[thirdparty/systemd.git] / src / dissect / dissect.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <fcntl.h>
#include <getopt.h>
#include <linux/loop.h>
#include <stdio.h>

#include "architecture.h"
#include "dissect-image.h"
#include "hexdecoct.h"
#include "log.h"
#include "loop-util.h"
#include "main-func.h"
#include "parse-util.h"
#include "path-util.h"
#include "string-util.h"
#include "strv.h"
#include "user-util.h"
#include "util.h"

static enum {
        ACTION_DISSECT,
        ACTION_MOUNT,
} arg_action = ACTION_DISSECT;
static const char *arg_image = NULL;
static const char *arg_path = NULL;
static DissectImageFlags arg_flags = DISSECT_IMAGE_REQUIRE_ROOT|DISSECT_IMAGE_DISCARD_ON_LOOP|DISSECT_IMAGE_RELAX_VAR_CHECK|DISSECT_IMAGE_FSCK;
static void *arg_root_hash = NULL;
static char *arg_verity_data = NULL;
static size_t arg_root_hash_size = 0;
static char *arg_root_hash_sig_path = NULL;
static void *arg_root_hash_sig = NULL;
static size_t arg_root_hash_sig_size = 0;

STATIC_DESTRUCTOR_REGISTER(arg_root_hash, freep);
STATIC_DESTRUCTOR_REGISTER(arg_verity_data, freep);
STATIC_DESTRUCTOR_REGISTER(arg_root_hash_sig_path, freep);
STATIC_DESTRUCTOR_REGISTER(arg_root_hash_sig, freep);

static void help(void) {
        printf("%s [OPTIONS...] IMAGE\n"
               "%s [OPTIONS...] --mount IMAGE PATH\n"
               "Dissect a file system OS image.\n\n"
               "  -h --help               Show this help\n"
               "     --version            Show package version\n"
               "  -m --mount              Mount the image to the specified directory\n"
               "  -r --read-only          Mount read-only\n"
               "     --fsck=BOOL          Run fsck before mounting\n"
               "     --discard=MODE       Choose 'discard' mode (disabled, loop, all, crypto)\n"
               "     --root-hash=HASH     Specify root hash for verity\n"
               "     --root-hash-sig=SIG  Specify pkcs7 signature of root hash for verity\n"
               "                          as a DER encoded PKCS7, either as a path to a file\n"
               "                          or as an ASCII base64 encoded string prefixed by\n"
               "                          'base64:'\n"
               "     --verity-data=PATH   Specify data file with hash tree for verity if it is\n"
               "                          not embedded in IMAGE\n",
               program_invocation_short_name,
               program_invocation_short_name);
}

static int parse_argv(int argc, char *argv[]) {

        enum {
                ARG_VERSION = 0x100,
                ARG_DISCARD,
                ARG_ROOT_HASH,
                ARG_FSCK,
                ARG_VERITY_DATA,
                ARG_ROOT_HASH_SIG,
        };

        static const struct option options[] = {
                { "help",          no_argument,       NULL, 'h'               },
                { "version",       no_argument,       NULL, ARG_VERSION       },
                { "mount",         no_argument,       NULL, 'm'               },
                { "read-only",     no_argument,       NULL, 'r'               },
                { "discard",       required_argument, NULL, ARG_DISCARD       },
                { "root-hash",     required_argument, NULL, ARG_ROOT_HASH     },
                { "fsck",          required_argument, NULL, ARG_FSCK          },
                { "verity-data",   required_argument, NULL, ARG_VERITY_DATA   },
                { "root-hash-sig", required_argument, NULL, ARG_ROOT_HASH_SIG },
                {}
        };

        int c, r;

        assert(argc >= 0);
        assert(argv);

        while ((c = getopt_long(argc, argv, "hmr", options, NULL)) >= 0) {

                switch (c) {

                case 'h':
                        help();
                        return 0;

                case ARG_VERSION:
                        return version();

                case 'm':
                        arg_action = ACTION_MOUNT;
                        break;

                case 'r':
                        arg_flags |= DISSECT_IMAGE_READ_ONLY;
                        break;

                case ARG_DISCARD: {
                        DissectImageFlags flags;

