dirs.c revision 1.38
1 /* $NetBSD: dirs.c,v 1.38 2003/04/02 10:39:31 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #include <sys/cdefs.h> 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)dirs.c 8.7 (Berkeley) 5/1/95"; 45 #else 46 __RCSID("$NetBSD: dirs.c,v 1.38 2003/04/02 10:39:31 fvdl Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/file.h> 52 #include <sys/stat.h> 53 #include <sys/time.h> 54 55 #include <ufs/ufs/dinode.h> 56 #include <ufs/ufs/dir.h> 57 #include <ufs/ffs/fs.h> 58 #include <protocols/dumprestore.h> 59 60 #include <err.h> 61 #include <errno.h> 62 #include <paths.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <unistd.h> 67 68 #include <machine/endian.h> 69 70 #include "restore.h" 71 #include "extern.h" 72 73 /* 74 * Symbol table of directories read from tape. 75 */ 76 #define HASHSIZE 1000 77 #define INOHASH(val) (val % HASHSIZE) 78 struct inotab { 79 struct inotab *t_next; 80 ino_t t_ino; 81 int32_t t_seekpt; 82 int32_t t_size; 83 }; 84 static struct inotab *inotab[HASHSIZE]; 85 86 /* 87 * Information retained about directories. 88 */ 89 struct modeinfo { 90 ino_t ino; 91 struct timeval ctimep[2]; 92 struct timeval mtimep[2]; 93 mode_t mode; 94 uid_t uid; 95 gid_t gid; 96 int flags; 97 }; 98 99 /* 100 * Definitions for library routines operating on directories. 101 */ 102 #undef DIRBLKSIZ 103 #define DIRBLKSIZ 1024 104 struct rstdirdesc { 105 int dd_fd; 106 int32_t dd_loc; 107 int32_t dd_size; 108 char dd_buf[DIRBLKSIZ]; 109 }; 110 111 /* 112 * Global variables for this file. 113 */ 114 static long seekpt; 115 static FILE *df; 116 static RST_DIR *dirp; 117 static char dirfile[MAXPATHLEN] = "#"; /* No file */ 118 static char modefile[MAXPATHLEN] = "#"; /* No file */ 119 static char dot[2] = "."; /* So it can be modified */ 120 121 /* 122 * Format of old style directories. 123 */ 124 #define ODIRSIZ 14 125 struct odirect { 126 u_short d_ino; 127 char d_name[ODIRSIZ]; 128 }; 129 130 static struct inotab *allocinotab __P((FILE *, struct context *, long)); 131 static void dcvt __P((struct odirect *, struct direct *)); 132 static void flushent __P((void)); 133 static struct inotab *inotablookup __P((ino_t)); 134 static RST_DIR *opendirfile __P((const char *)); 135 static void putdir __P((char *, long)); 136 static void putent __P((struct direct *)); 137 static void rst_seekdir __P((RST_DIR *, long, long)); 138 static long rst_telldir __P((RST_DIR *)); 139 static struct direct *searchdir __P((ino_t, char *)); 140 141 /* 142 * Extract directory contents, building up a directory structure 143 * on disk for extraction by name. 144 * If genmode is requested, save mode, owner, and times for all 145 * directories on the tape. 146 */ 147 void 148 extractdirs(genmode) 149 int genmode; 150 { 151 FILE *mf; 152 int i, dfd, mfd; 153 struct inotab *itp; 154 struct direct nulldir; 155 156 mf = NULL; 157 vprintf(stdout, "Extract directories from tape\n"); 158 (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%d", 159 tmpdir, (int)dumpdate); 160 if (command != 'r' && command != 'R') { 161 (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%d-XXXXXX", 162 tmpdir, (int)dumpdate); 