| File: | isofs/cd9660/cd9660_rrip.c |
| Warning: | line 227, column 2 Value stored to 'wlen' is never read |
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| 1 | /* $OpenBSD: cd9660_rrip.c,v 1.17 2023/03/08 04:43:08 guenther Exp $ */ |
| 2 | /* $NetBSD: cd9660_rrip.c,v 1.17 1997/01/24 00:27:32 cgd Exp $ */ |
| 3 | |
| 4 | /*- |
| 5 | * Copyright (c) 1993, 1994 |
| 6 | * The Regents of the University of California. All rights reserved. |
| 7 | * |
| 8 | * This code is derived from software contributed to Berkeley |
| 9 | * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension |
| 10 | * Support code is derived from software contributed to Berkeley |
| 11 | * by Atsushi Murai (amurai@spec.co.jp). |
| 12 | * |
| 13 | * Redistribution and use in source and binary forms, with or without |
| 14 | * modification, are permitted provided that the following conditions |
| 15 | * are met: |
| 16 | * 1. Redistributions of source code must retain the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer. |
| 18 | * 2. Redistributions in binary form must reproduce the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer in the |
| 20 | * documentation and/or other materials provided with the distribution. |
| 21 | * 3. Neither the name of the University nor the names of its contributors |
| 22 | * may be used to endorse or promote products derived from this software |
| 23 | * without specific prior written permission. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 35 | * SUCH DAMAGE. |
| 36 | * |
| 37 | * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94 |
| 38 | */ |
| 39 | |
| 40 | #include <sys/param.h> |
| 41 | #include <sys/systm.h> |
| 42 | #include <sys/namei.h> |
| 43 | #include <sys/buf.h> |
| 44 | #include <sys/vnode.h> |
| 45 | #include <sys/lock.h> |
| 46 | #include <sys/mount.h> |
| 47 | #include <sys/kernel.h> |
| 48 | #include <sys/stat.h> |
| 49 | #include <sys/time.h> |
| 50 | |
| 51 | #include <isofs/cd9660/iso.h> |
| 52 | #include <isofs/cd9660/cd9660_extern.h> |
| 53 | #include <isofs/cd9660/cd9660_node.h> |
| 54 | #include <isofs/cd9660/cd9660_rrip.h> |
| 55 | #include <isofs/cd9660/iso_rrip.h> |
| 56 | |
| 57 | typedef struct { |
| 58 | char type[2]; |
| 59 | int (*func)(void *, ISO_RRIP_ANALYZE *); |
| 60 | void (*func2)(void *, ISO_RRIP_ANALYZE *); |
| 61 | int result; |
| 62 | } RRIP_TABLE; |
| 63 | |
| 64 | static int cd9660_rrip_attr(void *, ISO_RRIP_ANALYZE *); |
| 65 | static void cd9660_rrip_defattr(void *, ISO_RRIP_ANALYZE *); |
| 66 | static int cd9660_rrip_slink(void *, ISO_RRIP_ANALYZE *); |
| 67 | static int cd9660_rrip_altname(void *, ISO_RRIP_ANALYZE *); |
| 68 | static void cd9660_rrip_defname(void *, ISO_RRIP_ANALYZE *); |
| 69 | static int cd9660_rrip_pclink(void *, ISO_RRIP_ANALYZE *); |
| 70 | static int cd9660_rrip_reldir(void *, ISO_RRIP_ANALYZE *); |
| 71 | static int cd9660_rrip_tstamp(void *, ISO_RRIP_ANALYZE *); |
| 72 | static void cd9660_rrip_deftstamp(void *, ISO_RRIP_ANALYZE *); |
| 73 | static int cd9660_rrip_device(void *, ISO_RRIP_ANALYZE *); |
