[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 "fd-util.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"
3ffd4af2	33	#include "fd-util.h"
07630cea LP	34	#include "gpt.h"
07630cea LP	35	#include "string-util.h"
81dadce5 KS	36	#include "udev.h"
81dadce5 KS	37
9ec6e95b	38	static void print_property(struct udev_device dev, bool test, const char name, const char *value) {
d13394a8	39	char s[256];
81dadce5	40
912541b0	41	s[0] = '\0';
81dadce5	42
33502ffe	43	if (streq(name, "TYPE")) {
912541b0	44	udev_builtin_add_property(dev, test, "ID_FS_TYPE", value);
81dadce5	45
33502ffe	46	} else if (streq(name, "USAGE")) {
912541b0	47	udev_builtin_add_property(dev, test, "ID_FS_USAGE", value);
e5d8ce91	48
33502ffe	49	} else if (streq(name, "VERSION")) {
912541b0	50	udev_builtin_add_property(dev, test, "ID_FS_VERSION", value);
81dadce5	51
33502ffe	52	} else if (streq(name, "UUID")) {
912541b0 KS	53	blkid_safe_string(value, s, sizeof(s));
	54	udev_builtin_add_property(dev, test, "ID_FS_UUID", s);
	55	blkid_encode_string(value, s, sizeof(s));
	56	udev_builtin_add_property(dev, test, "ID_FS_UUID_ENC", s);
81dadce5	57
33502ffe	58	} else if (streq(name, "UUID_SUB")) {
912541b0 KS	59	blkid_safe_string(value, s, sizeof(s));
	60	udev_builtin_add_property(dev, test, "ID_FS_UUID_SUB", s);
	61	blkid_encode_string(value, s, sizeof(s));
	62	udev_builtin_add_property(dev, test, "ID_FS_UUID_SUB_ENC", s);
81dadce5	63
33502ffe	64	} else if (streq(name, "LABEL")) {
912541b0 KS	65	blkid_safe_string(value, s, sizeof(s));
	66	udev_builtin_add_property(dev, test, "ID_FS_LABEL", s);
	67	blkid_encode_string(value, s, sizeof(s));
	68	udev_builtin_add_property(dev, test, "ID_FS_LABEL_ENC", s);
81dadce5	69
33502ffe	70	} else if (streq(name, "PTTYPE")) {
912541b0	71	udev_builtin_add_property(dev, test, "ID_PART_TABLE_TYPE", value);
81dadce5	72
894a156d DR	73	} else if (streq(name, "PTUUID")) {
	74	udev_builtin_add_property(dev, test, "ID_PART_TABLE_UUID", value);
	75
33502ffe	76	} else if (streq(name, "PART_ENTRY_NAME")) {
912541b0	77	blkid_encode_string(value, s, sizeof(s));
1b9e13e2	78	udev_builtin_add_property(dev, test, "ID_PART_ENTRY_NAME", s);
81dadce5	79
33502ffe	80	} else if (streq(name, "PART_ENTRY_TYPE")) {
912541b0	81	blkid_encode_string(value, s, sizeof(s));
1b9e13e2	82	udev_builtin_add_property(dev, test, "ID_PART_ENTRY_TYPE", s);
81dadce5	83
33502ffe	84	} else if (startswith(name, "PART_ENTRY_")) {
d5a89d7d	85	strscpyl(s, sizeof(s), "ID_", name, NULL);
a3642381	86	udev_builtin_add_property(dev, test, s, value);
ddb5bee1 ZAK	87
	88	} else if (streq(name, "SYSTEM_ID")) {
	89	blkid_encode_string(value, s, sizeof(s));
	90	udev_builtin_add_property(dev, test, "ID_FS_SYSTEM_ID", s);
	91
	92	} else if (streq(name, "PUBLISHER_ID")) {
	93	blkid_encode_string(value, s, sizeof(s));
	94	udev_builtin_add_property(dev, test, "ID_FS_PUBLISHER_ID", s);
	95
	96	} else if (streq(name, "APPLICATION_ID")) {
	97	blkid_encode_string(value, s, sizeof(s));
