udf_subr.c revision 1.15.4.2
1 1.15.4.2 rpaulo /* $NetBSD: udf_subr.c,v 1.15.4.2 2006/09/09 02:57:06 rpaulo Exp $ */ 2 1.15.4.2 rpaulo 3 1.15.4.2 rpaulo /* 4 1.15.4.2 rpaulo * Copyright (c) 2006 Reinoud Zandijk 5 1.15.4.2 rpaulo * All rights reserved. 6 1.15.4.2 rpaulo * 7 1.15.4.2 rpaulo * Redistribution and use in source and binary forms, with or without 8 1.15.4.2 rpaulo * modification, are permitted provided that the following conditions 9 1.15.4.2 rpaulo * are met: 10 1.15.4.2 rpaulo * 1. Redistributions of source code must retain the above copyright 11 1.15.4.2 rpaulo * notice, this list of conditions and the following disclaimer. 12 1.15.4.2 rpaulo * 2. Redistributions in binary form must reproduce the above copyright 13 1.15.4.2 rpaulo * notice, this list of conditions and the following disclaimer in the 14 1.15.4.2 rpaulo * documentation and/or other materials provided with the distribution. 15 1.15.4.2 rpaulo * 3. All advertising materials mentioning features or use of this software 16 1.15.4.2 rpaulo * must display the following acknowledgement: 17 1.15.4.2 rpaulo * This product includes software developed for the 18 1.15.4.2 rpaulo * NetBSD Project. See http://www.NetBSD.org/ for 19 1.15.4.2 rpaulo * information about NetBSD. 20 1.15.4.2 rpaulo * 4. The name of the author may not be used to endorse or promote products 21 1.15.4.2 rpaulo * derived from this software without specific prior written permission. 22 1.15.4.2 rpaulo * 23 1.15.4.2 rpaulo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 1.15.4.2 rpaulo * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 1.15.4.2 rpaulo * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 1.15.4.2 rpaulo * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 1.15.4.2 rpaulo * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 1.15.4.2 rpaulo * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 1.15.4.2 rpaulo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 1.15.4.2 rpaulo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 1.15.4.2 rpaulo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 1.15.4.2 rpaulo * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 1.15.4.2 rpaulo * 34 1.15.4.2 rpaulo */ 35 1.15.4.2 rpaulo 36 1.15.4.2 rpaulo 37 1.15.4.2 rpaulo #include <sys/cdefs.h> 38 1.15.4.2 rpaulo #ifndef lint 39 1.15.4.2 rpaulo __RCSID("$NetBSD: udf_subr.c,v 1.15.4.2 2006/09/09 02:57:06 rpaulo Exp $"); 40 1.15.4.2 rpaulo #endif /* not lint */ 41 1.15.4.2 rpaulo 42 1.15.4.2 rpaulo 43 1.15.4.2 rpaulo #if defined(_KERNEL_OPT) 44 1.15.4.2 rpaulo #include "opt_quota.h" 45 1.15.4.2 rpaulo #include "opt_compat_netbsd.h" 46 1.15.4.2 rpaulo #endif 47 1.15.4.2 rpaulo 48 1.15.4.2 rpaulo #include <sys/param.h> 49 1.15.4.2 rpaulo #include <sys/systm.h> 50 1.15.4.2 rpaulo #include <sys/sysctl.h> 51 1.15.4.2 rpaulo #include <sys/namei.h> 52 1.15.4.2 rpaulo #include <sys/proc.h> 53 1.15.4.2 rpaulo #include <sys/kernel.h> 54 1.15.4.2 rpaulo #include <sys/vnode.h> 55 1.15.4.2 rpaulo #include <miscfs/genfs/genfs_node.h> 56 1.15.4.2 rpaulo #include <sys/mount.h> 57 1.15.4.2 rpaulo #include <sys/buf.h> 58 1.15.4.2 rpaulo #include <sys/file.h> 59 1.15.4.2 rpaulo #include <sys/device.h> 60 1.15.4.2 rpaulo #include <sys/disklabel.h> 61 1.15.4.2 rpaulo #include <sys/ioctl.h> 62 1.15.4.2 rpaulo #include <sys/malloc.h> 63 1.15.4.2 rpaulo #include <sys/dirent.h> 64 1.15.4.2 rpaulo #include <sys/stat.h> 65 1.15.4.2 rpaulo #include <sys/conf.h> 66 1.15.4.2 rpaulo #include <sys/kauth.h> 67 1.15.4.2 rpaulo 68 1.15.4.2 rpaulo #include <fs/udf/ecma167-udf.h> 69 1.15.4.2 rpaulo #include <fs/udf/udf_mount.h> 70 1.15.4.2 rpaulo 71 1.15.4.2 rpaulo #include "udf.h" 72 1.15.4.2 rpaulo #include "udf_subr.h" 73 1.15.4.2 rpaulo #include "udf_bswap.h" 74 1.15.4.2 rpaulo 75 1.15.4.2 rpaulo 76 1.15.4.2 rpaulo #define VTOI(vnode) ((struct udf_node *) vnode->v_data) 77 1.15.4.2 rpaulo 78 1.15.4.2 rpaulo 79 1.15.4.2 rpaulo /* predefines */ 80 1.15.4.2 rpaulo 81 1.15.4.2 rpaulo 82 1.15.4.2 rpaulo #if 0 83 1.15.4.2 rpaulo { 84 1.15.4.2 rpaulo int i, j, dlen; 85 1.15.4.2 rpaulo uint8_t *blob; 86 1.15.4.2 rpaulo 87 1.15.4.2 rpaulo blob = (uint8_t *) fid; 88 1.15.4.2 rpaulo dlen = file_size - (*offset); 89 1.15.4.2 rpaulo 90 1.15.4.2 rpaulo printf("blob = %p\n", blob); 91 1.15.4.2 rpaulo printf("dump of %d bytes\n", dlen); 92 1.15.4.2 rpaulo 93 1.15.4.2 rpaulo for (i = 0; i < dlen; i+ = 16) { 94 1.15.4.2 rpaulo printf("%04x ", i); 95 1.15.4.2 rpaulo for (j = 0; j < 16; j++) { 96 1.15.4.2 rpaulo if (i+j < dlen) { 97 1.15.4.2 rpaulo printf("%02x ", blob[i+j]); 98 1.15.4.2 rpaulo } else { 99 1.15.4.2 rpaulo printf(" "); 100 1.15.4.2 rpaulo } 101 1.15.4.2 rpaulo } 102 1.15.4.2 rpaulo for (j = 0; j < 16; j++) { 103 1.15.4.2 rpaulo if (i+j < dlen) { 104 1.15.4.2 rpaulo if (blob[i+j]>32 && blob[i+j]! = 127) { 105 1.15.4.2 rpaulo printf("%c", blob[i+j]); 106 1.15.4.2 rpaulo } else { 107 1.15.4.2 rpaulo printf("."); 108 1.15.4.2 rpaulo } 109 1.15.4.2 rpaulo } 110 1.15.4.2 rpaulo } 111 1.15.4.2 rpaulo printf("\n"); 112 1.15.4.2 rpaulo } 113 1.15.4.2 rpaulo printf("\n"); 114 1.15.4.2 rpaulo } 115 1.15.4.2 rpaulo Debugger(); 116 1.15.4.2 rpaulo #endif 117 1.15.4.2 rpaulo 118 1.15.4.2 rpaulo 119 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 120 1.15.4.2 rpaulo 121 1.15.4.2 rpaulo /* STUB */ 122 1.15.4.2 rpaulo 123 1.15.4.2 rpaulo static int 124 1.15.4.2 rpaulo udf_bread(struct udf_mount *ump, uint32_t sector, struct buf **bpp) 125 1.15.4.2 rpaulo { 126 1.15.4.2 rpaulo int sector_size = ump->discinfo.sector_size; 127 1.15.4.2 rpaulo int blks = sector_size / DEV_BSIZE; 128 1.15.4.2 rpaulo 129 1.15.4.2 rpaulo /* NOTE bread() checks if block is in cache or not */ 130 1.15.4.2 rpaulo return bread(ump->devvp, sector*blks, sector_size, NOCRED, bpp); 131 1.15.4.2 rpaulo } 132 1.15.4.2 rpaulo 133 1.15.4.2 rpaulo 134 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 135 1.15.4.2 rpaulo 136 1.15.4.2 rpaulo /* 137 1.15.4.2 rpaulo * Check if the blob starts with a good UDF tag. Tags are protected by a 138 1.15.4.2 rpaulo * checksum over the reader except one byte at position 4 that is the checksum 139 1.15.4.2 rpaulo * itself. 140 1.15.4.2 rpaulo */ 141 1.15.4.2 rpaulo 142 1.15.4.2 rpaulo int 143 1.15.4.2 rpaulo udf_check_tag(void *blob) 144 1.15.4.2 rpaulo { 145 1.15.4.2 rpaulo struct desc_tag *tag = blob; 146 1.15.4.2 rpaulo uint8_t *pos, sum, cnt; 147 1.15.4.2 rpaulo 148 1.15.4.2 rpaulo /* check TAG header checksum */ 149 1.15.4.2 rpaulo pos = (uint8_t *) tag; 150 1.15.4.2 rpaulo sum = 0; 151 1.15.4.2 rpaulo 152 1.15.4.2 rpaulo for(cnt = 0; cnt < 16; cnt++) { 153 1.15.4.2 rpaulo if (cnt != 4) 154 1.15.4.2 rpaulo sum += *pos; 155 1.15.4.2 rpaulo pos++; 156 1.15.4.2 rpaulo } 157 1.15.4.2 rpaulo if (sum != tag->cksum) { 158 1.15.4.2 rpaulo /* bad tag header checksum; this is not a valid tag */ 159 1.15.4.2 rpaulo return EINVAL; 160 1.15.4.2 rpaulo } 161 1.15.4.2 rpaulo 162 1.15.4.2 rpaulo return 0; 163 1.15.4.2 rpaulo } 164 1.15.4.2 rpaulo 165 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 166 1.15.4.2 rpaulo 167 1.15.4.2 rpaulo /* 168 1.15.4.2 rpaulo * check tag payload will check descriptor CRC as specified. 169 1.15.4.2 rpaulo * If the descriptor is too short, it will return EIO otherwise EINVAL. 170 1.15.4.2 rpaulo */ 171 1.15.4.2 rpaulo 172 1.15.4.2 rpaulo int 173 1.15.4.2 rpaulo udf_check_tag_payload(void *blob, uint32_t max_length) 174 1.15.4.2 rpaulo { 175 1.15.4.2 rpaulo struct desc_tag *tag = blob; 176 1.15.4.2 rpaulo uint16_t crc, crc_len; 177 1.15.4.2 rpaulo 178 1.15.4.2 rpaulo crc_len = udf_rw16(tag->desc_crc_len); 179 1.15.4.2 rpaulo 180 1.15.4.2 rpaulo /* check payload CRC if applicable */ 181 1.15.4.2 rpaulo if (crc_len == 0) 182 1.15.4.2 rpaulo return 0; 183 1.15.4.2 rpaulo 184 1.15.4.2 rpaulo if (crc_len > max_length) 185 1.15.4.2 rpaulo return EIO; 186 1.15.4.2 rpaulo 187 1.15.4.2 rpaulo crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 188 1.15.4.2 rpaulo if (crc != udf_rw16(tag->desc_crc)) { 189 1.15.4.2 rpaulo /* bad payload CRC; this is a broken tag */ 190 1.15.4.2 rpaulo return EINVAL; 191 1.15.4.2 rpaulo } 192 1.15.4.2 rpaulo 193 1.15.4.2 rpaulo return 0; 194 1.15.4.2 rpaulo } 195 1.15.4.2 rpaulo 196 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 197 1.15.4.2 rpaulo 198 1.15.4.2 rpaulo int 199 1.15.4.2 rpaulo udf_validate_tag_sum(void *blob) 200 1.15.4.2 rpaulo { 201 1.15.4.2 rpaulo struct desc_tag *tag = blob; 202 1.15.4.2 rpaulo uint8_t *pos, sum, cnt; 203 1.15.4.2 rpaulo 204 1.15.4.2 rpaulo /* calculate TAG header checksum */ 205 1.15.4.2 rpaulo pos = (uint8_t *) tag; 206 1.15.4.2 rpaulo sum = 0; 207 1.15.4.2 rpaulo 208 1.15.4.2 rpaulo for(cnt = 0; cnt < 16; cnt++) { 209 1.15.4.2 rpaulo if (cnt != 4) sum += *pos; 210 1.15.4.2 rpaulo pos++; 211 1.15.4.2 rpaulo } 212 1.15.4.2 rpaulo tag->cksum = sum; /* 8 bit */ 213 1.15.4.2 rpaulo 214 1.15.4.2 rpaulo return 0; 215 1.15.4.2 rpaulo } 216 1.15.4.2 rpaulo 217 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 218 1.15.4.2 rpaulo 219 1.15.4.2 rpaulo /* assumes sector number of descriptor to be saved already present */ 220 1.15.4.2 rpaulo 221 1.15.4.2 rpaulo int 222 1.15.4.2 rpaulo udf_validate_tag_and_crc_sums(void *blob) 223 1.15.4.2 rpaulo { 224 1.15.4.2 rpaulo struct desc_tag *tag = blob; 225 1.15.4.2 rpaulo uint8_t *btag = (uint8_t *) tag; 226 1.15.4.2 rpaulo uint16_t crc, crc_len; 227 1.15.4.2 rpaulo 228 1.15.4.2 rpaulo crc_len = udf_rw16(tag->desc_crc_len); 229 1.15.4.2 rpaulo 230 1.15.4.2 rpaulo /* check payload CRC if applicable */ 231 1.15.4.2 rpaulo if (crc_len > 0) { 232 1.15.4.2 rpaulo crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 233 1.15.4.2 rpaulo tag->desc_crc = udf_rw16(crc); 234 1.15.4.2 rpaulo } 235 1.15.4.2 rpaulo 236 1.15.4.2 rpaulo /* calculate TAG header checksum */ 237 1.15.4.2 rpaulo return udf_validate_tag_sum(blob); 238 1.15.4.2 rpaulo } 239 1.15.4.2 rpaulo 240 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 241 1.15.4.2 rpaulo 242 1.15.4.2 rpaulo /* 243 1.15.4.2 rpaulo * XXX note the different semantics from udfclient: for FIDs it still rounds 244 1.15.4.2 rpaulo * up to sectors. Use udf_fidsize() for a correct length. 245 1.15.4.2 rpaulo */ 246 1.15.4.2 rpaulo 247 1.15.4.2 rpaulo int 248 1.15.4.2 rpaulo udf_tagsize(union dscrptr *dscr, uint32_t udf_sector_size) 249 1.15.4.2 rpaulo { 250 1.15.4.2 rpaulo uint32_t size, tag_id, num_secs, elmsz; 251 1.15.4.2 rpaulo 252 1.15.4.2 rpaulo tag_id = udf_rw16(dscr->tag.id); 253 1.15.4.2 rpaulo 254 1.15.4.2 rpaulo switch (tag_id) { 255 1.15.4.2 rpaulo case TAGID_LOGVOL : 256 1.15.4.2 rpaulo size = sizeof(struct logvol_desc) - 1; 257 1.15.4.2 rpaulo size += udf_rw32(dscr->lvd.mt_l); 258 1.15.4.2 rpaulo break; 259 1.15.4.2 rpaulo case TAGID_UNALLOC_SPACE : 260 1.15.4.2 rpaulo elmsz = sizeof(struct extent_ad); 261 1.15.4.2 rpaulo size = sizeof(struct unalloc_sp_desc) - elmsz; 262 1.15.4.2 rpaulo size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 263 1.15.4.2 rpaulo break; 264 1.15.4.2 rpaulo case TAGID_FID : 265 1.15.4.2 rpaulo size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 266 1.15.4.2 rpaulo size = (size + 3) & ~3; 267 1.15.4.2 rpaulo break; 268 1.15.4.2 rpaulo case TAGID_LOGVOL_INTEGRITY : 269 1.15.4.2 rpaulo size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 270 1.15.4.2 rpaulo size += udf_rw32(dscr->lvid.l_iu); 271 1.15.4.2 rpaulo size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 272 1.15.4.2 rpaulo break; 273 1.15.4.2 rpaulo case TAGID_SPACE_BITMAP : 274 1.15.4.2 rpaulo size = sizeof(struct space_bitmap_desc) - 1; 275 1.15.4.2 rpaulo size += udf_rw32(dscr->sbd.num_bytes); 276 1.15.4.2 rpaulo break; 277 1.15.4.2 rpaulo case TAGID_SPARING_TABLE : 278 1.15.4.2 rpaulo elmsz = sizeof(struct spare_map_entry); 279 1.15.4.2 rpaulo size = sizeof(struct udf_sparing_table) - elmsz; 280 1.15.4.2 rpaulo size += udf_rw16(dscr->spt.rt_l) * elmsz; 281 1.15.4.2 rpaulo break; 282 1.15.4.2 rpaulo case TAGID_FENTRY : 283 1.15.4.2 rpaulo size = sizeof(struct file_entry); 284 1.15.4.2 rpaulo size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 285 1.15.4.2 rpaulo break; 286 1.15.4.2 rpaulo case TAGID_EXTFENTRY : 287 1.15.4.2 rpaulo size = sizeof(struct extfile_entry); 288 1.15.4.2 rpaulo size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 289 1.15.4.2 rpaulo break; 290 1.15.4.2 rpaulo case TAGID_FSD : 291 1.15.4.2 rpaulo size = sizeof(struct fileset_desc); 292 1.15.4.2 rpaulo break; 293 1.15.4.2 rpaulo default : 294 1.15.4.2 rpaulo size = sizeof(union dscrptr); 295 1.15.4.2 rpaulo break; 296 1.15.4.2 rpaulo } 297 1.15.4.2 rpaulo 298 1.15.4.2 rpaulo if ((size == 0) || (udf_sector_size == 0)) return 0; 299 1.15.4.2 rpaulo 300 1.15.4.2 rpaulo /* round up in sectors */ 301 1.15.4.2 rpaulo num_secs = (size + udf_sector_size -1) / udf_sector_size; 302 1.15.4.2 rpaulo return num_secs * udf_sector_size; 303 1.15.4.2 rpaulo } 304 1.15.4.2 rpaulo 305 1.15.4.2 rpaulo 306 1.15.4.2 rpaulo static int 307 1.15.4.2 rpaulo udf_fidsize(struct fileid_desc *fid, uint32_t udf_sector_size) 308 1.15.4.2 rpaulo { 309 1.15.4.2 rpaulo uint32_t size; 310 1.15.4.2 rpaulo 311 1.15.4.2 rpaulo if (udf_rw16(fid->tag.id) != TAGID_FID) 312 1.15.4.2 rpaulo panic("got udf_fidsize on non FID\n"); 313 1.15.4.2 rpaulo 314 1.15.4.2 rpaulo size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 315 1.15.4.2 rpaulo size = (size + 3) & ~3; 316 1.15.4.2 rpaulo 317 1.15.4.2 rpaulo return size; 318 1.15.4.2 rpaulo } 319 1.15.4.2 rpaulo 320 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 321 1.15.4.2 rpaulo 322 1.15.4.2 rpaulo /* 323 1.15.4.2 rpaulo * Problem with read_descriptor are long descriptors spanning more than one 324 1.15.4.2 rpaulo * sector. Luckily long descriptors can't be in `logical space'. 325 1.15.4.2 rpaulo * 326 1.15.4.2 rpaulo * Size of allocated piece is returned in multiple of sector size due to 327 1.15.4.2 rpaulo * udf_calc_udf_malloc_size(). 328 1.15.4.2 rpaulo */ 329 1.15.4.2 rpaulo 330 1.15.4.2 rpaulo int 331 1.15.4.2 rpaulo udf_read_descriptor(struct udf_mount *ump, uint32_t sector, 332 1.15.4.2 rpaulo struct malloc_type *mtype, union dscrptr **dstp) 333 1.15.4.2 rpaulo { 334 1.15.4.2 rpaulo union dscrptr *src, *dst; 335 1.15.4.2 rpaulo struct buf *bp; 336 1.15.4.2 rpaulo uint8_t *pos; 337 1.15.4.2 rpaulo int blks, blk, dscrlen; 338 1.15.4.2 rpaulo int i, error, sector_size; 339 1.15.4.2 rpaulo 340 1.15.4.2 rpaulo sector_size = ump->discinfo.sector_size; 341 1.15.4.2 rpaulo 342 1.15.4.2 rpaulo *dstp = dst = NULL; 343 1.15.4.2 rpaulo dscrlen = sector_size; 344 1.15.4.2 rpaulo 345 1.15.4.2 rpaulo /* read initial piece */ 346 1.15.4.2 rpaulo error = udf_bread(ump, sector, &bp); 347 1.15.4.2 rpaulo DPRINTFIF(DESCRIPTOR, error, ("read error (%d)\n", error)); 348 1.15.4.2 rpaulo 349 1.15.4.2 rpaulo if (!error) { 350 1.15.4.2 rpaulo /* check if its a valid tag */ 351 1.15.4.2 rpaulo error = udf_check_tag(bp->b_data); 352 1.15.4.2 rpaulo if (error) { 353 1.15.4.2 rpaulo /* check if its an empty block */ 354 1.15.4.2 rpaulo pos = bp->b_data; 355 1.15.4.2 rpaulo for (i = 0; i < sector_size; i++, pos++) { 356 1.15.4.2 rpaulo if (*pos) break; 357 1.15.4.2 rpaulo } 358 1.15.4.2 rpaulo if (i == sector_size) { 359 1.15.4.2 rpaulo /* return no error but with no dscrptr */ 360 1.15.4.2 rpaulo /* dispose first block */ 361 1.15.4.2 rpaulo brelse(bp); 362 1.15.4.2 rpaulo return 0; 363 1.15.4.2 rpaulo } 364 1.15.4.2 rpaulo } 365 1.15.4.2 rpaulo } 366 1.15.4.2 rpaulo DPRINTFIF(DESCRIPTOR, error, ("bad tag checksum\n")); 367 1.15.4.2 rpaulo if (!error) { 368 1.15.4.2 rpaulo src = (union dscrptr *) bp->b_data; 369 1.15.4.2 rpaulo dscrlen = udf_tagsize(src, sector_size); 370 1.15.4.2 rpaulo dst = malloc(dscrlen, mtype, M_WAITOK); 371 1.15.4.2 rpaulo memcpy(dst, src, sector_size); 372 1.15.4.2 rpaulo } 373 1.15.4.2 rpaulo /* dispose first block */ 374 1.15.4.2 rpaulo bp->b_flags |= B_AGE; 375 1.15.4.2 rpaulo brelse(bp); 376 1.15.4.2 rpaulo 377 1.15.4.2 rpaulo if (!error && (dscrlen > sector_size)) { 378 1.15.4.2 rpaulo DPRINTF(DESCRIPTOR, ("multi block descriptor read\n")); 379 1.15.4.2 rpaulo /* 380 1.15.4.2 rpaulo * Read the rest of descriptor. Since it is only used at mount 381 1.15.4.2 rpaulo * time its overdone to define and use a specific udf_breadn 382 1.15.4.2 rpaulo * for this alone. 