sbin/hammer/cmd_synctid.c

   1 /*
   2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sbin/hammer/cmd_synctid.c,v 1.1 2008/05/13 20:49:34 dillon Exp $
  35  */
  36
  37 #include "hammer.h"
  38
  39 static void synctid_usage(int exit_code);
  40
  41 /*
  42  * synctid <filesystem> [quick]
  43  */
  44 void
  45 hammer_cmd_synctid(char **av, int ac)
  46 {
  47         struct hammer_ioc_synctid synctid;
  48         const char *filesystem;
  49         int fd;
  50
  51         bzero(&synctid, sizeof(synctid));
  52         synctid.op = HAMMER_SYNCTID_SYNC2;
  53
  54         if (ac == 0 || ac > 2) {
  55                 synctid_usage(1);
  56                 /* not reached */
  57         }
  58         filesystem = av[0];
  59         if (ac == 2) {
  60                 if (strcmp(av[1], "quick") == 0) {
  61                         synctid.op = HAMMER_SYNCTID_SYNC1;
  62                 } else {
  63                         synctid_usage(1);
  64                         /* not reached */
  65                 }
  66         }
  67         fd = open(filesystem, O_RDONLY);
  68         if (fd < 0) {
  69                 err(1, "Unable to open %s", filesystem);
  70                 /* not reached */
  71         }
  72         if (ioctl(fd, HAMMERIOC_SYNCTID, &synctid) < 0) {
  73                 err(1, "Synctid %s failed", filesystem);
  74                 /* not reached */
  75         } else {
  76                 printf("0x%016jx\n", (uintmax_t)synctid.tid);
  77         }
  78         close(fd);
  79 }
  80
  81 static
  82 void
  83 synctid_usage(int exit_code)
  84 {
  85         fprintf(stderr, "hammer synctid <filesystem> [quick]\n");
  86         exit(exit_code);
  87 }
  88