1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* 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 "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"
"\n"
"Repair:\n"
" fsck Check an existing filesystem for errors\n"
"\n"
"Startup/shutdown, assembly of multi device filesystems:\n"
#if 0
" 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"
#endif
"\n"
"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"
"\n"
"Commands for managing filesystem data:\n"
" data rereplicate Rereplicate degraded data\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"
"Debug:\n"
"These commands work on offline, unmounted filesystems\n"
" dump Dump filesystem metadata to a qcow2 image\n"
" list List filesystem metadata in textual form\n"
"\n"
"Miscellaneous:\n"
" version Display the version of the invoked bcachefs tool\n");
}
static char *full_cmd;
static char *pop_cmd(int *argc, char *argv[])
{
if (*argc < 2) {
printf("%s: missing command\n", argv[0]);
usage();
exit(EXIT_FAILURE);
}
char *cmd = argv[1];
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 (!strcmp(cmd, "usage"))
return cmd_fs_usage(argc, argv);
usage();
return 0;
}
static int device_cmds(int argc, char *argv[])
{
char *cmd = pop_cmd(&argc, argv);
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);
usage();
return 0;
}
static int data_cmds(int argc, char *argv[])
{
char *cmd = pop_cmd(&argc, argv);
if (!strcmp(cmd, "rereplicate"))
return cmd_data_rereplicate(argc, argv);
usage();
return 0;
}
int main(int argc, char *argv[])
{
full_cmd = argv[0];
setvbuf(stdout, NULL, _IOLBF, 0);
char *cmd = pop_cmd(&argc, argv);
if (!strcmp(cmd, "version"))
return cmd_version(argc, argv);
if (!strcmp(cmd, "format"))
return cmd_format(argc, argv);
if (!strcmp(cmd, "show-super"))
return cmd_show_super(argc, argv);
if (!strcmp(cmd, "fsck"))
return cmd_fsck(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, "fs"))
return fs_cmds(argc, argv);
if (!strcmp(cmd, "device"))
return device_cmds(argc, argv);
if (!strcmp(cmd, "data"))
return data_cmds(argc, argv);
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);
if (!strcmp(cmd, "list"))
return cmd_list(argc, argv);
printf("Unknown command %s\n", cmd);
usage();
exit(EXIT_FAILURE);
}
|
