1 /* 2 * Copyright (c) 2009 The DragonFly Project. All rights reserved. 3 * 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> 7 * 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 * 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 17 * distribution. 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. 21 * 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 33 * SUCH DAMAGE. 34 * 35 */ 36 /* 37 * Volume operations: 38 * 39 * - volume-add: Add new volume to HAMMER filesystem 40 * - volume-del: Remove volume from HAMMER filesystem 41 * - volume-list: List volumes making up a HAMMER filesystem 42 */ 43 44 #include "hammer.h" 45 #include <string.h> 46 #include <stdlib.h> 47 48 static uint64_t check_volume(const char *vol_name); 49 50 /* 51 * volume-add <device> <filesystem> 52 */ 53 void 54 hammer_cmd_volume_add(char **av, int ac) 55 { 56 struct hammer_ioc_volume ioc; 57 int fd; 58 59 if (ac != 2) { 60 fprintf(stderr, "hammer volume-add <device> <filesystem>\n"); 61 exit(1); 62 } 63 64 char *device = av[0]; 65 char *filesystem = av[1]; 66 67 fd = open(filesystem, O_RDONLY); 68 if (fd < 0) { 69 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n", 70 filesystem, strerror(errno)); 71 exit(1); 72 } 73 74 /* 75 * volume-add ioctl 76 */ 77 bzero(&ioc, sizeof(ioc)); 78 strncpy(ioc.device_name, device, MAXPATHLEN); 79 ioc.vol_size = check_volume(device); 80 ioc.boot_area_size = HAMMER_BOOT_NOMBYTES; 81 ioc.mem_area_size = HAMMER_MEM_NOMBYTES; 82 83 if (ioctl(fd, HAMMERIOC_ADD_VOLUME, &ioc) < 0) { 84 fprintf(stderr, "hammer volume-add ioctl: %s\n", 85 strerror(errno)); 86 exit(1); 87 } 88 89 close(fd); 90 } 91 92 /* 93 * volume-del <device> <filesystem> 94 */ 95 void 96 hammer_cmd_volume_del(char **av, int ac) 97 { 98 struct hammer_ioc_volume ioc; 99 int fd; 100 101 if (ac != 2) { 102 fprintf(stderr, "hammer volume-del <device> <filesystem>\n"); 103 exit(1); 104 } 105 106 107 char *device = av[0]; 108 char *filesystem = av[1]; 109 110 fd = open(filesystem, O_RDONLY); 111 if (fd < 0) { 112 fprintf(stderr, "hammer volume-del: unable to access %s: %s\n", 113 filesystem, strerror(errno)); 114 exit(1); 115 } 116 117 /* 118 * volume-del ioctl 119 */ 120 bzero(&ioc, sizeof(ioc)); 121 strncpy(ioc.device_name, device, MAXPATHLEN); 122 123 if (ioctl(fd, HAMMERIOC_DEL_VOLUME, &ioc) < 0) { 124 fprintf(stderr, "hammer volume-del ioctl: %s\n", 125 strerror(errno)); 126 exit(1); 127 } 128 129 close(fd); 130 } 131 132 /* 133 * volume-list <filesystem> 134 */ 135 void 136 hammer_cmd_volume_list(char **av, int ac) 137 { 138 struct hammer_ioc_volume_list ioc; 139 int fd; 140 141 if (ac != 1) { 142 fprintf(stderr, "hammer volume-list <filesystem>\n"); 143 exit(1); 144 } 145 146 char *filesystem = av[0]; 147 148 fd = open(filesystem, O_RDONLY); 149 if (fd < 0) { 150 fprintf(stderr, 151 "hammer volume-list: unable to access %s: %s\n", 152 filesystem, strerror(errno)); 153 exit(1); 154 } 155 156 /* 157 * volume-list ioctl 158 */ 159 bzero(&ioc, sizeof(ioc)); 160 ioc.vols = malloc(HAMMER_MAX_VOLUMES * 161 sizeof(struct hammer_ioc_volume)); 162 if (ioc.vols == NULL) { 163 fprintf(stderr, 164 "hammer volume-list: unable to allocate memory: %s\n", 165 strerror(errno)); 166 exit(1); 167 } 168 ioc.nvols = HAMMER_MAX_VOLUMES; 169 170 if (ioctl(fd, HAMMERIOC_LIST_VOLUMES, &ioc) < 0) { 171 fprintf(stderr, "hammer volume-list ioctl: %s\n", 172 strerror(errno)); 173 free(ioc.vols); 174 exit(1); 175 } 176 177 int i; 178 for (i = 0; i < ioc.nvols; i++) 179 printf("%s\n", ioc.vols[i].device_name); 180 181 free(ioc.vols); 182 close(fd); 183 } 184 185 /* 186 * Check basic volume characteristics. HAMMER filesystems use a minimum 187 * of a 16KB filesystem buffer size. 188 * 189 * Returns the size of the device. 190 * 191 * From newfs_hammer.c 192 */ 193 static 194 uint64_t 195 check_volume(const char *vol_name) 196 { 197 struct partinfo pinfo; 198 int fd; 199 200 /* 201 * Get basic information about the volume 202 */ 203 fd = open(vol_name, O_RDWR); 204 if (fd < 0) 205 errx(1, "Unable to open %s R+W", vol_name); 206 207 if (ioctl(fd, DIOCGPART, &pinfo) < 0) { 208 errx(1, "No block device: %s", vol_name); 209 } 210 /* 211 * When formatting a block device as a HAMMER volume the 212 * sector size must be compatible. HAMMER uses 16384 byte 213 * filesystem buffers. 214 */ 215 if (pinfo.reserved_blocks) { 216 errx(1, "HAMMER cannot be placed in a partition " 217 "which overlaps the disklabel or MBR"); 218 } 219 if (pinfo.media_blksize > 16384 || 220 16384 % pinfo.media_blksize) { 221 errx(1, "A media sector size of %d is not supported", 222 pinfo.media_blksize); 223 } 224 225 close(fd); 226 return pinfo.media_size; 227 } 228