fs/ext3/symlink.c

   1 /*
   2  *  linux/fs/ext3/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  *  ext3 symlink handling code
  18  */
  19
  20 #include <linux/fs.h>
  21 #include <linux/jbd.h>
  22 #include <linux/ext3_fs.h>
  23 #include "xattr.h"
  24
  25 static int
  26 ext3_readlink(struct dentry *dentry, char __user *buffer, int buflen)
  27 {
  28         struct ext3_inode_info *ei = EXT3_I(dentry->d_inode);
  29         return vfs_readlink(dentry, buffer, buflen, (char*)ei->i_data);
  30 }
  31
  32 static int ext3_follow_link(struct dentry *dentry, struct nameidata *nd)
  33 {
  34         struct ext3_inode_info *ei = EXT3_I(dentry->d_inode);
  35         return vfs_follow_link(nd, (char*)ei->i_data);
  36 }
  37
  38 struct inode_operations ext3_symlink_inode_operations = {
  39         .readlink       = page_readlink,
  40         .follow_link    = page_follow_link,
  41         .setxattr       = ext3_setxattr,
  42         .getxattr       = ext3_getxattr,
  43         .listxattr      = ext3_listxattr,
  44         .removexattr    = ext3_removexattr,
  45 };
  46
  47 struct inode_operations ext3_fast_symlink_inode_operations = {
  48         .readlink       = ext3_readlink,        /* BKL not held.  Don't need */
  49         .follow_link    = ext3_follow_link,     /* BKL not held.  Don't need */
  50         .setxattr       = ext3_setxattr,
  51         .getxattr       = ext3_getxattr,
  52         .listxattr      = ext3_listxattr,
  53         .removexattr    = ext3_removexattr,
  54 };