[thirdparty/systemd.git] / src / udev / udev-builtin-blkid.c

/*
 * probe disks for filesystems and partitions
 *
 * Copyright (C) 2011 Kay Sievers <kay@vrfy.org>
 * Copyright (C) 2011 Karel Zak <kzak@redhat.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <blkid/blkid.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

#include "sd-id128.h"

#include "efivars.h"
#include "gpt.h"
#include "string-util.h"
#include "udev.h"

static void print_property(struct udev_device *dev, bool test, const char *name, const char *value) {
        char s[256];

        s[0] = '\0';

        if (streq(name, "TYPE")) {
                udev_builtin_add_property(dev, test, "ID_FS_TYPE", value);

        } else if (streq(name, "USAGE")) {
                udev_builtin_add_property(dev, test, "ID_FS_USAGE", value);

        } else if (streq(name, "VERSION")) {
                udev_builtin_add_property(dev, test, "ID_FS_VERSION", value);

        } else if (streq(name, "UUID")) {
                blkid_safe_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_UUID", s);
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_UUID_ENC", s);

        } else if (streq(name, "UUID_SUB")) {
                blkid_safe_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_UUID_SUB", s);
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_UUID_SUB_ENC", s);

        } else if (streq(name, "LABEL")) {
                blkid_safe_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_LABEL", s);
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_LABEL_ENC", s);

        } else if (streq(name, "PTTYPE")) {
                udev_builtin_add_property(dev, test, "ID_PART_TABLE_TYPE", value);

        } else if (streq(name, "PTUUID")) {
                udev_builtin_add_property(dev, test, "ID_PART_TABLE_UUID", value);

        } else if (streq(name, "PART_ENTRY_NAME")) {
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_PART_ENTRY_NAME", s);

        } else if (streq(name, "PART_ENTRY_TYPE")) {
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_PART_ENTRY_TYPE", s);

        } else if (startswith(name, "PART_ENTRY_")) {
                strscpyl(s, sizeof(s), "ID_", name, NULL);
                udev_builtin_add_property(dev, test, s, value);

        } else if (streq(name, "SYSTEM_ID")) {
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_SYSTEM_ID", s);

        } else if (streq(name, "PUBLISHER_ID")) {
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_PUBLISHER_ID", s);

        } else if (streq(name, "APPLICATION_ID")) {
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_APPLICATION_ID", s);

        } else if (streq(name, "BOOT_SYSTEM_ID")) {
                blkid_encode_string(value, s, sizeof(s));
                udev_builtin_add_property(dev, test, "ID_FS_BOOT_SYSTEM_ID", s);
        }
}

static int find_gpt_root(struct udev_device *dev, blkid_probe pr, bool test) {

#if defined(GPT_ROOT_NATIVE) && defined(ENABLE_EFI)

        _cleanup_free_ char *root_id = NULL;
        bool found_esp = false;
        blkid_partlist pl;
        int i, nvals, r;

        assert(pr);

        /* Iterate through the partitions on this disk, and see if the
         * EFI ESP we booted from is on it. If so, find the first root
         * disk, and add a property indicating its partition UUID. */

        errno = 0;
        pl = blkid_probe_get_partitions(pr);
        if (!pl)
                return errno ? -errno : -ENOMEM;

        nvals = blkid_partlist_numof_partitions(pl);
        for (i = 0; i < nvals; i++) {
                blkid_partition pp;
                const char *stype, *sid;
                sd_id128_t type;

                pp = blkid_partlist_get_partition(pl, i);
                if (!pp)
                        continue;

                sid = blkid_partition_get_uuid(pp);
                if (!sid)
                        continue;

                stype = blkid_partition_get_type_string(pp);
                if (!stype)
                        continue;

                if (sd_id128_from_string(stype, &type) < 0)
                        continue;

                if (sd_id128_equal(type, GPT_ESP)) {
                        sd_id128_t id, esp;
                        unsigned long long flags;

                        flags = blkid_partition_get_flags(pp);
                        if (flags & GPT_FLAG_NO_AUTO)
                                continue;

                        /* We found an ESP, let's see if it matches
                         * the ESP we booted from. */

