+++ /dev/null
-/*
- * probe disks for filesystems and partitions
- *
- * Copyright (C) 2011 Kay Sievers <kay.sievers@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 <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <sys/stat.h>
-#include <blkid/blkid.h>
-
-#include "udev.h"
-
-static void print_property(struct udev_device *dev, bool test, const char *name, const char *value)
-{
- char s[265];
-
- s[0] = '\0';
-
- if (!strcmp(name, "TYPE")) {
- udev_builtin_add_property(dev, test, "ID_FS_TYPE", value);
-
- } else if (!strcmp(name, "USAGE")) {
- udev_builtin_add_property(dev, test, "ID_FS_USAGE", value);
-
- } else if (!strcmp(name, "VERSION")) {
- udev_builtin_add_property(dev, test, "ID_FS_VERSION", value);
-
- } else if (!strcmp(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 (!strcmp(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 (!strcmp(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 (!strcmp(name, "PTTYPE")) {
- udev_builtin_add_property(dev, test, "ID_PART_TABLE_TYPE", value);
-
- } else if (!strcmp(name, "PART_ENTRY_NAME")) {
- blkid_encode_string(value, s, sizeof(s));
- udev_builtin_add_property(dev, test, "ID_PART_ENTRY_NAME", s);
-
- } else if (!strcmp(name, "PART_ENTRY_TYPE")) {
- blkid_encode_string(value, s, sizeof(s));
- udev_builtin_add_property(dev, test, "ID_PART_ENTRY_TYPE", s);
-
- } else if (!strncmp(name, "PART_ENTRY_", 11)) {
- util_strscpyl(s, sizeof(s), "ID_", name, NULL);
- udev_builtin_add_property(dev, test, s, value);
- }
-}
-
-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 = succes */
-
- 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)
-{
- struct udev *udev = udev_device_get_udev(dev);
- int64_t offset = 0;
- bool noraid = false;
- int fd = -1;
- blkid_probe pr;
- const char *data;
- const char *name;
- int nvals;
- int i;
- size_t len;
- int err = 0;
-
- 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) {
- err = -ENOMEM;
- 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);
-
- 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) {
- fprintf(stderr, "error: %s: %m\n", udev_device_get_devnode(dev));
- goto out;
- }
-
- err = blkid_probe_set_device(pr, fd, offset, 0);
- if (err < 0)
- goto out;
-
- info(udev, "probe %s %sraid offset=%llu\n",
- udev_device_get_devnode(dev),
- noraid ? "no" : "", (unsigned long long) offset);
-
- err = probe_superblocks(pr);
- if (err < 0)
- goto out;
-
- nvals = blkid_probe_numof_values(pr);
- for (i = 0; i < nvals; i++) {
- if (blkid_probe_get_value(pr, i, &name, &data, &len))
- continue;
- len = strnlen((char *) data, len);
- print_property(dev, test, name, (char *) data);
- }
-
- blkid_free_probe(pr);
-out:
- if (fd > 0)
- close(fd);
- 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,
-};
~ianmdlvl / elogind.git / blobdiff