383 1.15.4.2 rpaulo */ 384 1.15.4.2 rpaulo blks = (dscrlen + sector_size -1) / sector_size; 385 1.15.4.2 rpaulo for (blk = 1; blk < blks; blk++) { 386 1.15.4.2 rpaulo error = udf_bread(ump, sector + blk, &bp); 387 1.15.4.2 rpaulo if (error) { 388 1.15.4.2 rpaulo brelse(bp); 389 1.15.4.2 rpaulo break; 390 1.15.4.2 rpaulo } 391 1.15.4.2 rpaulo pos = (uint8_t *) dst + blk*sector_size; 392 1.15.4.2 rpaulo memcpy(pos, bp->b_data, sector_size); 393 1.15.4.2 rpaulo 394 1.15.4.2 rpaulo /* dispose block */ 395 1.15.4.2 rpaulo bp->b_flags |= B_AGE; 396 1.15.4.2 rpaulo brelse(bp); 397 1.15.4.2 rpaulo } 398 1.15.4.2 rpaulo DPRINTFIF(DESCRIPTOR, error, ("read error on multi (%d)\n", 399 1.15.4.2 rpaulo error)); 400 1.15.4.2 rpaulo } 401 1.15.4.2 rpaulo if (!error) { 402 1.15.4.2 rpaulo error = udf_check_tag_payload(dst, dscrlen); 403 1.15.4.2 rpaulo DPRINTFIF(DESCRIPTOR, error, ("bad payload check sum\n")); 404 1.15.4.2 rpaulo } 405 1.15.4.2 rpaulo if (error && dst) { 406 1.15.4.2 rpaulo free(dst, mtype); 407 1.15.4.2 rpaulo dst = NULL; 408 1.15.4.2 rpaulo } 409 1.15.4.2 rpaulo *dstp = dst; 410 1.15.4.2 rpaulo 411 1.15.4.2 rpaulo return error; 412 1.15.4.2 rpaulo } 413 1.15.4.2 rpaulo 414 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 415 1.15.4.2 rpaulo #ifdef DEBUG 416 1.15.4.2 rpaulo static void 417 1.15.4.2 rpaulo udf_dump_discinfo(struct udf_mount *ump) 418 1.15.4.2 rpaulo { 419 1.15.4.2 rpaulo char bits[128]; 420 1.15.4.2 rpaulo struct mmc_discinfo *di = &ump->discinfo; 421 1.15.4.2 rpaulo 422 1.15.4.2 rpaulo if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 423 1.15.4.2 rpaulo return; 424 1.15.4.2 rpaulo 425 1.15.4.2 rpaulo printf("Device/media info :\n"); 426 1.15.4.2 rpaulo printf("\tMMC profile 0x%02x\n", di->mmc_profile); 427 1.15.4.2 rpaulo printf("\tderived class %d\n", di->mmc_class); 428 1.15.4.2 rpaulo printf("\tsector size %d\n", di->sector_size); 429 1.15.4.2 rpaulo printf("\tdisc state %d\n", di->disc_state); 430 1.15.4.2 rpaulo printf("\tlast ses state %d\n", di->last_session_state); 431 1.15.4.2 rpaulo printf("\tbg format state %d\n", di->bg_format_state); 432 1.15.4.2 rpaulo printf("\tfrst track %d\n", di->first_track); 433 1.15.4.2 rpaulo printf("\tfst on last ses %d\n", di->first_track_last_session); 434 1.15.4.2 rpaulo printf("\tlst on last ses %d\n", di->last_track_last_session); 435 1.15.4.2 rpaulo printf("\tlink block penalty %d\n", di->link_block_penalty); 436 1.15.4.2 rpaulo bitmask_snprintf(di->disc_flags, MMC_DFLAGS_FLAGBITS, bits, 437 1.15.4.2 rpaulo sizeof(bits)); 438 1.15.4.2 rpaulo printf("\tdisc flags %s\n", bits); 439 1.15.4.2 rpaulo printf("\tdisc id %x\n", di->disc_id); 440 1.15.4.2 rpaulo printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 441 1.15.4.2 rpaulo 442 1.15.4.2 rpaulo printf("\tnum sessions %d\n", di->num_sessions); 443 1.15.4.2 rpaulo printf("\tnum tracks %d\n", di->num_tracks); 444 1.15.4.2 rpaulo 445 1.15.4.2 rpaulo bitmask_snprintf(di->mmc_cur, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 446 1.15.4.2 rpaulo printf("\tcapabilities cur %s\n", bits); 447 1.15.4.2 rpaulo bitmask_snprintf(di->mmc_cap, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 448 1.15.4.2 rpaulo printf("\tcapabilities cap %s\n", bits); 449 1.15.4.2 rpaulo } 450 1.15.4.2 rpaulo #else 451 1.15.4.2 rpaulo #define udf_dump_discinfo(a); 452 1.15.4.2 rpaulo #endif 453 1.15.4.2 rpaulo 454 1.15.4.2 rpaulo /* not called often */ 455 1.15.4.2 rpaulo int 456 1.15.4.2 rpaulo udf_update_discinfo(struct udf_mount *ump) 457 1.15.4.2 rpaulo { 458 1.15.4.2 rpaulo struct vnode *devvp = ump->devvp; 459 1.15.4.2 rpaulo struct partinfo dpart; 460 1.15.4.2 rpaulo struct mmc_discinfo *di; 461 1.15.4.2 rpaulo int error; 462 1.15.4.2 rpaulo 463 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("read/update disc info\n")); 464 1.15.4.2 rpaulo di = &ump->discinfo; 465 1.15.4.2 rpaulo memset(di, 0, sizeof(struct mmc_discinfo)); 466 1.15.4.2 rpaulo 467 1.15.4.2 rpaulo /* check if we're on a MMC capable device, i.e. CD/DVD */ 468 1.15.4.2 rpaulo error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED, NULL); 469 1.15.4.2 rpaulo if (error == 0) { 470 1.15.4.2 rpaulo udf_dump_discinfo(ump); 471 1.15.4.2 rpaulo return 0; 472 1.15.4.2 rpaulo } 473 1.15.4.2 rpaulo 474 1.15.4.2 rpaulo /* disc partition support */ 475 1.15.4.2 rpaulo error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED, NULL); 476 1.15.4.2 rpaulo if (error) 477 1.15.4.2 rpaulo return ENODEV; 478 1.15.4.2 rpaulo 479 1.15.4.2 rpaulo /* set up a disc info profile for partitions */ 480 1.15.4.2 rpaulo di->mmc_profile = 0x01; /* disc type */ 481 1.15.4.2 rpaulo di->mmc_class = MMC_CLASS_DISC; 482 1.15.4.2 rpaulo di->disc_state = MMC_STATE_CLOSED; 483 1.15.4.2 rpaulo di->last_session_state = MMC_STATE_CLOSED; 484 1.15.4.2 rpaulo di->bg_format_state = MMC_BGFSTATE_COMPLETED; 485 1.15.4.2 rpaulo di->link_block_penalty = 0; 486 1.15.4.2 rpaulo 487 1.15.4.2 rpaulo di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 488 1.15.4.2 rpaulo MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 489 1.15.4.2 rpaulo di->mmc_cap = di->mmc_cur; 490 1.15.4.2 rpaulo di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 491 1.15.4.2 rpaulo 492 1.15.4.2 rpaulo /* TODO problem with last_possible_lba on resizable VND; request */ 493 1.15.4.2 rpaulo di->last_possible_lba = dpart.part->p_size; 494 1.15.4.2 rpaulo di->sector_size = dpart.disklab->d_secsize; 495 1.15.4.2 rpaulo di->blockingnr = 1; 496 1.15.4.2 rpaulo 497 1.15.4.2 rpaulo di->num_sessions = 1; 498 1.15.4.2 rpaulo di->num_tracks = 1; 499 1.15.4.2 rpaulo 500 1.15.4.2 rpaulo di->first_track = 1; 501 1.15.4.2 rpaulo di->first_track_last_session = di->last_track_last_session = 1; 502 1.15.4.2 rpaulo 503 1.15.4.2 rpaulo udf_dump_discinfo(ump); 504 1.15.4.2 rpaulo return 0; 505 1.15.4.2 rpaulo } 506 1.15.4.2 rpaulo 507 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 508 1.15.4.2 rpaulo 509 1.15.4.2 rpaulo int 510 1.15.4.2 rpaulo udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 511 1.15.4.2 rpaulo { 512 1.15.4.2 rpaulo struct vnode *devvp = ump->devvp; 513 1.15.4.2 rpaulo struct mmc_discinfo *di = &ump->discinfo; 514 1.15.4.2 rpaulo int error, class; 515 1.15.4.2 rpaulo 516 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("read track info\n")); 517 1.15.4.2 rpaulo 518 1.15.4.2 rpaulo class = di->mmc_class; 519 1.15.4.2 rpaulo if (class != MMC_CLASS_DISC) { 520 1.15.4.2 rpaulo /* tracknr specified in struct ti */ 521 1.15.4.2 rpaulo error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, 522 1.15.4.2 rpaulo NOCRED, NULL); 523 1.15.4.2 rpaulo return error; 524 1.15.4.2 rpaulo } 525 1.15.4.2 rpaulo 526 1.15.4.2 rpaulo /* disc partition support */ 527 1.15.4.2 rpaulo if (ti->tracknr != 1) 528 1.15.4.2 rpaulo return EIO; 529 1.15.4.2 rpaulo 530 1.15.4.2 rpaulo /* create fake ti (TODO check for resized vnds) */ 531 1.15.4.2 rpaulo ti->sessionnr = 1; 532 1.15.4.2 rpaulo 533 1.15.4.2 rpaulo ti->track_mode = 0; /* XXX */ 534 1.15.4.2 rpaulo ti->data_mode = 0; /* XXX */ 535 1.15.4.2 rpaulo ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 536 1.15.4.2 rpaulo 537 1.15.4.2 rpaulo ti->track_start = 0; 538 1.15.4.2 rpaulo ti->packet_size = 1; 539 1.15.4.2 rpaulo 540 1.15.4.2 rpaulo /* TODO support for resizable vnd */ 541 1.15.4.2 rpaulo ti->track_size = di->last_possible_lba; 542 1.15.4.2 rpaulo ti->next_writable = di->last_possible_lba; 543 1.15.4.2 rpaulo ti->last_recorded = ti->next_writable; 544 1.15.4.2 rpaulo ti->free_blocks = 0; 545 1.15.4.2 rpaulo 546 1.15.4.2 rpaulo return 0; 547 1.15.4.2 rpaulo } 548 1.15.4.2 rpaulo 549 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 550 1.15.4.2 rpaulo 551 1.15.4.2 rpaulo /* track/session searching for mounting */ 552 1.15.4.2 rpaulo 553 1.15.4.2 rpaulo static int 554 1.15.4.2 rpaulo udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 555 1.15.4.2 rpaulo int *first_tracknr, int *last_tracknr) 556 1.15.4.2 rpaulo { 557 1.15.4.2 rpaulo struct mmc_trackinfo trackinfo; 558 1.15.4.2 rpaulo uint32_t tracknr, start_track, num_tracks; 559 1.15.4.2 rpaulo int error; 560 1.15.4.2 rpaulo 561 1.15.4.2 rpaulo /* if negative, sessionnr is relative to last session */ 562 1.15.4.2 rpaulo if (args->sessionnr < 0) { 563 1.15.4.2 rpaulo args->sessionnr += ump->discinfo.num_sessions; 564 1.15.4.2 rpaulo /* sanity */ 565 1.15.4.2 rpaulo if (args->sessionnr < 0) 566 1.15.4.2 rpaulo args->sessionnr = 0; 567 1.15.4.2 rpaulo } 568 1.15.4.2 rpaulo 569 1.15.4.2 rpaulo /* sanity */ 570 1.15.4.2 rpaulo if (args->sessionnr > ump->discinfo.num_sessions) 571 1.15.4.2 rpaulo args->sessionnr = ump->discinfo.num_sessions; 572 1.15.4.2 rpaulo 573 1.15.4.2 rpaulo /* search the tracks for this session, zero session nr indicates last */ 574 1.15.4.2 rpaulo if (args->sessionnr == 0) { 575 1.15.4.2 rpaulo args->sessionnr = ump->discinfo.num_sessions; 576 1.15.4.2 rpaulo if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) { 577 1.15.4.2 rpaulo args->sessionnr--; 578 1.15.4.2 rpaulo } 579 1.15.4.2 rpaulo } 580 1.15.4.2 rpaulo 581 1.15.4.2 rpaulo /* search the first and last track of the specified session */ 582 1.15.4.2 rpaulo num_tracks = ump->discinfo.num_tracks; 583 1.15.4.2 rpaulo start_track = ump->discinfo.first_track; 584 1.15.4.2 rpaulo 585 1.15.4.2 rpaulo /* search for first track of this session */ 586 1.15.4.2 rpaulo for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 587 1.15.4.2 rpaulo /* get track info */ 588 1.15.4.2 rpaulo trackinfo.tracknr = tracknr; 589 1.15.4.2 rpaulo error = udf_update_trackinfo(ump, &trackinfo); 590 1.15.4.2 rpaulo if (error) 591 1.15.4.2 rpaulo return error; 592 1.15.4.2 rpaulo 593 1.15.4.2 rpaulo if (trackinfo.sessionnr == args->sessionnr) 594 1.15.4.2 rpaulo break; 595 1.15.4.2 rpaulo } 596 1.15.4.2 rpaulo *first_tracknr = tracknr; 597 1.15.4.2 rpaulo 598 1.15.4.2 rpaulo /* search for last track of this session */ 599 1.15.4.2 rpaulo for (;tracknr <= num_tracks; tracknr++) { 600 1.15.4.2 rpaulo /* get track info */ 601 1.15.4.2 rpaulo trackinfo.tracknr = tracknr; 602 1.15.4.2 rpaulo error = udf_update_trackinfo(ump, &trackinfo); 603 1.15.4.2 rpaulo if (error || (trackinfo.sessionnr != args->sessionnr)) { 604 1.15.4.2 rpaulo tracknr--; 605 1.15.4.2 rpaulo break; 606 1.15.4.2 rpaulo } 607 1.15.4.2 rpaulo } 608 1.15.4.2 rpaulo if (tracknr > num_tracks) 609 1.15.4.2 rpaulo tracknr--; 610 1.15.4.2 rpaulo 611 1.15.4.2 rpaulo *last_tracknr = tracknr; 612 1.15.4.2 rpaulo 613 1.15.4.2 rpaulo assert(*last_tracknr >= *first_tracknr); 614 1.15.4.2 rpaulo return 0; 615 1.15.4.2 rpaulo } 616 1.15.4.2 rpaulo 617 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 618 1.15.4.2 rpaulo 619 1.15.4.2 rpaulo static int 620 1.15.4.2 rpaulo udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 621 1.15.4.2 rpaulo { 622 1.15.4.2 rpaulo int error; 623 1.15.4.2 rpaulo 624 1.15.4.2 rpaulo error = udf_read_descriptor(ump, sector, M_UDFVOLD, 625 1.15.4.2 rpaulo (union dscrptr **) dst); 626 1.15.4.2 rpaulo if (!error) { 627 1.15.4.2 rpaulo /* blank terminator blocks are not allowed here */ 628 1.15.4.2 rpaulo if (*dst == NULL) 629 1.15.4.2 rpaulo return ENOENT; 630 1.15.4.2 rpaulo if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 631 1.15.4.2 rpaulo error = ENOENT; 632 1.15.4.2 rpaulo free(*dst, M_UDFVOLD); 633 1.15.4.2 rpaulo *dst = NULL; 634 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Not an anchor\n")); 635 1.15.4.2 rpaulo } 636 1.15.4.2 rpaulo } 637 1.15.4.2 rpaulo 638 1.15.4.2 rpaulo return error; 639 1.15.4.2 rpaulo } 640 1.15.4.2 rpaulo 641 1.15.4.2 rpaulo 642 1.15.4.2 rpaulo int 643 1.15.4.2 rpaulo udf_read_anchors(struct udf_mount *ump, struct udf_args *args) 644 1.15.4.2 rpaulo { 645 1.15.4.2 rpaulo struct mmc_trackinfo first_track; 646 1.15.4.2 rpaulo struct mmc_trackinfo last_track; 647 1.15.4.2 rpaulo struct anchor_vdp **anchorsp; 648 1.15.4.2 rpaulo uint32_t track_start; 649 1.15.4.2 rpaulo uint32_t track_end; 650 1.15.4.2 rpaulo uint32_t positions[4]; 651 1.15.4.2 rpaulo int first_tracknr, last_tracknr; 652 1.15.4.2 rpaulo int error, anch, ok, first_anchor; 653 1.15.4.2 rpaulo 654 1.15.4.2 rpaulo /* search the first and last track of the specified session */ 655 1.15.4.2 rpaulo error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 656 1.15.4.2 rpaulo if (!error) { 657 1.15.4.2 rpaulo first_track.tracknr = first_tracknr; 658 1.15.4.2 rpaulo error = udf_update_trackinfo(ump, &first_track); 659 1.15.4.2 rpaulo } 660 1.15.4.2 rpaulo if (!error) { 661 1.15.4.2 rpaulo last_track.tracknr = last_tracknr; 662 1.15.4.2 rpaulo error = udf_update_trackinfo(ump, &last_track); 663 1.15.4.2 rpaulo } 664 1.15.4.2 rpaulo if (error) { 665 1.15.4.2 rpaulo printf("UDF mount: reading disc geometry failed\n"); 666 1.15.4.2 rpaulo return 0; 667 1.15.4.2 rpaulo } 668 1.15.4.2 rpaulo 669 1.15.4.2 rpaulo track_start = first_track.track_start; 670 1.15.4.2 rpaulo 671 1.15.4.2 rpaulo /* `end' is not as straitforward as start. */ 672 1.15.4.2 rpaulo track_end = last_track.track_start 673 1.15.4.2 rpaulo + last_track.track_size - last_track.free_blocks - 1; 674 1.15.4.2 rpaulo 675 1.15.4.2 rpaulo if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 676 1.15.4.2 rpaulo /* end of track is not straitforward here */ 677 1.15.4.2 rpaulo if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 678 1.15.4.2 rpaulo track_end = last_track.last_recorded; 679 1.15.4.2 rpaulo else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 680 1.15.4.2 rpaulo track_end = last_track.next_writable 681 1.15.4.2 rpaulo - ump->discinfo.link_block_penalty; 682 1.15.4.2 rpaulo } 683 1.15.4.2 rpaulo 684 1.15.4.2 rpaulo /* its no use reading a blank track */ 685 1.15.4.2 rpaulo first_anchor = 0; 686 1.15.4.2 rpaulo if (first_track.flags & MMC_TRACKINFO_BLANK) 687 1.15.4.2 rpaulo first_anchor = 1; 688 1.15.4.2 rpaulo 689 1.15.4.2 rpaulo /* read anchors start+256, start+512, end-256, end */ 690 1.15.4.2 rpaulo positions[0] = track_start+256; 691 1.15.4.2 rpaulo positions[1] = track_end-256; 692 1.15.4.2 rpaulo positions[2] = track_end; 693 1.15.4.2 rpaulo positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 694 1.15.4.2 rpaulo /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 695 1.15.4.2 rpaulo 696 1.15.4.2 rpaulo ok = 0; 697 1.15.4.2 rpaulo anchorsp = ump->anchors; 698 1.15.4.2 rpaulo for (anch = first_anchor; anch < 4; anch++) { 699 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 700 1.15.4.2 rpaulo positions[anch])); 701 1.15.4.2 rpaulo error = udf_read_anchor(ump, positions[anch], anchorsp); 702 1.15.4.2 rpaulo if (!error) { 703 1.15.4.2 rpaulo anchorsp++; 704 1.15.4.2 rpaulo ok++; 705 1.15.4.2 rpaulo } 706 1.15.4.2 rpaulo } 707 1.15.4.2 rpaulo 708 1.15.4.2 rpaulo /* VATs are only recorded on sequential media, but initialise */ 709 1.15.4.2 rpaulo ump->first_possible_vat_location = track_start + 256 + 1; 710 1.15.4.2 rpaulo ump->last_possible_vat_location = track_end 711 1.15.4.2 rpaulo + ump->discinfo.blockingnr; 712 1.15.4.2 rpaulo 713 1.15.4.2 rpaulo return ok; 714 1.15.4.2 rpaulo } 715 1.15.4.2 rpaulo 716 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 717 1.15.4.2 rpaulo 718 1.15.4.2 rpaulo /* we dont try to be smart; we just record the parts */ 719 1.15.4.2 rpaulo #define UDF_UPDATE_DSCR(name, dscr) \ 720 1.15.4.2 rpaulo if (name) \ 721 1.15.4.2 rpaulo free(name, M_UDFVOLD); \ 722 1.15.4.2 rpaulo name = dscr; 723 1.15.4.2 rpaulo 724 