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|
/*-------------------------------------------------------------------------
*
* pg_dump.h
* Common header file for the pg_dump utility
*
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/bin/pg_dump/pg_dump.h
*
*-------------------------------------------------------------------------
*/
#ifndef PG_DUMP_H
#define PG_DUMP_H
#include "pg_backup.h"
#define oidcmp(x,y) ( ((x) < (y) ? -1 : ((x) > (y)) ? 1 : 0) )
#define oideq(x,y) ( (x) == (y) )
#define oidle(x,y) ( (x) <= (y) )
#define oidge(x,y) ( (x) >= (y) )
#define oidzero(x) ( (x) == 0 )
/*
* The data structures used to store system catalog information. Every
* dumpable object is a subclass of DumpableObject.
*
* NOTE: the structures described here live for the entire pg_dump run;
* and in most cases we make a struct for every object we can find in the
* catalogs, not only those we are actually going to dump. Hence, it's
* best to store a minimal amount of per-object info in these structs,
* and retrieve additional per-object info when and if we dump a specific
* object. In particular, try to avoid retrieving expensive-to-compute
* information until it's known to be needed. We do, however, have to
* store enough info to determine whether an object should be dumped and
* what order to dump in.
*/
typedef enum
{
/* When modifying this enum, update priority tables in pg_dump_sort.c! */
DO_NAMESPACE,
DO_EXTENSION,
DO_TYPE,
DO_SHELL_TYPE,
DO_FUNC,
DO_AGG,
DO_OPERATOR,
DO_ACCESS_METHOD,
DO_OPCLASS,
DO_OPFAMILY,
DO_COLLATION,
DO_CONVERSION,
DO_TABLE,
DO_ATTRDEF,
DO_INDEX,
DO_STATSEXT,
DO_RULE,
DO_TRIGGER,
DO_CONSTRAINT,
DO_FK_CONSTRAINT, /* see note for ConstraintInfo */
DO_PROCLANG,
DO_CAST,
DO_TABLE_DATA,
DO_SEQUENCE_SET,
DO_DUMMY_TYPE,
DO_TSPARSER,
DO_TSDICT,
DO_TSTEMPLATE,
DO_TSCONFIG,
DO_FDW,
DO_FOREIGN_SERVER,
DO_DEFAULT_ACL,
DO_TRANSFORM,
DO_BLOB,
DO_BLOB_DATA,
DO_PRE_DATA_BOUNDARY,
DO_POST_DATA_BOUNDARY,
DO_EVENT_TRIGGER,
DO_REFRESH_MATVIEW,
DO_POLICY,
DO_PUBLICATION,
DO_PUBLICATION_REL,
DO_SUBSCRIPTION
} DumpableObjectType;
/* component types of an object which can be selected for dumping */
typedef uint32 DumpComponents; /* a bitmask of dump object components */
#define DUMP_COMPONENT_NONE (0)
#define DUMP_COMPONENT_DEFINITION (1 << 0)
#define DUMP_COMPONENT_DATA (1 << 1)
#define DUMP_COMPONENT_COMMENT (1 << 2)
#define DUMP_COMPONENT_SECLABEL (1 << 3)
#define DUMP_COMPONENT_ACL (1 << 4)
#define DUMP_COMPONENT_POLICY (1 << 5)
#define DUMP_COMPONENT_USERMAP (1 << 6)
#define DUMP_COMPONENT_ALL (0xFFFF)
/*
* component types which require us to obtain a lock on the table
*
* Note that some components only require looking at the information
* in the pg_catalog tables and, for those components, we do not need
* to lock the table. Be careful here though- some components use
* server-side functions which pull the latest information from
* SysCache and in those cases we *do* need to lock the table.
*
* We do not need locks for the COMMENT and SECLABEL components as
* those simply query their associated tables without using any
* server-side functions. We do not need locks for the ACL component
* as we pull that information from pg_class without using any
* server-side functions that use SysCache. The USERMAP component
* is only relevant for FOREIGN SERVERs and not tables, so no sense
* locking a table for that either (that can happen if we are going
* to dump "ALL" components for a table).
