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 #ifndef BCACHEFS_NO_RUST
 101          "  completions              Generate shell completions\n"
 102 #endif
 103              "  version                  Display the version of the invoked bcachefs tool\n");
 104 }
 105
 106 static char *full_cmd;
 107
 108 static char *pop_cmd(int *argc, char *argv[])
 109 {
 110         char *cmd = argv[1];
 111         if (!(*argc < 2))
 112                 memmove(&argv[1], &argv[2], *argc * sizeof(argv[0]));
 113         (*argc)--;
 114
 115         full_cmd = mprintf("%s %s", full_cmd, cmd);
 116         return cmd;
 117 }
 118
 119 static int fs_cmds(int argc, char *argv[])
 120 {
 121         char *cmd = pop_cmd(&argc, argv);
 122
 123         if (argc < 1) {
 124                 usage();
 125                 exit(EXIT_FAILURE);
 126         }
 127         if (!strcmp(cmd, "usage"))
 128                 return cmd_fs_usage(argc, argv);
 129
 130         return 0;
 131 }
 132
 133 static int device_cmds(int argc, char *argv[])
 134 {
 135         char *cmd = pop_cmd(&argc, argv);
 136
 137         if (argc < 1)
 138                 return device_usage();
 139         if (!strcmp(cmd, "add"))
 140                 return cmd_device_add(argc, argv);
 141         if (!strcmp(cmd, "remove"))
 142                 return cmd_device_remove(argc, argv);
 143         if (!strcmp(cmd, "online"))
 144                 return cmd_device_online(argc, argv);
 145         if (!strcmp(cmd, "offline"))
 146                 return cmd_device_offline(argc, argv);
 147         if (!strcmp(cmd, "evacuate"))
 148                 return cmd_device_evacuate(argc, argv);
 149         if (!strcmp(cmd, "set-state"))
 150                 return cmd_device_set_state(argc, argv);
 151         if (!strcmp(cmd, "resize"))
 152                 return cmd_device_resize(argc, argv);
 153         if (!strcmp(cmd, "resize-journal"))
 154                 return cmd_device_resize_journal(argc, argv);
 155
 156         return 0;
 157 }
 158
 159 static int data_cmds(int argc, char *argv[])
 160 {
 161         char *cmd = pop_cmd(&argc, argv);
 162
 163         if (argc < 1)
 164                 return data_usage();
 165         if (!strcmp(cmd, "rereplicate"))
 166                 return cmd_data_rereplicate(argc, argv);
 167         if (!strcmp(cmd, "job"))
 168                 return cmd_data_job(argc, argv);
 169
 170         return 0;
 171 }
 172
 173 static int subvolume_cmds(int argc, char *argv[])
 174 {
 175         char *cmd = pop_cmd(&argc, argv);
 176         if (argc < 1)
 177                 return subvolume_usage();
 178         if (!strcmp(cmd, "create"))
 179                 return cmd_subvolume_create(argc, argv);
 180         if (!strcmp(cmd, "delete"))
 181                 return cmd_subvolume_delete(argc, argv);
 182         if (!strcmp(cmd, "snapshot"))
 183                 return cmd_subvolume_snapshot(argc, argv);
 184
 185         return 0;
 186 }
 187
 188 int main(int argc, char *argv[])
 189 {
 190         raid_init();
 191
 192         full_cmd = argv[0];
 193
 194         /* Are we being called via a symlink? */
 195
 196         if (strstr(full_cmd, "mkfs"))
 197                 return cmd_format(argc, argv);
 198
 199         if (strstr(full_cmd, "fsck"))
 200                 return cmd_fsck(argc, argv);
 201
 202 #ifdef BCACHEFS_FUSE
 203         if (strstr(full_cmd, "mount.fuse"))
 204                 return cmd_fusemount(argc, argv);
 205 #endif
 206
 207 #ifndef BCACHEFS_NO_RUST
 208         if (strstr(full_cmd, "mount"))
 209                 return cmd_mount(argc, argv);
 210 #endif
 211
 212         setvbuf(stdout, NULL, _IOLBF, 0);
 213
 214         char *cmd = pop_cmd(&argc, argv);
 215         if (!cmd) {
 216                 puts("missing command\n");
 217                 goto usage;
 218         }
 219
 220         /* these subcommands display usage when argc < 2 */
 221         if (!strcmp(cmd, "device"))
 222                 return device_cmds(argc, argv);
 223         if (!strcmp(cmd, "fs"))
 224                 return fs_cmds(argc, argv);
 225         if (!strcmp(cmd, "data"))
 226                 return data_cmds(argc, argv);
 227         if (!strcmp(cmd, "subvolume"))
 228                 return subvolume_cmds(argc, argv);
 229         if (!strcmp(cmd, "format"))
 230                 return cmd_format(argc, argv);
 231         if (!strcmp(cmd, "fsck"))
 232                 return cmd_fsck(argc, argv);
 233         if (!strcmp(cmd, "version"))
 234                 return cmd_version(argc, argv);
 235         if (!strcmp(cmd, "show-super"))
 236                 return cmd_show_super(argc, argv);
 237         if (!strcmp(cmd, "set-option"))
 238                 return cmd_set_option(argc, argv);
 239
 240 #if 0
 241         if (!strcmp(cmd, "assemble"))
 242                 return cmd_assemble(argc, argv);
 243         if (!strcmp(cmd, "incremental"))
 244                 return cmd_incremental(argc, argv);
 245         if (!strcmp(cmd, "run"))
 246                 return cmd_run(argc, argv);
 247         if (!strcmp(cmd, "stop"))
 248                 return cmd_stop(argc, argv);
 249 #endif
 250
 251         if (!strcmp(cmd, "unlock"))
 252                 return cmd_unlock(argc, argv);
 253         if (!strcmp(cmd, "set-passphrase"))
 254                 return cmd_set_passphrase(argc, argv);
 255         if (!strcmp(cmd, "remove-passphrase"))
 256                 return cmd_remove_passphrase(argc, argv);
 257
 258         if (!strcmp(cmd, "migrate"))
 259                 return cmd_migrate(argc, argv);
 260         if (!strcmp(cmd, "migrate-superblock"))
 261                 return cmd_migrate_superblock(argc, argv);
 262
 263         if (!strcmp(cmd, "dump"))
 264                 return cmd_dump(argc, argv);
 265 #ifndef BCACHEFS_NO_RUST
 266         if (!strcmp(cmd, "list"))
 267                 return cmd_list(argc, argv);
 268 #endif
 269         if (!strcmp(cmd, "list_journal"))
 270                 return cmd_list_journal(argc, argv);
 271         if (!strcmp(cmd, "kill_btree_node"))
 272                 return cmd_kill_btree_node(argc, argv);
 273
 274         if (!strcmp(cmd, "setattr"))
 275                 return cmd_setattr(argc, argv);
 276 #ifndef BCACHEFS_NO_RUST
 277         if (!strcmp(cmd, "mount"))
 278                 return cmd_mount(argc, argv);
 279     if (strstr(cmd, "completions"))
 280         return cmd_completions(argc, argv);
 281 #endif
 282
 283 #ifdef BCACHEFS_FUSE
 284         if (!strcmp(cmd, "fusemount"))
 285                 return cmd_fusemount(argc, argv);
 286 #endif
 287
 288         if (!strcmp(cmd, "--help")) {
 289                 usage();
 290                 return 0;
 291         }
 292
 293         printf("Unknown command %s\n", cmd);
 294 usage:
 295         usage();
 296         exit(EXIT_FAILURE);
 297 }