src/rename_journal.c

   1 /*======================================================================*
   2  * Copyright (C) 2008 Light Weight Event System                         *
   3  * All rights reserved.                                                 *
   4  *                                                                      *
   5  * This program is free software; you can redistribute it and/or modify *
   6  * it under the terms of the GNU General Public License as published by *
   7  * the Free Software Foundation; either version 2 of the License, or    *
   8  * (at your option) any later version.                                  *
   9  *                                                                      *
  10  * This program is distributed in the hope that it will be useful,      *
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  13  * GNU General Public License for more details.                         *
  14  *                                                                      *
  15  * You should have received a copy of the GNU General Public License    *
  16  * along with this program; if not, write to the Free Software          *
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                   *
  18  * Boston, MA 02110-1301 USA.                                           *
  19  *======================================================================*/
  20
  21 #include "config.h"
  22
  23 #include "rename_journal.h"
  24
  25 #include "log.h"
  26 #include "sig.h"
  27 #include "perror.h"
  28
  29 #include <limits.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <strings.h>
  33 #include <time.h>
  34
  35 int rename_journal(const char* path, time_t* last_rotate)
  36 {
  37   char empty[1] = "";
  38   char* ext;
  39   char base[PATH_MAX];
  40   char newpath[PATH_MAX];
  41   char timebfr[100];        /* Needs to be big enough for strftime below */
  42   time_t now = time(NULL);  /* get current time */
  43   struct tm tm_now;
  44
  45 #ifndef WIN32 //TODO: someday figure out localtime_r() on WIN32, but not needed now
  46   if ( strftime(timebfr, sizeof(timebfr), "%Y%m%d%H%M%S",
  47                 localtime_r(&now, &tm_now)) == 0 )
  48     {
  49       LOG_ER("strftime failed in rename_journal(\"%s\", ...)\n", path);
  50       return -1;
  51     }
  52 #endif
  53
  54   if ( 0 != (ext = strrchr(path, '.')) )
  55     {
  56       strncpy(base, path, ext - path);
  57       base[ext - path] = '\0';
  58     }
  59   else
  60     {
  61       strcpy(base, path);
  62       ext = empty;
  63     }
  64
  65   if ( ! gbl_rotate ) // sink-ram rotate ?
  66     {
  67       ext = empty ;
  68     }
  69
  70   snprintf(newpath, sizeof(newpath), "%s.%s.%ld.%ld%s",
  71            base, timebfr, *last_rotate, now, ext);
  72   *last_rotate = now;
  73
  74   if ( gbl_rotate )
  75     {
  76       LOG_INF("Naming new journal file \"%s\".\n", newpath);
  77     }
  78
  79   if ( rename(path, newpath) < 0 )
  80     {
  81       char buf[100] ;
  82       LOG_ER("rename: %s: - '%s' -> '%s'\n",
  83              strerror_r(errno,buf,sizeof(buf)), path, newpath);
  84       return -1;
  85     }
  86
  87   return 0;
  88 }