*
* We DO need locks for DEFINITION, due to various server-side
* functions that are used and POLICY due to pg_get_expr(). We set
* this up to grab the lock except in the cases we know to be safe.
*/
#define DUMP_COMPONENTS_REQUIRING_LOCK (\
DUMP_COMPONENT_DEFINITION |\
DUMP_COMPONENT_DATA |\
DUMP_COMPONENT_POLICY)
typedef struct _dumpableObject
{
DumpableObjectType objType;
CatalogId catId; /* zero if not a cataloged object */
DumpId dumpId; /* assigned by AssignDumpId() */
char *name; /* object name (should never be NULL) */
struct _namespaceInfo *namespace; /* containing namespace, or NULL */
DumpComponents dump; /* bitmask of components to dump */
DumpComponents dump_contains; /* as above, but for contained objects */
bool ext_member; /* true if object is member of extension */
DumpId *dependencies; /* dumpIds of objects this one depends on */
int nDeps; /* number of valid dependencies */
int allocDeps; /* allocated size of dependencies[] */
} DumpableObject;
typedef struct _namespaceInfo
{
DumpableObject dobj;
char *rolname; /* name of owner, or empty string */
char *nspacl;
char *rnspacl;
char *initnspacl;
char *initrnspacl;
} NamespaceInfo;
typedef struct _extensionInfo
{
DumpableObject dobj;
char *namespace; /* schema containing extension's objects */
bool relocatable;
char *extversion;
char *extconfig; /* info about configuration tables */
char *extcondition;
} ExtensionInfo;
typedef struct _typeInfo
{
DumpableObject dobj;
/*
* Note: dobj.name is the pg_type.typname entry. format_type() might
* produce something different than typname
*/
char *rolname; /* name of owner, or empty string */
char *typacl;
char *rtypacl;
char *inittypacl;
char *initrtypacl;
Oid typelem;
Oid typrelid;
char typrelkind; /* 'r', 'v', 'c', etc */
char typtype; /* 'b', 'c', etc */
bool isArray; /* true if auto-generated array type */
bool isDefined; /* true if typisdefined */
/* If needed, we'll create a "shell type" entry for it; link that here: */
struct _shellTypeInfo *shellType; /* shell-type entry, or NULL */
/* If it's a domain, we store links to its constraints here: */
int nDomChecks;
struct _constraintInfo *domChecks;
} TypeInfo;
typedef struct _shellTypeInfo
{
DumpableObject dobj;
TypeInfo *baseType; /* back link to associated base type */
} ShellTypeInfo;
typedef struct _funcInfo
{
DumpableObject dobj;
char *rolname; /* name of owner, or empty string */
Oid lang;
int nargs;
Oid *argtypes;
Oid prorettype;
char *proacl;
char *rproacl;
char *initproacl;
char *initrproacl;
} FuncInfo;
/* AggInfo is a superset of FuncInfo */
typedef struct _aggInfo
{
FuncInfo aggfn;
/* we don't require any other fields at the moment */
} AggInfo;
typedef struct _oprInfo
{
DumpableObject dobj;
char *rolname;
char oprkind;
Oid oprcode;
} OprInfo;
typedef struct _accessMethodInfo
{
DumpableObject dobj;
char amtype;
char *amhandler;
} AccessMethodInfo;
typedef struct _opclassInfo
{
DumpableObject dobj;
char *rolname;
} OpclassInfo;
typedef struct _opfamilyInfo
{
DumpableObject dobj;
char *rolname;
} OpfamilyInfo;
typedef struct _collInfo
{
DumpableObject dobj;
char *rolname;
} CollInfo;
typedef struct _convInfo
{
DumpableObject dobj;
char *rolname;
} ConvInfo;
typedef struct _tableInfo
{
/*
* These fields are collected for every table in the database.
