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77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* inet.h
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* Declarations for operations on INET datatypes.
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*
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*
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* Portions Copyright (c) 1996-2003, 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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* $Id: inet.h,v 1.16 2003/08/04 02:40:15 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef INET_H
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#define INET_H
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/*
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* This is the internal storage format for IP addresses
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* (both INET and CIDR datatypes):
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*/
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typedef struct
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{
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unsigned char family;
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unsigned char bits;
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unsigned char type;
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unsigned char ip_addr[16]; /* 128 bits of address */
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} inet_struct;
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/*
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* Referencing all of the non-AF_INET types to AF_INET lets us work on
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* machines which may not have the appropriate address family (like
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* inet6 addresses when AF_INET6 isn't present) but doesn't cause a
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* dump/reload requirement. Existing databases used AF_INET for the family
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* type on disk.
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*/
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#define PGSQL_AF_INET (AF_INET + 0)
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#define PGSQL_AF_INET6 (AF_INET + 1)
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/*
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* Both INET and CIDR addresses are represented within Postgres as varlena
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* objects, ie, there is a varlena header (basically a length word) in front
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* of the struct type depicted above.
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*
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* Although these types are variable-length, the maximum length
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* is pretty short, so we make no provision for TOASTing them.
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*/
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typedef struct varlena inet;
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/*
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* This is the internal storage format for MAC addresses:
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*/
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typedef struct macaddr
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{
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unsigned char a;
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unsigned char b;
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unsigned char c;
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unsigned char d;
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unsigned char e;
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unsigned char f;
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} macaddr;
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/*
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* fmgr interface macros
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*/
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#define DatumGetInetP(X) ((inet *) DatumGetPointer(X))
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#define InetPGetDatum(X) PointerGetDatum(X)
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#define PG_GETARG_INET_P(n) DatumGetInetP(PG_GETARG_DATUM(n))
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#define PG_RETURN_INET_P(x) return InetPGetDatum(x)
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/* macaddr is a fixed-length pass-by-reference datatype */
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#define DatumGetMacaddrP(X) ((macaddr *) DatumGetPointer(X))
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#define MacaddrPGetDatum(X) PointerGetDatum(X)
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#define PG_GETARG_MACADDR_P(n) DatumGetMacaddrP(PG_GETARG_DATUM(n))
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#define PG_RETURN_MACADDR_P(x) return MacaddrPGetDatum(x)
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#endif /* INET_H */
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