                        if (sd_id128_from_string(sid, &id) < 0)
                                continue;

                        r = efi_loader_get_device_part_uuid(&esp);
                        if (r < 0)
                                return r;

                        if (sd_id128_equal(id, esp))
                                found_esp = true;

                } else if (sd_id128_equal(type, GPT_ROOT_NATIVE)) {

                        /* We found a suitable root partition, let's
                         * remember the first one. */

                        if (!root_id) {
                                root_id = strdup(sid);
                                if (!root_id)
                                        return -ENOMEM;
                        }
                }
        }

        /* We found the ESP on this disk, and also found a root
         * partition, nice! Let's export its UUID */
        if (found_esp && root_id)
                udev_builtin_add_property(dev, test, "ID_PART_GPT_AUTO_ROOT_UUID", root_id);
#endif

        return 0;
}

static int probe_superblocks(blkid_probe pr) {
        struct stat st;
        int rc;

        if (fstat(blkid_probe_get_fd(pr), &st))
                return -1;

        blkid_probe_enable_partitions(pr, 1);

        if (!S_ISCHR(st.st_mode) &&
            blkid_probe_get_size(pr) <= 1024 * 1440 &&
            blkid_probe_is_wholedisk(pr)) {
                /*
                 * check if the small disk is partitioned, if yes then
                 * don't probe for filesystems.
                 */
                blkid_probe_enable_superblocks(pr, 0);

                rc = blkid_do_fullprobe(pr);
                if (rc < 0)
                        return rc;        /* -1 = error, 1 = nothing, 0 = success */

                if (blkid_probe_lookup_value(pr, "PTTYPE", NULL, NULL) == 0)
                        return 0;        /* partition table detected */
        }

        blkid_probe_set_partitions_flags(pr, BLKID_PARTS_ENTRY_DETAILS);
        blkid_probe_enable_superblocks(pr, 1);

        return blkid_do_safeprobe(pr);
}

static int builtin_blkid(struct udev_device *dev, int argc, char *argv[], bool test) {
        const char *root_partition;
        int64_t offset = 0;
        bool noraid = false;
        _cleanup_close_ int fd = -1;
        blkid_probe pr;
        const char *data;
        const char *name;
        const char *prtype = NULL;
        int nvals;
        int i;
        int err = 0;
        bool is_gpt = false;

        static const struct option options[] = {
                { "offset", optional_argument, NULL, 'o' },
                { "noraid", no_argument, NULL, 'R' },
                {}
        };

        for (;;) {
                int option;

                option = getopt_long(argc, argv, "oR", options, NULL);
                if (option == -1)
                        break;

                switch (option) {
                case 'o':
                        offset = strtoull(optarg, NULL, 0);
                        break;
                case 'R':
                        noraid = true;
                        break;
                }
        }

        pr = blkid_new_probe();
        if (!pr)
                return EXIT_FAILURE;

        blkid_probe_set_superblocks_flags(pr,
                BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID |
                BLKID_SUBLKS_TYPE | BLKID_SUBLKS_SECTYPE |
                BLKID_SUBLKS_USAGE | BLKID_SUBLKS_VERSION |
                BLKID_SUBLKS_BADCSUM);

        if (noraid)
                blkid_probe_filter_superblocks_usage(pr, BLKID_FLTR_NOTIN, BLKID_USAGE_RAID);

        fd = open(udev_device_get_devnode(dev), O_RDONLY|O_CLOEXEC);
        if (fd < 0) {
                err = log_debug_errno(errno, "Failure opening block device %s: %m", udev_device_get_devnode(dev));
                goto out;
        }

        err = blkid_probe_set_device(pr, fd, offset, 0);
        if (err < 0)
                goto out;

        log_debug("probe %s %sraid offset=%"PRIi64,
                  udev_device_get_devnode(dev),
                  noraid ? "no" : "", offset);

        err = probe_superblocks(pr);
        if (err < 0)
                goto out;
        if (blkid_probe_has_value(pr, "SBBADCSUM")) {
                if (!blkid_probe_lookup_value(pr, "TYPE", &prtype, NULL))
                        log_warning("incorrect %s checksum on %s",
                                    prtype, udev_device_get_devnode(dev));
                else
                        log_warning("incorrect checksum on %s",
                                    udev_device_get_devnode(dev));
                goto out;
        }