| 74 | static int cd9660_rrip_idflag(void *, ISO_RRIP_ANALYZE *); |
| 75 | static int cd9660_rrip_cont(void *, ISO_RRIP_ANALYZE *); |
| 76 | static int cd9660_rrip_stop(void *, ISO_RRIP_ANALYZE *); |
| 77 | static int cd9660_rrip_extref(void *, ISO_RRIP_ANALYZE *); |
| 78 | static int cd9660_rrip_loop(struct iso_directory_record *, |
| 79 | ISO_RRIP_ANALYZE *, RRIP_TABLE *); |
| 80 | /* |
| 81 | * POSIX file attribute |
| 82 | */ |
| 83 | static int |
| 84 | cd9660_rrip_attr(void *v, ISO_RRIP_ANALYZE *ana) |
| 85 | { |
| 86 | ISO_RRIP_ATTR *p = v; |
| 87 | |
| 88 | ana->inop->inode.iso_mode = isonum_733(p->mode); |
| 89 | ana->inop->inode.iso_uid = isonum_733(p->uid); |
| 90 | ana->inop->inode.iso_gid = isonum_733(p->gid); |
| 91 | ana->inop->inode.iso_links = isonum_733(p->links); |
| 92 | ana->fields &= ~ISO_SUSP_ATTR0x0001; |
| 93 | return (ISO_SUSP_ATTR0x0001); |
| 94 | } |
| 95 | |
| 96 | static void |
| 97 | cd9660_rrip_defattr(void *v, ISO_RRIP_ANALYZE *ana) |
| 98 | { |
| 99 | struct iso_directory_record *isodir = v; |
| 100 | |
| 101 | /* But this is a required field! */ |
| 102 | printf("RRIP without PX field?\n"); |
| 103 | cd9660_defattr(isodir, ana->inop, NULL((void *)0)); |
| 104 | } |
| 105 | |
| 106 | /* |
| 107 | * Symbolic Links |
| 108 | */ |
| 109 | static int |
| 110 | cd9660_rrip_slink(void *v, ISO_RRIP_ANALYZE *ana) |
| 111 | { |
| 112 | ISO_RRIP_SLINK *p = v; |
| 113 | ISO_RRIP_SLINK_COMPONENT *pcomp; |
| 114 | ISO_RRIP_SLINK_COMPONENT *pcompe; |
| 115 | int len, wlen, cont; |
| 116 | char *outbuf, *inbuf; |
| 117 | |
| 118 | pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component; |
| 119 | pcompe = |
| 120 | (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length)); |
| 121 | len = *ana->outlen; |
| 122 | outbuf = ana->outbuf; |
| 123 | cont = ana->cont; |
| 124 | |
| 125 | /* |
| 126 | * Gathering a Symbolic name from each component with path |
| 127 | */ |
| 128 | for (; pcomp < pcompe; |
| 129 | pcomp = (ISO_RRIP_SLINK_COMPONENT *) |
| 130 | ((char *)pcomp + ISO_RRIP_SLSIZ2 + isonum_711(pcomp->clen))) { |
| 131 | |
| 132 | if (!cont) { |
| 133 | if (len < ana->maxlen) { |
| 134 | len++; |
| 135 | *outbuf++ = '/'; |
| 136 | } |
| 137 | } |
| 138 | cont = 0; |
| 139 | |
| 140 | inbuf = ".."; |
| 141 | wlen = 0; |
| 142 | |
| 143 | switch (*pcomp->cflag) { |
| 144 | |
| 145 | case ISO_SUSP_CFLAG_CURRENT0x02: |
| 146 | /* Inserting Current */ |
| 147 | wlen = 1; |
| 148 | break; |
| 149 | |
| 150 | case ISO_SUSP_CFLAG_PARENT0x04: |
| 151 | /* Inserting Parent */ |
| 152 | wlen = 2; |
| 153 | break; |
| 154 | |
| 155 | case ISO_SUSP_CFLAG_ROOT0x08: |
| 156 | /* Inserting slash for ROOT */ |
| 157 | /* start over from beginning(?) */ |
| 158 | outbuf -= len; |
| 159 | len = 0; |
| 160 | break; |
| 161 | |
| 162 | case ISO_SUSP_CFLAG_VOLROOT0x10: |
| 163 | /* Inserting a mount point i.e. "/cdrom" */ |
| 164 | /* same as above */ |
| 165 | outbuf -= len; |
| 166 | len = 0; |
| 167 | inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname; |
