19020191358

Committed 02 Nov 2025 05:04PM UTC coverage: 72.222% (-0.02%) from 72.241%

Build # 19020191358

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Enhance docs for ukify and direct kernel boots (#39516)

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85.71

/src/shared/cryptsetup-util.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <stdlib.h>

#include "sd-json.h"

#include "alloc-util.h"
#include "cryptsetup-util.h"
#include "dlfcn-util.h"
#include "log.h"
#include "parse-util.h"
#include "string-util.h"
#include "strv.h"

#if HAVE_LIBCRYPTSETUP
static void *cryptsetup_dl = NULL;

DLSYM_PROTOTYPE(crypt_activate_by_passphrase) = NULL;
DLSYM_PROTOTYPE(crypt_activate_by_signed_key) = NULL;
DLSYM_PROTOTYPE(crypt_activate_by_volume_key) = NULL;
DLSYM_PROTOTYPE(crypt_deactivate_by_name) = NULL;
DLSYM_PROTOTYPE(crypt_format) = NULL;
DLSYM_PROTOTYPE(crypt_free) = NULL;
DLSYM_PROTOTYPE(crypt_get_cipher) = NULL;
DLSYM_PROTOTYPE(crypt_get_cipher_mode) = NULL;
DLSYM_PROTOTYPE(crypt_get_data_offset) = NULL;
DLSYM_PROTOTYPE(crypt_get_device_name) = NULL;
DLSYM_PROTOTYPE(crypt_get_dir) = NULL;
DLSYM_PROTOTYPE(crypt_get_type) = NULL;
DLSYM_PROTOTYPE(crypt_get_uuid) = NULL;
DLSYM_PROTOTYPE(crypt_get_verity_info) = NULL;
DLSYM_PROTOTYPE(crypt_get_volume_key_size) = NULL;
DLSYM_PROTOTYPE(crypt_header_restore) = NULL;
DLSYM_PROTOTYPE(crypt_init) = NULL;
DLSYM_PROTOTYPE(crypt_init_by_name) = NULL;
DLSYM_PROTOTYPE(crypt_keyslot_add_by_volume_key) = NULL;
DLSYM_PROTOTYPE(crypt_keyslot_destroy) = NULL;
DLSYM_PROTOTYPE(crypt_keyslot_max) = NULL;
DLSYM_PROTOTYPE(crypt_load) = NULL;
DLSYM_PROTOTYPE(crypt_metadata_locking) = NULL;
DLSYM_PROTOTYPE(crypt_reencrypt_init_by_passphrase) = NULL;
#if HAVE_CRYPT_REENCRYPT_RUN
DLSYM_PROTOTYPE(crypt_reencrypt_run);
#else
DLSYM_PROTOTYPE(crypt_reencrypt);
#endif
DLSYM_PROTOTYPE(crypt_resize) = NULL;
DLSYM_PROTOTYPE(crypt_resume_by_volume_key) = NULL;
DLSYM_PROTOTYPE(crypt_set_data_device) = NULL;
DLSYM_PROTOTYPE(crypt_set_data_offset) = NULL;
DLSYM_PROTOTYPE(crypt_set_debug_level) = NULL;
DLSYM_PROTOTYPE(crypt_set_log_callback) = NULL;
DLSYM_PROTOTYPE(crypt_set_metadata_size) = NULL;
DLSYM_PROTOTYPE(crypt_set_pbkdf_type) = NULL;
DLSYM_PROTOTYPE(crypt_suspend) = NULL;
DLSYM_PROTOTYPE(crypt_token_json_get) = NULL;
DLSYM_PROTOTYPE(crypt_token_json_set) = NULL;
#if HAVE_CRYPT_TOKEN_MAX
DLSYM_PROTOTYPE(crypt_token_max) = NULL;
#else
int crypt_token_max(_unused_ const char *type) {
    assert(streq(type, CRYPT_LUKS2));

    return 32;
}
#endif
#if HAVE_CRYPT_TOKEN_SET_EXTERNAL_PATH
DLSYM_PROTOTYPE(crypt_token_set_external_path) = NULL;
#endif
DLSYM_PROTOTYPE(crypt_token_status) = NULL;
DLSYM_PROTOTYPE(crypt_volume_key_get) = NULL;
DLSYM_PROTOTYPE(crypt_volume_key_keyring) = NULL;

