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         struct volume_info *vol;
  56         int fd;
  57         const char *device, *filesystem;
  58
  59         if (ac != 2) {
  60                 fprintf(stderr, "hammer volume-add <device> <filesystem>\n");
  61                 exit(1);
  62         }
  63
  64         device = av[0];
  65         filesystem = av[1];
  66
  67         fd = open(filesystem, O_RDONLY);
  68         if (fd < 0) {
  69                 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n",
  70                         filesystem, strerror(errno));
  71                 exit(1);
  72         }
  73
  74         /*
  75          * Initialize and check the device
  76          */
  77         vol = init_volume(device, O_RDONLY, -1);
  78         assert(vol->vol_no == -1);
  79         if (strcmp(vol->type, "DEVICE")) {
  80                 fprintf(stderr, "Not a block device: %s\n", device);
  81                 exit(1);
  82         }
  83         close(vol->fd);
  84
  85         /*
  86          * volume-add ioctl
  87          */
  88         bzero(&ioc, sizeof(ioc));
  89         strncpy(ioc.device_name, device, MAXPATHLEN);
  90         ioc.vol_size = vol->size;
  91         ioc.boot_area_size = init_boot_area_size(0, ioc.vol_size);
  92         ioc.memory_log_size = init_memory_log_size(0, ioc.vol_size);
  93
  94         if (ioctl(fd, HAMMERIOC_ADD_VOLUME, &ioc) < 0) {
  95                 fprintf(stderr, "hammer volume-add ioctl: %s\n",
  96                         strerror(errno));
  97                 exit(1);
  98         }
  99
 100         close(fd);
 101         hammer_cmd_volume_list(av + 1, ac - 1);
 102 }
 103
 104 /*
 105  * volume-del <device> <filesystem>
 106  */
 107 void
 108 hammer_cmd_volume_del(char **av, int ac)
 109 {
 110         struct hammer_ioc_volume ioc;
 111         int fd, error, retried = 0;
 112         const char *device, *filesystem;
 113
 114         if (ac != 2) {
 115                 fprintf(stderr, "hammer volume-del <device> <filesystem>\n");
 116                 exit(1);
 117         }
 118
 119         device = av[0];
 120         filesystem = av[1];
 121
 122         fd = open(filesystem, O_RDONLY);
 123         if (fd < 0) {
 124                 fprintf(stderr, "hammer volume-del: unable to access %s: %s\n",
 125                         filesystem, strerror(errno));
 126                 exit(1);
 127         }
 128
 129         /*
 130          * volume-del ioctl
 131          */
 132         bzero(&ioc, sizeof(ioc));
 133         strncpy(ioc.device_name, device, MAXPATHLEN);
 134         if (ForceOpt)
 135                 ioc.flag |= HAMMER_IOC_VOLUME_REBLOCK;
 136 retry:
 137         if (ioctl(fd, HAMMERIOC_DEL_VOLUME, &ioc) < 0) {
 138                 error = errno;
 139                 if ((error == ENOTEMPTY) && (retried++ == 0)) {
 140                         printf("%s is not empty, ", device);
 141                         printf("do you want to reblock %s? [y/n] ", device);
 142                         fflush(stdout);
 143                         if (getyn() == 1) {
 144                                 ioc.flag |= HAMMER_IOC_VOLUME_REBLOCK;
 145                                 goto retry;
 146                         }
 147                 }
 148                 fprintf(stderr, "hammer volume-del ioctl: %s\n",
 149                         strerror(error));
 150                 exit(1);
 151         }
 152
 153         close(fd);
 154         hammer_cmd_volume_list(av + 1, ac - 1);
 155 }
 156
 157 /*
 158  * volume-list <filesystem>
 159  */
 160 void
 161 hammer_cmd_volume_list(char **av, int ac)
 162 {
 163         struct hammer_ioc_volume_list ioc;
 164         char *device_name;
 165         int vol_no, i;
 166
 167         if (ac < 1) {
 168                 fprintf(stderr, "hammer volume-list <filesystem>\n");
 169                 exit(1);
 170         }
 171
 172         if (hammer_fs_to_vol(av[0], &ioc) == -1) {
 173                 fprintf(stderr, "hammer volume-list: failed\n");
 174                 exit(1);
 175         }
 176
 177         for (i = 0; i < ioc.nvols; i++) {
 178                 device_name = ioc.vols[i].device_name;
 179                 vol_no = ioc.vols[i].vol_no;
 180                 if (VerboseOpt) {
 181                         printf("%d\t%s%s\n", vol_no, device_name,
 182                                 (vol_no == HAMMER_ROOT_VOLNO ?
 183                                 " (Root Volume)" : ""));
 184                 } else {
 185                         printf("%s\n", device_name);
 186                 }
 187         }
 188
 189         free(ioc.vols);
 190 }
 191
 192 /*
 193  * volume-blkdevs <filesystem>
 194  */
 195 void
 196 hammer_cmd_volume_blkdevs(char **av, int ac)
 197 {
 198         struct hammer_ioc_volume_list ioc;
 199         int i;
 200
 201         if (ac < 1) {
 202                 fprintf(stderr, "hammer volume-blkdevs <filesystem>\n");
 203                 exit(1);
 204         }
 205
 206         if (hammer_fs_to_vol(av[0], &ioc) == -1) {
 207                 fprintf(stderr, "hammer volume-list: failed\n");
 208                 exit(1);
 209         }
 210
 211         for (i = 0; i < ioc.nvols; i++) {
 212                 printf("%s", ioc.vols[i].device_name);
 213                 if (i != ioc.nvols - 1)
 214                         printf(":");
 215         }
 216         printf("\n");
 217
 218         free(ioc.vols);
 219 }