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src/subversion/subversion/libsvn_fs_fs/tree.c  view on Meta::CPAN

  SVN_ERR(get_root(&source, source_root, pool));

  /* Open a txn for the txn root into which we're merging. */
  SVN_ERR(svn_fs_fs__open_txn(&txn, ancestor_root->fs, target_root->txn,
                              pool));

  /* Merge changes between ANCESTOR and SOURCE into TXN. */
  err = merge_changes(ancestor, source, txn, conflict, pool);
  if (err)
    {
      if ((err->apr_err == SVN_ERR_FS_CONFLICT) && conflict_p)
        *conflict_p = conflict->data;
      return svn_error_trace(err);
    }

  return SVN_NO_ERROR;
}

svn_error_t *
svn_fs_fs__deltify(svn_fs_t *fs,
                   svn_revnum_t revision,
                   apr_pool_t *pool)
{
  /* Deltify is a no-op for fs_fs. */

  return SVN_NO_ERROR;
}



/* Directories.  */

/* Set *TABLE_P to a newly allocated APR hash table containing the
   entries of the directory at PATH in ROOT.  The keys of the table
   are entry names, as byte strings, excluding the final null
   character; the table's values are pointers to svn_fs_dirent_t
   structures.  Allocate the table and its contents in POOL. */
static svn_error_t *
fs_dir_entries(apr_hash_t **table_p,
               svn_fs_root_t *root,
               const char *path,
               apr_pool_t *pool)
{
  dag_node_t *node;

  /* Get the entries for this path in the caller's pool. */
  SVN_ERR(get_dag(&node, root, path, FALSE, pool));
  return svn_fs_fs__dag_dir_entries(table_p, node, pool);
}

/* Raise an error if PATH contains a newline because FSFS cannot handle
 * such paths. See issue #4340. */
static svn_error_t *
check_newline(const char *path, apr_pool_t *pool)
{
  char *c = strchr(path, '\n');

  if (c)
    return svn_error_createf(SVN_ERR_FS_PATH_SYNTAX, NULL,
       _("Invalid control character '0x%02x' in path '%s'"),
       (unsigned char)*c, svn_path_illegal_path_escape(path, pool));

  return SVN_NO_ERROR;
}

/* Create a new directory named PATH in ROOT.  The new directory has
   no entries, and no properties.  ROOT must be the root of a
   transaction, not a revision.  Do any necessary temporary allocation
   in POOL.  */
static svn_error_t *
fs_make_dir(svn_fs_root_t *root,
            const char *path,
            apr_pool_t *pool)
{
  parent_path_t *parent_path;
  dag_node_t *sub_dir;
  const char *txn_id = root->txn;

  SVN_ERR(check_newline(path, pool));

  path = svn_fs__canonicalize_abspath(path, pool);
  SVN_ERR(open_path(&parent_path, root, path, open_path_last_optional,
                    txn_id, pool));

  /* Check (recursively) to see if some lock is 'reserving' a path at
     that location, or even some child-path; if so, check that we can
     use it. */
  if (root->txn_flags & SVN_FS_TXN_CHECK_LOCKS)
    SVN_ERR(svn_fs_fs__allow_locked_operation(path, root->fs, TRUE, FALSE,
                                              pool));

  /* If there's already a sub-directory by that name, complain.  This
     also catches the case of trying to make a subdirectory named `/'.  */
  if (parent_path->node)
    return SVN_FS__ALREADY_EXISTS(root, path);

  /* Create the subdirectory.  */
  SVN_ERR(make_path_mutable(root, parent_path->parent, path, pool));
  SVN_ERR(svn_fs_fs__dag_make_dir(&sub_dir,
                                  parent_path->parent->node,
                                  parent_path_path(parent_path->parent,
                                                   pool),
                                  parent_path->entry,
                                  txn_id,
                                  pool));

  /* Add this directory to the path cache. */
  SVN_ERR(dag_node_cache_set(root, parent_path_path(parent_path, pool),
                             sub_dir, pool));

  /* Make a record of this modification in the changes table. */
  return add_change(root->fs, txn_id, path, svn_fs_fs__dag_get_id(sub_dir),
                    svn_fs_path_change_add, FALSE, FALSE, svn_node_dir,
                    SVN_INVALID_REVNUM, NULL, pool);
}


/* Delete the node at PATH under ROOT.  ROOT must be a transaction
   root.  Perform temporary allocations in POOL. */
static svn_error_t *
fs_delete_node(svn_fs_root_t *root,