Rewrite to use fstat64 syscall if available.

diff --git a/sysdeps/unix/sysv/linux/fxstat64.c b/sysdeps/unix/sysv/linux/fxstat64.c
index 5f13fbe35c5151c2e0ea6cb58aac12229758b828..c7672e9370447e0c94a429ee15a6a90c9dcba291 100644 (file)
--- a/sysdeps/unix/sysv/linux/fxstat64.c
+++ b/sysdeps/unix/sysv/linux/fxstat64.c
@@ -1,5 +1,5 @@
 /* fxstat64 using old-style Unix fstat system call.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 1999 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
@@ -29,6 +29,12 @@
 
 extern int __syscall_fstat (int, struct kernel_stat *);
 
+#ifdef __NR_fstat64
+extern int __syscall_fstat64 (int, struct stat64 *);
+/* The variable is shared between all wrappers around *stat64 calls.  */
+extern int __have_no_stat64;
+#endif
+
 /* Get information about the file FD in BUF.  */
 int
 __fxstat64 (int vers, int fd, struct stat64 *buf)
@@ -36,6 +42,20 @@ __fxstat64 (int vers, int fd, struct stat64 *buf)
   struct kernel_stat kbuf;
   int result;
 
+# if defined __NR_fstat64
+  if (! have_no_stat64)
+    {
+      int saved_errno = errno;
+      result = INLINE_SYSCALL (fstat64, 2, fd, buf);
+
+      if (result != -1 || errno != ENOSYS)
+       return result;
+
+      __set_errno (saved_errno);
+      have_no_stat64 = 1;
+    }
+#endif
+
   result = INLINE_SYSCALL (fstat, 2, fd, &kbuf);
   if (result == 0)
     result = xstat64_conv (vers, &kbuf, buf);