| 168 | wlen = strlen(inbuf); |
| 169 | break; |
| 170 | |
| 171 | case ISO_SUSP_CFLAG_HOST0x20: |
| 172 | /* Inserting hostname i.e. "kurt.tools.de" */ |
| 173 | inbuf = hostname; |
| 174 | wlen = hostnamelen; |
| 175 | break; |
| 176 | |
| 177 | case ISO_SUSP_CFLAG_CONTINUE0x01: |
| 178 | cont = 1; |
| 179 | /* FALLTHROUGH */ |
| 180 | case 0: |
| 181 | /* Inserting component */ |
| 182 | wlen = isonum_711(pcomp->clen); |
| 183 | inbuf = pcomp->name; |
| 184 | break; |
| 185 | default: |
| 186 | printf("RRIP with incorrect flags?"); |
| 187 | wlen = ana->maxlen + 1; |
| 188 | break; |
| 189 | } |
| 190 | |
| 191 | if (len + wlen > ana->maxlen) { |
| 192 | /* indicate error to caller */ |
| 193 | ana->cont = 1; |
| 194 | ana->fields = 0; |
| 195 | ana->outbuf -= *ana->outlen; |
| 196 | *ana->outlen = 0; |
| 197 | return (0); |
| 198 | } |
| 199 | |
| 200 | bcopy(inbuf, outbuf, wlen); |
| 201 | outbuf += wlen; |
| 202 | len += wlen; |
| 203 | } |
| 204 | ana->outbuf = outbuf; |
| 205 | *ana->outlen = len; |
| 206 | ana->cont = cont; |
| 207 | |
| 208 | if (!isonum_711(p->flags)) { |
| 209 | ana->fields &= ~ISO_SUSP_SLINK0x0004; |
| 210 | return (ISO_SUSP_SLINK0x0004); |
| 211 | } |
| 212 | return (0); |
| 213 | } |
| 214 | |
| 215 | /* |
| 216 | * Alternate name |
| 217 | */ |
| 218 | static int |
| 219 | cd9660_rrip_altname(void *v, ISO_RRIP_ANALYZE *ana) |
| 220 | { |
| 221 | ISO_RRIP_ALTNAME *p = v; |
| 222 | char *inbuf; |
| 223 | int wlen; |
| 224 | int cont; |
| 225 | |
| 226 | inbuf = ".."; |
| 227 | wlen = 0; |
Value stored to 'wlen' is never read | |
| 228 | cont = 0; |
| 229 | |
| 230 | switch (*p->flags) { |
| 231 | case ISO_SUSP_CFLAG_CURRENT0x02: |
| 232 | /* Inserting Current */ |
| 233 | wlen = 1; |
| 234 | break; |
| 235 | |
| 236 | case ISO_SUSP_CFLAG_PARENT0x04: |
| 237 | /* Inserting Parent */ |
| 238 | wlen = 2; |
| 239 | break; |
| 240 | |
| 241 | case ISO_SUSP_CFLAG_HOST0x20: |
| 242 | /* Inserting hostname i.e. "kurt.tools.de" */ |
| 243 | inbuf = hostname; |
| 244 | wlen = hostnamelen; |
| 245 | break; |
| 246 | |
| 247 | case ISO_SUSP_CFLAG_CONTINUE0x01: |
| 248 | cont = 1; |
| 249 | /* FALLTHROUGH */ |
| 250 | case 0: |
| 251 | /* Inserting component */ |
| 252 | wlen = isonum_711(p->h.length) - 5; |
| 253 | inbuf = (char *)p + 5; |
| 254 | break; |
| 255 | |
| 256 | default: |
| 257 | printf("RRIP with incorrect NM flags?\n"); |
| 258 | wlen = ana->maxlen + 1; |
| 259 | break; |
| 260 | } |
| 261 | |
| 262 | if ((*ana->outlen += wlen) > ana->maxlen) { |
| 263 | /* treat as no name field */ |
| 264 | ana->fields &= ~ISO_SUSP_ALTNAME0x0008; |
| 265 | ana->outbuf -= *ana->outlen - wlen; |
| 266 | *ana->outlen = 0; |
| 267 | return (0); |
| 268 | } |
| 269 | |
| 270 | bcopy(inbuf, ana->outbuf, wlen); |
| 271 | ana->outbuf += wlen; |
| 272 | |
| 273 | if (!cont) { |
| 274 | ana->fields &= ~ISO_SUSP_ALTNAME0x0008; |
| 275 | return (ISO_SUSP_ALTNAME0x0008); |
| 276 | } |
| 277 | return (0); |
| 278 | } |
| 279 | |
| 280 | static void |
| 281 | cd9660_rrip_defname(void *v, ISO_RRIP_ANALYZE *ana) |
