1 /*-
2 * Copyright (c) 2012 Department of Software Engineering,
3 * University of Szeged, Hungary
4 * Copyright (c) 2012 Tamas Toth <ttoth@inf.u-szeged.hu>
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by the Department of Software Engineering, University of Szeged, Hungary
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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #if HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35
36 #include <sys/param.h>
37 #include <sys/stat.h>
38
39 #include <assert.h>
40 #include <fcntl.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <zlib.h>
45 #include <util.h>
46 #include <unistd.h>
47
48 #include "makefs.h"
49 #include "chfs_makefs.h"
50
51 #include "media.h"
52 #include "ebh.h"
53
54 #include "chfs/chfs_mkfs.h"
55
56 static uint32_t img_ofs = 0;
57 static uint64_t version = 0;
58 static uint64_t max_serial = 0;
59 static int lebnumber = 0;
60
61 static const unsigned char ffbuf[16] = {
62 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
63 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
64 };
65
66 static void
buf_write(fsinfo_t * fsopts,const void * buf,size_t len)67 buf_write(fsinfo_t *fsopts, const void *buf, size_t len)
68 {
69 ssize_t retval;
70 const char *charbuf = buf;
71
72 while (len > 0) {
73 retval = write(fsopts->fd, charbuf, len);
74
75 if (retval == -1) {
76 err(EXIT_FAILURE, "ERROR while writing");
77 }
78
79 len -= retval;
80 charbuf += retval;
81 img_ofs += retval;
82 }
83 }
84
85 void
padblock(fsinfo_t * fsopts)86 padblock(fsinfo_t *fsopts)
87 {
88 chfs_opt_t *chfs_opts = fsopts->fs_specific;
89 while (img_ofs % chfs_opts->eraseblock) {
90 buf_write(fsopts, ffbuf, MIN(sizeof(ffbuf),
91 chfs_opts->eraseblock - (img_ofs % chfs_opts->eraseblock)));
92 }
93 }
94
95 static void
padword(fsinfo_t * fsopts)96 padword(fsinfo_t *fsopts)
97 {
98 if (img_ofs % 4) {
99 buf_write(fsopts, ffbuf, 4 - img_ofs % 4);
100 }
101 }
102
103 static void
pad_block_if_less_than(fsinfo_t * fsopts,int req)104 pad_block_if_less_than(fsinfo_t *fsopts, int req)
105 {
106 chfs_opt_t *chfs_opts = fsopts->fs_specific;
107 if ((img_ofs % chfs_opts->eraseblock) + req >
108 (uint32_t)chfs_opts->eraseblock) {
109 padblock(fsopts);
110 write_eb_header(fsopts);
111 }
112 }
113
114 void
write_eb_header(fsinfo_t * fsopts)115 write_eb_header(fsinfo_t *fsopts)
116 {
117 chfs_opt_t *opts;
118 struct chfs_eb_hdr ebhdr;
119 char *buf;
120
121 opts = fsopts->fs_specific;
122
123 #define MINSIZE MAX(MAX(CHFS_EB_EC_HDR_SIZE, CHFS_EB_HDR_NOR_SIZE), \
124 CHFS_EB_HDR_NAND_SIZE)
125 if ((uint32_t)opts->pagesize < MINSIZE)
126 errx(EXIT_FAILURE, "pagesize cannot be less than %zu", MINSIZE);
127 buf = emalloc(opts->pagesize);
128
129 ebhdr.ec_hdr.magic = htole32(CHFS_MAGIC_BITMASK);
130 ebhdr.ec_hdr.erase_cnt = htole32(1);
131 ebhdr.ec_hdr.crc_ec = htole32(crc32(0,
