1 /* $NetBSD: msdos.c,v 1.20 2017/04/14 15:40:35 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #if HAVE_NBTOOL_CONFIG_H 32 #include "nbtool_config.h" 33 #endif 34 35 #include <sys/cdefs.h> 36 #if defined(__RCSID) && !defined(__lint) 37 #endif /* !__lint */ 38 39 #include <sys/param.h> 40 41 #if !HAVE_NBTOOL_CONFIG_H 42 #include <sys/mount.h> 43 #endif 44 45 #include <assert.h> 46 #include <errno.h> 47 #include <fcntl.h> 48 #include <stdarg.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <stdint.h> 53 #include <unistd.h> 54 #include <dirent.h> 55 #include <util.h> 56 57 #include <mkfs_msdos.h> 58 #include <fs/msdosfs/bpb.h> 59 #include "msdos/direntry.h" 60 #include "msdos/denode.h" 61 #include <fs/msdosfs/msdosfsmount.h> 62 63 #undef clrbuf 64 #include "ffs/buf.h" 65 #include "makefs.h" 66 #include "msdos.h" 67 68 static int msdos_populate_dir(const char *, struct denode *, fsnode *, 69 fsnode *, fsinfo_t *); 70 71 struct msdos_options_ex { 72 struct msdos_options options; 73 }; 74 75 void 76 msdos_prep_opts(fsinfo_t *fsopts) 77 { 78 struct msdos_options_ex *msdos_opt = ecalloc(1, sizeof(*msdos_opt)); 79 const option_t msdos_options[] = { 80 #define AOPT(_opt, _type, _name, _min, _desc) { \ 81 .letter = _opt, \ 82 .name = # _name, \ 83 .type = _min == -1 ? OPT_STRPTR : \ 84 (_min == -2 ? OPT_BOOL : \ 85 (sizeof(_type) == 1 ? OPT_INT8 : \ 86 (sizeof(_type) == 2 ? OPT_INT16 : \ 87 (sizeof(_type) == 4 ? OPT_INT32 : OPT_INT64)))), \ 88 .value = &msdos_opt->options._name, \ 89 .minimum = _min, \ 90 .maximum = sizeof(_type) == 1 ? UINT8_MAX : \ 91 (sizeof(_type) == 2 ? UINT16_MAX : \ 92 (sizeof(_type) == 4 ? UINT32_MAX : INT64_MAX)), \ 93 .desc = _desc, \ 94 }, 95 ALLOPTS 96 #undef AOPT 97 { .name = NULL } 98 }; 99 100 fsopts->fs_specific = msdos_opt; 101 fsopts->fs_options = copy_opts(msdos_options); 102 } 103 104 void 105 msdos_cleanup_opts(fsinfo_t *fsopts) 106 { 107 free(fsopts->fs_specific); 108 free(fsopts->fs_options); 109 } 110 111 int 112 msdos_parse_opts(const char *option, fsinfo_t *fsopts) 113 { 114 struct msdos_options *msdos_opt = fsopts->fs_specific; 115 option_t *msdos_options = fsopts->fs_options; 116 int rv; 117 118 assert(option != NULL); 119 assert(fsopts != NULL); 120 assert(msdos_opt != NULL); 121 122 if (debug & DEBUG_FS_PARSE_OPTS) 123 printf("msdos_parse_opts: got `%s'\n", option); 124 125 rv = set_option(msdos_options, option, NULL, 0); 126 if (rv == -1) 127 return rv; 128 129 if (strcmp(msdos_options[rv].name, "volume_id") == 0) 130 msdos_opt->volume_id_set = 1; 131 else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0) 132 msdos_opt->media_descriptor_set = 1; 133 else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0) 134 msdos_opt->hidden_sectors_set = 1; 135 136 if (stampst.st_ino) { 137 msdos_opt->timestamp_set = 1; 138 msdos_opt->timestamp = stampst.st_mtime; 139 } 140 141 return 1; 142 } 143 144 145 void 146 msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 147 { 148 struct msdos_options_ex *msdos_opt = fsopts->fs_specific; 149 struct m_vnode vp, rootvp; 150 struct timeval start; 151 struct msdosfsmount *pmp; 152 153 assert(image != NULL); 154 assert(dir != NULL); 155 assert(root != NULL); 156 assert(fsopts != NULL); 157 158 fsopts->size = fsopts->maxsize; 159 msdos_opt->options.create_size = MAX(msdos_opt->options.create_size, 160 fsopts->offset + fsopts->size); 161 if (fsopts->offset > 0) 162 msdos_opt->options.offset = fsopts->offset; 163 if (msdos_opt->options.bytes_per_sector == 0) { 164 if (fsopts->sectorsize == -1) 165 fsopts->sectorsize = 512; 166 msdos_opt->options.bytes_per_sector = fsopts->sectorsize; 167 } else if (fsopts->sectorsize == -1) { 168 fsopts->sectorsize = msdos_opt->options.bytes_per_sector; 169 } else if (fsopts->sectorsize != msdos_opt->options.bytes_per_sector) { 170 err(1, "inconsistent sectorsize -S %u" 171 "!= -o bytes_per_sector %u", 172 fsopts->sectorsize, msdos_opt->options.bytes_per_sector); 173 } 174 175 /* create image */ 176 printf("Creating `%s'\n", image); 177 TIMER_START(start); 178 if (mkfs_msdos(image, NULL, &msdos_opt->options) == -1) 179 return; 180 TIMER_RESULTS(start, "mkfs_msdos"); 181 182 fsopts->fd = open(image, O_RDWR); 183 vp.fs = fsopts; 184 185 if ((pmp = m_msdosfs_mount(&vp)) == NULL) 186 err(1, "msdosfs_mount"); 187 188 if (msdosfs_root(pmp, &rootvp) != 0) 189 err(1, "msdosfs_root"); 190 191 if (debug & DEBUG_FS_MAKEFS) 192 printf("msdos_makefs: image %s directory %s root %p\n", 193 image, dir, root); 194 195 /* populate image */ 196 printf("Populating `%s'\n", image); 197 TIMER_START(start); 198 if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1) 199 errx(1, "Image file `%s' not created.", image); 200 TIMER_RESULTS(start, "msdos_populate_dir"); 201 202 if (msdosfs_fsiflush(pmp) != 0) 203 errx(1, "Unable to update FSInfo block."); 204 if (debug & DEBUG_FS_MAKEFS) 205 putchar('\n'); 206 207 /* ensure no outstanding buffers remain */ 208 if (debug & DEBUG_FS_MAKEFS) 209 bcleanup(); 210 211 printf("Image `%s' complete\n", image); 212 } 213 214 static int 215 msdos_populate_dir(const char *path, struct denode *dir, fsnode *root, 216 fsnode *parent, fsinfo_t *fsopts) 217 { 218 fsnode *cur; 219 char pbuf[MAXPATHLEN]; 220 221 assert(dir != NULL); 222 assert(root != NULL); 223 assert(fsopts != NULL); 224 225 for (cur = root->next; cur != NULL; cur = cur->next) { 226 if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path, 227 cur->name) >= sizeof(pbuf)) { 228 warnx("path %s too long", pbuf); 229 return -1; 230 } 231 232 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 233 cur->inode->flags |= FI_ALLOCATED; 234 if (cur != root) { 235 fsopts->curinode++; 236 cur->inode->ino = fsopts->curinode; 237 cur->parent = parent; 238 } 239 } 240 241 if (cur->inode->flags & FI_WRITTEN) { 242 continue; // hard link 243 } 244 cur->inode->flags |= FI_WRITTEN; 245 246 if (cur->child) { 247 struct denode *de; 248 if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) { 249 warn("msdosfs_mkdire %s", pbuf); 250 return -1; 251 } 252 if (msdos_populate_dir(pbuf, de, cur->child, cur, 253 fsopts) == -1) { 254 warn("msdos_populate_dir %s", pbuf); 255 return -1; 256 } 257 continue; 258 } else if (!S_ISREG(cur->type)) { 259 warnx("skipping non-regular file %s/%s", cur->path, 260 cur->name); 261 continue; 262 } 263 if (msdosfs_mkfile(cur->contents ? cur->contents : pbuf, dir, 264 cur) == NULL) { 265 warn("msdosfs_mkfile %s", pbuf); 266 return -1; 267 } 268 } 269 return 0; 270 } 271