52fa0201f9
This feature allows to partially recover data from a given segment file in format suitable for using in COPY FROM statement. List of supported data types is currently not full and TOAST is not yet supported, but it's better than nothing. Hopefully data recovery will be improved in the future. Implemented by Aleksander Alekseev, reviewed by Dmitry Ivanov, tested by Dmitry Ivanov and Grigoriy Smolkin.
1865 lines
53 KiB
C
1865 lines
53 KiB
C
/*
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* pg_filedump.c - PostgreSQL file dump utility for dumping and
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* formatting heap (data), index and control files.
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*
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* Copyright (c) 2002-2010 Red Hat, Inc.
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* Copyright (c) 2011-2016, PostgreSQL Global Development Group
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Original Author: Patrick Macdonald <patrickm@redhat.com>
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*/
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#include "pg_filedump.h"
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#include <utils/pg_crc.h>
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/* checksum_impl.h uses Assert, which doesn't work outside the server */
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#undef Assert
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#define Assert(X)
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#include "storage/checksum.h"
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#include "storage/checksum_impl.h"
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#include "decode.h"
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/***
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* Global variables for ease of use mostly
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*/
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/* File to dump or format */
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static FILE *fp = NULL;
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/* File name for display */
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static char *fileName = NULL;
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/* Cache for current block */
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static char *buffer = NULL;
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/* Current block size */
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static unsigned int blockSize = 0;
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/* Current block in file */
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static unsigned int currentBlock = 0;
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/* Segment size in bytes */
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static unsigned int segmentSize = RELSEG_SIZE * BLCKSZ;
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/* Number of current segment */
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static unsigned int segmentNumber = 0;
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/* Offset of current block */
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static unsigned int pageOffset = 0;
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/* Number of bytes to format */
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static unsigned int bytesToFormat = 0;
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/* Block version number */
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static unsigned int blockVersion = 0;
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/* Program exit code */
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static int exitCode = 0;
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/***
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* Function Prototypes
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*/
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static void DisplayOptions(unsigned int validOptions);
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static unsigned int ConsumeOptions(int numOptions, char **options);
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static int GetOptionValue(char *optionString);
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static void FormatBlock(BlockNumber blkno);
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static unsigned int GetBlockSize();
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static unsigned int GetSpecialSectionType(Page page);
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static bool IsBtreeMetaPage(Page page);
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static void CreateDumpFileHeader(int numOptions, char **options);
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static int FormatHeader(Page page, BlockNumber blkno);
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static void FormatItemBlock(Page page);
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static void FormatItem(unsigned int numBytes, unsigned int startIndex,
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unsigned int formatAs);
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static void FormatSpecial();
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static void FormatControl();
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static void FormatBinary(unsigned int numBytes, unsigned int startIndex);
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static void DumpBinaryBlock();
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static void DumpFileContents();
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/* Send properly formed usage information to the user. */
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static void
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DisplayOptions(unsigned int validOptions)
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{
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if (validOptions == OPT_RC_COPYRIGHT)
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printf
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("\nVersion %s (for %s)"
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"\nCopyright (c) 2002-2010 Red Hat, Inc."
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"\nCopyright (c) 2011-2016, PostgreSQL Global Development Group\n",
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FD_VERSION, FD_PG_VERSION);
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printf
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("\nUsage: pg_filedump [-abcdfhikxy] [-R startblock [endblock]] [-D attrlist] [-S blocksize] [-s segsize] [-n segnumber] file\n\n"
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"Display formatted contents of a PostgreSQL heap/index/control file\n"
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"Defaults are: relative addressing, range of the entire file, block\n"
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" size as listed on block 0 in the file\n\n"
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"The following options are valid for heap and index files:\n"
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" -a Display absolute addresses when formatting (Block header\n"
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" information is always block relative)\n"
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" -b Display binary block images within a range (Option will turn\n"
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" off all formatting options)\n"
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" -d Display formatted block content dump (Option will turn off\n"
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" all other formatting options)\n"
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" -D Try to decode tuples using provided list of attribute types.\n"
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" [attrlist] should be something like int,timestamp,bool,uuid\n"
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" -f Display formatted block content dump along with interpretation\n"
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" -h Display this information\n"
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" -i Display interpreted item details\n"
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" -k Verify block checksums\n"
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" -R Display specific block ranges within the file (Blocks are\n"
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" indexed from 0)\n" " [startblock]: block to start at\n"
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" [endblock]: block to end at\n"
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" A startblock without an endblock will format the single block\n"
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" -s Force segment size to [segsize]\n"
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" -n Force segment number to [segnumber]\n"
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" -S Force block size to [blocksize]\n"
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" -x Force interpreted formatting of block items as index items\n"
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" -y Force interpreted formatting of block items as heap items\n\n"
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"The following options are valid for control files:\n"
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" -c Interpret the file listed as a control file\n"
