diff -rc cronolog-1.6.1/src/cronolog.c cronolog-1.6.1-ds/src/cronolog.c
*** cronolog-1.6.1/src/cronolog.c	Mon Dec 20 03:56:20 1999
--- cronolog-1.6.1-ds/src/cronolog.c	Tue Oct  3 17:49:34 2000
***************
*** 88,94 ****
  
  /* Forward function declaration */
  
! int	new_log_file(const char *, const char *, mode_t, 
  		     PERIODICITY, char *, size_t, time_t, time_t *);
  
  
--- 88,94 ----
  
  /* Forward function declaration */
  
! int	new_log_file(const char *, const char *, mode_t, const char*,
  		     PERIODICITY, char *, size_t, time_t, time_t *);
  
  
***************
*** 101,106 ****
--- 101,107 ----
  			"\n" \
  			"   -H NAME, --hardlink=NAME maintain a hard link from NAME to current log\n" \
  			"   -S NAME, --symlink=NAME  maintain a symbolic link from NAME to current log\n" \
+ 			"   -p NAME, --prevlink=NAME  maintain a link to the previous log file. \n" \
  			"   -l NAME, --link=NAME     same as -S/--symlink\n" \
  			"   -h,      --help          print this help, then exit\n" \
  			"   -o,      --once-only     create single output log from template (not rotated)\n" \
***************
*** 115,121 ****
  
  /* Definition of the short and long program options */
  
! char          *short_options = "aes:z:oH:S:l:hVx:";
  struct option long_options[] =
  {
      { "american",	no_argument,		NULL, 'a' },
--- 116,122 ----
  
  /* Definition of the short and long program options */
  
! char          *short_options = "aes:z:oH:S:p:l:hVx:";
  struct option long_options[] =
  {
      { "american",	no_argument,		NULL, 'a' },
***************
*** 124,129 ****
--- 125,131 ----
      { "time-zone",  	required_argument,	NULL, 'z' },
      { "hardlink",  	required_argument, 	NULL, 'H' },
      { "symlink",   	required_argument, 	NULL, 'S' },
+     { "prevlink",   	required_argument, 	NULL, 'p' },
      { "link",      	required_argument, 	NULL, 'l' },
      { "once-only", 	no_argument,       	NULL, 'o' },
      { "help",      	no_argument,       	NULL, 'h' },
***************
*** 143,148 ****
--- 145,151 ----
      char	*start_time = NULL;
      char	*template;
      char	*linkname = NULL;
+     char	*oldlink = NULL;
      mode_t	linktype = 0;
      int 	n_bytes_read;
      int		ch;
***************
*** 182,187 ****
--- 185,194 ----
  	    linkname = optarg;
  	    linktype = S_IFLNK;
  	    break;
+ 
+ 	case 'p':
+ 	    oldlink = optarg;
+ 	    break;
  	    
  	case 'o':
  	    periodicity = ONCE_ONLY;
***************
*** 279,285 ****
  	 */
  	if (log_fd < 0)
  	{
! 	    log_fd = new_log_file(template, linkname, linktype, periodicity,
  				  filename, sizeof (filename), time_now, &next_period);
  	}
  
--- 286,292 ----
  	 */
  	if (log_fd < 0)
  	{
! 	    log_fd = new_log_file(template, linkname, linktype, oldlink, periodicity,
  				  filename, sizeof (filename), time_now, &next_period);
  	}
  
***************
*** 310,316 ****
   * supplied.
   */
  int
! new_log_file(const char *template, const char *linkname, mode_t linktype,
  	     PERIODICITY periodicity, char *pfilename, size_t pfilename_len,
  	     time_t time_now, time_t *pnext_period)
  {
--- 317,323 ----
   * supplied.
   */
  int
! new_log_file(const char *template, const char *linkname, mode_t linktype, const char * oldlink,
  	     PERIODICITY periodicity, char *pfilename, size_t pfilename_len,
  	     time_t time_now, time_t *pnext_period)
  {
***************
*** 343,348 ****
--- 350,360 ----
      {
  	perror(pfilename);
  	exit(2);
+     }
+     
+     if(oldlink && linkname)
+     {
+     	rename(linkname, oldlink);
      }
  
      if (linkname)