        /* If we are a partition then our parent passed on the root
         * partition UUID to us */
        root_partition = udev_device_get_property_value(dev, "ID_PART_GPT_AUTO_ROOT_UUID");

        nvals = blkid_probe_numof_values(pr);
        for (i = 0; i < nvals; i++) {
                if (blkid_probe_get_value(pr, i, &name, &data, NULL))
                        continue;

                print_property(dev, test, name, data);

                /* Is this a disk with GPT partition table? */
                if (streq(name, "PTTYPE") && streq(data, "gpt"))
                        is_gpt = true;

                /* Is this a partition that matches the root partition
                 * property we inherited from our parent? */
                if (root_partition && streq(name, "PART_ENTRY_UUID") && streq(data, root_partition))
                        udev_builtin_add_property(dev, test, "ID_PART_GPT_AUTO_ROOT", "1");
        }

        if (is_gpt)
                find_gpt_root(dev, pr, test);

        blkid_free_probe(pr);
out:
        if (err < 0)
                return EXIT_FAILURE;

        return EXIT_SUCCESS;
}

const struct udev_builtin udev_builtin_blkid = {
        .name = "blkid",
        .cmd = builtin_blkid,
        .help = "Filesystem and partition probing",
        .run_once = true,
};
Commit	Line	Data
81dadce5 KS	1	/*
	2	* probe disks for filesystems and partitions
	3	*
1298001e	4	* Copyright (C) 2011 Kay Sievers <kay@vrfy.org>
81dadce5 KS	5	* Copyright (C) 2011 Karel Zak <kzak@redhat.com>
	6	*
	7	* This program is free software: you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation, either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
07630cea	21	#include <blkid/blkid.h>
81dadce5 KS	22	#include <errno.h>
81dadce5 KS	23	#include <fcntl.h>
c38a141b	24	#include <getopt.h>
07630cea LP	25	#include <stdio.h>
	26	#include <stdlib.h>
	27	#include <string.h>
81dadce5	28	#include <sys/stat.h>
81dadce5	29
cbd353ce	30	#include "sd-id128.h"
07630cea	31
cbd353ce	32	#include "efivars.h"
07630cea LP	33	#include "gpt.h"
07630cea LP	34	#include "string-util.h"
81dadce5 KS	35	#include "udev.h"
81dadce5 KS	36
9ec6e95b	37	static void print_property(struct udev_device dev, bool test, const char name, const char *value) {
d13394a8	38	char s[256];
81dadce5	39
912541b0	40	s[0] = '\0';
81dadce5	41
33502ffe	42	if (streq(name, "TYPE")) {
912541b0	43	udev_builtin_add_property(dev, test, "ID_FS_TYPE", value);
81dadce5	44
33502ffe	45	} else if (streq(name, "USAGE")) {
912541b0	46	udev_builtin_add_property(dev, test, "ID_FS_USAGE", value);
e5d8ce91	47
33502ffe	48	} else if (streq(name, "VERSION")) {
912541b0	49	udev_builtin_add_property(dev, test, "ID_FS_VERSION", value);
81dadce5	50
33502ffe	51	} else if (streq(name, "UUID")) {
912541b0 KS	52	blkid_safe_string(value, s, sizeof(s));
	53	udev_builtin_add_property(dev, test, "ID_FS_UUID", s);
	54	blkid_encode_string(value, s, sizeof(s));
	55	udev_builtin_add_property(dev, test, "ID_FS_UUID_ENC", s);
81dadce5	56
33502ffe	57	} else if (streq(name, "UUID_SUB")) {