1.15.4.2 rpaulo static int 725 1.15.4.2 rpaulo udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 726 1.15.4.2 rpaulo { 727 1.15.4.2 rpaulo uint16_t partnr; 728 1.15.4.2 rpaulo 729 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 730 1.15.4.2 rpaulo udf_rw16(dscr->tag.id))); 731 1.15.4.2 rpaulo switch (udf_rw16(dscr->tag.id)) { 732 1.15.4.2 rpaulo case TAGID_PRI_VOL : /* primary partition */ 733 1.15.4.2 rpaulo UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 734 1.15.4.2 rpaulo break; 735 1.15.4.2 rpaulo case TAGID_LOGVOL : /* logical volume */ 736 1.15.4.2 rpaulo UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 737 1.15.4.2 rpaulo break; 738 1.15.4.2 rpaulo case TAGID_UNALLOC_SPACE : /* unallocated space */ 739 1.15.4.2 rpaulo UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 740 1.15.4.2 rpaulo break; 741 1.15.4.2 rpaulo case TAGID_IMP_VOL : /* implementation */ 742 1.15.4.2 rpaulo /* XXX do we care about multiple impl. descr ? */ 743 1.15.4.2 rpaulo UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 744 1.15.4.2 rpaulo break; 745 1.15.4.2 rpaulo case TAGID_PARTITION : /* physical partition */ 746 1.15.4.2 rpaulo /* not much use if its not allocated */ 747 1.15.4.2 rpaulo if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 748 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 749 1.15.4.2 rpaulo break; 750 1.15.4.2 rpaulo } 751 1.15.4.2 rpaulo 752 1.15.4.2 rpaulo /* check partnr boundaries */ 753 1.15.4.2 rpaulo partnr = udf_rw16(dscr->pd.part_num); 754 1.15.4.2 rpaulo if (partnr >= UDF_PARTITIONS) 755 1.15.4.2 rpaulo return EINVAL; 756 1.15.4.2 rpaulo 757 1.15.4.2 rpaulo UDF_UPDATE_DSCR(ump->partitions[partnr], &dscr->pd); 758 1.15.4.2 rpaulo break; 759 1.15.4.2 rpaulo case TAGID_VOL : /* volume space extender; rare */ 760 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("VDS extender ignored\n")); 761 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 762 1.15.4.2 rpaulo break; 763 1.15.4.2 rpaulo default : 764 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 765 1.15.4.2 rpaulo udf_rw16(dscr->tag.id))); 766 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 767 1.15.4.2 rpaulo } 768 1.15.4.2 rpaulo 769 1.15.4.2 rpaulo return 0; 770 1.15.4.2 rpaulo } 771 1.15.4.2 rpaulo #undef UDF_UPDATE_DSCR 772 1.15.4.2 rpaulo 773 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 774 1.15.4.2 rpaulo 775 1.15.4.2 rpaulo static int 776 1.15.4.2 rpaulo udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 777 1.15.4.2 rpaulo { 778 1.15.4.2 rpaulo union dscrptr *dscr; 779 1.15.4.2 rpaulo uint32_t sector_size, dscr_size; 780 1.15.4.2 rpaulo int error; 781 1.15.4.2 rpaulo 782 1.15.4.2 rpaulo sector_size = ump->discinfo.sector_size; 783 1.15.4.2 rpaulo 784 1.15.4.2 rpaulo /* loc is sectornr, len is in bytes */ 785 1.15.4.2 rpaulo error = EIO; 786 1.15.4.2 rpaulo while (len) { 787 1.15.4.2 rpaulo error = udf_read_descriptor(ump, loc, M_UDFVOLD, &dscr); 788 1.15.4.2 rpaulo if (error) 789 1.15.4.2 rpaulo return error; 790 1.15.4.2 rpaulo 791 1.15.4.2 rpaulo /* blank block is a terminator */ 792 1.15.4.2 rpaulo if (dscr == NULL) 793 1.15.4.2 rpaulo return 0; 794 1.15.4.2 rpaulo 795 1.15.4.2 rpaulo /* TERM descriptor is a terminator */ 796 1.15.4.2 rpaulo if (udf_rw16(dscr->tag.id) == TAGID_TERM) 797 1.15.4.2 rpaulo return 0; 798 1.15.4.2 rpaulo 799 1.15.4.2 rpaulo /* process all others */ 800 1.15.4.2 rpaulo dscr_size = udf_tagsize(dscr, sector_size); 801 1.15.4.2 rpaulo error = udf_process_vds_descriptor(ump, dscr); 802 1.15.4.2 rpaulo if (error) { 803 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 804 1.15.4.2 rpaulo break; 805 1.15.4.2 rpaulo } 806 1.15.4.2 rpaulo assert((dscr_size % sector_size) == 0); 807 1.15.4.2 rpaulo 808 1.15.4.2 rpaulo len -= dscr_size; 809 1.15.4.2 rpaulo loc += dscr_size / sector_size; 810 1.15.4.2 rpaulo } 811 1.15.4.2 rpaulo 812 1.15.4.2 rpaulo return error; 813 1.15.4.2 rpaulo } 814 1.15.4.2 rpaulo 815 1.15.4.2 rpaulo 816 1.15.4.2 rpaulo int 817 1.15.4.2 rpaulo udf_read_vds_space(struct udf_mount *ump) 818 1.15.4.2 rpaulo { 819 1.15.4.2 rpaulo struct anchor_vdp *anchor, *anchor2; 820 1.15.4.2 rpaulo size_t size; 821 1.15.4.2 rpaulo uint32_t main_loc, main_len; 822 1.15.4.2 rpaulo uint32_t reserve_loc, reserve_len; 823 1.15.4.2 rpaulo int error; 824 1.15.4.2 rpaulo 825 1.15.4.2 rpaulo /* 826 1.15.4.2 rpaulo * read in VDS space provided by the anchors; if one descriptor read 827 1.15.4.2 rpaulo * fails, try the mirror sector. 828 1.15.4.2 rpaulo * 829 1.15.4.2 rpaulo * check if 2nd anchor is different from 1st; if so, go for 2nd. This 830 1.15.4.2 rpaulo * avoids the `compatibility features' of DirectCD that may confuse 831 1.15.4.2 rpaulo * stuff completely. 832 1.15.4.2 rpaulo */ 833 1.15.4.2 rpaulo 834 1.15.4.2 rpaulo anchor = ump->anchors[0]; 835 1.15.4.2 rpaulo anchor2 = ump->anchors[1]; 836 1.15.4.2 rpaulo assert(anchor); 837 1.15.4.2 rpaulo 838 1.15.4.2 rpaulo if (anchor2) { 839 1.15.4.2 rpaulo size = sizeof(struct extent_ad); 840 1.15.4.2 rpaulo if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 841 1.15.4.2 rpaulo anchor = anchor2; 842 1.15.4.2 rpaulo /* reserve is specified to be a literal copy of main */ 843 1.15.4.2 rpaulo } 844 1.15.4.2 rpaulo 845 1.15.4.2 rpaulo main_loc = udf_rw32(anchor->main_vds_ex.loc); 846 1.15.4.2 rpaulo main_len = udf_rw32(anchor->main_vds_ex.len); 847 1.15.4.2 rpaulo 848 1.15.4.2 rpaulo reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 849 1.15.4.2 rpaulo reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 850 1.15.4.2 rpaulo 851 1.15.4.2 rpaulo error = udf_read_vds_extent(ump, main_loc, main_len); 852 1.15.4.2 rpaulo if (error) { 853 1.15.4.2 rpaulo printf("UDF mount: reading in reserve VDS extent\n"); 854 1.15.4.2 rpaulo error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 855 1.15.4.2 rpaulo } 856 1.15.4.2 rpaulo 857 1.15.4.2 rpaulo return error; 858 1.15.4.2 rpaulo } 859 1.15.4.2 rpaulo 860 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 861 1.15.4.2 rpaulo 862 1.15.4.2 rpaulo /* 863 1.15.4.2 rpaulo * Read in the logical volume integrity sequence pointed to by our logical 864 1.15.4.2 rpaulo * volume descriptor. Its a sequence that can be extended using fields in the 865 1.15.4.2 rpaulo * integrity descriptor itself. On sequential media only one is found, on 866 1.15.4.2 rpaulo * rewritable media a sequence of descriptors can be found as a form of 867 1.15.4.2 rpaulo * history keeping and on non sequential write-once media the chain is vital 868 1.15.4.2 rpaulo * to allow more and more descriptors to be written. The last descriptor 869 1.15.4.2 rpaulo * written in an extent needs to claim space for a new extent. 870 1.15.4.2 rpaulo */ 871 1.15.4.2 rpaulo 872 1.15.4.2 rpaulo static int 873 1.15.4.2 rpaulo udf_retrieve_lvint(struct udf_mount *ump, struct logvol_int_desc **lvintp) 874 1.15.4.2 rpaulo { 875 1.15.4.2 rpaulo union dscrptr *dscr; 876 1.15.4.2 rpaulo struct logvol_int_desc *lvint; 877 1.15.4.2 rpaulo uint32_t sector_size, sector, len; 878 1.15.4.2 rpaulo int dscr_type, error; 879 1.15.4.2 rpaulo 880 1.15.4.2 rpaulo sector_size = ump->discinfo.sector_size; 881 1.15.4.2 rpaulo len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 882 1.15.4.2 rpaulo sector = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 883 1.15.4.2 rpaulo 884 1.15.4.2 rpaulo lvint = NULL; 885 1.15.4.2 rpaulo dscr = NULL; 886 1.15.4.2 rpaulo error = 0; 887 1.15.4.2 rpaulo while (len) { 888 1.15.4.2 rpaulo /* read in our integrity descriptor */ 889 1.15.4.2 rpaulo error = udf_read_descriptor(ump, sector, M_UDFVOLD, &dscr); 890 1.15.4.2 rpaulo if (!error) { 891 1.15.4.2 rpaulo if (dscr == NULL) 892 1.15.4.2 rpaulo break; /* empty terminates */ 893 1.15.4.2 rpaulo dscr_type = udf_rw16(dscr->tag.id); 894 1.15.4.2 rpaulo if (dscr_type == TAGID_TERM) { 895 1.15.4.2 rpaulo break; /* clean terminator */ 896 1.15.4.2 rpaulo } 897 1.15.4.2 rpaulo if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 898 1.15.4.2 rpaulo /* fatal... corrupt disc */ 899 1.15.4.2 rpaulo error = ENOENT; 900 1.15.4.2 rpaulo break; 901 1.15.4.2 rpaulo } 902 1.15.4.2 rpaulo if (lvint) 903 1.15.4.2 rpaulo free(lvint, M_UDFVOLD); 904 1.15.4.2 rpaulo lvint = &dscr->lvid; 905 1.15.4.2 rpaulo dscr = NULL; 906 1.15.4.2 rpaulo } /* else hope for the best... maybe the next is ok */ 907 1.15.4.2 rpaulo 908 1.15.4.2 rpaulo DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 909 1.15.4.2 rpaulo udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 910 1.15.4.2 rpaulo 911 1.15.4.2 rpaulo /* proceed sequential */ 912 1.15.4.2 rpaulo sector += 1; 913 1.15.4.2 rpaulo len -= sector_size; 914 1.15.4.2 rpaulo 915 1.15.4.2 rpaulo /* are we linking to a new piece? */ 916 1.15.4.2 rpaulo if (lvint->next_extent.len) { 917 1.15.4.2 rpaulo len = udf_rw32(lvint->next_extent.len); 918 1.15.4.2 rpaulo sector = udf_rw32(lvint->next_extent.loc); 919 1.15.4.2 rpaulo } 920 1.15.4.2 rpaulo } 921 1.15.4.2 rpaulo 922 1.15.4.2 rpaulo /* clean up the mess, esp. when there is an error */ 923 1.15.4.2 rpaulo if (dscr) 924 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 925 1.15.4.2 rpaulo 926 1.15.4.2 rpaulo if (error && lvint) { 927 1.15.4.2 rpaulo free(lvint, M_UDFVOLD); 928 1.15.4.2 rpaulo lvint = NULL; 929 1.15.4.2 rpaulo } 930 1.15.4.2 rpaulo 931 1.15.4.2 rpaulo if (!lvint) 932 1.15.4.2 rpaulo error = ENOENT; 933 1.15.4.2 rpaulo 934 1.15.4.2 rpaulo *lvintp = lvint; 935 1.15.4.2 rpaulo return error; 936 1.15.4.2 rpaulo } 937 1.15.4.2 rpaulo 938 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 939 1.15.4.2 rpaulo 940 1.15.4.2 rpaulo /* 941 1.15.4.2 rpaulo * Checks if ump's vds information is correct and complete 942 1.15.4.2 rpaulo */ 943 1.15.4.2 rpaulo 944 1.15.4.2 rpaulo int 945 1.15.4.2 rpaulo udf_process_vds(struct udf_mount *ump, struct udf_args *args) { 946 1.15.4.2 rpaulo union udf_pmap *mapping; 947 1.15.4.2 rpaulo struct logvol_int_desc *lvint; 948 1.15.4.2 rpaulo struct udf_logvol_info *lvinfo; 949 1.15.4.2 rpaulo uint32_t n_pm, mt_l; 950 1.15.4.2 rpaulo uint8_t *pmap_pos; 951 1.15.4.2 rpaulo char *domain_name, *map_name; 952 1.15.4.2 rpaulo const char *check_name; 953 1.15.4.2 rpaulo int pmap_stype, pmap_size; 954 1.15.4.2 rpaulo int pmap_type, log_part, phys_part; 955 1.15.4.2 rpaulo int n_phys, n_virt, n_spar, n_meta; 956 1.15.4.2 rpaulo int len, error; 957 1.15.4.2 rpaulo 958 1.15.4.2 rpaulo if (ump == NULL) 959 1.15.4.2 rpaulo return ENOENT; 960 1.15.4.2 rpaulo 961 1.15.4.2 rpaulo /* we need at least an anchor (trivial, but for safety) */ 962 1.15.4.2 rpaulo if (ump->anchors[0] == NULL) 963 1.15.4.2 rpaulo return EINVAL; 964 1.15.4.2 rpaulo 965 1.15.4.2 rpaulo /* we need at least one primary and one logical volume descriptor */ 966 1.15.4.2 rpaulo if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 967 1.15.4.2 rpaulo return EINVAL; 968 1.15.4.2 rpaulo 969 1.15.4.2 rpaulo /* we need at least one partition descriptor */ 970 1.15.4.2 rpaulo if (ump->partitions[0] == NULL) 971 1.15.4.2 rpaulo return EINVAL; 972 1.15.4.2 rpaulo 973 1.15.4.2 rpaulo /* check logical volume sector size verses device sector size */ 974 1.15.4.2 rpaulo if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 975 1.15.4.2 rpaulo printf("UDF mount: format violation, lb_size != sector size\n"); 976 1.15.4.2 rpaulo return EINVAL; 977 1.15.4.2 rpaulo } 978 1.15.4.2 rpaulo 979 1.15.4.2 rpaulo domain_name = ump->logical_vol->domain_id.id; 980 1.15.4.2 rpaulo if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 981 1.15.4.2 rpaulo printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 982 1.15.4.2 rpaulo return EINVAL; 983 1.15.4.2 rpaulo } 984 1.15.4.2 rpaulo 985 1.15.4.2 rpaulo /* retrieve logical volume integrity sequence */ 986 1.15.4.2 rpaulo error = udf_retrieve_lvint(ump, &ump->logvol_integrity); 987 1.15.4.2 rpaulo 988 1.15.4.2 rpaulo /* 989 1.15.4.2 rpaulo * We need at least one logvol integrity descriptor recorded. Note 990 1.15.4.2 rpaulo * that its OK to have an open logical volume integrity here. The VAT 991 1.15.4.2 rpaulo * will close/update the integrity. 992 1.15.4.2 rpaulo */ 993 1.15.4.2 rpaulo if (ump->logvol_integrity == NULL) 994 1.15.4.2 rpaulo return EINVAL; 995 1.15.4.2 rpaulo 996 1.15.4.2 rpaulo /* process derived structures */ 997 1.15.4.2 rpaulo n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 998 1.15.4.2 rpaulo lvint = ump->logvol_integrity; 999 1.15.4.2 rpaulo lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1000 1.15.4.2 rpaulo ump->logvol_info = lvinfo; 1001 1.15.4.2 rpaulo 1002 1.15.4.2 rpaulo /* TODO check udf versions? */ 1003 1.15.4.2 rpaulo 1004 1.15.4.2 rpaulo /* 1005 1.15.4.2 rpaulo * check logvol mappings: effective virt->log partmap translation 1006 1.15.4.2 rpaulo * check and recording of the mapping results. Saves expensive 1007 1.15.4.2 rpaulo * strncmp() in tight places. 1008 1.15.4.2 rpaulo */ 1009 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1010 1.15.4.2 rpaulo n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1011 1.15.4.2 rpaulo mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1012 1.15.4.2 rpaulo pmap_pos = ump->logical_vol->maps; 1013 1.15.4.2 rpaulo 1014 1.15.4.2 rpaulo if (n_pm > UDF_PMAPS) { 1015 1.15.4.2 rpaulo printf("UDF mount: too many mappings\n"); 1016 1.15.4.2 rpaulo return EINVAL; 1017 1.15.4.2 rpaulo } 1018 1.15.4.2 rpaulo 1019 1.15.4.2 rpaulo n_phys = n_virt = n_spar = n_meta = 0; 1020 1.15.4.2 rpaulo for (log_part = 0; log_part < n_pm; log_part++) { 1021 1.15.4.2 rpaulo mapping = (union udf_pmap *) pmap_pos; 1022 1.15.4.2 rpaulo pmap_stype = pmap_pos[0]; 1023 1.15.4.2 rpaulo pmap_size = pmap_pos[1]; 1024 1.15.4.2 rpaulo switch (pmap_stype) { 1025 1.15.4.2 rpaulo case 1: /* physical mapping */ 1026 1.15.4.2 rpaulo /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1027 1.15.4.2 rpaulo phys_part = udf_rw16(mapping->pm1.part_num); 1028 1.15.4.2 rpaulo pmap_type = UDF_VTOP_TYPE_PHYS; 1029 1.15.4.2 rpaulo n_phys++; 1030 1.15.4.2 rpaulo break; 1031 1.15.4.2 rpaulo case 2: /* virtual/sparable/meta mapping */ 1032 1.15.4.2 rpaulo map_name = mapping->pm2.part_id.id; 1033 1.15.4.2 rpaulo /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1034 1.15.4.2 rpaulo phys_part = udf_rw16(mapping->pm2.part_num); 1035 1.15.4.2 rpaulo pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1036 1.15.4.2 rpaulo len = UDF_REGID_ID_SIZE; 1037 1.15.4.2 rpaulo 1038 1.15.4.2 rpaulo check_name = "*UDF Virtual Partition"; 1039 1.15.4.2 rpaulo if (strncmp(map_name, check_name, len) == 0) { 1040 1.15.4.2 rpaulo pmap_type = UDF_VTOP_TYPE_VIRT; 1041 1.15.4.2 rpaulo n_virt++; 1042 1.15.4.2 rpaulo break; 1043 1.15.4.2 rpaulo } 1044 1.15.4.2 rpaulo check_name = "*UDF Sparable Partition"; 1045 1.15.4.2 rpaulo if (strncmp(map_name, check_name, len) == 0) { 1046 1.15.4.2 rpaulo pmap_type = UDF_VTOP_TYPE_SPARABLE; 1047 1.15.4.2 rpaulo n_spar++; 1048 1.15.4.2 rpaulo break; 1049 1.15.4.2 rpaulo } 1050 1.15.4.2 rpaulo check_name = "*UDF Metadata Partition"; 1051 1.15.4.2 rpaulo if (strncmp(map_name, check_name, len) == 0) { 1052 1.15.4.2 rpaulo pmap_type = UDF_VTOP_TYPE_META; 1053 1.15.4.2 rpaulo n_meta++; 1054 1.15.4.2 rpaulo break; 1055 1.15.4.2 rpaulo } 1056 1.15.4.2 rpaulo break; 1057 1.15.4.2 rpaulo default: 1058 1.15.4.2 rpaulo return EINVAL; 1059 1.15.4.2 rpaulo } 1060 1.15.4.2 rpaulo 1061 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("\t%d -> %d type %d\n", log_part, phys_part, 1062 1.15.4.2 rpaulo pmap_type)); 1063 1.15.4.2 rpaulo if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1064 1.15.4.2 rpaulo return EINVAL; 1065 1.15.4.2 rpaulo 1066 1.15.4.2 rpaulo ump->vtop [log_part] = phys_part; 1067 1.15.4.2 rpaulo ump->vtop_tp[log_part] = pmap_type; 1068 1.15.4.2 rpaulo 1069 1.15.4.2 rpaulo pmap_pos += pmap_size; 1070 1.15.4.2 rpaulo } 1071 1.15.4.2 rpaulo /* not winning the beauty contest */ 1072 