*/
DumpableObject dobj;
char *rolname; /* name of owner, or empty string */
char *relacl;
char *rrelacl;
char *initrelacl;
char *initrrelacl;
char relkind;
char relpersistence; /* relation persistence */
bool relispopulated; /* relation is populated */
char relreplident; /* replica identifier */
char *reltablespace; /* relation tablespace */
char *reloptions; /* options specified by WITH (...) */
char *checkoption; /* WITH CHECK OPTION, if any */
char *toast_reloptions; /* WITH options for the TOAST table */
bool hasindex; /* does it have any indexes? */
bool hasrules; /* does it have any rules? */
bool hastriggers; /* does it have any triggers? */
bool rowsec; /* is row security enabled? */
bool forcerowsec; /* is row security forced? */
bool hasoids; /* does it have OIDs? */
uint32 frozenxid; /* table's relfrozenxid */
uint32 minmxid; /* table's relminmxid */
Oid toast_oid; /* toast table's OID, or 0 if none */
uint32 toast_frozenxid; /* toast table's relfrozenxid, if any */
uint32 toast_minmxid; /* toast table's relminmxid */
int ncheck; /* # of CHECK expressions */
char *reloftype; /* underlying type for typed table */
/* these two are set only if table is a sequence owned by a column: */
Oid owning_tab; /* OID of table owning sequence */
int owning_col; /* attr # of column owning sequence */
bool is_identity_sequence;
int relpages; /* table's size in pages (from pg_class) */
bool interesting; /* true if need to collect more data */
bool dummy_view; /* view's real definition must be postponed */
bool postponed_def; /* matview must be postponed into post-data */
bool ispartition; /* is table a partition? */
/*
* These fields are computed only if we decide the table is interesting
* (it's either a table to dump, or a direct parent of a dumpable table).
*/
int numatts; /* number of attributes */
char **attnames; /* the attribute names */
char **atttypnames; /* attribute type names */
int *atttypmod; /* type-specific type modifiers */
int *attstattarget; /* attribute statistics targets */
char *attstorage; /* attribute storage scheme */
char *typstorage; /* type storage scheme */
bool *attisdropped; /* true if attr is dropped; don't dump it */
char *attidentity;
int *attlen; /* attribute length, used by binary_upgrade */
char *attalign; /* attribute align, used by binary_upgrade */
bool *attislocal; /* true if attr has local definition */
char **attoptions; /* per-attribute options */
Oid *attcollation; /* per-attribute collation selection */
char **attfdwoptions; /* per-attribute fdw options */
bool *notnull; /* NOT NULL constraints on attributes */
bool *inhNotNull; /* true if NOT NULL is inherited */
struct _attrDefInfo **attrdefs; /* DEFAULT expressions */
struct _constraintInfo *checkexprs; /* CHECK constraints */
char *partkeydef; /* partition key definition */
char *partbound; /* partition bound definition */
bool needs_override; /* has GENERATED ALWAYS AS IDENTITY */
/*
* Stuff computed only for dumpable tables.
