1 /* $NetBSD: msdos.c,v 1.20 2017/04/14 15:40:35 christos Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2013 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Christos Zoulas. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #if HAVE_NBTOOL_CONFIG_H 34 #include "nbtool_config.h" 35 #endif 36 37 #include <sys/param.h> 38 39 #if !HAVE_NBTOOL_CONFIG_H 40 #include <sys/mount.h> 41 #endif 42 43 #include <assert.h> 44 #include <errno.h> 45 #include <fcntl.h> 46 #include <stdarg.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <stdint.h> 51 #include <unistd.h> 52 #include <dirent.h> 53 #include <util.h> 54 55 #include <mkfs_msdos.h> 56 #include <fs/msdosfs/bpb.h> 57 #include "msdos/direntry.h" 58 #include "msdos/denode.h" 59 #include <fs/msdosfs/msdosfsmount.h> 60 61 #undef clrbuf 62 #include "ffs/buf.h" 63 #include "makefs.h" 64 #include "msdos.h" 65 66 static int msdos_populate_dir(const char *, struct denode *, fsnode *, 67 fsnode *, fsinfo_t *); 68 69 struct msdos_options_ex { 70 struct msdos_options options; 71 }; 72 73 void 74 msdos_prep_opts(fsinfo_t *fsopts) 75 { 76 struct msdos_options_ex *msdos_opt = ecalloc(1, sizeof(*msdos_opt)); 77 const option_t msdos_options[] = { 78 #define AOPT(_opt, _type, _name, _min, _desc) { \ 79 .letter = _opt, \ 80 .name = # _name, \ 81 .type = _min == -1 ? OPT_STRPTR : \ 82 (_min == -2 ? OPT_BOOL : \ 83 (sizeof(_type) == 1 ? OPT_INT8 : \ 84 (sizeof(_type) == 2 ? OPT_INT16 : \ 85 (sizeof(_type) == 4 ? OPT_INT32 : OPT_INT64)))), \ 86 .value = &msdos_opt->options._name, \ 87 .minimum = _min, \ 88 .maximum = sizeof(_type) == 1 ? UINT8_MAX : \ 89 (sizeof(_type) == 2 ? UINT16_MAX : \ 90 (sizeof(_type) == 4 ? UINT32_MAX : INT64_MAX)), \ 91 .desc = _desc, \ 92 }, 93 ALLOPTS 94 #undef AOPT 95 { .name = NULL } 96 }; 97 98 fsopts->fs_specific = msdos_opt; 99 fsopts->fs_options = copy_opts(msdos_options); 100 } 101 102 void 103 msdos_cleanup_opts(fsinfo_t *fsopts) 104 { 105 free(fsopts->fs_specific); 106 free(fsopts->fs_options); 107 } 108 109 int 110 msdos_parse_opts(const char *option, fsinfo_t *fsopts) 111 { 112 struct msdos_options *msdos_opt = fsopts->fs_specific; 113 option_t *msdos_options = fsopts->fs_options; 114 int rv; 115 116 assert(option != NULL); 117 assert(fsopts != NULL); 118 assert(msdos_opt != NULL); 119 120 if (debug & DEBUG_FS_PARSE_OPTS) 121 printf("msdos_parse_opts: got `%s'\n", option); 122 123 rv = set_option(msdos_options, option, NULL, 0); 124 if (rv == -1) 125 return rv; 126 127 if (strcmp(msdos_options[rv].name, "volume_id") == 0) 128 msdos_opt->volume_id_set = 1; 129 else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0) 130 msdos_opt->media_descriptor_set = 1; 131 else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0) 132 msdos_opt->hidden_sectors_set = 1; 133 134 if (stampst.st_ino) { 135 msdos_opt->timestamp_set = 1; 136 msdos_opt->timestamp = stampst.st_mtime; 137 } 138 139 return 1; 140 } 141 142 143 void 144 msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 145 { 146 struct msdos_options_ex *msdos_opt = fsopts->fs_specific; 147 struct m_vnode vp, rootvp; 148 struct timeval start; 149 struct msdosfsmount *pmp; 150 151 assert(image != NULL); 152 assert(dir != NULL); 153 assert(root != NULL); 154 assert(fsopts != NULL); 