git.sesse.net Git - bcachefs-tools-debian/blob - bcachefs.c

   1 /*
   2  * Authors: Kent Overstreet <kent.overstreet@gmail.com>
   3  *          Gabriel de Perthuis <g2p.code@gmail.com>
   4  *          Jacob Malevich <jam@datera.io>
   5  *
   6  * GPLv2
   7  */
   8
   9 #include <stdlib.h>
  10 #include <stdio.h>
  11 #include <ctype.h>
  12 #include <errno.h>
  13 #include <inttypes.h>
  14 #include <limits.h>
  15 #include <fcntl.h>
  16 #include <unistd.h>
  17 #include <stdbool.h>
  18 #include <stdint.h>
  19 #include <string.h>
  20 #include <sys/ioctl.h>
  21 #include <sys/types.h>
  22 #include <sys/stat.h>
  23
  24 #include <raid/raid.h>
  25
  26 #include "cmds.h"
  27
  28 static void usage(void)
  29 {
  30         puts("bcachefs - tool for managing bcachefs filesystems\n"
  31              "usage: bcachefs <command> [<args>]\n"
  32              "\n"
  33              "Superblock commands:\n"
  34              "  format                   Format a new filesystem\n"
  35              "  show-super               Dump superblock information to stdout\n"
  36              "  set-option               Set a filesystem option\n"
  37              "\n"
  38 #ifndef BCACHEFS_NO_RUST
  39              "Mount:\n"
  40              "  mount                    Mount a filesystem\n"
  41              "\n"
  42 #endif
  43              "Repair:\n"
  44              "  fsck                     Check an existing filesystem for errors\n"
  45              "\n"
  46 #if 0
  47              "Startup/shutdown, assembly of multi device filesystems:\n"
  48              "  assemble                 Assemble an existing multi device filesystem\n"
  49              "  incremental              Incrementally assemble an existing multi device filesystem\n"
  50              "  run                      Start a partially assembled filesystem\n"
  51              "  stop                     Stop a running filesystem\n"
  52              "\n"
  53 #endif
  54              "Commands for managing a running filesystem:\n"
  55              "  fs usage                 Show disk usage\n"
  56              "\n"
  57              "Commands for managing devices within a running filesystem:\n"
  58              "  device add               Add a new device to an existing filesystem\n"
  59              "  device remove            Remove a device from an existing filesystem\n"
  60              "  device online            Re-add an existing member to a filesystem\n"
  61              "  device offline           Take a device offline, without removing it\n"
  62              "  device evacuate          Migrate data off of a specific device\n"
  63              "  device set-state         Mark a device as failed\n"
  64              "  device resize            Resize filesystem on a device\n"
  65              "  device resize-journal    Resize journal on a device\n"
  66              "\n"
  67              "Commands for managing subvolumes and snapshots:\n"
  68              "  subvolume create         Create a new subvolume\n"
  69              "  subvolume delete         Delete an existing subvolume\n"
  70              "  subvolume snapshot       Create a snapshot\n"
  71              "\n"
  72              "Commands for managing filesystem data:\n"
  73              "  data rereplicate         Rereplicate degraded data\n"
  74              "  data job                 Kick off low level data jobs\n"
  75              "\n"
  76              "Encryption:\n"
  77              "  unlock                   Unlock an encrypted filesystem prior to running/mounting\n"
  78              "  set-passphrase           Change passphrase on an existing (unmounted) filesystem\n"
  79              "  remove-passphrase        Remove passphrase on an existing (unmounted) filesystem\n"
  80              "\n"
  81              "Migrate:\n"
  82              "  migrate                  Migrate an existing filesystem to bcachefs, in place\n"
  83              "  migrate-superblock       Add default superblock, after bcachefs migrate\n"
  84              "\n"
  85              "Commands for operating on files in a bcachefs filesystem:\n"
  86              "  setattr                  Set various per file attributes\n"
  87              "\n"
  88              "Debug:\n"
  89              "These commands work on offline, unmounted filesystems\n"
  90              "  dump                     Dump filesystem metadata to a qcow2 image\n"
  91 #ifndef BCACHEFS_NO_RUST
  92              "  list                     List filesystem metadata in textual form\n"
  93 #endif
  94              "  list_journal             List contents of journal\n"
  95              "\n"
  96              "FUSE:\n"
  97              "  fusemount                Mount a filesystem via FUSE\n"
  98              "\n"
  99              "Miscellaneous:\n"
 100              "  version                  Display the version of the invoked bcachefs tool\n");
 101 }
 102
 103 static char *full_cmd;
 104
 105 static char *pop_cmd(int *argc, char *argv[])
 106 {
 107         char *cmd = argv[1];
 108         if (!(*argc < 2))
 109                 memmove(&argv[1], &argv[2], *argc * sizeof(argv[0]));
 110         (*argc)--;
 111
 112         full_cmd = mprintf("%s %s", full_cmd, cmd);
 113         return cmd;
 114 }
 115
 116 static int fs_cmds(int argc, char *argv[])
 117 {
 118         char *cmd = pop_cmd(&argc, argv);
 119
 120         if (argc < 1) {
 121                 usage();