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" -f Display formatted content dump along with interpretation\n"
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" -S Force block size to [blocksize]\n"
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"\nReport bugs to <pgsql-bugs@postgresql.org>\n");
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}
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/*
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* Determine segment number by segment file name. For instance, if file
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* name is /path/to/xxxx.7 procedure returns 7. Default return value is 0.
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*/
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static unsigned int
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GetSegmentNumberFromFileName(const char* fileName)
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{
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int segnumOffset = strlen(fileName) - 1;
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if(segnumOffset < 0)
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return 0;
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while(isdigit(fileName[segnumOffset]))
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{
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segnumOffset--;
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if(segnumOffset < 0)
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return 0;
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}
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if(fileName[segnumOffset] != '.')
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return 0;
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return atoi(&fileName[segnumOffset+1]);
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}
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/* Iterate through the provided options and set the option flags. */
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/* An error will result in a positive rc and will force a display */
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/* of the usage information. This routine returns enum */
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/* optionReturnCode values. */
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static unsigned int
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ConsumeOptions(int numOptions, char **options)
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{
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unsigned int rc = OPT_RC_VALID;
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unsigned int x;
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unsigned int optionStringLength;
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char *optionString;
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char duplicateSwitch = 0x00;
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for (x = 1; x < numOptions; x++)
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{
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optionString = options[x];
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optionStringLength = strlen(optionString);
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/* Range is a special case where we have to consume the next 1 or 2 */
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/* parameters to mark the range start and end */
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if ((optionStringLength == 2) && (strcmp(optionString, "-R") == 0))
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{
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int range = 0;
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SET_OPTION(blockOptions, BLOCK_RANGE, 'R');
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/* Only accept the range option once */
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if (rc == OPT_RC_DUPLICATE)
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break;
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/* Make sure there are options after the range identifier */
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if (x >= (numOptions - 2))
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{
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rc = OPT_RC_INVALID;
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printf("Error: Missing range start identifier.\n");
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exitCode = 1;
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break;
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}
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/*
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* Mark that we have the range and advance the option to what
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* should
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*/
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/* be the range start. Check the value of the next parameter */
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optionString = options[++x];
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if ((range = GetOptionValue(optionString)) < 0)
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{
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rc = OPT_RC_INVALID;
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printf("Error: Invalid range start identifier <%s>.\n",
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optionString);
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exitCode = 1;
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break;
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}
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/* The default is to dump only one block */
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blockStart = blockEnd = (unsigned int) range;
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/* We have our range start marker, check if there is an end */
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/* marker on the option line. Assume that the last option */
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/* is the file we are dumping, so check if there are options */
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/* range start marker and the file */
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if (x <= (numOptions - 3))
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{
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if ((range = GetOptionValue(options[x + 1])) >= 0)
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{
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/* End range must be => start range */
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if (blockStart <= range)
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{
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blockEnd = (unsigned int) range;
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x++;
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}
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else
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{
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rc = OPT_RC_INVALID;
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printf("Error: Requested block range start <%d> is "
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"greater than end <%d>.\n", blockStart, range);
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exitCode = 1;
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break;
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}
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}
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}
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}
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/* Check for the special case where the user forces a block size */
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/* instead of having the tool determine it. This is useful if */
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/* the header of block 0 is corrupt and gives a garbage block size */
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else if ((optionStringLength == 2)
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&& (strcmp(optionString, "-S") == 0))
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{
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int localBlockSize;
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SET_OPTION(blockOptions, BLOCK_FORCED, 'S');
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/* Only accept the forced size option once */
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if (rc == OPT_RC_DUPLICATE)
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break;
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/* The token immediately following -S is the block size */
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if (x >= (numOptions - 2))
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{
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rc = OPT_RC_INVALID;
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printf("Error: Missing block size identifier.\n");
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break;
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}
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/* Next option encountered must be forced block size */
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optionString = options[++x];
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if ((localBlockSize = GetOptionValue(optionString)) > 0)
