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 26 #include <sys/signal.h> 27 #include <sys/syscall.h> 28 #include <sys/types.h> 29 #include <sys/stat.h> 30 #include <sys/module.h> 31 #include <sys/checkpoint.h> 32 33 #include <fcntl.h> 34 #include <signal.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <unistd.h> 39 #include <errno.h> 40 41 static 42 void 43 usage(const char *prg) 44 { 45 fprintf(stderr, "%s -r file.ckpt\n", prg); 46 exit(1); 47 } 48 49 int 50 main(int ac, char **av) 51 { 52 int fd; 53 int error; 54 char ch; 55 const char *filename = NULL; 56 57 while ((ch = getopt(ac, av, "r:")) != -1) { 58 switch(ch) { 59 case 'r': 60 filename = optarg; 61 break; 62 default: 63 usage(av[0]); 64 } 65 } 66 if (filename == NULL) 67 usage(av[0]); 68 69 fd = open(filename, O_RDONLY); 70 if (fd < 0) { 71 fprintf(stderr, "unable to open %s\n", filename); 72 exit(1); 73 } 74 error = sys_checkpoint(CKPT_THAW, fd, -1, 1); 75 if (error) 76 fprintf(stderr, "thaw failed error %d %s\n", errno, strerror(errno)); 77 else 78 fprintf(stderr, "Unknown error restoring checkpoint\n"); 79 return(5); 80 } 81