chfs_mkfs.c revision 1.5.2.3
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 memset(buf, 0xFF, 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); 135 136 buf_write(fsopts, buf, opts->pagesize); 137 138 memset(buf, 0xFF, opts->pagesize); 139 140 if (opts->mediatype == TYPE_NAND) { 141 ebhdr.u.nand_hdr.lid = htole32(lebnumber++); 142 ebhdr.u.nand_hdr.serial = htole64(++(max_serial)); 143 ebhdr.u.nand_hdr.crc = htole32(crc32(0, 144 (uint8_t *)&ebhdr.u.nand_hdr + 4, 145 CHFS_EB_HDR_NAND_SIZE - 4)); 146 memcpy(buf, &ebhdr.u.nand_hdr, CHFS_EB_HDR_NAND_SIZE); 147 } else { 148 ebhdr.u.nor_hdr.lid = htole32(lebnumber++); 149 ebhdr.u.nor_hdr.crc = htole32(crc32(0, 150 (uint8_t *)&ebhdr.u.nor_hdr + 4, 151 CHFS_EB_HDR_NOR_SIZE - 4)); 152 memcpy(buf, &ebhdr.u.nor_hdr, CHFS_EB_HDR_NOR_SIZE); 153 } 154 155 buf_write(fsopts, buf, opts->pagesize); 156 free(buf); 157 } 158 159 void 160 write_vnode(fsinfo_t *fsopts, fsnode *node) 161 { 162 struct chfs_flash_vnode fvnode; 163 memset(&fvnode, 0, sizeof(fvnode)); 164 165 fvnode.magic = htole16(CHFS_FS_MAGIC_BITMASK); 166 fvnode.type = htole16(CHFS_NODETYPE_VNODE); 167 fvnode.length = htole32(CHFS_PAD(sizeof(fvnode))); 168 fvnode.hdr_crc = htole32(crc32(0, (uint8_t *)&fvnode, 169 CHFS_NODE_HDR_SIZE - 4)); 170 fvnode.vno = htole64(node->inode->ino); 171 fvnode.version = htole64(version++); 172 fvnode.mode = htole32(node->inode->st.st_mode); 173 fvnode.dn_size = htole32(node->inode->st.st_size); 174 fvnode.atime = htole32(node->inode->st.st_atime); 175 fvnode.ctime = htole32(node->inode->st.st_ctime); 176 fvnode.mtime = htole32(node->inode->st.st_mtime); 177 fvnode.gid = htole32(node->inode->st.st_uid); 178 fvnode.uid = htole32(node->inode->st.st_gid); 179 fvnode.node_crc = htole32(crc32(0, (uint8_t *)&fvnode, 180 sizeof(fvnode) - 4)); 181 182 pad_block_if_less_than(fsopts, sizeof(fvnode)); 183 buf_write(fsopts, &fvnode, sizeof(fvnode)); 184 padword(fsopts); 185 } 186 187 void 188 write_dirent(fsinfo_t *fsopts, fsnode *node) 189 { 190 struct chfs_flash_dirent_node fdirent; 191 char *name; 192 193 name = emalloc(strlen(node->name)); 194 memcpy(name, node->name, strlen(node->name)); 195 196 memset(&fdirent, 0, sizeof(fdirent)); 197 fdirent.magic = htole16(CHFS_FS_MAGIC_BITMASK); 198 fdirent.type = htole16(CHFS_NODETYPE_DIRENT); 199 fdirent.length = htole32(CHFS_PAD(sizeof(fdirent) + strlen(name))); 200 fdirent.hdr_crc = htole32(crc32(0, (uint8_t *)&fdirent, 201 CHFS_NODE_HDR_SIZE - 4)); 202 fdirent.vno = htole64(node->inode->ino); 203 if (node->parent != NULL) { 204 fdirent.pvno = htole64(node->parent->inode->ino); 205 } else { 206 fdirent.pvno = htole64(node->inode->ino); 207 } 208 209 fdirent.version = htole64(version++); 210 fdirent.mctime = 0; 