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              "  assemble             Assemble an existing multi device filesystem\n"
  40              "  incremental          Incrementally assemble an existing multi device filesystem\n"
  41              "  run                  Start a partially assembled filesystem\n"
  42              "  stop                   Stop a running filesystem\n"
  43              "\n"
  44              "Commands for managing a running filesystem:\n"
  45              "  fs show              Show various information about a filesystem\n"
  46              "  fs set               Modify filesystem options\n"
  47              "\n"
  48              "Commands for managing devices within a running filesystem:\n"
  49              "  device add           Add a new device to an existing filesystem\n"
  50              "  device remove        Remove a device from an existing filesystem\n"
  51              "  device online        Re-add an existing member to a filesystem\n"
  52              "  device offline       Take a device offline, without removing it\n"
  53              "  device evacuate      Migrate data off of a specific device\n"
  54              "  device set-state     Mark a device as failed\n"
  55              "\n"
  56              "Encryption:\n"
  57              "  unlock               Unlock an encrypted filesystem prior to running/mounting\n"
  58              "  set-passphrase       Change passphrase on an existing (unmounted) filesystem\n"
  59              "  remove-passphrase    Remove passphrase on an existing (unmounted) filesystem\n"
  60              "\n"
  61              "Migrate:\n"
  62              "  migrate              Migrate an existing filesystem to bcachefs, in place\n"
  63              "  migrate-superblock   Add default superblock, after bcachefs migrate\n"
  64              "\n"
  65              "Debug:\n"
  66              "These commands work on offline, unmounted filesystems\n"
  67              "  dump                 Dump filesystem metadata to a qcow2 image\n"
  68              "  list                 List filesystem metadata in textual form\n");
  69 }
  70
  71 static char *full_cmd;
  72
  73 static char *pop_cmd(int *argc, char *argv[])
  74 {
  75         if (*argc < 2) {
  76                 printf("%s: missing command\n", argv[0]);
  77                 usage();
  78                 exit(EXIT_FAILURE);
  79         }
  80
  81         char *cmd = argv[1];
  82         memmove(&argv[1], &argv[2], *argc * sizeof(argv[0]));
  83         (*argc)--;
  84
  85         full_cmd = mprintf("%s %s", full_cmd, cmd);
  86         return cmd;
  87 }
  88
  89 static int fs_cmds(int argc, char *argv[])
  90 {
  91         char *cmd = pop_cmd(&argc, argv);
  92
  93         if (!strcmp(cmd, "show"))
  94                 return cmd_fs_show(argc, argv);
  95         if (!strcmp(cmd, "set"))
  96                 return cmd_fs_set(argc, argv);
  97
  98         usage();
  99         return 0;
 100 }
 101
 102 static int device_cmds(int argc, char *argv[])
 103 {
 104         char *cmd = pop_cmd(&argc, argv);
 105
 106         if (!strcmp(cmd, "add"))
 107                 return cmd_device_add(argc, argv);
 108         if (!strcmp(cmd, "remove"))
 109                 return cmd_device_remove(argc, argv);
 110         if (!strcmp(cmd, "online"))
 111                 return cmd_device_online(argc, argv);
 112         if (!strcmp(cmd, "offline"))
 113                 return cmd_device_offline(argc, argv);
 114         if (!strcmp(cmd, "evacuate"))
 115                 return cmd_device_offline(argc, argv);
 116         if (!strcmp(cmd, "set-state"))
 117                 return cmd_device_set_state(argc, argv);
 118
 119         usage();
 120         return 0;
 121 }
 122
 123 int main(int argc, char *argv[])
 124 {
 125         full_cmd = argv[0];
 126
 127         setvbuf(stdout, NULL, _IOLBF, 0);
 128
 129         char *cmd = pop_cmd(&argc, argv);
 130
 131         if (!strcmp(cmd, "format"))
 132                 return cmd_format(argc, argv);
 133         if (!strcmp(cmd, "show-super"))
 134                 return cmd_show_super(argc, argv);
 135
 136         if (!strcmp(cmd, "fsck"))
 137                 return cmd_fsck(argc, argv);
 138
 139         if (!strcmp(cmd, "assemble"))
 140                 return cmd_assemble(argc, argv);
 141         if (!strcmp(cmd, "incremental"))
 142                 return cmd_incremental(argc, argv);
 143         if (!strcmp(cmd, "run"))
 144                 return cmd_run(argc, argv);
 145         if (!strcmp(cmd, "stop"))
 146                 return cmd_stop(argc, argv);
 147
 148         if (!strcmp(cmd, "fs"))
 149                 return fs_cmds(argc, argv);
 150
 151         if (!strcmp(cmd, "device"))
 152                 return device_cmds(argc, argv);
 153
 154         if (!strcmp(cmd, "unlock"))
 155                 return cmd_unlock(argc, argv);
 156         if (!strcmp(cmd, "set-passphrase"))
 157                 return cmd_set_passphrase(argc, argv);
 158         if (!strcmp(cmd, "remove-passphrase"))
 159                 return cmd_remove_passphrase(argc, argv);
 160
 161         if (!strcmp(cmd, "migrate"))
 162                 return cmd_migrate(argc, argv);
 163         if (!strcmp(cmd, "migrate-superblock"))
 164                 return cmd_migrate_superblock(argc, argv);
 165
 166         if (!strcmp(cmd, "dump"))
 167                 return cmd_dump(argc, argv);
 168         if (!strcmp(cmd, "list"))
 169                 return cmd_list(argc, argv);
 170
 171         printf("Unknown command %s\n", cmd);
 172         usage();
 173         exit(EXIT_FAILURE);
 174 }