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blockSize = (unsigned int) localBlockSize;
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else
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{
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rc = OPT_RC_INVALID;
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printf("Error: Invalid block size requested <%s>.\n",
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optionString);
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exitCode = 1;
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break;
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}
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}
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/* Check for the special case where the user forces a segment size. */
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else if ((optionStringLength == 2)
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&& (strcmp(optionString, "-s") == 0))
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{
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int localSegmentSize;
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SET_OPTION(segmentOptions, SEGMENT_SIZE_FORCED, 's');
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/* Only accept the forced size option once */
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if (rc == OPT_RC_DUPLICATE)
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break;
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/* The token immediately following -s is the segment size */
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if (x >= (numOptions - 2))
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{
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rc = OPT_RC_INVALID;
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printf("Error: Missing segment size identifier.\n");
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exitCode = 1;
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break;
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}
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/* Next option encountered must be forced segment size */
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optionString = options[++x];
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if ((localSegmentSize = GetOptionValue(optionString)) > 0)
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segmentSize = (unsigned int) localSegmentSize;
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else
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{
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rc = OPT_RC_INVALID;
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printf("Error: Invalid segment size requested <%s>.\n",
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optionString);
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exitCode = 1;
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break;
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}
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}
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/* Check for the special case where the user forces tuples decoding. */
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else if((optionStringLength == 2)
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&& (strcmp(optionString, "-D") == 0))
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{
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SET_OPTION(blockOptions, BLOCK_DECODE, 'D');
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/* Only accept the decode option once */
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if (rc == OPT_RC_DUPLICATE)
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break;
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/* The token immediately following -D is attrubute types string */
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if (x >= (numOptions - 2))
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{
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rc = OPT_RC_INVALID;
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printf("Error: Missing attribute types string.\n");
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exitCode = 1;
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break;
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}
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/* Next option encountered must be attribute types string */
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optionString = options[++x];
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if(ParseAttributeTypesString(optionString) < 0)
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{
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rc = OPT_RC_INVALID;
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printf("Error: Invalid attribute types string <%s>.\n",
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optionString);
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exitCode = 1;
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break;
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}
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}
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/* Check for the special case where the user forces a segment number */
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/* instead of having the tool determine it by file name. */
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else if ((optionStringLength == 2)
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&& (strcmp(optionString, "-n") == 0))
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{
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int localSegmentNumber;
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SET_OPTION(segmentOptions, SEGMENT_NUMBER_FORCED, 'n');
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/* Only accept the forced segment number option once */
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if (rc == OPT_RC_DUPLICATE)
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break;
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/* The token immediately following -n is the segment number */
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if (x >= (numOptions - 2))
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{
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rc = OPT_RC_INVALID;
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printf("Error: Missing segment number identifier.\n");
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exitCode = 1;
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break;
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}
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/* Next option encountered must be forced segment number */
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optionString = options[++x];
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if ((localSegmentNumber = GetOptionValue(optionString)) > 0)
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segmentNumber = (unsigned int) localSegmentNumber;
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else
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{
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rc = OPT_RC_INVALID;
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printf("Error: Invalid segment number requested <%s>.\n",
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optionString);
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exitCode = 1;
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break;
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}
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}
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/* The last option MUST be the file name */
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else if (x == (numOptions - 1))
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{
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/* Check to see if this looks like an option string before opening */
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if (optionString[0] != '-')
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{
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fp = fopen(optionString, "rb");
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if (fp)
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{
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fileName = options[x];
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if(!(segmentOptions & SEGMENT_NUMBER_FORCED))
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segmentNumber = GetSegmentNumberFromFileName(fileName);
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}
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else
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{
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rc = OPT_RC_FILE;
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printf("Error: Could not open file <%s>.\n", optionString);
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exitCode = 1;
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break;
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}
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}
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else
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{
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/* Could be the case where the help flag is used without a */
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/* filename. Otherwise, the last option isn't a file */
