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 journal-resize    Resize journal on a device\n"
  60              "\n"
  61              "Commands for managing filesystem data:\n"
  62              "  data rereplicate         Rereplicate degraded data\n"
  63              "  data job                 Kick off low level data jobs\n"
  64              "\n"
  65              "Encryption:\n"
  66              "  unlock                   Unlock an encrypted filesystem prior to running/mounting\n"
  67              "  set-passphrase           Change passphrase on an existing (unmounted) filesystem\n"
  68              "  remove-passphrase        Remove passphrase on an existing (unmounted) filesystem\n"
  69              "\n"
  70              "Migrate:\n"
  71              "  migrate                  Migrate an existing filesystem to bcachefs, in place\n"
  72              "  migrate-superblock       Add default superblock, after bcachefs migrate\n"
  73              "\n"
  74              "Commands for operating on files in a bcachefs filesystem:\n"
  75              "  setattr                  Set various per file attributes\n"
  76              "Debug:\n"
  77              "These commands work on offline, unmounted filesystems\n"
  78              "  dump                     Dump filesystem metadata to a qcow2 image\n"
  79              "  list                     List filesystem metadata in textual form\n"
  80              "  list_journal             List contents of journal\n"
  81              "\n"
  82              "Miscellaneous:\n"
  83              "  version                  Display the version of the invoked bcachefs tool\n");
  84 }
  85
  86 static char *full_cmd;
  87
  88 static char *pop_cmd(int *argc, char *argv[])
  89 {
  90         if (*argc < 2) {
  91                 printf("%s: missing command\n", argv[0]);
  92                 usage();
  93                 exit(EXIT_FAILURE);
  94         }
  95
  96         char *cmd = argv[1];
  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 (!strcmp(cmd, "usage"))
 109                 return cmd_fs_usage(argc, argv);
 110
 111         usage();
 112         return 0;
 113 }
 114
 115 static int device_cmds(int argc, char *argv[])
 116 {
 117         char *cmd = pop_cmd(&argc, argv);
 118
 119         if (!strcmp(cmd, "add"))
 120                 return cmd_device_add(argc, argv);
 121         if (!strcmp(cmd, "remove"))
 122                 return cmd_device_remove(argc, argv);
 123         if (!strcmp(cmd, "online"))
 124                 return cmd_device_online(argc, argv);
 125         if (!strcmp(cmd, "offline"))
 126                 return cmd_device_offline(argc, argv);
 127         if (!strcmp(cmd, "evacuate"))
 128                 return cmd_device_evacuate(argc, argv);
 129         if (!strcmp(cmd, "set-state"))
 130                 return cmd_device_set_state(argc, argv);
 131         if (!strcmp(cmd, "resize"))
 132                 return cmd_device_resize(argc, argv);
 133         if (!strcmp(cmd, "resize-journal"))
 134                 return cmd_device_resize_journal(argc, argv);
 135
 136         usage();
 137         return 0;
 138 }
 139
 140 static int data_cmds(int argc, char *argv[])
 141 {
 142         char *cmd = pop_cmd(&argc, argv);
 143
 144         if (!strcmp(cmd, "rereplicate"))
 145                 return cmd_data_rereplicate(argc, argv);
 146         if (!strcmp(cmd, "job"))
 147                 return cmd_data_job(argc, argv);
 148
 149         usage();
 150         return 0;
 151 }
 152
 153 int main(int argc, char *argv[])
 154 {
 155         raid_init();
 156
 157         full_cmd = argv[0];
 158
 159         setvbuf(stdout, NULL, _IOLBF, 0);
 160
 161         char *cmd = pop_cmd(&argc, argv);
 162
 163         if (!strcmp(cmd, "version"))
 164                 return cmd_version(argc, argv);
 165         if (!strcmp(cmd, "format"))
 166                 return cmd_format(argc, argv);
 167         if (!strcmp(cmd, "show-super"))
 168                 return cmd_show_super(argc, argv);
 169
 170         if (!strcmp(cmd, "fsck"))
 171                 return cmd_fsck(argc, argv);
 172
 173 #if 0
 174         if (!strcmp(cmd, "assemble"))
 175                 return cmd_assemble(argc, argv);
 176         if (!strcmp(cmd, "incremental"))
 177                 return cmd_incremental(argc, argv);
 178         if (!strcmp(cmd, "run"))
 179                 return cmd_run(argc, argv);
 180         if (!strcmp(cmd, "stop"))
 181                 return cmd_stop(argc, argv);
 182 #endif
 183
 184         if (!strcmp(cmd, "fs"))
 185                 return fs_cmds(argc, argv);
 186
 187         if (!strcmp(cmd, "device"))
 188                 return device_cmds(argc, argv);
 189
 190         if (!strcmp(cmd, "data"))
 191                 return data_cmds(argc, argv);
 192
 193         if (!strcmp(cmd, "unlock"))
 194                 return cmd_unlock(argc, argv);
 195         if (!strcmp(cmd, "set-passphrase"))
 196                 return cmd_set_passphrase(argc, argv);
 197         if (!strcmp(cmd, "remove-passphrase"))
 198                 return cmd_remove_passphrase(argc, argv);
 199
 200         if (!strcmp(cmd, "migrate"))
 201                 return cmd_migrate(argc, argv);
 202         if (!strcmp(cmd, "migrate-superblock"))
 203                 return cmd_migrate_superblock(argc, argv);
 204
 205         if (!strcmp(cmd, "dump"))
 206                 return cmd_dump(argc, argv);
 207         if (!strcmp(cmd, "list"))
 208                 return cmd_list(argc, argv);
 209         if (!strcmp(cmd, "list_journal"))
 210                 return cmd_list_journal(argc, argv);
 211
 212         if (!strcmp(cmd, "setattr"))
 213                 return cmd_setattr(argc, argv);
 214
 215 #ifdef BCACHEFS_FUSE
 216         if (!strcmp(cmd, "fusemount"))
 217                 return cmd_fusemount(argc, argv);
 218 #endif
 219
 220         if (!strcmp(cmd, "--help")) {
 221                 usage();
 222                 return 0;
 223         }
 224
 225         printf("Unknown command %s\n", cmd);
 226         usage();
 227         exit(EXIT_FAILURE);
 228 }