1 /* -------------------------------------------------------------------------
2  *
3  * rowsecurity.h
4  *
5  *	  prototypes for rewrite/rowsecurity.c and the structures for managing
6  *	  the row security policies for relations in relcache.
7  *
8  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
9  * Portions Copyright (c) 1994, Regents of the University of California
10  *
11  * -------------------------------------------------------------------------
12  */
13 #ifndef ROWSECURITY_H
14 #define ROWSECURITY_H
15 
16 #include "nodes/parsenodes.h"
17 #include "utils/array.h"
18 #include "utils/relcache.h"
19 
20 typedef struct RowSecurityPolicy
21 {
22 	char	   *policy_name;	/* Name of the policy */
23 	char		polcmd;			/* Type of command policy is for */
24 	ArrayType  *roles;			/* Array of roles policy is for */
25 	bool		permissive;		/* restrictive or permissive policy */
26 	Expr	   *qual;			/* Expression to filter rows */
27 	Expr	   *with_check_qual;	/* Expression to limit rows allowed */
28 	bool		hassublinks;	/* If either expression has sublinks */
29 } RowSecurityPolicy;
30 
31 typedef struct RowSecurityDesc
32 {
33 	MemoryContext rscxt;		/* row security memory context */
34 	List	   *policies;		/* list of row security policies */
35 } RowSecurityDesc;
36 
37 typedef List *(*row_security_policy_hook_type) (CmdType cmdtype,
38 												Relation relation);
39 
40 extern PGDLLIMPORT row_security_policy_hook_type row_security_policy_hook_permissive;
41 
42 extern PGDLLIMPORT row_security_policy_hook_type row_security_policy_hook_restrictive;
43 
44 extern void get_row_security_policies(Query *root,
45 									  RangeTblEntry *rte, int rt_index,
46 									  List **securityQuals, List **withCheckOptions,
47 									  bool *hasRowSecurity, bool *hasSubLinks);
48 
49 #endif							/* ROWSECURITY_H */
50