static void cryptsetup_log_glue(int level, const char *msg, void *usrptr) {

        switch (level) {
        case CRYPT_LOG_NORMAL:
                level = LOG_NOTICE;
                break;
        case CRYPT_LOG_ERROR:
                level = LOG_ERR;
                break;
        case CRYPT_LOG_VERBOSE:
                level = LOG_INFO;
                break;
        case CRYPT_LOG_DEBUG:
                level = LOG_DEBUG;
                break;
        default:
                log_error("Unknown libcryptsetup log level: %d", level);
                level = LOG_ERR;
        }

        log_full(level, "%s", msg);
}

void cryptsetup_enable_logging(struct crypt_device *cd) {
        /* It's OK to call this with a NULL parameter, in which case libcryptsetup will set the default log
         * function.
         *
         * Note that this is also called from dlopen_cryptsetup(), which we call here too. Sounds like an
         * endless loop, but isn't because we break it via the check for 'cryptsetup_dl' early in
         * dlopen_cryptsetup(). */

        if (dlopen_cryptsetup() < 0)
                return; /* If this fails, let's gracefully ignore the issue, this is just debug logging after
                         * all, and if this failed we already generated a debug log message that should help
                         * to track things down. */

        sym_crypt_set_log_callback(cd, cryptsetup_log_glue, NULL);
        sym_crypt_set_debug_level(DEBUG_LOGGING ? CRYPT_DEBUG_ALL : CRYPT_DEBUG_NONE);
}

int cryptsetup_set_minimal_pbkdf(struct crypt_device *cd) {

        /* With CRYPT_PBKDF_NO_BENCHMARK flag set .time_ms member is ignored
         * while .iterations must be set at least to recommended minimum value. */

        static const struct crypt_pbkdf_type minimal_pbkdf = {
                .hash = "sha512",
                .type = CRYPT_KDF_PBKDF2,
                .iterations = 1000, /* recommended minimum count for pbkdf2
                                     * according to NIST SP 800-132, ch. 5.2 */
                .flags = CRYPT_PBKDF_NO_BENCHMARK
        };

        int r;

        /* Sets a minimal PKBDF in case we already have a high entropy key. */

        r = dlopen_cryptsetup();
        if (r < 0)
                return r;

        r = sym_crypt_set_pbkdf_type(cd, &minimal_pbkdf);
        if (r < 0)
                return r;

        return 0;
}

int cryptsetup_get_token_as_json(
                struct crypt_device *cd,
                int idx,
                const char *verify_type,
                sd_json_variant **ret) {

        _cleanup_(sd_json_variant_unrefp) sd_json_variant *v = NULL;
        const char *text;
        int r;

        assert(cd);

        /* Extracts and parses the LUKS2 JSON token data from a LUKS2 device. Optionally verifies the type of
         * the token. Returns:
         *
         *      -EINVAL → token index out of range or "type" field missing
         *      -ENOENT → token doesn't exist
         * -EMEDIUMTYPE → "verify_type" specified and doesn't match token's type
         */

        r = dlopen_cryptsetup();
        if (r < 0)
                return r;

        r = sym_crypt_token_json_get(cd, idx, &text);
        if (r < 0)
                return r;

        r = sd_json_parse(text, 0, &v, NULL, NULL);
        if (r < 0)
                return r;

        if (verify_type) {
                sd_json_variant *w;

                w = sd_json_variant_by_key(v, "type");
                if (!w)
                        return -EINVAL;

                if (!streq_ptr(sd_json_variant_string(w), verify_type))
                        return -EMEDIUMTYPE;
        }

        if (ret)
                *ret = TAKE_PTR(v);

        return 0;
}

int cryptsetup_add_token_json(struct crypt_device *cd, sd_json_variant *v) {
        _cleanup_free_ char *text = NULL;
        int r;

        r = dlopen_cryptsetup();
        if (r < 0)
                return r;

        r = sd_json_variant_format(v, 0, &text);
        if (r < 0)
                return log_debug_errno(r, "Failed to format token data for LUKS: %m");

        log_debug("Adding token text <%s>", text);

        r = sym_crypt_token_json_set(cd, CRYPT_ANY_TOKEN, text);
        if (r < 0)
                return log_debug_errno(r, "Failed to write token data to LUKS: %m");

        return 0;
}
#endif

int dlopen_cryptsetup(void) {
#if HAVE_LIBCRYPTSETUP
        int r;