                        if (streq(optarg, "disabled"))
                                flags = 0;
                        else if (streq(optarg, "loop"))
                                flags = DISSECT_IMAGE_DISCARD_ON_LOOP;
                        else if (streq(optarg, "all"))
                                flags = DISSECT_IMAGE_DISCARD_ON_LOOP | DISSECT_IMAGE_DISCARD;
                        else if (streq(optarg, "crypt"))
                                flags = DISSECT_IMAGE_DISCARD_ANY;
                        else
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                                       "Unknown --discard= parameter: %s",
                                                       optarg);
                        arg_flags = (arg_flags & ~DISSECT_IMAGE_DISCARD_ANY) | flags;

                        break;
                }

                case ARG_ROOT_HASH: {
                        void *p;
                        size_t l;

                        r = unhexmem(optarg, strlen(optarg), &p, &l);
                        if (r < 0)
                                return log_error_errno(r, "Failed to parse root hash '%s': %m", optarg);
                        if (l < sizeof(sd_id128_t)) {
                                log_error("Root hash must be at least 128bit long: %s", optarg);
                                free(p);
                                return -EINVAL;
                        }

                        free(arg_root_hash);
                        arg_root_hash = p;
                        arg_root_hash_size = l;
                        break;
                }

                case ARG_VERITY_DATA:
                        r = parse_path_argument_and_warn(optarg, false, &arg_verity_data);
                        if (r < 0)
                                return r;
                        break;

                case ARG_ROOT_HASH_SIG: {
                        char *value;

                        if ((value = startswith(optarg, "base64:"))) {
                                void *p;
                                size_t l;

                                r = unbase64mem(value, strlen(value), &p, &l);
                                if (r < 0)
                                        return log_error_errno(r, "Failed to parse root hash signature '%s': %m", optarg);

                                free_and_replace(arg_root_hash_sig, p);
                                arg_root_hash_sig_size = l;
                                arg_root_hash_sig_path = mfree(arg_root_hash_sig_path);
                        } else {
                                r = parse_path_argument_and_warn(optarg, false, &arg_root_hash_sig_path);
                                if (r < 0)
                                        return r;
                                arg_root_hash_sig = mfree(arg_root_hash_sig);
                                arg_root_hash_sig_size = 0;
                        }

                        break;
                }

                case ARG_FSCK:
                        r = parse_boolean(optarg);
                        if (r < 0)
                                return log_error_errno(r, "Failed to parse --fsck= parameter: %s", optarg);

                        SET_FLAG(arg_flags, DISSECT_IMAGE_FSCK, r);
                        break;

                case '?':
                        return -EINVAL;

                default:
                        assert_not_reached("Unhandled option");
                }

        }

        switch (arg_action) {

        case ACTION_DISSECT:
                if (optind + 1 != argc)
                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                               "Expected a file path as only argument.");

                arg_image = argv[optind];
                arg_flags |= DISSECT_IMAGE_READ_ONLY;
                break;

        case ACTION_MOUNT:
                if (optind + 2 != argc)
                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                               "Expected a file path and mount point path as only arguments.");

                arg_image = argv[optind];
                arg_path = argv[optind + 1];
                break;

        default:
                assert_not_reached("Unknown action.");
        }

        return 1;
}

static int run(int argc, char *argv[]) {
        _cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
        _cleanup_(decrypted_image_unrefp) DecryptedImage *di = NULL;
        _cleanup_(dissected_image_unrefp) DissectedImage *m = NULL;
        int r;

        log_parse_environment();
        log_open();

        r = parse_argv(argc, argv);
        if (r <= 0)
                return r;

