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