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Viewing changes to src/bin/pg_resetxlog/pg_resetxlog.c

  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2009-05-19 14:03:37 UTC
  • mfrom: (1.1.3 upstream)
  • Revision ID: james.westby@ubuntu.com-20090519140337-wp9u2si99uppeb81
Tags: 8.4~beta2-2
* Second public beta of 8.4.
* debian/control: Slightly lower the dependencies for postgresql-common to
  >= 98~, so that backports also match.

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src/bin/pg_resetxlog/pg_resetxlog.c
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 * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
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 * Portions Copyright (c) 1994, Regents of the University of California
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 *
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 * $PostgreSQL$
 
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 * $PostgreSQL: pgsql/src/bin/pg_resetxlog/pg_resetxlog.c,v 1.73 2009/05/03 23:13:37 tgl Exp $
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 *
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 *-------------------------------------------------------------------------
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 */
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static void RewriteControlFile(void);
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static void FindEndOfXLOG(void);
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static void KillExistingXLOG(void);
 
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static void KillExistingArchiveStatus(void);
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static void WriteEmptyXLOG(void);
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static void usage(void);
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         */
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        RewriteControlFile();
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        KillExistingXLOG();
 
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        KillExistingArchiveStatus();
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        WriteEmptyXLOG();
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        printf(_("Transaction log reset\n"));
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/*
 
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 * Remove existing archive status files
 
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 */
 
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static void
 
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KillExistingArchiveStatus(void)
 
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{
 
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        DIR                *xldir;
 
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        struct dirent *xlde;
 
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        char            path[MAXPGPATH];
 
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#define ARCHSTATDIR     XLOGDIR "/archive_status"
 
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        xldir = opendir(ARCHSTATDIR);
 
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        if (xldir == NULL)
 
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        {
 
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                fprintf(stderr, _("%s: could not open directory \"%s\": %s\n"),
 
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                                progname, ARCHSTATDIR, strerror(errno));
 
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                exit(1);
 
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        }
 
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        errno = 0;
 
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        while ((xlde = readdir(xldir)) != NULL)
 
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        {
 
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                if (strspn(xlde->d_name, "0123456789ABCDEF") == 24 &&
 
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                        (strcmp(xlde->d_name + 24, ".ready") == 0 ||
 
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                         strcmp(xlde->d_name + 24, ".done")  == 0))
 
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                {
 
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                        snprintf(path, MAXPGPATH, "%s/%s", ARCHSTATDIR, xlde->d_name);
 
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                        if (unlink(path) < 0)
 
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                        {
 
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                                fprintf(stderr, _("%s: could not delete file \"%s\": %s\n"),
 
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                                                progname, path, strerror(errno));
 
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                                exit(1);
 
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                        }
 
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                }
 
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                errno = 0;
 
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        }
 
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#ifdef WIN32
 
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        /*
 
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         * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but not in
 
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         * released version
 
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         */
 
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        if (GetLastError() == ERROR_NO_MORE_FILES)
 
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                errno = 0;
 
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#endif
 
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        if (errno)
 
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        {
 
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                fprintf(stderr, _("%s: could not read from directory \"%s\": %s\n"),
 
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                                progname, ARCHSTATDIR, strerror(errno));
 
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                exit(1);
 
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        }
 
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        closedir(xldir);
 
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}
 
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/*
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 * Write an empty XLOG file, containing only the checkpoint record
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 * already set up in ControlFile.
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 */