1.15.4.2 rpaulo ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1073 1.15.4.2 rpaulo 1074 1.15.4.2 rpaulo /* test some basic UDF assertions/requirements */ 1075 1.15.4.2 rpaulo if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1076 1.15.4.2 rpaulo return EINVAL; 1077 1.15.4.2 rpaulo 1078 1.15.4.2 rpaulo if (n_virt) { 1079 1.15.4.2 rpaulo if ((n_phys == 0) || n_spar || n_meta) 1080 1.15.4.2 rpaulo return EINVAL; 1081 1.15.4.2 rpaulo } 1082 1.15.4.2 rpaulo if (n_spar + n_phys == 0) 1083 1.15.4.2 rpaulo return EINVAL; 1084 1.15.4.2 rpaulo 1085 1.15.4.2 rpaulo /* vat's can only be on a sequential media */ 1086 1.15.4.2 rpaulo ump->data_alloc = UDF_ALLOC_SPACEMAP; 1087 1.15.4.2 rpaulo if (n_virt) 1088 1.15.4.2 rpaulo ump->data_alloc = UDF_ALLOC_SEQUENTIAL; 1089 1.15.4.2 rpaulo 1090 1.15.4.2 rpaulo ump->meta_alloc = UDF_ALLOC_SPACEMAP; 1091 1.15.4.2 rpaulo if (n_virt) 1092 1.15.4.2 rpaulo ump->meta_alloc = UDF_ALLOC_VAT; 1093 1.15.4.2 rpaulo if (n_meta) 1094 1.15.4.2 rpaulo ump->meta_alloc = UDF_ALLOC_METABITMAP; 1095 1.15.4.2 rpaulo 1096 1.15.4.2 rpaulo /* special cases for pseudo-overwrite */ 1097 1.15.4.2 rpaulo if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1098 1.15.4.2 rpaulo ump->data_alloc = UDF_ALLOC_SEQUENTIAL; 1099 1.15.4.2 rpaulo if (n_meta) { 1100 1.15.4.2 rpaulo ump->meta_alloc = UDF_ALLOC_METASEQUENTIAL; 1101 1.15.4.2 rpaulo } else { 1102 1.15.4.2 rpaulo ump->meta_alloc = UDF_ALLOC_RELAXEDSEQUENTIAL; 1103 1.15.4.2 rpaulo } 1104 1.15.4.2 rpaulo } 1105 1.15.4.2 rpaulo 1106 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("\tdata alloc scheme %d, meta alloc scheme %d\n", 1107 1.15.4.2 rpaulo ump->data_alloc, ump->meta_alloc)); 1108 1.15.4.2 rpaulo /* TODO determine partitions to write data and metadata ? */ 1109 1.15.4.2 rpaulo 1110 1.15.4.2 rpaulo /* signal its OK for now */ 1111 1.15.4.2 rpaulo return 0; 1112 1.15.4.2 rpaulo } 1113 1.15.4.2 rpaulo 1114 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1115 1.15.4.2 rpaulo 1116 1.15.4.2 rpaulo /* 1117 1.15.4.2 rpaulo * Read in complete VAT file and check if its indeed a VAT file descriptor 1118 1.15.4.2 rpaulo */ 1119 1.15.4.2 rpaulo 1120 1.15.4.2 rpaulo static int 1121 1.15.4.2 rpaulo udf_check_for_vat(struct udf_node *vat_node) 1122 1.15.4.2 rpaulo { 1123 1.15.4.2 rpaulo struct udf_mount *ump; 1124 1.15.4.2 rpaulo struct icb_tag *icbtag; 1125 1.15.4.2 rpaulo struct timestamp *mtime; 1126 1.15.4.2 rpaulo struct regid *regid; 1127 1.15.4.2 rpaulo struct udf_vat *vat; 1128 1.15.4.2 rpaulo struct udf_logvol_info *lvinfo; 1129 1.15.4.2 rpaulo uint32_t vat_length, alloc_length; 1130 1.15.4.2 rpaulo uint32_t vat_offset, vat_entries; 1131 1.15.4.2 rpaulo uint32_t sector_size; 1132 1.15.4.2 rpaulo uint32_t sectors; 1133 1.15.4.2 rpaulo uint32_t *raw_vat; 1134 1.15.4.2 rpaulo char *regid_name; 1135 1.15.4.2 rpaulo int filetype; 1136 1.15.4.2 rpaulo int error; 1137 1.15.4.2 rpaulo 1138 1.15.4.2 rpaulo /* vat_length is really 64 bits though impossible */ 1139 1.15.4.2 rpaulo 1140 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Checking for VAT\n")); 1141 1.15.4.2 rpaulo if (!vat_node) 1142 1.15.4.2 rpaulo return ENOENT; 1143 1.15.4.2 rpaulo 1144 1.15.4.2 rpaulo /* get mount info */ 1145 1.15.4.2 rpaulo ump = vat_node->ump; 1146 1.15.4.2 rpaulo 1147 1.15.4.2 rpaulo /* check assertions */ 1148 1.15.4.2 rpaulo assert(vat_node->fe || vat_node->efe); 1149 1.15.4.2 rpaulo assert(ump->logvol_integrity); 1150 1.15.4.2 rpaulo 1151 1.15.4.2 rpaulo /* get information from fe/efe */ 1152 1.15.4.2 rpaulo if (vat_node->fe) { 1153 1.15.4.2 rpaulo vat_length = udf_rw64(vat_node->fe->inf_len); 1154 1.15.4.2 rpaulo icbtag = &vat_node->fe->icbtag; 1155 1.15.4.2 rpaulo mtime = &vat_node->fe->mtime; 1156 1.15.4.2 rpaulo } else { 1157 1.15.4.2 rpaulo vat_length = udf_rw64(vat_node->efe->inf_len); 1158 1.15.4.2 rpaulo icbtag = &vat_node->efe->icbtag; 1159 1.15.4.2 rpaulo mtime = &vat_node->efe->mtime; 1160 1.15.4.2 rpaulo } 1161 1.15.4.2 rpaulo 1162 1.15.4.2 rpaulo /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 1163 1.15.4.2 rpaulo filetype = icbtag->file_type; 1164 1.15.4.2 rpaulo if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 1165 1.15.4.2 rpaulo return ENOENT; 1166 1.15.4.2 rpaulo 1167 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 1168 1.15.4.2 rpaulo /* place a sanity check on the length; currently 1Mb in size */ 1169 1.15.4.2 rpaulo if (vat_length > 1*1024*1024) 1170 1.15.4.2 rpaulo return ENOENT; 1171 1.15.4.2 rpaulo 1172 1.15.4.2 rpaulo /* get sector size */ 1173 1.15.4.2 rpaulo sector_size = vat_node->ump->discinfo.sector_size; 1174 1.15.4.2 rpaulo 1175 1.15.4.2 rpaulo /* calculate how many sectors to read in and how much to allocate */ 1176 1.15.4.2 rpaulo sectors = (vat_length + sector_size -1) / sector_size; 1177 1.15.4.2 rpaulo alloc_length = (sectors + 2) * sector_size; 1178 1.15.4.2 rpaulo 1179 1.15.4.2 rpaulo /* try to allocate the space */ 1180 1.15.4.2 rpaulo ump->vat_table_alloc_length = alloc_length; 1181 1.15.4.2 rpaulo ump->vat_table = malloc(alloc_length, M_UDFMNT, M_CANFAIL | M_WAITOK); 1182 1.15.4.2 rpaulo if (!ump->vat_table) 1183 1.15.4.2 rpaulo return ENOMEM; /* impossible to allocate */ 1184 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("\talloced fine\n")); 1185 1.15.4.2 rpaulo 1186 1.15.4.2 rpaulo /* read it in! */ 1187 1.15.4.2 rpaulo raw_vat = (uint32_t *) ump->vat_table; 1188 1.15.4.2 rpaulo error = udf_read_file_extent(vat_node, 0, sectors, (uint8_t *) raw_vat); 1189 1.15.4.2 rpaulo if (error) { 1190 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("\tread failed : %d\n", error)); 1191 1.15.4.2 rpaulo /* not completely readable... :( bomb out */ 1192 1.15.4.2 rpaulo free(ump->vat_table, M_UDFMNT); 1193 1.15.4.2 rpaulo ump->vat_table = NULL; 1194 1.15.4.2 rpaulo return error; 1195 1.15.4.2 rpaulo } 1196 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("VAT read in fine!\n")); 1197 1.15.4.2 rpaulo 1198 1.15.4.2 rpaulo /* 1199 1.15.4.2 rpaulo * check contents of the file if its the old 1.50 VAT table format. 1200 1.15.4.2 rpaulo * Its notoriously broken and allthough some implementations support an 1201 1.15.4.2 rpaulo * extention as defined in the UDF 1.50 errata document, its doubtfull 1202 1.15.4.2 rpaulo * to be useable since a lot of implementations don't maintain it. 1203 1.15.4.2 rpaulo */ 1204 1.15.4.2 rpaulo lvinfo = ump->logvol_info; 1205 1.15.4.2 rpaulo 1206 1.15.4.2 rpaulo if (filetype == 0) { 1207 1.15.4.2 rpaulo /* definition */ 1208 1.15.4.2 rpaulo vat_offset = 0; 1209 1.15.4.2 rpaulo vat_entries = (vat_length-36)/4; 1210 1.15.4.2 rpaulo 1211 1.15.4.2 rpaulo /* check 1.50 VAT */ 1212 1.15.4.2 rpaulo regid = (struct regid *) (raw_vat + vat_entries); 1213 1.15.4.2 rpaulo regid_name = (char *) regid->id; 1214 1.15.4.2 rpaulo error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 1215 1.15.4.2 rpaulo if (error) { 1216 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 1217 1.15.4.2 rpaulo free(ump->vat_table, M_UDFMNT); 1218 1.15.4.2 rpaulo ump->vat_table = NULL; 1219 1.15.4.2 rpaulo return ENOENT; 1220 1.15.4.2 rpaulo } 1221 1.15.4.2 rpaulo /* TODO update LVID from "*UDF VAT LVExtension" ext. attr. */ 1222 1.15.4.2 rpaulo } else { 1223 1.15.4.2 rpaulo vat = (struct udf_vat *) raw_vat; 1224 1.15.4.2 rpaulo 1225 1.15.4.2 rpaulo /* definition */ 1226 1.15.4.2 rpaulo vat_offset = vat->header_len; 1227 1.15.4.2 rpaulo vat_entries = (vat_length - vat_offset)/4; 1228 1.15.4.2 rpaulo 1229 1.15.4.2 rpaulo assert(lvinfo); 1230 1.15.4.2 rpaulo lvinfo->num_files = vat->num_files; 1231 1.15.4.2 rpaulo lvinfo->num_directories = vat->num_directories; 1232 1.15.4.2 rpaulo lvinfo->min_udf_readver = vat->min_udf_readver; 1233 1.15.4.2 rpaulo lvinfo->min_udf_writever = vat->min_udf_writever; 1234 1.15.4.2 rpaulo lvinfo->max_udf_writever = vat->max_udf_writever; 1235 1.15.4.2 rpaulo } 1236 1.15.4.2 rpaulo 1237 1.15.4.2 rpaulo ump->vat_offset = vat_offset; 1238 1.15.4.2 rpaulo ump->vat_entries = vat_entries; 1239 1.15.4.2 rpaulo 1240 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 1241 1.15.4.2 rpaulo ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 1242 1.15.4.2 rpaulo ump->logvol_integrity->time = *mtime; 1243 1.15.4.2 rpaulo 1244 1.15.4.2 rpaulo return 0; /* success! */ 1245 1.15.4.2 rpaulo } 1246 1.15.4.2 rpaulo 1247 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1248 1.15.4.2 rpaulo 1249 1.15.4.2 rpaulo static int 1250 1.15.4.2 rpaulo udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 1251 1.15.4.2 rpaulo { 1252 1.15.4.2 rpaulo struct udf_node *vat_node; 1253 1.15.4.2 rpaulo struct long_ad icb_loc; 1254 1.15.4.2 rpaulo uint32_t early_vat_loc, late_vat_loc, vat_loc; 1255 1.15.4.2 rpaulo int error; 1256 1.15.4.2 rpaulo 1257 1.15.4.2 rpaulo /* mapping info not needed */ 1258 1.15.4.2 rpaulo mapping = mapping; 1259 1.15.4.2 rpaulo 1260 1.15.4.2 rpaulo vat_loc = ump->last_possible_vat_location; 1261 1.15.4.2 rpaulo early_vat_loc = vat_loc - 2 * ump->discinfo.blockingnr; 1262 1.15.4.2 rpaulo early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 1263 1.15.4.2 rpaulo late_vat_loc = vat_loc + 1024; 1264 1.15.4.2 rpaulo 1265 1.15.4.2 rpaulo /* TODO first search last sector? */ 1266 1.15.4.2 rpaulo do { 1267 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 1268 1.15.4.2 rpaulo icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 1269 1.15.4.2 rpaulo icb_loc.loc.lb_num = udf_rw32(vat_loc); 1270 1.15.4.2 rpaulo 1271 1.15.4.2 rpaulo error = udf_get_node(ump, &icb_loc, &vat_node); 1272 1.15.4.2 rpaulo if (!error) error = udf_check_for_vat(vat_node); 1273 1.15.4.2 rpaulo if (!error) break; 1274 1.15.4.2 rpaulo if (vat_node) { 1275 1.15.4.2 rpaulo vput(vat_node->vnode); 1276 1.15.4.2 rpaulo udf_dispose_node(vat_node); 1277 1.15.4.2 rpaulo } 1278 1.15.4.2 rpaulo vat_loc--; /* walk backwards */ 1279 1.15.4.2 rpaulo } while (vat_loc >= early_vat_loc); 1280 1.15.4.2 rpaulo 1281 1.15.4.2 rpaulo /* we don't need our VAT node anymore */ 1282 1.15.4.2 rpaulo if (vat_node) { 1283 1.15.4.2 rpaulo vput(vat_node->vnode); 1284 1.15.4.2 rpaulo udf_dispose_node(vat_node); 1285 1.15.4.2 rpaulo } 1286 1.15.4.2 rpaulo 1287 1.15.4.2 rpaulo return error; 1288 1.15.4.2 rpaulo } 1289 1.15.4.2 rpaulo 1290 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1291 1.15.4.2 rpaulo 1292 1.15.4.2 rpaulo static int 1293 1.15.4.2 rpaulo udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 1294 1.15.4.2 rpaulo { 1295 1.15.4.2 rpaulo union dscrptr *dscr; 1296 1.15.4.2 rpaulo struct part_map_spare *pms = (struct part_map_spare *) mapping; 1297 1.15.4.2 rpaulo uint32_t lb_num; 1298 1.15.4.2 rpaulo int spar, error; 1299 1.15.4.2 rpaulo 1300 1.15.4.2 rpaulo /* 1301 1.15.4.2 rpaulo * The partition mapping passed on to us specifies the information we 1302 1.15.4.2 rpaulo * need to locate and initialise the sparable partition mapping 1303 1.15.4.2 rpaulo * information we need. 1304 1.15.4.2 rpaulo */ 1305 1.15.4.2 rpaulo 1306 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Read sparable table\n")); 1307 1.15.4.2 rpaulo ump->sparable_packet_len = udf_rw16(pms->packet_len); 1308 1.15.4.2 rpaulo for (spar = 0; spar < pms->n_st; spar++) { 1309 1.15.4.2 rpaulo lb_num = pms->st_loc[spar]; 1310 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 1311 1.15.4.2 rpaulo error = udf_read_descriptor(ump, lb_num, M_UDFVOLD, &dscr); 1312 1.15.4.2 rpaulo if (!error && dscr) { 1313 1.15.4.2 rpaulo if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 1314 1.15.4.2 rpaulo if (ump->sparing_table) 1315 1.15.4.2 rpaulo free(ump->sparing_table, M_UDFVOLD); 1316 1.15.4.2 rpaulo ump->sparing_table = &dscr->spt; 1317 1.15.4.2 rpaulo dscr = NULL; 1318 1.15.4.2 rpaulo DPRINTF(VOLUMES, 1319 1.15.4.2 rpaulo ("Sparing table accepted (%d entries)\n", 1320 1.15.4.2 rpaulo udf_rw16(ump->sparing_table->rt_l))); 1321 1.15.4.2 rpaulo break; /* we're done */ 1322 1.15.4.2 rpaulo } 1323 1.15.4.2 rpaulo } 1324 1.15.4.2 rpaulo if (dscr) 1325 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 1326 1.15.4.2 rpaulo } 1327 1.15.4.2 rpaulo 1328 1.15.4.2 rpaulo if (ump->sparing_table) 1329 1.15.4.2 rpaulo return 0; 1330 1.15.4.2 rpaulo 1331 1.15.4.2 rpaulo return ENOENT; 1332 1.15.4.2 rpaulo } 1333 1.15.4.2 rpaulo 1334 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1335 1.15.4.2 rpaulo 1336 1.15.4.2 rpaulo int 1337 1.15.4.2 rpaulo udf_read_vds_tables(struct udf_mount *ump, struct udf_args *args) 1338 1.15.4.2 rpaulo { 1339 1.15.4.2 rpaulo union udf_pmap *mapping; 1340 1.15.4.2 rpaulo uint32_t n_pm, mt_l; 1341 1.15.4.2 rpaulo uint32_t log_part; 1342 1.15.4.2 rpaulo uint8_t *pmap_pos; 1343 1.15.4.2 rpaulo int pmap_size; 1344 1.15.4.2 rpaulo int error; 1345 1.15.4.2 rpaulo 1346 1.15.4.2 rpaulo /* We have to iterate again over the part mappings for locations */ 1347 1.15.4.2 rpaulo n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1348 1.15.4.2 rpaulo mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1349 1.15.4.2 rpaulo pmap_pos = ump->logical_vol->maps; 1350 1.15.4.2 rpaulo 1351 1.15.4.2 rpaulo for (log_part = 0; log_part < n_pm; log_part++) { 1352 1.15.4.2 rpaulo mapping = (union udf_pmap *) pmap_pos; 1353 1.15.4.2 rpaulo switch (ump->vtop_tp[log_part]) { 1354 1.15.4.2 rpaulo case UDF_VTOP_TYPE_PHYS : 1355 1.15.4.2 rpaulo /* nothing */ 1356 1.15.4.2 rpaulo break; 1357 1.15.4.2 rpaulo case UDF_VTOP_TYPE_VIRT : 1358 1.15.4.2 rpaulo /* search and load VAT */ 1359 1.15.4.2 rpaulo error = udf_search_vat(ump, mapping); 1360 1.15.4.2 rpaulo if (error) 1361 1.15.4.2 rpaulo return ENOENT; 1362 1.15.4.2 rpaulo break; 1363 1.15.4.2 rpaulo case UDF_VTOP_TYPE_SPARABLE : 1364 1.15.4.2 rpaulo /* load one of the sparable tables */ 1365 1.15.4.2 rpaulo error = udf_read_sparables(ump, mapping); 1366 1.15.4.2 rpaulo break; 1367 1.15.4.2 rpaulo case UDF_VTOP_TYPE_META : 1368 1.15.4.2 rpaulo /* TODO load metafile and metabitmapfile FE/EFEs */ 1369 1.15.4.2 rpaulo break; 1370 1.15.4.2 rpaulo default: 1371 1.15.4.2 rpaulo break; 1372 1.15.4.2 rpaulo } 1373 1.15.4.2 rpaulo pmap_size = pmap_pos[1]; 1374 1.15.4.2 rpaulo pmap_pos += pmap_size; 1375 1.15.4.2 rpaulo } 1376 1.15.4.2 rpaulo 1377 1.15.4.2 rpaulo return 0; 1378 1.15.4.2 rpaulo } 1379 1.15.4.2 rpaulo 1380 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1381 1.15.4.2 rpaulo 1382 1.15.4.2 rpaulo int 1383 1.15.4.2 rpaulo udf_read_rootdirs(struct udf_mount *ump, struct udf_args *args) 1384 1.15.4.2 rpaulo { 1385 1.15.4.2 rpaulo struct udf_node *rootdir_node, *streamdir_node; 1386 1.15.4.2 rpaulo union dscrptr *dscr; 1387 1.15.4.2 rpaulo struct long_ad fsd_loc, *dir_loc; 1388 1.15.4.2 rpaulo uint32_t lb_num, dummy; 1389 1.15.4.2 rpaulo uint32_t fsd_len; 1390 1.15.4.2 rpaulo int dscr_type; 1391 1.15.4.2 rpaulo int error; 1392 1.15.4.2 rpaulo 1393 1.15.4.2 rpaulo /* TODO implement FSD reading in seperate function like integrity? */ 1394 1.15.4.2 rpaulo /* get fileset descriptor sequence */ 1395 1.15.4.2 rpaulo fsd_loc = ump->logical_vol->lv_fsd_loc; 1396 1.15.4.2 rpaulo fsd_len = udf_rw32(fsd_loc.len); 1397 1.15.4.2 rpaulo 1398 1.15.4.2 rpaulo dscr = NULL; 1399 1.15.4.2 rpaulo error = 0; 1400 1.15.4.2 rpaulo while (fsd_len || error) { 1401 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 1402 1.15.4.2 rpaulo /* translate fsd_loc to lb_num */ 1403 1.15.4.2 rpaulo error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 1404 1.15.4.2 rpaulo if (error) 1405 1.15.4.2 rpaulo break; 1406 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 1407 1.15.4.2 rpaulo error = udf_read_descriptor(ump, lb_num, M_UDFVOLD, &dscr); 1408 1.15.4.2 rpaulo /* end markers */ 1409 1.15.4.2 rpaulo if (error || (dscr == NULL)) 1410 1.15.4.2 rpaulo break; 1411 1.15.4.2 rpaulo 1412 1.15.4.2 rpaulo /* analyse */ 1413 1.15.4.2 rpaulo dscr_type = udf_rw16(dscr->tag.id); 1414 1.15.4.2 rpaulo if (dscr_type == TAGID_TERM) 1415 1.15.4.2 rpaulo break; 1416 1.15.4.2 rpaulo if (dscr_type != TAGID_FSD) { 1417 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 1418 1.15.4.2 rpaulo return ENOENT; 1419 1.15.4.2 rpaulo } 1420 1.15.4.2 rpaulo 1421 1.15.4.2 rpaulo /* 1422 1.15.4.2 rpaulo * TODO check for multiple fileset descriptors; its only 1423 1.15.4.2 rpaulo * picking the last now. Also check for FSD 1424 1.15.4.2 rpaulo * correctness/interpretability 1425 1.15.4.2 rpaulo */ 1426 1.15.4.2 rpaulo 1427 1.15.4.2 rpaulo /* update */ 1428 1.15.4.2 rpaulo if (ump->fileset_desc) { 1429 1.15.4.2 rpaulo free(ump->fileset_desc, M_UDFVOLD); 1430 1.15.4.2 rpaulo } 1431 1.15.4.2 rpaulo ump->fileset_desc = &dscr->fsd; 1432 1.15.4.2 rpaulo dscr = NULL; 1433 1.15.4.2 rpaulo 1434 1.15.4.2 rpaulo /* continue to the next fsd */ 1435 1.15.4.2 rpaulo fsd_len -= ump->discinfo.sector_size; 1436 1.15.4.2 rpaulo fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 1437 1.15.4.2 rpaulo 1438 1.15.4.2 rpaulo /* follow up to fsd->next_ex (long_ad) if its not null */ 1439 1.15.4.2 rpaulo if (udf_rw32(ump->fileset_desc->next_ex.len)) { 1440 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("follow up FSD extent\n")); 1441 1.15.4.2 rpaulo fsd_loc = ump->fileset_desc->next_ex; 1442 1.15.4.2 rpaulo fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 1443 1.15.4.2 rpaulo } 1444 1.15.4.2 rpaulo } 1445 1.15.4.2 rpaulo if (dscr) 1446 1.15.4.2 rpaulo free(dscr, M_UDFVOLD); 1447 1.15.4.2 rpaulo 1448 1.15.4.2 rpaulo /* there has to be one */ 1449 1.15.4.2 rpaulo if (ump->fileset_desc == NULL) 1450 1.15.4.2 rpaulo return ENOENT; 1451 1.15.4.2 rpaulo 1452 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("FSD read in fine\n")); 1453 1.15.4.2 rpaulo 1454 1.15.4.2 rpaulo /* 1455 1.15.4.2 rpaulo * Now the FSD is known, read in the rootdirectory and if one exists, 1456 1.15.4.2 rpaulo * the system stream dir. Some files in the system streamdir are not 1457 1.15.4.2 rpaulo * wanted in this implementation since they are not maintained. If 1458 1.15.4.2 rpaulo * writing is enabled we'll delete these files if they exist. 