	98	udev_builtin_add_property(dev, test, "ID_FS_APPLICATION_ID", s);
	99
	100	} else if (streq(name, "BOOT_SYSTEM_ID")) {
	101	blkid_encode_string(value, s, sizeof(s));
	102	udev_builtin_add_property(dev, test, "ID_FS_BOOT_SYSTEM_ID", s);
912541b0	103	}
81dadce5 KS	104	}
81dadce5 KS	105
cbd353ce LP	106	static int find_gpt_root(struct udev_device *dev, blkid_probe pr, bool test) {
	107
	108	#if defined(GPT_ROOT_NATIVE) && defined(ENABLE_EFI)
	109
	110	_cleanup_free_ char *root_id = NULL;
	111	bool found_esp = false;
	112	blkid_partlist pl;
	113	int i, nvals, r;
	114
	115	assert(pr);
	116
	117	/* Iterate through the partitions on this disk, and see if the
	118	* EFI ESP we booted from is on it. If so, find the first root
	119	* disk, and add a property indicating its partition UUID. */
	120
	121	errno = 0;
	122	pl = blkid_probe_get_partitions(pr);
	123	if (!pl)
	124	return errno ? -errno : -ENOMEM;
	125
	126	nvals = blkid_partlist_numof_partitions(pl);
	127	for (i = 0; i < nvals; i++) {
	128	blkid_partition pp;
	129	const char stype, sid;
	130	sd_id128_t type;
	131
	132	pp = blkid_partlist_get_partition(pl, i);
	133	if (!pp)
	134	continue;
	135
	136	sid = blkid_partition_get_uuid(pp);
	137	if (!sid)
	138	continue;
	139
	140	stype = blkid_partition_get_type_string(pp);
	141	if (!stype)
	142	continue;
	143
	144	if (sd_id128_from_string(stype, &type) < 0)
	145	continue;
	146
	147	if (sd_id128_equal(type, GPT_ESP)) {
	148	sd_id128_t id, esp;
0238d4c6 KS	149	unsigned long long flags;
	150
	151	flags = blkid_partition_get_flags(pp);
	152	if (flags & GPT_FLAG_NO_AUTO)
	153	continue;
cbd353ce LP	154
	155	/* We found an ESP, let's see if it matches
	156	* the ESP we booted from. */
	157
	158	if (sd_id128_from_string(sid, &id) < 0)
	159	continue;
	160
	161	r = efi_loader_get_device_part_uuid(&esp);
	162	if (r < 0)
	163	return r;
	164
	165	if (sd_id128_equal(id, esp))
	166	found_esp = true;
	167
	168	} else if (sd_id128_equal(type, GPT_ROOT_NATIVE)) {
	169
	170	/* We found a suitable root partition, let's
	171	* remember the first one. */
	172
	173	if (!root_id) {
	174	root_id = strdup(sid);
	175	if (!root_id)
	176	return -ENOMEM;
	177	}
	178	}
	179	}
	180
	181	/* We found the ESP on this disk, and also found a root
329f7803	182	* partition, nice! Let's export its UUID */
cbd353ce	183	if (found_esp && root_id)
329f7803	184	udev_builtin_add_property(dev, test, "ID_PART_GPT_AUTO_ROOT_UUID", root_id);
cbd353ce LP	185	#endif
	186
	187	return 0;
	188	}
	189
9ec6e95b	190	static int probe_superblocks(blkid_probe pr) {
912541b0 KS	191	struct stat st;
912541b0 KS	192	int rc;
81dadce5	193
912541b0 KS	194	if (fstat(blkid_probe_get_fd(pr), &st))
912541b0 KS	195	return -1;
81dadce5	196
912541b0	197	blkid_probe_enable_partitions(pr, 1);
81dadce5	198
d13394a8 LP	199	if (!S_ISCHR(st.st_mode) &&
d13394a8 LP	200	blkid_probe_get_size(pr) <= 1024 * 1440 &&
912541b0 KS	201	blkid_probe_is_wholedisk(pr)) {
	202	/*
	203	* check if the small disk is partitioned, if yes then
	204	* don't probe for filesystems.
