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 */ 42 43 #include "hammer.h" 44 #include <string.h> 45 #include <stdlib.h> 46 47 static uint64_t check_volume(const char *vol_name); 48 49 /* 50 * volume-add <device> <filesystem> 51 */ 52 void 53 hammer_cmd_volume_add(char **av, int ac) 54 { 55 struct hammer_ioc_volume ioc; 56 int fd; 57 58 if (ac != 2) { 59 fprintf(stderr, "hammer volume-add <device> <filesystem>\n"); 60 exit(1); 61 } 62 63 char *device = av[0]; 64 char *filesystem = av[1]; 65 66 fd = open(filesystem, O_RDONLY); 67 if (fd < 0) { 68 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n", 69 filesystem, strerror(errno)); 70 exit(1); 71 } 72 73 /* 74 * volume-add ioctl 75 */ 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; 81 82 if (ioctl(fd, HAMMERIOC_ADD_VOLUME, &ioc) < 0) { 83 fprintf(stderr, "hammer volume-add ioctl: %s\n", 84 strerror(errno)); 85 exit(1); 86 } 87 88 close(fd); 89 } 90 91 /* 92 * volume-del <device> <filesystem> 93 */ 94 void 95 hammer_cmd_volume_del(char **av, int ac) 96 { 97 struct hammer_ioc_volume ioc; 98 int fd; 99 100 if (ac != 2) { 101 fprintf(stderr, "hammer volume-del <device> <filesystem>\n"); 102 exit(1); 103 } 104 105 106 char *device = av[0]; 107 char *filesystem = av[1]; 108 109 fd = open(filesystem, O_RDONLY); 110 if (fd < 0) { 111 fprintf(stderr, "hammer volume-add: unable to access %s: %s\n", 112 filesystem, strerror(errno)); 113 exit(1); 114 } 115 116 /* 117 * volume-del ioctl 118 */ 119 bzero(&ioc, sizeof(ioc)); 120 strncpy(ioc.device_name, device, MAXPATHLEN); 121 122 if (ioctl(fd, HAMMERIOC_DEL_VOLUME, &ioc) < 0) { 123 fprintf(stderr, "hammer volume-del ioctl: %s\n", 124 strerror(errno)); 125 exit(1); 126 } 127 128 close(fd); 129 } 130 131 /* 132 * Check basic volume characteristics. HAMMER filesystems use a minimum 133 * of a 16KB filesystem buffer size. 134 * 135 * Returns the size of the device. 136 * 137 * From newfs_hammer.c 138 */ 139 static 140 uint64_t 141 check_volume(const char *vol_name) 142 { 143 struct partinfo pinfo; 144 int fd; 145 146 /* 147 * Get basic information about the volume 148 */ 149 fd = open(vol_name, O_RDWR); 150 if (fd < 0) 151 errx(1, "Unable to open %s R+W", vol_name); 152 153 if (ioctl(fd, DIOCGPART, &pinfo) < 0) { 154 errx(1, "No block device: %s", vol_name); 155 } 156 /* 157 * When formatting a block device as a HAMMER volume the 158 * sector size must be compatible. HAMMER uses 16384 byte 159 * filesystem buffers. 160 */ 161 if (pinfo.reserved_blocks) { 162 errx(1, "HAMMER cannot be placed in a partition " 163 "which overlaps the disklabel or MBR"); 164 } 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); 169 } 170 171 close(fd); 172 return pinfo.media_size; 173 } 174