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 * - volume-blkdevs: List volumes making up a HAMMER filesystem 43 * in blkdevs format 44 */ 45 46 #include "hammer.h" 47 #include <string.h> 48 #include <stdlib.h> 49 50 static uint64_t check_volume(const char *vol_name); 51 52 /* 53 * volume-add <device> <filesystem> 54 */ 55 void 56 hammer_cmd_volume_add(char **av, int ac) 57 { 58 struct hammer_ioc_volume ioc; 59 int fd; 60 61 if (ac != 2) { 62 fprintf(stderr, "hammer volume-add <device> <filesystem>\n"); 63 exit(1); 64 } 65 66 char *device = av[0]; 67 char *filesystem = av[1]; 68 69 fd = open(filesystem, O_RDONLY); 70 if (fd < 0) { 71 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n", 72 filesystem, strerror(errno)); 73 exit(1); 74 } 75 76 /* 77 * volume-add ioctl 78 */ 79 bzero(&ioc, sizeof(ioc)); 80 strncpy(ioc.device_name, device, MAXPATHLEN); 81 ioc.vol_size = check_volume(device); 82 ioc.boot_area_size = HAMMER_BOOT_NOMBYTES; 83 ioc.mem_area_size = HAMMER_MEM_NOMBYTES; 84 85 if (ioctl(fd, HAMMERIOC_ADD_VOLUME, &ioc) < 0) { 86 fprintf(stderr, "hammer volume-add ioctl: %s\n", 87 strerror(errno)); 88 exit(1); 89 } 90 91 close(fd); 92 } 93 94 /* 95 * volume-del <device> <filesystem> 96 */ 97 void 98 hammer_cmd_volume_del(char **av, int ac) 99 { 100 struct hammer_ioc_volume ioc; 101 int fd; 102 103 if (ac != 2) { 104 fprintf(stderr, "hammer volume-del <device> <filesystem>\n"); 105 exit(1); 106 } 107 108 109 char *device = av[0]; 110 char *filesystem = av[1]; 111 112 fd = open(filesystem, O_RDONLY); 113 if (fd < 0) { 114 fprintf(stderr, "hammer volume-del: unable to access %s: %s\n", 115 filesystem, strerror(errno)); 116 exit(1); 117 } 118 119 /* 120 * volume-del ioctl 121 */ 122 bzero(&ioc, sizeof(ioc)); 123 strncpy(ioc.device_name, device, MAXPATHLEN); 124 125 if (ioctl(fd, HAMMERIOC_DEL_VOLUME, &ioc) < 0) { 126 fprintf(stderr, "hammer volume-del ioctl: %s\n", 127 strerror(errno)); 128 exit(1); 129 } 130 131 close(fd); 132 } 133 134 static void 135 hammer_print_volumes(char **av, int ac, const char *cmd, const char sep) 136 { 137 struct hammer_ioc_volume_list ioc; 138 int fd; 139 int i; 140 141 if (ac != 1) { 142 fprintf(stderr, "hammer %s <filesystem>\n", cmd); 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 %s: unable to access %s: %s\n", 152 cmd, filesystem, strerror(errno)); 153 exit(1); 154 } 155 156 bzero(&ioc, sizeof(ioc)); 157 ioc.vols = malloc(HAMMER_MAX_VOLUMES * 158 sizeof(struct hammer_ioc_volume)); 159 if (ioc.vols == NULL) { 160 fprintf(stderr, 161 "hammer %s: unable to allocate memory: %s\n", 162 cmd, strerror(errno)); 163 exit(1); 164 } 165 ioc.nvols = HAMMER_MAX_VOLUMES; 166 167 if (ioctl(fd, HAMMERIOC_LIST_VOLUMES, &ioc) < 0) { 168 fprintf(stderr, "hammer %s ioctl: %s\n", 169 cmd, strerror(errno)); 170 free(ioc.vols); 171 exit(1); 172 } 173 174 for (i = 0; i < ioc.nvols; i++) { 175 printf("%s", ioc.vols[i].device_name); 176 if (i != ioc.nvols - 1) 177 printf("%c", sep); 178 } 179 printf("\n"); 180 181 free(ioc.vols); 182 close(fd); 183 } 184 185 /* 186 * volume-list <filesystem> 187 */ 188 void 189 hammer_cmd_volume_list(char **av, int ac, const char *cmd) 190 { 191 hammer_print_volumes(av, ac, cmd, '\n'); 192 } 193 194 /* 195 * volume-blkdevs <filesystem> 196 */ 197 void 198 hammer_cmd_volume_blkdevs(char **av, int ac, const char *cmd) 199 { 200 hammer_print_volumes(av, ac, cmd, ':'); 201 } 202 203 /* 204 * Check basic volume characteristics. HAMMER filesystems use a minimum 205 * of a 16KB filesystem buffer size. 206 * 207 * Returns the size of the device. 208 * 209 * From newfs_hammer.c 210 */ 211 static 212 uint64_t 213 check_volume(const char *vol_name) 214 { 215 struct partinfo pinfo; 216 int fd; 217 218 /* 219 * Get basic information about the volume 220 */ 221 fd = open(vol_name, O_RDWR); 222 if (fd < 0) 223 errx(1, "Unable to open %s R+W", vol_name); 224 225 if (ioctl(fd, DIOCGPART, &pinfo) < 0) { 226 errx(1, "No block device: %s", vol_name); 227 } 228 /* 229 * When formatting a block device as a HAMMER volume the 230 * sector size must be compatible. HAMMER uses 16384 byte 231 * filesystem buffers. 232 */ 233 if (pinfo.reserved_blocks) { 234 errx(1, "HAMMER cannot be placed in a partition " 235 "which overlaps the disklabel or MBR"); 236 } 237 if (pinfo.media_blksize > 16384 || 238 16384 % pinfo.media_blksize) { 239 errx(1, "A media sector size of %d is not supported", 240 pinfo.media_blksize); 241 } 242 243 close(fd); 244 return pinfo.media_size; 245 } 246