2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com> and
6 * Michael Neumann <mneumann@ntecs.de>
8 * Redistribution and use in source and binary forms, with or without
9 * 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
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * - volume-add: Add new volume to HAMMER filesystem
40 * - volume-del: Remove volume from HAMMER filesystem
47 static uint64_t check_volume(const char *vol_name);
50 * volume-add <device> <filesystem>
53 hammer_cmd_volume_add(char **av, int ac)
55 struct hammer_ioc_volume ioc;
59 fprintf(stderr, "hammer volume-add <device> <filesystem>\n");
64 char *filesystem = av[1];
66 fd = open(filesystem, O_RDONLY);
68 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n",
69 filesystem, strerror(errno));
76 bzero(&ioc, sizeof(ioc));
77 strncpy(ioc.device_name, device, MAXPATHLEN);
78 ioc.vol_size = check_volume(device);
79 ioc.boot_area_size = HAMMER_BOOT_NOMBYTES;
80 ioc.mem_area_size = HAMMER_MEM_NOMBYTES;
82 if (ioctl(fd, HAMMERIOC_ADD_VOLUME, &ioc) < 0) {
83 fprintf(stderr, "hammer volume-add ioctl: %s\n",
92 * volume-del <device> <filesystem>
95 hammer_cmd_volume_del(char **av, int ac)
97 struct hammer_ioc_volume ioc;
101 fprintf(stderr, "hammer volume-del <device> <filesystem>\n");
106 char *device = av[0];
107 char *filesystem = av[1];
109 fd = open(filesystem, O_RDONLY);
111 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n",
112 filesystem, strerror(errno));
119 bzero(&ioc, sizeof(ioc));
120 strncpy(ioc.device_name, device, MAXPATHLEN);
122 if (ioctl(fd, HAMMERIOC_DEL_VOLUME, &ioc) < 0) {
123 fprintf(stderr, "hammer volume-del ioctl: %s\n",
132 * Check basic volume characteristics. HAMMER filesystems use a minimum
133 * of a 16KB filesystem buffer size.
135 * Returns the size of the device.
137 * From newfs_hammer.c
141 check_volume(const char *vol_name)
143 struct partinfo pinfo;
147 * Get basic information about the volume
149 fd = open(vol_name, O_RDWR);
151 errx(1, "Unable to open %s R+W", vol_name);
153 if (ioctl(fd, DIOCGPART, &pinfo) < 0) {
154 errx(1, "No block device: %s", vol_name);
157 * When formatting a block device as a HAMMER volume the
158 * sector size must be compatible. HAMMER uses 16384 byte
159 * filesystem buffers.
161 if (pinfo.reserved_blocks) {
162 errx(1, "HAMMER cannot be placed in a partition "
163 "which overlaps the disklabel or MBR");
165 if (pinfo.media_blksize > 16384 ||
166 16384 % pinfo.media_blksize) {
167 errx(1, "A media sector size of %d is not supported",
168 pinfo.media_blksize);
172 return pinfo.media_size;