1459 1.15.4.2 rpaulo */ 1460 1.15.4.2 rpaulo 1461 1.15.4.2 rpaulo rootdir_node = streamdir_node = NULL; 1462 1.15.4.2 rpaulo dir_loc = NULL; 1463 1.15.4.2 rpaulo 1464 1.15.4.2 rpaulo /* try to read in the rootdir */ 1465 1.15.4.2 rpaulo dir_loc = &ump->fileset_desc->rootdir_icb; 1466 1.15.4.2 rpaulo error = udf_get_node(ump, dir_loc, &rootdir_node); 1467 1.15.4.2 rpaulo if (error) 1468 1.15.4.2 rpaulo return ENOENT; 1469 1.15.4.2 rpaulo 1470 1.15.4.2 rpaulo /* aparently it read in fine */ 1471 1.15.4.2 rpaulo 1472 1.15.4.2 rpaulo /* 1473 1.15.4.2 rpaulo * Try the system stream directory; not very likely in the ones we 1474 1.15.4.2 rpaulo * test, but for completeness. 1475 1.15.4.2 rpaulo */ 1476 1.15.4.2 rpaulo dir_loc = &ump->fileset_desc->streamdir_icb; 1477 1.15.4.2 rpaulo if (udf_rw32(dir_loc->len)) { 1478 1.15.4.2 rpaulo error = udf_get_node(ump, dir_loc, &streamdir_node); 1479 1.15.4.2 rpaulo if (error) 1480 1.15.4.2 rpaulo printf("udf mount: streamdir defined but ignored\n"); 1481 1.15.4.2 rpaulo if (!error) { 1482 1.15.4.2 rpaulo /* 1483 1.15.4.2 rpaulo * TODO process streamdir `baddies' i.e. files we dont 1484 1.15.4.2 rpaulo * want if R/W 1485 1.15.4.2 rpaulo */ 1486 1.15.4.2 rpaulo } 1487 1.15.4.2 rpaulo } 1488 1.15.4.2 rpaulo 1489 1.15.4.2 rpaulo DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 1490 1.15.4.2 rpaulo 1491 1.15.4.2 rpaulo /* release the vnodes again; they'll be auto-recycled later */ 1492 1.15.4.2 rpaulo if (streamdir_node) { 1493 1.15.4.2 rpaulo vput(streamdir_node->vnode); 1494 1.15.4.2 rpaulo } 1495 1.15.4.2 rpaulo if (rootdir_node) { 1496 1.15.4.2 rpaulo vput(rootdir_node->vnode); 1497 1.15.4.2 rpaulo } 1498 1.15.4.2 rpaulo 1499 1.15.4.2 rpaulo return 0; 1500 1.15.4.2 rpaulo } 1501 1.15.4.2 rpaulo 1502 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1503 1.15.4.2 rpaulo 1504 1.15.4.2 rpaulo int 1505 1.15.4.2 rpaulo udf_translate_vtop(struct udf_mount *ump, struct long_ad *icb_loc, 1506 1.15.4.2 rpaulo uint32_t *lb_numres, uint32_t *extres) 1507 1.15.4.2 rpaulo { 1508 1.15.4.2 rpaulo struct part_desc *pdesc; 1509 1.15.4.2 rpaulo struct spare_map_entry *sme; 1510 1.15.4.2 rpaulo uint32_t *trans; 1511 1.15.4.2 rpaulo uint32_t lb_num, lb_rel, lb_packet; 1512 1.15.4.2 rpaulo int rel, vpart, part; 1513 1.15.4.2 rpaulo 1514 1.15.4.2 rpaulo assert(ump && icb_loc && lb_numres); 1515 1.15.4.2 rpaulo 1516 1.15.4.2 rpaulo vpart = udf_rw16(icb_loc->loc.part_num); 1517 1.15.4.2 rpaulo lb_num = udf_rw32(icb_loc->loc.lb_num); 1518 1.15.4.2 rpaulo if (vpart < 0 || vpart > UDF_VTOP_RAWPART) 1519 1.15.4.2 rpaulo return EINVAL; 1520 1.15.4.2 rpaulo 1521 1.15.4.2 rpaulo switch (ump->vtop_tp[vpart]) { 1522 1.15.4.2 rpaulo case UDF_VTOP_TYPE_RAW : 1523 1.15.4.2 rpaulo /* 1:1 to the end of the device */ 1524 1.15.4.2 rpaulo *lb_numres = lb_num; 1525 1.15.4.2 rpaulo *extres = INT_MAX; 1526 1.15.4.2 rpaulo return 0; 1527 1.15.4.2 rpaulo case UDF_VTOP_TYPE_PHYS : 1528 1.15.4.2 rpaulo /* transform into its disc logical block */ 1529 1.15.4.2 rpaulo part = ump->vtop[vpart]; 1530 1.15.4.2 rpaulo pdesc = ump->partitions[part]; 1531 1.15.4.2 rpaulo if (lb_num > udf_rw32(pdesc->part_len)) 1532 1.15.4.2 rpaulo return EINVAL; 1533 1.15.4.2 rpaulo *lb_numres = lb_num + udf_rw32(pdesc->start_loc); 1534 1.15.4.2 rpaulo 1535 1.15.4.2 rpaulo /* extent from here to the end of the partition */ 1536 1.15.4.2 rpaulo *extres = udf_rw32(pdesc->part_len) - lb_num; 1537 1.15.4.2 rpaulo return 0; 1538 1.15.4.2 rpaulo case UDF_VTOP_TYPE_VIRT : 1539 1.15.4.2 rpaulo /* only maps one sector, lookup in VAT */ 1540 1.15.4.2 rpaulo if (lb_num >= ump->vat_entries) /* XXX > or >= ? */ 1541 1.15.4.2 rpaulo return EINVAL; 1542 1.15.4.2 rpaulo 1543 1.15.4.2 rpaulo /* lookup in virtual allocation table */ 1544 1.15.4.2 rpaulo trans = (uint32_t *) (ump->vat_table + ump->vat_offset); 1545 1.15.4.2 rpaulo lb_num = udf_rw32(trans[lb_num]); 1546 1.15.4.2 rpaulo 1547 1.15.4.2 rpaulo /* transform into its disc logical block */ 1548 1.15.4.2 rpaulo part = ump->vtop[vpart]; 1549 1.15.4.2 rpaulo pdesc = ump->partitions[part]; 1550 1.15.4.2 rpaulo if (lb_num > udf_rw32(pdesc->part_len)) 1551 1.15.4.2 rpaulo return EINVAL; 1552 1.15.4.2 rpaulo *lb_numres = lb_num + udf_rw32(pdesc->start_loc); 1553 1.15.4.2 rpaulo 1554 1.15.4.2 rpaulo /* just one logical block */ 1555 1.15.4.2 rpaulo *extres = 1; 1556 1.15.4.2 rpaulo return 0; 1557 1.15.4.2 rpaulo case UDF_VTOP_TYPE_SPARABLE : 1558 1.15.4.2 rpaulo /* check if the packet containing the lb_num is remapped */ 1559 1.15.4.2 rpaulo lb_packet = lb_num / ump->sparable_packet_len; 1560 1.15.4.2 rpaulo lb_rel = lb_num % ump->sparable_packet_len; 1561 1.15.4.2 rpaulo 1562 1.15.4.2 rpaulo for (rel = 0; rel < udf_rw16(ump->sparing_table->rt_l); rel++) { 1563 1.15.4.2 rpaulo sme = &ump->sparing_table->entries[rel]; 1564 1.15.4.2 rpaulo if (lb_packet == udf_rw32(sme->org)) { 1565 1.15.4.2 rpaulo /* NOTE maps to absolute disc logical block! */ 1566 1.15.4.2 rpaulo *lb_numres = udf_rw32(sme->map) + lb_rel; 1567 1.15.4.2 rpaulo *extres = ump->sparable_packet_len - lb_rel; 1568 1.15.4.2 rpaulo return 0; 1569 1.15.4.2 rpaulo } 1570 1.15.4.2 rpaulo } 1571 1.15.4.2 rpaulo 1572 1.15.4.2 rpaulo /* transform into its disc logical block */ 1573 1.15.4.2 rpaulo part = ump->vtop[vpart]; 1574 1.15.4.2 rpaulo pdesc = ump->partitions[part]; 1575 1.15.4.2 rpaulo if (lb_num > udf_rw32(pdesc->part_len)) 1576 1.15.4.2 rpaulo return EINVAL; 1577 1.15.4.2 rpaulo *lb_numres = lb_num + udf_rw32(pdesc->start_loc); 1578 1.15.4.2 rpaulo 1579 1.15.4.2 rpaulo /* rest of block */ 1580 1.15.4.2 rpaulo *extres = ump->sparable_packet_len - lb_rel; 1581 1.15.4.2 rpaulo return 0; 1582 1.15.4.2 rpaulo case UDF_VTOP_TYPE_META : 1583 1.15.4.2 rpaulo default: 1584 1.15.4.2 rpaulo printf("UDF vtop translation scheme %d unimplemented yet\n", 1585 1.15.4.2 rpaulo ump->vtop_tp[vpart]); 1586 1.15.4.2 rpaulo } 1587 1.15.4.2 rpaulo 1588 1.15.4.2 rpaulo return EINVAL; 1589 1.15.4.2 rpaulo } 1590 1.15.4.2 rpaulo 1591 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1592 1.15.4.2 rpaulo 1593 1.15.4.2 rpaulo /* To make absolutely sure we are NOT returning zero, add one :) */ 1594 1.15.4.2 rpaulo 1595 1.15.4.2 rpaulo long 1596 1.15.4.2 rpaulo udf_calchash(struct long_ad *icbptr) 1597 1.15.4.2 rpaulo { 1598 1.15.4.2 rpaulo /* ought to be enough since each mountpoint has its own chain */ 1599 1.15.4.2 rpaulo return udf_rw32(icbptr->loc.lb_num) + 1; 1600 1.15.4.2 rpaulo } 1601 1.15.4.2 rpaulo 1602 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1603 1.15.4.2 rpaulo 1604 1.15.4.2 rpaulo static struct udf_node * 1605 1.15.4.2 rpaulo udf_hashget(struct udf_mount *ump, struct long_ad *icbptr) 1606 1.15.4.2 rpaulo { 1607 1.15.4.2 rpaulo struct udf_node *unp; 1608 1.15.4.2 rpaulo struct vnode *vp; 1609 1.15.4.2 rpaulo uint32_t hashline; 1610 1.15.4.2 rpaulo 1611 1.15.4.2 rpaulo loop: 1612 1.15.4.2 rpaulo simple_lock(&ump->ihash_slock); 1613 1.15.4.2 rpaulo 1614 1.15.4.2 rpaulo hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 1615 1.15.4.2 rpaulo LIST_FOREACH(unp, &ump->udf_nodes[hashline], hashchain) { 1616 1.15.4.2 rpaulo assert(unp); 1617 1.15.4.2 rpaulo if (unp->loc.loc.lb_num == icbptr->loc.lb_num && 1618 1.15.4.2 rpaulo unp->loc.loc.part_num == icbptr->loc.part_num) { 1619 1.15.4.2 rpaulo vp = unp->vnode; 1620 1.15.4.2 rpaulo assert(vp); 1621 1.15.4.2 rpaulo simple_lock(&vp->v_interlock); 1622 1.15.4.2 rpaulo simple_unlock(&ump->ihash_slock); 1623 1.15.4.2 rpaulo if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 1624 1.15.4.2 rpaulo goto loop; 1625 1.15.4.2 rpaulo return unp; 1626 1.15.4.2 rpaulo } 1627 1.15.4.2 rpaulo } 1628 1.15.4.2 rpaulo simple_unlock(&ump->ihash_slock); 1629 1.15.4.2 rpaulo 1630 1.15.4.2 rpaulo return NULL; 1631 1.15.4.2 rpaulo } 1632 1.15.4.2 rpaulo 1633 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1634 1.15.4.2 rpaulo 1635 1.15.4.2 rpaulo static void 1636 1.15.4.2 rpaulo udf_hashins(struct udf_node *unp) 1637 1.15.4.2 rpaulo { 1638 1.15.4.2 rpaulo struct udf_mount *ump; 1639 1.15.4.2 rpaulo uint32_t hashline; 1640 1.15.4.2 rpaulo 1641 1.15.4.2 rpaulo ump = unp->ump; 1642 1.15.4.2 rpaulo simple_lock(&ump->ihash_slock); 1643 1.15.4.2 rpaulo 1644 1.15.4.2 rpaulo hashline = udf_calchash(&unp->loc) & UDF_INODE_HASHMASK; 1645 1.15.4.2 rpaulo LIST_INSERT_HEAD(&ump->udf_nodes[hashline], unp, hashchain); 1646 1.15.4.2 rpaulo 1647 1.15.4.2 rpaulo simple_unlock(&ump->ihash_slock); 1648 1.15.4.2 rpaulo } 1649 1.15.4.2 rpaulo 1650 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1651 1.15.4.2 rpaulo 1652 1.15.4.2 rpaulo static void 1653 1.15.4.2 rpaulo udf_hashrem(struct udf_node *unp) 1654 1.15.4.2 rpaulo { 1655 1.15.4.2 rpaulo struct udf_mount *ump; 1656 1.15.4.2 rpaulo 1657 1.15.4.2 rpaulo ump = unp->ump; 1658 1.15.4.2 rpaulo simple_lock(&ump->ihash_slock); 1659 1.15.4.2 rpaulo 1660 1.15.4.2 rpaulo LIST_REMOVE(unp, hashchain); 1661 1.15.4.2 rpaulo 1662 1.15.4.2 rpaulo simple_unlock(&ump->ihash_slock); 1663 1.15.4.2 rpaulo } 1664 1.15.4.2 rpaulo 1665 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1666 1.15.4.2 rpaulo 1667 1.15.4.2 rpaulo int 1668 1.15.4.2 rpaulo udf_dispose_locked_node(struct udf_node *node) 1669 1.15.4.2 rpaulo { 1670 1.15.4.2 rpaulo if (!node) 1671 1.15.4.2 rpaulo return 0; 1672 1.15.4.2 rpaulo if (node->vnode) 1673 1.15.4.2 rpaulo VOP_UNLOCK(node->vnode, 0); 1674 1.15.4.2 rpaulo return udf_dispose_node(node); 1675 1.15.4.2 rpaulo } 1676 1.15.4.2 rpaulo 1677 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1678 1.15.4.2 rpaulo 1679 1.15.4.2 rpaulo int 1680 1.15.4.2 rpaulo udf_dispose_node(struct udf_node *node) 1681 1.15.4.2 rpaulo { 1682 1.15.4.2 rpaulo struct vnode *vp; 1683 1.15.4.2 rpaulo 1684 1.15.4.2 rpaulo DPRINTF(NODE, ("udf_dispose_node called on node %p\n", node)); 1685 1.15.4.2 rpaulo if (!node) { 1686 1.15.4.2 rpaulo DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 1687 1.15.4.2 rpaulo return 0; 1688 1.15.4.2 rpaulo } 1689 1.15.4.2 rpaulo 1690 1.15.4.2 rpaulo vp = node->vnode; 1691 1.15.4.2 rpaulo 1692 1.15.4.2 rpaulo /* TODO extended attributes and streamdir */ 1693 1.15.4.2 rpaulo 1694 1.15.4.2 rpaulo /* remove from our hash lookup table */ 1695 1.15.4.2 rpaulo udf_hashrem(node); 1696 1.15.4.2 rpaulo 1697 1.15.4.2 rpaulo /* dissociate our udf_node from the vnode */ 1698 1.15.4.2 rpaulo vp->v_data = NULL; 1699 1.15.4.2 rpaulo 1700 1.15.4.2 rpaulo /* free associated memory and the node itself */ 1701 1.15.4.2 rpaulo if (node->fe) 1702 1.15.4.2 rpaulo pool_put(node->ump->desc_pool, node->fe); 1703 1.15.4.2 rpaulo if (node->efe) 1704 1.15.4.2 rpaulo pool_put(node->ump->desc_pool, node->efe); 1705 1.15.4.2 rpaulo pool_put(&udf_node_pool, node); 1706 1.15.4.2 rpaulo 1707 1.15.4.2 rpaulo return 0; 1708 1.15.4.2 rpaulo } 1709 1.15.4.2 rpaulo 1710 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1711 1.15.4.2 rpaulo 1712 1.15.4.2 rpaulo /* 1713 1.15.4.2 rpaulo * Genfs interfacing 1714 1.15.4.2 rpaulo * 1715 1.15.4.2 rpaulo * static const struct genfs_ops udffs_genfsops = { 1716 1.15.4.2 rpaulo * .gop_size = genfs_size, 1717 1.15.4.2 rpaulo * size of transfers 1718 1.15.4.2 rpaulo * .gop_alloc = udf_gop_alloc, 1719 1.15.4.2 rpaulo * unknown 1720 1.15.4.2 rpaulo * .gop_write = genfs_gop_write, 1721 1.15.4.2 rpaulo * putpages interface code 1722 1.15.4.2 rpaulo * .gop_markupdate = udf_gop_markupdate, 1723 1.15.4.2 rpaulo * set update/modify flags etc. 1724 1.15.4.2 rpaulo * } 1725 1.15.4.2 rpaulo */ 1726 1.15.4.2 rpaulo 1727 1.15.4.2 rpaulo /* 1728 1.15.4.2 rpaulo * Genfs interface. These four functions are the only ones defined though not 1729 1.15.4.2 rpaulo * documented... great.... why is chosen for the `.' initialisers i dont know 1730 1.15.4.2 rpaulo * but other filingsystems seem to use it this way. 1731 1.15.4.2 rpaulo */ 1732 1.15.4.2 rpaulo 1733 1.15.4.2 rpaulo static int 1734 1.15.4.2 rpaulo udf_gop_alloc(struct vnode *vp, off_t off, off_t len, int flags, 1735 1.15.4.2 rpaulo kauth_cred_t cred) 1736 1.15.4.2 rpaulo { 1737 1.15.4.2 rpaulo return 0; 1738 1.15.4.2 rpaulo } 1739 1.15.4.2 rpaulo 1740 1.15.4.2 rpaulo 1741 1.15.4.2 rpaulo static void 1742 1.15.4.2 rpaulo udf_gop_markupdate(struct vnode *vp, int flags) 1743 1.15.4.2 rpaulo { 1744 1.15.4.2 rpaulo struct udf_node *udf_node = VTOI(vp); 1745 1.15.4.2 rpaulo u_long mask; 1746 1.15.4.2 rpaulo 1747 1.15.4.2 rpaulo udf_node = udf_node; /* shut up gcc */ 1748 1.15.4.2 rpaulo 1749 1.15.4.2 rpaulo mask = 0; 1750 1.15.4.2 rpaulo #ifdef notyet 1751 1.15.4.2 rpaulo if ((flags & GOP_UPDATE_ACCESSED) != 0) { 1752 1.15.4.2 rpaulo mask = UDF_SET_ACCESS; 1753 1.15.4.2 rpaulo } 1754 1.15.4.2 rpaulo if ((flags & GOP_UPDATE_MODIFIED) != 0) { 1755 1.15.4.2 rpaulo mask |= UDF_SET_UPDATE; 1756 1.15.4.2 rpaulo } 1757 1.15.4.2 rpaulo if (mask) { 1758 1.15.4.2 rpaulo udf_node->update_flag |= mask; 1759 1.15.4.2 rpaulo } 1760 1.15.4.2 rpaulo #endif 1761 1.15.4.2 rpaulo /* msdosfs doesn't do it, but shouldn't we update the times here? */ 1762 1.15.4.2 rpaulo } 1763 1.15.4.2 rpaulo 1764 1.15.4.2 rpaulo 1765 1.15.4.2 rpaulo static const struct genfs_ops udf_genfsops = { 1766 1.15.4.2 rpaulo .gop_size = genfs_size, 1767 1.15.4.2 rpaulo .gop_alloc = udf_gop_alloc, 1768 1.15.4.2 rpaulo .gop_write = genfs_gop_write, 1769 1.15.4.2 rpaulo .gop_markupdate = udf_gop_markupdate, 1770 1.15.4.2 rpaulo }; 1771 1.15.4.2 rpaulo 1772 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 1773 1.15.4.2 rpaulo 1774 1.15.4.2 rpaulo /* 1775 1.15.4.2 rpaulo * Each node can have an attached streamdir node though not 1776 1.15.4.2 rpaulo * recursively. These are otherwise known as named substreams/named 1777 1.15.4.2 rpaulo * extended attributes that have no size limitations. 