zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/truncate64.c b/ap/build/uClibc/libc/sysdeps/linux/common/truncate64.c
new file mode 100644
index 0000000..1f6c459
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/truncate64.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+/* truncate64 syscall. Copes with 64 bit and 32 bit machines
+ * and on 32 bit machines this sends things into the kernel as
+ * two 32-bit arguments (high and low 32 bits of length) that
+ * are ordered based on endianess. It turns out endian.h has
+ * just the macro we need to order things, __LONG_LONG_PAIR.
+ */
+
+#include <features.h>
+#include <unistd.h>
+#include <errno.h>
+#include <endian.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+#if defined __UCLIBC_HAS_LFS__
+
+#if defined __NR_truncate64
+
+#if __WORDSIZE == 64
+
+/* For a 64 bit machine, life is simple... */
+_syscall2(int, truncate64, const char *, path, __off64_t, length)
+
+#elif __WORDSIZE == 32
+
+/* The exported truncate64 function. */
+int truncate64(const char * path, __off64_t length)
+{
+ uint32_t low = length & 0xffffffff;
+ uint32_t high = length >> 32;
+#if defined(__UCLIBC_TRUNCATE64_HAS_4_ARGS__)
+ return INLINE_SYSCALL(truncate64, 4, path, 0,
+ __LONG_LONG_PAIR(high, low));
+#else
+ return INLINE_SYSCALL(truncate64, 3, path,
+ __LONG_LONG_PAIR(high, low));
+#endif
+}
+
+#else /* __WORDSIZE */
+#error Your machine is not 64 bit nor 32 bit, I am dazed and confused.
+#endif /* __WORDSIZE */
+
+#else /* __NR_truncate64 */
+
+
+int truncate64(const char * path, __off64_t length)
+{
+ __off_t x = (__off_t) length;
+
+ if (x == length) {
+ return truncate(path, x);
+ }
+
+ __set_errno((x < 0) ? EINVAL : EFBIG);
+
+ return -1;
+}
+
+#endif /* __NR_truncate64 */
+
+#endif /* __UCLIBC_HAS_LFS__ */