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 "cmds.h"
  25
  26 static void usage(void)
  27 {
  28         puts("bcachefs - tool for managing bcachefs filesystems\n"
  29              "usage: bcachefs <command> [<args>]\n"
  30              "\n"
  31              "Superblock commands:\n"
  32              "  format               Format a new filesystem\n"
  33              "  show-super           Dump superblock information to stdout\n"
  34              "\n"
  35              "Repair:\n"
  36              "  fsck                 Check an existing filesystem for errors\n"
  37              "\n"
  38              "Startup/shutdown, assembly of multi device filesystems:\n"
  39 #if 0
  40              "  assemble             Assemble an existing multi device filesystem\n"
  41              "  incremental          Incrementally assemble an existing multi device filesystem\n"
  42              "  run                  Start a partially assembled filesystem\n"
  43              "  stop                   Stop a running filesystem\n"
  44 #endif
  45              "\n"
  46              "Commands for managing a running filesystem:\n"
  47              "  fs usage             Show disk usage\n"
  48              "\n"
  49              "Commands for managing devices within a running filesystem:\n"
  50              "  device add           Add a new device to an existing filesystem\n"
  51              "  device remove        Remove a device from an existing filesystem\n"
  52              "  device online        Re-add an existing member to a filesystem\n"
  53              "  device offline       Take a device offline, without removing it\n"
  54              "  device evacuate      Migrate data off of a specific device\n"
  55              "  device set-state     Mark a device as failed\n"
  56              "  device resize        Resize filesystem on a device\n"
  57              "\n"
  58              "Commands for managing filesystem data:\n"
  59              "  data rereplicate     Rereplicate degraded data\n"
  60              "\n"
  61              "Encryption:\n"
  62              "  unlock               Unlock an encrypted filesystem prior to running/mounting\n"
  63              "  set-passphrase       Change passphrase on an existing (unmounted) filesystem\n"
  64              "  remove-passphrase    Remove passphrase on an existing (unmounted) filesystem\n"
  65              "\n"
  66              "Migrate:\n"
  67              "  migrate              Migrate an existing filesystem to bcachefs, in place\n"
  68              "  migrate-superblock   Add default superblock, after bcachefs migrate\n"
  69              "\n"
  70              "Debug:\n"
  71              "These commands work on offline, unmounted filesystems\n"
  72              "  dump                 Dump filesystem metadata to a qcow2 image\n"
  73              "  list                 List filesystem metadata in textual form\n"
  74              "\n"
  75              "Miscellaneous:\n"
  76              "  version              Display the version of the invoked bcachefs tool\n");
  77 }
  78
  79 static char *full_cmd;
  80
  81 static char *pop_cmd(int *argc, char *argv[])
  82 {
  83         if (*argc < 2) {
  84                 printf("%s: missing command\n", argv[0]);
  85                 usage();
  86                 exit(EXIT_FAILURE);
  87         }
  88
  89         char *cmd = argv[1];
  90         memmove(&argv[1], &argv[2], *argc * sizeof(argv[0]));
  91         (*argc)--;
  92
  93         full_cmd = mprintf("%s %s", full_cmd, cmd);
  94         return cmd;
  95 }
  96
  97 static int fs_cmds(int argc, char *argv[])
  98 {
  99         char *cmd = pop_cmd(&argc, argv);
 100
 101         if (!strcmp(cmd, "usage"))
 102                 return cmd_fs_usage(argc, argv);
 103
 104         usage();
 105         return 0;
 106 }
 107
 108 static int device_cmds(int argc, char *argv[])
 109 {
 110         char *cmd = pop_cmd(&argc, argv);
 111
 112         if (!strcmp(cmd, "add"))
 113                 return cmd_device_add(argc, argv);
 114         if (!strcmp(cmd, "remove"))
 115                 return cmd_device_remove(argc, argv);
 116         if (!strcmp(cmd, "online"))
 117                 return cmd_device_online(argc, argv);
 118         if (!strcmp(cmd, "offline"))
 119                 return cmd_device_offline(argc, argv);
 120         if (!strcmp(cmd, "evacuate"))
 121                 return cmd_device_evacuate(argc, argv);
 122         if (!strcmp(cmd, "set-state"))
 123                 return cmd_device_set_state(argc, argv);
 124         if (!strcmp(cmd, "resize"))
 125                 return cmd_device_resize(argc, argv);
 126
 127         usage();
 128         return 0;
 129 }
 130
 131 static int data_cmds(int argc, char *argv[])
 132 {
 133         char *cmd = pop_cmd(&argc, argv);
 134
 135         if (!strcmp(cmd, "rereplicate"))
 136                 return cmd_data_rereplicate(argc, argv);
 137
 138         usage();
 139         return 0;
 140 }
 141
 142 int main(int argc, char *argv[])
 143 {
 144         full_cmd = argv[0];
 145
 146         setvbuf(stdout, NULL, _IOLBF, 0);
 147
 148         char *cmd = pop_cmd(&argc, argv);
 149
 150         if (!strcmp(cmd, "version"))
 151                 return cmd_version(argc, argv);
 152         if (!strcmp(cmd, "format"))
 153                 return cmd_format(argc, argv);
 154         if (!strcmp(cmd, "show-super"))
 155                 return cmd_show_super(argc, argv);
 156
 157         if (!strcmp(cmd, "fsck"))
 158                 return cmd_fsck(argc, argv);
 159
 160 #if 0
 161         if (!strcmp(cmd, "assemble"))
 162                 return cmd_assemble(argc, argv);
 163         if (!strcmp(cmd, "incremental"))
 164                 return cmd_incremental(argc, argv);
 165         if (!strcmp(cmd, "run"))
 166                 return cmd_run(argc, argv);
 167         if (!strcmp(cmd, "stop"))
 168                 return cmd_stop(argc, argv);
 169 #endif
 170
 171         if (!strcmp(cmd, "fs"))
 172                 return fs_cmds(argc, argv);
 173
 174         if (!strcmp(cmd, "device"))
 175                 return device_cmds(argc, argv);
 176
 177         if (!strcmp(cmd, "data"))
 178                 return data_cmds(argc, argv);
 179
 180         if (!strcmp(cmd, "unlock"))
 181                 return cmd_unlock(argc, argv);
 182         if (!strcmp(cmd, "set-passphrase"))
 183                 return cmd_set_passphrase(argc, argv);
 184         if (!strcmp(cmd, "remove-passphrase"))
 185                 return cmd_remove_passphrase(argc, argv);
 186
 187         if (!strcmp(cmd, "migrate"))
 188                 return cmd_migrate(argc, argv);
 189         if (!strcmp(cmd, "migrate-superblock"))
 190                 return cmd_migrate_superblock(argc, argv);
 191
 192         if (!strcmp(cmd, "dump"))
 193                 return cmd_dump(argc, argv);
 194         if (!strcmp(cmd, "list"))
 195                 return cmd_list(argc, argv);
 196
 197         if (!strcmp(cmd, "--help")) {
 198                 usage();
 199                 return 0;
 200         }
 201
 202         printf("Unknown command %s\n", cmd);
 203         usage();
 204         exit(EXIT_FAILURE);
 205 }