msdos.c revision 1.10
1 /* $NetBSD: msdos.c,v 1.10 2013/01/28 21:03:27 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 1.10 2013/01/28 21:03:27 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 extern int sectorsize; /* XXX: horrid */ 67 68 static int msdos_populate_dir(const char *, struct denode *, fsnode *, 69 fsnode *, fsinfo_t *); 70 71 void 72 msdos_prep_opts(fsinfo_t *fsopts) 73 { 74 struct msdos_options *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->_name, \ 85 .minimum = _min, \ 86 .maximum = sizeof(_type) == 1 ? 0xff : \ 87 (sizeof(_type) == 2 ? 0xffff : \ 88 (sizeof(_type) == 4 ? 0xffffffff : 0xffffffffffffffffLL)), \ 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; 112 113 int rv; 114 115 assert(option != NULL); 116 assert(fsopts != NULL); 117 assert(msdos_opt != NULL); 118 119 if (debug & DEBUG_FS_PARSE_OPTS) 120 printf("msdos_parse_opts: got `%s'\n", option); 121 122 rv = set_option(msdos_options, option); 123 if (rv == -1) 124 return rv; 125 126 if (strcmp(msdos_options[rv].name, "volume_id") == 0) 127 msdos_opt->volume_id_set = 1; 128 else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0) 129 msdos_opt->media_descriptor_set = 1; 130 else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0) 131 msdos_opt->hidden_sectors_set = 1; 132 return 1; 133 } 134 135 136 void 137 msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 138 { 139 struct msdos_options *msdos_opt = fsopts->fs_specific; 140 struct vnode vp, rootvp; 141 struct timeval start; 142 struct msdosfsmount *pmp; 143 144 assert(image != NULL); 145 assert(dir != NULL); 146 assert(root != NULL); 147 assert(fsopts != NULL); 148 149 /* 150 * XXX: pick up other options from the msdos specific ones? 151 * Is minsize right here? 152 */ 153 msdos_opt->create_size = MAX(msdos_opt->create_size, fsopts->minsize); 154 msdos_opt->bytes_per_sector = sectorsize = 512; 155 156 /* create image */ 157 printf("Creating `%s'\n", image); 158 TIMER_START(start); 159 if (mkfs_msdos(image, NULL, msdos_opt) == -1) 160 return; 161 TIMER_RESULTS(start, "mkfs_msdos"); 162 163 vp.fd = open(image, O_RDWR); 164 vp.fs = msdos_opt; 165 166 if ((pmp = msdosfs_mount(&vp, 0)) == NULL) 167 err(1, "msdosfs_mount"); 168 169 if (msdosfs_root(pmp, &rootvp) != 0) 170 err(1, "msdosfs_root"); 171 172 if (debug & DEBUG_FS_MAKEFS) 173 printf("msdos_makefs: image %s directory %s root %p\n", 174 image, dir, root); 175 176 /* populate image */ 177 printf("Populating `%s'\n", image); 178 TIMER_START(start); 179 if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1) 180 errx(1, "Image file `%s' not created.", image); 181 TIMER_RESULTS(start, "msdos_populate_dir"); 182 183 if (debug & DEBUG_FS_MAKEFS) 184 putchar('\n'); 185 186 /* ensure no outstanding buffers remain */ 187 if (debug & DEBUG_FS_MAKEFS) 188 bcleanup(); 189 190 printf("Image `%s' complete\n", image); 191 } 192 193 static int 194 msdos_populate_dir(const char *path, struct denode *dir, fsnode *root, 195 fsnode *parent, fsinfo_t *fsopts) 196 { 197 fsnode *cur; 198 char pbuf[MAXPATHLEN]; 199 200 assert(dir != NULL); 201 assert(root != NULL); 202 assert(fsopts != NULL); 203 204 for (cur = root->next; cur != NULL; cur = cur->next) { 205 if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path, 206 cur->name) >= sizeof(pbuf)) { 207 warnx("path %s too long", pbuf); 208 return -1; 209 } 210 211 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 212 cur->inode->flags |= FI_ALLOCATED; 213 if (cur != root) { 214 fsopts->curinode++; 215 cur->inode->ino = fsopts->curinode; 216 cur->parent = parent; 217 } 218 } 219 220 if (cur->inode->flags & FI_WRITTEN) { 221 continue; // hard link 222 } 223 cur->inode->flags |= FI_WRITTEN; 224 225 if (cur->child) { 226 struct denode *de; 227 if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) { 228 warn("msdosfs_mkdire %s", pbuf); 229 return -1; 230 } 231 if (msdos_populate_dir(pbuf, de, cur->child, cur, 232 fsopts) == -1) { 233 warn("msdos_populate_dir %s", pbuf); 234 return -1; 235 } 236 continue; 237 } else if (!S_ISREG(cur->type)) { 238 warnx("skipping non-regular file %s/%s", cur->path, 239 cur->name); 240 continue; 241 } 242 if (msdosfs_mkfile(pbuf, dir, cur) == NULL) { 243 warn("msdosfs_mkfile %s", pbuf); 244 return -1; 245 } 246 } 247 return 0; 248 } 249
Indexes created Tue Oct 21 16:10:11 GMT 2025