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
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30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * - volume-add: Add new volume to HAMMER filesystem
45 static uint64_t check_volume(const char *vol_name);
46 static void volume_add_usage(int exit_code);
49 * volume-add <device> <filesystem>
52 hammer_cmd_volume_add(char **av, int ac)
54 struct hammer_ioc_volume_add ioc;
58 char *filesystem = av[1];
62 fd = open(filesystem, O_RDONLY);
64 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n",
65 filesystem, strerror(errno));
72 bzero(&ioc, sizeof(ioc));
73 strncpy(ioc.device_name, device, MAXPATHLEN);
74 ioc.vol_size = check_volume(device);
75 ioc.boot_area_size = HAMMER_BOOT_NOMBYTES;
76 ioc.mem_area_size = HAMMER_MEM_NOMBYTES;
78 if (ioctl(fd, HAMMERIOC_ADD_VOLUME, &ioc) < 0) {
79 fprintf(stderr, "hammer volume-add ioctl: %s\n",
89 volume_add_usage(int exit_code)
91 fprintf(stderr, "hammer volume-add <device> <filesystem>\n");
96 * Check basic volume characteristics. HAMMER filesystems use a minimum
97 * of a 16KB filesystem buffer size.
99 * Returns the size of the device.
101 * From newfs_hammer.c
105 check_volume(const char *vol_name)
107 struct partinfo pinfo;
111 * Get basic information about the volume
113 fd = open(vol_name, O_RDWR);
115 errx(1, "Unable to open %s R+W", vol_name);
117 if (ioctl(fd, DIOCGPART, &pinfo) < 0) {
118 errx(1, "No block device: %s", vol_name);
121 * When formatting a block device as a HAMMER volume the
122 * sector size must be compatible. HAMMER uses 16384 byte
123 * filesystem buffers.
125 if (pinfo.reserved_blocks) {
126 errx(1, "HAMMER cannot be placed in a partition "
127 "which overlaps the disklabel or MBR");
129 if (pinfo.media_blksize > 16384 ||
130 16384 % pinfo.media_blksize) {
131 errx(1, "A media sector size of %d is not supported",
132 pinfo.media_blksize);
136 return pinfo.media_size;