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if (strcmp(optionString, "-h") == 0)
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rc = OPT_RC_COPYRIGHT;
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else
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{
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rc = OPT_RC_FILE;
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printf("Error: Missing file name to dump.\n");
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exitCode = 1;
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}
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break;
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}
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}
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else
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{
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unsigned int y;
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|
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/* Option strings must start with '-' and contain switches */
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if (optionString[0] != '-')
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{
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rc = OPT_RC_INVALID;
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printf("Error: Invalid option string <%s>.\n", optionString);
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exitCode = 1;
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break;
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}
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/* Iterate through the singular option string, throw out */
|
|
/* garbage, duplicates and set flags to be used in formatting */
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for (y = 1; y < optionStringLength; y++)
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{
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switch (optionString[y])
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{
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/* Use absolute addressing */
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case 'a':
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SET_OPTION(blockOptions, BLOCK_ABSOLUTE, 'a');
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break;
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/* Dump the binary contents of the page */
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case 'b':
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SET_OPTION(blockOptions, BLOCK_BINARY, 'b');
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break;
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/* Dump the listed file as a control file */
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case 'c':
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SET_OPTION(controlOptions, CONTROL_DUMP, 'c');
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break;
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|
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/* Do not interpret the data. Format to hex and ascii. */
|
|
case 'd':
|
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SET_OPTION(blockOptions, BLOCK_NO_INTR, 'd');
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break;
|
|
|
|
/*
|
|
* Format the contents of the block with
|
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* interpretation
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*/
|
|
/* of the headers */
|
|
case 'f':
|
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SET_OPTION(blockOptions, BLOCK_FORMAT, 'f');
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break;
|
|
|
|
/* Display the usage screen */
|
|
case 'h':
|
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rc = OPT_RC_COPYRIGHT;
|
|
break;
|
|
|
|
/* Format the items in detail */
|
|
case 'i':
|
|
SET_OPTION(itemOptions, ITEM_DETAIL, 'i');
|
|
break;
|
|
|
|
/* Verify block checksums */
|
|
case 'k':
|
|
SET_OPTION(blockOptions, BLOCK_CHECKSUMS, 'k');
|
|
break;
|
|
|
|
/* Interpret items as standard index values */
|
|
case 'x':
|
|
SET_OPTION(itemOptions, ITEM_INDEX, 'x');
|
|
if (itemOptions & ITEM_HEAP)
|
|
{
|
|
rc = OPT_RC_INVALID;
|
|
printf("Error: Options <y> and <x> are "
|
|
"mutually exclusive.\n");
|
|
exitCode = 1;
|
|
}
|
|
break;
|
|
|
|
/* Interpret items as heap values */
|
|
case 'y':
|
|
SET_OPTION(itemOptions, ITEM_HEAP, 'y');
|
|
if (itemOptions & ITEM_INDEX)
|
|
{
|
|
rc = OPT_RC_INVALID;
|
|
printf("Error: Options <x> and <y> are "
|
|
"mutually exclusive.\n");
|
|
exitCode = 1;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
rc = OPT_RC_INVALID;
|
|
printf("Error: Unknown option <%c>.\n", optionString[y]);
|
|
exitCode = 1;
|
|
break;
|
|
}
|
|
|
|
if (rc)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (rc == OPT_RC_DUPLICATE)
|
|
{
|
|
printf("Error: Duplicate option listed <%c>.\n", duplicateSwitch);
|
|
exitCode = 1;
|
|
}
|
|
|
|
/* If the user requested a control file dump, a pure binary */
|
|
/* block dump or a non-interpreted formatted dump, mask off */
|
|
/* all other block level options (with a few exceptions) */
|
|
if (rc == OPT_RC_VALID)
|
|
{
|
|
/* The user has requested a control file dump, only -f and */
|
|
/* -S are valid... turn off all other formatting */
|
|
if (controlOptions & CONTROL_DUMP)
|
|
{
|
|
if ((blockOptions & ~(BLOCK_FORMAT | BLOCK_FORCED))
|
|
|| (itemOptions))
|
|
{
|
|
rc = OPT_RC_INVALID;
|
|
printf("Error: Invalid options used for Control File dump.\n"
|
|
" Only options <Sf> may be used with <c>.\n");
|
|
exitCode = 1;
|
|
}
|
|
else
|
|
{
|
|
controlOptions |=
|
|
(blockOptions & (BLOCK_FORMAT | BLOCK_FORCED));
|
|
blockOptions = itemOptions = 0;
|
|
}
|
|
}
|
|
/* The user has requested a binary block dump... only -R and */
|
|
/* -f are honoured */
|
|
else if (blockOptions & BLOCK_BINARY)
|
|
{
|
|
blockOptions &= (BLOCK_BINARY | BLOCK_RANGE | BLOCK_FORCED);
|
|
itemOptions = 0;
|
|
}
|
|
/* The user has requested a non-interpreted dump... only -a, */
|
|
/* -R and -f are honoured */
|
|
else if (blockOptions & BLOCK_NO_INTR)
|
|
{
|
|
blockOptions &=
|
|
(BLOCK_NO_INTR | BLOCK_ABSOLUTE | BLOCK_RANGE | BLOCK_FORCED);
|
|
itemOptions = 0;
|
|
}
|
|
}
|
|
|
|
return (rc);
|
|
}
|
|
|
|
/* Given the index into the parameter list, convert and return the */
|
|
/* current string to a number if possible */
|
|
static int
|
|
GetOptionValue(char *optionString)
|
|
{
|
|
unsigned int x;
|
|
int value = -1;
|
|
int optionStringLength = strlen(optionString);
|
|
|
|
/* Verify the next option looks like a number */
|
|
for (x = 0; x < optionStringLength; x++)
|
|
if (!isdigit((int) optionString[x]))
|
|
break;
|
|
|
|
/* Convert the string to a number if it looks good */
|
|
if (x == optionStringLength)
|
|
value = atoi(optionString);
|
|
|
|
return (value);
|
|
}
|
|
|
|
/* Read the page header off of block 0 to determine the block size */
|
|
/* used in this file. Can be overridden using the -S option. The */
|
|
/* returned value is the block size of block 0 on disk */
|
|
static unsigned int
|
|
GetBlockSize()
|
|
{
|
|
unsigned int pageHeaderSize = sizeof(PageHeaderData);
|
|
unsigned int localSize = 0;
|
|
int bytesRead = 0;
|
|
char localCache[pageHeaderSize];
|
|
|
|
/* Read the first header off of block 0 to determine the block size */
|
|
bytesRead = fread(&localCache, 1, pageHeaderSize, fp);
|
|
rewind(fp);
|
|
|
|
if (bytesRead == pageHeaderSize)
|
|
localSize = (unsigned int) PageGetPageSize(&localCache);
|
|
else
|
|
{
|
|
printf("Error: Unable to read full page header from block 0.\n"
|
|
" ===> Read %u bytes\n", bytesRead);
|
|
exitCode = 1;
|
|
}
|
|
|
|
return (localSize);
|
|
}
|
|
|
|
/* Determine the contents of the special section on the block and */
|
|
/* return this enum value */
|
|
static unsigned int
|
|
GetSpecialSectionType(Page page)
|
|
{
|
|
unsigned int rc;
|
|
unsigned int specialOffset;
|
|
unsigned int specialSize;
|
|
unsigned int specialValue;
|
|
PageHeader pageHeader = (PageHeader) page;
|
|
|
|
/* If this is not a partial header, check the validity of the */
|
|
/* special section offset and contents */
|
|
if (bytesToFormat > sizeof(PageHeaderData))
|
|
{
|
|
specialOffset = (unsigned int) pageHeader->pd_special;
|
|
|
|
/* Check that the special offset can remain on the block or */
|
|
/* the partial block */
|
|
if ((specialOffset == 0) ||
|
|
(specialOffset > blockSize) || (specialOffset > bytesToFormat))
|
|
rc = SPEC_SECT_ERROR_BOUNDARY;
|
|
else
|
|
{
|
|
/* we may need to examine last 2 bytes of page to identify index */
|
|
uint16 *ptype = (uint16 *) (buffer + blockSize - sizeof(uint16));
|
|
|
|
specialSize = blockSize - specialOffset;
|
|
|
|
/* If there is a special section, use its size to guess its */
|
|
/* contents, checking the last 2 bytes of the page in cases */
|
|
/* that are ambiguous. Note we don't attempt to dereference */
|
|
/* the pointers without checking bytesToFormat == blockSize. */
|
|
if (specialSize == 0)
|
|
rc = SPEC_SECT_NONE;
|
|
else if (specialSize == MAXALIGN(sizeof(uint32)))
|
|
{
|
|
/* If MAXALIGN is 8, this could be either a sequence or */
|
|
/* SP-GiST or GIN. */
|
|
if (bytesToFormat == blockSize)
|
|
{
|
|
specialValue = *((int *) (buffer + specialOffset));
|
|
if (specialValue == SEQUENCE_MAGIC)
|
|
rc = SPEC_SECT_SEQUENCE;
|
|
else if (specialSize == MAXALIGN(sizeof(SpGistPageOpaqueData)) &&
|
|
*ptype == SPGIST_PAGE_ID)
|
|
rc = SPEC_SECT_INDEX_SPGIST;
|
|
else if (specialSize == MAXALIGN(sizeof(GinPageOpaqueData)))
|
|
rc = SPEC_SECT_INDEX_GIN;
|
|
else
|
|
rc = SPEC_SECT_ERROR_UNKNOWN;
