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ckckp.c revision 1.3 
      1 /*	$NetBSD: ckckp.c,v 1.3 2006/04/27 22:37:54 perseant Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2006 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Konrad E. Schroder <perseant (at) hhhh.org>.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <err.h>
     40 #include <fcntl.h>
     41 #include <stdio.h>
     42 #include <stdlib.h>
     43 #include <sys/param.h>
     44 #include <sys/mount.h>
     45 #include <ufs/ufs/dinode.h>
     46 #include <ufs/lfs/lfs.h>
     47 
     48 int main(int argc, char **argv)
     49 {
     50 	int fd, e, sno;
     51 	char cmd[BUFSIZ], s[BUFSIZ];
     52 	FILE *pp;
     53 
     54 	if (argc < 5)
     55 		errx(1, "usage: %s <fs-root> <raw-dev> <save-filename> "
     56 		     "<work-filename>\n", argv[0]);
     57 
     58 	fd = open(argv[1], 0, 0);
     59 	if (fd < 0)
     60 		err(1, argv[1]);
     61 
     62 	fcntl(fd, LFCNWRAPGO, NULL);
     63 	sleep(5);
     64 
     65 	/* Loop forever calling LFCNWRAP{STOP,GO} */
     66 	sno = 0;
     67 	while(1) {
     68 		printf("Waiting until fs wraps\n");
     69 		fcntl(fd, LFCNWRAPSTOP, NULL);
     70 
     71 		/*
     72 		 * When the fcntl exits, the wrap is about to occur (but
     73 		 * is waiting for the signal to go).  Call our mass-check
     74 		 * script, and if all is well, continue.  The output
     75 		 * of the script should end with a line that begins with a
     76 		 * numeric code: zero for okay, nonzero for a failure.
     77 		 */
     78 		printf("Verifying all checkpoints from s/n %d\n", sno);
     79 		sprintf(cmd, "./check-all %s %s %s %d", argv[2], argv[3],
     80 			argv[4], sno);
     81 		pp = popen(cmd, "r");
     82 		s[0] = '\0';
     83 		while(fgets(s, BUFSIZ, pp) != NULL)
     84 			printf("  %s", s);
     85 		if (s[0] == '\0') {
     86 			printf("No checkpoints found or script exited\n");
     87 			return 0;
     88 		}
     89 		sscanf(s, "%d %d", &e, &sno);
     90 		if (e) {
     91 			return 0;
     92 		}
     93 		pclose(pp);
     94 
     95 		++sno;
     96 		printf("Waiting until fs continues\n");
     97 		fcntl(fd, LFCNWRAPGO, NULL);
     98 	}
     99 
    100 	return 0;
    101 }
    102