1778 1.15.4.2 rpaulo * 1779 1.15.4.2 rpaulo * `Normal' extended attributes are indicated with a number and are recorded 1780 1.15.4.2 rpaulo * in either the fe/efe descriptor itself for small descriptors or recorded in 1781 1.15.4.2 rpaulo * the attached extended attribute file. Since this file can get fragmented, 1782 1.15.4.2 rpaulo * care ought to be taken. 1783 1.15.4.2 rpaulo */ 1784 1.15.4.2 rpaulo 1785 1.15.4.2 rpaulo int 1786 1.15.4.2 rpaulo udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 1787 1.15.4.2 rpaulo struct udf_node **noderes) 1788 1.15.4.2 rpaulo { 1789 1.15.4.2 rpaulo union dscrptr *dscr, *tmpdscr; 1790 1.15.4.2 rpaulo struct udf_node *node; 1791 1.15.4.2 rpaulo struct vnode *nvp; 1792 1.15.4.2 rpaulo struct long_ad icb_loc; 1793 1.15.4.2 rpaulo extern int (**udf_vnodeop_p)(void *); 1794 1.15.4.2 rpaulo uint64_t file_size; 1795 1.15.4.2 rpaulo uint32_t lb_size, sector, dummy; 1796 1.15.4.2 rpaulo int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 1797 1.15.4.2 rpaulo int error; 1798 1.15.4.2 rpaulo 1799 1.15.4.2 rpaulo DPRINTF(NODE, ("udf_get_node called\n")); 1800 1.15.4.2 rpaulo *noderes = node = NULL; 1801 1.15.4.2 rpaulo 1802 1.15.4.2 rpaulo /* lock to disallow simultanious creation of same node */ 1803 1.15.4.2 rpaulo lockmgr(&ump->get_node_lock, LK_EXCLUSIVE, NULL); 1804 1.15.4.2 rpaulo 1805 1.15.4.2 rpaulo DPRINTF(NODE, ("\tlookup in hash table\n")); 1806 1.15.4.2 rpaulo /* lookup in hash table */ 1807 1.15.4.2 rpaulo assert(ump); 1808 1.15.4.2 rpaulo assert(node_icb_loc); 1809 1.15.4.2 rpaulo node = udf_hashget(ump, node_icb_loc); 1810 1.15.4.2 rpaulo if (node) { 1811 1.15.4.2 rpaulo DPRINTF(NODE, ("\tgot it from the hash!\n")); 1812 1.15.4.2 rpaulo /* vnode is returned locked */ 1813 1.15.4.2 rpaulo *noderes = node; 1814 1.15.4.2 rpaulo lockmgr(&ump->get_node_lock, LK_RELEASE, NULL); 1815 1.15.4.2 rpaulo return 0; 1816 1.15.4.2 rpaulo } 1817 1.15.4.2 rpaulo 1818 1.15.4.2 rpaulo /* garbage check: translate node_icb_loc to sectornr */ 1819 1.15.4.2 rpaulo error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 1820 1.15.4.2 rpaulo if (error) { 1821 1.15.4.2 rpaulo /* no use, this will fail anyway */ 1822 1.15.4.2 rpaulo lockmgr(&ump->get_node_lock, LK_RELEASE, NULL); 1823 1.15.4.2 rpaulo return EINVAL; 1824 1.15.4.2 rpaulo } 1825 1.15.4.2 rpaulo 1826 1.15.4.2 rpaulo /* build node (do initialise!) */ 1827 1.15.4.2 rpaulo node = pool_get(&udf_node_pool, PR_WAITOK); 1828 1.15.4.2 rpaulo memset(node, 0, sizeof(struct udf_node)); 1829 1.15.4.2 rpaulo 1830 1.15.4.2 rpaulo DPRINTF(NODE, ("\tget new vnode\n")); 1831 1.15.4.2 rpaulo /* give it a vnode */ 1832 1.15.4.2 rpaulo error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 1833 1.15.4.2 rpaulo if (error) { 1834 1.15.4.2 rpaulo pool_put(&udf_node_pool, node); 1835 1.15.4.2 rpaulo lockmgr(&ump->get_node_lock, LK_RELEASE, NULL); 1836 1.15.4.2 rpaulo return error; 1837 1.15.4.2 rpaulo } 1838 1.15.4.2 rpaulo 1839 1.15.4.2 rpaulo /* allways return locked vnode */ 1840 1.15.4.2 rpaulo if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 1841 1.15.4.2 rpaulo /* recycle vnode and unlock; simultanious will fail too */ 1842 1.15.4.2 rpaulo ungetnewvnode(nvp); 1843 1.15.4.2 rpaulo lockmgr(&ump->get_node_lock, LK_RELEASE, NULL); 1844 1.15.4.2 rpaulo return error; 1845 1.15.4.2 rpaulo } 1846 1.15.4.2 rpaulo 1847 1.15.4.2 rpaulo /* initialise crosslinks, note location of fe/efe for hashing */ 1848 1.15.4.2 rpaulo node->ump = ump; 1849 1.15.4.2 rpaulo node->vnode = nvp; 1850 1.15.4.2 rpaulo nvp->v_data = node; 1851 1.15.4.2 rpaulo node->loc = *node_icb_loc; 1852 1.15.4.2 rpaulo node->lockf = 0; 1853 1.15.4.2 rpaulo 1854 1.15.4.2 rpaulo /* insert into the hash lookup */ 1855 1.15.4.2 rpaulo udf_hashins(node); 1856 1.15.4.2 rpaulo 1857 1.15.4.2 rpaulo /* safe to unlock, the entry is in the hash table, vnode is locked */ 1858 1.15.4.2 rpaulo lockmgr(&ump->get_node_lock, LK_RELEASE, NULL); 1859 1.15.4.2 rpaulo 1860 1.15.4.2 rpaulo icb_loc = *node_icb_loc; 1861 1.15.4.2 rpaulo needs_indirect = 0; 1862 1.15.4.2 rpaulo strat4096 = 0; 1863 1.15.4.2 rpaulo udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 1864 1.15.4.2 rpaulo file_size = 0; 1865 1.15.4.2 rpaulo lb_size = udf_rw32(ump->logical_vol->lb_size); 1866 1.15.4.2 rpaulo 1867 1.15.4.2 rpaulo do { 1868 1.15.4.2 rpaulo error = udf_translate_vtop(ump, &icb_loc, §or, &dummy); 1869 1.15.4.2 rpaulo if (error) 1870 1.15.4.2 rpaulo break; 1871 1.15.4.2 rpaulo 1872 1.15.4.2 rpaulo /* try to read in fe/efe */ 1873 1.15.4.2 rpaulo error = udf_read_descriptor(ump, sector, M_UDFTEMP, &tmpdscr); 1874 1.15.4.2 rpaulo 1875 1.15.4.2 rpaulo /* blank sector marks end of sequence, check this */ 1876 1.15.4.2 rpaulo if ((tmpdscr == NULL) && (!strat4096)) 1877 1.15.4.2 rpaulo error = ENOENT; 1878 1.15.4.2 rpaulo 1879 1.15.4.2 rpaulo /* break if read error or blank sector */ 1880 1.15.4.2 rpaulo if (error || (tmpdscr == NULL)) 1881 1.15.4.2 rpaulo break; 1882 1.15.4.2 rpaulo 1883 1.15.4.2 rpaulo /* process descriptor based on the descriptor type */ 1884 1.15.4.2 rpaulo dscr_type = udf_rw16(tmpdscr->tag.id); 1885 1.15.4.2 rpaulo 1886 1.15.4.2 rpaulo /* if dealing with an indirect entry, follow the link */ 1887 1.15.4.2 rpaulo if (dscr_type == TAGID_INDIRECT_ENTRY) { 1888 1.15.4.2 rpaulo needs_indirect = 0; 1889 1.15.4.2 rpaulo icb_loc = tmpdscr->inde.indirect_icb; 1890 1.15.4.2 rpaulo free(tmpdscr, M_UDFTEMP); 1891 1.15.4.2 rpaulo continue; 1892 1.15.4.2 rpaulo } 1893 1.15.4.2 rpaulo 1894 1.15.4.2 rpaulo /* only file entries and extended file entries allowed here */ 1895 1.15.4.2 rpaulo if ((dscr_type != TAGID_FENTRY) && 1896 1.15.4.2 rpaulo (dscr_type != TAGID_EXTFENTRY)) { 1897 1.15.4.2 rpaulo free(tmpdscr, M_UDFTEMP); 1898 1.15.4.2 rpaulo error = ENOENT; 1899 1.15.4.2 rpaulo break; 1900 1.15.4.2 rpaulo } 1901 1.15.4.2 rpaulo 1902 1.15.4.2 rpaulo /* get descriptor space from our pool */ 1903 1.15.4.2 rpaulo KASSERT(udf_tagsize(tmpdscr, lb_size) == lb_size); 1904 1.15.4.2 rpaulo 1905 1.15.4.2 rpaulo dscr = pool_get(ump->desc_pool, PR_WAITOK); 1906 1.15.4.2 rpaulo memcpy(dscr, tmpdscr, lb_size); 1907 1.15.4.2 rpaulo free(tmpdscr, M_UDFTEMP); 1908 1.15.4.2 rpaulo 1909 1.15.4.2 rpaulo /* record and process/update (ext)fentry */ 1910 1.15.4.2 rpaulo if (dscr_type == TAGID_FENTRY) { 1911 1.15.4.2 rpaulo if (node->fe) 1912 1.15.4.2 rpaulo pool_put(ump->desc_pool, node->fe); 1913 1.15.4.2 rpaulo node->fe = &dscr->fe; 1914 1.15.4.2 rpaulo strat = udf_rw16(node->fe->icbtag.strat_type); 1915 1.15.4.2 rpaulo udf_file_type = node->fe->icbtag.file_type; 1916 1.15.4.2 rpaulo file_size = udf_rw64(node->fe->inf_len); 1917 1.15.4.2 rpaulo } else { 1918 1.15.4.2 rpaulo if (node->efe) 1919 1.15.4.2 rpaulo pool_put(ump->desc_pool, node->efe); 1920 1.15.4.2 rpaulo node->efe = &dscr->efe; 1921 1.15.4.2 rpaulo strat = udf_rw16(node->efe->icbtag.strat_type); 1922 1.15.4.2 rpaulo udf_file_type = node->efe->icbtag.file_type; 1923 1.15.4.2 rpaulo file_size = udf_rw64(node->efe->inf_len); 1924 1.15.4.2 rpaulo } 1925 1.15.4.2 rpaulo 1926 1.15.4.2 rpaulo /* check recording strategy (structure) */ 1927 1.15.4.2 rpaulo 1928 1.15.4.2 rpaulo /* 1929 1.15.4.2 rpaulo * Strategy 4096 is a daisy linked chain terminating with an 1930 1.15.4.2 rpaulo * unrecorded sector or a TERM descriptor. The next 1931 1.15.4.2 rpaulo * descriptor is to be found in the sector that follows the 1932 1.15.4.2 rpaulo * current sector. 1933 1.15.4.2 rpaulo */ 1934 1.15.4.2 rpaulo if (strat == 4096) { 1935 1.15.4.2 rpaulo strat4096 = 1; 1936 1.15.4.2 rpaulo needs_indirect = 1; 1937 1.15.4.2 rpaulo 1938 1.15.4.2 rpaulo icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 1939 1.15.4.2 rpaulo } 1940 1.15.4.2 rpaulo 1941 1.15.4.2 rpaulo /* 1942 1.15.4.2 rpaulo * Strategy 4 is the normal strategy and terminates, but if 1943 1.15.4.2 rpaulo * we're in strategy 4096, we can't have strategy 4 mixed in 1944 1.15.4.2 rpaulo */ 1945 1.15.4.2 rpaulo 1946 1.15.4.2 rpaulo if (strat == 4) { 1947 1.15.4.2 rpaulo if (strat4096) { 1948 1.15.4.2 rpaulo error = EINVAL; 1949 1.15.4.2 rpaulo break; 1950 1.15.4.2 rpaulo } 1951 1.15.4.2 rpaulo break; /* done */ 1952 1.15.4.2 rpaulo } 1953 1.15.4.2 rpaulo } while (!error); 1954 1.15.4.2 rpaulo 1955 1.15.4.2 rpaulo if (error) { 1956 1.15.4.2 rpaulo /* recycle udf_node */ 1957 1.15.4.2 rpaulo udf_dispose_node(node); 1958 1.15.4.2 rpaulo 1959 1.15.4.2 rpaulo /* recycle vnode */ 1960 1.15.4.2 rpaulo nvp->v_data = NULL; 1961 1.15.4.2 rpaulo ungetnewvnode(nvp); 1962 1.15.4.2 rpaulo 1963 1.15.4.2 rpaulo return EINVAL; /* error code ok? */ 1964 1.15.4.2 rpaulo } 1965 1.15.4.2 rpaulo 1966 1.15.4.2 rpaulo /* post process and initialise node */ 1967 1.15.4.2 rpaulo 1968 1.15.4.2 rpaulo /* assert no references to dscr anymore beyong this point */ 1969 1.15.4.2 rpaulo assert((node->fe) || (node->efe)); 1970 1.15.4.2 rpaulo dscr = NULL; 1971 1.15.4.2 rpaulo 1972 1.15.4.2 rpaulo /* 1973 1.15.4.2 rpaulo * Record where to record an updated version of the descriptor. If 1974 1.15.4.2 rpaulo * there is a sequence of indirect entries, icb_loc will have been 1975 1.15.4.2 rpaulo * updated. Its the write disipline to allocate new space and to make 1976 1.15.4.2 rpaulo * sure the chain is maintained. 1977 1.15.4.2 rpaulo * 1978 1.15.4.2 rpaulo * `needs_indirect' flags if the next location is to be filled with 1979 1.15.4.2 rpaulo * with an indirect entry. 1980 1.15.4.2 rpaulo */ 1981 1.15.4.2 rpaulo node->next_loc = icb_loc; 1982 1.15.4.2 rpaulo node->needs_indirect = needs_indirect; 1983 1.15.4.2 rpaulo 1984 1.15.4.2 rpaulo /* 1985 1.15.4.2 rpaulo * Translate UDF filetypes into vnode types. 1986 1.15.4.2 rpaulo * 1987 1.15.4.2 rpaulo * Systemfiles like the meta main and mirror files are not treated as 1988 1.15.4.2 rpaulo * normal files, so we type them as having no type. UDF dictates that 1989 1.15.4.2 rpaulo * they are not allowed to be visible. 1990 1.15.4.2 rpaulo */ 1991 1.15.4.2 rpaulo 1992 1.15.4.2 rpaulo /* TODO specfs, fifofs etc etc. vnops setting */ 1993 1.15.4.2 rpaulo switch (udf_file_type) { 1994 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_DIRECTORY : 1995 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_STREAMDIR : 1996 1.15.4.2 rpaulo nvp->v_type = VDIR; 1997 1.15.4.2 rpaulo break; 1998 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_BLOCKDEVICE : 1999 1.15.4.2 rpaulo nvp->v_type = VBLK; 2000 1.15.4.2 rpaulo break; 2001 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_CHARDEVICE : 2002 1.15.4.2 rpaulo nvp->v_type = VCHR; 2003 1.15.4.2 rpaulo break; 2004 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_SYMLINK : 2005 1.15.4.2 rpaulo nvp->v_type = VLNK; 2006 1.15.4.2 rpaulo break; 2007 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_META_MAIN : 2008 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_META_MIRROR : 2009 1.15.4.2 rpaulo nvp->v_type = VNON; 2010 1.15.4.2 rpaulo break; 2011 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_RANDOMACCESS : 2012 1.15.4.2 rpaulo nvp->v_type = VREG; 2013 1.15.4.2 rpaulo break; 2014 1.15.4.2 rpaulo default: 2015 1.15.4.2 rpaulo /* YIKES, either a block/char device, fifo or something else */ 2016 1.15.4.2 rpaulo nvp->v_type = VNON; 2017 1.15.4.2 rpaulo } 2018 1.15.4.2 rpaulo 2019 1.15.4.2 rpaulo /* initialise genfs */ 2020 1.15.4.2 rpaulo genfs_node_init(nvp, &udf_genfsops); 2021 1.15.4.2 rpaulo 2022 1.15.4.2 rpaulo /* don't forget to set vnode's v_size */ 2023 1.15.4.2 rpaulo nvp->v_size = file_size; 2024 1.15.4.2 rpaulo 2025 1.15.4.2 rpaulo /* TODO ext attr and streamdir nodes */ 2026 1.15.4.2 rpaulo 2027 1.15.4.2 rpaulo *noderes = node; 2028 1.15.4.2 rpaulo 2029 1.15.4.2 rpaulo return 0; 2030 1.15.4.2 rpaulo } 2031 1.15.4.2 rpaulo 2032 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2033 1.15.4.2 rpaulo 2034 1.15.4.2 rpaulo /* UDF<->unix converters */ 2035 1.15.4.2 rpaulo 2036 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2037 1.15.4.2 rpaulo 2038 1.15.4.2 rpaulo static mode_t 2039 1.15.4.2 rpaulo udf_perm_to_unix_mode(uint32_t perm) 2040 1.15.4.2 rpaulo { 2041 1.15.4.2 rpaulo mode_t mode; 2042 1.15.4.2 rpaulo 2043 1.15.4.2 rpaulo mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 2044 1.15.4.2 rpaulo mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 2045 1.15.4.2 rpaulo mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 2046 1.15.4.2 rpaulo 2047 1.15.4.2 rpaulo return mode; 2048 1.15.4.2 rpaulo } 2049 1.15.4.2 rpaulo 2050 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2051 1.15.4.2 rpaulo 2052 1.15.4.2 rpaulo #ifdef notyet 2053 1.15.4.2 rpaulo static uint32_t 2054 1.15.4.2 rpaulo unix_mode_to_udf_perm(mode_t mode) 2055 1.15.4.2 rpaulo { 2056 1.15.4.2 rpaulo uint32_t perm; 2057 1.15.4.2 rpaulo 2058 1.15.4.2 rpaulo perm = ((mode & S_IRWXO) ); 2059 1.15.4.2 rpaulo perm |= ((mode & S_IRWXG) << 2); 2060 1.15.4.2 rpaulo perm |= ((mode & S_IRWXU) << 4); 2061 1.15.4.2 rpaulo perm |= ((mode & S_IWOTH) << 3); 2062 1.15.4.2 rpaulo perm |= ((mode & S_IWGRP) << 5); 2063 1.15.4.2 rpaulo perm |= ((mode & S_IWUSR) << 7); 2064 1.15.4.2 rpaulo 2065 1.15.4.2 rpaulo return perm; 2066 1.15.4.2 rpaulo } 2067 1.15.4.2 rpaulo #endif 2068 1.15.4.2 rpaulo 2069 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2070 1.15.4.2 rpaulo 2071 1.15.4.2 rpaulo static uint32_t 2072 1.15.4.2 rpaulo udf_icb_to_unix_filetype(uint32_t icbftype) 2073 1.15.4.2 rpaulo { 2074 1.15.4.2 rpaulo switch (icbftype) { 2075 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_DIRECTORY : 2076 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_STREAMDIR : 2077 1.15.4.2 rpaulo return S_IFDIR; 2078 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_FIFO : 2079 1.15.4.2 rpaulo return S_IFIFO; 2080 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_CHARDEVICE : 2081 1.15.4.2 rpaulo return S_IFCHR; 2082 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_BLOCKDEVICE : 2083 1.15.4.2 rpaulo return S_IFBLK; 2084 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_RANDOMACCESS : 2085 1.15.4.2 rpaulo return S_IFREG; 2086 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_SYMLINK : 2087 1.15.4.2 rpaulo return S_IFLNK; 2088 1.15.4.2 rpaulo case UDF_ICB_FILETYPE_SOCKET : 2089 1.15.4.2 rpaulo return S_IFSOCK; 2090 1.15.4.2 rpaulo } 2091 1.15.4.2 rpaulo /* no idea what this is */ 2092 1.15.4.2 rpaulo return 0; 2093 1.15.4.2 rpaulo } 2094 1.15.4.2 rpaulo 2095 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2096 1.15.4.2 rpaulo 2097 1.15.4.2 rpaulo /* TODO KNF-ify */ 2098 1.15.4.2 rpaulo 2099 1.15.4.2 rpaulo void 2100 1.15.4.2 rpaulo udf_to_unix_name(char *result, char *id, int len, struct charspec *chsp) 2101 1.15.4.2 rpaulo { 2102 1.15.4.2 rpaulo uint16_t *raw_name, *unix_name; 2103 1.15.4.2 rpaulo uint16_t *inchp, ch; 2104 1.15.4.2 rpaulo uint8_t *outchp; 2105 1.15.4.2 rpaulo int ucode_chars, nice_uchars; 2106 1.15.4.2 rpaulo 2107 1.15.4.2 rpaulo raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 2108 1.15.4.2 rpaulo unix_name = raw_name + 1024; /* split space in half */ 2109 1.15.4.2 rpaulo assert(sizeof(char) == sizeof(uint8_t)); 2110 1.15.4.2 rpaulo outchp = (uint8_t *) result; 2111 1.15.4.2 rpaulo if ((chsp->type == 0) && (strcmp((char*) chsp->inf, "OSTA Compressed Unicode") == 0)) { 2112 1.15.4.2 rpaulo *raw_name = *unix_name = 0; 2113 1.15.4.2 rpaulo ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 2114 1.15.4.2 rpaulo ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 2115 1.15.4.2 rpaulo nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 2116 1.15.4.2 rpaulo for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 2117 1.15.4.2 rpaulo ch = *inchp; 2118 1.15.4.2 rpaulo /* XXX sloppy unicode -> latin */ 2119 1.15.4.2 rpaulo *outchp++ = ch & 255; 2120 1.15.4.2 rpaulo if (!ch) break; 2121 1.15.4.2 rpaulo } 2122 1.15.4.2 rpaulo *outchp++ = 0; 2123 1.15.4.2 rpaulo } else { 2124 1.15.4.2 rpaulo /* assume 8bit char length byte latin-1 */ 2125 1.15.4.2 rpaulo assert(*id == 8); 2126 1.15.4.2 rpaulo strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 2127 1.15.4.2 rpaulo } 2128 1.15.4.2 rpaulo free(raw_name, M_UDFTEMP); 2129 1.15.4.2 rpaulo } 2130 1.15.4.2 rpaulo 2131 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2132 1.15.4.2 rpaulo 2133 1.15.4.2 rpaulo /* TODO KNF-ify */ 2134 1.15.4.2 rpaulo 2135 1.15.4.2 rpaulo void 2136 1.15.4.2 rpaulo unix_to_udf_name(char *result, char *name, 2137 1.15.4.2 rpaulo uint8_t *result_len, struct charspec *chsp) 2138 1.15.4.2 rpaulo { 2139 1.15.4.2 rpaulo uint16_t *raw_name; 2140 1.15.4.2 rpaulo int udf_chars, name_len; 2141 1.15.4.2 rpaulo char *inchp; 2142 1.15.4.2 rpaulo uint16_t *outchp; 2143 1.15.4.2 rpaulo 2144 1.15.4.2 rpaulo raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 2145 1.15.4.2 rpaulo /* convert latin-1 or whatever to unicode-16 */ 2146 1.15.4.2 rpaulo *raw_name = 0; 2147 1.15.4.2 rpaulo name_len = 0; 2148 1.15.4.2 rpaulo inchp = name; 2149 1.15.4.2 rpaulo outchp = raw_name; 2150 1.15.4.2 rpaulo while (*inchp) { 2151 1.15.4.2 rpaulo *outchp++ = (uint16_t) (*inchp++); 2152 1.15.4.2 rpaulo name_len++; 2153 1.15.4.2 rpaulo } 2154 1.15.4.2 rpaulo 2155 1.15.4.2 rpaulo if ((chsp->type == 0) && (strcmp((char *) chsp->inf, "OSTA Compressed Unicode") == 0)) { 2156 1.15.4.2 rpaulo udf_chars = udf_CompressUnicode(name_len, 8, (unicode_t *) raw_name, (byte *) result); 2157 1.15.4.2 rpaulo } else { 2158 1.15.4.2 rpaulo /* XXX assume 8bit char length byte latin-1 */ 2159 1.15.4.2 rpaulo *result++ = 8; udf_chars = 1; 2160 1.15.4.2 rpaulo strncpy(result, name + 1, strlen(name+1)); 2161 1.15.4.2 rpaulo udf_chars += strlen(name); 2162 1.15.4.2 rpaulo } 2163 1.15.4.2 rpaulo *result_len = udf_chars; 2164 1.15.4.2 rpaulo free(raw_name, M_UDFTEMP); 2165 1.15.4.2 rpaulo } 2166 1.15.4.2 rpaulo 2167 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2168 1.15.4.2 rpaulo 2169 1.15.4.2 rpaulo /* 2170 1.15.4.2 rpaulo * Timestamp to timespec conversion code is taken with small modifications 2171 1.15.4.2 rpaulo * from FreeBSDs /sys/fs/udf by Scott Long <scottl (at) freebsd.org>. Added with 2172 1.15.4.2 rpaulo * permission from Scott. 