git.sesse.net Git - bcachefs-tools-debian/blob - c_src/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 void bcachefs_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              "  reset-counters           Reset all counters on an unmounted device\n"
  38              "\n"
  39              "Mount:\n"
  40              "  mount                    Mount a filesystem\n"
  41              "\n"
  42              "Repair:\n"
  43              "  fsck                     Check an existing filesystem for errors\n"
  44              "\n"
  45 #if 0
  46              "Startup/shutdown, assembly of multi device filesystems:\n"
  47              "  assemble                 Assemble an existing multi device filesystem\n"
  48              "  incremental              Incrementally assemble an existing multi device filesystem\n"
  49              "  run                      Start a partially assembled filesystem\n"
  50              "  stop                     Stop a running filesystem\n"
  51              "\n"
  52 #endif
  53              "Commands for managing a running filesystem:\n"
  54              "  fs usage                 Show disk usage\n"
  55              "\n"
  56              "Commands for managing devices within a running filesystem:\n"
  57              "  device add               Add a new device to an existing filesystem\n"
  58              "  device remove            Remove a device from an existing filesystem\n"
  59              "  device online            Re-add an existing member to a filesystem\n"
  60              "  device offline           Take a device offline, without removing it\n"
  61              "  device evacuate          Migrate data off of a specific device\n"
  62              "  device set-state         Mark a device as failed\n"
  63              "  device resize            Resize filesystem on a device\n"
  64              "  device resize-journal    Resize journal on a device\n"
  65              "\n"
  66              "Commands for managing subvolumes and snapshots:\n"
  67              "  subvolume create         Create a new subvolume\n"
  68              "  subvolume delete         Delete an existing subvolume\n"
  69              "  subvolume snapshot       Create a snapshot\n"
  70              "\n"
  71              "Commands for managing filesystem data:\n"
  72              "  data rereplicate         Rereplicate degraded data\n"
  73              "  data job                 Kick off low level data jobs\n"
  74              "\n"
  75              "Encryption:\n"
  76              "  unlock                   Unlock an encrypted filesystem prior to running/mounting\n"
  77              "  set-passphrase           Change passphrase on an existing (unmounted) filesystem\n"
  78              "  remove-passphrase        Remove passphrase on an existing (unmounted) filesystem\n"
  79              "\n"
  80              "Migrate:\n"
  81              "  migrate                  Migrate an existing filesystem to bcachefs, in place\n"
  82              "  migrate-superblock       Add default superblock, after bcachefs migrate\n"
  83              "\n"
  84              "Commands for operating on files in a bcachefs filesystem:\n"
  85              "  setattr                  Set various per file attributes\n"
  86              "\n"
  87              "Debug:\n"
  88              "These commands work on offline, unmounted filesystems\n"
  89              "  dump                     Dump filesystem metadata to a qcow2 image\n"
  90              "  list                     List filesystem metadata in textual form\n"
  91              "  list_journal             List contents of journal\n"
  92              "\n"
  93              "FUSE:\n"
  94              "  fusemount                Mount a filesystem via FUSE\n"
  95              "\n"
  96              "Miscellaneous:\n"
  97          "  completions              Generate shell completions\n"
  98              "  version                  Display the version of the invoked bcachefs tool\n");
  99 }
 100
 101 static char *pop_cmd(int *argc, char *argv[])
 102 {
 103         char *cmd = argv[1];
 104         if (!(*argc < 2))
 105                 memmove(&argv[1], &argv[2], (*argc - 2) * sizeof(argv[0]));
 106         (*argc)--;
 107         argv[*argc] = NULL;
 108
 109         return cmd;
 110 }
 111
 112 int fs_cmds(int argc, char *argv[])
 113 {
 114         char *cmd = pop_cmd(&argc, argv);
 115
 116         if (argc < 1) {
 117                 bcachefs_usage();
 118                 exit(EXIT_FAILURE);
 119         }
 120         if (!strcmp(cmd, "usage"))
 121                 return cmd_fs_usage(argc, argv);
 122
 123         return 0;
 124 }
 125
 126 int device_cmds(int argc, char *argv[])
 127 {
 128         char *cmd = pop_cmd(&argc, argv);
 129
 130         if (argc < 1)
 131                 return device_usage();
 132         if (!strcmp(cmd, "add"))
 133                 return cmd_device_add(argc, argv);
 134         if (!strcmp(cmd, "remove"))
 135                 return cmd_device_remove(argc, argv);
 136         if (!strcmp(cmd, "online"))
 137                 return cmd_device_online(argc, argv);
 138         if (!strcmp(cmd, "offline"))
 139                 return cmd_device_offline(argc, argv);
 140         if (!strcmp(cmd, "evacuate"))
 141                 return cmd_device_evacuate(argc, argv);
 142         if (!strcmp(cmd, "set-state"))
 143                 return cmd_device_set_state(argc, argv);
 144         if (!strcmp(cmd, "resize"))
 145                 return cmd_device_resize(argc, argv);
 146         if (!strcmp(cmd, "resize-journal"))
 147                 return cmd_device_resize_journal(argc, argv);
 148
 149         return 0;
 150 }
 151
 152 int data_cmds(int argc, char *argv[])
 153 {
 154         char *cmd = pop_cmd(&argc, argv);
 155
 156         if (argc < 1)
 157                 return data_usage();
 158         if (!strcmp(cmd, "rereplicate"))
 159                 return cmd_data_rereplicate(argc, argv);
 160         if (!strcmp(cmd, "job"))
 161                 return cmd_data_job(argc, argv);
 162
 163         return 0;
 164 }