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Diffstat (limited to 'extra/mariabackup/datasink.h')
| -rw-r--r-- | extra/mariabackup/datasink.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/extra/mariabackup/datasink.h b/extra/mariabackup/datasink.h new file mode 100644 index 00000000..57468e0c --- /dev/null +++ b/extra/mariabackup/datasink.h @@ -0,0 +1,134 @@ +/****************************************************** +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 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, MY_STAT *stat); + int (*write)(ds_file_t *file, const unsigned char *buf, size_t len); + int (*close)(ds_file_t *file); + int (*remove)(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, MY_STAT *stat); + +/************************************************************************ +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); + +/************************************************************************ +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 */ |