mirror of
https://git.postgresql.org/git/postgresql.git
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a88f4496b7
client connections during the upgrade. Also rename data/bin/port environment variables to being with 'PG'. Also no longer honor PGPORT.
401 lines
10 KiB
C
401 lines
10 KiB
C
/*
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* pg_upgrade.h
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*
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* Copyright (c) 2010-2011, PostgreSQL Global Development Group
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* contrib/pg_upgrade/pg_upgrade.h
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*/
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#include "postgres.h"
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#include <unistd.h>
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#include <assert.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include "libpq-fe.h"
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/* Use port in the private/dynamic port number range */
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#define DEF_PGUPORT 50432
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/* Allocate for null byte */
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#define USER_NAME_SIZE 128
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#define MAX_STRING 1024
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#define LINE_ALLOC 4096
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#define QUERY_ALLOC 8192
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#define MIGRATOR_API_VERSION 1
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#define MESSAGE_WIDTH "60"
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#define OVERWRITE_MESSAGE " %-" MESSAGE_WIDTH "." MESSAGE_WIDTH "s\r"
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#define GET_MAJOR_VERSION(v) ((v) / 100)
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#define ALL_DUMP_FILE "pg_upgrade_dump_all.sql"
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/* contains both global db information and CREATE DATABASE commands */
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#define GLOBALS_DUMP_FILE "pg_upgrade_dump_globals.sql"
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#define DB_DUMP_FILE "pg_upgrade_dump_db.sql"
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#ifndef WIN32
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#define pg_copy_file copy_file
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#define pg_mv_file rename
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#define pg_link_file link
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#define RM_CMD "rm -f"
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#define RMDIR_CMD "rm -rf"
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#define SCRIPT_EXT "sh"
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#else
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#define pg_copy_file CopyFile
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#define pg_mv_file pgrename
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#define pg_link_file win32_pghardlink
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#define sleep(x) Sleep(x * 1000)
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#define RM_CMD "DEL /q"
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#define RMDIR_CMD "RMDIR /s/q"
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#define SCRIPT_EXT "bat"
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#define EXE_EXT ".exe"
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#endif
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#define CLUSTER_NAME(cluster) ((cluster) == &old_cluster ? "old" : \
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(cluster) == &new_cluster ? "new" : "none")
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#define atooid(x) ((Oid) strtoul((x), NULL, 10))
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/* OID system catalog preservation added during PG 9.0 development */
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#define TABLE_SPACE_SUBDIRS_CAT_VER 201001111
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/* postmaster/postgres -b (binary_upgrade) flag added during PG 9.1 development */
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#define BINARY_UPGRADE_SERVER_FLAG_CAT_VER 201104251
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/*
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* Each relation is represented by a relinfo structure.
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*/
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typedef struct
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{
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char nspname[NAMEDATALEN]; /* namespace name */
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char relname[NAMEDATALEN]; /* relation name */
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Oid reloid; /* relation oid */
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Oid relfilenode; /* relation relfile node */
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char tablespace[MAXPGPATH]; /* relations tablespace path */
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} RelInfo;
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typedef struct
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{
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RelInfo *rels;
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int nrels;
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} RelInfoArr;
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/*
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* The following structure represents a relation mapping.
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*/
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typedef struct
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{
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char old_dir[MAXPGPATH];
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char new_dir[MAXPGPATH];
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/*
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* old/new relfilenodes might differ for pg_largeobject(_metadata) indexes
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* due to VACUUM FULL or REINDEX. Other relfilenodes are preserved.
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*/
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Oid old_relfilenode;
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Oid new_relfilenode;
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/* the rest are used only for logging and error reporting */
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char nspname[NAMEDATALEN]; /* namespaces */
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char relname[NAMEDATALEN];
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} FileNameMap;
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/*
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* Structure to store database information
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*/
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typedef struct
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{
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Oid db_oid; /* oid of the database */
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char db_name[NAMEDATALEN]; /* database name */
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char db_tblspace[MAXPGPATH]; /* database default tablespace path */
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RelInfoArr rel_arr; /* array of all user relinfos */
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} DbInfo;
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typedef struct
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{
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DbInfo *dbs; /* array of db infos */
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int ndbs; /* number of db infos */
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} DbInfoArr;
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/*
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* The following structure is used to hold pg_control information.
