mirror of
https://github.com/postgrespro/pg_probackup.git
synced 2024-11-28 09:33:54 +02:00
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* init.c: manage backup catalog.
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*
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* Portions Copyright (c) 2009-2011, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
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* Portions Copyright (c) 2015-2017, Postgres Professional
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*
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*-------------------------------------------------------------------------
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*/
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#include "pg_probackup.h"
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#include <unistd.h>
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#include <dirent.h>
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/*
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* selects function for scandir.
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* Select all files except hidden.
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*/
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static int selects(const struct dirent *dir)
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{
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return dir->d_name[0] != '.';
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}
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/*
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* Initialize backup catalog.
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*/
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int
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do_init(void)
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{
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char path[MAXPGPATH];
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char arclog_path_dir[MAXPGPATH];
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FILE *fp;
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uint64 id;
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struct dirent **dp;
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int results;
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/* PGDATA is always required */
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if (pgdata == NULL)
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elog(ERROR, "Required parameter not specified: PGDATA "
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"(-D, --pgdata)");
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if (access(backup_path, F_OK) == 0)
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{
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results = scandir(backup_path, &dp, selects, NULL);
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if (results != 0)
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elog(ERROR, "backup catalog already exist and it's not empty");
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}
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/* Read system_identifier from PGDATA */
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id = get_system_identifier();
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/* create backup catalog root directory */
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dir_create_dir(backup_path, DIR_PERMISSION);
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/* create directories for backup of online files */
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join_path_components(path, backup_path, BACKUPS_DIR);
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dir_create_dir(path, DIR_PERMISSION);
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/* Create "wal" directory */
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join_path_components(arclog_path_dir, backup_path, "wal");
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dir_create_dir(arclog_path_dir, DIR_PERMISSION);
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/* create BACKUP_CATALOG_CONF_FILE */
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join_path_components(path, backup_path, BACKUP_CATALOG_CONF_FILE);
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fp = fopen(path, "wt");
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if (fp == NULL)
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elog(ERROR, "cannot create %s: %s",
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BACKUP_CATALOG_CONF_FILE, strerror(errno));
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fprintf(fp, "system-identifier = %li\n", id);
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fprintf(fp, "\n");
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fclose(fp);
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return 0;
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}
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