| 282 | { |
| 283 | struct iso_directory_record *isodir = v; |
| 284 | |
| 285 | strlcpy(ana->outbuf, "..", ana->maxlen - *ana->outlen); |
| 286 | switch (*isodir->name) { |
| 287 | default: |
| 288 | isofntrans(isodir->name, isonum_711(isodir->name_len), |
| 289 | ana->outbuf, ana->outlen, 1, |
| 290 | isonum_711(isodir->flags) & 4, ana->imp->joliet_level); |
| 291 | break; |
| 292 | case 0: |
| 293 | *ana->outlen = 1; |
| 294 | break; |
| 295 | case 1: |
| 296 | *ana->outlen = 2; |
| 297 | break; |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * Parent or Child Link |
| 303 | */ |
| 304 | static int |
| 305 | cd9660_rrip_pclink(void *v, ISO_RRIP_ANALYZE *ana) |
| 306 | { |
| 307 | ISO_RRIP_CLINK *p = v; |
| 308 | |
| 309 | *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift; |
| 310 | ana->fields &= ~(ISO_SUSP_CLINK0x0010 | ISO_SUSP_PLINK0x0020); |
| 311 | return (*p->h.type == 'C' ? ISO_SUSP_CLINK0x0010 : ISO_SUSP_PLINK0x0020); |
| 312 | } |
| 313 | |
| 314 | /* |
| 315 | * Relocated directory |
| 316 | */ |
| 317 | static int |
| 318 | cd9660_rrip_reldir(void *v, ISO_RRIP_ANALYZE *ana) |
| 319 | { |
| 320 | /* special hack to make caller aware of RE field */ |
| 321 | *ana->outlen = 0; |
| 322 | ana->fields = 0; |
| 323 | return (ISO_SUSP_RELDIR0x0040 | ISO_SUSP_ALTNAME0x0008 | ISO_SUSP_CLINK0x0010 | |
| 324 | ISO_SUSP_PLINK0x0020); |
| 325 | } |
| 326 | |
| 327 | static int |
| 328 | cd9660_rrip_tstamp(void *v, ISO_RRIP_ANALYZE *ana) |
| 329 | { |
| 330 | ISO_RRIP_TSTAMP *p = v; |
| 331 | u_char *ptime; |
| 332 | |
| 333 | ptime = p->time; |
| 334 | |
| 335 | /* Check a format of time stamp (7bytes/17bytes) */ |
| 336 | if (!(*p->flags & ISO_SUSP_TSTAMP_FORM170x80)) { |
| 337 | if (*p->flags & ISO_SUSP_TSTAMP_CREAT0x01) |
| 338 | ptime += 7; |
| 339 | |
| 340 | if (*p->flags & ISO_SUSP_TSTAMP_MODIFY0x02) { |
| 341 | cd9660_tstamp_conv7(ptime, |
| 342 | &ana->inop->inode.iso_mtime); |
| 343 | ptime += 7; |
| 344 | } else |
| 345 | bzero(&ana->inop->inode.iso_mtime,__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof (struct timespec))) |
| 346 | sizeof(struct timespec))__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof (struct timespec))); |
| 347 | |
| 348 | if (*p->flags & ISO_SUSP_TSTAMP_ACCESS0x04) { |
| 349 | cd9660_tstamp_conv7(ptime, |
| 350 | &ana->inop->inode.iso_atime); |
| 351 | ptime += 7; |
| 352 | } else |
| 353 | ana->inop->inode.iso_atime = |
| 354 | ana->inop->inode.iso_mtime; |
| 355 | |
| 356 | if (*p->flags & ISO_SUSP_TSTAMP_ATTR0x08) |
| 357 | cd9660_tstamp_conv7(ptime, |
| 358 | &ana->inop->inode.iso_ctime); |
| 359 | else |
| 360 | ana->inop->inode.iso_ctime = |
| 361 | ana->inop->inode.iso_mtime; |
| 362 | |
| 363 | } else { |
| 364 | if (*p->flags & ISO_SUSP_TSTAMP_CREAT0x01) |
| 365 | ptime += 17; |
| 366 | |
| 367 | if (*p->flags & ISO_SUSP_TSTAMP_MODIFY0x02) { |
| 368 | cd9660_tstamp_conv17(ptime, |
| 369 | &ana->inop->inode.iso_mtime); |
| 370 | ptime += 17; |
| 371 | } else |