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* Rather than using the backend's control structure we use our own
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* structure to avoid pg_control version issues between releases.
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*/
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typedef struct
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{
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uint32 ctrl_ver;
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uint32 cat_ver;
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uint32 logid;
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uint32 nxtlogseg;
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uint32 chkpnt_tli;
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uint32 chkpnt_nxtxid;
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uint32 chkpnt_nxtoid;
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uint32 align;
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uint32 blocksz;
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uint32 largesz;
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uint32 walsz;
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uint32 walseg;
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uint32 ident;
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uint32 index;
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uint32 toast;
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bool date_is_int;
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bool float8_pass_by_value;
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char *lc_collate;
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char *lc_ctype;
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char *encoding;
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} ControlData;
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/*
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* Enumeration to denote link modes
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*/
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typedef enum
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{
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TRANSFER_MODE_COPY,
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TRANSFER_MODE_LINK
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} transferMode;
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/*
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* Enumeration to denote pg_log modes
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*/
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typedef enum
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{
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PG_INFO,
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PG_REPORT,
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PG_WARNING,
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PG_FATAL,
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PG_DEBUG
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} eLogType;
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typedef long pgpid_t;
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/*
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* cluster
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*
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* information about each cluster
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*/
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typedef struct
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{
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ControlData controldata; /* pg_control information */
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DbInfoArr dbarr; /* dbinfos array */
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char *pgdata; /* pathname for cluster's $PGDATA directory */
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char *bindir; /* pathname for cluster's executable directory */
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unsigned short port; /* port number where postmaster is waiting */
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uint32 major_version; /* PG_VERSION of cluster */
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char major_version_str[64]; /* string PG_VERSION of cluster */
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uint32 bin_version; /* version returned from pg_ctl */
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Oid pg_database_oid; /* OID of pg_database relation */
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char *tablespace_suffix; /* directory specification */
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} ClusterInfo;
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/*
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* LogOpts
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*/
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typedef struct
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{
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char *filename; /* name of log file (may be /dev/null) */
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FILE *fd; /* log FILE */
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bool debug; /* TRUE -> log more information */
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FILE *debug_fd; /* debug-level log FILE */
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bool verbose; /* TRUE -> be verbose in messages */
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} LogOpts;
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/*
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* UserOpts
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*/
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typedef struct
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{
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bool check; /* TRUE -> ask user for permission to make
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* changes */
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transferMode transfer_mode; /* copy files or link them? */
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} UserOpts;
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/*
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* OSInfo
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*/
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typedef struct
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{
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const char *progname; /* complete pathname for this program */
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char *exec_path; /* full path to my executable */
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char *user; /* username for clusters */
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char cwd[MAXPGPATH]; /* current working directory, used for output */
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char **tablespaces; /* tablespaces */
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int num_tablespaces;
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char **libraries; /* loadable libraries */
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int num_libraries;
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ClusterInfo *running_cluster;
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} OSInfo;
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/*
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* Global variables
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*/
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extern LogOpts log_opts;
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extern UserOpts user_opts;
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extern ClusterInfo old_cluster,
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new_cluster;
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extern OSInfo os_info;
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extern char scandir_file_pattern[];
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/* check.c */
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void output_check_banner(bool *live_check);
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void check_old_cluster(bool live_check,
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char **sequence_script_file_name);
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void check_new_cluster(void);
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void report_clusters_compatible(void);
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void issue_warnings(char *sequence_script_file_name);
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void output_completion_banner(char *deletion_script_file_name);
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void check_cluster_versions(void);
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void check_cluster_compatibility(bool live_check);
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void create_script_for_old_cluster_deletion(char **deletion_script_file_name);
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/* controldata.c */
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void get_control_data(ClusterInfo *cluster, bool live_check);