211 fdirent.nsize = htole32(strlen(name)); 212 fdirent.dtype = htole32(IFTOCHT(node->type & S_IFMT)); 213 fdirent.name_crc = htole32(crc32(0, (uint8_t *)name, fdirent.nsize)); 214 fdirent.node_crc = htole32(crc32(0, (uint8_t *)&fdirent, 215 sizeof(fdirent) - 4)); 216 217 pad_block_if_less_than(fsopts, sizeof(fdirent) + fdirent.nsize); 218 buf_write(fsopts, &fdirent, sizeof(fdirent)); 219 buf_write(fsopts, name, fdirent.nsize); 220 padword(fsopts); 221 } 222 223 void 224 write_file(fsinfo_t *fsopts, fsnode *node, const char *dir) 225 { 226 int fd; 227 ssize_t len; 228 char *name = node->name; 229 chfs_opt_t *opts; 230 unsigned char *buf; 231 uint32_t fileofs = 0; 232 233 opts = fsopts->fs_specific; 234 buf = emalloc(opts->pagesize); 235 if (node->type == S_IFREG || node->type == S_IFSOCK) { 236 char *longname; 237 if (asprintf(&longname, "%s/%s", dir, name) == 1) 238 goto out; 239 240 fd = open(longname, O_RDONLY, 0444); 241 if (fd == -1) 242 err(EXIT_FAILURE, "Cannot open `%s'", longname); 243 244 while ((len = read(fd, buf, opts->pagesize))) { 245 if (len < 0) { 246 warn("ERROR while reading %s", longname); 247 free(longname); 248 free(buf); 249 close(fd); 250 return; 251 } 252 253 write_data(fsopts, node, buf, len, fileofs); 254 fileofs += len; 255 } 256 free(longname); 257 close(fd); 258 } else if (node->type == S_IFLNK) { 259 len = strlen(node->symlink); 260 memcpy(buf, node->symlink, len); 261 write_data(fsopts, node, buf, len, 0); 262 } else if (node->type == S_IFCHR || node->type == S_IFBLK || 263 node->type == S_IFIFO) { 264 len = sizeof(dev_t); 265 memcpy(buf, &(node->inode->st.st_rdev), len); 266 write_data(fsopts, node, buf, len, 0); 267 } 268 269 free(buf); 270 return; 271 out: 272 err(EXIT_FAILURE, "Memory allocation failed"); 273 } 274 275 void 276 write_data(fsinfo_t *fsopts, fsnode *node, unsigned char *buf, size_t len, 277 uint32_t ofs) 278 { 279 struct chfs_flash_data_node fdata; 280 281 memset(&fdata, 0, sizeof(fdata)); 282 if (len == 0) { 283 return; 284 } 285 286 pad_block_if_less_than(fsopts, sizeof(fdata) + len); 287 288 fdata.magic = htole16(CHFS_FS_MAGIC_BITMASK); 289 fdata.type = htole16(CHFS_NODETYPE_DATA); 290 fdata.length = htole32(CHFS_PAD(sizeof(fdata) + len)); 291 fdata.hdr_crc = htole32(crc32(0, (uint8_t *)&fdata, 292 CHFS_NODE_HDR_SIZE - 4)); 293 fdata.vno = htole64(node->inode->ino); 294 fdata.data_length = htole32(len); 295 fdata.offset = htole32(ofs); 296 fdata.data_crc = htole32(crc32(0, (uint8_t *)buf, len)); 297 fdata.node_crc = htole32(crc32(0, 298 (uint8_t *)&fdata, sizeof(fdata) - 4)); 299 300 buf_write(fsopts, &fdata, sizeof(fdata)); 301 buf_write(fsopts, buf, len); 302 padword(fsopts); 303 } 304
Indexes created Tue Oct 14 21:09:58 GMT 2025