912541b0 KS	58	blkid_safe_string(value, s, sizeof(s));
	59	udev_builtin_add_property(dev, test, "ID_FS_UUID_SUB", s);
	60	blkid_encode_string(value, s, sizeof(s));
	61	udev_builtin_add_property(dev, test, "ID_FS_UUID_SUB_ENC", s);
81dadce5	62
33502ffe	63	} else if (streq(name, "LABEL")) {
912541b0 KS	64	blkid_safe_string(value, s, sizeof(s));
	65	udev_builtin_add_property(dev, test, "ID_FS_LABEL", s);
	66	blkid_encode_string(value, s, sizeof(s));
	67	udev_builtin_add_property(dev, test, "ID_FS_LABEL_ENC", s);
81dadce5	68
33502ffe	69	} else if (streq(name, "PTTYPE")) {
912541b0	70	udev_builtin_add_property(dev, test, "ID_PART_TABLE_TYPE", value);
81dadce5	71
894a156d DR	72	} else if (streq(name, "PTUUID")) {
	73	udev_builtin_add_property(dev, test, "ID_PART_TABLE_UUID", value);
	74
33502ffe	75	} else if (streq(name, "PART_ENTRY_NAME")) {
912541b0	76	blkid_encode_string(value, s, sizeof(s));
1b9e13e2	77	udev_builtin_add_property(dev, test, "ID_PART_ENTRY_NAME", s);
81dadce5	78
33502ffe	79	} else if (streq(name, "PART_ENTRY_TYPE")) {
912541b0	80	blkid_encode_string(value, s, sizeof(s));
1b9e13e2	81	udev_builtin_add_property(dev, test, "ID_PART_ENTRY_TYPE", s);
81dadce5	82
33502ffe	83	} else if (startswith(name, "PART_ENTRY_")) {
d5a89d7d	84	strscpyl(s, sizeof(s), "ID_", name, NULL);
a3642381	85	udev_builtin_add_property(dev, test, s, value);
ddb5bee1 ZAK	86
	87	} else if (streq(name, "SYSTEM_ID")) {
	88	blkid_encode_string(value, s, sizeof(s));
	89	udev_builtin_add_property(dev, test, "ID_FS_SYSTEM_ID", s);
	90
	91	} else if (streq(name, "PUBLISHER_ID")) {
	92	blkid_encode_string(value, s, sizeof(s));
	93	udev_builtin_add_property(dev, test, "ID_FS_PUBLISHER_ID", s);
	94
	95	} else if (streq(name, "APPLICATION_ID")) {
	96	blkid_encode_string(value, s, sizeof(s));
	97	udev_builtin_add_property(dev, test, "ID_FS_APPLICATION_ID", s);
	98
	99	} else if (streq(name, "BOOT_SYSTEM_ID")) {
	100	blkid_encode_string(value, s, sizeof(s));
	101	udev_builtin_add_property(dev, test, "ID_FS_BOOT_SYSTEM_ID", s);
912541b0	102	}
81dadce5 KS	103	}
81dadce5 KS	104
cbd353ce LP	105	static int find_gpt_root(struct udev_device *dev, blkid_probe pr, bool test) {
	106
	107	#if defined(GPT_ROOT_NATIVE) && defined(ENABLE_EFI)
	108
	109	_cleanup_free_ char *root_id = NULL;
	110	bool found_esp = false;
	111	blkid_partlist pl;
	112	int i, nvals, r;
	113
	114	assert(pr);
	115
	116	/* Iterate through the partitions on this disk, and see if the
	117	* EFI ESP we booted from is on it. If so, find the first root
	118	* disk, and add a property indicating its partition UUID. */
	119
	120	errno = 0;
	121	pl = blkid_probe_get_partitions(pr);
	122	if (!pl)
	123	return errno ? -errno : -ENOMEM;
	124
	125	nvals = blkid_partlist_numof_partitions(pl);
	126	for (i = 0; i < nvals; i++) {
	127	blkid_partition pp;
	128	const char stype, sid;
	129	sd_id128_t type;
	130
	131	pp = blkid_partlist_get_partition(pl, i);
	132	if (!pp)
	133	continue;
	134
	135	sid = blkid_partition_get_uuid(pp);
	136	if (!sid)
	137	continue;
	138
