sbin/hammer/cmd_version.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_version.c,v 1.2 2008/11/13 02:23:53 dillon Exp $
  35  */
  36 /*
  37  * Get and set the HAMMER filesystem version.
  38  */
  39
  40 #include "hammer.h"
  41
  42 /*
  43  * version <filesystem>
  44  */
  45 void
  46 hammer_cmd_get_version(char **av, int ac)
  47 {
  48         struct hammer_ioc_version version;
  49         char wip[16];
  50         int fd;
  51
  52         if (ac != 1) {
  53                 errx(1, "hammer version - expected a single <fs> path arg");
  54                 /* not reached */
  55         }
  56         fd = open(av[0], O_RDONLY);
  57         if (fd < 0) {
  58                 err(1, "hammer version: unable to access %s", av[0]);
  59                 /* not reached */
  60         }
  61
  62         /*
  63          * version.cur_version must be set to 0 to retrieve current version
  64          * info.
  65          */
  66         bzero(&version, sizeof(version));
  67         if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
  68                 err(1, "hammer version ioctl");
  69                 /* not reached */
  70         }
  71         HammerVersion = version.cur_version;
  72
  73         snprintf(wip, 16, "%d", version.wip_version);
  74         printf("min=%d wip=%s max=%d current=%d description=\"%s\"\n",
  75                 version.min_version,
  76                (version.wip_version > version.max_version) ? "none" : wip,
  77                 version.max_version,
  78                 version.cur_version,
  79                 version.description
  80         );
  81
  82         /*
  83          * Loop over available versions to display description.
  84          */
  85         if (QuietOpt == 0) {
  86                 version.cur_version = 1;
  87                 printf("available versions:\n");
  88                 while (ioctl(fd, HAMMERIOC_GET_VERSION, &version) == 0) {
  89                         printf("    %d\t%s\t%s\n",
  90                                 version.cur_version,
  91                                 (version.cur_version < version.wip_version ?
  92                                         "NORM" : "WIP "),
  93                                 version.description);
  94                         ++version.cur_version;
  95                 }
  96         }
  97         close(fd);
  98 }
  99
 100 /*
 101  * version-upgrade <filesystem> <version> [force]
 102  */
 103 void
 104 hammer_cmd_set_version(char **av, int ac)
 105 {
 106         struct hammer_ioc_version version;
 107         int fd;
 108         int overs;
 109         int nvers;
 110
 111         if (ac < 2 || ac > 3 || (ac == 3 && strcmp(av[2], "force") != 0)) {
 112                 errx(1, "hammer version-upgrade: expected <fs> vers# [force]");
 113                 /* not reached */
 114         }
 115
 116         fd = open(av[0], O_RDONLY);
 117         if (fd < 0) {
 118                 err(1, "hammer version-upgrade: unable to access %s", av[0]);
 119                 /* not reached */
 120         }
 121
 122         bzero(&version, sizeof(version));
 123         if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
 124                 err(1, "hammer ioctl");
 125                 /* not reached */
 126         }
 127         HammerVersion = version.cur_version;
 128         overs = version.cur_version;
 129
 130         version.cur_version = strtol(av[1], NULL, 0);
 131         nvers = version.cur_version;
 132
 133         if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
 134                 err(1, "hammer ioctl");
 135                 /* not reached */
 136         }
 137         HammerVersion = version.cur_version;
 138         if (version.cur_version >= version.wip_version && ac != 3) {
 139                 errx(1, "The requested version is a work-in-progress"
 140                         " and requires the 'force' directive");
 141                 /* not reached */
 142         }
 143
 144         if (ioctl(fd, HAMMERIOC_SET_VERSION, &version) < 0) {
 145                 err(1, "hammer version-upgrade ioctl");
 146                 /* not reached */
 147         }
 148         if (version.head.error) {
 149                 errx(1, "hammer version-upgrade ioctl");
 150                 /* not reached */
 151         }
 152
 153         printf("hammer version-upgrade: succeeded\n");
 154         if (overs < 3 && nvers >= 3) {
 155                 printf("NOTE!  Please run 'hammer cleanup' to convert the\n"
 156                        "<pfs>/snapshots directories to the new meta-data\n"
 157                        "format.  Once converted configuration data will\n"
 158                        "no longer resides in <pfs>/snapshots and you can\n"
 159                        "even rm -rf it entirely if you want.\n");
 160         }
 161
 162         close(fd);
 163 }
 164