        r = loop_device_make_by_path(arg_image, (arg_flags & DISSECT_IMAGE_READ_ONLY) ? O_RDONLY : O_RDWR, LO_FLAGS_PARTSCAN, &d);
        if (r < 0)
                return log_error_errno(r, "Failed to set up loopback device: %m");

        r = verity_metadata_load(arg_image, NULL, arg_root_hash ? NULL : &arg_root_hash, &arg_root_hash_size,
                           arg_verity_data ? NULL : &arg_verity_data,
                           arg_root_hash_sig_path || arg_root_hash_sig ? NULL : &arg_root_hash_sig_path);
        if (r < 0)
                return log_error_errno(r, "Failed to read verity artefacts for %s: %m", arg_image);
        arg_flags |= arg_verity_data ? DISSECT_IMAGE_NO_PARTITION_TABLE : 0;

        r = dissect_image_and_warn(d->fd, arg_image, arg_root_hash, arg_root_hash_size, arg_verity_data, NULL, arg_flags, &m);
        if (r < 0)
                return r;

        switch (arg_action) {

        case ACTION_DISSECT: {
                unsigned i;

                for (i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) {
                        DissectedPartition *p = m->partitions + i;

                        if (!p->found)
                                continue;

                        printf("Found %s '%s' partition",
                               p->rw ? "writable" : "read-only",
                               partition_designator_to_string(i));

                        if (!sd_id128_is_null(p->uuid))
                                printf(" (UUID " SD_ID128_FORMAT_STR ")", SD_ID128_FORMAT_VAL(p->uuid));

                        if (p->fstype)
                                printf(" of type %s", p->fstype);

                        if (p->architecture != _ARCHITECTURE_INVALID)
                                printf(" for %s", architecture_to_string(p->architecture));

                        if (dissected_image_can_do_verity(m, i))
                                printf(" %s verity", dissected_image_has_verity(m, i) ? "with" : "without");

                        if (p->partno >= 0)
                                printf(" on partition #%i", p->partno);

                        if (p->node)
                                printf(" (%s)", p->node);

                        putchar('\n');
                }

                r = dissected_image_acquire_metadata(m);
                if (r < 0)
                        return log_error_errno(r, "Failed to acquire image metadata: %m");

                if (m->hostname)
                        printf("  Hostname: %s\n", m->hostname);

                if (!sd_id128_is_null(m->machine_id))
                        printf("Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(m->machine_id));

                if (!strv_isempty(m->machine_info)) {
                        char **p, **q;

                        STRV_FOREACH_PAIR(p, q, m->machine_info)
                                printf("%s %s=%s\n",
                                       p == m->machine_info ? "Mach. Info:" : "           ",
                                       *p, *q);
                }

                if (!strv_isempty(m->os_release)) {
                        char **p, **q;

                        STRV_FOREACH_PAIR(p, q, m->os_release)
                                printf("%s %s=%s\n",
                                       p == m->os_release ? "OS Release:" : "           ",
                                       *p, *q);
                }

                break;
        }

        case ACTION_MOUNT:
                r = dissected_image_decrypt_interactively(m, NULL, arg_root_hash, arg_root_hash_size, arg_verity_data, arg_root_hash_sig_path, arg_root_hash_sig, arg_root_hash_sig_size, arg_flags, &di);
                if (r < 0)
                        return r;

                r = dissected_image_mount(m, arg_path, UID_INVALID, arg_flags);
                if (r == -EUCLEAN)
                        return log_error_errno(r, "File system check on image failed: %m");
                if (r < 0)
                        return log_error_errno(r, "Failed to mount image: %m");

                if (di) {
                        r = decrypted_image_relinquish(di);
                        if (r < 0)
                                return log_error_errno(r, "Failed to relinquish DM devices: %m");
                }

                loop_device_relinquish(d);
                break;

