dirs.c revision 1.35
1 /* $NetBSD: dirs.c,v 1.35 2001/11/01 08:21:57 lukem 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 1.35 2001/11/01 08:21:57 lukem 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 timep[2]; 92 mode_t mode; 93 uid_t uid; 94 gid_t gid; 95 int flags; 96 }; 97 98 /* 99 * Definitions for library routines operating on directories. 100 */ 101 #undef DIRBLKSIZ 102 #define DIRBLKSIZ 1024 103 struct rstdirdesc { 104 int dd_fd; 105 int32_t dd_loc; 106 int32_t dd_size; 107 char dd_buf[DIRBLKSIZ]; 108 }; 109 110 /* 111 * Global variables for this file. 112 */ 113 static long seekpt; 114 static FILE *df; 115 static RST_DIR *dirp; 116 static char dirfile[MAXPATHLEN] = "#"; /* No file */ 117 static char modefile[MAXPATHLEN] = "#"; /* No file */ 118 static char dot[2] = "."; /* So it can be modified */ 119 120 /* 121 * Format of old style directories. 122 */ 123 #define ODIRSIZ 14 124 struct odirect { 125 u_short d_ino; 126 char d_name[ODIRSIZ]; 127 }; 128 129 static struct inotab *allocinotab __P((FILE *, ino_t, struct dinode *, long)); 130 static void dcvt __P((struct odirect *, struct direct *)); 131 static void flushent __P((void)); 132 static struct inotab *inotablookup __P((ino_t)); 133 static RST_DIR *opendirfile __P((const char *)); 134 static void putdir __P((char *, long)); 135 static void putent __P((struct direct *)); 136 static void rst_seekdir __P((RST_DIR *, long, long)); 137 static long rst_telldir __P((RST_DIR *)); 138 static struct direct *searchdir __P((ino_t, char *)); 139 140 /* 141 * Extract directory contents, building up a directory structure 142 * on disk for extraction by name. 143 * If genmode is requested, save mode, owner, and times for all 144 * directories on the tape. 145 */ 146 void 147 extractdirs(genmode) 148 int genmode; 149 { 150 FILE *mf; 151 int i, dfd, mfd; 152 struct dinode *ip; 153 struct inotab *itp; 154 struct direct nulldir; 155 156 vprintf(stdout, "Extract directories from tape\n"); 157 (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%d", 158 tmpdir, (int)dumpdate); 159 if (command != 'r' && command != 'R') { 160 (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%d-XXXXXX", 161 tmpdir, (int)dumpdate); 162 if ((dfd = mkstemp(dirfile)) == -1) 163 err(1, "cannot mkstemp temporary file %s", dirfile); 164 df = fdopen(dfd, "w"); 165 } 166 else 167 df = fopen(dirfile, "w"); 168 if (df == NULL) 169 err(1, "cannot open temporary file %s", dirfile); 170 171 if (genmode != 0) { 172 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%d", 173 tmpdir, (int)dumpdate); 174 if (command != 'r' && command != 'R') { 175 (void) snprintf(modefile, sizeof(modefile), 176 "%s/rstmode%d-XXXXXX", tmpdir, (int)dumpdate); 177 if ((mfd = mkstemp(modefile)) == -1) 178 err(1, "cannot mkstemp temporary file %s", 179 modefile); 180 mf = fdopen(mfd, "w"); 181 } 182 else 183 mf = fopen(modefile, "w"); 184 if (mf == NULL) 185 err(1, "cannot open temporary file %s", modefile); 186 } 187 nulldir.d_ino = 0; 188 nulldir.d_type = DT_DIR; 189 nulldir.d_namlen = 1; 190 (void) strcpy(nulldir.d_name, "/"); 191 nulldir.d_reclen = DIRSIZ(0, &nulldir, 0); 192 for (;;) { 193 curfile.name = "<directory file - name unknown>"; 194 curfile.action = USING; 195 ip = curfile.dip; 196 if (ip == NULL || (ip->di_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.ino, ip, 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.dip && (curfile.dip->di_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 swabst((u_char *)"ls", (u_char *) dp); 373 if (oldinofmt && dp->d_ino != 0) { 374 # if BYTE_ORDER == BIG_ENDIAN 375 if (Bcvt) 376 dp->d_namlen = dp->d_type; 377 # else 378 if (!Bcvt) 379 