1 /* $NetBSD: msdos.c,v 1.20 2017/04/14 15:40:35 christos Exp $ */
4 * Copyright (c) 2013 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
31 #if HAVE_NBTOOL_CONFIG_H
32 #include "nbtool_config.h"
35 #include <sys/cdefs.h>
36 #if defined(__RCSID) && !defined(__lint)
37 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
42 #if !HAVE_NBTOOL_CONFIG_H
43 #include <sys/mount.h>
61 #include <mkfs_msdos.h>
62 #include <fs/msdosfs/bpb.h>
66 #include "msdos/msdosfsmount.h"
67 #include "msdos/direntry.h"
68 #include "msdos/denode.h"
70 static int msdos_populate_dir(const char *, struct denode *, fsnode *,
71 fsnode *, fsinfo_t *);
73 struct msdos_options_ex {
74 struct msdos_options options;
78 msdos_prep_opts(fsinfo_t *fsopts)
80 struct msdos_options_ex *msdos_opt = ecalloc(1, sizeof(*msdos_opt));
81 const option_t msdos_options[] = {
82 #define AOPT(_opt, _type, _name, _min, _desc) { \
85 .type = _min == -1 ? OPT_STRPTR : \
86 (_min == -2 ? OPT_BOOL : \
87 (sizeof(_type) == 1 ? OPT_INT8 : \
88 (sizeof(_type) == 2 ? OPT_INT16 : \
89 (sizeof(_type) == 4 ? OPT_INT32 : OPT_INT64)))), \
90 .value = &msdos_opt->options._name, \
92 .maximum = sizeof(_type) == 1 ? UINT8_MAX : \
93 (sizeof(_type) == 2 ? UINT16_MAX : \
94 (sizeof(_type) == 4 ? UINT32_MAX : INT64_MAX)), \
102 fsopts->fs_specific = msdos_opt;
103 fsopts->fs_options = copy_opts(msdos_options);
107 msdos_cleanup_opts(fsinfo_t *fsopts)
109 free(fsopts->fs_specific);
110 free(fsopts->fs_options);
114 msdos_parse_opts(const char *option, fsinfo_t *fsopts)
116 struct msdos_options *msdos_opt = fsopts->fs_specific;
117 option_t *msdos_options = fsopts->fs_options;
120 assert(option != NULL);
121 assert(fsopts != NULL);
122 assert(msdos_opt != NULL);
124 if (debug & DEBUG_FS_PARSE_OPTS)
125 printf("msdos_parse_opts: got `%s'\n", option);
127 rv = set_option(msdos_options, option, NULL, 0);
131 if (strcmp(msdos_options[rv].name, "volume_id") == 0)
132 msdos_opt->volume_id_set = 1;
133 else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0)
134 msdos_opt->media_descriptor_set = 1;
135 else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0)
136 msdos_opt->hidden_sectors_set = 1;
138 if (stampst.st_ino) {
139 msdos_opt->timestamp_set = 1;
140 msdos_opt->timestamp = stampst.st_mtime;
148 msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
150 struct msdos_options_ex *msdos_opt = fsopts->fs_specific;
151 struct vnode vp, rootvp;
152 struct timeval start;
153 struct msdosfsmount *pmp;
156 assert(image != NULL);
158 assert(root != NULL);
159 assert(fsopts != NULL);
161 fsopts->size = fsopts->maxsize;
162 msdos_opt->options.create_size = MAX(msdos_opt->options.create_size,
163 fsopts->offset + fsopts->size);
164 if (fsopts->offset > 0)
165 msdos_opt->options.offset = fsopts->offset;
166 if (msdos_opt->options.bytes_per_sector == 0) {
167 if (fsopts->sectorsize == -1)
168 fsopts->sectorsize = 512;
169 msdos_opt->options.bytes_per_sector = fsopts->sectorsize;
170 } else if (fsopts->sectorsize == -1) {
171 fsopts->sectorsize = msdos_opt->options.bytes_per_sector;
172 } else if (fsopts->sectorsize != msdos_opt->options.bytes_per_sector) {
173 err(1, "inconsistent sectorsize -S %u"
174 "!= -o bytes_per_sector %u",
175 fsopts->sectorsize, msdos_opt->options.bytes_per_sector);
179 printf("Creating `%s'\n", image);
181 if (mkfs_msdos(image, NULL, &msdos_opt->options) == -1)
183 TIMER_RESULTS(start, "mkfs_msdos");
185 fsopts->fd = open(image, O_RDWR);
189 if ((pmp = msdosfs_mount(&vp)) == NULL)
190 err(1, "msdosfs_mount");
192 if (msdosfs_root(pmp, &rootvp) != 0)
193 err(1, "msdosfs_root");
195 if (debug & DEBUG_FS_MAKEFS)
196 printf("msdos_makefs: image %s directory %s root %p\n",
200 printf("Populating `%s'\n", image);
202 if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1)
203 errx(1, "Image file `%s' not created.", image);
204 TIMER_RESULTS(start, "msdos_populate_dir");
206 if (msdosfs_fsiflush(pmp) != 0)
207 errx(1, "Unable to update FSInfo block.");
208 if (debug & DEBUG_FS_MAKEFS)
211 /* ensure no outstanding buffers remain */
212 if (debug & DEBUG_FS_MAKEFS)
215 printf("Image `%s' complete\n", image);
219 msdos_populate_dir(const char *path, struct denode *dir, fsnode *root,
220 fsnode *parent, fsinfo_t *fsopts)
223 char pbuf[MAXPATHLEN];
226 assert(root != NULL);
227 assert(fsopts != NULL);
229 for (cur = root->next; cur != NULL; cur = cur->next) {
230 if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path,
231 cur->name) >= sizeof(pbuf)) {
232 warnx("path %s too long", pbuf);
236 if ((cur->inode->flags & FI_ALLOCATED) == 0) {
237 cur->inode->flags |= FI_ALLOCATED;
240 cur->inode->ino = fsopts->curinode;
241 cur->parent = parent;
245 if (cur->inode->flags & FI_WRITTEN) {
246 continue; // hard link
248 cur->inode->flags |= FI_WRITTEN;
252 if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) {
253 warn("msdosfs_mkdire %s", pbuf);
256 if (msdos_populate_dir(pbuf, de, cur->child, cur,
258 warn("msdos_populate_dir %s", pbuf);
262 } else if (!S_ISREG(cur->type)) {
263 warnx("skipping non-regular file %s/%s", cur->path,
267 if (msdosfs_mkfile(pbuf, dir, cur) == NULL) {
268 warn("msdosfs_mkfile %s", pbuf);