sbin/hammer/cmd_volume.c

   1 /*
   2  * Copyright (c) 2009 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> and
   6  * Michael Neumann <mneumann@ntecs.de>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  * 3. Neither the name of The DragonFly Project nor the names of its
  19  *    contributors may be used to endorse or promote products derived
  20  *    from this software without specific, prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  25  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  26  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  28  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  29  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  30  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  31  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  32  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  */
  36 /*
  37  * Volume operations:
  38  *
  39  *   - volume-add: Add new volume to HAMMER filesystem
  40  *   - volume-del: Remove volume from HAMMER filesystem
  41  *   - volume-list: List volumes making up a HAMMER filesystem
  42  *   - volume-blkdevs: List volumes making up a HAMMER filesystem
  43  *     in blkdevs format
  44  */
  45
  46 #include "hammer.h"
  47
  48 /*
  49  * volume-add <device> <filesystem>
  50  */
  51 void
  52 hammer_cmd_volume_add(char **av, int ac)
  53 {
  54         struct hammer_ioc_volume ioc;
  55         volume_info_t volume;
  56         int fd;
  57         const char *device, *filesystem;
  58
  59         if (ac != 2) {
  60                 errx(1, "hammer volume-add <device> <filesystem>");
  61                 /* not reached */
  62         }
  63
  64         device = av[0];
  65         filesystem = av[1];
  66
  67         fd = open(filesystem, O_RDONLY);
  68         if (fd < 0) {
  69                 err(1, "hammer volume-add: unable to access %s", filesystem);
  70                 /* not reached */
  71         }
  72
  73         /*
  74          * Initialize and check the device
  75          */
  76         volume = init_volume(device, O_RDONLY, -1);
  77         assert(volume->vol_no == -1);
  78         if (is_regfile(volume)) {
  79                 errx(1, "Not a block device: %s", device);
  80                 /* not reached */
  81         }
  82         close(volume->fd);
  83
  84         /*
  85          * volume-add ioctl
  86          */
  87         bzero(&ioc, sizeof(ioc));
  88         strncpy(ioc.device_name, device, sizeof(ioc.device_name) - 1);
  89         ioc.vol_size = volume->size;
  90         ioc.boot_area_size = init_boot_area_size(0, ioc.vol_size);
  91         ioc.memory_log_size = init_memory_log_size(0, ioc.vol_size);
  92
  93         if (ioctl(fd, HAMMERIOC_ADD_VOLUME, &ioc) < 0) {
  94                 err(1, "hammer volume-add ioctl");
  95                 /* not reached */
  96         }
  97
  98         close(fd);
  99         hammer_cmd_volume_list(av + 1, ac - 1);
 100 }
 101
 102 /*
 103  * volume-del <device> <filesystem>
 104  */
 105 void
 106 hammer_cmd_volume_del(char **av, int ac)
 107 {
 108         struct hammer_ioc_volume ioc;
 109         int fd, retried = 0;
 110         const char *device, *filesystem;
 111
 112         if (ac != 2) {
 113                 errx(1, "hammer volume-del <device> <filesystem>");
 114                 /* not reached */
 115         }
 116
 117         device = av[0];
 118         filesystem = av[1];
 119
 120         fd = open(filesystem, O_RDONLY);
 121         if (fd < 0) {
 122                 err(1, "hammer volume-del: unable to access %s", filesystem);
 123                 /* not reached */
 124         }
 125
 126         /*
 127          * volume-del ioctl
 128          */
 129         bzero(&ioc, sizeof(ioc));
 130         strncpy(ioc.device_name, device, sizeof(ioc.device_name) - 1);
 131         if (ForceOpt)
 132                 ioc.flag |= HAMMER_IOC_VOLUME_REBLOCK;
 133 retry:
 134         if (ioctl(fd, HAMMERIOC_DEL_VOLUME, &ioc) < 0) {
 135                 if ((errno == ENOTEMPTY) && (retried++ == 0)) {
 136                         printf("%s is not empty, ", device);
 137                         printf("do you want to reblock %s? [y/n] ", device);
 138                         fflush(stdout);
 139                         if (getyn() == 1) {
 140                                 ioc.flag |= HAMMER_IOC_VOLUME_REBLOCK;
 141                                 goto retry;
 142                         }
 143                 }
 144                 err(1, "hammer volume-del ioctl");
 145                 /* not reached */
 146         }
 147
 148         close(fd);
 149         hammer_cmd_volume_list(av + 1, ac - 1);
 150 }
 151
 152 /*
 153  * volume-list <filesystem>
 154  */
 155 void
 156 hammer_cmd_volume_list(char **av, int ac)
 157 {
 158         struct hammer_ioc_volume_list ioc;
 159         char *device_name;
 160         int vol_no, i;
 161
 162         if (ac < 1) {
 163                 errx(1, "hammer volume-list <filesystem>");
 164                 /* not reached */
 165         }
 166
 167         if (hammer_fs_to_vol(av[0], &ioc) == -1) {
 168                 errx(1, "hammer volume-list: failed");
 169                 /* not reached */
 170         }
 171
 172         for (i = 0; i < ioc.nvols; i++) {
 173                 device_name = ioc.vols[i].device_name;
 174                 vol_no = ioc.vols[i].vol_no;
 175                 if (VerboseOpt) {
 176                         printf("%d\t%s%s\n", vol_no, device_name,
 177                                 (vol_no == HAMMER_ROOT_VOLNO ?
 178                                 " (Root Volume)" : ""));
 179                 } else {
 180                         printf("%s\n", device_name);
 181                 }
 182         }
 183
 184         free(ioc.vols);
 185 }
 186
 187 /*
 188  * volume-blkdevs <filesystem>
 189  */
 190 void
 191 hammer_cmd_volume_blkdevs(char **av, int ac)
 192 {
 193         struct hammer_ioc_volume_list ioc;
 194         int i;
 195
 196         if (ac < 1) {
 197                 errx(1, "hammer volume-blkdevs <filesystem>");
 198                 /* not reached */
 199         }
 200
 201         if (hammer_fs_to_vol(av[0], &ioc) == -1) {
 202                 errx(1, "hammer volume-list: failed");
 203                 /* not reached */
 204         }
 205
 206         for (i = 0; i < ioc.nvols; i++) {
 207                 printf("%s", ioc.vols[i].device_name);
 208                 if (i != ioc.nvols - 1)
 209                         printf(":");
 210         }
 211         printf("\n");
 212
 213         free(ioc.vols);
 214 }