| 372 | bzero(&ana->inop->inode.iso_mtime,__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof (struct timespec))) |
| 373 | sizeof(struct timespec))__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof (struct timespec))); |
| 374 | |
| 375 | if (*p->flags & ISO_SUSP_TSTAMP_ACCESS0x04) { |
| 376 | cd9660_tstamp_conv17(ptime, |
| 377 | &ana->inop->inode.iso_atime); |
| 378 | ptime += 17; |
| 379 | } else |
| 380 | ana->inop->inode.iso_atime = |
| 381 | ana->inop->inode.iso_mtime; |
| 382 | |
| 383 | if (*p->flags & ISO_SUSP_TSTAMP_ATTR0x08) |
| 384 | cd9660_tstamp_conv17(ptime, |
| 385 | &ana->inop->inode.iso_ctime); |
| 386 | else |
| 387 | ana->inop->inode.iso_ctime = |
| 388 | ana->inop->inode.iso_mtime; |
| 389 | |
| 390 | } |
| 391 | ana->fields &= ~ISO_SUSP_TSTAMP0x0080; |
| 392 | return (ISO_SUSP_TSTAMP0x0080); |
| 393 | } |
| 394 | |
| 395 | static void |
| 396 | cd9660_rrip_deftstamp(void *v, ISO_RRIP_ANALYZE *ana) |
| 397 | { |
| 398 | struct iso_directory_record *isodir = v; |
| 399 | |
| 400 | cd9660_deftstamp(isodir, ana->inop, NULL((void *)0)); |
| 401 | } |
| 402 | |
| 403 | /* |
| 404 | * POSIX device modes |
| 405 | */ |
| 406 | static int |
| 407 | cd9660_rrip_device(void *v, ISO_RRIP_ANALYZE *ana) |
| 408 | { |
| 409 | ISO_RRIP_DEVICE *p = v; |
| 410 | u_int high, low; |
| 411 | |
| 412 | high = isonum_733(p->dev_t_high); |
| 413 | low = isonum_733(p->dev_t_low); |
| 414 | |
| 415 | if (high == 0) |
| 416 | ana->inop->inode.iso_rdev = makedev(major(low), minor(low))((dev_t)(((((((unsigned)(low) >> 8) & 0xff)) & 0xff ) << 8) | ((((unsigned)((low) & 0xff) | (((low) & 0xffff0000) >> 8))) & 0xff) | (((((unsigned)((low) & 0xff) | (((low) & 0xffff0000) >> 8))) & 0xffff00 ) << 8))); |
| 417 | else |
| 418 | ana->inop->inode.iso_rdev = makedev(high, minor(low))((dev_t)((((high) & 0xff) << 8) | ((((unsigned)((low ) & 0xff) | (((low) & 0xffff0000) >> 8))) & 0xff) | (((((unsigned)((low) & 0xff) | (((low) & 0xffff0000 ) >> 8))) & 0xffff00) << 8))); |
| 419 | ana->fields &= ~ISO_SUSP_DEVICE0x0002; |
| 420 | return (ISO_SUSP_DEVICE0x0002); |
| 421 | } |
| 422 | |
| 423 | /* |
| 424 | * Flag indicating |
| 425 | */ |
| 426 | static int |
| 427 | cd9660_rrip_idflag(void *v, ISO_RRIP_ANALYZE *ana) |
| 428 | { |
| 429 | ISO_RRIP_IDFLAG *p = v; |
| 430 | |
| 431 | /* don't touch high bits */ |
| 432 | ana->fields &= isonum_711(p->flags) | ~0xff; |
| 433 | /* special handling of RE field */ |
| 434 | if (ana->fields & ISO_SUSP_RELDIR0x0040) |
| 435 | return (cd9660_rrip_reldir(p, ana)); |
| 436 | |
| 437 | return (ISO_SUSP_IDFLAG0x0100); |
| 438 | } |
| 439 | |
| 440 | /* |
| 441 | * Continuation pointer |
| 442 | */ |
| 443 | static int |
| 444 | cd9660_rrip_cont(void *v, ISO_RRIP_ANALYZE *ana) |
| 445 | { |
| 446 | ISO_RRIP_CONT *p = v; |
| 447 | |
| 448 | ana->iso_ce_blk = isonum_733(p->location); |
| 449 | ana->iso_ce_off = isonum_733(p->offset); |
| 450 | ana->iso_ce_len = isonum_733(p->length); |
| 451 | return (ISO_SUSP_CONT0x0400); |
| 452 | } |
| 453 | |
| 454 | /* |
| 455 | * System Use end |
| 456 | */ |