        default:
                assert_not_reached("Unknown action.");
        }

        return 0;
}

DEFINE_MAIN_FUNCTION(run);
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
a2ea3b2f LP	2
a2ea3b2f LP	3	#include <fcntl.h>
a2ea3b2f	4	#include <getopt.h>
e08f94ac LP	5	#include <linux/loop.h>
e08f94ac LP	6	#include <stdio.h>
a2ea3b2f LP	7
	8	#include "architecture.h"
	9	#include "dissect-image.h"
4623e8e6	10	#include "hexdecoct.h"
a2ea3b2f LP	11	#include "log.h"
a2ea3b2f LP	12	#include "loop-util.h"
149afb45	13	#include "main-func.h"
e475f729	14	#include "parse-util.h"
e7cbe5cb	15	#include "path-util.h"
a2ea3b2f	16	#include "string-util.h"
a1edd22e	17	#include "strv.h"
2d3a5a73	18	#include "user-util.h"
a2ea3b2f LP	19	#include "util.h"
	20
	21	static enum {
	22	ACTION_DISSECT,
	23	ACTION_MOUNT,
	24	} arg_action = ACTION_DISSECT;
	25	static const char *arg_image = NULL;
	26	static const char *arg_path = NULL;
e475f729	27	static DissectImageFlags arg_flags = DISSECT_IMAGE_REQUIRE_ROOT\|DISSECT_IMAGE_DISCARD_ON_LOOP\|DISSECT_IMAGE_RELAX_VAR_CHECK\|DISSECT_IMAGE_FSCK;
4623e8e6	28	static void *arg_root_hash = NULL;
e7cbe5cb	29	static char *arg_verity_data = NULL;
4623e8e6	30	static size_t arg_root_hash_size = 0;
c2923fdc LB	31	static char *arg_root_hash_sig_path = NULL;
	32	static void *arg_root_hash_sig = NULL;
	33	static size_t arg_root_hash_sig_size = 0;
a2ea3b2f	34
149afb45	35	STATIC_DESTRUCTOR_REGISTER(arg_root_hash, freep);
e7cbe5cb	36	STATIC_DESTRUCTOR_REGISTER(arg_verity_data, freep);
c2923fdc LB	37	STATIC_DESTRUCTOR_REGISTER(arg_root_hash_sig_path, freep);
c2923fdc LB	38	STATIC_DESTRUCTOR_REGISTER(arg_root_hash_sig, freep);
149afb45	39
a2ea3b2f LP	40	static void help(void) {
	41	printf("%s [OPTIONS...] IMAGE\n"
	42	"%s [OPTIONS...] --mount IMAGE PATH\n"
	43	"Dissect a file system OS image.\n\n"
e7cbe5cb LB	44	" -h --help Show this help\n"
	45	" --version Show package version\n"
	46	" -m --mount Mount the image to the specified directory\n"
	47	" -r --read-only Mount read-only\n"
	48	" --fsck=BOOL Run fsck before mounting\n"
	49	" --discard=MODE Choose 'discard' mode (disabled, loop, all, crypto)\n"
	50	" --root-hash=HASH Specify root hash for verity\n"
c2923fdc LB	51	" --root-hash-sig=SIG Specify pkcs7 signature of root hash for verity\n"
	52	" as a DER encoded PKCS7, either as a path to a file\n"
	53	" or as an ASCII base64 encoded string prefixed by\n"
	54	" 'base64:'\n"
e7cbe5cb LB	55	" --verity-data=PATH Specify data file with hash tree for verity if it is\n"
e7cbe5cb LB	56	" not embedded in IMAGE\n",
a2ea3b2f LP	57	program_invocation_short_name,
	58	program_invocation_short_name);
	59	}
	60
	61	static int parse_argv(int argc, char *argv[]) {
	62
	63	enum {
	64	ARG_VERSION = 0x100,
18b5886e	65	ARG_DISCARD,
4623e8e6	66	ARG_ROOT_HASH,
e475f729	67	ARG_FSCK,
e7cbe5cb	68	ARG_VERITY_DATA,
