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) 1996-2015, 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         Oid                                     policy_id;              /* OID of the policy */
  23         char                       *policy_name;        /* Name of the policy */
  24         char                            polcmd;                 /* Type of command policy is for */
  25         ArrayType                  *roles;                      /* Array of roles policy is for */
  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;
  41
  42 extern bool prepend_row_security_policies(Query* root, RangeTblEntry* rte,
  43                                                                            int rt_index);
  44
  45 #endif  /* ROWSECURITY_H */