| 457 | static int |
| 458 | cd9660_rrip_stop(void *v, ISO_RRIP_ANALYZE *ana) |
| 459 | { |
| 460 | return (ISO_SUSP_STOP0x1000); |
| 461 | } |
| 462 | |
| 463 | /* |
| 464 | * Extension reference |
| 465 | */ |
| 466 | static int |
| 467 | cd9660_rrip_extref(void *v, ISO_RRIP_ANALYZE *ana) |
| 468 | { |
| 469 | ISO_RRIP_EXTREF *p = v; |
| 470 | |
| 471 | if (isonum_711(p->version) != 1) |
| 472 | return (0); |
| 473 | if (isonum_711(p->len_id) != 9 && |
| 474 | isonum_711(p->len_id) != 10) |
| 475 | return (0); |
| 476 | if (isonum_711(p->len_id) == 9 && |
| 477 | bcmp((char *)p + 8, "IEEE_1282", 9)) |
| 478 | return (0); |
| 479 | if (isonum_711(p->len_id) == 10 && |
| 480 | bcmp((char *)p + 8, "IEEE_P1282", 10) && |
| 481 | bcmp((char *)p + 8, "RRIP_1991A", 10)) |
| 482 | return (0); |
| 483 | ana->fields &= ~ISO_SUSP_EXTREF0x0200; |
| 484 | return (ISO_SUSP_EXTREF0x0200); |
| 485 | } |
| 486 | |
| 487 | |
| 488 | static int |
| 489 | cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana, |
| 490 | RRIP_TABLE *table) |
| 491 | { |
| 492 | RRIP_TABLE *ptable; |
| 493 | ISO_SUSP_HEADER *phead; |
| 494 | ISO_SUSP_HEADER *pend; |
| 495 | struct buf *bp = NULL((void *)0); |
| 496 | char *pwhead; |
| 497 | u_char c; |
| 498 | int result; |
| 499 | |
| 500 | /* |
| 501 | * Note: If name length is odd, |
| 502 | * it will be padded by 1 byte after the name |
| 503 | */ |
| 504 | pwhead = isodir->name + isonum_711(isodir->name_len); |
| 505 | if (!(isonum_711(isodir->name_len) & 1)) |
| 506 | pwhead++; |
| 507 | isochar(isodir->name, pwhead, ana->imp->joliet_level, &c); |
| 508 | |
| 509 | /* If it's not the '.' entry of the root dir obey SP field */ |
| 510 | if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent) |
| 511 | pwhead += ana->imp->rr_skip; |
| 512 | else |
| 513 | pwhead += ana->imp->rr_skip0; |
| 514 | |
| 515 | phead = (ISO_SUSP_HEADER *)pwhead; |
| 516 | pend = |
| 517 | (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length)); |
| 518 | |
| 519 | result = 0; |
| 520 | while (1) { |
| 521 | ana->iso_ce_len = 0; |
| 522 | /* |
| 523 | * Note: "pend" should be more than one SUSP header |
| 524 | */ |
| 525 | while (pend >= phead + 1) { |
| 526 | if (isonum_711(phead->version) == 1) { |
| 527 | for (ptable = table; ptable->func; ptable++) { |
| 528 | if (*phead->type == *ptable->type && |
| 529 | phead->type[1] == ptable->type[1]) |
| 530 | { |
| 531 | result |= |
| 532 | ptable->func(phead, ana); |
| 533 | break; |
| 534 | } |
| 535 | } |
| 536 | if (!ana->fields) |
| 537 | break; |
| 538 | } |
| 539 | if (result & ISO_SUSP_STOP0x1000) { |
| 540 | result &= ~ISO_SUSP_STOP0x1000; |
| 541 | break; |
| 542 | } |
| 543 | /* plausibility check */ |
| 544 | if (isonum_711(phead->length) < sizeof(*phead)) |
| 545 | break; |
| 546 | /* |
| 547 | * move to next SUSP |
| 548 | * Hopefully this works with newer versions, too |
| 549 | */ |
| 550 | phead = (ISO_SUSP_HEADER *) |
| 551 | ((char *)phead + isonum_711(phead->length)); |
| 552 | } |
| 553 | |
| 554 | if (ana->fields && ana->iso_ce_len) { |
