granicus.if.org Git - postgresql/blob - src/backend/access/rmgrdesc/smgrdesc.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * smgrdesc.c
   4  *        rmgr descriptor routines for catalog/storage.c
   5  *
   6  * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
   7  * Portions Copyright (c) 1994, Regents of the University of California
   8  *
   9  *
  10  * IDENTIFICATION
  11  *        src/backend/access/rmgrdesc/smgrdesc.c
  12  *
  13  *-------------------------------------------------------------------------
  14  */
  15 #include "postgres.h"
  16
  17 #include "catalog/catalog.h"
  18 #include "catalog/storage_xlog.h"
  19
  20
  21 void
  22 smgr_desc(StringInfo buf, uint8 xl_info, char *rec)
  23 {
  24         uint8           info = xl_info & ~XLR_INFO_MASK;
  25
  26         if (info == XLOG_SMGR_CREATE)
  27         {
  28                 xl_smgr_create *xlrec = (xl_smgr_create *) rec;
  29                 char       *path = relpathperm(xlrec->rnode, xlrec->forkNum);
  30
  31                 appendStringInfo(buf, "file create: %s", path);
  32                 pfree(path);
  33         }
  34         else if (info == XLOG_SMGR_TRUNCATE)
  35         {
  36                 xl_smgr_truncate *xlrec = (xl_smgr_truncate *) rec;
  37                 char       *path = relpathperm(xlrec->rnode, MAIN_FORKNUM);
  38
  39                 appendStringInfo(buf, "file truncate: %s to %u blocks", path,
  40                                                  xlrec->blkno);
  41                 pfree(path);
  42         }
  43         else
  44                 appendStringInfoString(buf, "UNKNOWN");
  45 }