LXR linux/fs/ext4/symlink.c

   1/*
   2 *  linux/fs/ext4/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 *  ext4 symlink handling code
  18 */
  19
  20#include <linux/fs.h>
  21#include <linux/jbd2.h>
  22#include <linux/ext4_fs.h>
  23#include <linux/namei.h>
  24#include "xattr.h"
  25
  26static void * ext4_follow_link(struct dentry *dentry, struct nameidata *nd)
  27{
  28        struct ext4_inode_info *ei = EXT4_I(dentry->d_inode);
  29        nd_set_link(nd, (char*)ei->i_data);
  30        return NULL;
  31}
  32
  33const struct inode_operations ext4_symlink_inode_operations = {
  34        .readlink       = generic_readlink,
  35        .follow_link    = page_follow_link_light,
  36        .put_link       = page_put_link,
  37#ifdef CONFIG_EXT4DEV_FS_XATTR
  38        .setxattr       = generic_setxattr,
  39        .getxattr       = generic_getxattr,
  40        .listxattr      = ext4_listxattr,
  41        .removexattr    = generic_removexattr,
  42#endif
  43};
  44
  45const struct inode_operations ext4_fast_symlink_inode_operations = {
  46        .readlink       = generic_readlink,
  47        .follow_link    = ext4_follow_link,
  48#ifdef CONFIG_EXT4DEV_FS_XATTR
  49        .setxattr       = generic_setxattr,
  50        .getxattr       = generic_getxattr,
  51        .listxattr      = ext4_listxattr,
  52        .removexattr    = generic_removexattr,
  53#endif
  54};
  55