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