|
|
}
|
|
else
|
|
rc = SPEC_SECT_ERROR_UNKNOWN;
|
|
}
|
|
/* SP-GiST and GIN have same size special section, so check */
|
|
/* the page ID bytes first. */
|
|
else if (specialSize == MAXALIGN(sizeof(SpGistPageOpaqueData)) &&
|
|
bytesToFormat == blockSize &&
|
|
*ptype == SPGIST_PAGE_ID)
|
|
rc = SPEC_SECT_INDEX_SPGIST;
|
|
else if (specialSize == MAXALIGN(sizeof(GinPageOpaqueData)))
|
|
rc = SPEC_SECT_INDEX_GIN;
|
|
else if (specialSize > 2 && bytesToFormat == blockSize)
|
|
{
|
|
/* As of 8.3, BTree, Hash, and GIST all have the same size */
|
|
/* special section, but the last two bytes of the section */
|
|
/* can be checked to determine what's what. */
|
|
if (*ptype <= MAX_BT_CYCLE_ID &&
|
|
specialSize == MAXALIGN(sizeof(BTPageOpaqueData)))
|
|
rc = SPEC_SECT_INDEX_BTREE;
|
|
else if (*ptype == HASHO_PAGE_ID &&
|
|
specialSize == MAXALIGN(sizeof(HashPageOpaqueData)))
|
|
rc = SPEC_SECT_INDEX_HASH;
|
|
else if (*ptype == GIST_PAGE_ID &&
|
|
specialSize == MAXALIGN(sizeof(GISTPageOpaqueData)))
|
|
rc = SPEC_SECT_INDEX_GIST;
|
|
else
|
|
rc = SPEC_SECT_ERROR_UNKNOWN;
|
|
}
|
|
else
|
|
rc = SPEC_SECT_ERROR_UNKNOWN;
|
|
}
|
|
}
|
|
else
|
|
rc = SPEC_SECT_ERROR_UNKNOWN;
|
|
|
|
return (rc);
|
|
}
|
|
|
|
/* Check whether page is a btree meta page */
|
|
static bool
|
|
IsBtreeMetaPage(Page page)
|
|
{
|
|
PageHeader pageHeader = (PageHeader) page;
|
|
|
|
if ((PageGetSpecialSize(page) == (MAXALIGN(sizeof(BTPageOpaqueData))))
|
|
&& (bytesToFormat == blockSize))
|
|
{
|
|
BTPageOpaque btpo =
|
|
(BTPageOpaque) ((char *) page + pageHeader->pd_special);
|
|
|
|
/* Must check the cycleid to be sure it's really btree. */
|
|
if ((btpo->btpo_cycleid <= MAX_BT_CYCLE_ID) &&
|
|
(btpo->btpo_flags & BTP_META))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/* Display a header for the dump so we know the file name, the options */
|
|
/* used and the time the dump was taken */
|
|
static void
|
|
CreateDumpFileHeader(int numOptions, char **options)
|
|
{
|
|
unsigned int x;
|
|
char optionBuffer[52] = "\0";
|
|
time_t rightNow = time(NULL);
|
|
|
|
/* Iterate through the options and cache them. */
|
|
/* The maximum we can display is 50 option characters + spaces. */
|
|
for (x = 1; x < (numOptions - 1); x++)
|
|
{
|
|
if ((strlen(optionBuffer) + strlen(options[x])) > 50)
|
|
break;
|
|
strcat(optionBuffer, options[x]);
|
|
strcat(optionBuffer, " ");
|
|
}
|
|
|
|
printf
|
|
("\n*******************************************************************\n"
|
|
"* PostgreSQL File/Block Formatted Dump Utility - Version %s\n"
|
|
"*\n"
|
|
"* File: %s\n"
|
|
"* Options used: %s\n*\n"
|
|
"* Dump created on: %s"
|
|
"*******************************************************************\n",
|
|
FD_VERSION, fileName, (strlen(optionBuffer)) ? optionBuffer : "None",
|
|
ctime(&rightNow));
|
|
}
|
|
|
|
/* Dump out a formatted block header for the requested block */
|
|
static int
|
|
FormatHeader(Page page, BlockNumber blkno)
|
|
{
|
|
int rc = 0;
|
|
unsigned int headerBytes;
|
|
PageHeader pageHeader = (PageHeader) page;
|
|
|
|
printf("<Header> -----\n");
|
|
|
|
/* Only attempt to format the header if the entire header (minus the item */
|
|
/* array) is available */
|
|
if (bytesToFormat < offsetof(PageHeaderData, pd_linp[0]))
|
|
{
|
|
headerBytes = bytesToFormat;
|
|
rc = EOF_ENCOUNTERED;
|
|
}
|
|
else
|
|
{
|
|
XLogRecPtr pageLSN = PageGetLSN(page);
|
|
int maxOffset = PageGetMaxOffsetNumber(page);
|
|
char flagString[100];
|
|
|
|
headerBytes = offsetof(PageHeaderData, pd_linp[0]);
|
|
blockVersion = (unsigned int) PageGetPageLayoutVersion(page);
|
|
|
|
/* The full header exists but we have to check that the item array */
|
|
/* is available or how far we can index into it */
|
|
if (maxOffset > 0)
|
|
{
|
|
unsigned int itemsLength = maxOffset * sizeof(ItemIdData);
|
|
|
|
if (bytesToFormat < (headerBytes + itemsLength))
|
|
{
|
|
headerBytes = bytesToFormat;
|
|
rc = EOF_ENCOUNTERED;
|
|
}
|
|
else
|
|
headerBytes += itemsLength;
|
|
}
|
|
|
|
flagString[0] = '\0';
|
|
if (pageHeader->pd_flags & PD_HAS_FREE_LINES)
|
|
strcat(flagString, "HAS_FREE_LINES|");
|
|
if (pageHeader->pd_flags & PD_PAGE_FULL)
|
|
strcat(flagString, "PAGE_FULL|");
|
|
if (pageHeader->pd_flags & PD_ALL_VISIBLE)
|
|
strcat(flagString, "ALL_VISIBLE|");
|
|
if (strlen(flagString))
|
|
flagString[strlen(flagString) - 1] = '\0';
|
|
|
|
/* Interpret the content of the header */
|
|
printf
|
|
(" Block Offset: 0x%08x Offsets: Lower %4u (0x%04hx)\n"
|
|
" Block: Size %4d Version %4u Upper %4u (0x%04hx)\n"
|
|
" LSN: logid %6d recoff 0x%08x Special %4u (0x%04hx)\n"
|
|
" Items: %4d Free Space: %4u\n"
|
|
" Checksum: 0x%04x Prune XID: 0x%08x Flags: 0x%04x (%s)\n"
|
|
" Length (including item array): %u\n\n",
|
|
pageOffset, pageHeader->pd_lower, pageHeader->pd_lower,
|
|
(int) PageGetPageSize(page), blockVersion,
|
|
pageHeader->pd_upper, pageHeader->pd_upper,
|
|
(uint32) (pageLSN >> 32), (uint32) pageLSN,
|
|
pageHeader->pd_special, pageHeader->pd_special,
|
|
maxOffset, pageHeader->pd_upper - pageHeader->pd_lower,
|
|
pageHeader->pd_checksum, pageHeader->pd_prune_xid,
|
|
pageHeader->pd_flags, flagString,
|
|
headerBytes);
|
|
|
|
/* If it's a btree meta page, print the contents of the meta block. */
|
|
if (IsBtreeMetaPage(page))
|
|
{
|
|
BTMetaPageData *btpMeta = BTPageGetMeta(buffer);
|
|
|
|
printf(" BTree Meta Data: Magic (0x%08x) Version (%u)\n"
|
|
" Root: Block (%u) Level (%u)\n"
|
|
" FastRoot: Block (%u) Level (%u)\n\n",
|
|
btpMeta->btm_magic, btpMeta->btm_version,
|
|
btpMeta->btm_root, btpMeta->btm_level,
|
|
btpMeta->btm_fastroot, btpMeta->btm_fastlevel);
|
|
headerBytes += sizeof(BTMetaPageData);
|
|
}
|
|
|
|
/* Eye the contents of the header and alert the user to possible */
|
|
/* problems. */
|
|
if ((maxOffset < 0) ||
|
|
(maxOffset > blockSize) ||
|
|
(blockVersion != PG_PAGE_LAYOUT_VERSION) || /* only one we support */
|
|
(pageHeader->pd_upper > blockSize) ||
|
|
(pageHeader->pd_upper > pageHeader->pd_special) ||
|
|
(pageHeader->pd_lower <
|
|
(sizeof(PageHeaderData) - sizeof(ItemIdData)))
|
|
|| (pageHeader->pd_lower > blockSize)
|
|
|| (pageHeader->pd_upper < pageHeader->pd_lower)
|
|
|| (pageHeader->pd_special > blockSize))
|
|
{
|
|
printf(" Error: Invalid header information.\n\n");
|
|
exitCode = 1;
|
|
}
|
|
|
|
if (blockOptions & BLOCK_CHECKSUMS)
|
|
{
|
|
uint32 delta = (segmentSize/blockSize)*segmentNumber;
|
|
uint16 calc_checksum = pg_checksum_page(page, delta + blkno);
|
|
|
|
if (calc_checksum != pageHeader->pd_checksum)
|
|
{
|
|
printf(" Error: checksum failure: calculated 0x%04x.\n\n",
|
|
calc_checksum);
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If we have reached the end of file while interpreting the header, let */
|
|
/* the user know about it */
|
|
if (rc == EOF_ENCOUNTERED)
|
|
{
|
|
printf
|
|
(" Error: End of block encountered within the header."
|
|
" Bytes read: %4u.\n\n", bytesToFormat);
|
|
exitCode = 1;
|
|
}
|
|
|
|
/* A request to dump the formatted binary of the block (header, */
|
|
/* items and special section). It's best to dump even on an error */
|
|
/* so the user can see the raw image. */
|
|
if (blockOptions & BLOCK_FORMAT)
|
|
FormatBinary(headerBytes, 0);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
/* Dump out formatted items that reside on this block */
|
|
static void
|
|
FormatItemBlock(Page page)
|
|
{
|
|
unsigned int x;
|
|
unsigned int itemSize;
|
|
unsigned int itemOffset;
|
|
unsigned int itemFlags;
|
|
ItemId itemId;
|
|
int maxOffset = PageGetMaxOffsetNumber(page);
|
|
|
|
/* If it's a btree meta page, the meta block is where items would normally */
|
|
/* be; don't print garbage. */
|
|
if (IsBtreeMetaPage(page))
|
|
return;
|
|
|
|
printf("<Data> ------ \n");
|
|
|
|
/* Loop through the items on the block. Check if the block is */
|
|
/* empty and has a sensible item array listed before running */
|
|
/* through each item */
|
|
if (maxOffset == 0)
|
|
printf(" Empty block - no items listed \n\n");
|
|
else if ((maxOffset < 0) || (maxOffset > blockSize))
|
|
{
|
|
printf(" Error: Item index corrupt on block. Offset: <%d>.\n\n",
|
|
maxOffset);
|
|
exitCode = 1;
|
|
}
|
|
else
|
|
{
|
|
int formatAs;
|
|
char textFlags[16];
|
|
|
|
/* First, honour requests to format items a special way, then */
|
|
/* use the special section to determine the format style */
|
|
if (itemOptions & ITEM_INDEX)
|
|
formatAs = ITEM_INDEX;
|
|
else if (itemOptions & ITEM_HEAP)
|
|
formatAs = ITEM_HEAP;
|
|
else
|
|
switch (specialType)
|
|
{
|
|
case SPEC_SECT_INDEX_BTREE:
|
|
case SPEC_SECT_INDEX_HASH:
|
|
case SPEC_SECT_INDEX_GIST:
|
|
case SPEC_SECT_INDEX_GIN:
|
|
formatAs = ITEM_INDEX;
|
|
break;
|
|
case SPEC_SECT_INDEX_SPGIST:
|
|
{
|
|
SpGistPageOpaque spgpo =
|
|
(SpGistPageOpaque) ((char *) page +
|
|
((PageHeader) page)->pd_special);
|
|
|
|
if (spgpo->flags & SPGIST_LEAF)
|
|
formatAs = ITEM_SPG_LEAF;
|
|
else
|
|
formatAs = ITEM_SPG_INNER;
|
|
}
|
|
break;
|
|
default:
|
|
formatAs = ITEM_HEAP;
|
|
break;
|
|
}
|
|
|
|
for (x = 1; x < (maxOffset + 1); x++)
|
|
{
|
|
itemId = PageGetItemId(page, x);
|
|
itemFlags = (unsigned int) ItemIdGetFlags(itemId);
|
|
itemSize = (unsigned int) ItemIdGetLength(itemId);
|
|
itemOffset = (unsigned int) ItemIdGetOffset(itemId);
|
|
|
|
switch (itemFlags)
|
|
{
|
|
case LP_UNUSED:
|
|
strcpy(textFlags, "UNUSED");
|
|
break;
|
|
case LP_NORMAL:
|
|
strcpy(textFlags, "NORMAL");
|
|
break;
|
|
case LP_REDIRECT:
|
|
strcpy(textFlags, "REDIRECT");
|
|
break;
|
|
case LP_DEAD:
|
|
strcpy(textFlags, "DEAD");
|
|
break;
|
|
default:
|
|
/* shouldn't be possible */
|
|
sprintf(textFlags, "0x%02x", itemFlags);
|
|
break;
|
|
}
|
|
|
|