dp->d_namlen = dp->d_type; 380 # endif 381 dp->d_type = DT_UNKNOWN; 382 } 383 i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1)); 384 if ((dp->d_reclen & 0x3) != 0 || 385 dp->d_reclen > i || 386 dp->d_reclen < DIRSIZ(0, dp, 0) || 387 dp->d_namlen > NAME_MAX) { 388 vprintf(stdout, "Mangled directory: "); 389 if ((dp->d_reclen & 0x3) != 0) 390 vprintf(stdout, 391 "reclen not multiple of 4 "); 392 if (dp->d_reclen < DIRSIZ(0, dp, 0)) 393 vprintf(stdout, 394 "reclen less than DIRSIZ (%d < %lu) ", 395 dp->d_reclen, (u_long)DIRSIZ(0, dp, 0)); 396 if (dp->d_namlen > NAME_MAX) 397 vprintf(stdout, 398 "reclen name too big (%d > %d) ", 399 dp->d_namlen, NAME_MAX); 400 vprintf(stdout, "\n"); 401 loc += i; 402 continue; 403 } 404 loc += dp->d_reclen; 405 if (dp->d_ino != 0) { 406 putent(dp); 407 } 408 } 409 } 410 } 411 412 /* 413 * These variables are "local" to the following two functions. 414 */ 415 char dirbuf[DIRBLKSIZ]; 416 long dirloc = 0; 417 long prev = 0; 418 419 /* 420 * add a new directory entry to a file. 421 */ 422 static void 423 putent(dp) 424 struct direct *dp; 425 { 426 dp->d_reclen = DIRSIZ(0, dp, 0); 427 if (dirloc + dp->d_reclen > DIRBLKSIZ) { 428 ((struct direct *)(dirbuf + prev))->d_reclen = 429 DIRBLKSIZ - prev; 430 (void) fwrite(dirbuf, 1, DIRBLKSIZ, df); 431 dirloc = 0; 432 } 433 memmove(dirbuf + dirloc, dp, (long)dp->d_reclen); 434 prev = dirloc; 435 dirloc += dp->d_reclen; 436 } 437 438 /* 439 * flush out a directory that is finished. 440 */ 441 static void 442 flushent() 443 { 444 ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev; 445 (void) fwrite(dirbuf, (int)dirloc, 1, df); 446 seekpt = ftell(df); 447 dirloc = 0; 448 } 449 450 static void 451 dcvt(odp, ndp) 452 struct odirect *odp; 453 struct direct *ndp; 454 { 455 456 memset(ndp, 0, (size_t)(sizeof *ndp)); 457 ndp->d_ino = odp->d_ino; 458 ndp->d_type = DT_UNKNOWN; 459 (void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ); 460 ndp->d_namlen = strlen(ndp->d_name); 461 ndp->d_reclen = DIRSIZ(0, ndp, 0); 462 } 463 464 /* 465 * Seek to an entry in a directory. 466 * Only values returned by rst_telldir should be passed to rst_seekdir. 467 * This routine handles many directories in a single file. 468 * It takes the base of the directory in the file, plus 469 * the desired seek offset into it. 470 */ 471 static void 472 rst_seekdir(rdirp, loc, base) 473 RST_DIR *rdirp; 474 long loc, base; 475 { 476 477 if (loc == rst_telldir(rdirp)) 478 return; 479 loc -= base; 480 if (loc < 0) 481 fprintf(stderr, "bad seek pointer to rst_seekdir %d\n", 482 (int)loc); 483 (void) lseek(rdirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET); 484 rdirp->dd_loc = loc & (DIRBLKSIZ - 1); 485 if (rdirp->dd_loc != 0) 486 rdirp->dd_size = read(rdirp->dd_fd, rdirp->dd_buf, DIRBLKSIZ); 487 } 488 489 /* 490 * get next entry in a directory. 491 */ 492 struct direct * 493 rst_readdir(rdirp) 494 RST_DIR *rdirp; 495 { 496 struct direct *dp; 497 498 for (;;) { 499 if (rdirp->dd_loc == 0) { 500 rdirp->dd_size = read(rdirp->dd_fd, rdirp->dd_buf, 501 DIRBLKSIZ); 502 if (rdirp->dd_size <= 0) { 503 dprintf(stderr, "error reading directory\n"); 504 return (NULL); 505 } 506 } 507 if (rdirp->dd_loc >= rdirp->dd_size) { 508 rdirp->dd_loc = 0; 509 continue; 510 } 511 dp = (struct direct *)(rdirp->dd_buf + rdirp->dd_loc); 512 if (dp->d_reclen == 0 || 513 dp->d_reclen > DIRBLKSIZ + 1 - rdirp->dd_loc) { 514 dprintf(stderr, "corrupted directory: bad reclen %d\n", 515 dp->d_reclen); 516 return (NULL); 517 } 518 rdirp->dd_loc += dp->d_reclen; 519 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0) 520 return (NULL); 521 if (dp->d_ino >= maxino) { 522 