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af1a949109
In commit 9c0a0de4c, I'd failed to notice that catalog/catalog.h
should also be considered a frontend-unsafe header, because it includes
(and needs) the full form of pg_class.h, not to mention relcache.h.
However, various frontend code was depending on it to get
TABLESPACE_VERSION_DIRECTORY, so refactoring of some sort is called for.
The cleanest answer seems to be to move TABLESPACE_VERSION_DIRECTORY,
as well as the OIDCHARS symbol, to common/relpath.h. Do that, and mop up
inclusions as necessary. (I found that quite a few current users of
catalog/catalog.h don't seem to need it at all anymore, apparently as a
result of the refactorings that created common/relpath.[hc]. And
initdb.c needed it only as a route to pg_class_d.h.)
Discussion: https://postgr.es/m/6629.1523294509@sss.pgh.pa.us
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*-------------------------------------------------------------------------
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*
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* relpath.h
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* Declarations for GetRelationPath() and friends
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*
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* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/common/relpath.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef RELPATH_H
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#define RELPATH_H
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/*
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* 'pgrminclude ignore' needed here because CppAsString2() does not throw
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* an error if the symbol is not defined.
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*/
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#include "catalog/catversion.h" /* pgrminclude ignore */
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/*
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* Name of major-version-specific tablespace subdirectories
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*/
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#define TABLESPACE_VERSION_DIRECTORY "PG_" PG_MAJORVERSION "_" \
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CppAsString2(CATALOG_VERSION_NO)
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/* Characters to allow for an OID in a relation path */
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#define OIDCHARS 10 /* max chars printed by %u */
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/*
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* Stuff for fork names.
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*
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* The physical storage of a relation consists of one or more forks.
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* The main fork is always created, but in addition to that there can be
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* additional forks for storing various metadata. ForkNumber is used when
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* we need to refer to a specific fork in a relation.
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*/
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typedef enum ForkNumber
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{
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InvalidForkNumber = -1,
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MAIN_FORKNUM = 0,
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FSM_FORKNUM,
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VISIBILITYMAP_FORKNUM,
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INIT_FORKNUM
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/*
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* NOTE: if you add a new fork, change MAX_FORKNUM and possibly
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* FORKNAMECHARS below, and update the forkNames array in
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* src/common/relpath.c
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*/
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} ForkNumber;
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#define MAX_FORKNUM INIT_FORKNUM
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#define FORKNAMECHARS 4 /* max chars for a fork name */
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extern const char *const forkNames[];
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extern ForkNumber forkname_to_number(const char *forkName);
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extern int forkname_chars(const char *str, ForkNumber *fork);
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/*
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* Stuff for computing filesystem pathnames for relations.
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*/
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extern char *GetDatabasePath(Oid dbNode, Oid spcNode);
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extern char *GetRelationPath(Oid dbNode, Oid spcNode, Oid relNode,
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int backendId, ForkNumber forkNumber);
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/*
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* Wrapper macros for GetRelationPath. Beware of multiple
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* evaluation of the RelFileNode or RelFileNodeBackend argument!
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*/
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/* First argument is a RelFileNode */
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#define relpathbackend(rnode, backend, forknum) \
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GetRelationPath((rnode).dbNode, (rnode).spcNode, (rnode).relNode, \
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backend, forknum)
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/* First argument is a RelFileNode */
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#define relpathperm(rnode, forknum) \
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relpathbackend(rnode, InvalidBackendId, forknum)
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/* First argument is a RelFileNodeBackend */
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#define relpath(rnode, forknum) \
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relpathbackend((rnode).node, (rnode).backend, forknum)
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#endif /* RELPATH_H */
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