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/*
* Authors: Kent Overstreet <kent.overstreet@gmail.com>
* Gabriel de Perthuis <g2p.code@gmail.com>
* Jacob Malevich <jam@datera.io>
*
* GPLv2
*/
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <inttypes.h>
#include <limits.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <raid/raid.h>
#include "cmds.h"
static void usage(void)
{
puts("bcachefs - tool for managing bcachefs filesystems\n"
"usage: bcachefs <command> [<args>]\n"
"\n"
"Superblock commands:\n"
" format Format a new filesystem\n"
" show-super Dump superblock information to stdout\n"
" set-option Set a filesystem option\n"
"\n"
#ifndef BCACHEFS_NO_RUST
"Mount:\n"
" mount Mount a filesystem\n"
"\n"
#endif
"Repair:\n"
" fsck Check an existing filesystem for errors\n"
"\n"
#if 0
"Startup/shutdown, assembly of multi device filesystems:\n"
" assemble Assemble an existing multi device filesystem\n"
" incremental Incrementally assemble an existing multi device filesystem\n"
" run Start a partially assembled filesystem\n"
" stop Stop a running filesystem\n"
"\n"
#endif
"Commands for managing a running filesystem:\n"
" fs usage Show disk usage\n"
"\n"
"Commands for managing devices within a running filesystem:\n"
" device add Add a new device to an existing filesystem\n"
" device remove Remove a device from an existing filesystem\n"
" device online Re-add an existing member to a filesystem\n"
" device offline Take a device offline, without removing it\n"
" device evacuate Migrate data off of a specific device\n"
" device set-state Mark a device as failed\n"
" device resize Resize filesystem on a device\n"
" device resize-journal Resize journal on a device\n"
"\n"
"Commands for managing subvolumes and snapshots:\n"
" subvolume create Create a new subvolume\n"
" subvolume delete Delete an existing subvolume\n"
" subvolume snapshot Create a snapshot\n"
"\n"
"Commands for managing filesystem data:\n"
" data rereplicate Rereplicate degraded data\n"
" data job Kick off low level data jobs\n"
"\n"
"Encryption:\n"
" unlock Unlock an encrypted filesystem prior to running/mounting\n"
" set-passphrase Change passphrase on an existing (unmounted) filesystem\n"
" remove-passphrase Remove passphrase on an existing (unmounted) filesystem\n"
"\n"
"Migrate:\n"
" migrate Migrate an existing filesystem to bcachefs, in place\n"
" migrate-superblock Add default superblock, after bcachefs migrate\n"
"\n"
"Commands for operating on files in a bcachefs filesystem:\n"
" setattr Set various per file attributes\n"
"\n"
"Debug:\n"
"These commands work on offline, unmounted filesystems\n"
" dump Dump filesystem metadata to a qcow2 image\n"
#ifndef BCACHEFS_NO_RUST
" list List filesystem metadata in textual form\n"
#endif
" list_journal List contents of journal\n"
"\n"
"FUSE:\n"
" fusemount Mount a filesystem via FUSE\n"
"\n"
"Miscellaneous:\n"
#ifndef BCACHEFS_NO_RUST
" completions Generate shell completions\n"
#endif
" version Display the version of the invoked bcachefs tool\n");
}
static char *full_cmd;
static char *pop_cmd(int *argc, char *argv[])
{
char *cmd = argv[1];
if (!(*argc < 2))
memmove(&argv[1], &argv[2], *argc * sizeof(argv[0]));
(*argc)--;
full_cmd = mprintf("%s %s", full_cmd, cmd);
return cmd;
}
static int fs_cmds(int argc, char *argv[])
{
char *cmd = pop_cmd(&argc, argv);
if (argc < 1) {
usage();
exit(EXIT_FAILURE);
}
if (!strcmp(cmd, "usage"))
return cmd_fs_usage(argc, argv);
return 0;
}
static int device_cmds(int argc, char *argv[])
{
char *cmd = pop_cmd(&argc, argv);
if (argc < 1)
return device_usage();
if (!strcmp(cmd, "add"))
return cmd_device_add(argc, argv);
if (!strcmp(cmd, "remove"))
