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
|
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <errno.h>
#include <stdio.h>
#include <sys/stat.h>
#include "alloc-util.h"
#include "crypt-util.h"
#include "hexdecoct.h"
#include "log.h"
#include "main-func.h"
#include "pretty-print.h"
#include "string-util.h"
#include "terminal-util.h"
static char *arg_root_hash = NULL;
static char *arg_data_what = NULL;
static char *arg_hash_what = NULL;
STATIC_DESTRUCTOR_REGISTER(arg_root_hash, freep);
STATIC_DESTRUCTOR_REGISTER(arg_data_what, freep);
STATIC_DESTRUCTOR_REGISTER(arg_hash_what, freep);
static int help(void) {
_cleanup_free_ char *link = NULL;
int r;
r = terminal_urlify_man("systemd-veritysetup@.service", "8", &link);
if (r < 0)
return log_oom();
printf("%s attach VOLUME DATADEVICE HASHDEVICE ROOTHASH\n"
"%s detach VOLUME\n\n"
"Attaches or detaches an integrity protected block device.\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, program_invocation_short_name
, link
);
return 0;
}
static int run(int argc, char *argv[]) {
_cleanup_(crypt_freep) struct crypt_device *cd = NULL;
int r;
if (argc <= 1)
return help();
if (argc < 3)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program requires at least two arguments.");
log_setup_service();
umask(0022);
if (streq(argv[1], "attach")) {
_cleanup_free_ void *m = NULL;
crypt_status_info status;
size_t l;
if (argc < 6)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "attach requires at least two arguments.");
r = unhexmem(argv[5], strlen(argv[5]), &m, &l);
if (r < 0)
return log_error_errno(r, "Failed to parse root hash: %m");
r = crypt_init(&cd, argv[4]);
if (r < 0)
return log_error_errno(r, "Failed to open verity device %s: %m", argv[4]);
crypt_set_log_callback(cd, cryptsetup_log_glue, NULL);
status = crypt_status(cd, argv[2]);
if (IN_SET(status, CRYPT_ACTIVE, CRYPT_BUSY)) {
log_info("Volume %s already active.", argv[2]);
return 0;
}
r = crypt_load(cd, CRYPT_VERITY, NULL);
if (r < 0)
return log_error_errno(r, "Failed to load verity superblock: %m");
r = crypt_set_data_device(cd, argv[3]);
if (r < 0)
return log_error_errno(r, "Failed to configure data device: %m");
r = crypt_activate_by_volume_key(cd, argv[2], m, l, CRYPT_ACTIVATE_READONLY);
if (r < 0)
return log_error_errno(r, "Failed to set up verity device: %m");
} else if (streq(argv[1], "detach")) {
r = crypt_init_by_name(&cd, argv[2]);
if (r == -ENODEV) {
log_info("Volume %s already inactive.", argv[2]);
return 0;
}
if (r < 0)
return log_error_errno(r, "crypt_init_by_name() failed: %m");
crypt_set_log_callback(cd, cryptsetup_log_glue, NULL);
r = crypt_deactivate(cd, argv[2]);
if (r < 0)
return log_error_errno(r, "Failed to deactivate: %m");
} else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown verb %s.", argv[1]);
return 0;
}
DEFINE_MAIN_FUNCTION(run);
|