155 156 fsopts->size = fsopts->maxsize; 157 msdos_opt->options.create_size = MAX(msdos_opt->options.create_size, 158 fsopts->offset + fsopts->size); 159 if (fsopts->offset > 0) 160 msdos_opt->options.offset = fsopts->offset; 161 if (msdos_opt->options.bytes_per_sector == 0) { 162 if (fsopts->sectorsize == -1) 163 fsopts->sectorsize = 512; 164 msdos_opt->options.bytes_per_sector = fsopts->sectorsize; 165 } else if (fsopts->sectorsize == -1) { 166 fsopts->sectorsize = msdos_opt->options.bytes_per_sector; 167 } else if (fsopts->sectorsize != msdos_opt->options.bytes_per_sector) { 168 err(1, "inconsistent sectorsize -S %u" 169 "!= -o bytes_per_sector %u", 170 fsopts->sectorsize, msdos_opt->options.bytes_per_sector); 171 } 172 173 /* create image */ 174 printf("Creating `%s'\n", image); 175 TIMER_START(start); 176 if (mkfs_msdos(image, NULL, &msdos_opt->options) == -1) 177 return; 178 TIMER_RESULTS(start, "mkfs_msdos"); 179 180 fsopts->fd = open(image, O_RDWR); 181 vp.fs = fsopts; 182 183 if ((pmp = m_msdosfs_mount(&vp)) == NULL) 184 err(1, "msdosfs_mount"); 185 186 if (msdosfs_root(pmp, &rootvp) != 0) 187 err(1, "msdosfs_root"); 188 189 if (debug & DEBUG_FS_MAKEFS) 190 printf("msdos_makefs: image %s directory %s root %p\n", 191 image, dir, root); 192 193 /* populate image */ 194 printf("Populating `%s'\n", image); 195 TIMER_START(start); 196 if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1) 197 errx(1, "Image file `%s' not created.", image); 198 TIMER_RESULTS(start, "msdos_populate_dir"); 199 200 if (msdosfs_fsiflush(pmp) != 0) 201 errx(1, "Unable to update FSInfo block."); 202 if (debug & DEBUG_FS_MAKEFS) 203 putchar('\n'); 204 205 /* ensure no outstanding buffers remain */ 206 if (debug & DEBUG_FS_MAKEFS) 207 bcleanup(); 208 209 printf("Image `%s' complete\n", image); 210 } 211 212 static int 213 msdos_populate_dir(const char *path, struct denode *dir, fsnode *root, 214 fsnode *parent, fsinfo_t *fsopts) 215 { 216 fsnode *cur; 217 char pbuf[MAXPATHLEN]; 218 219 assert(dir != NULL); 220 assert(root != NULL); 221 assert(fsopts != NULL); 222 223 for (cur = root->next; cur != NULL; cur = cur->next) { 224 if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path, 225 cur->name) >= sizeof(pbuf)) { 226 warnx("path %s too long", pbuf); 227 return -1; 228 } 229 230 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 231 cur->inode->flags |= FI_ALLOCATED; 232 if (cur != root) { 233 fsopts->curinode++; 234 cur->inode->ino = fsopts->curinode; 235 cur->parent = parent; 236 } 237 } 238 239 if (cur->inode->flags & FI_WRITTEN) { 240 continue; // hard link 241 } 242 cur->inode->flags |= FI_WRITTEN; 243 244 if (cur->child) { 245 struct denode *de; 246 if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) { 247 warn("msdosfs_mkdire %s", pbuf); 248 return -1; 249 } 250 if (msdos_populate_dir(pbuf, de, cur->child, cur, 251 fsopts) == -1) { 252 warn("msdos_populate_dir %s", pbuf); 253 return -1; 254 } 255 continue; 256 } else if (!S_ISREG(cur->type)) { 257 warnx("skipping non-regular file %s/%s", cur->path, 258 cur->name); 259 continue; 260 } 261 if (msdosfs_mkfile(cur->contents ? cur->contents : pbuf, dir, 262 cur) == NULL) { 263 warn("msdosfs_mkfile %s", pbuf); 264 return -1; 265 } 266 } 267 return 0; 268 } 269