printf(" Item %3u -- Length: %4u Offset: %4u (0x%04x)"
|
|
" Flags: %s\n", x, itemSize, itemOffset, itemOffset,
|
|
textFlags);
|
|
|
|
/* Make sure the item can physically fit on this block before */
|
|
/* formatting */
|
|
if ((itemOffset + itemSize > blockSize) ||
|
|
(itemOffset + itemSize > bytesToFormat))
|
|
{
|
|
printf(" Error: Item contents extend beyond block.\n"
|
|
" BlockSize<%d> Bytes Read<%d> Item Start<%d>.\n",
|
|
blockSize, bytesToFormat, itemOffset + itemSize);
|
|
exitCode = 1;
|
|
}
|
|
else
|
|
{
|
|
/* If the user requests that the items be interpreted as */
|
|
/* heap or index items... */
|
|
if (itemOptions & ITEM_DETAIL)
|
|
FormatItem(itemSize, itemOffset, formatAs);
|
|
|
|
/* Dump the items contents in hex and ascii */
|
|
if (blockOptions & BLOCK_FORMAT)
|
|
FormatBinary(itemSize, itemOffset);
|
|
|
|
/* Decode tuple data */
|
|
if(blockOptions & BLOCK_DECODE)
|
|
FormatDecode(&buffer[itemOffset], itemSize);
|
|
|
|
if (x == maxOffset)
|
|
printf("\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Interpret the contents of the item based on whether it has a special */
|
|
/* section and/or the user has hinted */
|
|
static void
|
|
FormatItem(unsigned int numBytes, unsigned int startIndex,
|
|
unsigned int formatAs)
|
|
{
|
|
static const char *const spgist_tupstates[4] = {
|
|
"LIVE",
|
|
"REDIRECT",
|
|
"DEAD",
|
|
"PLACEHOLDER"
|
|
};
|
|
|
|
if (formatAs == ITEM_INDEX)
|
|
{
|
|
/* It is an IndexTuple item, so dump the index header */
|
|
if (numBytes < sizeof(ItemPointerData))
|
|
{
|
|
if (numBytes)
|
|
{
|
|
printf(" Error: This item does not look like an index item.\n");
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
IndexTuple itup = (IndexTuple) (&(buffer[startIndex]));
|
|
|
|
printf(" Block Id: %u linp Index: %u Size: %d\n"
|
|
" Has Nulls: %u Has Varwidths: %u\n\n",
|
|
((uint32) ((itup->t_tid.ip_blkid.bi_hi << 16) |
|
|
(uint16) itup->t_tid.ip_blkid.bi_lo)),
|
|
itup->t_tid.ip_posid,
|
|
(int) IndexTupleSize(itup),
|
|
IndexTupleHasNulls(itup) ? 1 : 0,
|
|
IndexTupleHasVarwidths(itup) ? 1 : 0);
|
|
|
|
if (numBytes != IndexTupleSize(itup))
|
|
{
|
|
printf(" Error: Item size difference. Given <%u>, "
|
|
"Internal <%d>.\n", numBytes, (int) IndexTupleSize(itup));
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
}
|
|
else if (formatAs == ITEM_SPG_INNER)
|
|
{
|
|
/* It is an SpGistInnerTuple item, so dump the index header */
|
|
if (numBytes < SGITHDRSZ)
|
|
{
|
|
if (numBytes)
|
|
{
|
|
printf(" Error: This item does not look like an SPGiST item.\n");
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SpGistInnerTuple itup = (SpGistInnerTuple) (&(buffer[startIndex]));
|
|
|
|
printf(" State: %s allTheSame: %d nNodes: %u prefixSize: %u\n\n",
|
|
spgist_tupstates[itup->tupstate],
|
|
itup->allTheSame,
|
|
itup->nNodes,
|
|
itup->prefixSize);
|
|
|
|
if (numBytes != itup->size)
|
|
{
|
|
printf(" Error: Item size difference. Given <%u>, "
|
|
"Internal <%d>.\n", numBytes, (int) itup->size);
|
|
exitCode = 1;
|
|
}
|
|
else if (itup->prefixSize == MAXALIGN(itup->prefixSize))
|
|
{
|
|
int i;
|
|
SpGistNodeTuple node;
|
|
|
|
/* Dump the prefix contents in hex and ascii */
|
|
if ((blockOptions & BLOCK_FORMAT) &&
|
|
SGITHDRSZ + itup->prefixSize <= numBytes)
|
|
FormatBinary(SGITHDRSZ + itup->prefixSize, startIndex);
|
|
|
|
/* Try to print the nodes, but only while pointer is sane */
|
|
SGITITERATE(itup, i, node)
|
|
{
|
|
int off = (char *) node - (char *) itup;
|
|
|
|
if (off + SGNTHDRSZ > numBytes)
|
|
break;
|
|
printf(" Node %2u: Downlink: %u/%u Size: %d Null: %u\n",
|
|
i,
|
|
((uint32) ((node->t_tid.ip_blkid.bi_hi << 16) |
|
|
(uint16) node->t_tid.ip_blkid.bi_lo)),
|
|
node->t_tid.ip_posid,
|
|
(int) IndexTupleSize(node),
|
|
IndexTupleHasNulls(node) ? 1 : 0);
|
|
/* Dump the node's contents in hex and ascii */
|
|
if ((blockOptions & BLOCK_FORMAT) &&
|
|
off + IndexTupleSize(node) <= numBytes)
|
|
FormatBinary(IndexTupleSize(node), startIndex + off);
|
|
if (IndexTupleSize(node) != MAXALIGN(IndexTupleSize(node)))
|
|
break;
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
else if (formatAs == ITEM_SPG_LEAF)
|
|
{
|
|
/* It is an SpGistLeafTuple item, so dump the index header */
|
|
if (numBytes < SGLTHDRSZ)
|
|
{
|
|
if (numBytes)
|
|
{
|
|
printf(" Error: This item does not look like an SPGiST item.\n");
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SpGistLeafTuple itup = (SpGistLeafTuple) (&(buffer[startIndex]));
|
|
|
|
printf(" State: %s nextOffset: %u Block Id: %u linp Index: %u\n\n",
|
|
spgist_tupstates[itup->tupstate],
|
|
itup->nextOffset,
|
|
((uint32) ((itup->heapPtr.ip_blkid.bi_hi << 16) |
|
|
(uint16) itup->heapPtr.ip_blkid.bi_lo)),
|
|
itup->heapPtr.ip_posid);
|
|
|
|
if (numBytes != itup->size)
|
|
{
|
|
printf(" Error: Item size difference. Given <%u>, "
|
|
"Internal <%d>.\n", numBytes, (int) itup->size);
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* It is a HeapTuple item, so dump the heap header */
|
|
int alignedSize = MAXALIGN(sizeof(HeapTupleHeaderData));
|
|
|
|
if (numBytes < alignedSize)
|
|
{
|
|
if (numBytes)
|
|
{
|
|
printf(" Error: This item does not look like a heap item.\n");
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
char flagString[256];
|
|
unsigned int x;
|
|
unsigned int bitmapLength = 0;
|
|
unsigned int oidLength = 0;
|
|
unsigned int computedLength;
|
|
unsigned int infoMask;
|
|
unsigned int infoMask2;
|
|
int localNatts;
|
|
unsigned int localHoff;
|
|
bits8 *localBits;
|
|
unsigned int localBitOffset;
|
|
|
|
HeapTupleHeader htup = (HeapTupleHeader) (&buffer[startIndex]);
|
|
|
|
infoMask = htup->t_infomask;
|
|
infoMask2 = htup->t_infomask2;
|
|
localBits = &(htup->t_bits[0]);
|
|
localNatts = HeapTupleHeaderGetNatts(htup);
|
|
localHoff = htup->t_hoff;
|
|
localBitOffset = offsetof(HeapTupleHeaderData, t_bits);
|
|
|
|
printf(" XMIN: %u XMAX: %u CID|XVAC: %u",
|
|
HeapTupleHeaderGetXmin(htup),
|
|
HeapTupleHeaderGetRawXmax(htup),
|
|
HeapTupleHeaderGetRawCommandId(htup));
|
|
|
|
if (infoMask & HEAP_HASOID)
|
|
printf(" OID: %u",
|
|
HeapTupleHeaderGetOid(htup));
|
|
|
|
printf("\n"
|
|
" Block Id: %u linp Index: %u Attributes: %d Size: %d\n",
|
|
((uint32)
|
|
((htup->t_ctid.ip_blkid.bi_hi << 16) | (uint16) htup->
|
|
t_ctid.ip_blkid.bi_lo)), htup->t_ctid.ip_posid,
|
|
localNatts, htup->t_hoff);
|
|
|
|
/* Place readable versions of the tuple info mask into a buffer. */
|
|
/* Assume that the string can not expand beyond 256. */
|
|
flagString[0] = '\0';
|
|
if (infoMask & HEAP_HASNULL)
|
|
strcat(flagString, "HASNULL|");
|
|
if (infoMask & HEAP_HASVARWIDTH)
|
|
strcat(flagString, "HASVARWIDTH|");
|
|
if (infoMask & HEAP_HASEXTERNAL)
|
|
strcat(flagString, "HASEXTERNAL|");
|
|
if (infoMask & HEAP_HASOID)
|
|
strcat(flagString, "HASOID|");
|
|
if (infoMask & HEAP_XMAX_KEYSHR_LOCK)
|
|
strcat(flagString, "XMAX_KEYSHR_LOCK|");
|
|
if (infoMask & HEAP_COMBOCID)
|
|
strcat(flagString, "COMBOCID|");
|
|
if (infoMask & HEAP_XMAX_EXCL_LOCK)
|
|
strcat(flagString, "XMAX_EXCL_LOCK|");
|
|
if (infoMask & HEAP_XMAX_LOCK_ONLY)
|
|
strcat(flagString, "XMAX_LOCK_ONLY|");
|
|
if (infoMask & HEAP_XMIN_COMMITTED)
|
|
strcat(flagString, "XMIN_COMMITTED|");
|
|
if (infoMask & HEAP_XMIN_INVALID)
|
|
strcat(flagString, "XMIN_INVALID|");
|
|
if (infoMask & HEAP_XMAX_COMMITTED)
|
|
strcat(flagString, "XMAX_COMMITTED|");
|
|
if (infoMask & HEAP_XMAX_INVALID)
|
|
strcat(flagString, "XMAX_INVALID|");
|
|
if (infoMask & HEAP_XMAX_IS_MULTI)
|
|
strcat(flagString, "XMAX_IS_MULTI|");
|
|
if (infoMask & HEAP_UPDATED)
|
|
strcat(flagString, "UPDATED|");
|
|
if (infoMask & HEAP_MOVED_OFF)
|
|
strcat(flagString, "MOVED_OFF|");
|
|
if (infoMask & HEAP_MOVED_IN)
|
|
strcat(flagString, "MOVED_IN|");
|
|
|
|
if (infoMask2 & HEAP_KEYS_UPDATED)
|
|
strcat(flagString, "KEYS_UPDATED|");
|
|
if (infoMask2 & HEAP_HOT_UPDATED)
|
|
strcat(flagString, "HOT_UPDATED|");
|
|
if (infoMask2 & HEAP_ONLY_TUPLE)
|
|
strcat(flagString, "HEAP_ONLY|");
|
|
|
|
if (strlen(flagString))
|
|
flagString[strlen(flagString) - 1] = '\0';
|
|
|
|
printf(" infomask: 0x%04x (%s) \n", infoMask, flagString);
|
|
|
|
/* As t_bits is a variable length array, determine the length of */
|
|
/* the header proper */
|
|
if (infoMask & HEAP_HASNULL)
|
|
bitmapLength = BITMAPLEN(localNatts);
|
|
else
|
|
bitmapLength = 0;
|
|
|
|
if (infoMask & HEAP_HASOID)
|
|
oidLength += sizeof(Oid);
|
|
|
|
computedLength =
|
|
MAXALIGN(localBitOffset + bitmapLength + oidLength);
|
|
|
|
/*
|
|
* Inform the user of a header size mismatch or dump the t_bits
|
|
* array
|
|
*/
|
|
if (computedLength != localHoff)
|
|
{
|
|
printf
|
|
(" Error: Computed header length not equal to header size.\n"
|
|
" Computed <%u> Header: <%d>\n", computedLength,
|
|
localHoff);
|
|
|
|
exitCode = 1;
|
|
}
|
|
else if ((infoMask & HEAP_HASNULL) && bitmapLength)
|
|
{
|
|
printf(" t_bits: ");
|
|
for (x = 0; x < bitmapLength; x++)
|
|
{
|
|
printf("[%u]: 0x%02x ", x, localBits[x]);
|
|
if (((x & 0x03) == 0x03) && (x < bitmapLength - 1))
|
|
printf("\n ");
|
|
}
|
|
printf("\n");
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* On blocks that have special sections, print the contents */
|
|
/* according to previously determined special section type */
|
|
static void
|
|
FormatSpecial()
|
|
{
|
|
PageHeader pageHeader = (PageHeader) buffer;
|
|
char flagString[100] = "\0";
|
|
unsigned int specialOffset = pageHeader->pd_special;
|
|
unsigned int specialSize =
|
|
(blockSize >= specialOffset) ? (blockSize - specialOffset) : 0;
|
|
|
|
printf("<Special Section> -----\n");
|
|
|
|
switch (specialType)
|
|
{
|
|
case SPEC_SECT_ERROR_UNKNOWN:
|
|
case SPEC_SECT_ERROR_BOUNDARY:
|
|
