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/param.h> 36 37 #if !HAVE_NBTOOL_CONFIG_H 38 #include <sys/mount.h> 39 #endif 40 41 #include <assert.h> 42 #include <errno.h> 43 #include <fcntl.h> 44 #include <stdarg.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <stdint.h> 49 #include <unistd.h> 50 #include <dirent.h> 51 #include <util.h> 52 53 #include <mkfs_msdos.h> 54 #include <fs/msdosfs/bpb.h> 55 #include "msdos/direntry.h" 56 #include "msdos/denode.h" 57 #include <fs/msdosfs/msdosfsmount.h> 58 59 #undef clrbuf 60 #include "ffs/buf.h" 61 #include "makefs.h" 62 #include "msdos.h" 63 64 static int msdos_populate_dir(const char *, struct denode *, fsnode *, 65 fsnode *, fsinfo_t *); 66 67 struct msdos_options_ex { 68 struct msdos_options options; 69 }; 70 71 void 72 msdos_prep_opts(fsinfo_t *fsopts) 73 { 74 struct msdos_options_ex *msdos_opt = ecalloc(1, sizeof(*msdos_opt)); 75 const option_t msdos_options[] = { 76 #define AOPT(_opt, _type, _name, _min, _desc) { \ 77 .letter = _opt, \ 78 .name = # _name, \ 79 .type = _min == -1 ? OPT_STRPTR : \ 80 (_min == -2 ? OPT_BOOL : \ 81 (sizeof(_type) == 1 ? OPT_INT8 : \ 82 (sizeof(_type) == 2 ? OPT_INT16 : \ 83 (sizeof(_type) == 4 ? OPT_INT32 : OPT_INT64)))), \ 84 .value = &msdos_opt->options._name, \ 85 .minimum = _min, \ 86 .maximum = sizeof(_type) == 1 ? UINT8_MAX : \ 87 (sizeof(_type) == 2 ? UINT16_MAX : \ 88 (sizeof(_type) == 4 ? UINT32_MAX : INT64_MAX)), \ 89 .desc = _desc, \ 90 }, 91 ALLOPTS 92 #undef AOPT 93 { .name = NULL } 94 }; 95 96 fsopts->fs_specific = msdos_opt; 97 fsopts->fs_options = copy_opts(msdos_options); 98 } 99 100 void 101 msdos_cleanup_opts(fsinfo_t *fsopts) 102 { 103 free(fsopts->fs_specific); 104 free(fsopts->fs_options); 105 } 106 107 int 108 msdos_parse_opts(const char *option, fsinfo_t *fsopts) 109 { 110 struct msdos_options *msdos_opt = fsopts->fs_specific; 111 option_t *msdos_options = fsopts->fs_options; 112 int rv; 113 114 assert(option != NULL); 115 assert(fsopts != NULL); 116 assert(msdos_opt != NULL); 117 118 if (debug & DEBUG_FS_PARSE_OPTS) 119 printf("msdos_parse_opts: got `%s'\n", option); 120 121 rv = set_option(msdos_options, option, NULL, 0); 122 if (rv == -1) 123 return rv; 124 125 if (strcmp(msdos_options[rv].name, "volume_id") == 0) 126 msdos_opt->volume_id_set = 1; 127 else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0) 128 msdos_opt->media_descriptor_set = 1; 129 else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0) 130 msdos_opt->hidden_sectors_set = 1; 131 132 if (stampst.st_ino) { 133 msdos_opt->timestamp_set = 1; 134 msdos_opt->timestamp = stampst.st_mtime; 135 } 136 137 return 1; 138 } 139 140 141 void 142 msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 143 { 144 struct msdos_options_ex *msdos_opt = fsopts->fs_specific; 145 struct m_vnode vp, rootvp; 146 struct timeval start; 147 struct msdosfsmount *pmp; 148 149 assert(image != NULL); 150 assert(dir != NULL); 151 assert(root != NULL); 152 assert(fsopts != NULL); 153 154 fsopts->size = fsopts->maxsize; 155 msdos_opt->options.create_size = MAX(msdos_opt->options.create_size, 156 fsopts->offset + fsopts->size); 157 if (fsopts->offset > 0) 158 msdos_opt->options.offset = fsopts->offset; 159 if (msdos_opt->options.bytes_per_sector == 0) { 160 if (fsopts->sectorsize == -1) 161 fsopts->sectorsize = 512; 162 msdos_opt->options.bytes_per_sector = fsopts->sectorsize; 163 } else if (fsopts->sectorsize == -1) { 164 fsopts->sectorsize = msdos_opt->options.bytes_per_sector; 165 } else if (fsopts->sectorsize != msdos_opt->options.bytes_per_sector) { 166 err(1, "inconsistent sectorsize -S %u" 167 "!= -o bytes_per_sector %u", 168 fsopts->sectorsize, msdos_opt->options.bytes_per_sector); 169 } 170 171 /* create image */ 172 printf("Creating `%s'\n", image); 173 TIMER_START(start); 174 if (mkfs_msdos(image, NULL, &msdos_opt->options) == -1) 175 return; 176 TIMER_RESULTS(start, "mkfs_msdos"); 177 178 fsopts->fd = open(image, O_RDWR); 179 vp.fs = fsopts; 180 181 if ((pmp = m_msdosfs_mount(&vp)) == NULL) 182 err(1, "msdosfs_mount"); 183 184 if (msdosfs_root(pmp, &rootvp) != 0) 185 err(1, "msdosfs_root"); 186 187 if (debug & DEBUG_FS_MAKEFS) 188 printf("msdos_makefs: image %s directory %s root %p\n", 189 image, dir, root); 190 191 /* populate image */ 192 printf("Populating `%s'\n", image); 193 TIMER_START(start); 194 if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1) 195 errx(1, "Image file `%s' not created.", image); 196 TIMER_RESULTS(start, "msdos_populate_dir"); 197 198 if (msdosfs_fsiflush(pmp) != 0) 199 errx(1, "Unable to update FSInfo block."); 200 if (debug & DEBUG_FS_MAKEFS) 201 putchar('\n'); 202 203 /* ensure no outstanding buffers remain */ 204 if (debug & DEBUG_FS_MAKEFS) 205 bcleanup(); 206 207 printf("Image `%s' complete\n", image); 208 } 209 210 static int 211 msdos_populate_dir(const char *path, struct denode *dir, fsnode *root, 212 fsnode *parent, fsinfo_t *fsopts) 213 { 214 fsnode *cur; 215 char pbuf[MAXPATHLEN]; 216 217 assert(dir != NULL); 218 assert(root != NULL); 219 assert(fsopts != NULL); 220 221 for (cur = root->next; cur != NULL; cur = cur->next) { 222 if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path, 223 cur->name) >= sizeof(pbuf)) { 224 warnx("path %s too long", pbuf); 225 return -1; 226 } 227 228 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 229 cur->inode->flags |= FI_ALLOCATED; 230 if (cur != root) { 231 fsopts->curinode++; 232 cur->inode->ino = fsopts->curinode; 233 cur->parent = parent; 234 } 235 } 236 237 if (cur->inode->flags & FI_WRITTEN) { 238 continue; // hard link 239 } 240 cur->inode->flags |= FI_WRITTEN; 241 242 if (cur->child) { 243 struct denode *de; 244 if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) { 245 warn("msdosfs_mkdire %s", pbuf); 246 return -1; 247 } 248 if (msdos_populate_dir(pbuf, de, cur->child, cur, 249 fsopts) == -1) { 250 warn("msdos_populate_dir %s", pbuf); 251 return -1; 252 } 253 continue; 254 } else if (!S_ISREG(cur->type)) { 255 warnx("skipping non-regular file %s/%s", cur->path, 256 cur->name); 257 continue; 258 } 259 if (msdosfs_mkfile(cur->contents ? cur->contents : pbuf, dir, 260 cur) == NULL) { 261 warn("msdosfs_mkfile %s", pbuf); 262 return -1; 263 } 264 } 265 return 0; 266 } 267