*/
int numParents; /* number of (immediate) parent tables */
struct _tableInfo **parents; /* TableInfos of immediate parents */
struct _tableDataInfo *dataObj; /* TableDataInfo, if dumping its data */
int numTriggers; /* number of triggers for table */
struct _triggerInfo *triggers; /* array of TriggerInfo structs */
} TableInfo;
typedef struct _attrDefInfo
{
DumpableObject dobj; /* note: dobj.name is name of table */
TableInfo *adtable; /* link to table of attribute */
int adnum;
char *adef_expr; /* decompiled DEFAULT expression */
bool separate; /* TRUE if must dump as separate item */
} AttrDefInfo;
typedef struct _tableDataInfo
{
DumpableObject dobj;
TableInfo *tdtable; /* link to table to dump */
bool oids; /* include OIDs in data? */
char *filtercond; /* WHERE condition to limit rows dumped */
} TableDataInfo;
typedef struct _indxInfo
{
DumpableObject dobj;
TableInfo *indextable; /* link to table the index is for */
char *indexdef;
char *tablespace; /* tablespace in which index is stored */
char *indreloptions; /* options specified by WITH (...) */
int indnkeys;
Oid *indkeys;
bool indisclustered;
bool indisreplident;
/* if there is an associated constraint object, its dumpId: */
DumpId indexconstraint;
int relpages; /* relpages of the underlying table */
} IndxInfo;
typedef struct _statsExtInfo
{
DumpableObject dobj;
TableInfo *statsexttable; /* link to table the stats ext is for */
char *statsextdef;
} StatsExtInfo;
typedef struct _ruleInfo
{
DumpableObject dobj;
TableInfo *ruletable; /* link to table the rule is for */
char ev_type;
bool is_instead;
char ev_enabled;
bool separate; /* TRUE if must dump as separate item */
/* separate is always true for non-ON SELECT rules */
} RuleInfo;
typedef struct _triggerInfo
{
DumpableObject dobj;
TableInfo *tgtable; /* link to table the trigger is for */
char *tgfname;
int tgtype;
int tgnargs;
char *tgargs;
bool tgisconstraint;
char *tgconstrname;
Oid tgconstrrelid;
char *tgconstrrelname;
char tgenabled;
bool tgdeferrable;
bool tginitdeferred;
char *tgdef;
} TriggerInfo;
typedef struct _evttriggerInfo
{
DumpableObject dobj;
char *evtname;
char *evtevent;
char *evtowner;
char *evttags;
char *evtfname;
char evtenabled;
} EventTriggerInfo;
/*
* struct ConstraintInfo is used for all constraint types. However we
* use a different objType for foreign key constraints, to make it easier
* to sort them the way we want.
*
* Note: condeferrable and condeferred are currently only valid for
* unique/primary-key constraints. Otherwise that info is in condef.
*/
typedef struct _constraintInfo
{
DumpableObject dobj;
TableInfo *contable; /* NULL if domain constraint */
TypeInfo *condomain; /* NULL if table constraint */
char contype;
char *condef; /* definition, if CHECK or FOREIGN KEY */
Oid confrelid; /* referenced table, if FOREIGN KEY */
DumpId conindex; /* identifies associated index if any */
bool condeferrable; /* TRUE if constraint is DEFERRABLE */
bool condeferred; /* TRUE if constraint is INITIALLY DEFERRED */
bool conislocal; /* TRUE if constraint has local definition */
bool separate; /* TRUE if must dump as separate item */
} ConstraintInfo;
typedef struct _procLangInfo
{
DumpableObject dobj;
bool lanpltrusted;
Oid lanplcallfoid;
Oid laninline;
Oid lanvalidator;
char *lanacl;
char *rlanacl;
char *initlanacl;
char *initrlanacl;
char *lanowner; /* name of owner, or empty string */
} ProcLangInfo;
typedef struct _castInfo
{
DumpableObject dobj;
Oid castsource;
Oid casttarget;
Oid castfunc;
char castcontext;
char castmethod;
} CastInfo;
typedef struct _transformInfo
{
DumpableObject dobj;
Oid trftype;
Oid trflang;
Oid trffromsql;
Oid trftosql;
} TransformInfo;
