PostgreSQL Source Code  git master
fsmfuncs.c File Reference
#include "postgres.h"
#include "pageinspect.h"
#include "funcapi.h"
#include "lib/stringinfo.h"
#include "miscadmin.h"
#include "storage/fsm_internals.h"
#include "utils/builtins.h"
Include dependency graph for fsmfuncs.c:

Go to the source code of this file.

Functions

 PG_FUNCTION_INFO_V1 (fsm_page_contents)
 
Datum fsm_page_contents (PG_FUNCTION_ARGS)
 

Function Documentation

◆ fsm_page_contents()

Datum fsm_page_contents ( PG_FUNCTION_ARGS  )

Definition at line 36 of file fsmfuncs.c.

References appendStringInfo(), cstring_to_text_with_len(), StringInfoData::data, ereport, errcode(), errmsg(), ERROR, FSMPageData::fp_next_slot, FSMPageData::fp_nodes, i, initStringInfo(), StringInfoData::len, NodesPerPage, PageGetContents, PG_GETARG_BYTEA_P, PG_RETURN_TEXT_P, superuser(), and VARDATA.

37 {
38  bytea *raw_page = PG_GETARG_BYTEA_P(0);
39  StringInfoData sinfo;
40  FSMPage fsmpage;
41  int i;
42 
43  if (!superuser())
44  ereport(ERROR,
45  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
46  (errmsg("must be superuser to use raw page functions"))));
47 
48  fsmpage = (FSMPage) PageGetContents(VARDATA(raw_page));
49 
50  initStringInfo(&sinfo);
51 
52  for (i = 0; i < NodesPerPage; i++)
53  {
54  if (fsmpage->fp_nodes[i] != 0)
55  appendStringInfo(&sinfo, "%d: %d\n", i, fsmpage->fp_nodes[i]);
56  }
57  appendStringInfo(&sinfo, "fp_next_slot: %d\n", fsmpage->fp_next_slot);
58 
60 }
#define VARDATA(PTR)
Definition: postgres.h:303
uint8 fp_nodes[FLEXIBLE_ARRAY_MEMBER]
Definition: fsm_internals.h:42
int errcode(int sqlerrcode)
Definition: elog.c:575
bool superuser(void)
Definition: superuser.c:47
#define PG_GETARG_BYTEA_P(n)
Definition: fmgr.h:299
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:78
#define ERROR
Definition: elog.h:43
FSMPageData * FSMPage
Definition: fsm_internals.h:45
text * cstring_to_text_with_len(const char *s, int len)
Definition: varlena.c:161
#define ereport(elevel, rest)
Definition: elog.h:122
void initStringInfo(StringInfo str)
Definition: stringinfo.c:46
#define PageGetContents(page)
Definition: bufpage.h:242
#define PG_RETURN_TEXT_P(x)
Definition: fmgr.h:331
int errmsg(const char *fmt,...)
Definition: elog.c:797
int i
Definition: c.h:487
#define NodesPerPage
Definition: fsm_internals.h:51

◆ PG_FUNCTION_INFO_V1()

PG_FUNCTION_INFO_V1 ( fsm_page_contents  )