76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*
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Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef NDB_FIND_FILES_LIST_H
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#define NDB_FIND_FILES_LIST_H
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#include <my_global.h>
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#include <mysql/mysql_lex_string.h>
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/**
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Ndb_find_files_list
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Utility class which encapsulates the find_files() function
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and its returned list of files.
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The find_files() function return a list consisting of
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pointers to file names, the file names themself are allocated
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in a specified MEM_ROOT. In order to avoid that the default
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MEM_ROOT of the caller is used, this class allocates a memory
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root which holds the file name pointers and the file name strings
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until the list goes out of scope.
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The find_files() function also has a special quirk in that
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it looks at the THD::col_access member variable to determine which
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files and directories the caller has permission to see. This class
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make sure that caller has full access to see all files by applying
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the proper values for THD::col_access(see inline comment below).
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*/
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class Ndb_find_files_list {
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class THD* const m_thd;
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struct Ndb_find_files_list_impl* m_impl;
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bool find_files_impl(const char *db,
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const char *path,
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bool dir);
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public:
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explicit Ndb_find_files_list(class THD* thd);
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~Ndb_find_files_list();
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bool find_databases(const char *path)
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{
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return find_files_impl(NULL, path, true);
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}
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bool find_tables(const char *db,
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const char *path)
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{
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return find_files_impl(db, path, false);
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}
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// Return the name of next found file
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MYSQL_LEX_STRING* next();
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// Return the number of found files
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uint found_files() const;
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};
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#endif
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