c2923fdc	69	ARG_ROOT_HASH_SIG,
a2ea3b2f LP	70	};
	71
	72	static const struct option options[] = {
c2923fdc LB	73	{ "help", no_argument, NULL, 'h' },
	74	{ "version", no_argument, NULL, ARG_VERSION },
	75	{ "mount", no_argument, NULL, 'm' },
	76	{ "read-only", no_argument, NULL, 'r' },
	77	{ "discard", required_argument, NULL, ARG_DISCARD },
	78	{ "root-hash", required_argument, NULL, ARG_ROOT_HASH },
	79	{ "fsck", required_argument, NULL, ARG_FSCK },
	80	{ "verity-data", required_argument, NULL, ARG_VERITY_DATA },
	81	{ "root-hash-sig", required_argument, NULL, ARG_ROOT_HASH_SIG },
a2ea3b2f LP	82	{}
	83	};
	84
4623e8e6	85	int c, r;
a2ea3b2f LP	86
	87	assert(argc >= 0);
	88	assert(argv);
	89
	90	while ((c = getopt_long(argc, argv, "hmr", options, NULL)) >= 0) {
	91
	92	switch (c) {
	93
	94	case 'h':
	95	help();
	96	return 0;
	97
	98	case ARG_VERSION:
	99	return version();
	100
	101	case 'm':
	102	arg_action = ACTION_MOUNT;
	103	break;
	104
	105	case 'r':
18b5886e LP	106	arg_flags \|= DISSECT_IMAGE_READ_ONLY;
	107	break;
	108
971e2ef0 ZJS	109	case ARG_DISCARD: {
	110	DissectImageFlags flags;
	111
18b5886e	112	if (streq(optarg, "disabled"))
971e2ef0	113	flags = 0;
18b5886e	114	else if (streq(optarg, "loop"))
971e2ef0	115	flags = DISSECT_IMAGE_DISCARD_ON_LOOP;
18b5886e	116	else if (streq(optarg, "all"))
971e2ef0	117	flags = DISSECT_IMAGE_DISCARD_ON_LOOP \| DISSECT_IMAGE_DISCARD;
18b5886e	118	else if (streq(optarg, "crypt"))
971e2ef0	119	flags = DISSECT_IMAGE_DISCARD_ANY;
baaa35ad ZJS	120	else
	121	return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
	122	"Unknown --discard= parameter: %s",
	123	optarg);
971e2ef0	124	arg_flags = (arg_flags & ~DISSECT_IMAGE_DISCARD_ANY) \| flags;
18b5886e	125
a2ea3b2f	126	break;
971e2ef0	127	}
a2ea3b2f	128
4623e8e6 LP	129	case ARG_ROOT_HASH: {
	130	void *p;
	131	size_t l;
	132
	133	r = unhexmem(optarg, strlen(optarg), &p, &l);
	134	if (r < 0)
63cf2d75	135	return log_error_errno(r, "Failed to parse root hash '%s': %m", optarg);
4623e8e6 LP	136	if (l < sizeof(sd_id128_t)) {
	137	log_error("Root hash must be at least 128bit long: %s", optarg);
	138	free(p);
	139	return -EINVAL;
	140	}
	141
	142	free(arg_root_hash);
	143	arg_root_hash = p;
	144	arg_root_hash_size = l;
	145	break;
	146	}
	147
e7cbe5cb LB	148	case ARG_VERITY_DATA:
	149	r = parse_path_argument_and_warn(optarg, false, &arg_verity_data);
	150	if (r < 0)
	151	return r;
	152	break;
	153
c2923fdc LB	154	case ARG_ROOT_HASH_SIG: {
	155	char *value;
	156
	157	if ((value = startswith(optarg, "base64:"))) {
	158	void *p;
	159	size_t l;
	160
	161	r = unbase64mem(value, strlen(value), &p, &l);
	162	if (r < 0)
	163	return log_error_errno(r, "Failed to parse root hash signature '%s': %m", optarg);
	164
	165	free_and_replace(arg_root_hash_sig, p);
	166	arg_root_hash_sig_size = l;