/* InhInfo isn't a DumpableObject, just temporary state */
typedef struct _inhInfo
{
Oid inhrelid; /* OID of a child table */
Oid inhparent; /* OID of its parent */
} InhInfo;
typedef struct _prsInfo
{
DumpableObject dobj;
Oid prsstart;
Oid prstoken;
Oid prsend;
Oid prsheadline;
Oid prslextype;
} TSParserInfo;
typedef struct _dictInfo
{
DumpableObject dobj;
char *rolname;
Oid dicttemplate;
char *dictinitoption;
} TSDictInfo;
typedef struct _tmplInfo
{
DumpableObject dobj;
Oid tmplinit;
Oid tmpllexize;
} TSTemplateInfo;
typedef struct _cfgInfo
{
DumpableObject dobj;
char *rolname;
Oid cfgparser;
} TSConfigInfo;
typedef struct _fdwInfo
{
DumpableObject dobj;
char *rolname;
char *fdwhandler;
char *fdwvalidator;
char *fdwoptions;
char *fdwacl;
char *rfdwacl;
char *initfdwacl;
char *initrfdwacl;
} FdwInfo;
typedef struct _foreignServerInfo
{
DumpableObject dobj;
char *rolname;
Oid srvfdw;
char *srvtype;
char *srvversion;
char *srvacl;
char *rsrvacl;
char *initsrvacl;
char *initrsrvacl;
char *srvoptions;
} ForeignServerInfo;
typedef struct _defaultACLInfo
{
DumpableObject dobj;
char *defaclrole;
char defaclobjtype;
char *defaclacl;
char *rdefaclacl;
char *initdefaclacl;
char *initrdefaclacl;
} DefaultACLInfo;
typedef struct _blobInfo
{
DumpableObject dobj;
char *rolname;
char *blobacl;
char *rblobacl;
char *initblobacl;
char *initrblobacl;
} BlobInfo;
/*
* The PolicyInfo struct is used to represent policies on a table and
* to indicate if a table has RLS enabled (ENABLE ROW SECURITY). If
* polname is NULL, then the record indicates ENABLE ROW SECURITY, while if
* it's non-NULL then this is a regular policy definition.
*/
typedef struct _policyInfo
{
DumpableObject dobj;
TableInfo *poltable;
char *polname; /* null indicates RLS is enabled on rel */
char polcmd;
bool polpermissive;
char *polroles;
char *polqual;
char *polwithcheck;
} PolicyInfo;
/*
* The PublicationInfo struct is used to represent publications.
*/
typedef struct _PublicationInfo
{
DumpableObject dobj;
char *rolname;
bool puballtables;
bool pubinsert;
bool pubupdate;
bool pubdelete;
} PublicationInfo;
/*
* The PublicationRelInfo struct is used to represent publication table
* mapping.
*/
typedef struct _PublicationRelInfo
{
DumpableObject dobj;
TableInfo *pubtable;
char *pubname;
} PublicationRelInfo;
/*
* The SubscriptionInfo struct is used to represent subscription.
*/
typedef struct _SubscriptionInfo
{
DumpableObject dobj;
char *rolname;
char *subconninfo;
char *subslotname;
char *subsynccommit;
char *subpublications;
} SubscriptionInfo;
/*
* We build an array of these with an entry for each object that is an
* extension member according to pg_depend.
*/
typedef struct _extensionMemberId
{
CatalogId catId; /* tableoid+oid of some member object */
ExtensionInfo *ext; /* owning extension */
} ExtensionMemberId;
/* global decls */
extern bool force_quotes; /* double-quotes for identifiers flag */
extern bool g_verbose; /* verbose flag */
/* placeholders for comment starting and ending delimiters */
extern char g_comment_start[10];
extern char g_comment_end[10];
extern char g_opaque_type[10]; /* name for the opaque type */
/*
* common utility functions
*/
extern TableInfo *getSchemaData(Archive *fout, int *numTablesPtr);
extern void AssignDumpId(DumpableObject *dobj);
extern DumpId createDumpId(void);
extern DumpId getMaxDumpId(void);
extern DumpableObject *findObjectByDumpId(DumpId dumpId);
extern DumpableObject *findObjectByCatalogId(CatalogId catalogId);
extern void getDumpableObjects(DumpableObject ***objs, int *numObjs);
extern void addObjectDependency(DumpableObject *dobj, DumpId refId);
extern void removeObjectDependency(DumpableObject *dobj, DumpId refId);