132 (uint8_t *)&ebhdr.ec_hdr + 8, 4));
133
134 memcpy(buf, &ebhdr.ec_hdr, CHFS_EB_EC_HDR_SIZE);
135 memset(buf + CHFS_EB_EC_HDR_SIZE, 0xFF,
136 opts->pagesize - CHFS_EB_EC_HDR_SIZE);
137
138 buf_write(fsopts, buf, opts->pagesize);
139
140 memset(buf, 0xFF, opts->pagesize);
141
142 if (opts->mediatype == TYPE_NAND) {
143 ebhdr.u.nand_hdr.lid = htole32(lebnumber++);
144 ebhdr.u.nand_hdr.serial = htole64(++(max_serial));
145 ebhdr.u.nand_hdr.crc = htole32(crc32(0,
146 (uint8_t *)&ebhdr.u.nand_hdr + 4,
147 CHFS_EB_HDR_NAND_SIZE - 4));
148 memcpy(buf, &ebhdr.u.nand_hdr, CHFS_EB_HDR_NAND_SIZE);
149 } else {
150 ebhdr.u.nor_hdr.lid = htole32(lebnumber++);
151 ebhdr.u.nor_hdr.crc = htole32(crc32(0,
152 (uint8_t *)&ebhdr.u.nor_hdr + 4,
153 CHFS_EB_HDR_NOR_SIZE - 4));
154 memcpy(buf, &ebhdr.u.nor_hdr, CHFS_EB_HDR_NOR_SIZE);
155 }
156
157 buf_write(fsopts, buf, opts->pagesize);
158 free(buf);
159 }
160
161 void
write_vnode(fsinfo_t * fsopts,fsnode * node)162 write_vnode(fsinfo_t *fsopts, fsnode *node)
163 {
164 struct chfs_flash_vnode fvnode;
165 memset(&fvnode, 0, sizeof(fvnode));
166
167 fvnode.magic = htole16(CHFS_FS_MAGIC_BITMASK);
168 fvnode.type = htole16(CHFS_NODETYPE_VNODE);
169 fvnode.length = htole32(CHFS_PAD(sizeof(fvnode)));
170 fvnode.hdr_crc = htole32(crc32(0, (uint8_t *)&fvnode,
171 CHFS_NODE_HDR_SIZE - 4));
172 fvnode.vno = htole64(node->inode->ino);
173 fvnode.version = htole64(version++);
174 fvnode.mode = htole32(node->inode->st.st_mode);
175 fvnode.dn_size = htole32(node->inode->st.st_size);
176 fvnode.atime = htole32(node->inode->st.st_atime);
177 fvnode.ctime = htole32(node->inode->st.st_ctime);
178 fvnode.mtime = htole32(node->inode->st.st_mtime);
179 fvnode.gid = htole32(node->inode->st.st_uid);
180 fvnode.uid = htole32(node->inode->st.st_gid);
181 fvnode.node_crc = htole32(crc32(0, (uint8_t *)&fvnode,
182 sizeof(fvnode) - 4));
183
184 pad_block_if_less_than(fsopts, sizeof(fvnode));
185 buf_write(fsopts, &fvnode, sizeof(fvnode));
186 padword(fsopts);
187 }
188
189 void
write_dirent(fsinfo_t * fsopts,fsnode * node)190 write_dirent(fsinfo_t *fsopts, fsnode *node)
191 {
192 struct chfs_flash_dirent_node fdirent;
193 char *name;
194
195 name = emalloc(strlen(node->name));
196 memcpy(name, node->name, strlen(node->name));
197
198 memset(&fdirent, 0, sizeof(fdirent));
199 fdirent.magic = htole16(CHFS_FS_MAGIC_BITMASK);
200 fdirent.type = htole16(CHFS_NODETYPE_DIRENT);
201 fdirent.length = htole32(CHFS_PAD(sizeof(fdirent) + strlen(name)));
202 fdirent.hdr_crc = htole32(crc32(0, (uint8_t *)&fdirent,
203 CHFS_NODE_HDR_SIZE - 4));
204 fdirent.vno = htole64(node->inode->ino);
205 if (node->parent != NULL) {
206 fdirent.pvno = htole64(node->parent->inode->ino);
207 } else {
208 fdirent.pvno = htole64(node->inode->ino);
209 }
210
211 fdirent.version = htole64(version++);
212 fdirent.mctime = 0;