	167	arg_root_hash_sig_path = mfree(arg_root_hash_sig_path);
	168	} else {
	169	r = parse_path_argument_and_warn(optarg, false, &arg_root_hash_sig_path);
	170	if (r < 0)
	171	return r;
	172	arg_root_hash_sig = mfree(arg_root_hash_sig);
	173	arg_root_hash_sig_size = 0;
	174	}
	175
	176	break;
	177	}
	178
e475f729 LP	179	case ARG_FSCK:
	180	r = parse_boolean(optarg);
	181	if (r < 0)
	182	return log_error_errno(r, "Failed to parse --fsck= parameter: %s", optarg);
	183
	184	SET_FLAG(arg_flags, DISSECT_IMAGE_FSCK, r);
	185	break;
	186
a2ea3b2f LP	187	case '?':
	188	return -EINVAL;
	189
	190	default:
	191	assert_not_reached("Unhandled option");
	192	}
	193
	194	}
	195
	196	switch (arg_action) {
	197
	198	case ACTION_DISSECT:
baaa35ad ZJS	199	if (optind + 1 != argc)
	200	return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
	201	"Expected a file path as only argument.");
a2ea3b2f LP	202
a2ea3b2f LP	203	arg_image = argv[optind];
18b5886e	204	arg_flags \|= DISSECT_IMAGE_READ_ONLY;
a2ea3b2f LP	205	break;
	206
	207	case ACTION_MOUNT:
baaa35ad ZJS	208	if (optind + 2 != argc)
	209	return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
	210	"Expected a file path and mount point path as only arguments.");
a2ea3b2f LP	211
	212	arg_image = argv[optind];
	213	arg_path = argv[optind + 1];
	214	break;
	215
	216	default:
	217	assert_not_reached("Unknown action.");
	218	}
	219
	220	return 1;
	221	}
	222
149afb45	223	static int run(int argc, char *argv[]) {
a2ea3b2f	224	_cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
18b5886e	225	_cleanup_(decrypted_image_unrefp) DecryptedImage *di = NULL;
a2ea3b2f LP	226	_cleanup_(dissected_image_unrefp) DissectedImage *m = NULL;
	227	int r;
	228
	229	log_parse_environment();
	230	log_open();
	231
	232	r = parse_argv(argc, argv);
	233	if (r <= 0)
149afb45	234	return r;
a2ea3b2f	235
e08f94ac	236	r = loop_device_make_by_path(arg_image, (arg_flags & DISSECT_IMAGE_READ_ONLY) ? O_RDONLY : O_RDWR, LO_FLAGS_PARTSCAN, &d);
149afb45 YW	237	if (r < 0)
149afb45 YW	238	return log_error_errno(r, "Failed to set up loopback device: %m");
a2ea3b2f	239
0389f4fa	240	r = verity_metadata_load(arg_image, NULL, arg_root_hash ? NULL : &arg_root_hash, &arg_root_hash_size,
c2923fdc LB	241	arg_verity_data ? NULL : &arg_verity_data,
c2923fdc LB	242	arg_root_hash_sig_path \|\| arg_root_hash_sig ? NULL : &arg_root_hash_sig_path);
e7cbe5cb LB	243	if (r < 0)
	244	return log_error_errno(r, "Failed to read verity artefacts for %s: %m", arg_image);
	245	arg_flags \|= arg_verity_data ? DISSECT_IMAGE_NO_PARTITION_TABLE : 0;
78ebe980	246
18d73705	247	r = dissect_image_and_warn(d->fd, arg_image, arg_root_hash, arg_root_hash_size, arg_verity_data, NULL, arg_flags, &m);
4526113f	248	if (r < 0)
149afb45	249	return r;
a2ea3b2f LP	250
	251	switch (arg_action) {
	252
	253	case ACTION_DISSECT: {
	254	unsigned i;