 122                 exit(EXIT_FAILURE);
 123         }
 124         if (!strcmp(cmd, "usage"))
 125                 return cmd_fs_usage(argc, argv);
 126
 127         return 0;
 128 }
 129
 130 static int device_cmds(int argc, char *argv[])
 131 {
 132         char *cmd = pop_cmd(&argc, argv);
 133
 134         if (argc < 1)
 135                 return device_usage();
 136         if (!strcmp(cmd, "add"))
 137                 return cmd_device_add(argc, argv);
 138         if (!strcmp(cmd, "remove"))
 139                 return cmd_device_remove(argc, argv);
 140         if (!strcmp(cmd, "online"))
 141                 return cmd_device_online(argc, argv);
 142         if (!strcmp(cmd, "offline"))
 143                 return cmd_device_offline(argc, argv);
 144         if (!strcmp(cmd, "evacuate"))
 145                 return cmd_device_evacuate(argc, argv);
 146         if (!strcmp(cmd, "set-state"))
 147                 return cmd_device_set_state(argc, argv);
 148         if (!strcmp(cmd, "resize"))
 149                 return cmd_device_resize(argc, argv);
 150         if (!strcmp(cmd, "resize-journal"))
 151                 return cmd_device_resize_journal(argc, argv);
 152
 153         return 0;
 154 }
 155
 156 static int data_cmds(int argc, char *argv[])
 157 {
 158         char *cmd = pop_cmd(&argc, argv);
 159
 160         if (argc < 1)
 161                 return data_usage();
 162         if (!strcmp(cmd, "rereplicate"))
 163                 return cmd_data_rereplicate(argc, argv);
 164         if (!strcmp(cmd, "job"))
 165                 return cmd_data_job(argc, argv);
 166
 167         return 0;
 168 }
 169
 170 static int subvolume_cmds(int argc, char *argv[])
 171 {
 172         char *cmd = pop_cmd(&argc, argv);
 173         if (argc < 1)
 174                 return subvolume_usage();
 175         if (!strcmp(cmd, "create"))
 176                 return cmd_subvolume_create(argc, argv);
 177         if (!strcmp(cmd, "delete"))
 178                 return cmd_subvolume_delete(argc, argv);
 179         if (!strcmp(cmd, "snapshot"))
 180                 return cmd_subvolume_snapshot(argc, argv);
 181
 182         return 0;
 183 }
 184
 185 int main(int argc, char *argv[])
 186 {
 187         raid_init();
 188
 189         full_cmd = argv[0];
 190
 191         setvbuf(stdout, NULL, _IOLBF, 0);
 192
 193         char *cmd = pop_cmd(&argc, argv);
 194         if (!cmd) {
 195                 puts("missing command\n");
 196                 goto usage;
 197         }
 198
 199         /* these subcommands display usage when argc < 2 */
 200         if (!strcmp(cmd, "device"))
 201                 return device_cmds(argc, argv);
 202         if (!strcmp(cmd, "fs"))
 203                 return fs_cmds(argc, argv);
 204         if (!strcmp(cmd, "data"))
 205                 return data_cmds(argc, argv);
 206         if (!strcmp(cmd, "subvolume"))
 207                 return subvolume_cmds(argc, argv);
 208         if (!strcmp(cmd, "format"))
 209                 return cmd_format(argc, argv);
 210         if (!strcmp(cmd, "fsck"))
 211                 return cmd_fsck(argc, argv);
 212         if (!strcmp(cmd, "version"))
 213                 return cmd_version(argc, argv);
 214         if (!strcmp(cmd, "show-super"))
 215                 return cmd_show_super(argc, argv);
 216         if (!strcmp(cmd, "set-option"))
 217                 return cmd_set_option(argc, argv);
 218
 219 #if 0
 220         if (!strcmp(cmd, "assemble"))
 221                 return cmd_assemble(argc, argv);
 222         if (!strcmp(cmd, "incremental"))
 223                 return cmd_incremental(argc, argv);
 224         if (!strcmp(cmd, "run"))
 225                 return cmd_run(argc, argv);
 226         if (!strcmp(cmd, "stop"))
 227                 return cmd_stop(argc, argv);
 228 #endif
 229
 230         if (!strcmp(cmd, "unlock"))
 231                 return cmd_unlock(argc, argv);
 232         if (!strcmp(cmd, "set-passphrase"))
 233                 return cmd_set_passphrase(argc, argv);
 234         if (!strcmp(cmd, "remove-passphrase"))
 235                 return cmd_remove_passphrase(argc, argv);
 236
 237         if (!strcmp(cmd, "migrate"))
 238                 return cmd_migrate(argc, argv);
 239         if (!strcmp(cmd, "migrate-superblock"))
 240                 return cmd_migrate_superblock(argc, argv);
 241
 242         if (!strcmp(cmd, "dump"))
 243                 return cmd_dump(argc, argv);
 244 #ifndef BCACHEFS_NO_RUST
 245         if (!strcmp(cmd, "list"))
 246                 return cmd_list(argc, argv);
 247 #endif
 248         if (!strcmp(cmd, "list_journal"))
 249                 return cmd_list_journal(argc, argv);
 250         if (!strcmp(cmd, "kill_btree_node"))
 251                 return cmd_kill_btree_node(argc, argv);
 252
 253         if (!strcmp(cmd, "setattr"))
 254                 return cmd_setattr(argc, argv);
 255 #ifndef BCACHEFS_NO_RUST
 256         if (!strcmp(cmd, "mount")) {
 257                 return cmd_mount(argc, argv);
 258         }
 259 #endif
 260
 261 #ifdef BCACHEFS_FUSE
 262         if (!strcmp(cmd, "fusemount"))
 263                 return cmd_fusemount(argc, argv);
 264 #endif
 265
 266         if (!strcmp(cmd, "--help")) {
 267                 usage();
 268                 return 0;
 269         }
 270
 271         printf("Unknown command %s\n", cmd);
 272 usage:
 273         usage();
 274         exit(EXIT_FAILURE);
 275 }