fs/jffs2.org/symlink.c

   1 /*
   2  * JFFS2 -- Journalling Flash File System, Version 2.
   3  *
   4  * Copyright (C) 2001, 2002 Red Hat, Inc.
   5  *
   6  * Created by David Woodhouse <dwmw2@redhat.com>
   7  *
   8  * For licensing information, see the file 'LICENCE' in this directory.
   9  *
  10  * $Id: symlink.c,v 1.13 2004/07/13 08:59:04 dwmw2 Exp $
  11  *
  12  */
  13
  14
  15 #include <linux/kernel.h>
  16 #include <linux/slab.h>
  17 #include <linux/fs.h>
  18 #include <linux/namei.h>
  19 #include "nodelist.h"
  20
  21 static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
  22 static void jffs2_put_link(struct dentry *dentry, struct nameidata *nd);
  23
  24 struct inode_operations jffs2_symlink_inode_operations =
  25 {
  26         .readlink =     generic_readlink,
  27         .follow_link =  jffs2_follow_link,
  28         .put_link =     jffs2_put_link,
  29         .setattr =      jffs2_setattr
  30 };
  31
  32 static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
  33 {
  34         unsigned char *buf;
  35         buf = jffs2_getlink(JFFS2_SB_INFO(dentry->d_inode->i_sb), JFFS2_INODE_INFO(dentry->d_inode));
  36         nd_set_link(nd, buf);
  37         return 0;
  38 }
  39
  40 static void jffs2_put_link(struct dentry *dentry, struct nameidata *nd)
  41 {
  42         char *s = nd_get_link(nd);
  43         if (!IS_ERR(s))
  44                 kfree(s);
  45 }