extern TableInfo *findTableByOid(Oid oid);
extern TypeInfo *findTypeByOid(Oid oid);
extern FuncInfo *findFuncByOid(Oid oid);
extern OprInfo *findOprByOid(Oid oid);
extern CollInfo *findCollationByOid(Oid oid);
extern NamespaceInfo *findNamespaceByOid(Oid oid);
extern ExtensionInfo *findExtensionByOid(Oid oid);
extern void setExtensionMembership(ExtensionMemberId *extmems, int nextmems);
extern ExtensionInfo *findOwningExtension(CatalogId catalogId);
extern void parseOidArray(const char *str, Oid *array, int arraysize);
extern void sortDumpableObjects(DumpableObject **objs, int numObjs,
DumpId preBoundaryId, DumpId postBoundaryId);
extern void sortDumpableObjectsByTypeName(DumpableObject **objs, int numObjs);
extern void sortDataAndIndexObjectsBySize(DumpableObject **objs, int numObjs);
/*
* version specific routines
*/
extern NamespaceInfo *getNamespaces(Archive *fout, int *numNamespaces);
extern ExtensionInfo *getExtensions(Archive *fout, int *numExtensions);
extern TypeInfo *getTypes(Archive *fout, int *numTypes);
extern FuncInfo *getFuncs(Archive *fout, int *numFuncs);
extern AggInfo *getAggregates(Archive *fout, int *numAggregates);
extern OprInfo *getOperators(Archive *fout, int *numOperators);
extern AccessMethodInfo *getAccessMethods(Archive *fout, int *numAccessMethods);
extern OpclassInfo *getOpclasses(Archive *fout, int *numOpclasses);
extern OpfamilyInfo *getOpfamilies(Archive *fout, int *numOpfamilies);
extern CollInfo *getCollations(Archive *fout, int *numCollations);
extern ConvInfo *getConversions(Archive *fout, int *numConversions);
extern TableInfo *getTables(Archive *fout, int *numTables);
extern void getOwnedSeqs(Archive *fout, TableInfo tblinfo[], int numTables);
extern InhInfo *getInherits(Archive *fout, int *numInherits);
extern void getIndexes(Archive *fout, TableInfo tblinfo[], int numTables);
extern void getExtendedStatistics(Archive *fout, TableInfo tblinfo[], int numTables);
extern void getConstraints(Archive *fout, TableInfo tblinfo[], int numTables);
extern RuleInfo *getRules(Archive *fout, int *numRules);
extern void getTriggers(Archive *fout, TableInfo tblinfo[], int numTables);
extern ProcLangInfo *getProcLangs(Archive *fout, int *numProcLangs);
extern CastInfo *getCasts(Archive *fout, int *numCasts);
extern TransformInfo *getTransforms(Archive *fout, int *numTransforms);
extern void getTableAttrs(Archive *fout, TableInfo *tbinfo, int numTables);
extern bool shouldPrintColumn(DumpOptions *dopt, TableInfo *tbinfo, int colno);
extern TSParserInfo *getTSParsers(Archive *fout, int *numTSParsers);
extern TSDictInfo *getTSDictionaries(Archive *fout, int *numTSDicts);
extern TSTemplateInfo *getTSTemplates(Archive *fout, int *numTSTemplates);
extern TSConfigInfo *getTSConfigurations(Archive *fout, int *numTSConfigs);
extern FdwInfo *getForeignDataWrappers(Archive *fout,
int *numForeignDataWrappers);
extern ForeignServerInfo *getForeignServers(Archive *fout,
int *numForeignServers);
extern DefaultACLInfo *getDefaultACLs(Archive *fout, int *numDefaultACLs);
extern void getExtensionMembership(Archive *fout, ExtensionInfo extinfo[],
int numExtensions);
extern void processExtensionTables(Archive *fout, ExtensionInfo extinfo[],
int numExtensions);
extern EventTriggerInfo *getEventTriggers(Archive *fout, int *numEventTriggers);
extern void getPolicies(Archive *fout, TableInfo tblinfo[], int numTables);
extern void getPublications(Archive *fout);
extern void getPublicationTables(Archive *fout, TableInfo tblinfo[],
int numTables);
extern void getSubscriptions(Archive *fout);
#endif /* PG_DUMP_H */
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