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libblkid/samples/superblocks.c
67 строк
2 KB
Andrey Albershteyn
libblkid: merge FS* flags into one FSINFO
04 май 2022, 19:43
04 май 2022, 19:43
c9b2297
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/* * Copyright (C) 2009 Karel Zak <kzak@redhat.com> * * This file may be redistributed under the terms of the * GNU Lesser General Public License. */ #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <errno.h> #include <blkid.h> #include "c.h" int main(int argc, char *argv[]) { int rc; char *devname; blkid_probe pr; if (argc < 2) { fprintf(stderr, "usage: %s <device> " "-- prints superblocks details about the device\n", program_invocation_short_name); return EXIT_FAILURE; } devname = argv[1]; pr = blkid_new_probe_from_filename(devname); if (!pr) err(EXIT_FAILURE, "%s: failed to create a new libblkid probe", devname); /* enable topology probing */ blkid_probe_enable_superblocks(pr, TRUE); /* set all flags */ blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_LABEL | BLKID_SUBLKS_LABELRAW | BLKID_SUBLKS_UUID | BLKID_SUBLKS_UUIDRAW | BLKID_SUBLKS_TYPE | BLKID_SUBLKS_SECTYPE | BLKID_SUBLKS_USAGE | BLKID_SUBLKS_VERSION | BLKID_SUBLKS_MAGIC | BLKID_SUBLKS_FSINFO); rc = blkid_do_safeprobe(pr); if (rc == -1) errx(EXIT_FAILURE, "%s: blkid_do_safeprobe() failed", devname); else if (rc == 1) warnx("%s: cannot gather information about superblocks", devname); else { int i, nvals = blkid_probe_numof_values(pr); for (i = 0; i < nvals; i++) { const char *name, *data; blkid_probe_get_value(pr, i, &name, &data, NULL); printf("\t%s = %s\n", name, data); } } blkid_free_probe(pr); return EXIT_SUCCESS; }