printf(" Error: Invalid special section encountered.\n");
|
|
exitCode = 1;
|
|
break;
|
|
|
|
case SPEC_SECT_SEQUENCE:
|
|
printf(" Sequence: 0x%08x\n", SEQUENCE_MAGIC);
|
|
break;
|
|
|
|
/* Btree index section */
|
|
case SPEC_SECT_INDEX_BTREE:
|
|
{
|
|
BTPageOpaque btreeSection = (BTPageOpaque) (buffer + specialOffset);
|
|
|
|
if (btreeSection->btpo_flags & BTP_LEAF)
|
|
strcat(flagString, "LEAF|");
|
|
if (btreeSection->btpo_flags & BTP_ROOT)
|
|
strcat(flagString, "ROOT|");
|
|
if (btreeSection->btpo_flags & BTP_DELETED)
|
|
strcat(flagString, "DELETED|");
|
|
if (btreeSection->btpo_flags & BTP_META)
|
|
strcat(flagString, "META|");
|
|
if (btreeSection->btpo_flags & BTP_HALF_DEAD)
|
|
strcat(flagString, "HALFDEAD|");
|
|
if (btreeSection->btpo_flags & BTP_SPLIT_END)
|
|
strcat(flagString, "SPLITEND|");
|
|
if (btreeSection->btpo_flags & BTP_HAS_GARBAGE)
|
|
strcat(flagString, "HASGARBAGE|");
|
|
if (btreeSection->btpo_flags & BTP_INCOMPLETE_SPLIT)
|
|
strcat(flagString, "INCOMPLETESPLIT|");
|
|
if (strlen(flagString))
|
|
flagString[strlen(flagString) - 1] = '\0';
|
|
|
|
printf(" BTree Index Section:\n"
|
|
" Flags: 0x%04x (%s)\n"
|
|
" Blocks: Previous (%d) Next (%d) %s (%d) CycleId (%d)\n\n",
|
|
btreeSection->btpo_flags, flagString,
|
|
btreeSection->btpo_prev, btreeSection->btpo_next,
|
|
(btreeSection->
|
|
btpo_flags & BTP_DELETED) ? "Next XID" : "Level",
|
|
btreeSection->btpo.level,
|
|
btreeSection->btpo_cycleid);
|
|
}
|
|
break;
|
|
|
|
/* Hash index section */
|
|
case SPEC_SECT_INDEX_HASH:
|
|
{
|
|
HashPageOpaque hashSection = (HashPageOpaque) (buffer + specialOffset);
|
|
|
|
if (hashSection->hasho_flag & LH_UNUSED_PAGE)
|
|
strcat(flagString, "UNUSED|");
|
|
if (hashSection->hasho_flag & LH_OVERFLOW_PAGE)
|
|
strcat(flagString, "OVERFLOW|");
|
|
if (hashSection->hasho_flag & LH_BUCKET_PAGE)
|
|
strcat(flagString, "BUCKET|");
|
|
if (hashSection->hasho_flag & LH_BITMAP_PAGE)
|
|
strcat(flagString, "BITMAP|");
|
|
if (hashSection->hasho_flag & LH_META_PAGE)
|
|
strcat(flagString, "META|");
|
|
if (strlen(flagString))
|
|
flagString[strlen(flagString) - 1] = '\0';
|
|
printf(" Hash Index Section:\n"
|
|
" Flags: 0x%04x (%s)\n"
|
|
" Bucket Number: 0x%04x\n"
|
|
" Blocks: Previous (%d) Next (%d)\n\n",
|
|
hashSection->hasho_flag, flagString,
|
|
hashSection->hasho_bucket,
|
|
hashSection->hasho_prevblkno, hashSection->hasho_nextblkno);
|
|
}
|
|
break;
|
|
|
|
/* GIST index section */
|
|
case SPEC_SECT_INDEX_GIST:
|
|
{
|
|
GISTPageOpaque gistSection = (GISTPageOpaque) (buffer + specialOffset);
|
|
|
|
if (gistSection->flags & F_LEAF)
|
|
strcat(flagString, "LEAF|");
|
|
if (gistSection->flags & F_DELETED)
|
|
strcat(flagString, "DELETED|");
|
|
if (gistSection->flags & F_TUPLES_DELETED)
|
|
strcat(flagString, "TUPLES_DELETED|");
|
|
if (gistSection->flags & F_FOLLOW_RIGHT)
|
|
strcat(flagString, "FOLLOW_RIGHT|");
|
|
if (strlen(flagString))
|
|
flagString[strlen(flagString) - 1] = '\0';
|
|
printf(" GIST Index Section:\n"
|
|
" NSN: 0x%08x/0x%08x\n"
|
|
" RightLink: %d\n"
|
|
" Flags: 0x%08x (%s)\n\n",
|
|
gistSection->nsn.xlogid, gistSection->nsn.xrecoff,
|
|
gistSection->rightlink,
|
|
gistSection->flags, flagString);
|
|
}
|
|
break;
|
|
|
|
/* GIN index section */
|
|
case SPEC_SECT_INDEX_GIN:
|
|
{
|
|
GinPageOpaque ginSection = (GinPageOpaque) (buffer + specialOffset);
|
|
|
|
if (ginSection->flags & GIN_DATA)
|
|
strcat(flagString, "DATA|");
|
|
if (ginSection->flags & GIN_LEAF)
|
|
strcat(flagString, "LEAF|");
|
|
if (ginSection->flags & GIN_DELETED)
|
|
strcat(flagString, "DELETED|");
|
|
if (ginSection->flags & GIN_META)
|
|
strcat(flagString, "META|");
|
|
if (ginSection->flags & GIN_LIST)
|
|
strcat(flagString, "LIST|");
|
|
if (ginSection->flags & GIN_LIST_FULLROW)
|
|
strcat(flagString, "FULLROW|");
|
|
if (ginSection->flags & GIN_INCOMPLETE_SPLIT)
|
|
strcat(flagString, "INCOMPLETESPLIT|");
|
|
if (ginSection->flags & GIN_COMPRESSED)
|
|
strcat(flagString, "COMPRESSED|");
|
|
if (strlen(flagString))
|
|
flagString[strlen(flagString) - 1] = '\0';
|
|
printf(" GIN Index Section:\n"
|
|
" Flags: 0x%08x (%s) Maxoff: %d\n"
|
|
" Blocks: RightLink (%d)\n\n",
|
|
ginSection->flags, flagString,
|
|
ginSection->maxoff,
|
|
ginSection->rightlink);
|
|
}
|
|
break;
|
|
|
|
/* SP-GIST index section */
|
|
case SPEC_SECT_INDEX_SPGIST:
|
|
{
|
|
SpGistPageOpaque spgistSection = (SpGistPageOpaque) (buffer + specialOffset);
|
|
|
|
if (spgistSection->flags & SPGIST_META)
|
|
strcat(flagString, "META|");
|
|
if (spgistSection->flags & SPGIST_DELETED)
|
|
strcat(flagString, "DELETED|");
|
|
if (spgistSection->flags & SPGIST_LEAF)
|
|
strcat(flagString, "LEAF|");
|
|
if (spgistSection->flags & SPGIST_NULLS)
|
|
strcat(flagString, "NULLS|");
|
|
if (strlen(flagString))
|
|
flagString[strlen(flagString) - 1] = '\0';
|
|
printf(" SPGIST Index Section:\n"
|
|
" Flags: 0x%08x (%s)\n"
|
|
" nRedirection: %d\n"
|
|
" nPlaceholder: %d\n\n",
|
|
spgistSection->flags, flagString,
|
|
spgistSection->nRedirection,
|
|
spgistSection->nPlaceholder);
|
|
}
|
|
break;
|
|
|
|
/* No idea what type of special section this is */
|
|
default:
|
|
printf(" Unknown special section type. Type: <%u>.\n", specialType);
|
|
exitCode = 1;
|
|
break;
|
|
}
|
|
|
|
/* Dump the formatted contents of the special section */
|
|
if (blockOptions & BLOCK_FORMAT)
|
|
{
|
|
if (specialType == SPEC_SECT_ERROR_BOUNDARY)
|
|
{
|
|
printf(" Error: Special section points off page."
|
|
" Unable to dump contents.\n");
|
|
|
|
exitCode = 1;
|
|
}
|
|
else
|
|
FormatBinary(specialSize, specialOffset);
|
|
}
|
|
}
|
|
|
|
/* For each block, dump out formatted header and content information */
|
|
static void
|
|
FormatBlock(BlockNumber blkno)
|
|
{
|
|
Page page = (Page) buffer;
|
|
|
|
pageOffset = blockSize * currentBlock;
|
|
specialType = GetSpecialSectionType(page);
|
|
|
|
printf("\nBlock %4u **%s***************************************\n",
|
|
currentBlock,
|
|
(bytesToFormat ==
|
|
blockSize) ? "***************" : " PARTIAL BLOCK ");
|
|
|
|
/* Either dump out the entire block in hex+acsii fashion or */
|
|
/* interpret the data based on block structure */
|
|
if (blockOptions & BLOCK_NO_INTR)
|
|
FormatBinary(bytesToFormat, 0);
|
|
else
|
|
{
|
|
int rc;
|
|
|
|
/* Every block contains a header, items and possibly a special */
|
|
/* section. Beware of partial block reads though */
|
|
rc = FormatHeader(page, blkno);
|
|
|
|
/* If we didn't encounter a partial read in the header, carry on... */
|
|
if (rc != EOF_ENCOUNTERED)
|
|
{
|
|
FormatItemBlock(page);
|
|
|
|
if (specialType != SPEC_SECT_NONE)
|
|
FormatSpecial();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Dump out the content of the PG control file */
|
|
static void
|
|
FormatControl()
|
|
{
|
|
unsigned int localPgVersion = 0;
|
|
unsigned int controlFileSize = 0;
|
|
time_t cd_time;
|
|
time_t cp_time;
|
|
|
|
printf
|
|
("\n<pg_control Contents> *********************************************\n\n");
|
|
|
|
/* Check the version */
|
|
if (bytesToFormat >= offsetof(ControlFileData, catalog_version_no))
|
|
localPgVersion = ((ControlFileData *) buffer)->pg_control_version;
|
|
|
|
if (localPgVersion >= 72)
|
|
controlFileSize = sizeof(ControlFileData);
|
|
else
|
|
{
|
|
printf("pg_filedump: pg_control version %u not supported.\n",
|
|
localPgVersion);
|
|
return;
|
|
}
|
|
|
|
/* Interpret the control file if it's all there */
|
|
if (bytesToFormat >= controlFileSize)
|
|
{
|
|
ControlFileData *controlData = (ControlFileData *) buffer;
|
|
CheckPoint *checkPoint = &(controlData->checkPointCopy);
|
|
pg_crc32 crcLocal;
|
|
char *dbState;
|
|
|
|
/* Compute a local copy of the CRC to verify the one on disk */
|
|
INIT_CRC32C(crcLocal);
|
|
COMP_CRC32C(crcLocal, buffer, offsetof(ControlFileData, crc));
|
|
FIN_CRC32C(crcLocal);
|
|
|
|
/* Grab a readable version of the database state */
|
|
switch (controlData->state)
|
|
{
|
|
case DB_STARTUP:
|
|
dbState = "STARTUP";
|
|
break;
|
|
case DB_SHUTDOWNED:
|
|
dbState = "SHUTDOWNED";
|
|
break;
|
|
case DB_SHUTDOWNED_IN_RECOVERY:
|
|
dbState = "SHUTDOWNED_IN_RECOVERY";
|
|
break;
|
|
case DB_SHUTDOWNING:
|
|
dbState = "SHUTDOWNING";
|
|
break;
|
|
case DB_IN_CRASH_RECOVERY:
|
|
dbState = "IN CRASH RECOVERY";
|
|
break;
|
|
case DB_IN_ARCHIVE_RECOVERY:
|
|
dbState = "IN ARCHIVE RECOVERY";
|
|
break;
|
|
case DB_IN_PRODUCTION:
|
|
dbState = "IN PRODUCTION";
|
|
break;
|
|
default:
|
|
dbState = "UNKNOWN";
|
|
break;
|
|
}
|
|
|
|
/* convert timestamps to system's time_t width */
|
|
cd_time = controlData->time;
|
|
cp_time = checkPoint->time;
|
|
|
|
printf(" CRC: %s\n"
|
|
" pg_control Version: %u%s\n"
|
|
" Catalog Version: %u\n"
|
|
" System Identifier: " UINT64_FORMAT "\n"
|
|
" State: %s\n"
|
|
" Last Mod Time: %s"
|
|
" Last Checkpoint Record: Log File (%u) Offset (0x%08x)\n"
|
|
" Previous Checkpoint Record: Log File (%u) Offset (0x%08x)\n"
|
|
" Last Checkpoint Record Redo: Log File (%u) Offset (0x%08x)\n"
|
|
" |- TimeLineID: %u\n"
|
|
" |- Next XID: %u/%u\n"
|
|
" |- Next OID: %u\n"
|
|
" |- Next Multi: %u\n"
|
|
" |- Next MultiOff: %u\n"
|
|
" |- Time: %s"
|
|
" Minimum Recovery Point: Log File (%u) Offset (0x%08x)\n"
|
|
" Maximum Data Alignment: %u\n"
|
|
" Floating-Point Sample: %.7g%s\n"
|
|
" Database Block Size: %u\n"
|
|
" Blocks Per Segment: %u\n"
|
|
" XLOG Block Size: %u\n"
|
|
" XLOG Segment Size: %u\n"
|
|
" Maximum Identifier Length: %u\n"
|
|
" Maximum Index Keys: %u\n"
|
|
" TOAST Chunk Size: %u\n"
|
|
" Date and Time Type Storage: %s\n\n",
|
|
EQ_CRC32C(crcLocal,
|
|
controlData->crc) ? "Correct" : "Not Correct",
|
|
controlData->pg_control_version,
|
|
(controlData->pg_control_version == PG_CONTROL_VERSION ?