	139	stype = blkid_partition_get_type_string(pp);
	140	if (!stype)
	141	continue;
	142
	143	if (sd_id128_from_string(stype, &type) < 0)
	144	continue;
	145
	146	if (sd_id128_equal(type, GPT_ESP)) {
	147	sd_id128_t id, esp;
0238d4c6 KS	148	unsigned long long flags;
	149
	150	flags = blkid_partition_get_flags(pp);
	151	if (flags & GPT_FLAG_NO_AUTO)
	152	continue;
cbd353ce LP	153
	154	/* We found an ESP, let's see if it matches
	155	* the ESP we booted from. */
	156
	157	if (sd_id128_from_string(sid, &id) < 0)
	158	continue;
	159
	160	r = efi_loader_get_device_part_uuid(&esp);
	161	if (r < 0)
	162	return r;
	163
	164	if (sd_id128_equal(id, esp))
	165	found_esp = true;
	166
	167	} else if (sd_id128_equal(type, GPT_ROOT_NATIVE)) {
	168
	169	/* We found a suitable root partition, let's
	170	* remember the first one. */
	171
	172	if (!root_id) {
	173	root_id = strdup(sid);
	174	if (!root_id)
	175	return -ENOMEM;
	176	}
	177	}
	178	}
	179
	180	/* We found the ESP on this disk, and also found a root
329f7803	181	* partition, nice! Let's export its UUID */
cbd353ce	182	if (found_esp && root_id)
329f7803	183	udev_builtin_add_property(dev, test, "ID_PART_GPT_AUTO_ROOT_UUID", root_id);
cbd353ce LP	184	#endif
	185
	186	return 0;
	187	}
	188
9ec6e95b	189	static int probe_superblocks(blkid_probe pr) {
912541b0 KS	190	struct stat st;
912541b0 KS	191	int rc;
81dadce5	192
912541b0 KS	193	if (fstat(blkid_probe_get_fd(pr), &st))
912541b0 KS	194	return -1;
81dadce5	195
912541b0	196	blkid_probe_enable_partitions(pr, 1);
81dadce5	197
d13394a8 LP	198	if (!S_ISCHR(st.st_mode) &&
d13394a8 LP	199	blkid_probe_get_size(pr) <= 1024 * 1440 &&
912541b0 KS	200	blkid_probe_is_wholedisk(pr)) {
	201	/*
	202	* check if the small disk is partitioned, if yes then
	203	* don't probe for filesystems.
	204	*/
	205	blkid_probe_enable_superblocks(pr, 0);
81dadce5	206
912541b0 KS	207	rc = blkid_do_fullprobe(pr);
912541b0 KS	208	if (rc < 0)
d13394a8	209	return rc; /* -1 = error, 1 = nothing, 0 = success */
81dadce5	210
912541b0 KS	211	if (blkid_probe_lookup_value(pr, "PTTYPE", NULL, NULL) == 0)
	212	return 0; /* partition table detected */
	213	}
81dadce5	214
912541b0 KS	215	blkid_probe_set_partitions_flags(pr, BLKID_PARTS_ENTRY_DETAILS);
912541b0 KS	216	blkid_probe_enable_superblocks(pr, 1);
81dadce5	217
912541b0	218	return blkid_do_safeprobe(pr);
81dadce5 KS	219	}
81dadce5 KS	220
9ec6e95b	221	static int builtin_blkid(struct udev_device dev, int argc, char argv[], bool test) {
329f7803	222	const char *root_partition;
912541b0 KS	223	int64_t offset = 0;
912541b0 KS	224	bool noraid = false;
d13394a8	225	_cleanup_close_ int fd = -1;
912541b0 KS	226	blkid_probe pr;
	227	const char *data;
	228	const char *name;
d47f6ca5	229	const char *prtype = NULL;
912541b0 KS	230	int nvals;
912541b0 KS	231	int i;
912541b0	232	int err = 0;
cbd353ce	233	bool is_gpt = false;
912541b0 KS	234
	235	static const struct option options[] = {
	236	{ "offset", optional_argument, NULL, 'o' },
	237	{ "noraid", no_argument, NULL, 'R' },
	238	{}
	239	};
	240
	241	for (;;) {
	242	int option;
