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