return cmd_device_remove(argc, argv);
if (!strcmp(cmd, "online"))
return cmd_device_online(argc, argv);
if (!strcmp(cmd, "offline"))
return cmd_device_offline(argc, argv);
if (!strcmp(cmd, "evacuate"))
return cmd_device_evacuate(argc, argv);
if (!strcmp(cmd, "set-state"))
return cmd_device_set_state(argc, argv);
if (!strcmp(cmd, "resize"))
return cmd_device_resize(argc, argv);
if (!strcmp(cmd, "resize-journal"))
return cmd_device_resize_journal(argc, argv);
return 0;
}
static int data_cmds(int argc, char *argv[])
{
char *cmd = pop_cmd(&argc, argv);
if (argc < 1)
return data_usage();
if (!strcmp(cmd, "rereplicate"))
return cmd_data_rereplicate(argc, argv);
if (!strcmp(cmd, "job"))
return cmd_data_job(argc, argv);
return 0;
}
static int subvolume_cmds(int argc, char *argv[])
{
char *cmd = pop_cmd(&argc, argv);
if (argc < 1)
return subvolume_usage();
if (!strcmp(cmd, "create"))
return cmd_subvolume_create(argc, argv);
if (!strcmp(cmd, "delete"))
return cmd_subvolume_delete(argc, argv);
if (!strcmp(cmd, "snapshot"))
return cmd_subvolume_snapshot(argc, argv);
return 0;
}
int main(int argc, char *argv[])
{
/* we don't want to swap */
mlockall(MCL_FUTURE);
raid_init();
full_cmd = argv[0];
/* Are we being called via a symlink? */
if (strstr(full_cmd, "mkfs"))
return cmd_format(argc, argv);
if (strstr(full_cmd, "fsck"))
return cmd_fsck(argc, argv);
#ifdef BCACHEFS_FUSE
if (strstr(full_cmd, "mount.fuse"))
return cmd_fusemount(argc, argv);
#endif
#ifndef BCACHEFS_NO_RUST
if (strstr(full_cmd, "mount"))
return cmd_mount(argc, argv);
#endif
setvbuf(stdout, NULL, _IOLBF, 0);
char *cmd = pop_cmd(&argc, argv);
if (!cmd) {
puts("missing command\n");
goto usage;
}
/* these subcommands display usage when argc < 2 */
if (!strcmp(cmd, "device"))
return device_cmds(argc, argv);
if (!strcmp(cmd, "fs"))
return fs_cmds(argc, argv);
if (!strcmp(cmd, "data"))
return data_cmds(argc, argv);
if (!strcmp(cmd, "subvolume"))
return subvolume_cmds(argc, argv);
if (!strcmp(cmd, "format"))
return cmd_format(argc, argv);
if (!strcmp(cmd, "fsck"))
return cmd_fsck(argc, argv);
if (!strcmp(cmd, "version"))
return cmd_version(argc, argv);
if (!strcmp(cmd, "show-super"))
return cmd_show_super(argc, argv);
if (!strcmp(cmd, "set-option"))
return cmd_set_option(argc, argv);
#if 0
if (!strcmp(cmd, "assemble"))
return cmd_assemble(argc, argv);
if (!strcmp(cmd, "incremental"))
return cmd_incremental(argc, argv);
if (!strcmp(cmd, "run"))
return cmd_run(argc, argv);
if (!strcmp(cmd, "stop"))
return cmd_stop(argc, argv);
#endif
if (!strcmp(cmd, "unlock"))
return cmd_unlock(argc, argv);
if (!strcmp(cmd, "set-passphrase"))
return cmd_set_passphrase(argc, argv);
if (!strcmp(cmd, "remove-passphrase"))
return cmd_remove_passphrase(argc, argv);
if (!strcmp(cmd, "migrate"))
return cmd_migrate(argc, argv);
if (!strcmp(cmd, "migrate-superblock"))
return cmd_migrate_superblock(argc, argv);
if (!strcmp(cmd, "dump"))
return cmd_dump(argc, argv);
#ifndef BCACHEFS_NO_RUST
if (!strcmp(cmd, "list"))
return cmd_list(argc, argv);
#endif
if (!strcmp(cmd, "list_journal"))
return cmd_list_journal(argc, argv);
if (!strcmp(cmd, "kill_btree_node"))
return cmd_kill_btree_node(argc, argv);
if (!strcmp(cmd, "setattr"))
return cmd_setattr(argc, argv);
#ifndef BCACHEFS_NO_RUST
if (!strcmp(cmd, "mount"))
return cmd_mount(argc, argv);
if (strstr(cmd, "completions"))
return cmd_completions(argc, argv);
#endif
#ifdef BCACHEFS_FUSE
if (!strcmp(cmd, "fusemount"))
return cmd_fusemount(argc, argv);
#endif
if (!strcmp(cmd, "--help")) {
usage();
return 0;
}
printf("Unknown command %s\n", cmd);
usage:
usage();
exit(EXIT_FAILURE);
}
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