msdos.c revision 1.12
1 /* $NetBSD: msdos.c,v 1.12 2013/01/30 17:29:25 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 * 3. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 #if HAVE_NBTOOL_CONFIG_H 35 #include "nbtool_config.h" 36 #endif 37 38 #include <sys/cdefs.h> 39 #if defined(__RCSID) && !defined(__lint) 40 __RCSID("$NetBSD: msdos.c,v 1.12 2013/01/30 17:29:25 christos Exp $"); 41 #endif /* !__lint */ 42 43 #include <sys/param.h> 44 45 #if !HAVE_NBTOOL_CONFIG_H 46 #include <sys/mount.h> 47 #endif 48 49 #include <assert.h> 50 #include <errno.h> 51 #include <fcntl.h> 52 #include <stdarg.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 #include <dirent.h> 58 #include <util.h> 59 60 #include <ffs/buf.h> 61 #include <fs/msdosfs/denode.h> 62 #include "makefs.h" 63 #include "msdos.h" 64 #include "mkfs_msdos.h" 65 66 static int msdos_populate_dir(const char *, struct denode *, fsnode *, 67 fsnode *, fsinfo_t *); 68 69 void 70 msdos_prep_opts(fsinfo_t *fsopts) 71 { 72 struct msdos_options *msdos_opt = ecalloc(1, sizeof(*msdos_opt)); 73 const option_t msdos_options[] = { 74 #define AOPT(_opt, _type, _name, _min, _desc) { \ 75 .letter = _opt, \ 76 .name = # _name, \ 77 .type = _min == -1 ? OPT_STRPTR : \ 78 (_min == -2 ? OPT_BOOL : \ 79 (sizeof(_type) == 1 ? OPT_INT8 : \ 80 (sizeof(_type) == 2 ? OPT_INT16 : \ 81 (sizeof(_type) == 4 ? OPT_INT32 : OPT_INT64)))), \ 82 .value = &msdos_opt->_name, \ 83 .minimum = _min, \ 84 .maximum = sizeof(_type) == 1 ? 0xff : \ 85 (sizeof(_type) == 2 ? 0xffff : \ 86 (sizeof(_type) == 4 ? 0xffffffff : 0xffffffffffffffffLL)), \ 87 .desc = _desc, \ 88 }, 89 ALLOPTS 90 #undef AOPT 91 { .name = NULL } 92 }; 93 94 fsopts->fs_specific = msdos_opt; 95 fsopts->fs_options = copy_opts(msdos_options); 96 } 97 98 void 99 msdos_cleanup_opts(fsinfo_t *fsopts) 100 { 101 free(fsopts->fs_specific); 102 free(fsopts->fs_options); 103 } 104 105 int 106 msdos_parse_opts(const char *option, fsinfo_t *fsopts) 107 { 108 struct msdos_options *msdos_opt = fsopts->fs_specific; 109 option_t *msdos_options = fsopts->fs_options; 110 111 int rv; 112 113 assert(option != NULL); 114 assert(fsopts != NULL); 115 assert(msdos_opt != NULL); 116 117 if (debug & DEBUG_FS_PARSE_OPTS) 118 printf("msdos_parse_opts: got `%s'\n", option); 119 120 rv = set_option(msdos_options, option, NULL, 0); 121 if (rv == -1) 122 return rv; 123 124 if (strcmp(msdos_options[rv].name, "volume_id") == 0) 125 msdos_opt->volume_id_set = 1; 126 else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0) 127 msdos_opt->media_descriptor_set = 1; 128 else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0) 129 msdos_opt->hidden_sectors_set = 1; 130 return 1; 131 } 132 133 134 void 135 msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 136 { 137 struct msdos_options *msdos_opt = fsopts->fs_specific; 138 struct vnode vp, rootvp; 139 struct timeval start; 140 struct msdosfsmount *pmp; 141 142 assert(image != NULL); 143 assert(dir != NULL); 144 assert(root != NULL); 145 assert(fsopts != NULL); 146 147 /* 148 * XXX: pick up other