        /* libcryptsetup added crypt_reencrypt() in 2.2.0, and marked it obsolete in 2.4.0, replacing it with
         * crypt_reencrypt_run(), which takes one extra argument but is otherwise identical. The old call is
         * still available though, and given we want to support 2.2.0 for a while longer, we'll use the old
         * symbol if the new one is not available. */

        ELF_NOTE_DLOPEN("cryptsetup",
                        "Support for disk encryption, integrity, and authentication",
                        ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED,
                        "libcryptsetup.so.12");

        r = dlopen_many_sym_or_warn(
                        &cryptsetup_dl, "libcryptsetup.so.12", LOG_DEBUG,
                        DLSYM_ARG(crypt_activate_by_passphrase),
                        DLSYM_ARG(crypt_activate_by_signed_key),
                        DLSYM_ARG(crypt_activate_by_volume_key),
                        DLSYM_ARG(crypt_deactivate_by_name),
                        DLSYM_ARG(crypt_format),
                        DLSYM_ARG(crypt_free),
                        DLSYM_ARG(crypt_get_cipher),
                        DLSYM_ARG(crypt_get_cipher_mode),
                        DLSYM_ARG(crypt_get_data_offset),
                        DLSYM_ARG(crypt_get_device_name),
                        DLSYM_ARG(crypt_get_dir),
                        DLSYM_ARG(crypt_get_type),
                        DLSYM_ARG(crypt_get_uuid),
                        DLSYM_ARG(crypt_get_verity_info),
                        DLSYM_ARG(crypt_get_volume_key_size),
                        DLSYM_ARG(crypt_header_restore),
                        DLSYM_ARG(crypt_init),
                        DLSYM_ARG(crypt_init_by_name),
                        DLSYM_ARG(crypt_keyslot_add_by_volume_key),
                        DLSYM_ARG(crypt_keyslot_destroy),
                        DLSYM_ARG(crypt_keyslot_max),
                        DLSYM_ARG(crypt_load),
                        DLSYM_ARG(crypt_metadata_locking),
                        DLSYM_ARG(crypt_reencrypt_init_by_passphrase),
#if HAVE_CRYPT_REENCRYPT_RUN
                        DLSYM_ARG(crypt_reencrypt_run),
#else
                        DLSYM_ARG(crypt_reencrypt),
#endif
                        DLSYM_ARG(crypt_resize),
                        DLSYM_ARG(crypt_resume_by_volume_key),
                        DLSYM_ARG(crypt_set_data_device),
                        DLSYM_ARG(crypt_set_data_offset),
                        DLSYM_ARG(crypt_set_debug_level),
                        DLSYM_ARG(crypt_set_log_callback),
                        DLSYM_ARG(crypt_set_metadata_size),
                        DLSYM_ARG(crypt_set_pbkdf_type),
                        DLSYM_ARG(crypt_suspend),
                        DLSYM_ARG(crypt_token_json_get),
                        DLSYM_ARG(crypt_token_json_set),
#if HAVE_CRYPT_TOKEN_MAX
                        DLSYM_ARG(crypt_token_max),
#endif
#if HAVE_CRYPT_TOKEN_SET_EXTERNAL_PATH
                        DLSYM_ARG(crypt_token_set_external_path),
#endif
                        DLSYM_ARG(crypt_token_status),
                        DLSYM_ARG(crypt_volume_key_get),
                        DLSYM_ARG(crypt_volume_key_keyring));
        if (r <= 0)
                return r;

        /* Redirect the default logging calls of libcryptsetup to our own logging infra. (Note that
         * libcryptsetup also maintains per-"struct crypt_device" log functions, which we'll also set
         * whenever allocating a "struct crypt_device" context. Why set both? To be defensive: maybe some
         * other code loaded into this process also changes the global log functions of libcryptsetup, who
         * knows? And if so, we still want our own objects to log via our own infra, at the very least.) */
        cryptsetup_enable_logging(NULL);

        const char *e = secure_getenv("SYSTEMD_CRYPTSETUP_TOKEN_PATH");
        if (e) {
#if HAVE_CRYPT_TOKEN_SET_EXTERNAL_PATH
                r = sym_crypt_token_set_external_path(e);
                if (r < 0)
                        log_debug_errno(r, "Failed to set the libcryptsetup external token path to '%s', ignoring: %m", e);
#else
                log_debug("libcryptsetup version does not support setting the external token path, not setting it to '%s'.", e);
#endif
        }

        return 1;
#else
        return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "cryptsetup support is not compiled in.");
#endif
}

int cryptsetup_get_keyslot_from_token(sd_json_variant *v) {
        int keyslot, r;
        sd_json_variant *w;