| 555 | if (ana->iso_ce_blk >= ana->imp->volume_space_size || |
| 556 | ana->iso_ce_off + ana->iso_ce_len > |
| 557 | ana->imp->logical_block_size || |
| 558 | bread(ana->imp->im_devvp, ana->iso_ce_blk << |
| 559 | (ana->imp->im_bshift - DEV_BSHIFT9), |
| 560 | ana->imp->logical_block_size, &bp)) |
| 561 | /* what to do now? */ |
| 562 | break; |
| 563 | phead = |
| 564 | (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off); |
| 565 | pend = (ISO_SUSP_HEADER *) |
| 566 | ((char *)phead + ana->iso_ce_len); |
| 567 | } else |
| 568 | break; |
| 569 | } |
| 570 | if (bp) |
| 571 | brelse(bp); |
| 572 | /* |
| 573 | * If we don't find the Basic SUSP stuffs, just set default value |
| 574 | * (attribute/time stamp) |
| 575 | */ |
| 576 | for (ptable = table; ptable->func2; ptable++) |
| 577 | if (!(ptable->result & result)) |
| 578 | ptable->func2(isodir, ana); |
| 579 | |
| 580 | return (result); |
| 581 | } |
| 582 | |
| 583 | /* |
| 584 | * Get Attributes. |
| 585 | */ |
| 586 | static RRIP_TABLE rrip_table_analyze[] = { |
| 587 | { "PX", cd9660_rrip_attr, cd9660_rrip_defattr, |
| 588 | ISO_SUSP_ATTR0x0001 }, |
| 589 | { "TF", cd9660_rrip_tstamp, cd9660_rrip_deftstamp, |
| 590 | ISO_SUSP_TSTAMP0x0080 }, |
| 591 | { "PN", cd9660_rrip_device, 0, |
| 592 | ISO_SUSP_DEVICE0x0002 }, |
| 593 | { "RR", cd9660_rrip_idflag, 0, |
| 594 | ISO_SUSP_IDFLAG0x0100 }, |
| 595 | { "CE", cd9660_rrip_cont, 0, |
| 596 | ISO_SUSP_CONT0x0400 }, |
| 597 | { "ST", cd9660_rrip_stop, 0, |
| 598 | ISO_SUSP_STOP0x1000 }, |
| 599 | { "", 0, 0, |
| 600 | 0 } |
| 601 | }; |
| 602 | |
| 603 | int |
| 604 | cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop, |
| 605 | struct iso_mnt *imp) |
| 606 | { |
| 607 | ISO_RRIP_ANALYZE analyze; |
| 608 | |
| 609 | analyze.inop = inop; |
| 610 | analyze.imp = imp; |
| 611 | analyze.fields = ISO_SUSP_ATTR0x0001 | ISO_SUSP_TSTAMP0x0080 | ISO_SUSP_DEVICE0x0002; |
| 612 | |
| 613 | return (cd9660_rrip_loop(isodir, &analyze, rrip_table_analyze)); |
| 614 | } |
| 615 | |
| 616 | /* |
| 617 | * Get Alternate Name. |
| 618 | */ |
| 619 | static RRIP_TABLE rrip_table_getname[] = { |
| 620 | { "NM", cd9660_rrip_altname, cd9660_rrip_defname, |
| 621 | ISO_SUSP_ALTNAME0x0008 }, |
| 622 | { "CL", cd9660_rrip_pclink, 0, |
| 623 | ISO_SUSP_CLINK0x0010|ISO_SUSP_PLINK0x0020 }, |
| 624 | { "PL", cd9660_rrip_pclink, 0, |
| 625 | ISO_SUSP_CLINK0x0010|ISO_SUSP_PLINK0x0020 }, |
| 626 | { "RE", cd9660_rrip_reldir, 0, |
| 627 | ISO_SUSP_RELDIR0x0040 }, |
| 628 | { "RR", cd9660_rrip_idflag, 0, |
| 629 | ISO_SUSP_IDFLAG0x0100 }, |
| 630 | { "CE", cd9660_rrip_cont, 0, |
| 631 | ISO_SUSP_CONT0x0400 }, |
| 632 | { "ST", cd9660_rrip_stop, 0, |
| 633 | ISO_SUSP_STOP0x1000 }, |
| 634 | { "", 0, 0, |
| 635 | 0 } |
| 636 | }; |
| 637 | |
| 638 | int |
| 639 | cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf, |
| 640 | u_short *outlen, cdino_t *inump, struct iso_mnt *imp) |
| 641 | { |
| 642 | ISO_RRIP_ANALYZE analyze; |
| 643 | RRIP_TABLE *tab; |
| 644 | u_char c; |
| 645 | |