	255
	256	for (i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) {
	257	DissectedPartition *p = m->partitions + i;
	258
	259	if (!p->found)
	260	continue;
	261
	262	printf("Found %s '%s' partition",
	263	p->rw ? "writable" : "read-only",
	264	partition_designator_to_string(i));
	265
be30ad41 LP	266	if (!sd_id128_is_null(p->uuid))
	267	printf(" (UUID " SD_ID128_FORMAT_STR ")", SD_ID128_FORMAT_VAL(p->uuid));
	268
a2ea3b2f LP	269	if (p->fstype)
	270	printf(" of type %s", p->fstype);
	271
	272	if (p->architecture != _ARCHITECTURE_INVALID)
	273	printf(" for %s", architecture_to_string(p->architecture));
	274
e7cbe5cb LB	275	if (dissected_image_can_do_verity(m, i))
e7cbe5cb LB	276	printf(" %s verity", dissected_image_has_verity(m, i) ? "with" : "without");
4623e8e6	277
a2ea3b2f LP	278	if (p->partno >= 0)
	279	printf(" on partition #%i", p->partno);
	280
	281	if (p->node)
	282	printf(" (%s)", p->node);
	283
	284	putchar('\n');
	285	}
a1edd22e LP	286
a1edd22e LP	287	r = dissected_image_acquire_metadata(m);
149afb45 YW	288	if (r < 0)
149afb45 YW	289	return log_error_errno(r, "Failed to acquire image metadata: %m");
a1edd22e LP	290
	291	if (m->hostname)
	292	printf(" Hostname: %s\n", m->hostname);
	293
	294	if (!sd_id128_is_null(m->machine_id))
	295	printf("Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(m->machine_id));
	296
	297	if (!strv_isempty(m->machine_info)) {
	298	char p, q;
	299
	300	STRV_FOREACH_PAIR(p, q, m->machine_info)
	301	printf("%s %s=%s\n",
	302	p == m->machine_info ? "Mach. Info:" : " ",
	303	p, q);
	304	}
	305
	306	if (!strv_isempty(m->os_release)) {
	307	char p, q;
	308
	309	STRV_FOREACH_PAIR(p, q, m->os_release)
	310	printf("%s %s=%s\n",
	311	p == m->os_release ? "OS Release:" : " ",
	312	p, q);
	313	}
a2ea3b2f LP	314
	315	break;
	316	}
	317
	318	case ACTION_MOUNT:
c2923fdc	319	r = dissected_image_decrypt_interactively(m, NULL, arg_root_hash, arg_root_hash_size, arg_verity_data, arg_root_hash_sig_path, arg_root_hash_sig, arg_root_hash_sig_size, arg_flags, &di);
18b5886e	320	if (r < 0)
149afb45	321	return r;
18b5886e	322
2d3a5a73	323	r = dissected_image_mount(m, arg_path, UID_INVALID, arg_flags);
e475f729 LP	324	if (r == -EUCLEAN)
e475f729 LP	325	return log_error_errno(r, "File system check on image failed: %m");
149afb45 YW	326	if (r < 0)
149afb45 YW	327	return log_error_errno(r, "Failed to mount image: %m");
a2ea3b2f	328
18b5886e LP	329	if (di) {
18b5886e LP	330	r = decrypted_image_relinquish(di);
149afb45 YW	331	if (r < 0)
149afb45 YW	332	return log_error_errno(r, "Failed to relinquish DM devices: %m");
18b5886e LP	333	}
18b5886e LP	334
a2ea3b2f LP	335	loop_device_relinquish(d);
	336	break;
	337
	338	default:
	339	assert_not_reached("Unknown action.");
	340	}
	341
149afb45	342	return 0;
a2ea3b2f	343	}
149afb45 YW	344
149afb45 YW	345	DEFINE_MAIN_FUNCTION(run);