	243
	244	option = getopt_long(argc, argv, "oR", options, NULL);
	245	if (option == -1)
	246	break;
	247
	248	switch (option) {
	249	case 'o':
	250	offset = strtoull(optarg, NULL, 0);
	251	break;
	252	case 'R':
	253	noraid = true;
	254	break;
	255	}
	256	}
	257
	258	pr = blkid_new_probe();
b49d9b50	259	if (!pr)
912541b0	260	return EXIT_FAILURE;
912541b0 KS	261
	262	blkid_probe_set_superblocks_flags(pr,
	263	BLKID_SUBLKS_LABEL \| BLKID_SUBLKS_UUID \|
	264	BLKID_SUBLKS_TYPE \| BLKID_SUBLKS_SECTYPE \|
d47f6ca5 GP	265	BLKID_SUBLKS_USAGE \| BLKID_SUBLKS_VERSION \|
d47f6ca5 GP	266	BLKID_SUBLKS_BADCSUM);
912541b0 KS	267
	268	if (noraid)
	269	blkid_probe_filter_superblocks_usage(pr, BLKID_FLTR_NOTIN, BLKID_USAGE_RAID);
	270
	271	fd = open(udev_device_get_devnode(dev), O_RDONLY\|O_CLOEXEC);
	272	if (fd < 0) {
8d8ce9e2	273	err = log_debug_errno(errno, "Failure opening block device %s: %m", udev_device_get_devnode(dev));
912541b0 KS	274	goto out;
	275	}
	276
	277	err = blkid_probe_set_device(pr, fd, offset, 0);
	278	if (err < 0)
	279	goto out;
	280
1fa2f38f	281	log_debug("probe %s %sraid offset=%"PRIi64,
baa30fbc	282	udev_device_get_devnode(dev),
de0671ee	283	noraid ? "no" : "", offset);
912541b0 KS	284
	285	err = probe_superblocks(pr);
	286	if (err < 0)
	287	goto out;
d47f6ca5 GP	288	if (blkid_probe_has_value(pr, "SBBADCSUM")) {
	289	if (!blkid_probe_lookup_value(pr, "TYPE", &prtype, NULL))
	290	log_warning("incorrect %s checksum on %s",
	291	prtype, udev_device_get_devnode(dev));
	292	else
	293	log_warning("incorrect checksum on %s",
	294	udev_device_get_devnode(dev));
	295	goto out;
	296	}
912541b0	297
329f7803 LP	298	/* If we are a partition then our parent passed on the root
	299	* partition UUID to us */
	300	root_partition = udev_device_get_property_value(dev, "ID_PART_GPT_AUTO_ROOT_UUID");
	301
912541b0 KS	302	nvals = blkid_probe_numof_values(pr);
912541b0 KS	303	for (i = 0; i < nvals; i++) {
8a39439e	304	if (blkid_probe_get_value(pr, i, &name, &data, NULL))
912541b0	305	continue;
cbd353ce	306
8a39439e	307	print_property(dev, test, name, data);
cbd353ce	308
329f7803	309	/* Is this a disk with GPT partition table? */
cbd353ce LP	310	if (streq(name, "PTTYPE") && streq(data, "gpt"))
cbd353ce LP	311	is_gpt = true;
329f7803 LP	312
	313	/* Is this a partition that matches the root partition
	314	* property we inherited from our parent? */
	315	if (root_partition && streq(name, "PART_ENTRY_UUID") && streq(data, root_partition))
	316	udev_builtin_add_property(dev, test, "ID_PART_GPT_AUTO_ROOT", "1");
912541b0 KS	317	}
912541b0 KS	318
cbd353ce LP	319	if (is_gpt)
	320	find_gpt_root(dev, pr, test);
	321
912541b0	322	blkid_free_probe(pr);
81dadce5	323	out:
912541b0 KS	324	if (err < 0)
912541b0 KS	325	return EXIT_FAILURE;
d13394a8	326
912541b0	327	return EXIT_SUCCESS;
81dadce5 KS	328	}
	329
	330	const struct udev_builtin udev_builtin_blkid = {
912541b0 KS	331	.name = "blkid",
912541b0 KS	332	.cmd = builtin_blkid,
5ac0162c	333	.help = "Filesystem and partition probing",
912541b0	334	.run_once = true,
81dadce5	335	};