rowsecurity.h

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/* -------------------------------------------------------------------------
 *
 * rowsecurity.h
 *
 *    prototypes for rewrite/rowsecurity.c and the structures for managing
 *    the row security policies for relations in relcache.
 *
 * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * -------------------------------------------------------------------------
 */
#ifndef ROWSECURITY_H
#define ROWSECURITY_H
 
#include "nodes/parsenodes.h"
#include "utils/array.h"
#include "utils/relcache.h"
 
typedef struct RowSecurityPolicy
{
    char       *policy_name;    /* Name of the policy */
    char        polcmd;         /* Type of command policy is for */
    ArrayType  *roles;          /* Array of roles policy is for */
    bool        permissive;     /* restrictive or permissive policy */
    Expr       *qual;           /* Expression to filter rows */
    Expr       *with_check_qual;    /* Expression to limit rows allowed */
    bool        hassublinks;    /* If either expression has sublinks */
} RowSecurityPolicy;
 
typedef struct RowSecurityDesc
{
    MemoryContext rscxt;        /* row security memory context */
    List       *policies;       /* list of row security policies */
} RowSecurityDesc;
 
typedef List *(*row_security_policy_hook_type) (CmdType cmdtype,
                                                Relation relation);
 
extern PGDLLIMPORT row_security_policy_hook_type row_security_policy_hook_permissive;
 
extern PGDLLIMPORT row_security_policy_hook_type row_security_policy_hook_restrictive;
 
extern void get_row_security_policies(Query *root,
                                      RangeTblEntry *rte, int rt_index,
                                      List **securityQuals, List **withCheckOptions,
                                      bool *hasRowSecurity, bool *hasSubLinks);
 
#endif                          /* ROWSECURITY_H */