err);
+#else
+	return ENOSYS;
+#endif
+}
+
+#endif /* __UCLIBC_HAS_LFS__ */