kernel/vinum: One more -Wundef fix.
[dragonfly.git] / usr.sbin / fstyp / hammer2.c
bloba15a895bd3f913ba6ec5dc8eca16e674ab277548
1 /*-
2 * Copyright (c) 2017 The DragonFly Project
3 * All rights reserved.
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <err.h>
34 #include <vfs/hammer2/hammer2_disk.h>
36 #include "fstyp.h"
38 static hammer2_volume_data_t*
39 __read_voldata(FILE *fp)
41 hammer2_volume_data_t *voldata;
43 voldata = read_buf(fp, 0, sizeof(*voldata));
44 if (voldata == NULL)
45 err(1, "failed to read volume data");
47 return (voldata);
50 static int
51 __test_voldata(const hammer2_volume_data_t *voldata)
53 if (voldata->magic != HAMMER2_VOLUME_ID_HBO &&
54 voldata->magic != HAMMER2_VOLUME_ID_ABO)
55 return (1);
57 return (0);
60 int
61 fstyp_hammer2(FILE *fp, char *label, size_t size)
63 hammer2_volume_data_t *voldata;
64 int error = 1;
66 voldata = __read_voldata(fp);
67 if (__test_voldata(voldata))
68 goto done;
70 // XXX -l option not supported yet
71 //strlcpy(label, "label", size);
73 error = 0;
74 done:
75 free(voldata);
76 return (error);