mirror of
https://github.com/MariaDB/server.git
synced 2025-01-15 19:42:28 +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
/******************************************************
|
|
Copyright (c) 2011-2013 Percona LLC and/or its affiliates.
|
|
|
|
Data sink interface.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
|
|
|
|
*******************************************************/
|
|
|
|
#ifndef XB_DATASINK_H
|
|
#define XB_DATASINK_H
|
|
|
|
#include <my_global.h>
|
|
#include <my_dir.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
extern char *xtrabackup_tmpdir;
|
|
struct datasink_struct;
|
|
typedef struct datasink_struct datasink_t;
|
|
|
|
typedef struct ds_ctxt {
|
|
datasink_t *datasink;
|
|
char *root;
|
|
void *ptr;
|
|
struct ds_ctxt *pipe_ctxt;
|
|
/*
|
|
Copy file for backup/restore.
|
|
@return true in case of success.
|
|
*/
|
|
bool copy_file(const char *src_file_path,
|
|
const char *dst_file_path,
|
|
uint thread_n,
|
|
bool rewrite = false);
|
|
|
|
bool move_file(const char *src_file_path,
|
|
const char *dst_file_path,
|
|
const char *dst_dir,
|
|
uint thread_n);
|
|
|
|
bool make_hardlink(const char *from_path, const char *to_path);
|
|
|
|
void copy_or_move_dir(const char *from, const char *to,
|
|
bool do_copy, bool allow_hardlinks);
|
|
|
|
bool backup_file_vprintf(const char *filename,
|
|
const char *fmt, va_list ap);
|
|
|
|
bool backup_file_print_buf(const char *filename,
|
|
const char *buf,
|
|
int buf_len);
|
|
|
|
bool backup_file_printf(const char *filename,
|
|
const char *fmt, ...)
|
|
ATTRIBUTE_FORMAT(printf, 2, 0);
|
|
|
|
} ds_ctxt_t;
|
|
|
|
typedef struct {
|
|
void *ptr;
|
|
char *path;
|
|
datasink_t *datasink;
|
|
} ds_file_t;
|
|
|
|
struct datasink_struct {
|
|
ds_ctxt_t *(*init)(const char *root);
|
|
ds_file_t *(*open)(ds_ctxt_t *ctxt, const char *path,
|
|
const MY_STAT *stat, bool rewrite);
|
|
int (*write)(ds_file_t *file, const unsigned char *buf, size_t len);
|
|
int (*seek_set)(ds_file_t *file, my_off_t offset);
|
|
int (*close)(ds_file_t *file);
|
|
int (*remove)(const char *path);
|
|
// TODO: consider to return bool from "rename" and "remove"
|
|
int (*rename)(ds_ctxt_t *ctxt, const char *old_path, const char *new_path);
|
|
int (*mremove)(ds_ctxt_t *ctxt, const char *path);
|
|
void (*deinit)(ds_ctxt_t *ctxt);
|
|
};
|
|
|
|
|
|
static inline int dummy_remove(const char *) {
|
|
return 0;
|
|
}
|
|
|
|
/* Supported datasink types */
|
|
typedef enum {
|
|
DS_TYPE_STDOUT,
|
|
DS_TYPE_LOCAL,
|
|
DS_TYPE_XBSTREAM,
|
|
DS_TYPE_COMPRESS,
|
|
DS_TYPE_ENCRYPT,
|
|
DS_TYPE_DECRYPT,
|
|
DS_TYPE_TMPFILE,
|
|
DS_TYPE_BUFFER
|
|
} ds_type_t;
|
|
|
|
/************************************************************************
|
|
Create a datasink of the specified type */
|
|
ds_ctxt_t *ds_create(const char *root, ds_type_t type);
|
|
|
|
/************************************************************************
|
|
Open a datasink file */
|
|
ds_file_t *ds_open(
|
|
ds_ctxt_t *ctxt, const char *path, const MY_STAT *stat, bool rewrite = false);
|
|
|
|
/************************************************************************
|
|
Write to a datasink file.
|
|
@return 0 on success, 1 on error. */
|
|
int ds_write(ds_file_t *file, const void *buf, size_t len);
|
|
int ds_seek_set(ds_file_t *file, my_off_t offset);
|
|
|
|
int ds_rename(ds_ctxt_t *ctxt, const char *old_path, const char *new_path);
|
|
int ds_remove(ds_ctxt_t *ctxt, const char *path);
|
|
|
|
/************************************************************************
|
|
Close a datasink file.
|
|
@return 0 on success, 1, on error. */
|
|
int ds_close(ds_file_t *file);
|
|
|
|
/************************************************************************
|
|
Destroy a datasink handle */
|
|
void ds_destroy(ds_ctxt_t *ctxt);
|
|
|
|
/************************************************************************
|
|
Set the destination pipe for a datasink (only makes sense for compress and
|
|
tmpfile). */
|
|
void ds_set_pipe(ds_ctxt_t *ctxt, ds_ctxt_t *pipe_ctxt);
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* XB_DATASINK_H */
|