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Viewing changes to libblkid/samples/partitions.c

  • Committer: Package Import Robot
  • Author(s): LaMont Jones
  • Date: 2011-11-03 15:38:23 UTC
  • mto: (4.5.5 sid) (1.6.4)
  • mto: This revision was merged to the branch mainline in revision 85.
  • Revision ID: package-import@ubuntu.com-20111103153823-10sx16jprzxlhkqf
Import upstream version 2.20.1

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libblkid/samples/partitions.c
 
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/*
 
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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 i, nparts;
 
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        char *devname;
 
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        blkid_probe pr;
 
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        blkid_partlist ls;
 
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        blkid_parttable root_tab;
 
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        if (argc < 2) {
 
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                fprintf(stderr, "usage: %s <device|file>  "
 
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                                "-- prints partitions\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: faild to create a new libblkid probe",
 
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                                devname);
 
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        /* Binary interface */
 
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        ls = blkid_probe_get_partitions(pr);
 
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        if (!ls)
 
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                errx(EXIT_FAILURE, "%s: failed to read partitions\n", devname);
 
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        /*
 
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         * Print info about the primary (root) partition table
 
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         */
 
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        root_tab = blkid_partlist_get_table(ls);
 
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        if (!root_tab)
 
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                errx(EXIT_FAILURE, "%s: does not contains any "
 
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                                 "known partition table\n", devname);
 
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        printf("size: %jd, sector size: %u, PT: %s, offset: %jd\n---\n",
 
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                blkid_probe_get_size(pr),
 
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                blkid_probe_get_sectorsize(pr),
 
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                blkid_parttable_get_type(root_tab),
 
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                blkid_parttable_get_offset(root_tab));
 
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        /*
 
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         * List partitions
 
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         */
 
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        nparts = blkid_partlist_numof_partitions(ls);
 
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        if (!nparts)
 
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                goto done;
 
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        for (i = 0; i < nparts; i++) {
 
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                const char *p;
 
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                blkid_partition par = blkid_partlist_get_partition(ls, i);
 
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                blkid_parttable tab = blkid_partition_get_table(par);
 
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                printf("#%d: %10llu %10llu  0x%x",
 
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                        blkid_partition_get_partno(par),
 
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                        (unsigned long long) blkid_partition_get_start(par),
 
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                        (unsigned long long) blkid_partition_get_size(par),
 
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                        blkid_partition_get_type(par));
 
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                if (root_tab != tab)
 
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                        /* subpartition (BSD, Minix, ...) */
 
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                        printf(" (%s)", blkid_parttable_get_type(tab));
 
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                p = blkid_partition_get_name(par);
 
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                if (p)
 
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                        printf(" name='%s'", p);
 
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                p = blkid_partition_get_uuid(par);
 
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                if (p)
 
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                        printf(" uuid='%s'", p);
 
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                p = blkid_partition_get_type_string(par);
 
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                if (p)
 
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                        printf(" type='%s'", p);
 
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                putc('\n', stdout);
 
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        }
 
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done:
 
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        blkid_free_probe(pr);
 
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        return EXIT_SUCCESS;
 
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}