| 646 | analyze.outbuf = outbuf; |
| 647 | analyze.outlen = outlen; |
| 648 | analyze.maxlen = NAME_MAX255; |
| 649 | analyze.inump = inump; |
| 650 | analyze.imp = imp; |
| 651 | analyze.fields = ISO_SUSP_ALTNAME0x0008 | ISO_SUSP_RELDIR0x0040 | ISO_SUSP_CLINK0x0010 | |
| 652 | ISO_SUSP_PLINK0x0020; |
| 653 | *outlen = 0; |
| 654 | |
| 655 | isochar(isodir->name, isodir->name + isonum_711(isodir->name_len), |
| 656 | imp->joliet_level, &c); |
| 657 | tab = rrip_table_getname; |
| 658 | if (c == 0 || c == 1) { |
| 659 | cd9660_rrip_defname(isodir, &analyze); |
| 660 | |
| 661 | analyze.fields &= ~ISO_SUSP_ALTNAME0x0008; |
| 662 | tab++; |
| 663 | } |
| 664 | |
| 665 | return (cd9660_rrip_loop(isodir, &analyze, tab)); |
| 666 | } |
| 667 | |
| 668 | /* |
| 669 | * Get Symbolic Link. |
| 670 | */ |
| 671 | static RRIP_TABLE rrip_table_getsymname[] = { |
| 672 | { "SL", cd9660_rrip_slink, 0, ISO_SUSP_SLINK0x0004 }, |
| 673 | { "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG0x0100 }, |
| 674 | { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT0x0400 }, |
| 675 | { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP0x1000 }, |
| 676 | { "", 0, 0, 0 } |
| 677 | }; |
| 678 | |
| 679 | int |
| 680 | cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf, |
| 681 | u_short *outlen, struct iso_mnt *imp) |
| 682 | { |
| 683 | ISO_RRIP_ANALYZE analyze; |
| 684 | |
| 685 | analyze.outbuf = outbuf; |
| 686 | analyze.outlen = outlen; |
| 687 | *outlen = 0; |
| 688 | analyze.maxlen = MAXPATHLEN1024; |
| 689 | analyze.cont = 1; /* don't start with a slash */ |
| 690 | analyze.imp = imp; |
| 691 | analyze.fields = ISO_SUSP_SLINK0x0004; |
| 692 | |
| 693 | return (cd9660_rrip_loop(isodir, &analyze, rrip_table_getsymname) & |
| 694 | ISO_SUSP_SLINK0x0004); |
| 695 | } |
| 696 | |
| 697 | static RRIP_TABLE rrip_table_extref[] = { |
| 698 | { "ER", cd9660_rrip_extref, 0, ISO_SUSP_EXTREF0x0200 }, |
| 699 | { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT0x0400 }, |
| 700 | { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP0x1000 }, |
| 701 | { "", 0, 0, 0 } |
| 702 | }; |
| 703 | |
| 704 | /* |
| 705 | * Check for Rock Ridge Extension and return offset of its fields. |
| 706 | * Note: We insist on the ER field. |
| 707 | */ |
| 708 | int |
| 709 | cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp) |
| 710 | { |
| 711 | ISO_RRIP_OFFSET *p; |
| 712 | ISO_RRIP_ANALYZE analyze; |
| 713 | |
| 714 | imp->rr_skip0 = 0; |
| 715 | p = (ISO_RRIP_OFFSET *)(isodir->name + 1); |
| 716 | if (bcmp(p, "SP\7\1\276\357", 6)) { |
| 717 | /* Maybe, it's a CDROM XA disc? */ |
| 718 | imp->rr_skip0 = 15; |
| 719 | p = (ISO_RRIP_OFFSET *)((char *)p + 15); |
| 720 | if (bcmp(p, "SP\7\1\276\357", 6)) |
| 721 | return (-1); |
| 722 | } |
| 723 | |
| 724 | analyze.imp = imp; |
| 725 | analyze.fields = ISO_SUSP_EXTREF0x0200; |
| 726 | if (!(cd9660_rrip_loop(isodir, &analyze, rrip_table_extref) & |
| 727 | ISO_SUSP_EXTREF0x0200)) |
| 728 | return (-1); |
| 729 | |
| 730 | return (isonum_711(p->skip)); |
| 731 | } |