2173 1.15.4.2 rpaulo */ 2174 1.15.4.2 rpaulo 2175 1.15.4.2 rpaulo static int mon_lens[2][12] = { 2176 1.15.4.2 rpaulo {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, 2177 1.15.4.2 rpaulo {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} 2178 1.15.4.2 rpaulo }; 2179 1.15.4.2 rpaulo 2180 1.15.4.2 rpaulo 2181 1.15.4.2 rpaulo static int 2182 1.15.4.2 rpaulo udf_isaleapyear(int year) 2183 1.15.4.2 rpaulo { 2184 1.15.4.2 rpaulo int i; 2185 1.15.4.2 rpaulo 2186 1.15.4.2 rpaulo i = (year % 4) ? 0 : 1; 2187 1.15.4.2 rpaulo i &= (year % 100) ? 1 : 0; 2188 1.15.4.2 rpaulo i |= (year % 400) ? 0 : 1; 2189 1.15.4.2 rpaulo 2190 1.15.4.2 rpaulo return i; 2191 1.15.4.2 rpaulo } 2192 1.15.4.2 rpaulo 2193 1.15.4.2 rpaulo 2194 1.15.4.2 rpaulo void 2195 1.15.4.2 rpaulo udf_timestamp_to_timespec(struct udf_mount *ump, 2196 1.15.4.2 rpaulo struct timestamp *timestamp, 2197 1.15.4.2 rpaulo struct timespec *timespec) 2198 1.15.4.2 rpaulo { 2199 1.15.4.2 rpaulo uint32_t usecs, secs, nsecs; 2200 1.15.4.2 rpaulo uint16_t tz; 2201 1.15.4.2 rpaulo int i, lpyear, daysinyear, year; 2202 1.15.4.2 rpaulo 2203 1.15.4.2 rpaulo timespec->tv_sec = secs = 0; 2204 1.15.4.2 rpaulo timespec->tv_nsec = nsecs = 0; 2205 1.15.4.2 rpaulo 2206 1.15.4.2 rpaulo /* 2207 1.15.4.2 rpaulo * DirectCD seems to like using bogus year values. 2208 1.15.4.2 rpaulo * 2209 1.15.4.2 rpaulo * Distrust time->month especially, since it will be used for an array 2210 1.15.4.2 rpaulo * index. 2211 1.15.4.2 rpaulo */ 2212 1.15.4.2 rpaulo year = udf_rw16(timestamp->year); 2213 1.15.4.2 rpaulo if ((year < 1970) || (timestamp->month > 12)) { 2214 1.15.4.2 rpaulo return; 2215 1.15.4.2 rpaulo } 2216 1.15.4.2 rpaulo 2217 1.15.4.2 rpaulo /* Calculate the time and day 2218 1.15.4.2 rpaulo * Day is 1-31, Month is 1-12 2219 1.15.4.2 rpaulo */ 2220 1.15.4.2 rpaulo 2221 1.15.4.2 rpaulo usecs = timestamp->usec + 2222 1.15.4.2 rpaulo 100*timestamp->hund_usec + 10000*timestamp->centisec; 2223 1.15.4.2 rpaulo nsecs = usecs * 1000; 2224 1.15.4.2 rpaulo secs = timestamp->second; 2225 1.15.4.2 rpaulo secs += timestamp->minute * 60; 2226 1.15.4.2 rpaulo secs += timestamp->hour * 3600; 2227 1.15.4.2 rpaulo secs += (timestamp->day-1) * 3600 * 24; 2228 1.15.4.2 rpaulo 2229 1.15.4.2 rpaulo /* Calclulate the month */ 2230 1.15.4.2 rpaulo lpyear = udf_isaleapyear(year); 2231 1.15.4.2 rpaulo for (i = 1; i < timestamp->month; i++) 2232 1.15.4.2 rpaulo secs += mon_lens[lpyear][i-1] * 3600 * 24; 2233 1.15.4.2 rpaulo 2234 1.15.4.2 rpaulo for (i = 1970; i < year; i++) { 2235 1.15.4.2 rpaulo daysinyear = udf_isaleapyear(i) + 365 ; 2236 1.15.4.2 rpaulo secs += daysinyear * 3600 * 24; 2237 1.15.4.2 rpaulo } 2238 1.15.4.2 rpaulo 2239 1.15.4.2 rpaulo /* 2240 1.15.4.2 rpaulo * Calculate the time zone. The timezone is 12 bit signed 2's 2241 1.15.4.2 rpaulo * compliment, so we gotta do some extra magic to handle it right. 2242 1.15.4.2 rpaulo */ 2243 1.15.4.2 rpaulo tz = udf_rw16(timestamp->type_tz); 2244 1.15.4.2 rpaulo tz &= 0x0fff; /* only lower 12 bits are significant */ 2245 1.15.4.2 rpaulo if (tz & 0x0800) /* sign extention */ 2246 1.15.4.2 rpaulo tz |= 0xf000; 2247 1.15.4.2 rpaulo 2248 1.15.4.2 rpaulo /* TODO check timezone conversion */ 2249 1.15.4.2 rpaulo /* check if we are specified a timezone to convert */ 2250 1.15.4.2 rpaulo if (udf_rw16(timestamp->type_tz) & 0x1000) { 2251 1.15.4.2 rpaulo if ((int16_t) tz != -2047) 2252 1.15.4.2 rpaulo secs -= (int16_t) tz * 60; 2253 1.15.4.2 rpaulo } else { 2254 1.15.4.2 rpaulo secs -= ump->mount_args.gmtoff; 2255 1.15.4.2 rpaulo } 2256 1.15.4.2 rpaulo 2257 1.15.4.2 rpaulo timespec->tv_sec = secs; 2258 1.15.4.2 rpaulo timespec->tv_nsec = nsecs; 2259 1.15.4.2 rpaulo } 2260 1.15.4.2 rpaulo 2261 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2262 1.15.4.2 rpaulo 2263 1.15.4.2 rpaulo /* 2264 1.15.4.2 rpaulo * Attribute and filetypes converters with get/set pairs 2265 1.15.4.2 rpaulo */ 2266 1.15.4.2 rpaulo 2267 1.15.4.2 rpaulo uint32_t 2268 1.15.4.2 rpaulo udf_getaccessmode(struct udf_node *udf_node) 2269 1.15.4.2 rpaulo { 2270 1.15.4.2 rpaulo struct file_entry *fe; 2271 1.15.4.2 rpaulo struct extfile_entry *efe; 2272 1.15.4.2 rpaulo uint32_t udf_perm, icbftype; 2273 1.15.4.2 rpaulo uint32_t mode, ftype; 2274 1.15.4.2 rpaulo uint16_t icbflags; 2275 1.15.4.2 rpaulo 2276 1.15.4.2 rpaulo if (udf_node->fe) { 2277 1.15.4.2 rpaulo fe = udf_node->fe; 2278 1.15.4.2 rpaulo udf_perm = udf_rw32(fe->perm); 2279 1.15.4.2 rpaulo icbftype = fe->icbtag.file_type; 2280 1.15.4.2 rpaulo icbflags = udf_rw16(fe->icbtag.flags); 2281 1.15.4.2 rpaulo } else { 2282 1.15.4.2 rpaulo assert(udf_node->efe); 2283 1.15.4.2 rpaulo efe = udf_node->efe; 2284 1.15.4.2 rpaulo udf_perm = udf_rw32(efe->perm); 2285 1.15.4.2 rpaulo icbftype = efe->icbtag.file_type; 2286 1.15.4.2 rpaulo icbflags = udf_rw16(efe->icbtag.flags); 2287 1.15.4.2 rpaulo } 2288 1.15.4.2 rpaulo 2289 1.15.4.2 rpaulo mode = udf_perm_to_unix_mode(udf_perm); 2290 1.15.4.2 rpaulo ftype = udf_icb_to_unix_filetype(icbftype); 2291 1.15.4.2 rpaulo 2292 1.15.4.2 rpaulo /* set suid, sgid, sticky from flags in fe/efe */ 2293 1.15.4.2 rpaulo if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 2294 1.15.4.2 rpaulo mode |= S_ISUID; 2295 1.15.4.2 rpaulo if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 2296 1.15.4.2 rpaulo mode |= S_ISGID; 2297 1.15.4.2 rpaulo if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 2298 1.15.4.2 rpaulo mode |= S_ISVTX; 2299 1.15.4.2 rpaulo 2300 1.15.4.2 rpaulo return mode | ftype; 2301 1.15.4.2 rpaulo } 2302 1.15.4.2 rpaulo 2303 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2304 1.15.4.2 rpaulo 2305 1.15.4.2 rpaulo /* 2306 1.15.4.2 rpaulo * Directory read and manipulation functions 2307 1.15.4.2 rpaulo */ 2308 1.15.4.2 rpaulo 2309 1.15.4.2 rpaulo int 2310 1.15.4.2 rpaulo udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 2311 1.15.4.2 rpaulo struct long_ad *icb_loc) 2312 1.15.4.2 rpaulo { 2313 1.15.4.2 rpaulo struct udf_node *dir_node = VTOI(vp); 2314 1.15.4.2 rpaulo struct file_entry *fe; 2315 1.15.4.2 rpaulo struct extfile_entry *efe; 2316 1.15.4.2 rpaulo struct fileid_desc *fid; 2317 1.15.4.2 rpaulo struct dirent dirent; 2318 1.15.4.2 rpaulo uint64_t file_size, diroffset; 2319 1.15.4.2 rpaulo uint32_t lb_size; 2320 1.15.4.2 rpaulo int found, error; 2321 1.15.4.2 rpaulo 2322 1.15.4.2 rpaulo /* get directory filesize */ 2323 1.15.4.2 rpaulo if (dir_node->fe) { 2324 1.15.4.2 rpaulo fe = dir_node->fe; 2325 1.15.4.2 rpaulo file_size = udf_rw64(fe->inf_len); 2326 1.15.4.2 rpaulo } else { 2327 1.15.4.2 rpaulo assert(dir_node->efe); 2328 1.15.4.2 rpaulo efe = dir_node->efe; 2329 1.15.4.2 rpaulo file_size = udf_rw64(efe->inf_len); 2330 1.15.4.2 rpaulo } 2331 1.15.4.2 rpaulo 2332 1.15.4.2 rpaulo /* allocate temporary space for fid */ 2333 1.15.4.2 rpaulo lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 2334 1.15.4.2 rpaulo fid = malloc(lb_size, M_TEMP, M_WAITOK); 2335 1.15.4.2 rpaulo 2336 1.15.4.2 rpaulo found = 0; 2337 1.15.4.2 rpaulo diroffset = 0; 2338 1.15.4.2 rpaulo while (!found && (diroffset < file_size)) { 2339 1.15.4.2 rpaulo /* transfer a new fid/dirent */ 2340 1.15.4.2 rpaulo error = udf_read_fid_stream(vp, &diroffset, fid, &dirent); 2341 1.15.4.2 rpaulo if (error) 2342 1.15.4.2 rpaulo break; 2343 1.15.4.2 rpaulo 2344 1.15.4.2 rpaulo /* skip deleted entries */ 2345 1.15.4.2 rpaulo if (fid->file_char & UDF_FILE_CHAR_DEL) 2346 1.15.4.2 rpaulo continue; 2347 1.15.4.2 rpaulo 2348 1.15.4.2 rpaulo if ((strlen(dirent.d_name) == namelen) && 2349 1.15.4.2 rpaulo (strncmp(dirent.d_name, name, namelen) == 0)) { 2350 1.15.4.2 rpaulo found = 1; 2351 1.15.4.2 rpaulo *icb_loc = fid->icb; 2352 1.15.4.2 rpaulo } 2353 1.15.4.2 rpaulo } 2354 1.15.4.2 rpaulo free(fid, M_TEMP); 2355 1.15.4.2 rpaulo 2356 1.15.4.2 rpaulo return found; 2357 1.15.4.2 rpaulo } 2358 1.15.4.2 rpaulo 2359 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2360 1.15.4.2 rpaulo 2361 1.15.4.2 rpaulo /* 2362 1.15.4.2 rpaulo * Read one fid and process it into a dirent and advance to the next (*fid) 2363 1.15.4.2 rpaulo * has to be allocated a logical block in size, (*dirent) struct dirent length 2364 1.15.4.2 rpaulo */ 2365 1.15.4.2 rpaulo 2366 1.15.4.2 rpaulo int 2367 1.15.4.2 rpaulo udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 2368 1.15.4.2 rpaulo struct fileid_desc *fid, struct dirent *dirent) 2369 1.15.4.2 rpaulo { 2370 1.15.4.2 rpaulo struct udf_node *dir_node = VTOI(vp); 2371 1.15.4.2 rpaulo struct udf_mount *ump = dir_node->ump; 2372 1.15.4.2 rpaulo struct file_entry *fe; 2373 1.15.4.2 rpaulo struct extfile_entry *efe; 2374 1.15.4.2 rpaulo struct uio dir_uio; 2375 1.15.4.2 rpaulo struct iovec dir_iovec; 2376 1.15.4.2 rpaulo uint32_t entry_length, lb_size; 2377 1.15.4.2 rpaulo uint64_t file_size; 2378 1.15.4.2 rpaulo char *fid_name; 2379 1.15.4.2 rpaulo int enough, error; 2380 1.15.4.2 rpaulo 2381 1.15.4.2 rpaulo assert(fid); 2382 1.15.4.2 rpaulo assert(dirent); 2383 1.15.4.2 rpaulo assert(dir_node); 2384 1.15.4.2 rpaulo assert(offset); 2385 1.15.4.2 rpaulo assert(*offset != 1); 2386 1.15.4.2 rpaulo 2387 1.15.4.2 rpaulo DPRINTF(FIDS, ("read_fid_stream called\n")); 2388 1.15.4.2 rpaulo /* check if we're past the end of the directory */ 2389 1.15.4.2 rpaulo if (dir_node->fe) { 2390 1.15.4.2 rpaulo fe = dir_node->fe; 2391 1.15.4.2 rpaulo file_size = udf_rw64(fe->inf_len); 2392 1.15.4.2 rpaulo } else { 2393 1.15.4.2 rpaulo assert(dir_node->efe); 2394 1.15.4.2 rpaulo efe = dir_node->efe; 2395 1.15.4.2 rpaulo file_size = udf_rw64(efe->inf_len); 2396 1.15.4.2 rpaulo } 2397 1.15.4.2 rpaulo if (*offset >= file_size) 2398 1.15.4.2 rpaulo return EINVAL; 2399 1.15.4.2 rpaulo 2400 1.15.4.2 rpaulo /* get maximum length of FID descriptor */ 2401 1.15.4.2 rpaulo lb_size = udf_rw32(ump->logical_vol->lb_size); 2402 1.15.4.2 rpaulo 2403 1.15.4.2 rpaulo /* initialise return values */ 2404 1.15.4.2 rpaulo entry_length = 0; 2405 1.15.4.2 rpaulo memset(dirent, 0, sizeof(struct dirent)); 2406 1.15.4.2 rpaulo memset(fid, 0, lb_size); 2407 1.15.4.2 rpaulo 2408 1.15.4.2 rpaulo /* TODO use vn_rdwr instead of creating our own uio */ 2409 1.15.4.2 rpaulo /* read part of the directory */ 2410 1.15.4.2 rpaulo memset(&dir_uio, 0, sizeof(struct uio)); 2411 1.15.4.2 rpaulo dir_uio.uio_rw = UIO_READ; /* read into this space */ 2412 1.15.4.2 rpaulo dir_uio.uio_iovcnt = 1; 2413 1.15.4.2 rpaulo dir_uio.uio_iov = &dir_iovec; 2414 1.15.4.2 rpaulo UIO_SETUP_SYSSPACE(&dir_uio); 2415 1.15.4.2 rpaulo dir_iovec.iov_base = fid; 2416 1.15.4.2 rpaulo dir_iovec.iov_len = lb_size; 2417 1.15.4.2 rpaulo dir_uio.uio_offset = *offset; 2418 1.15.4.2 rpaulo 2419 1.15.4.2 rpaulo /* limit length of read in piece */ 2420 1.15.4.2 rpaulo dir_uio.uio_resid = MIN(file_size - (*offset), lb_size); 2421 1.15.4.2 rpaulo 2422 1.15.4.2 rpaulo /* read the part into the fid space */ 2423 1.15.4.2 rpaulo error = VOP_READ(vp, &dir_uio, IO_ALTSEMANTICS, NOCRED); 2424 1.15.4.2 rpaulo if (error) 2425 1.15.4.2 rpaulo return error; 2426 1.15.4.2 rpaulo 2427 1.15.4.2 rpaulo /* 2428 1.15.4.2 rpaulo * Check if we got a whole descriptor. 2429 1.15.4.2 rpaulo * XXX Try to `resync' directory stream when something is very wrong. 2430 1.15.4.2 rpaulo * 2431 1.15.4.2 rpaulo */ 2432 1.15.4.2 rpaulo enough = (dir_uio.uio_offset - (*offset) >= UDF_FID_SIZE); 2433 1.15.4.2 rpaulo if (!enough) { 2434 1.15.4.2 rpaulo /* short dir ... */ 2435 1.15.4.2 rpaulo return EIO; 2436 1.15.4.2 rpaulo } 2437 1.15.4.2 rpaulo 2438 1.15.4.2 rpaulo /* check if our FID header is OK */ 2439 1.15.4.2 rpaulo error = udf_check_tag(fid); 2440 1.15.4.2 rpaulo DPRINTFIF(FIDS, error, ("read fids: tag check failed\n")); 2441 1.15.4.2 rpaulo if (!error) { 2442 1.15.4.2 rpaulo if (udf_rw16(fid->tag.id) != TAGID_FID) 2443 1.15.4.2 rpaulo error = ENOENT; 2444 1.15.4.2 rpaulo } 2445 1.15.4.2 rpaulo DPRINTFIF(FIDS, !error, ("\ttag checked ok: got TAGID_FID\n")); 2446 1.15.4.2 rpaulo 2447 1.15.4.2 rpaulo /* check for length */ 2448 1.15.4.2 rpaulo if (!error) { 2449 1.15.4.2 rpaulo entry_length = udf_fidsize(fid, lb_size); 2450 1.15.4.2 rpaulo enough = (dir_uio.uio_offset - (*offset) >= entry_length); 2451 1.15.4.2 rpaulo } 2452 1.15.4.2 rpaulo DPRINTFIF(FIDS, !error, ("\tentry_length = %d, enough = %s\n", 2453 1.15.4.2 rpaulo entry_length, enough?"yes":"no")); 2454 1.15.4.2 rpaulo 2455 1.15.4.2 rpaulo if (!enough) { 2456 1.15.4.2 rpaulo /* short dir ... bomb out */ 2457 1.15.4.2 rpaulo return EIO; 2458 1.15.4.2 rpaulo } 2459 1.15.4.2 rpaulo 2460 1.15.4.2 rpaulo /* check FID contents */ 2461 1.15.4.2 rpaulo if (!error) { 2462 1.15.4.2 rpaulo error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 2463 1.15.4.2 rpaulo DPRINTF(FIDS, ("\tpayload checked ok\n")); 2464 1.15.4.2 rpaulo } 2465 1.15.4.2 rpaulo if (error) { 2466 1.15.4.2 rpaulo /* note that is sometimes a bit quick to report */ 2467 1.15.4.2 rpaulo printf("BROKEN DIRECTORY ENTRY\n"); 2468 1.15.4.2 rpaulo /* RESYNC? */ 2469 1.15.4.2 rpaulo /* TODO: use udf_resync_fid_stream */ 2470 1.15.4.2 rpaulo return EIO; 2471 1.15.4.2 rpaulo } 2472 1.15.4.2 rpaulo DPRINTF(FIDS, ("\tinterpret FID\n")); 2473 1.15.4.2 rpaulo 2474 1.15.4.2 rpaulo /* we got a whole and valid descriptor! */ 2475 1.15.4.2 rpaulo 2476 1.15.4.2 rpaulo /* create resulting dirent structure */ 2477 1.15.4.2 rpaulo fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 2478 1.15.4.2 rpaulo udf_to_unix_name(dirent->d_name, 2479 1.15.4.2 rpaulo fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 2480 1.15.4.2 rpaulo 2481 1.15.4.2 rpaulo /* '..' has no name, so provide one */ 2482 1.15.4.2 rpaulo if (fid->file_char & UDF_FILE_CHAR_PAR) 2483 1.15.4.2 rpaulo strcpy(dirent->d_name, ".."); 2484 1.15.4.2 rpaulo 