163 if ((dfd = mkstemp(dirfile)) == -1) 164 err(1, "cannot mkstemp temporary file %s", dirfile); 165 df = fdopen(dfd, "w"); 166 } 167 else 168 df = fopen(dirfile, "w"); 169 if (df == NULL) 170 err(1, "cannot open temporary file %s", dirfile); 171 172 if (genmode != 0) { 173 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%d", 174 tmpdir, (int)dumpdate); 175 if (command != 'r' && command != 'R') { 176 (void) snprintf(modefile, sizeof(modefile), 177 "%s/rstmode%d-XXXXXX", tmpdir, (int)dumpdate); 178 if ((mfd = mkstemp(modefile)) == -1) 179 err(1, "cannot mkstemp temporary file %s", 180 modefile); 181 mf = fdopen(mfd, "w"); 182 } 183 else 184 mf = fopen(modefile, "w"); 185 if (mf == NULL) 186 err(1, "cannot open temporary file %s", modefile); 187 } 188 nulldir.d_ino = 0; 189 nulldir.d_type = DT_DIR; 190 nulldir.d_namlen = 1; 191 (void) strcpy(nulldir.d_name, "/"); 192 nulldir.d_reclen = DIRSIZ(0, &nulldir, 0); 193 for (;;) { 194 curfile.name = "<directory file - name unknown>"; 195 curfile.action = USING; 196 if (curfile.mode == 0 || (curfile.mode & IFMT) != IFDIR) { 197 (void) fclose(df); 198 dirp = opendirfile(dirfile); 199 if (dirp == NULL) 200 fprintf(stderr, "opendirfile: %s\n", 201 strerror(errno)); 202 if (mf != NULL) 203 (void) fclose(mf); 204 i = dirlookup(dot); 205 if (i == 0) 206 panic("Root directory is not on tape\n"); 207 return; 208 } 209 itp = allocinotab(mf, &curfile, seekpt); 210 getfile(putdir, xtrnull); 211 putent(&nulldir); 212 flushent(); 213 itp->t_size = seekpt - itp->t_seekpt; 214 } 215 } 216 217 /* 218 * skip over all the directories on the tape 219 */ 220 void 221 skipdirs() 222 { 223 224 while (curfile.ino && (curfile.mode & IFMT) == IFDIR) { 225 skipfile(); 226 } 227 } 228 229 /* 230 * Recursively find names and inumbers of all files in subtree 231 * pname and pass them off to be processed. 232 */ 233 void 234 treescan(pname, ino, todo) 235 char *pname; 236 ino_t ino; 237 long (*todo) __P((char *, ino_t, int)); 238 { 239 struct inotab *itp; 240 struct direct *dp; 241 int namelen; 242 long bpt; 243 char locname[MAXPATHLEN + 1]; 244 245 itp = inotablookup(ino); 246 if (itp == NULL) { 247 /* 248 * Pname is name of a simple file or an unchanged directory. 249 */ 250 (void) (*todo)(pname, ino, LEAF); 251 return; 252 } 253 /* 254 * Pname is a dumped directory name. 255 */ 256 if ((*todo)(pname, ino, NODE) == FAIL) 257 return; 258 /* 259 * begin search through the directory 260 * skipping over "." and ".." 261 */ 262 (void) snprintf(locname, sizeof(locname), "%s/", pname); 263 namelen = strlen(locname); 264 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 265 dp = rst_readdir(dirp); /* "." */ 266 if (dp != NULL && strcmp(dp->d_name, ".") == 0) 267 dp = rst_readdir(dirp); /* ".." */ 268 else 269 fprintf(stderr, "Warning: `.' missing from directory %s\n", 270 pname); 271 if (dp != NULL && strcmp(dp->d_name, "..") == 0) 272 dp = rst_readdir(dirp); /* first real entry */ 273 else 274 fprintf(stderr, "Warning: `..' missing from directory %s\n", 275 pname); 276 bpt = rst_telldir(dirp); 277 /* 278 * a zero inode signals end of directory 279 */ 280 while (dp != NULL) { 281 locname[namelen] = '\0'; 282 if (namelen + dp->d_namlen >= sizeof(locname)) { 283 fprintf(stderr, "%s%s: name exceeds %lu char\n", 284 locname, dp->d_name, (u_long)(sizeof(locname) - 1)); 285 } else { 286 (void) strncat(locname, dp->d_name, (int)dp->d_namlen); 287 locname[namelen + dp->d_namlen] = '\0'; 288 treescan(locname, dp->d_ino, todo); 289 rst_seekdir(dirp, bpt, itp->t_seekpt); 290 } 291 dp = rst_readdir(dirp); 292 bpt = rst_telldir(dirp); 293 } 294 } 295 296 /* 297 * Lookup a pathname which is always assumed to start from the ROOTINO. 298 */ 299 struct direct * 300 pathsearch(pathname) 301 const char *pathname; 302 { 303 ino_t ino; 304 struct direct *dp; 305 char *path, *name, buffer[MAXPATHLEN]; 306 307 strcpy(buffer, pathname); 308 path = buffer; 309 ino = ROOTINO; 310 while (*path == '/') 311 path++; 312 dp = NULL; 313 while ((name = strsep(&path, "/")) != NULL && *name != '\0') { 314 if ((dp = searchdir(ino, name)) == NULL) 315 return (NULL); 316 ino = dp->d_ino; 317 } 318 return (dp); 319 } 320 321 /* 322 * Lookup the requested name in directory inum. 323 * Return its inode number if found, zero if it does not exist. 324 */ 325 static struct direct * 326 searchdir(inum, name) 327 ino_t inum; 328 char *name; 329 { 330 struct direct *dp; 331 struct inotab *itp; 332 int len; 333 334 itp = inotablookup(inum); 335 if (itp == NULL) 336 return (NULL); 337 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 338 len = strlen(name); 339 do { 340 dp = rst_readdir(dirp); 341 if (dp == NULL) 342 return (NULL); 343 } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0); 344 return (dp); 345 } 346 347 /* 348 * Put the directory entries in the directory file 349 */ 350 static void 351 putdir(buf, size) 352 char *buf; 353 long size; 354 { 355 struct direct cvtbuf; 356 struct odirect *odp; 357 struct odirect *eodp; 358 struct direct *dp; 359 long loc, i; 360 361 if (cvtflag) { 362 eodp = (struct odirect *)&buf[size]; 363 for (odp = (struct odirect *)buf; odp < eodp; odp++) 364 if (odp->d_ino != 0) { 365 dcvt(odp, &cvtbuf); 366 putent(&cvtbuf); 367 } 368 } else { 369 for (loc = 0; loc < size; ) { 370 dp = (struct direct *)(buf + loc); 371 if (Bcvt) { 372 dp->d_ino = bswap32(dp->d_ino); 373 dp->d_reclen = bswap16(dp->d_ino); 374 } 375 if (oldinofmt && dp->d_ino != 0) { 376 # if BYTE_ORDER == BIG_ENDIAN 377 if (Bcvt) 378 dp->d_namlen = dp->d_type; 379 # else 380 if (!Bcvt) 381 dp->d_namlen = dp->d_type; 382 # endif 383 dp->d_type = DT_UNKNOWN; 384 } 385 i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1)); 386 if ((dp->d_reclen & 0x3) != 0 || 387 dp->d_reclen > i || 388 dp->d_reclen < DIRSIZ(0, dp, 0) /* || 389 dp->d_namlen > NAME_MAX */) { 390 vprintf(stdout, "Mangled directory: "); 391 if ((dp->d_reclen & 0x3) != 0) 392 vprintf(stdout, 393 "reclen not multiple of 4 "); 394 if (dp->d_reclen < DIRSIZ(0, dp, 0)) 395 vprintf(stdout, 396 "reclen less than DIRSIZ (%d < %lu) ", 397 dp->d_reclen, (u_long)DIRSIZ(0, dp, 0)); 398 #if 0 /* dp->d_namlen is a uint8_t, always < NAME_MAX */ 399 if (dp->d_namlen > NAME_MAX) 400 vprintf(stdout, 401 "reclen name too big (%d > %d) ", 402 dp->d_namlen, NAME_MAX); 403 #endif 404 vprintf(stdout, "\n"); 405 loc += i; 406 continue; 407 } 408 loc += dp->d_reclen; 409 if (dp->d_ino != 0) { 410 putent(dp); 411 } 412 } 413 } 414 } 415 416 /* 417 * These variables are "local" to the following two functions. 