relpath.h

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/*-------------------------------------------------------------------------
 *
 * relpath.h
 *      Declarations for relpath() and friends
 *
 * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/common/relpath.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef RELPATH_H
#define RELPATH_H

/*
 *  'pgrminclude ignore' needed here because CppAsString2() does not throw
 *  an error if the symbol is not defined.
 */
#include "catalog/catversion.h" /* pgrminclude ignore */
#include "storage/relfilenode.h"


#define OIDCHARS        10      /* max chars printed by %u */
#define TABLESPACE_VERSION_DIRECTORY    "PG_" PG_MAJORVERSION "_" \
                                    CppAsString2(CATALOG_VERSION_NO)

extern const char *forkNames[];
extern int  forkname_chars(const char *str, ForkNumber *fork);
extern char *relpathbackend(RelFileNode rnode, BackendId backend,
               ForkNumber forknum);

/* First argument is a RelFileNodeBackend */
#define relpath(rnode, forknum) \
        relpathbackend((rnode).node, (rnode).backend, (forknum))

/* First argument is a RelFileNode */
#define relpathperm(rnode, forknum) \
        relpathbackend((rnode), InvalidBackendId, (forknum))

#endif      /* RELPATH_H */