213 fdirent.nsize = htole32(strlen(name));
214 fdirent.dtype = htole32(IFTOCHT(node->type & S_IFMT));
215 fdirent.name_crc = htole32(crc32(0, (uint8_t *)name, fdirent.nsize));
216 fdirent.node_crc = htole32(crc32(0, (uint8_t *)&fdirent,
217 sizeof(fdirent) - 4));
218
219 pad_block_if_less_than(fsopts, sizeof(fdirent) + fdirent.nsize);
220 buf_write(fsopts, &fdirent, sizeof(fdirent));
221 buf_write(fsopts, name, fdirent.nsize);
222 padword(fsopts);
223 }
224
225 void
write_file(fsinfo_t * fsopts,fsnode * node,const char * dir)226 write_file(fsinfo_t *fsopts, fsnode *node, const char *dir)
227 {
228 int fd;
229 ssize_t len;
230 char *name = node->name;
231 chfs_opt_t *opts;
232 unsigned char *buf;
233 uint32_t fileofs = 0;
234
235 opts = fsopts->fs_specific;
236 buf = emalloc(opts->pagesize);
237 if (node->type == S_IFREG || node->type == S_IFSOCK) {
238 char *longname;
239 if (asprintf(&longname, "%s/%s", dir, name) == 1)
240 goto out;
241
242 fd = open(longname, O_RDONLY, 0444);
243 if (fd == -1)
244 err(EXIT_FAILURE, "Cannot open `%s'", longname);
245
246 while ((len = read(fd, buf, opts->pagesize))) {
247 if (len < 0) {
248 warn("ERROR while reading %s", longname);
249 free(longname);
250 free(buf);
251 close(fd);
252 return;
253 }
254
255 write_data(fsopts, node, buf, len, fileofs);
256 fileofs += len;
257 }
258 free(longname);
259 close(fd);
260 } else if (node->type == S_IFLNK) {
261 len = strlen(node->symlink);
262 memcpy(buf, node->symlink, len);
263 write_data(fsopts, node, buf, len, 0);
264 } else if (node->type == S_IFCHR || node->type == S_IFBLK ||
265 node->type == S_IFIFO) {
266 len = sizeof(dev_t);
267 memcpy(buf, &(node->inode->st.st_rdev), len);
268 write_data(fsopts, node, buf, len, 0);
269 }
270
271 free(buf);
272 return;
273 out:
274 err(EXIT_FAILURE, "Memory allocation failed");
275 }
276
277 void
write_data(fsinfo_t * fsopts,fsnode * node,unsigned char * buf,size_t len,uint32_t ofs)278 write_data(fsinfo_t *fsopts, fsnode *node, unsigned char *buf, size_t len,
279 uint32_t ofs)
280 {
281 struct chfs_flash_data_node fdata;
282
283 memset(&fdata, 0, sizeof(fdata));
284 if (len == 0) {
285 return;
286 }
287
288 pad_block_if_less_than(fsopts, sizeof(fdata) + len);
289
290 fdata.magic = htole16(CHFS_FS_MAGIC_BITMASK);
291 fdata.type = htole16(CHFS_NODETYPE_DATA);
292 fdata.length = htole32(CHFS_PAD(sizeof(fdata) + len));
293 fdata.hdr_crc = htole32(crc32(0, (uint8_t *)&fdata,
294 CHFS_NODE_HDR_SIZE - 4));
295 fdata.vno = htole64(node->inode->ino);
296 fdata.data_length = htole32(len);
297 fdata.offset = htole32(ofs);
298 fdata.data_crc = htole32(crc32(0, (uint8_t *)buf, len));
299 fdata.node_crc = htole32(crc32(0,
300 (uint8_t *)&fdata, sizeof(fdata) - 4));
301
302 buf_write(fsopts, &fdata, sizeof(fdata));
303 buf_write(fsopts, buf, len);
304 padword(fsopts);
305 }
306