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Diffstat (limited to 'extra/mariabackup/fil_cur.h')
| -rw-r--r-- | extra/mariabackup/fil_cur.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/extra/mariabackup/fil_cur.h b/extra/mariabackup/fil_cur.h new file mode 100644 index 00000000..0027b776 --- /dev/null +++ b/extra/mariabackup/fil_cur.h @@ -0,0 +1,127 @@ +/****************************************************** +XtraBackup: hot backup tool for InnoDB +(c) 2009-2013 Percona LLC and/or its affiliates. +Originally Created 3/3/2009 Yasufumi Kinoshita +Written by Alexey Kopytov, Aleksandr Kuzminsky, Stewart Smith, Vadim Tkachenko, +Yasufumi Kinoshita, Ignacio Nin and Baron Schwartz. + +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 + +*******************************************************/ + +/* Source file cursor interface */ + +#ifndef FIL_CUR_H +#define FIL_CUR_H + +#include <my_dir.h> +#include "read_filt.h" +#include "srv0start.h" +#include "srv0srv.h" +#include "xtrabackup.h" + +struct xb_fil_cur_t { + pfs_os_file_t file; /*!< source file handle */ + fil_node_t* node; /*!< source tablespace node */ + char rel_path[FN_REFLEN]; + /*!< normalized file path */ + char abs_path[FN_REFLEN]; + /*!< absolute file path */ + MY_STAT statinfo; /*!< information about the file */ + ulint zip_size; /*!< compressed page size in bytes or 0 + for uncompressed pages */ + ulint page_size; /*!< physical page size */ + xb_read_filt_t* read_filter; /*!< read filter */ + xb_read_filt_ctxt_t read_filter_ctxt; + /*!< read filter context */ + byte* buf; /*!< read buffer */ + size_t buf_size; /*!< buffer size in bytes */ + size_t buf_read; /*!< number of read bytes in buffer + after the last cursor read */ + size_t buf_npages; /*!< number of pages in buffer after the + last cursor read */ + ib_int64_t buf_offset; /*!< file offset of the first page in + buffer */ + unsigned buf_page_no; /*!< number of the first page in + buffer */ + uint thread_n; /*!< thread number for diagnostics */ + ulint space_id; /*!< ID of tablespace */ + ulint space_size; /*!< space size in pages */ + + /** @return whether this is not a file-per-table tablespace */ + bool is_system() const + { + ut_ad(space_id != SRV_TMP_SPACE_ID); + return(space_id == TRX_SYS_SPACE + || srv_is_undo_tablespace(space_id)); + } +}; + +typedef enum { + XB_FIL_CUR_SUCCESS, + XB_FIL_CUR_SKIP, + XB_FIL_CUR_ERROR, + XB_FIL_CUR_EOF +} xb_fil_cur_result_t; + +/************************************************************************ +Open a source file cursor and initialize the associated read filter. + +@return XB_FIL_CUR_SUCCESS on success, XB_FIL_CUR_SKIP if the source file must +be skipped and XB_FIL_CUR_ERROR on error. */ +xb_fil_cur_result_t +xb_fil_cur_open( +/*============*/ + xb_fil_cur_t* cursor, /*!< out: source file cursor */ + xb_read_filt_t* read_filter, /*!< in/out: the read filter */ + fil_node_t* node, /*!< in: source tablespace node */ + uint thread_n, /*!< thread number for diagnostics */ + ulonglong max_file_size = ULLONG_MAX); + +/** Reads and verifies the next block of pages from the source +file. Positions the cursor after the last read non-corrupted page. +@param[in,out] cursor source file cursor +@param[out] corrupted_pages adds corrupted pages if +opt_log_innodb_page_corruption is set +@return XB_FIL_CUR_SUCCESS if some have been read successfully, XB_FIL_CUR_EOF +if there are no more pages to read and XB_FIL_CUR_ERROR on error. */ +xb_fil_cur_result_t xb_fil_cur_read(xb_fil_cur_t *cursor, + CorruptedPages &corrupted_pages); +/************************************************************************ +Close the source file cursor opened with xb_fil_cur_open() and its +associated read filter. */ +void +xb_fil_cur_close( +/*=============*/ + xb_fil_cur_t *cursor); /*!< in/out: source file cursor */ + +/*********************************************************************** +Extracts the relative path ("database/table.ibd") of a tablespace from a +specified possibly absolute path. + +For user tablespaces both "./database/table.ibd" and +"/remote/dir/database/table.ibd" result in "database/table.ibd". + +For system tablepsaces (i.e. When is_system is TRUE) both "/remote/dir/ibdata1" +and "./ibdata1" yield "ibdata1" in the output. */ +const char * +xb_get_relative_path( +/*=================*/ + const char* path, /*!< in: tablespace path (either + relative or absolute) */ + ibool is_system); /*!< in: TRUE for system tablespaces, + i.e. when only the filename must be + returned. */ + +#endif |