        /* Parses the "keyslots" field of a LUKS2 token object. The field can be an array, but here we assume
         * that it contains a single element only, since that's the only way we ever generate it
         * ourselves. */

        w = sd_json_variant_by_key(v, "keyslots");
        if (!w)
                return -ENOENT;
        if (!sd_json_variant_is_array(w) || sd_json_variant_elements(w) != 1)
                return -EMEDIUMTYPE;

        w = sd_json_variant_by_index(w, 0);
        if (!w)
                return -ENOENT;
        if (!sd_json_variant_is_string(w))
                return -EMEDIUMTYPE;

        r = safe_atoi(sd_json_variant_string(w), &keyslot);
        if (r < 0)
                return r;
        if (keyslot < 0)
                return -EINVAL;

        return keyslot;
}

const char* mangle_none(const char *s) {
        /* A helper that turns cryptsetup/integritysetup/veritysetup "options" strings into NULL if they are effectively empty */
        return isempty(s) || STR_IN_SET(s, "-", "none") ? NULL : s;
}

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include <stdlib.h>
4
5	#include "sd-json.h"
6
7	#include "alloc-util.h"
8	#include "cryptsetup-util.h"
9	#include "dlfcn-util.h"
10	#include "log.h"
11	#include "parse-util.h"
12	#include "string-util.h"
13	#include "strv.h"
14
15	#if HAVE_LIBCRYPTSETUP
16	static void *cryptsetup_dl = NULL;
17
18	DLSYM_PROTOTYPE(crypt_activate_by_passphrase) = NULL;
19	DLSYM_PROTOTYPE(crypt_activate_by_signed_key) = NULL;
20	DLSYM_PROTOTYPE(crypt_activate_by_volume_key) = NULL;
21	DLSYM_PROTOTYPE(crypt_deactivate_by_name) = NULL;
22	DLSYM_PROTOTYPE(crypt_format) = NULL;
23	DLSYM_PROTOTYPE(crypt_free) = NULL;
24	DLSYM_PROTOTYPE(crypt_get_cipher) = NULL;
25	DLSYM_PROTOTYPE(crypt_get_cipher_mode) = NULL;
26	DLSYM_PROTOTYPE(crypt_get_data_offset) = NULL;
27	DLSYM_PROTOTYPE(crypt_get_device_name) = NULL;
28	DLSYM_PROTOTYPE(crypt_get_dir) = NULL;
29	DLSYM_PROTOTYPE(crypt_get_type) = NULL;
30	DLSYM_PROTOTYPE(crypt_get_uuid) = NULL;
31	DLSYM_PROTOTYPE(crypt_get_verity_info) = NULL;
32	DLSYM_PROTOTYPE(crypt_get_volume_key_size) = NULL;
33	DLSYM_PROTOTYPE(crypt_header_restore) = NULL;
34	DLSYM_PROTOTYPE(crypt_init) = NULL;
35	DLSYM_PROTOTYPE(crypt_init_by_name) = NULL;
36	DLSYM_PROTOTYPE(crypt_keyslot_add_by_volume_key) = NULL;
37	DLSYM_PROTOTYPE(crypt_keyslot_destroy) = NULL;
38	DLSYM_PROTOTYPE(crypt_keyslot_max) = NULL;
39	DLSYM_PROTOTYPE(crypt_load) = NULL;
40	DLSYM_PROTOTYPE(crypt_metadata_locking) = NULL;
41	DLSYM_PROTOTYPE(crypt_reencrypt_init_by_passphrase) = NULL;
42	#if HAVE_CRYPT_REENCRYPT_RUN
43	DLSYM_PROTOTYPE(crypt_reencrypt_run);
44	#else
45	DLSYM_PROTOTYPE(crypt_reencrypt);
46	#endif
47	DLSYM_PROTOTYPE(crypt_resize) = NULL;
48	DLSYM_PROTOTYPE(crypt_resume_by_volume_key) = NULL;
49	DLSYM_PROTOTYPE(crypt_set_data_device) = NULL;
50	DLSYM_PROTOTYPE(crypt_set_data_offset) = NULL;
51	DLSYM_PROTOTYPE(crypt_set_debug_level) = NULL;
52	DLSYM_PROTOTYPE(crypt_set_log_callback) = NULL;
53	DLSYM_PROTOTYPE(crypt_set_metadata_size) = NULL;
54	DLSYM_PROTOTYPE(crypt_set_pbkdf_type) = NULL;
55	DLSYM_PROTOTYPE(crypt_suspend) = NULL;