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void check_control_data(ControlData *oldctrl,
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ControlData *newctrl);
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/* dump.c */
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void generate_old_dump(void);
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void split_old_dump(void);
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/* exec.c */
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int exec_prog(bool throw_error,
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const char *cmd,...);
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void verify_directories(void);
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bool is_server_running(const char *datadir);
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void rename_old_pg_control(void);
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/* file.c */
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#ifdef PAGE_CONVERSION
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typedef const char *(*pluginStartup) (uint16 migratorVersion,
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uint16 *pluginVersion, uint16 newPageVersion,
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uint16 oldPageVersion, void **pluginData);
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typedef const char *(*pluginConvertFile) (void *pluginData,
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const char *dstName, const char *srcName);
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typedef const char *(*pluginConvertPage) (void *pluginData,
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const char *dstPage, const char *srcPage);
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typedef const char *(*pluginShutdown) (void *pluginData);
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typedef struct
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{
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uint16 oldPageVersion; /* Page layout version of the old cluster */
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uint16 newPageVersion; /* Page layout version of the new cluster */
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uint16 pluginVersion; /* API version of converter plugin */
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void *pluginData; /* Plugin data (set by plugin) */
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pluginStartup startup; /* Pointer to plugin's startup function */
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pluginConvertFile convertFile; /* Pointer to plugin's file converter
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* function */
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pluginConvertPage convertPage; /* Pointer to plugin's page converter
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* function */
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pluginShutdown shutdown; /* Pointer to plugin's shutdown function */
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} pageCnvCtx;
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const char *setupPageConverter(pageCnvCtx **result);
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#else
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/* dummy */
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typedef void *pageCnvCtx;
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#endif
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int dir_matching_filenames(const struct dirent * scan_ent);
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int pg_scandir(const char *dirname, struct dirent *** namelist,
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int (*selector) (const struct dirent *));
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const char *copyAndUpdateFile(pageCnvCtx *pageConverter, const char *src,
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const char *dst, bool force);
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const char *linkAndUpdateFile(pageCnvCtx *pageConverter, const char *src,
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const char *dst);
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void check_hard_link(void);
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/* function.c */
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void install_support_functions_in_new_db(const char *db_name);
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void uninstall_support_functions_from_new_cluster(void);
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void get_loadable_libraries(void);
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void check_loadable_libraries(void);
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/* info.c */
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FileNameMap *gen_db_file_maps(DbInfo *old_db,
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DbInfo *new_db, int *nmaps, const char *old_pgdata,
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const char *new_pgdata);
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void get_db_and_rel_infos(ClusterInfo *cluster);
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void free_db_and_rel_infos(DbInfoArr *db_arr);
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void print_maps(FileNameMap *maps, int n,
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const char *db_name);
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/* option.c */
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void parseCommandLine(int argc, char *argv[]);
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/* relfilenode.c */
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void get_pg_database_relfilenode(ClusterInfo *cluster);
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const char *transfer_all_new_dbs(DbInfoArr *olddb_arr,
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DbInfoArr *newdb_arr, char *old_pgdata, char *new_pgdata);
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/* tablespace.c */
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void init_tablespaces(void);
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/* server.c */
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PGconn *connectToServer(ClusterInfo *cluster, const char *db_name);
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PGresult *executeQueryOrDie(PGconn *conn, const char *fmt,...);
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void start_postmaster(ClusterInfo *cluster);
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void stop_postmaster(bool fast);
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uint32 get_major_server_version(ClusterInfo *cluster);
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void check_pghost_envvar(void);
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/* util.c */
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char *quote_identifier(const char *s);
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int get_user_info(char **user_name);
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void check_ok(void);
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void report_status(eLogType type, const char *fmt,...);
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void pg_log(eLogType type, char *fmt,...);
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void prep_status(const char *fmt,...);
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void check_ok(void);
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char *pg_strdup(const char *s);
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void *pg_malloc(int size);
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void pg_free(void *ptr);
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const char *getErrorText(int errNum);
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unsigned int str2uint(const char *str);
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void pg_putenv(const char *var, const char *val);
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/* version.c */
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void new_9_0_populate_pg_largeobject_metadata(ClusterInfo *cluster,
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bool check_mode);
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/* version_old_8_3.c */
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void old_8_3_check_for_name_data_type_usage(ClusterInfo *cluster);
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void old_8_3_check_for_tsquery_usage(ClusterInfo *cluster);
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void old_8_3_rebuild_tsvector_tables(ClusterInfo *cluster, bool check_mode);
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void old_8_3_invalidate_hash_gin_indexes(ClusterInfo *cluster, bool check_mode);
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void old_8_3_invalidate_bpchar_pattern_ops_indexes(ClusterInfo *cluster,
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bool check_mode);
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char *old_8_3_create_sequence_script(ClusterInfo *cluster);
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