fsmfuncs.c File Reference

#include "postgres.h"
#include "fmgr.h"
#include "lib/stringinfo.h"
#include "miscadmin.h"
#include "pageinspect.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 35 of file fsmfuncs.c.

{
    bytea      *raw_page = PG_GETARG_BYTEA_P(0);
    StringInfoData sinfo;
    Page        page;
    FSMPage     fsmpage;
    int         i;
 
    if (!superuser())
        ereport(ERROR,
                (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
                 errmsg("must be superuser to use raw page functions")));
 
    page = get_page_from_raw(raw_page);
 
    if (PageIsNew(page))
        PG_RETURN_NULL();
 
    fsmpage = (FSMPage) PageGetContents(page);
 
    initStringInfo(&sinfo);
 
    for (i = 0; i < NodesPerPage; i++)
    {
        if (fsmpage->fp_nodes[i] != 0)
            appendStringInfo(&sinfo, "%d: %d\n", i, fsmpage->fp_nodes[i]);
    }
    appendStringInfo(&sinfo, "fp_next_slot: %d\n", fsmpage->fp_next_slot);
 
    PG_RETURN_TEXT_P(cstring_to_text_with_len(sinfo.data, sinfo.len));
}

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

PG_FUNCTION_INFO_V1()

PG_FUNCTION_INFO_V1

(

fsm_page_contents

)