fs/stack.c

   1 /*
   2  * Copyright (c) 2006-2007 Erez Zadok
   3  * Copyright (c) 2006-2007 Josef 'Jeff' Sipek
   4  * Copyright (c) 2006-2007 Stony Brook University
   5  * Copyright (c) 2006-2007 The Research Foundation of SUNY
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/fs.h>
  14 #include <linux/fs_stack.h>
  15
  16 /*
  17  * does _NOT_ require i_mutex to be held.
  18  *
  19  * This function cannot be inlined since i_size_{read,write} is rather
  20  * heavy-weight on 32-bit systems
  21  */
  22 void fsstack_copy_inode_size(struct inode *dst, const struct inode *src)
  23 {
  24         i_size_write(dst, i_size_read((struct inode *)src));
  25         dst->i_blocks = src->i_blocks;
  26 }
  27 EXPORT_SYMBOL_GPL(fsstack_copy_inode_size);
  28
  29 /*
  30  * copy all attributes; get_nlinks is optional way to override the i_nlink
  31  * copying
  32  */
  33 void fsstack_copy_attr_all(struct inode *dest, const struct inode *src)
  34 {
  35         dest->i_mode = src->i_mode;
  36         dest->i_uid = src->i_uid;
  37         dest->i_gid = src->i_gid;
  38         dest->i_rdev = src->i_rdev;
  39         dest->i_atime = src->i_atime;
  40         dest->i_mtime = src->i_mtime;
  41         dest->i_ctime = src->i_ctime;
  42         dest->i_blkbits = src->i_blkbits;
  43         dest->i_flags = src->i_flags;
  44         dest->i_nlink = src->i_nlink;
  45 }
  46 EXPORT_SYMBOL_GPL(fsstack_copy_attr_all);