chfs_mkfs.c revision 1.5
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 > 104 (uint32_t)chfs_opts.eraseblock) { 105 padblock(fsopts); 106 write_eb_header(fsopts); 107 } 108 } 109 110 void 111 write_eb_header(fsinfo_t *fsopts) 112 { 113 chfs_opt_t *opts; 114 struct chfs_eb_hdr ebhdr; 115 char *buf; 116 117 opts = fsopts->fs_specific; 118 119 #define MINSIZE MAX(MAX(CHFS_EB_EC_HDR_SIZE, CHFS_EB_HDR_NOR_SIZE), \ 120 CHFS_EB_HDR_NAND_SIZE) 121 if ((uint32_t)opts->pagesize < MINSIZE) 122 errx(EXIT_FAILURE, "pagesize cannot be less than %zu", MINSIZE); 123 if ((buf = malloc(opts->pagesize)) == NULL) 124 err(EXIT_FAILURE, "Memory allocation failed"); 125 126 memset(buf, 0xFF, opts->pagesize); 127 128 ebhdr.ec_hdr.magic = htole32(CHFS_MAGIC_BITMASK); 129 ebhdr.ec_hdr.erase_cnt = htole32(1); 130 ebhdr.ec_hdr.crc_ec = htole32(crc32(0, 131 (uint8_t *)&ebhdr.ec_hdr + 8, 4)); 132 133 memcpy(buf, &ebhdr.ec_hdr, CHFS_EB_EC_HDR_SIZE); 134 135 buf_write(fsopts, buf, opts->pagesize); 136 137 memset(buf, 0xFF, opts->pagesize); 138 139 if (opts->mediatype == TYPE_NAND) { 140 ebhdr.u.nand_hdr.lid = htole32(lebnumber++); 141 ebhdr.u.nand_hdr.serial = htole64(++(max_serial)); 142 ebhdr.u.nand_hdr.crc = htole32(crc32(0, 143 (uint8_t *)&ebhdr.u.nand_hdr + 4, 144 CHFS_EB_HDR_NAND_SIZE - 4)); 145 memcpy(buf, &ebhdr.u.nand_hdr, CHFS_EB_HDR_NAND_SIZE); 146 } else { 147 ebhdr.u.nor_hdr.lid = htole32(lebnumber++); 148 ebhdr.u.nor_hdr.crc = htole32(crc32(0, 149 (uint8_t *)&ebhdr.u.nor_hdr + 4, 150 CHFS_EB_HDR_NOR_SIZE - 4)); 151 memcpy(buf, &ebhdr.u.nor_hdr, CHFS_EB_HDR_NOR_SIZE); 152 } 153 154 buf_write(fsopts, buf, opts->pagesize); 155 free(buf); 156 } 157 158 void 159 write_vnode(fsinfo_t *fsopts, fsnode *node) 160 { 161 struct chfs_flash_vnode fvnode; 162 memset(&fvnode, 0, sizeof(fvnode)); 163 164 fvnode.magic = htole16(CHFS_FS_MAGIC_BITMASK); 165 fvnode.type = htole16(CHFS_NODETYPE_VNODE); 166 fvnode.length = htole32(CHFS_PAD(sizeof(fvnode))); 167 fvnode.hdr_crc = htole32(crc32(0, (uint8_t *)&fvnode, 168 CHFS_NODE_HDR_SIZE - 4)); 169 fvnode.vno = htole64(node->inode->ino); 170 fvnode.version = htole64(version++); 171 fvnode.mode = htole32(node->inode->st.st_mode); 172 fvnode.dn_size = htole32(node->inode->st.st_size); 173 fvnode.atime = htole32(node->inode->st.st_atime); 174 fvnode.ctime = htole32(node->inode->st.st_ctime); 175 fvnode.mtime = htole32(node->inode->st.st_mtime); 176 fvnode.gid = htole32(node->inode->st.st_uid); 177 fvnode.uid = htole32(node->inode->st.st_gid); 178 fvnode.node_crc = htole32(crc32(0, (uint8_t *)&fvnode, 179 sizeof(fvnode) - 4)); 180 181 pad_block_if_less_than(fsopts, sizeof(fvnode)); 182 buf_write(fsopts, &fvnode, sizeof(fvnode)); 183 padword(fsopts); 184 } 185 186 void 187 write_dirent(fsinfo_t *fsopts, fsnode *node) 188 { 189 struct chfs_flash_dirent_node fdirent; 190 char *name = malloc(sizeof(char) * strlen(node->name)); 191 192 if (name == NULL) { 193 err(EXIT_FAILURE, "ERROR memory allocation failed"); 194 } 195 196 memset(&fdirent, 0, sizeof(fdirent)); 197 memcpy(name, node->name, strlen(node->name)); 198 199 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 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 = malloc(opts->pagesize); 237 238 if (buf == NULL) 239 goto out; 240 241 if (node->type == S_IFREG || node->type == S_IFSOCK) { 242 char *longname; 243 if (asprintf(&longname, "%s/%s", dir, name) == 1) 244 goto out; 245 246 fd = open(longname, O_RDONLY, 0444); 247 if (fd == -1) 248 err(EXIT_FAILURE, "Cannot open `%s'", longname); 249 250 while ((len = read(fd, buf, opts->pagesize))) { 251 if (len < 0) { 252 warn("ERROR while reading %s", longname); 253 free(longname); 254 free(buf); 255 close(fd); 256 return; 257 } 258 259 write_data(fsopts, node, buf, len, fileofs); 260 fileofs += len; 261 } 262 free(longname); 263 close(fd); 264 } else if (node->type == S_IFLNK) { 265 len = strlen(node->symlink); 266 memcpy(buf, node->symlink, len); 267 write_data(fsopts, node, buf, len, 0); 268 } else if (node->type == S_IFCHR || node->type == S_IFBLK || 269 node->type == S_IFIFO) { 270 len = sizeof(dev_t); 271 memcpy(buf, &(node->inode->st.st_rdev), len); 272 write_data(fsopts, node, buf, len, 0); 273 } 274 275 free(buf); 276 return; 277 out: 278 err(EXIT_FAILURE, "Memory allocation failed"); 279 } 280 281 void 282 write_data(fsinfo_t *fsopts, fsnode *node, unsigned char *buf, size_t len, 283 uint32_t ofs) 284 { 285 struct chfs_flash_data_node fdata; 286 287 memset(&fdata, 0, sizeof(fdata)); 288 if (len == 0) { 289 return; 290 } 291 292 pad_block_if_less_than(fsopts, sizeof(fdata) + len); 293 294 fdata.magic = htole16(CHFS_FS_MAGIC_BITMASK); 295 fdata.type = htole16(CHFS_NODETYPE_DATA); 296 fdata.length = htole32(CHFS_PAD(sizeof(fdata) + len)); 297 fdata.hdr_crc = htole32(crc32(0, (uint8_t *)&fdata, 298 CHFS_NODE_HDR_SIZE - 4)); 299 fdata.vno = htole64(node->inode->ino); 300 fdata.data_length = htole32(len); 301 fdata.offset = htole32(ofs); 302 fdata.data_crc = htole32(crc32(0, (uint8_t *)buf, len)); 303 fdata.node_crc = htole32(crc32(0, 304 (uint8_t *)&fdata, sizeof(fdata) - 4)); 305 306 buf_write(fsopts, &fdata, sizeof(fdata)); 307 buf_write(fsopts, buf, len); 308 padword(fsopts); 309 } 310
Indexes created Tue Sep 23 22:09:46 GMT 2025