granicus.if.org Git - postgresql/blob - src/include/rewrite/rowsecurity.h

   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) 1996-2017, 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 */