	205	*/
	206	blkid_probe_enable_superblocks(pr, 0);
81dadce5	207
912541b0 KS	208	rc = blkid_do_fullprobe(pr);
912541b0 KS	209	if (rc < 0)
d13394a8	210	return rc; /* -1 = error, 1 = nothing, 0 = success */
81dadce5	211
912541b0 KS	212	if (blkid_probe_lookup_value(pr, "PTTYPE", NULL, NULL) == 0)
	213	return 0; /* partition table detected */
	214	}
81dadce5	215
912541b0 KS	216	blkid_probe_set_partitions_flags(pr, BLKID_PARTS_ENTRY_DETAILS);
912541b0 KS	217	blkid_probe_enable_superblocks(pr, 1);
81dadce5	218
912541b0	219	return blkid_do_safeprobe(pr);
81dadce5 KS	220	}
81dadce5 KS	221
9ec6e95b	222	static int builtin_blkid(struct udev_device dev, int argc, char argv[], bool test) {
329f7803	223	const char *root_partition;
912541b0 KS	224	int64_t offset = 0;
912541b0 KS	225	bool noraid = false;
d13394a8	226	_cleanup_close_ int fd = -1;
912541b0 KS	227	blkid_probe pr;
	228	const char *data;
	229	const char *name;
d47f6ca5	230	const char *prtype = NULL;
912541b0 KS	231	int nvals;
912541b0 KS	232	int i;
912541b0	233	int err = 0;
cbd353ce	234	bool is_gpt = false;
912541b0 KS	235
	236	static const struct option options[] = {
	237	{ "offset", optional_argument, NULL, 'o' },
	238	{ "noraid", no_argument, NULL, 'R' },
	239	{}
	240	};
	241
	242	for (;;) {
	243	int option;
	244
	245	option = getopt_long(argc, argv, "oR", options, NULL);
	246	if (option == -1)
	247	break;
	248
	249	switch (option) {
	250	case 'o':
	251	offset = strtoull(optarg, NULL, 0);
	252	break;
	253	case 'R':
	254	noraid = true;
	255	break;
	256	}
	257	}
	258
	259	pr = blkid_new_probe();
b49d9b50	260	if (!pr)
912541b0	261	return EXIT_FAILURE;
912541b0 KS	262
	263	blkid_probe_set_superblocks_flags(pr,
	264	BLKID_SUBLKS_LABEL \| BLKID_SUBLKS_UUID \|
	265	BLKID_SUBLKS_TYPE \| BLKID_SUBLKS_SECTYPE \|
d47f6ca5 GP	266	BLKID_SUBLKS_USAGE \| BLKID_SUBLKS_VERSION \|
d47f6ca5 GP	267	BLKID_SUBLKS_BADCSUM);
912541b0 KS	268
	269	if (noraid)
	270	blkid_probe_filter_superblocks_usage(pr, BLKID_FLTR_NOTIN, BLKID_USAGE_RAID);
	271
	272	fd = open(udev_device_get_devnode(dev), O_RDONLY\|O_CLOEXEC);
	273	if (fd < 0) {
8d8ce9e2	274	err = log_debug_errno(errno, "Failure opening block device %s: %m", udev_device_get_devnode(dev));
912541b0 KS	275	goto out;
	276	}
	277
	278	err = blkid_probe_set_device(pr, fd, offset, 0);
	279	if (err < 0)
	280	goto out;
	281
1fa2f38f	282	log_debug("probe %s %sraid offset=%"PRIi64,
baa30fbc	283	udev_device_get_devnode(dev),
de0671ee	284	noraid ? "no" : "", offset);
912541b0 KS	285
	286	err = probe_superblocks(pr);
	287	if (err < 0)
	288	goto out;
d47f6ca5 GP	289	if (blkid_probe_has_value(pr, "SBBADCSUM")) {
	290	if (!blkid_probe_lookup_value(pr, "TYPE", &prtype, NULL))
	291	log_warning("incorrect %s checksum on %s",
	292	prtype, udev_device_get_devnode(dev));
	293	else
	294	log_warning("incorrect checksum on %s",
	295	udev_device_get_devnode(dev));
	296	goto out;
	297	}
912541b0	298
329f7803 LP	299	/* If we are a partition then our parent passed on the root
	300	* partition UUID to us */
	301	root_partition = udev_device_get_property_value(dev, "ID_PART_GPT_AUTO_ROOT_UUID");
	302
912541b0 KS	303	nvals = blkid_probe_numof_values(pr);
912541b0 KS	304	for (i = 0; i < nvals; i++) {
8a39439e	305	if (blkid_probe_get_value(pr, i, &name, &data, NULL))
912541b0	306	continue;
cbd353ce	307
8a39439e	308	print_property(dev, test, name, data);
cbd353ce	309
329f7803	310	/* Is this a disk with GPT partition table? */
cbd353ce LP	311	if (streq(name, "PTTYPE") && streq(data, "gpt"))
cbd353ce LP	312	is_gpt = true;
329f7803 LP	313
	314	/* Is this a partition that matches the root partition
	315	* property we inherited from our parent? */
	316	if (root_partition && streq(name, "PART_ENTRY_UUID") && streq(data, root_partition))
	317	udev_builtin_add_property(dev, test, "ID_PART_GPT_AUTO_ROOT", "1");
912541b0 KS	318	}
912541b0 KS	319
cbd353ce LP	320	if (is_gpt)
	321	find_gpt_root(dev, pr, test);
	322
912541b0	323	blkid_free_probe(pr);
81dadce5	324	out:
912541b0 KS	325	if (err < 0)
912541b0 KS	326	return EXIT_FAILURE;
d13394a8	327
912541b0	328	return EXIT_SUCCESS;
81dadce5 KS	329	}
	330
	331	const struct udev_builtin udev_builtin_blkid = {
912541b0 KS	332	.name = "blkid",
912541b0 KS	333	.cmd = builtin_blkid,
5ac0162c	334	.help = "Filesystem and partition probing",
912541b0	335	.run_once = true,
81dadce5	336	};