options from the msdos specific ones? 149 * Is minsize right here? 150 */ 151 msdos_opt->create_size = MAX(msdos_opt->create_size, fsopts->minsize); 152 if (msdos_opt->bytes_per_sector == 0) { 153 if (fsopts->sectorsize == 0) 154 fsopts->sectorsize = 512; 155 msdos_opt->bytes_per_sector = fsopts->sectorsize; 156 } else if (fsopts->sectorsize == 0) { 157 fsopts->sectorsize = msdos_opt->bytes_per_sector; 158 } else if (fsopts->sectorsize != msdos_opt->bytes_per_sector) { 159 err(1, "inconsistent sectorsize -S %u" 160 "!= -o bytes_per_sector %u", 161 fsopts->sectorsize, msdos_opt->bytes_per_sector); 162 } 163 164 /* create image */ 165 printf("Creating `%s'\n", image); 166 TIMER_START(start); 167 if (mkfs_msdos(image, NULL, msdos_opt) == -1) 168 return; 169 TIMER_RESULTS(start, "mkfs_msdos"); 170 171 vp.fd = open(image, O_RDWR); 172 vp.fs = msdos_opt; 173 174 if ((pmp = msdosfs_mount(&vp, 0)) == NULL) 175 err(1, "msdosfs_mount"); 176 177 if (msdosfs_root(pmp, &rootvp) != 0) 178 err(1, "msdosfs_root"); 179 180 if (debug & DEBUG_FS_MAKEFS) 181 printf("msdos_makefs: image %s directory %s root %p\n", 182 image, dir, root); 183 184 /* populate image */ 185 printf("Populating `%s'\n", image); 186 TIMER_START(start); 187 if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1) 188 errx(1, "Image file `%s' not created.", image); 189 TIMER_RESULTS(start, "msdos_populate_dir"); 190 191 if (debug & DEBUG_FS_MAKEFS) 192 putchar('\n'); 193 194 /* ensure no outstanding buffers remain */ 195 if (debug & DEBUG_FS_MAKEFS) 196 bcleanup(); 197 198 printf("Image `%s' complete\n", image); 199 } 200 201 static int 202 msdos_populate_dir(const char *path, struct denode *dir, fsnode *root, 203 fsnode *parent, fsinfo_t *fsopts) 204 { 205 fsnode *cur; 206 char pbuf[MAXPATHLEN]; 207 208 assert(dir != NULL); 209 assert(root != NULL); 210 assert(fsopts != NULL); 211 212 for (cur = root->next; cur != NULL; cur = cur->next) { 213 if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path, 214 cur->name) >= sizeof(pbuf)) { 215 warnx("path %s too long", pbuf); 216 return -1; 217 } 218 219 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 220 cur->inode->flags |= FI_ALLOCATED; 221 if (cur != root) { 222 fsopts->curinode++; 223 cur->inode->ino = fsopts->curinode; 224 cur->parent = parent; 225 } 226 } 227 228 if (cur->inode->flags & FI_WRITTEN) { 229 continue; // hard link 230 } 231 cur->inode->flags |= FI_WRITTEN; 232 233 if (cur->child) { 234 struct denode *de; 235 if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) { 236 warn("msdosfs_mkdire %s", pbuf); 237 return -1; 238 } 239 if (msdos_populate_dir(pbuf, de, cur->child, cur, 240 fsopts) == -1) { 241 warn("msdos_populate_dir %s", pbuf); 242 return -1; 243 } 244 continue; 245 } else if (!S_ISREG(cur->type)) { 246 warnx("skipping non-regular file %s/%s", cur->path, 247 cur->name); 248 continue; 249 } 250 if (msdosfs_mkfile(pbuf, dir, cur) == NULL) { 251 warn("msdosfs_mkfile %s", pbuf); 252 return -1; 253 } 254 } 255 return 0; 256 } 257
Indexes created Tue Oct 21 08:09:48 GMT 2025