|
|
"" : " (Not Correct!)"),
|
|
controlData->catalog_version_no,
|
|
controlData->system_identifier,
|
|
dbState,
|
|
ctime(&(cd_time)),
|
|
(uint32) (controlData->checkPoint >> 32), (uint32) controlData->checkPoint,
|
|
(uint32) (controlData->prevCheckPoint >> 32), (uint32) controlData->prevCheckPoint,
|
|
(uint32) (checkPoint->redo >> 32), (uint32) checkPoint->redo,
|
|
checkPoint->ThisTimeLineID,
|
|
checkPoint->nextXidEpoch, checkPoint->nextXid,
|
|
checkPoint->nextOid,
|
|
checkPoint->nextMulti, checkPoint->nextMultiOffset,
|
|
ctime(&cp_time),
|
|
(uint32) (controlData->minRecoveryPoint >> 32), (uint32) controlData->minRecoveryPoint,
|
|
controlData->maxAlign,
|
|
controlData->floatFormat,
|
|
(controlData->floatFormat == FLOATFORMAT_VALUE ?
|
|
"" : " (Not Correct!)"),
|
|
controlData->blcksz,
|
|
controlData->relseg_size,
|
|
controlData->xlog_blcksz,
|
|
controlData->xlog_seg_size,
|
|
controlData->nameDataLen,
|
|
controlData->indexMaxKeys,
|
|
controlData->toast_max_chunk_size,
|
|
(controlData->enableIntTimes ?
|
|
"64 bit Integers" : "Floating Point"));
|
|
}
|
|
else
|
|
{
|
|
printf(" Error: pg_control file size incorrect.\n"
|
|
" Size: Correct <%u> Received <%u>.\n\n",
|
|
controlFileSize, bytesToFormat);
|
|
|
|
/* If we have an error, force a formatted dump so we can see */
|
|
/* where things are going wrong */
|
|
controlOptions |= CONTROL_FORMAT;
|
|
|
|
exitCode = 1;
|
|
}
|
|
|
|
/* Dump hex and ascii representation of data */
|
|
if (controlOptions & CONTROL_FORMAT)
|
|
{
|
|
printf("<pg_control Formatted Dump> *****************"
|
|
"**********************\n\n");
|
|
FormatBinary(bytesToFormat, 0);
|
|
}
|
|
}
|
|
|
|
/* Dump out the contents of the block in hex and ascii. */
|
|
/* BYTES_PER_LINE bytes are formatted in each line. */
|
|
static void
|
|
FormatBinary(unsigned int numBytes, unsigned int startIndex)
|
|
{
|
|
unsigned int index = 0;
|
|
unsigned int stopIndex = 0;
|
|
unsigned int x = 0;
|
|
unsigned int lastByte = startIndex + numBytes;
|
|
|
|
if (numBytes)
|
|
{
|
|
/* Iterate through a printable row detailing the current */
|
|
/* address, the hex and ascii values */
|
|
for (index = startIndex; index < lastByte; index += BYTES_PER_LINE)
|
|
{
|
|
stopIndex = index + BYTES_PER_LINE;
|
|
|
|
/* Print out the address */
|
|
if (blockOptions & BLOCK_ABSOLUTE)
|
|
printf(" %08x: ", (unsigned int) (pageOffset + index));
|
|
else
|
|
printf(" %04x: ", (unsigned int) index);
|
|
|
|
/* Print out the hex version of the data */
|
|
for (x = index; x < stopIndex; x++)
|
|
{
|
|
if (x < lastByte)
|
|
printf("%02x", 0xff & ((unsigned) buffer[x]));
|
|
else
|
|
printf(" ");
|
|
if ((x & 0x03) == 0x03)
|
|
printf(" ");
|
|
}
|
|
printf(" ");
|
|
|
|
/* Print out the ascii version of the data */
|
|
for (x = index; x < stopIndex; x++)
|
|
{
|
|
if (x < lastByte)
|
|
printf("%c", isprint(buffer[x]) ? buffer[x] : '.');
|
|
else
|
|
printf(" ");
|
|
}
|
|
printf("\n");
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
/* Dump the binary image of the block */
|
|
static void
|
|
DumpBinaryBlock()
|
|
{
|
|
unsigned int x;
|
|
|
|
for (x = 0; x < bytesToFormat; x++)
|
|
putchar(buffer[x]);
|
|
}
|
|
|
|
/* Control the dumping of the blocks within the file */
|
|
static void
|
|
DumpFileContents()
|
|
{
|
|
unsigned int initialRead = 1;
|
|
unsigned int contentsToDump = 1;
|
|
|
|
/* If the user requested a block range, seek to the correct position */
|
|
/* within the file for the start block. */
|
|
if (blockOptions & BLOCK_RANGE)
|
|
{
|
|
unsigned int position = blockSize * blockStart;
|
|
|
|
if (fseek(fp, position, SEEK_SET) != 0)
|
|
{
|
|
printf("Error: Seek error encountered before requested "
|
|
"start block <%d>.\n", blockStart);
|
|
contentsToDump = 0;
|
|
exitCode = 1;
|
|
}
|
|
else
|
|
currentBlock = blockStart;
|
|
}
|
|
|
|
/* Iterate through the blocks in the file until you reach the end or */
|
|
/* the requested range end */
|
|
while (contentsToDump)
|
|
{
|
|
bytesToFormat = fread(buffer, 1, blockSize, fp);
|
|
|
|
if (bytesToFormat == 0)
|
|
{
|
|
/* fseek() won't pop an error if you seek passed eof. The next */
|
|
/* subsequent read gets the error. */
|
|
if (initialRead)
|
|
printf("Error: Premature end of file encountered.\n");
|
|
else if (!(blockOptions & BLOCK_BINARY))
|
|
printf("\n*** End of File Encountered. Last Block "
|
|
"Read: %d ***\n", currentBlock - 1);
|
|
|
|
contentsToDump = 0;
|
|
}
|
|
else
|
|
{
|
|
if (blockOptions & BLOCK_BINARY)
|
|
DumpBinaryBlock();
|
|
else
|
|
{
|
|
if (controlOptions & CONTROL_DUMP)
|
|
{
|
|
FormatControl();
|
|
contentsToDump = false;
|
|
}
|
|
else
|
|
FormatBlock(currentBlock);
|
|
}
|
|
}
|
|
|
|
/* Check to see if we are at the end of the requested range. */
|
|
if ((blockOptions & BLOCK_RANGE) &&
|
|
(currentBlock >= blockEnd) && (contentsToDump))
|
|
{
|
|
/* Don't print out message if we're doing a binary dump */
|
|
if (!(blockOptions & BLOCK_BINARY))
|
|
printf("\n*** End of Requested Range Encountered. "
|
|
"Last Block Read: %d ***\n", currentBlock);
|
|
contentsToDump = 0;
|
|
}
|
|
else
|
|
currentBlock++;
|
|
|
|
initialRead = 0;
|
|
}
|
|
}
|
|
|
|
/* Consume the options and iterate through the given file, formatting as */
|
|
/* requested. */
|
|
int
|
|
main(int argv, char **argc)
|
|
{
|
|
/* If there is a parameter list, validate the options */
|
|
unsigned int validOptions;
|
|
|
|
validOptions = (argv < 2) ? OPT_RC_COPYRIGHT : ConsumeOptions(argv, argc);
|
|
|
|
/* Display valid options if no parameters are received or invalid options */
|
|
/* where encountered */
|
|
if (validOptions != OPT_RC_VALID)
|
|
DisplayOptions(validOptions);
|
|
else
|
|
{
|
|
/* Don't dump the header if we're dumping binary pages */
|
|
if (!(blockOptions & BLOCK_BINARY))
|
|
CreateDumpFileHeader(argv, argc);
|
|
|
|
/* If the user has not forced a block size, use the size of the */
|
|
/* control file data or the information from the block 0 header */
|
|
if (controlOptions)
|
|
{
|
|
if (!(controlOptions & CONTROL_FORCED))
|
|
blockSize = sizeof(ControlFileData);
|
|
}
|
|
else if (!(blockOptions & BLOCK_FORCED))
|
|
blockSize = GetBlockSize();
|
|
|
|
/* On a positive block size, allocate a local buffer to store */
|
|
/* the subsequent blocks */
|
|
if (blockSize > 0)
|
|
{
|
|
buffer = (char *) malloc(blockSize);
|
|
if (buffer)
|
|
DumpFileContents();
|
|
else
|
|
{
|
|
printf("\nError: Unable to create buffer of size <%d>.\n",
|
|
blockSize);
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Close out the file and get rid of the allocated block buffer */
|
|
if (fp)
|
|
fclose(fp);
|
|
|
|
if (buffer)
|
|
free(buffer);
|
|
|
|
exit(exitCode);
|
|
}
|