2 * Copyright (c) 2016-2019 The DragonFly Project
3 * Copyright (c) 2016-2019 Tomohiro Kusumi <tkusumi@netbsd.org>
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
38 #include <sys/types.h>
40 #include "hammer_disk.h"
44 extern int fsvtyp_hammer(const char *blkdevs, char *label, size_t size);
45 extern int fsvtyp_hammer_partial(const char *blkdevs, char *label, size_t size);
47 static hammer_volume_ondisk_t
50 hammer_volume_ondisk_t ondisk;
52 ondisk = read_buf(fp, 0, sizeof(*ondisk));
54 err(1, "failed to read ondisk");
60 test_ondisk(const hammer_volume_ondisk_t ondisk)
63 static hammer_uuid_t fsid, fstype;
64 static char label[64];
66 if (ondisk->vol_signature != HAMMER_FSBUF_VOLUME &&
67 ondisk->vol_signature != HAMMER_FSBUF_VOLUME_REV)
69 if (ondisk->vol_rootvol != HAMMER_ROOT_VOLNO)
71 if (ondisk->vol_no < 0 || ondisk->vol_no > HAMMER_MAX_VOLUMES - 1)
73 if (ondisk->vol_count < 1 || ondisk->vol_count > HAMMER_MAX_VOLUMES)
77 count = ondisk->vol_count;
79 memcpy(&fsid, &ondisk->vol_fsid, sizeof(fsid));
80 memcpy(&fstype, &ondisk->vol_fstype, sizeof(fstype));
81 strlcpy(label, ondisk->vol_label, sizeof(label));
83 if (ondisk->vol_count != count)
85 if (memcmp(&ondisk->vol_fsid, &fsid, sizeof(fsid)))
87 if (memcmp(&ondisk->vol_fstype, &fstype, sizeof(fstype)))
89 if (strcmp(ondisk->vol_label, label))
97 fstyp_hammer(FILE *fp, char *label, size_t size)
99 hammer_volume_ondisk_t ondisk;
102 ondisk = read_ondisk(fp);
103 if (ondisk->vol_no != HAMMER_ROOT_VOLNO)
105 if (ondisk->vol_count != 1)
107 if (test_ondisk(ondisk))
110 strlcpy(label, ondisk->vol_label, size);
118 test_volume(const char *volpath)
120 hammer_volume_ondisk_t ondisk;
124 if ((fp = fopen(volpath, "r")) == NULL)
125 err(1, "failed to open %s", volpath);
127 ondisk = read_ondisk(fp);
129 if (test_ondisk(ondisk))
132 volno = ondisk->vol_no;
139 __fsvtyp_hammer(const char *blkdevs, char *label, size_t size, int partial)
141 hammer_volume_ondisk_t ondisk = NULL;
143 char *dup, *p, *volpath, x[HAMMER_MAX_VOLUMES];
144 int i, volno, error = 1;
149 memset(x, 0, sizeof(x));
150 dup = strdup(blkdevs);
157 if ((p = strchr(p, ':')) != NULL)
159 if ((volno = test_volume(volpath)) == -1)
162 assert(volno < HAMMER_MAX_VOLUMES);
167 err(1, "invalid path %s", blkdevs);
168 if ((fp = fopen(volpath, "r")) == NULL)
169 err(1, "failed to open %s", volpath);
170 ondisk = read_ondisk(fp);
180 for (i = 0; i < HAMMER_MAX_VOLUMES; i++)
183 for (i = 0; i < HAMMER_MAX_VOLUMES; i++)
186 if (ondisk->vol_count != i)
188 for (; i < HAMMER_MAX_VOLUMES; i++)
192 strlcpy(label, ondisk->vol_label, size);
200 fsvtyp_hammer(const char *blkdevs, char *label, size_t size)
202 return (__fsvtyp_hammer(blkdevs, label, size, 0));
206 fsvtyp_hammer_partial(const char *blkdevs, char *label, size_t size)
208 return (__fsvtyp_hammer(blkdevs, label, size, 1));