418 */ 419 char dirbuf[DIRBLKSIZ]; 420 long dirloc = 0; 421 long prev = 0; 422 423 /* 424 * add a new directory entry to a file. 425 */ 426 static void 427 putent(dp) 428 struct direct *dp; 429 { 430 dp->d_reclen = DIRSIZ(0, dp, 0); 431 if (dirloc + dp->d_reclen > DIRBLKSIZ) { 432 ((struct direct *)(dirbuf + prev))->d_reclen = 433 DIRBLKSIZ - prev; 434 (void) fwrite(dirbuf, 1, DIRBLKSIZ, df); 435 dirloc = 0; 436 } 437 memmove(dirbuf + dirloc, dp, (long)dp->d_reclen); 438 prev = dirloc; 439 dirloc += dp->d_reclen; 440 } 441 442 /* 443 * flush out a directory that is finished. 444 */ 445 static void 446 flushent() 447 { 448 ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev; 449 (void) fwrite(dirbuf, (int)dirloc, 1, df); 450 seekpt = ftell(df); 451 dirloc = 0; 452 } 453 454 static void 455 dcvt(odp, ndp) 456 struct odirect *odp; 457 struct direct *ndp; 458 { 459 460 memset(ndp, 0, (size_t)(sizeof *ndp)); 461 if (Bcvt) 462 ndp->d_ino = bswap16(odp->d_ino); 463 else 464 ndp->d_ino = odp->d_ino; 465 ndp->d_type = DT_UNKNOWN; 466 (void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ); 467 ndp->d_namlen = strlen(ndp->d_name); 468 ndp->d_reclen = DIRSIZ(0, ndp, 0); 469 } 470 471 /* 472 * Seek to an entry in a directory. 473 * Only values returned by rst_telldir should be passed to rst_seekdir. 474 * This routine handles many directories in a single file. 475 * It takes the base of the directory in the file, plus 476 * the desired seek offset into it. 477 */ 478 static void 479 rst_seekdir(rdirp, loc, base) 480 RST_DIR *rdirp; 481 long loc, base; 482 { 483 484 if (loc == rst_telldir(rdirp)) 485 return; 486 loc -= base; 487 if (loc < 0) 488 fprintf(stderr, "bad seek pointer to rst_seekdir %d\n", 489 (int)loc); 490 (void) lseek(rdirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET); 491 rdirp->dd_loc = loc & (DIRBLKSIZ - 1); 492 if (rdirp->dd_loc != 0) 493 rdirp->dd_size = read(rdirp->dd_fd, rdirp->dd_buf, DIRBLKSIZ); 494 } 495 496 /* 497 * get next entry in a directory. 498 */ 499 struct direct * 500 rst_readdir(rdirp) 501 RST_DIR *rdirp; 502 { 503 struct direct *dp; 504 505 for (;;) { 506 if (rdirp->dd_loc == 0) { 507 rdirp->dd_size = read(rdirp->dd_fd, rdirp->dd_buf, 508 DIRBLKSIZ); 509 if (rdirp->dd_size <= 0) { 510 dprintf(stderr, "error reading directory\n"); 511 return (NULL); 512 } 513 } 514 if (rdirp->dd_loc >= rdirp->dd_size) { 515 rdirp->dd_loc = 0; 516 continue; 517 } 518 dp = (struct direct *)(rdirp->dd_buf + rdirp->dd_loc); 519 if (dp->d_reclen == 0 || 520 dp->d_reclen > DIRBLKSIZ + 1 - rdirp->dd_loc) { 521 dprintf(stderr, "corrupted directory: bad reclen %d\n", 522 dp->d_reclen); 523 return (NULL); 524 } 525 rdirp->dd_loc += dp->d_reclen; 526 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0) 527 return (NULL); 528 if (dp->d_ino >= maxino) { 529 dprintf(stderr, "corrupted directory: bad inum %d\n", 530 