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-rw-r--r--sysdeps/mach/hurd/xstatconv.c72
1 files changed, 46 insertions, 26 deletions
diff --git a/sysdeps/mach/hurd/xstatconv.c b/sysdeps/mach/hurd/xstatconv.c
index 3a5fbe73d1..e28643cd59 100644
--- a/sysdeps/mach/hurd/xstatconv.c
+++ b/sysdeps/mach/hurd/xstatconv.c
@@ -1,5 +1,5 @@
 /* Convert between `struct stat' format, and `struct stat64' format.
-   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 2000,01,02 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
@@ -17,32 +17,52 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#include <string.h>
+#include <errno.h>
 #include <sys/stat.h>
 
-static inline void
-xstat64_conv (struct stat *buf, struct stat64 *buf64)
+static inline int
+xstat64_conv (struct stat *buf, const struct stat64 *buf64)
 {
-  memset (buf64, 0, sizeof (struct stat64));
-
-  buf64->st_fstype = buf->st_fstype;
-  buf64->st_fsid = buf->st_fsid;
-  buf64->st_ino = buf->st_ino;
-  buf64->st_gen = buf->st_gen;
-  buf64->st_rdev = buf->st_rdev;
-  buf64->st_mode = buf->st_mode;
-  buf64->st_nlink = buf->st_nlink;
-  buf64->st_uid = buf->st_uid;
-  buf64->st_gid = buf->st_gid;
-  buf64->st_size = buf->st_size;
-  buf64->st_atime = buf->st_atime;
-  buf64->st_atime_usec = buf->st_atime_usec;
-  buf64->st_mtime = buf->st_mtime;
-  buf64->st_mtime_usec = buf->st_mtime_usec;
-  buf64->st_ctime = buf->st_ctime;
-  buf64->st_ctime_usec = buf->st_ctime_usec;
-  buf64->st_blksize = buf->st_blksize;
-  buf64->st_blocks = buf->st_blocks;
-  buf64->st_author = buf->st_author;
-  buf64->st_flags = buf->st_flags;
+  if (sizeof *buf == sizeof *buf64
+      && sizeof buf->st_ino == sizeof buf64->st_ino
+      && sizeof buf->st_size == sizeof buf64->st_size
+      && sizeof buf->st_blocks == sizeof buf64->st_blocks)
+    {
+      *buf = *(struct stat *) buf64;
+      return 0;
+    }
+
+  buf->st_fstype = buf64->st_fstype;
+  buf->st_fsid = buf64->st_fsid;
+  buf->st_ino = buf64->st_ino;
+  buf->st_gen = buf64->st_gen;
+  buf->st_rdev = buf64->st_rdev;
+  buf->st_mode = buf64->st_mode;
+  buf->st_nlink = buf64->st_nlink;
+  buf->st_uid = buf64->st_uid;
+  buf->st_gid = buf64->st_gid;
+  buf->st_size = buf64->st_size;
+  buf->st_atime = buf64->st_atime;
+  buf->st_atime_usec = buf64->st_atime_usec;
+  buf->st_mtime = buf64->st_mtime;
+  buf->st_mtime_usec = buf64->st_mtime_usec;
+  buf->st_ctime = buf64->st_ctime;
+  buf->st_ctime_usec = buf64->st_ctime_usec;
+  buf->st_blksize = buf64->st_blksize;
+  buf->st_blocks = buf64->st_blocks;
+  buf->st_author = buf64->st_author;
+  buf->st_flags = buf64->st_flags;
+
+  if ((sizeof buf->st_ino != sizeof buf64->st_ino
+       && buf->st_ino != buf64->st_ino)
+      || (sizeof buf->st_size != sizeof buf64->st_size
+	  && buf->st_size != buf64->st_size)
+      || (sizeof buf->st_blocks != sizeof buf64->st_blocks
+	  && buf->st_blocks != buf64->st_blocks))
+    {
+      __set_errno (EOVERFLOW);
+      return -1;
+    }
+
+  return 0;
 }