chfs_mkfs.c revision 1.7
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 #include <util.h> 46 47 #include "makefs.h" 48 #include "chfs_makefs.h" 49 50 #include "media.h" 51 #include "ebh.h" 52 53 #include "chfs/chfs_mkfs.h" 54 55 static uint32_t img_ofs = 0; 56 static uint64_t version = 0; 57 static uint64_t max_serial = 0; 58 static int lebnumber = 0; 59 60 static const unsigned char ffbuf[16] = { 61 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 62 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 63 }; 64 65 static void 66 buf_write(fsinfo_t *fsopts, const void *buf, size_t len) 67 { 68 ssize_t retval; 69 const char *charbuf = buf; 70 71 while (len > 0) { 72 retval = write(fsopts->fd, charbuf, len); 73 74 if (retval == -1) { 75 err(EXIT_FAILURE, "ERROR while writing"); 76 } 77 78 len -= retval; 79 charbuf += retval; 80 img_ofs += retval; 81 } 82 } 83 84 void 85 padblock(fsinfo_t *fsopts) 86 { 87 chfs_opt_t *chfs_opts = fsopts->fs_specific; 88 while (img_ofs % chfs_opts->eraseblock) { 89 buf_write(fsopts, ffbuf, MIN(sizeof(ffbuf), 90 chfs_opts->eraseblock - (img_ofs % chfs_opts->eraseblock))); 91 } 92 } 93 94 static void 95 padword(fsinfo_t *fsopts) 96 { 97 if (img_ofs % 4) { 98 buf_write(fsopts, ffbuf, 4 - img_ofs % 4); 99 } 100 } 101 102 static void 103 pad_block_if_less_than(fsinfo_t *fsopts, int req) 104 { 105 chfs_opt_t *chfs_opts = fsopts->fs_specific; 106 if ((img_ofs % chfs_opts->eraseblock) + req > 107 (uint32_t)chfs_opts->eraseblock) { 108 padblock(fsopts); 109 write_eb_header(fsopts); 110 } 111 } 112 113 void 114 write_eb_header(fsinfo_t *fsopts) 115 { 116 chfs_opt_t *opts; 117 struct chfs_eb_hdr ebhdr; 118 char *buf; 119 120 opts = fsopts->fs_specific; 121 122 #define MINSIZE MAX(MAX(CHFS_EB_EC_HDR_SIZE, CHFS_EB_HDR_NOR_SIZE), \ 123 CHFS_EB_HDR_NAND_SIZE) 124 if ((uint32_t)opts->pagesize < MINSIZE) 125 errx(EXIT_FAILURE, "pagesize cannot be less than %zu", MINSIZE); 126 buf = emalloc(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 memset(buf + CHFS_EB_EC_HDR_SIZE, 0xFF, 135 opts->pagesize - CHFS_EB_EC_HDR_SIZE); 136 137 buf_write(fsopts, buf, opts->pagesize); 138 139 memset(buf, 0xFF, opts->pagesize); 140 141 if (opts->mediatype == TYPE_NAND) { 142 ebhdr.u.nand_hdr.lid = htole32(lebnumber++); 143 ebhdr.u.nand_hdr.serial = htole64(++(max_serial)); 144 ebhdr.u.nand_hdr.crc = htole32(crc32(0, 145 (uint8_t *)&ebhdr.u.nand_hdr + 4, 146 CHFS_EB_HDR_NAND_SIZE - 4)); 147 memcpy(buf, &ebhdr.u.nand_hdr, CHFS_EB_HDR_NAND_SIZE); 148 } else { 149 ebhdr.u.nor_hdr.lid = htole32(lebnumber++); 150 ebhdr.u.nor_hdr.crc = htole32(crc32(0, 151 (uint8_t *)&ebhdr.u.nor_hdr + 4, 152 CHFS_EB_HDR_NOR_SIZE - 4)); 153 memcpy(buf, &ebhdr.u.nor_hdr, CHFS_EB_HDR_NOR_SIZE); 154 } 155 156 buf_write(fsopts, buf, opts->pagesize); 157 free(buf); 158 } 159 160 void 161 write_vnode(fsinfo_t *fsopts, fsnode *node) 162 { 163 struct chfs_flash_vnode fvnode; 164 memset(&fvnode, 0, sizeof(fvnode)); 165 166 fvnode.magic = htole16(CHFS_FS_MAGIC_BITMASK); 167 fvnode.type = htole16(CHFS_NODETYPE_VNODE); 168 fvnode.length = htole32(CHFS_PAD(sizeof(fvnode))); 169 fvnode.hdr_crc = htole32(crc32(0, (uint8_t *)&fvnode, 170 CHFS_NODE_HDR_SIZE - 4)); 171 fvnode.vno = htole64(node->inode->ino); 172 fvnode.version = htole64(version++); 173 fvnode.mode = htole32(node->inode->st.st_mode); 174 fvnode.dn_size = htole32(node->inode->st.st_size); 175 fvnode.atime = htole32(node->inode->st.st_atime); 176 fvnode.ctime = htole32(node->inode->st.st_ctime); 177 fvnode.mtime = htole32(node->inode->st.st_mtime); 178 fvnode.gid = htole32(node->inode->st.st_uid); 179 fvnode.uid = htole32(node->inode->st.st_gid); 180 fvnode.node_crc = htole32(crc32(0, (uint8_t *)&fvnode, 181 sizeof(fvnode) - 4)); 182 183 pad_block_if_less_than(fsopts, sizeof(fvnode)); 184 buf_write(fsopts, &fvnode, sizeof(fvnode)); 185 padword(fsopts); 186 } 187 188 void 189 write_dirent(fsinfo_t *fsopts, fsnode *node) 190 { 191 struct chfs_flash_dirent_node fdirent; 192 char *name; 193 194 name = emalloc(strlen(node->name)); 195 memcpy(name, node->name, strlen(node->name)); 196 197 memset(&fdirent, 0, sizeof(fdirent)); 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 = 0; 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 = emalloc(opts->pagesize); 236 if (node->type == S_IFREG || node->type == S_IFSOCK) { 237 char *longname; 238 if (asprintf(&longname, "%s/%s", dir, name) == 1) 239 goto out; 240 241 fd = open(longname, O_RDONLY, 0444); 242 if (fd == -1) 243 err(EXIT_FAILURE, "Cannot open `%s'", longname); 244 245 while ((len = read(fd, buf, opts->pagesize))) { 246 if (len < 0) { 247 warn("ERROR while reading %s", longname); 248 free(longname); 249 free(buf); 250 close(fd); 251 return; 252 } 253 254 write_data(fsopts, node, buf, len, fileofs); 255 fileofs += len; 256 } 257 free(longname); 258 close(fd); 259 } else if (node->type == S_IFLNK) { 260 len = strlen(node->symlink); 261 memcpy(buf, node->symlink, len); 262 write_data(fsopts, node, buf, len, 0); 263 } else if (node->type == S_IFCHR || node->type == S_IFBLK || 264 node->type == S_IFIFO) { 265 len = sizeof(dev_t); 266 memcpy(buf, &(node->inode->st.st_rdev), len); 267 write_data(fsopts, node, buf, len, 0); 268 } 269 270 free(buf); 271 return; 272 out: 273 err(EXIT_FAILURE, "Memory allocation failed"); 274 } 275 276 void 277 write_data(fsinfo_t *fsopts, fsnode *node, unsigned char *buf, size_t len, 278 uint32_t ofs) 279 { 280 struct chfs_flash_data_node fdata; 281 282 memset(&fdata, 0, sizeof(fdata)); 283 if (len == 0) { 284 return; 285 } 286 287 pad_block_if_less_than(fsopts, sizeof(fdata) + len); 288 289 fdata.magic = htole16(CHFS_FS_MAGIC_BITMASK); 290 fdata.type = htole16(CHFS_NODETYPE_DATA); 291 fdata.length = htole32(CHFS_PAD(sizeof(fdata) + len)); 292 fdata.hdr_crc = htole32(crc32(0, (uint8_t *)&fdata, 293 CHFS_NODE_HDR_SIZE - 4)); 294 fdata.vno = htole64(node->inode->ino); 295 fdata.data_length = htole32(len); 296 fdata.offset = htole32(ofs); 297 fdata.data_crc = htole32(crc32(0, (uint8_t *)buf, len)); 298 fdata.node_crc = htole32(crc32(0, 299 (uint8_t *)&fdata, sizeof(fdata) - 4)); 300 301 buf_write(fsopts, &fdata, sizeof(fdata)); 302 buf_write(fsopts, buf, len); 303 padword(fsopts); 304 } 305
Indexes created Tue Sep 23 14:10:03 GMT 2025