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>
32 __FBSDID("$FreeBSD$");
40 #include <sys/types.h>
42 #include "hammer_disk.h"
46 static hammer_volume_ondisk_t
49 hammer_volume_ondisk_t ondisk;
51 ondisk = read_buf(fp, 0, sizeof(*ondisk));
53 err(1, "failed to read ondisk");
59 test_ondisk(const hammer_volume_ondisk_t ondisk)
62 static hammer_uuid_t fsid, fstype;
63 static char label[64];
65 if (ondisk->vol_signature != HAMMER_FSBUF_VOLUME &&
66 ondisk->vol_signature != HAMMER_FSBUF_VOLUME_REV)
68 if (ondisk->vol_rootvol != HAMMER_ROOT_VOLNO)
70 if (ondisk->vol_no < 0 || ondisk->vol_no > HAMMER_MAX_VOLUMES - 1)
72 if (ondisk->vol_count < 1 || ondisk->vol_count > HAMMER_MAX_VOLUMES)
76 count = ondisk->vol_count;
78 memcpy(&fsid, &ondisk->vol_fsid, sizeof(fsid));
79 memcpy(&fstype, &ondisk->vol_fstype, sizeof(fstype));
80 strlcpy(label, ondisk->vol_label, sizeof(label));
82 if (ondisk->vol_count != count)
84 if (memcmp(&ondisk->vol_fsid, &fsid, sizeof(fsid)))
86 if (memcmp(&ondisk->vol_fstype, &fstype, sizeof(fstype)))
88 if (strcmp(ondisk->vol_label, label))
96 fstyp_hammer(FILE *fp, char *label, size_t size)
98 hammer_volume_ondisk_t ondisk;
101 ondisk = read_ondisk(fp);
102 if (ondisk->vol_no != HAMMER_ROOT_VOLNO)
104 if (ondisk->vol_count != 1)
106 if (test_ondisk(ondisk))
109 strlcpy(label, ondisk->vol_label, size);
117 test_volume(const char *volpath)
119 hammer_volume_ondisk_t ondisk;
123 if ((fp = fopen(volpath, "r")) == NULL)
124 err(1, "failed to open %s", volpath);
126 ondisk = read_ondisk(fp);
128 if (test_ondisk(ondisk))
131 volno = ondisk->vol_no;
138 __fsvtyp_hammer(const char *blkdevs, char *label, size_t size, int partial)
140 hammer_volume_ondisk_t ondisk = NULL;
142 char *dup, *p, *volpath, x[HAMMER_MAX_VOLUMES];
143 int i, volno, error = 1;
148 memset(x, 0, sizeof(x));
149 dup = strdup(blkdevs);
156 if ((p = strchr(p, ':')) != NULL)
158 if ((volno = test_volume(volpath)) == -1)
161 assert(volno < HAMMER_MAX_VOLUMES);
166 err(1, "invalid path %s", blkdevs);
167 if ((fp = fopen(volpath, "r")) == NULL)
168 err(1, "failed to open %s", volpath);
169 ondisk = read_ondisk(fp);
179 for (i = 0; i < HAMMER_MAX_VOLUMES; i++)
182 for (i = 0; i < HAMMER_MAX_VOLUMES; i++)
185 if (ondisk->vol_count != i)
187 for (; i < HAMMER_MAX_VOLUMES; i++)
191 strlcpy(label, ondisk->vol_label, size);
199 fsvtyp_hammer(const char *blkdevs, char *label, size_t size)
201 return (__fsvtyp_hammer(blkdevs, label, size, 0));
205 fsvtyp_hammer_partial(const char *blkdevs, char *label, size_t size)
207 return (__fsvtyp_hammer(blkdevs, label, size, 1));