56	DLSYM_PROTOTYPE(crypt_token_json_get) = NULL;
57	DLSYM_PROTOTYPE(crypt_token_json_set) = NULL;
58	#if HAVE_CRYPT_TOKEN_MAX
59	DLSYM_PROTOTYPE(crypt_token_max) = NULL;
60	#else
61	int crypt_token_max(_unused_ const char *type) {
62	assert(streq(type, CRYPT_LUKS2));
63
64	return 32;
65	}
66	#endif
67	#if HAVE_CRYPT_TOKEN_SET_EXTERNAL_PATH
68	DLSYM_PROTOTYPE(crypt_token_set_external_path) = NULL;
69	#endif
70	DLSYM_PROTOTYPE(crypt_token_status) = NULL;
71	DLSYM_PROTOTYPE(crypt_volume_key_get) = NULL;
72	DLSYM_PROTOTYPE(crypt_volume_key_keyring) = NULL;
73
74	static void cryptsetup_log_glue(int level, const char msg, void usrptr) {	27,454✔
75
76	switch (level) {	27,454✔
77	case CRYPT_LOG_NORMAL:
78	level = LOG_NOTICE;
79	break;
80	case CRYPT_LOG_ERROR:	13✔
81	level = LOG_ERR;	13✔
82	break;	13✔
83	case CRYPT_LOG_VERBOSE:	×
84	level = LOG_INFO;	×
85	break;	×
86	case CRYPT_LOG_DEBUG:	27,441✔
87	level = LOG_DEBUG;	27,441✔
88	break;	27,441✔
89	default:
90	log_error("Unknown libcryptsetup log level: %d", level);	×
91	level = LOG_ERR;
92	}
93
94	log_full(level, "%s", msg);	27,454✔
95	}	27,454✔
96
97	void cryptsetup_enable_logging(struct crypt_device *cd) {	1,383✔
98	/* It's OK to call this with a NULL parameter, in which case libcryptsetup will set the default log
99	* function.
100	*
101	* Note that this is also called from dlopen_cryptsetup(), which we call here too. Sounds like an
102	* endless loop, but isn't because we break it via the check for 'cryptsetup_dl' early in
103	* dlopen_cryptsetup(). */
104
105	if (dlopen_cryptsetup() < 0)	1,383✔
106	return; /* If this fails, let's gracefully ignore the issue, this is just debug logging after
107	* all, and if this failed we already generated a debug log message that should help
108	* to track things down. */
109
110	sym_crypt_set_log_callback(cd, cryptsetup_log_glue, NULL);	1,383✔
111	sym_crypt_set_debug_level(DEBUG_LOGGING ? CRYPT_DEBUG_ALL : CRYPT_DEBUG_NONE);	1,404✔
112	}
113
114	int cryptsetup_set_minimal_pbkdf(struct crypt_device *cd) {	45✔
115
116	/* With CRYPT_PBKDF_NO_BENCHMARK flag set .time_ms member is ignored
117	* while .iterations must be set at least to recommended minimum value. */
118
119	static const struct crypt_pbkdf_type minimal_pbkdf = {	45✔
120	.hash = "sha512",
121	.type = CRYPT_KDF_PBKDF2,
122	.iterations = 1000, /* recommended minimum count for pbkdf2
123	* according to NIST SP 800-132, ch. 5.2 */
124	.flags = CRYPT_PBKDF_NO_BENCHMARK
125	};
126
127	int r;	45✔
128
129	/* Sets a minimal PKBDF in case we already have a high entropy key. */
130
131	r = dlopen_cryptsetup();	45✔
132	if (r < 0)	45✔
133	return r;
134
135	r = sym_crypt_set_pbkdf_type(cd, &minimal_pbkdf);	45✔
136	if (r < 0)	45✔
137	return r;	×
138
139	return 0;
140	}
141
142	int cryptsetup_get_token_as_json(	5,621✔
143	struct crypt_device *cd,
144	int idx,
145	const char *verify_type,
146	sd_json_variant **ret) {
147
148	_cleanup_(sd_json_variant_unrefp) sd_json_variant *v = NULL;	5,621✔
149	const char *text;	5,621✔
150	int r;	5,621✔
151
152	assert(cd);	5,621✔
153
154	/* Extracts and parses the LUKS2 JSON token data from a LUKS2 device. Optionally verifies the type of