2485 1.15.4.2 rpaulo dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 2486 1.15.4.2 rpaulo dirent->d_namlen = strlen(dirent->d_name); 2487 1.15.4.2 rpaulo dirent->d_reclen = _DIRENT_SIZE(dirent); 2488 1.15.4.2 rpaulo 2489 1.15.4.2 rpaulo /* 2490 1.15.4.2 rpaulo * Note that its not worth trying to go for the filetypes now... its 2491 1.15.4.2 rpaulo * too expensive too 2492 1.15.4.2 rpaulo */ 2493 1.15.4.2 rpaulo dirent->d_type = DT_UNKNOWN; 2494 1.15.4.2 rpaulo 2495 1.15.4.2 rpaulo /* initial guess for filetype we can make */ 2496 1.15.4.2 rpaulo if (fid->file_char & UDF_FILE_CHAR_DIR) 2497 1.15.4.2 rpaulo dirent->d_type = DT_DIR; 2498 1.15.4.2 rpaulo 2499 1.15.4.2 rpaulo /* advance */ 2500 1.15.4.2 rpaulo *offset += entry_length; 2501 1.15.4.2 rpaulo 2502 1.15.4.2 rpaulo return error; 2503 1.15.4.2 rpaulo } 2504 1.15.4.2 rpaulo 2505 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2506 1.15.4.2 rpaulo 2507 1.15.4.2 rpaulo /* 2508 1.15.4.2 rpaulo * block based file reading and writing 2509 1.15.4.2 rpaulo */ 2510 1.15.4.2 rpaulo 2511 1.15.4.2 rpaulo static int 2512 1.15.4.2 rpaulo udf_read_internal(struct udf_node *node, uint8_t *blob) 2513 1.15.4.2 rpaulo { 2514 1.15.4.2 rpaulo struct udf_mount *ump; 2515 1.15.4.2 rpaulo struct file_entry *fe; 2516 1.15.4.2 rpaulo struct extfile_entry *efe; 2517 1.15.4.2 rpaulo uint64_t inflen; 2518 1.15.4.2 rpaulo uint32_t sector_size; 2519 1.15.4.2 rpaulo uint8_t *pos; 2520 1.15.4.2 rpaulo int icbflags, addr_type; 2521 1.15.4.2 rpaulo 2522 1.15.4.2 rpaulo /* shut up gcc */ 2523 1.15.4.2 rpaulo inflen = addr_type = icbflags = 0; 2524 1.15.4.2 rpaulo pos = NULL; 2525 1.15.4.2 rpaulo 2526 1.15.4.2 rpaulo /* get extent and do some paranoia checks */ 2527 1.15.4.2 rpaulo ump = node->ump; 2528 1.15.4.2 rpaulo sector_size = ump->discinfo.sector_size; 2529 1.15.4.2 rpaulo 2530 1.15.4.2 rpaulo fe = node->fe; 2531 1.15.4.2 rpaulo efe = node->efe; 2532 1.15.4.2 rpaulo if (fe) { 2533 1.15.4.2 rpaulo inflen = udf_rw64(fe->inf_len); 2534 1.15.4.2 rpaulo pos = &fe->data[0] + udf_rw32(fe->l_ea); 2535 1.15.4.2 rpaulo icbflags = udf_rw16(fe->icbtag.flags); 2536 1.15.4.2 rpaulo } 2537 1.15.4.2 rpaulo if (efe) { 2538 1.15.4.2 rpaulo inflen = udf_rw64(efe->inf_len); 2539 1.15.4.2 rpaulo pos = &efe->data[0] + udf_rw32(efe->l_ea); 2540 1.15.4.2 rpaulo icbflags = udf_rw16(efe->icbtag.flags); 2541 1.15.4.2 rpaulo } 2542 1.15.4.2 rpaulo addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 2543 1.15.4.2 rpaulo 2544 1.15.4.2 rpaulo assert(addr_type == UDF_ICB_INTERN_ALLOC); 2545 1.15.4.2 rpaulo assert(inflen < sector_size); 2546 1.15.4.2 rpaulo 2547 1.15.4.2 rpaulo /* copy out info */ 2548 1.15.4.2 rpaulo memset(blob, 0, sector_size); 2549 1.15.4.2 rpaulo memcpy(blob, pos, inflen); 2550 1.15.4.2 rpaulo 2551 1.15.4.2 rpaulo return 0; 2552 1.15.4.2 rpaulo } 2553 1.15.4.2 rpaulo 2554 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2555 1.15.4.2 rpaulo 2556 1.15.4.2 rpaulo /* 2557 1.15.4.2 rpaulo * Read file extent reads an extent specified in sectors from the file. It is 2558 1.15.4.2 rpaulo * sector based; i.e. no `fancy' offsets. 2559 1.15.4.2 rpaulo */ 2560 1.15.4.2 rpaulo 2561 1.15.4.2 rpaulo int 2562 1.15.4.2 rpaulo udf_read_file_extent(struct udf_node *node, 2563 1.15.4.2 rpaulo uint32_t from, uint32_t sectors, 2564 1.15.4.2 rpaulo uint8_t *blob) 2565 1.15.4.2 rpaulo { 2566 1.15.4.2 rpaulo struct buf buf; 2567 1.15.4.2 rpaulo uint32_t sector_size; 2568 1.15.4.2 rpaulo 2569 1.15.4.2 rpaulo BUF_INIT(&buf); 2570 1.15.4.2 rpaulo 2571 1.15.4.2 rpaulo sector_size = node->ump->discinfo.sector_size; 2572 1.15.4.2 rpaulo 2573 1.15.4.2 rpaulo buf.b_bufsize = sectors * sector_size; 2574 1.15.4.2 rpaulo buf.b_data = blob; 2575 1.15.4.2 rpaulo buf.b_bcount = buf.b_bufsize; 2576 1.15.4.2 rpaulo buf.b_resid = buf.b_bcount; 2577 1.15.4.2 rpaulo buf.b_flags = B_BUSY | B_READ; 2578 1.15.4.2 rpaulo buf.b_vp = node->vnode; 2579 1.15.4.2 rpaulo buf.b_proc = NULL; 2580 1.15.4.2 rpaulo 2581 1.15.4.2 rpaulo buf.b_blkno = from; 2582 1.15.4.2 rpaulo buf.b_lblkno = 0; 2583 1.15.4.2 rpaulo BIO_SETPRIO(&buf, BPRIO_TIMELIMITED); 2584 1.15.4.2 rpaulo 2585 1.15.4.2 rpaulo udf_read_filebuf(node, &buf); 2586 1.15.4.2 rpaulo return biowait(&buf); 2587 1.15.4.2 rpaulo } 2588 1.15.4.2 rpaulo 2589 1.15.4.2 rpaulo 2590 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2591 1.15.4.2 rpaulo 2592 1.15.4.2 rpaulo /* 2593 1.15.4.2 rpaulo * Read file extent in the buffer. 2594 1.15.4.2 rpaulo * 2595 1.15.4.2 rpaulo * The splitup of the extent into seperate request-buffers is to minimise 2596 1.15.4.2 rpaulo * copying around as much as possible. 2597 1.15.4.2 rpaulo */ 2598 1.15.4.2 rpaulo 2599 1.15.4.2 rpaulo 2600 1.15.4.2 rpaulo /* maximum of 128 translations (!) (64 kb in 512 byte sectors) */ 2601 1.15.4.2 rpaulo #define FILEBUFSECT 128 2602 1.15.4.2 rpaulo 2603 1.15.4.2 rpaulo void 2604 1.15.4.2 rpaulo udf_read_filebuf(struct udf_node *node, struct buf *buf) 2605 1.15.4.2 rpaulo { 2606 1.15.4.2 rpaulo struct buf *nestbuf; 2607 1.15.4.2 rpaulo uint64_t *mapping; 2608 1.15.4.2 rpaulo uint64_t run_start; 2609 1.15.4.2 rpaulo uint32_t sector_size; 2610 1.15.4.2 rpaulo uint32_t buf_offset, sector, rbuflen, rblk; 2611 1.15.4.2 rpaulo uint8_t *buf_pos; 2612 1.15.4.2 rpaulo int error, run_length; 2613 1.15.4.2 rpaulo 2614 1.15.4.2 rpaulo uint32_t from; 2615 1.15.4.2 rpaulo uint32_t sectors; 2616 1.15.4.2 rpaulo 2617 1.15.4.2 rpaulo sector_size = node->ump->discinfo.sector_size; 2618 1.15.4.2 rpaulo 2619 1.15.4.2 rpaulo from = buf->b_blkno; 2620 1.15.4.2 rpaulo sectors = buf->b_bcount / sector_size; 2621 1.15.4.2 rpaulo 2622 1.15.4.2 rpaulo /* assure we have enough translation slots */ 2623 1.15.4.2 rpaulo KASSERT(buf->b_bcount / sector_size <= FILEBUFSECT); 2624 1.15.4.2 rpaulo KASSERT(MAXPHYS / sector_size <= FILEBUFSECT); 2625 1.15.4.2 rpaulo 2626 1.15.4.2 rpaulo if (sectors > FILEBUFSECT) { 2627 1.15.4.2 rpaulo printf("udf_read_filebuf: implementation limit on bufsize\n"); 2628 1.15.4.2 rpaulo buf->b_error = EIO; 2629 1.15.4.2 rpaulo buf->b_flags |= B_ERROR; 2630 1.15.4.2 rpaulo biodone(buf); 2631 1.15.4.2 rpaulo return; 2632 1.15.4.2 rpaulo } 2633 1.15.4.2 rpaulo 2634 1.15.4.2 rpaulo mapping = malloc(sizeof(*mapping) * FILEBUFSECT, M_TEMP, M_WAITOK); 2635 1.15.4.2 rpaulo 2636 1.15.4.2 rpaulo error = 0; 2637 1.15.4.2 rpaulo DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 2638 1.15.4.2 rpaulo error = udf_translate_file_extent(node, from, sectors, mapping); 2639 1.15.4.2 rpaulo if (error) { 2640 1.15.4.2 rpaulo buf->b_error = error; 2641 1.15.4.2 rpaulo buf->b_flags |= B_ERROR; 2642 1.15.4.2 rpaulo biodone(buf); 2643 1.15.4.2 rpaulo goto out; 2644 1.15.4.2 rpaulo } 2645 1.15.4.2 rpaulo DPRINTF(READ, ("\ttranslate extent went OK\n")); 2646 1.15.4.2 rpaulo 2647 1.15.4.2 rpaulo /* pre-check if internal or parts are zero */ 2648 1.15.4.2 rpaulo if (*mapping == UDF_TRANS_INTERN) { 2649 1.15.4.2 rpaulo error = udf_read_internal(node, (uint8_t *) buf->b_data); 2650 1.15.4.2 rpaulo if (error) { 2651 1.15.4.2 rpaulo buf->b_error = error; 2652 1.15.4.2 rpaulo buf->b_flags |= B_ERROR; 2653 1.15.4.2 rpaulo } 2654 1.15.4.2 rpaulo biodone(buf); 2655 1.15.4.2 rpaulo goto out; 2656 1.15.4.2 rpaulo } 2657 1.15.4.2 rpaulo DPRINTF(READ, ("\tnot intern\n")); 2658 1.15.4.2 rpaulo 2659 1.15.4.2 rpaulo /* request read-in of data from disc sheduler */ 2660 1.15.4.2 rpaulo buf->b_resid = buf->b_bcount; 2661 1.15.4.2 rpaulo for (sector = 0; sector < sectors; sector++) { 2662 1.15.4.2 rpaulo buf_offset = sector * sector_size; 2663 1.15.4.2 rpaulo buf_pos = (uint8_t *) buf->b_data + buf_offset; 2664 1.15.4.2 rpaulo DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 2665 1.15.4.2 rpaulo 2666 1.15.4.2 rpaulo switch (mapping[sector]) { 2667 1.15.4.2 rpaulo case UDF_TRANS_UNMAPPED: 2668 1.15.4.2 rpaulo case UDF_TRANS_ZERO: 2669 1.15.4.2 rpaulo /* copy zero sector */ 2670 1.15.4.2 rpaulo memset(buf_pos, 0, sector_size); 2671 1.15.4.2 rpaulo DPRINTF(READ, ("\treturning zero sector\n")); 2672 1.15.4.2 rpaulo nestiobuf_done(buf, sector_size, 0); 2673 1.15.4.2 rpaulo break; 2674 1.15.4.2 rpaulo default : 2675 1.15.4.2 rpaulo DPRINTF(READ, ("\tread sector " 2676 1.15.4.2 rpaulo "%"PRIu64"\n", mapping[sector])); 2677 1.15.4.2 rpaulo 2678 1.15.4.2 rpaulo run_start = mapping[sector]; 2679 1.15.4.2 rpaulo run_length = 1; 2680 1.15.4.2 rpaulo while (sector < sectors-1) { 2681 1.15.4.2 rpaulo if (mapping[sector+1] != mapping[sector]+1) 2682 1.15.4.2 rpaulo break; 2683 1.15.4.2 rpaulo run_length++; 2684 1.15.4.2 rpaulo sector++; 2685 1.15.4.2 rpaulo } 2686 1.15.4.2 rpaulo 2687 1.15.4.2 rpaulo /* 2688 1.15.4.2 rpaulo * nest an iobuf and mark it for async reading. Since 2689 1.15.4.2 rpaulo * we're using nested buffers, they can't be cached by 2690 1.15.4.2 rpaulo * design. 2691 1.15.4.2 rpaulo */ 2692 1.15.4.2 rpaulo rbuflen = run_length * sector_size; 2693 1.15.4.2 rpaulo rblk = run_start * (sector_size/DEV_BSIZE); 2694 1.15.4.2 rpaulo 2695 1.15.4.2 rpaulo nestbuf = getiobuf(); 2696 1.15.4.2 rpaulo nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 2697 1.15.4.2 rpaulo /* nestbuf is B_ASYNC */ 2698 1.15.4.2 rpaulo 2699 1.15.4.2 rpaulo /* CD shedules on raw blkno */ 2700 1.15.4.2 rpaulo nestbuf->b_blkno = rblk; 2701 1.15.4.2 rpaulo nestbuf->b_proc = NULL; 2702 1.15.4.2 rpaulo nestbuf->b_cylinder = 0; 2703 1.15.4.2 rpaulo nestbuf->b_rawblkno = rblk; 2704 1.15.4.2 rpaulo VOP_STRATEGY(node->ump->devvp, nestbuf); 2705 1.15.4.2 rpaulo } 2706 1.15.4.2 rpaulo } 2707 1.15.4.2 rpaulo out: 2708 1.15.4.2 rpaulo DPRINTF(READ, ("\tend of read_filebuf\n")); 2709 1.15.4.2 rpaulo free(mapping, M_TEMP); 2710 1.15.4.2 rpaulo return; 2711 1.15.4.2 rpaulo } 2712 1.15.4.2 rpaulo #undef FILEBUFSECT 2713 1.15.4.2 rpaulo 2714 1.15.4.2 rpaulo 2715 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2716 1.15.4.2 rpaulo 2717 1.15.4.2 rpaulo /* 2718 1.15.4.2 rpaulo * Translate an extent (in sectors) into sector numbers; used for read and 2719 1.15.4.2 rpaulo * write operations. DOESNT't check extents. 2720 1.15.4.2 rpaulo */ 2721 1.15.4.2 rpaulo 2722 1.15.4.2 rpaulo int 2723 1.15.4.2 rpaulo udf_translate_file_extent(struct udf_node *node, 2724 1.15.4.2 rpaulo uint32_t from, uint32_t pages, 2725 1.15.4.2 rpaulo uint64_t *map) 2726 1.15.4.2 rpaulo { 2727 1.15.4.2 rpaulo struct udf_mount *ump; 2728 1.15.4.2 rpaulo struct file_entry *fe; 2729 1.15.4.2 rpaulo struct extfile_entry *efe; 2730 1.15.4.2 rpaulo struct short_ad *s_ad; 2731 1.15.4.2 rpaulo struct long_ad *l_ad, t_ad; 2732 1.15.4.2 rpaulo uint64_t transsec; 2733 1.15.4.2 rpaulo uint32_t sector_size, transsec32; 2734 1.15.4.2 rpaulo uint32_t overlap, translen; 2735 1.15.4.2 rpaulo uint32_t vpart_num, lb_num, len, alloclen; 2736 1.15.4.2 rpaulo uint8_t *pos; 2737 1.15.4.2 rpaulo int error, flags, addr_type, icblen, icbflags; 2738 1.15.4.2 rpaulo 2739 1.15.4.2 rpaulo if (!node) 2740 1.15.4.2 rpaulo return ENOENT; 2741 1.15.4.2 rpaulo 2742 1.15.4.2 rpaulo /* shut up gcc */ 2743 1.15.4.2 rpaulo alloclen = addr_type = icbflags = 0; 2744 1.15.4.2 rpaulo pos = NULL; 2745 1.15.4.2 rpaulo 2746 1.15.4.2 rpaulo /* do the work */ 2747 1.15.4.2 rpaulo ump = node->ump; 2748 1.15.4.2 rpaulo sector_size = ump->discinfo.sector_size; 2749 1.15.4.2 rpaulo fe = node->fe; 2750 1.15.4.2 rpaulo efe = node->efe; 2751 1.15.4.2 rpaulo if (fe) { 2752 1.15.4.2 rpaulo alloclen = udf_rw32(fe->l_ad); 2753 1.15.4.2 rpaulo pos = &fe->data[0] + udf_rw32(fe->l_ea); 2754 1.15.4.2 rpaulo icbflags = udf_rw16(fe->icbtag.flags); 2755 1.15.4.2 rpaulo } 2756 1.15.4.2 rpaulo if (efe) { 2757 1.15.4.2 rpaulo alloclen = udf_rw32(efe->l_ad); 2758 1.15.4.2 rpaulo pos = &efe->data[0] + udf_rw32(efe->l_ea); 2759 1.15.4.2 rpaulo icbflags = udf_rw16(efe->icbtag.flags); 2760 1.15.4.2 rpaulo } 2761 1.15.4.2 rpaulo addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 2762 1.15.4.2 rpaulo 2763 1.15.4.2 rpaulo DPRINTF(TRANSLATE, ("udf trans: alloc_len = %d, addr_type %d, " 2764 1.15.4.2 rpaulo "fe %p, efe %p\n", alloclen, addr_type, fe, efe)); 2765 1.15.4.2 rpaulo 2766 1.15.4.2 rpaulo vpart_num = udf_rw16(node->loc.loc.part_num); 2767 1.15.4.2 rpaulo lb_num = len = icblen = 0; /* shut up gcc */ 2768 1.15.4.2 rpaulo while (pages && alloclen) { 2769 1.15.4.2 rpaulo DPRINTF(TRANSLATE, ("\taddr_type %d\n", addr_type)); 2770 1.15.4.2 rpaulo switch (addr_type) { 2771 1.15.4.2 rpaulo case UDF_ICB_INTERN_ALLOC : 2772 1.15.4.2 rpaulo /* TODO check extents? */ 2773 1.15.4.2 rpaulo *map = UDF_TRANS_INTERN; 2774 1.15.4.2 rpaulo return 0; 2775 1.15.4.2 rpaulo case UDF_ICB_SHORT_ALLOC : 2776 1.15.4.2 rpaulo icblen = sizeof(struct short_ad); 2777 1.15.4.2 rpaulo s_ad = (struct short_ad *) pos; 2778 1.15.4.2 rpaulo len = udf_rw32(s_ad->len); 2779 1.15.4.2 rpaulo lb_num = udf_rw32(s_ad->lb_num); 2780 1.15.4.2 rpaulo break; 2781 1.15.4.2 rpaulo case UDF_ICB_LONG_ALLOC : 2782 1.15.4.2 rpaulo icblen = sizeof(struct long_ad); 2783 1.15.4.2 rpaulo l_ad = (struct long_ad *) pos; 2784 1.15.4.2 rpaulo len = udf_rw32(l_ad->len); 2785 1.15.4.2 rpaulo lb_num = udf_rw32(l_ad->loc.lb_num); 2786 1.15.4.2 rpaulo vpart_num = udf_rw16(l_ad->loc.part_num); 2787 1.15.4.2 rpaulo DPRINTFIF(TRANSLATE, 2788 1.15.4.2 rpaulo (l_ad->impl.im_used.flags & 2789 1.15.4.2 rpaulo UDF_ADIMP_FLAGS_EXTENT_ERASED), 2790 1.15.4.2 rpaulo ("UDF: got an `extent erased' flag in long_ad\n")); 2791 1.15.4.2 rpaulo break; 2792 1.15.4.2 rpaulo default: 2793 1.15.4.2 rpaulo /* can't be here */ 2794 1.15.4.2 rpaulo return EINVAL; /* for sure */ 2795 1.15.4.2 rpaulo } 2796 1.15.4.2 rpaulo 2797 1.15.4.2 rpaulo /* process extent */ 2798 1.15.4.2 rpaulo flags = UDF_EXT_FLAGS(len); 2799 1.15.4.2 rpaulo len = UDF_EXT_LEN(len); 2800 1.15.4.2 rpaulo 2801 1.15.4.2 rpaulo overlap = (len + sector_size -1) / sector_size; 2802 1.15.4.2 rpaulo if (from) { 2803 1.15.4.2 rpaulo if (from > overlap) { 2804 1.15.4.2 rpaulo from -= overlap; 2805 1.15.4.2 rpaulo overlap = 0; 2806 1.15.4.2 rpaulo } else { 2807 1.15.4.2 rpaulo lb_num += from; /* advance in extent */ 2808 1.15.4.2 rpaulo overlap -= from; 2809 1.15.4.2 rpaulo from = 0; 2810 1.15.4.2 rpaulo } 2811 1.15.4.2 rpaulo } 2812 1.15.4.2 rpaulo 2813 1.15.4.2 rpaulo overlap = MIN(overlap, pages); 2814 1.15.4.2 rpaulo while (overlap) { 2815 1.15.4.2 rpaulo switch (flags) { 2816 1.15.4.2 rpaulo case UDF_EXT_REDIRECT : 2817 1.15.4.2 rpaulo /* no support for allocation extentions yet */ 2818 1.15.4.2 rpaulo /* TODO support for allocation extention */ 2819 1.15.4.2 rpaulo return ENOENT; 2820 1.15.4.2 rpaulo case UDF_EXT_FREED : 2821 1.15.4.2 rpaulo case UDF_EXT_FREE : 2822 1.15.4.2 rpaulo transsec = UDF_TRANS_ZERO; 2823 1.15.4.2 rpaulo translen = overlap; 2824 1.15.4.2 rpaulo while (overlap && pages && translen) { 2825 1.15.4.2 rpaulo *map++ = transsec; 2826 1.15.4.2 rpaulo overlap--; pages--; translen--; 2827 1.15.4.2 rpaulo } 2828 1.15.4.2 rpaulo break; 2829 1.15.4.2 rpaulo case UDF_EXT_ALLOCATED : 2830 1.15.4.2 rpaulo t_ad.loc.lb_num = udf_rw32(lb_num); 2831 1.15.4.2 rpaulo t_ad.loc.part_num = udf_rw16(vpart_num); 2832 1.15.4.2 rpaulo error = udf_translate_vtop(ump, 2833 1.15.4.2 rpaulo &t_ad, &transsec32, &translen); 2834 1.15.4.2 rpaulo transsec = transsec32; 2835 1.15.4.2 rpaulo if (error) 2836 1.15.4.2 rpaulo return error; 2837 1.15.4.2 rpaulo while (overlap && pages && translen) { 2838 1.15.4.2 rpaulo *map++ = transsec; 2839 1.15.4.2 rpaulo transsec++; 2840 1.15.4.2 rpaulo overlap--; pages--; translen--; 2841 1.15.4.2 rpaulo } 2842 1.15.4.2 rpaulo break; 2843 1.15.4.2 rpaulo } 2844 1.15.4.2 rpaulo } 2845 1.15.4.2 rpaulo pos += icblen; 2846 1.15.4.2 rpaulo alloclen -= icblen; 2847 1.15.4.2 rpaulo } 2848 1.15.4.2 rpaulo return 0; 2849 1.15.4.2 rpaulo } 2850 1.15.4.2 rpaulo 2851 1.15.4.2 rpaulo /* --------------------------------------------------------------------- */ 2852 1.15.4.2 rpaulo 2853
Indexes created Mon Sep 29 21:09:56 GMT 2025