chfs_mkfs.c revision 1.2
1 /*- 2 * Copyright (c) 2012 Department of Software Engineering, 3 * University of Szeged, Hungary 4 * Copyright (c) 2012 Tamas Toth <ttoth (at) 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 46 #include "makefs.h" 47 #include "chfs_makefs.h" 48 49 #include "media.h" 50 #include "ebh.h" 51 52 #include "chfs/chfs_mkfs.h" 53 54 static uint32_t img_ofs = 0; 55 static uint64_t version = 0; 56 static uint64_t max_serial = 0; 57 static int lebnumber = 0; 58 59 static const unsigned char ffbuf[16] = { 60 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 61 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 62 }; 63 64 static void 65 buf_write(fsinfo_t *fsopts, const void *buf, size_t len) 66 { 67 ssize_t retval; 68 const char *charbuf = buf; 69 70 while (len > 0) { 71 retval = write(fsopts->fd, charbuf, len); 72 73 if (retval == -1) { 74 err(EXIT_FAILURE, "ERROR while writing"); 75 } 76 77 len -= retval; 78 charbuf += retval; 79 img_ofs += retval; 80 } 81 } 82 83 void 84 padblock(fsinfo_t *fsopts) 85 { 86 while (img_ofs % chfs_opts.eraseblock) { 87 buf_write(fsopts, ffbuf, MIN(sizeof(ffbuf), 88 chfs_opts.eraseblock - (img_ofs % chfs_opts.eraseblock))); 89 } 90 } 91 92 static void 93 padword(fsinfo_t *fsopts) 94 { 95 if (img_ofs % 4) { 96 buf_write(fsopts, ffbuf, 4 - img_ofs % 4); 97 } 98 } 99 100 static void 101 pad_block_if_less_than(fsinfo_t *fsopts, int req) 102 { 103 if ((img_ofs % chfs_opts.eraseblock) + req > chfs_opts.eraseblock) { 104 padblock(fsopts); 105 write_eb_header(fsopts); 106 } 107 } 108 109 void 110 write_eb_header(fsinfo_t *fsopts) 111 { 112 chfs_opt_t *opts; 113 struct chfs_eb_hdr ebhdr; 114 char *buf; 115 116 opts = fsopts->fs_specific; 117 118 #define MINSIZE MAX(MAX(CHFS_EB_EC_HDR_SIZE, CHFS_EB_HDR_NOR_SIZE), \ 119 CHFS_EB_HDR_NAND_SIZE) 120 if (opts->pagesize < MINSIZE) 121 errx(EXIT_FAILURE, "pagesize cannot be less than %zu", MINSIZE); 122 if ((buf = malloc(opts->pagesize)) == NULL) 123 err(EXIT_FAILURE, "Memory allocation failed"); 124 125 memset(buf, 0xFF, opts->pagesize); 126 127 ebhdr.ec_hdr.magic = htole32(CHFS_MAGIC_BITMASK); 128 ebhdr.ec_hdr.erase_cnt = htole32(1); 129 ebhdr.ec_hdr.crc_ec = htole32(crc32(0, 130 (uint8_t *)&ebhdr.ec_hdr + 8, 4)); 131 132 memcpy(buf, &ebhdr.ec_hdr, CHFS_EB_EC_HDR_SIZE); 133 134 buf_write(fsopts, buf, opts->pagesize); 135 136 memset(buf, 0xFF, opts->pagesize); 137 138 if (opts->mediatype == TYPE_NAND) { 139 ebhdr.u.nand_hdr.lid = htole32(lebnumber++); 140 ebhdr.u.nand_hdr.serial = htole64(++(max_serial)); 141 ebhdr.u.nand_hdr.crc = htole32(crc32(0, 142 (uint8_t *)&ebhdr.u.nand_hdr + 4, 143 CHFS_EB_HDR_NAND_SIZE - 4)); 144 memcpy(buf, &ebhdr.u.nand_hdr, CHFS_EB_HDR_NAND_SIZE); 145 } else { 146 ebhdr.u.nor_hdr.lid = htole32(lebnumber++); 147 ebhdr.u.nor_hdr.crc = htole32(crc32(0, 148 (uint8_t *)&ebhdr.u.nor_hdr + 4, 149 CHFS_EB_HDR_NOR_SIZE - 4)); 150 memcpy(buf, &ebhdr.u.nor_hdr, CHFS_EB_HDR_NOR_SIZE); 151 } 152 153 buf_write(fsopts, buf, opts->pagesize); 154 free(buf); 155 } 156 157 void 158 write_vnode(fsinfo_t *fsopts, fsnode *node) 159 { 160 struct chfs_flash_vnode fvnode; 161 memset(&fvnode, 0, sizeof(fvnode)); 162 163 fvnode.magic = htole16(CHFS_FS_MAGIC_BITMASK); 164 fvnode.type = htole16(CHFS_NODETYPE_VNODE); 165 fvnode.length = htole32(CHFS_PAD(sizeof(fvnode))); 166 fvnode.hdr_crc = htole32(crc32(0, (uint8_t *)&fvnode, 167 CHFS_NODE_HDR_SIZE - 4)); 168 fvnode.vno = htole64(node->inode->ino); 169 fvnode.version = htole64(version++); 170 fvnode.mode = htole32(node->inode->st.st_mode); 171 fvnode.dn_size = htole32(node->inode->st.st_size); 172 fvnode.atime = htole32(node->inode->st.st_atime); 173 fvnode.ctime = htole32(node->inode->st.st_ctime); 174 fvnode.mtime = htole32(node->inode->st.st_mtime); 175 fvnode.gid = htole32(node->inode->st.st_uid); 176 fvnode.uid = htole32(node->inode->st.st_gid); 177 fvnode.node_crc = htole32(crc32(0, (uint8_t *)&fvnode, 178 sizeof(fvnode) - 4)); 179 180 pad_block_if_less_than(fsopts, sizeof(fvnode)); 181 buf_write(fsopts, &fvnode, sizeof(fvnode)); 182 padword(fsopts); 183 } 184 185 void 186 write_dirent(fsinfo_t *fsopts, fsnode *node) 187 { 188 struct chfs_flash_dirent_node fdirent; 189 char *name = malloc(sizeof(char) * strlen(node->name)); 190 191 if (name == NULL) { 192 err(EXIT_FAILURE, "ERROR memory allocation failed"); 193 } 194 195 memset(&fdirent, 0, sizeof(fdirent)); 196 memcpy(name, node->name, strlen(node->name)); 197 198 fdirent.magic = htole16(CHFS_FS_MAGIC_BITMASK); 199 fdirent.type = htole16(CHFS_NODETYPE_DIRENT); 200 fdirent.length = htole32(CHFS_PAD(sizeof(fdirent) + strlen(name))); 201 fdirent.hdr_crc = htole32(crc32(0, (uint8_t *)&fdirent, 202 CHFS_NODE_HDR_SIZE - 4)); 203 fdirent.vno = htole64(node->inode->ino); 204 if (node->parent != NULL) { 205 fdirent.pvno = htole64(node->parent->inode->ino); 206 } else { 207 fdirent.pvno = htole64(node->inode->ino); 208 } 209 210 fdirent.version = htole64(version++); 211 fdirent.mctime = htole32(node->inode->st.st_mtimensec); 212 fdirent.nsize = htole32(strlen(name)); 213 fdirent.dtype = htole32(IFTOCHT(node->type & S_IFMT)); 214 fdirent.name_crc = htole32(crc32(0, (uint8_t *)name, fdirent.nsize)); 215 fdirent.node_crc = htole32(crc32(0, (uint8_t *)&fdirent, 216 sizeof(fdirent) - 4)); 217 218 pad_block_if_less_than(fsopts, sizeof(fdirent) + fdirent.nsize); 219 buf_write(fsopts, &fdirent, sizeof(fdirent)); 220 buf_write(fsopts, name, fdirent.nsize); 221 padword(fsopts); 222 } 223 224 void 225 write_file(fsinfo_t *fsopts, fsnode *node, const char *dir) 226 { 227 int fd; 228 ssize_t len; 229 char *name = node->name; 230 chfs_opt_t *opts; 231 unsigned char *buf; 232 uint32_t fileofs = 0; 233 234 opts = fsopts->fs_specific; 235 buf = malloc(opts->pagesize); 236 237 if (buf == NULL) 238 goto out; 239 240 if (node->type == S_IFREG || node->type == S_IFSOCK) { 241 char *longname; 242 if (asprintf(&longname, "%s/%s", dir, name) == 1) 243 goto out; 244 245 fd = open(longname, O_RDONLY, 0444); 246 if (fd == -1) 247 err(EXIT_FAILURE, "Cannot open `%s'", longname); 248 249 while ((len = read(fd, buf, opts->pagesize))) { 250 if (len < 0) { 251 warn("ERROR while reading %s", longname); 252 free(longname); 253 free(buf); 254 close(fd); 255 return; 256 } 257 258 write_data(fsopts, node, buf, len, fileofs); 259 fileofs += len; 260 } 261 free(longname); 262 close(fd); 263 } else if (node->type == S_IFLNK) { 264 len = strlen(node->symlink); 265 memcpy(buf, node->symlink, len); 266 write_data(fsopts, node, buf, len, 0); 267 } else if (node->type == S_IFCHR || node->type == S_IFBLK || 268 node->type == S_IFIFO) { 269 len = sizeof(dev_t); 270 memcpy(buf, &(node->inode->st.st_rdev), len); 271 write_data(fsopts, node, buf, len, 0); 272 } 273 274 free(buf); 275 return; 276 out: 277 err(EXIT_FAILURE, "Memory allocation failed"); 278 } 279 280 void 281 write_data(fsinfo_t *fsopts, fsnode *node, unsigned char *buf, size_t len, 282 uint32_t ofs) 283 { 284 struct chfs_flash_data_node fdata; 285 286 memset(&fdata, 0, sizeof(fdata)); 287 if (len == 0) { 288 return; 289 } 290 291 pad_block_if_less_than(fsopts, sizeof(fdata) + len); 292 293 fdata.magic = htole16(CHFS_FS_MAGIC_BITMASK); 294 fdata.type = htole16(CHFS_NODETYPE_DATA); 295 fdata.length = htole32(CHFS_PAD(sizeof(fdata) + len)); 296 fdata.hdr_crc = htole32(crc32(0, (uint8_t *)&fdata, 297 CHFS_NODE_HDR_SIZE - 4)); 298 fdata.vno = htole64(node->inode->ino); 299 fdata.data_length = htole32(len); 300 fdata.offset = htole32(ofs); 301 fdata.data_crc = htole32(crc32(0, (uint8_t *)buf, len)); 302 fdata.node_crc = htole32(crc32(0, 303 (uint8_t *)&fdata, sizeof(fdata) - 4)); 304 305 buf_write(fsopts, &fdata, sizeof(fdata)); 306 buf_write(fsopts, buf, len); 307 padword(fsopts); 308 } 309
Indexes created Wed Sep 24 14:09:57 GMT 2025