155	* the token. Returns:
156	*
157	* -EINVAL → token index out of range or "type" field missing
158	* -ENOENT → token doesn't exist
159	* -EMEDIUMTYPE → "verify_type" specified and doesn't match token's type
160	*/
161
162	r = dlopen_cryptsetup();	5,621✔
163	if (r < 0)	5,621✔
164	return r;
165
166	r = sym_crypt_token_json_get(cd, idx, &text);	5,621✔
167	if (r < 0)	5,621✔
168	return r;
169
170	r = sd_json_parse(text, 0, &v, NULL, NULL);	403✔
171	if (r < 0)	403✔
172	return r;
173
174	if (verify_type) {	403✔
175	sd_json_variant *w;	240✔
176
177	w = sd_json_variant_by_key(v, "type");	240✔
178	if (!w)	240✔
179	return -EINVAL;
180
181	if (!streq_ptr(sd_json_variant_string(w), verify_type))	240✔
182	return -EMEDIUMTYPE;
183	}
184
185	if (ret)	179✔
186	*ret = TAKE_PTR(v);	179✔
187
188	return 0;
189	}
190
191	int cryptsetup_add_token_json(struct crypt_device cd, sd_json_variant v) {	45✔
192	_cleanup_free_ char *text = NULL;	45✔
193	int r;	45✔
194
195	r = dlopen_cryptsetup();	45✔
196	if (r < 0)	45✔
197	return r;
198
199	r = sd_json_variant_format(v, 0, &text);	45✔
200	if (r < 0)	45✔
201	return log_debug_errno(r, "Failed to format token data for LUKS: %m");	×
202
203	log_debug("Adding token text <%s>", text);	45✔
204
205	r = sym_crypt_token_json_set(cd, CRYPT_ANY_TOKEN, text);	45✔
206	if (r < 0)	45✔
207	return log_debug_errno(r, "Failed to write token data to LUKS: %m");	×
208
209	return 0;
210	}
211	#endif
212
213	int dlopen_cryptsetup(void) {	7,253✔
214	#if HAVE_LIBCRYPTSETUP
215	int r;	7,253✔
216
217	/* libcryptsetup added crypt_reencrypt() in 2.2.0, and marked it obsolete in 2.4.0, replacing it with
218	* crypt_reencrypt_run(), which takes one extra argument but is otherwise identical. The old call is
219	* still available though, and given we want to support 2.2.0 for a while longer, we'll use the old
220	* symbol if the new one is not available. */
221
222	ELF_NOTE_DLOPEN("cryptsetup",	7,253✔
223	"Support for disk encryption, integrity, and authentication",
224	ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED,
225	"libcryptsetup.so.12");
226
227	r = dlopen_many_sym_or_warn(	7,253✔
228	&cryptsetup_dl, "libcryptsetup.so.12", LOG_DEBUG,
229	DLSYM_ARG(crypt_activate_by_passphrase),
230	DLSYM_ARG(crypt_activate_by_signed_key),
231	DLSYM_ARG(crypt_activate_by_volume_key),
232	DLSYM_ARG(crypt_deactivate_by_name),
233	DLSYM_ARG(crypt_format),
234	DLSYM_ARG(crypt_free),
235	DLSYM_ARG(crypt_get_cipher),
236	DLSYM_ARG(crypt_get_cipher_mode),
237	DLSYM_ARG(crypt_get_data_offset),
238	DLSYM_ARG(crypt_get_device_name),
239	DLSYM_ARG(crypt_get_dir),
240	DLSYM_ARG(crypt_get_type),
241	DLSYM_ARG(crypt_get_uuid),
242	DLSYM_ARG(crypt_get_verity_info),
243	DLSYM_ARG(crypt_get_volume_key_size),
244	DLSYM_ARG(crypt_header_restore),
245	DLSYM_ARG(crypt_init),
246	DLSYM_ARG(crypt_init_by_name),
247	DLSYM_ARG(crypt_keyslot_add_by_volume_key),
248	DLSYM_ARG(crypt_keyslot_destroy),
249	DLSYM_ARG(crypt_keyslot_max),
250	DLSYM_ARG(crypt_load),
251	DLSYM_ARG(crypt_metadata_locking),
252	DLSYM_ARG(crypt_reencrypt_init_by_passphrase),
253	#if HAVE_CRYPT_REENCRYPT_RUN
254	DLSYM_ARG(crypt_reencrypt_run),