dp->d_ino); 531 continue; 532 } 533 return (dp); 534 } 535 } 536 537 /* 538 * Simulate the opening of a directory 539 */ 540 RST_DIR * 541 rst_opendir(name) 542 const char *name; 543 { 544 struct inotab *itp; 545 RST_DIR *rdirp; 546 ino_t ino; 547 548 if ((ino = dirlookup(name)) > 0 && 549 (itp = inotablookup(ino)) != NULL) { 550 rdirp = opendirfile(dirfile); 551 rst_seekdir(rdirp, itp->t_seekpt, itp->t_seekpt); 552 return (rdirp); 553 } 554 return (NULL); 555 } 556 557 /* 558 * In our case, there is nothing to do when closing a directory. 559 */ 560 void 561 rst_closedir(rdirp) 562 RST_DIR *rdirp; 563 { 564 565 (void)close(rdirp->dd_fd); 566 free(rdirp); 567 return; 568 } 569 570 /* 571 * Simulate finding the current offset in the directory. 572 */ 573 static long 574 rst_telldir(rdirp) 575 RST_DIR *rdirp; 576 { 577 return ((long)lseek(rdirp->dd_fd, 578 (off_t)0, SEEK_CUR) - rdirp->dd_size + rdirp->dd_loc); 579 } 580 581 /* 582 * Open a directory file. 583 */ 584 static RST_DIR * 585 opendirfile(name) 586 const char *name; 587 { 588 RST_DIR *rdirp; 589 int fd; 590 591 if ((fd = open(name, O_RDONLY)) == -1) 592 return (NULL); 593 if ((rdirp = malloc(sizeof(RST_DIR))) == NULL) { 594 (void)close(fd); 595 return (NULL); 596 } 597 rdirp->dd_fd = fd; 598 rdirp->dd_loc = 0; 599 return (rdirp); 600 } 601 602 /* 603 * Set the mode, owner, and times for all new or changed directories 604 */ 605 void 606 setdirmodes(flags) 607 int flags; 608 { 609 FILE *mf; 610 struct modeinfo node; 611 struct entry *ep; 612 char *cp; 613 614 vprintf(stdout, "Set directory mode, owner, and times.\n"); 615 if (command == 'r' || command == 'R') 616 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%d", 617 tmpdir, (int)dumpdate); 618 if (modefile[0] == '#') { 619 panic("modefile not defined\n"); 620 fprintf(stderr, "directory mode, owner, and times not set\n"); 621 return; 622 } 623 mf = fopen(modefile, "r"); 624 if (mf == NULL) { 625 fprintf(stderr, "fopen: %s\n", strerror(errno)); 626 fprintf(stderr, "cannot open mode file %s\n", modefile); 627 fprintf(stderr, "directory mode, owner, and times not set\n"); 628 return; 629 } 630 clearerr(mf); 631 for (;;) { 632 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf); 633 if (feof(mf)) 634 break; 635 ep = lookupino(node.ino); 636 if (command == 'i' || command == 'x') { 637 if (ep == NULL) 638 continue; 639 if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) { 640 ep->e_flags &= ~NEW; 641 continue; 642 } 643 if (node.ino == ROOTINO && 644 reply("set owner/mode for '.'") == FAIL) 645 continue; 646 } 647 if (ep == NULL) { 648 panic("cannot find directory inode %d\n", node.ino); 649 } else { 650 if (!Nflag) { 651 cp = myname(ep); 652 (void) utimes(cp, node.ctimep); 653 (void) utimes(cp, node.mtimep); 654 (void) chown(cp, node.uid, node.gid); 655 (void) chmod(cp, node.mode); 656 (void) chflags(cp, node.flags); 657 } 658 ep->e_flags &= ~NEW; 659 } 660 } 661 if (ferror(mf)) 662 panic("error setting directory modes\n"); 663 (void) fclose(mf); 664 } 665 666 /* 667 * Generate a literal copy of a directory. 