usr.bin/checkpt/checkpt.c

   1 /*-
   2  * Copyright (c) 2003 Kip Macy All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  *
  25  * $DragonFly: src/usr.bin/checkpt/checkpt.c,v 1.2 2003/10/20 07:01:05 dillon Exp $
  26  */
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <unistd.h>
  31 #include <string.h>
  32 #include <sys/signal.h>
  33 #include <sys/syscall.h>
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <sys/module.h>
  37 #include <signal.h>
  38 #include <fcntl.h>
  39
  40 #include "call.h"
  41
  42 static
  43 void
  44 usage(const char *prg)
  45 {
  46     fprintf(stderr, "%s file.ckpt\n", prg);
  47     exit(1);
  48 }
  49
  50 int
  51 main(int ac, char **av)
  52 {
  53     int fd;
  54     int error;
  55     char ch;
  56     const char *filename = NULL;
  57
  58     while ((ch = getopt(ac, av, "r:")) != -1) {
  59         switch(ch) {
  60         case 'r':
  61             filename = optarg;
  62             break;
  63         default:
  64             usage(av[0]);
  65         }
  66     }
  67     if (filename == NULL)
  68         usage(av[0]);
  69
  70     fd = open(filename, O_RDONLY);
  71     if (fd < 0) {
  72         fprintf(stderr, "unable to open %s\n", filename);
  73         exit(1);
  74     }
  75     error = ckpt_restore(fd, THAW_RETURN);
  76     if (error)
  77         fprintf(stderr, "thaw failed error %d %s\n", error, strerror(error));
  78     else
  79         fprintf(stderr, "Unknown error restoring checkpoint\n");
  80     return(5);
  81 }
  82