255	#else
256	DLSYM_ARG(crypt_reencrypt),
257	#endif
258	DLSYM_ARG(crypt_resize),
259	DLSYM_ARG(crypt_resume_by_volume_key),
260	DLSYM_ARG(crypt_set_data_device),
261	DLSYM_ARG(crypt_set_data_offset),
262	DLSYM_ARG(crypt_set_debug_level),
263	DLSYM_ARG(crypt_set_log_callback),
264	DLSYM_ARG(crypt_set_metadata_size),
265	DLSYM_ARG(crypt_set_pbkdf_type),
266	DLSYM_ARG(crypt_suspend),
267	DLSYM_ARG(crypt_token_json_get),
268	DLSYM_ARG(crypt_token_json_set),
269	#if HAVE_CRYPT_TOKEN_MAX
270	DLSYM_ARG(crypt_token_max),
271	#endif
272	#if HAVE_CRYPT_TOKEN_SET_EXTERNAL_PATH
273	DLSYM_ARG(crypt_token_set_external_path),
274	#endif
275	DLSYM_ARG(crypt_token_status),
276	DLSYM_ARG(crypt_volume_key_get),
277	DLSYM_ARG(crypt_volume_key_keyring));
278	if (r <= 0)	7,253✔
279	return r;
280
281	/* Redirect the default logging calls of libcryptsetup to our own logging infra. (Note that
282	* libcryptsetup also maintains per-"struct crypt_device" log functions, which we'll also set
283	* whenever allocating a "struct crypt_device" context. Why set both? To be defensive: maybe some
284	* other code loaded into this process also changes the global log functions of libcryptsetup, who
285	* knows? And if so, we still want our own objects to log via our own infra, at the very least.) */
286	cryptsetup_enable_logging(NULL);	559✔
287
288	const char *e = secure_getenv("SYSTEMD_CRYPTSETUP_TOKEN_PATH");	559✔
289	if (e) {	559✔
290	#if HAVE_CRYPT_TOKEN_SET_EXTERNAL_PATH
291	r = sym_crypt_token_set_external_path(e);	×
292	if (r < 0)	×
293	log_debug_errno(r, "Failed to set the libcryptsetup external token path to '%s', ignoring: %m", e);	×
294	#else
295	log_debug("libcryptsetup version does not support setting the external token path, not setting it to '%s'.", e);
296	#endif
297	}
298
299	return 1;
300	#else
301	return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "cryptsetup support is not compiled in.");
302	#endif
303	}
304
305	int cryptsetup_get_keyslot_from_token(sd_json_variant *v) {	16✔
306	int keyslot, r;	16✔
307	sd_json_variant *w;	16✔
308
309	/* Parses the "keyslots" field of a LUKS2 token object. The field can be an array, but here we assume
310	* that it contains a single element only, since that's the only way we ever generate it
311	* ourselves. */
312
313	w = sd_json_variant_by_key(v, "keyslots");	16✔
314	if (!w)	16✔
315	return -ENOENT;	16✔
316	if (!sd_json_variant_is_array(w) \|\| sd_json_variant_elements(w) != 1)	16✔
317	return -EMEDIUMTYPE;	×
318
319	w = sd_json_variant_by_index(w, 0);	16✔
320	if (!w)	16✔
321	return -ENOENT;
322	if (!sd_json_variant_is_string(w))	16✔
323	return -EMEDIUMTYPE;
324
325	r = safe_atoi(sd_json_variant_string(w), &keyslot);	16✔
326	if (r < 0)	16✔
327	return r;
328	if (keyslot < 0)	16✔
329	return -EINVAL;	×
330
331	return keyslot;
332	}
333
334	const char* mangle_none(const char *s) {	190✔
335	/* A helper that turns cryptsetup/integritysetup/veritysetup "options" strings into NULL if they are effectively empty */
336	return isempty(s) \|\| STR_IN_SET(s, "-", "none") ? NULL : s;	380✔
337	}

systemd / systemd / 19020191358

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