mirror of
https://github.com/MariaDB/server.git
synced 2025-11-04 04:46:15 +01:00
1c55b845e0
Added support to BACKUP STAGE to maria-backup
This is a port of the code from ES 10.6
See MDEV-5336 for backup stages description.
The following old options are not supported by the new code:
--rsync ; This is because rsync will not work on tables
that are in used.
--no-backup-locks ; This is disabled as mariadb-backup will always
use backup locks for better performance.
145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/******************************************************
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Copyright (c) 2011-2013 Percona LLC and/or its affiliates.
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Data sink interface.
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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 Street, Fifth Floor, Boston, MA 02110-1335 USA
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*******************************************************/
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#ifndef XB_DATASINK_H
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#define XB_DATASINK_H
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#include <my_global.h>
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#include <my_dir.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern char *xtrabackup_tmpdir;
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struct datasink_struct;
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typedef struct datasink_struct datasink_t;
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typedef struct ds_ctxt {
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datasink_t *datasink;
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char *root;
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void *ptr;
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struct ds_ctxt *pipe_ctxt;
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/*
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Copy file for backup/restore.
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@return true in case of success.
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*/
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bool copy_file(const char *src_file_path,
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const char *dst_file_path,
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uint thread_n,
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bool rewrite = false);
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bool move_file(const char *src_file_path,
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const char *dst_file_path,
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const char *dst_dir,
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uint thread_n);
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bool make_hardlink(const char *from_path, const char *to_path);
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void copy_or_move_dir(const char *from, const char *to,
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bool do_copy, bool allow_hardlinks);
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bool backup_file_vprintf(const char *filename,
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const char *fmt, va_list ap);
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bool backup_file_print_buf(const char *filename,
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const char *buf,
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int buf_len);
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bool backup_file_printf(const char *filename,
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const char *fmt, ...)
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ATTRIBUTE_FORMAT(printf, 2, 0);
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} ds_ctxt_t;
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typedef struct {
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void *ptr;
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char *path;
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datasink_t *datasink;
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} ds_file_t;
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struct datasink_struct {
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ds_ctxt_t *(*init)(const char *root);
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ds_file_t *(*open)(ds_ctxt_t *ctxt, const char *path,
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const MY_STAT *stat, bool rewrite);
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int (*write)(ds_file_t *file, const unsigned char *buf, size_t len);
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int (*seek_set)(ds_file_t *file, my_off_t offset);
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int (*close)(ds_file_t *file);
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int (*remove)(const char *path);
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// TODO: consider to return bool from "rename" and "remove"
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int (*rename)(ds_ctxt_t *ctxt, const char *old_path, const char *new_path);
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int (*mremove)(ds_ctxt_t *ctxt, const char *path);
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void (*deinit)(ds_ctxt_t *ctxt);
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};
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static inline int dummy_remove(const char *) {
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return 0;
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}
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/* Supported datasink types */
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typedef enum {
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DS_TYPE_STDOUT,
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DS_TYPE_LOCAL,
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DS_TYPE_XBSTREAM,
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DS_TYPE_COMPRESS,
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DS_TYPE_ENCRYPT,
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DS_TYPE_DECRYPT,
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DS_TYPE_TMPFILE,
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DS_TYPE_BUFFER
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} ds_type_t;
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/************************************************************************
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Create a datasink of the specified type */
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ds_ctxt_t *ds_create(const char *root, ds_type_t type);
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/************************************************************************
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Open a datasink file */
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ds_file_t *ds_open(
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ds_ctxt_t *ctxt, const char *path, const MY_STAT *stat, bool rewrite = false);
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/************************************************************************
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Write to a datasink file.
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@return 0 on success, 1 on error. */
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int ds_write(ds_file_t *file, const void *buf, size_t len);
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int ds_seek_set(ds_file_t *file, my_off_t offset);
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int ds_rename(ds_ctxt_t *ctxt, const char *old_path, const char *new_path);
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int ds_remove(ds_ctxt_t *ctxt, const char *path);
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/************************************************************************
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Close a datasink file.
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@return 0 on success, 1, on error. */
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int ds_close(ds_file_t *file);
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/************************************************************************
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Destroy a datasink handle */
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void ds_destroy(ds_ctxt_t *ctxt);
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/************************************************************************
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Set the destination pipe for a datasink (only makes sense for compress and
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tmpfile). */
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void ds_set_pipe(ds_ctxt_t *ctxt, ds_ctxt_t *pipe_ctxt);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* XB_DATASINK_H */
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