668 */ 669 int 670 genliteraldir(name, ino) 671 char *name; 672 ino_t ino; 673 { 674 struct inotab *itp; 675 int ofile, dp, i, size; 676 char buf[BUFSIZ]; 677 678 itp = inotablookup(ino); 679 if (itp == NULL) 680 panic("Cannot find directory inode %d named %s\n", ino, name); 681 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) { 682 fprintf(stderr, "%s: ", name); 683 (void) fflush(stderr); 684 fprintf(stderr, "cannot create file: %s\n", strerror(errno)); 685 return (FAIL); 686 } 687 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 688 dp = dup(dirp->dd_fd); 689 for (i = itp->t_size; i > 0; i -= BUFSIZ) { 690 size = i < BUFSIZ ? i : BUFSIZ; 691 if (read(dp, buf, (int) size) == -1) { 692 fprintf(stderr, 693 "write error extracting inode %d, name %s\n", 694 curfile.ino, curfile.name); 695 fprintf(stderr, "read: %s\n", strerror(errno)); 696 exit(1); 697 } 698 if (!Nflag && write(ofile, buf, (int) size) == -1) { 699 fprintf(stderr, 700 "write error extracting inode %d, name %s\n", 701 curfile.ino, curfile.name); 702 fprintf(stderr, "write: %s\n", strerror(errno)); 703 exit(1); 704 } 705 } 706 (void) close(dp); 707 (void) close(ofile); 708 return (GOOD); 709 } 710 711 /* 712 * Determine the type of an inode 713 */ 714 int 715 inodetype(ino) 716 ino_t ino; 717 { 718 struct inotab *itp; 719 720 itp = inotablookup(ino); 721 if (itp == NULL) 722 return (LEAF); 723 return (NODE); 724 } 725 726 /* 727 * Allocate and initialize a directory inode entry. 728 * If requested, save its pertinent mode, owner, and time info. 729 */ 730 static struct inotab * 731 allocinotab(mf, ctxp, aseekpt) 732 FILE *mf; 733 struct context *ctxp; 734 long aseekpt; 735 { 736 struct inotab *itp; 737 struct modeinfo node; 738 739 itp = calloc(1, sizeof(struct inotab)); 740 if (itp == NULL) 741 panic("no memory directory table\n"); 742 itp->t_next = inotab[INOHASH(ctxp->ino)]; 743 inotab[INOHASH(ctxp->ino)] = itp; 744 itp->t_ino = ctxp->ino; 745 itp->t_seekpt = aseekpt; 746 if (mf == NULL) 747 return (itp); 748 node.ino = ctxp->ino; 749 node.mtimep[0].tv_sec = ctxp->atime_sec; 750 node.mtimep[0].tv_usec = ctxp->atime_nsec / 1000; 751 node.mtimep[1].tv_sec = ctxp->mtime_sec; 752 node.mtimep[1].tv_usec = ctxp->mtime_nsec / 1000; 753 node.ctimep[0].tv_sec = ctxp->atime_sec; 754 node.ctimep[0].tv_usec = ctxp->atime_nsec / 1000; 755 node.ctimep[1].tv_sec = ctxp->birthtime_sec; 756 node.ctimep[1].tv_usec = ctxp->birthtime_nsec / 1000; 757 node.mode = ctxp->mode; 758 node.flags = ctxp->file_flags; 759 node.uid = ctxp->uid; 760 node.gid = ctxp->gid; 761 (void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf); 762 return (itp); 763 } 764 765 /* 766 * Look up an inode in the table of directories 767 */ 768 static struct inotab * 769 inotablookup(ino) 770 ino_t ino; 771 { 772 struct inotab *itp; 773 774 for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next) 775 if (itp->t_ino == ino) 776 return (itp); 777 return (NULL); 778 } 779 780 /* 781 * Clean up and exit 782 */ 783 void 784 cleanup() 785 { 786 787 closemt(); 788 if (modefile[0] != '#') 789 (void) unlink(modefile); 790 if (dirfile[0] != '#') 791 (void) unlink(dirfile); 792 } 793
Indexes created Mon Sep 29 03:10:08 GMT 2025