79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
/*
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* Copyright (C) 2009 Karel Zak <kzak@redhat.com>
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*
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* This file may be redistributed under the terms of the
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* GNU Lesser General Public License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <blkid.h>
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#include "c.h"
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int main(int argc, char *argv[])
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{
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int rc;
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char *devname;
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blkid_probe pr;
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blkid_topology tp;
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if (argc < 2) {
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fprintf(stderr, "usage: %s <device> "
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"-- checks based on libblkid for mkfs-like programs.\n",
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program_invocation_short_name);
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return EXIT_FAILURE;
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}
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devname = argv[1];
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pr = blkid_new_probe_from_filename(devname);
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if (!pr)
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err(EXIT_FAILURE, "%s: failed to create a new libblkid probe",
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devname);
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/*
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* check Filesystems / Partitions overwrite
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*/
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/* enable partitions probing (superblocks are enabled by default) */
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blkid_probe_enable_partitions(pr, TRUE);
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rc = blkid_do_fullprobe(pr);
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if (rc == -1)
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errx(EXIT_FAILURE, "%s: blkid_do_fullprobe() failed", devname);
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else if (rc == 0) {
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const char *type;
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if (!blkid_probe_lookup_value(pr, "TYPE", &type, NULL))
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errx(EXIT_FAILURE, "%s: appears to contain an existing "
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"%s superblock", devname, type);
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if (!blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL))
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errx(EXIT_FAILURE, "%s: appears to contain a partition "
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"table (%s)", devname, type);
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}
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/*
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* get topology details
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*/
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tp = blkid_probe_get_topology(pr);
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if (!tp)
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errx(EXIT_FAILURE, "%s: failed to read topology", devname);
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/* ... your mkfs.<type> code or so ...
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off = blkid_topology_get_alignment_offset(tp);
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*/
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blkid_free_probe(pr);
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return EXIT_SUCCESS;
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}
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