release/src-rt-6.x.4708/linux/linux-2.6.36/fs/ext2/symlink.c

   1 /*
   2  *  linux/fs/ext2/symlink.c
   3  *
   4  * Only fast symlinks left here - the rest is done by generic code. AV, 1999
   5  *
   6  * Copyright (C) 1992, 1993, 1994, 1995
   7  * Remy Card (card@masi.ibp.fr)
   8  * Laboratoire MASI - Institut Blaise Pascal
   9  * Universite Pierre et Marie Curie (Paris VI)
  10  *
  11  *  from
  12  *
  13  *  linux/fs/minix/symlink.c
  14  *
  15  *  Copyright (C) 1991, 1992  Linus Torvalds
  16  *
  17  *  ext2 symlink handling code
  18  */
  19
  20 #include "ext2.h"
  21 #include "xattr.h"
  22 #include <linux/namei.h>
  23
  24 static void *ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
  25 {
  26         struct ext2_inode_info *ei = EXT2_I(dentry->d_inode);
  27         nd_set_link(nd, (char *)ei->i_data);
  28         return NULL;
  29 }
  30
  31 const struct inode_operations ext2_symlink_inode_operations = {
  32         .readlink       = generic_readlink,
  33         .follow_link    = page_follow_link_light,
  34         .put_link       = page_put_link,
  35         .setattr        = ext2_setattr,
  36 #ifdef CONFIG_EXT2_FS_XATTR
  37         .setxattr       = generic_setxattr,
  38         .getxattr       = generic_getxattr,
  39         .listxattr      = ext2_listxattr,
  40         .removexattr    = generic_removexattr,
  41 #endif
  42 };
  43
  44 const struct inode_operations ext2_fast_symlink_inode_operations = {
  45         .readlink       = generic_readlink,
  46         .follow_link    = ext2_follow_link,
  47         .setattr        = ext2_setattr,
  48 #ifdef CONFIG_EXT2_FS_XATTR
  49         .setxattr       = generic_setxattr,
  50         .getxattr       = generic_getxattr,
  51         .listxattr      = ext2_listxattr,
  52         .removexattr    = generic_removexattr,
  53 #endif
  54 };