dprintf(stderr, "corrupted directory: bad inum %d\n", 523 dp->d_ino); 524 continue; 525 } 526 return (dp); 527 } 528 } 529 530 /* 531 * Simulate the opening of a directory 532 */ 533 RST_DIR * 534 rst_opendir(name) 535 const char *name; 536 { 537 struct inotab *itp; 538 RST_DIR *rdirp; 539 ino_t ino; 540 541 if ((ino = dirlookup(name)) > 0 && 542 (itp = inotablookup(ino)) != NULL) { 543 rdirp = opendirfile(dirfile); 544 rst_seekdir(rdirp, itp->t_seekpt, itp->t_seekpt); 545 return (rdirp); 546 } 547 return (NULL); 548 } 549 550 /* 551 * In our case, there is nothing to do when closing a directory. 552 */ 553 void 554 rst_closedir(rdirp) 555 RST_DIR *rdirp; 556 { 557 558 (void)close(rdirp->dd_fd); 559 free(rdirp); 560 return; 561 } 562 563 /* 564 * Simulate finding the current offset in the directory. 565 */ 566 static long 567 rst_telldir(rdirp) 568 RST_DIR *rdirp; 569 { 570 return ((long)lseek(rdirp->dd_fd, 571 (off_t)0, SEEK_CUR) - rdirp->dd_size + rdirp->dd_loc); 572 } 573 574 /* 575 * Open a directory file. 576 */ 577 static RST_DIR * 578 opendirfile(name) 579 const char *name; 580 { 581 RST_DIR *rdirp; 582 int fd; 583 584 if ((fd = open(name, O_RDONLY)) == -1) 585 return (NULL); 586 if ((rdirp = malloc(sizeof(RST_DIR))) == NULL) { 587 (void)close(fd); 588 return (NULL); 589 } 590 rdirp->dd_fd = fd; 591 rdirp->dd_loc = 0; 592 return (rdirp); 593 } 594 595 /* 596 * Set the mode, owner, and times for all new or changed directories 597 */ 598 void 599 setdirmodes(flags) 600 int flags; 601 { 602 FILE *mf; 603 struct modeinfo node; 604 struct entry *ep; 605 char *cp; 606 607 vprintf(stdout, "Set directory mode, owner, and times.\n"); 608 if (command == 'r' || command == 'R') 609 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%d", 610 tmpdir, (int)dumpdate); 611 if (modefile[0] == '#') { 612 panic("modefile not defined\n"); 613 fprintf(stderr, "directory mode, owner, and times not set\n"); 614 return; 615 } 616 mf = fopen(modefile, "r"); 617 if (mf == NULL) { 618 fprintf(stderr, "fopen: %s\n", strerror(errno)); 619 fprintf(stderr, "cannot open mode file %s\n", modefile); 620 fprintf(stderr, "directory mode, owner, and times not set\n"); 621 return; 622 } 623 clearerr(mf); 624 for (;;) { 625 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf); 626 if (feof(mf)) 627 break; 628 ep = lookupino(node.ino); 629 if (command == 'i' || command == 'x') { 630 if (ep == NULL) 631 continue; 632 if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) { 633 ep->e_flags &= ~NEW; 634 continue; 635 } 636 if (node.ino == ROOTINO && 637 reply("set owner/mode for '.'") == FAIL) 638 continue; 639 } 640 if (ep == NULL) { 641 panic("cannot find directory inode %d\n", node.ino); 642 } else { 643 if (!Nflag) { 644 cp = myname(ep); 645 (void) utimes(cp, node.timep); 646 (void) chown(cp, node.uid, node.gid); 647 (void) chmod(cp, node.mode); 648 (void) chflags(cp, node.flags); 649 } 650 ep->e_flags &= ~NEW; 651 } 652 } 653 if (ferror(mf)) 654 panic("error setting directory modes\n"); 655 (void) fclose(mf); 656 } 657 658 /* 659 * Generate a literal copy of a directory. 660 */ 661 int 662 genliteraldir(name, ino) 663 char *name; 664 ino_t ino; 665 { 666 struct inotab *itp; 667 int ofile, dp, i, size; 668 char buf[BUFSIZ]; 669 670 itp = inotablookup(ino); 671 if (itp == NULL) 672 panic("Cannot find directory inode %d named %s\n", ino, name); 673 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) { 674 fprintf(stderr, "%s: ", name); 675 (void) fflush(stderr); 676 fprintf(stderr, "cannot create file: %s\n", strerror(errno)); 677 return (FAIL); 678 } 679 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 680 dp = dup(dirp->dd_fd); 681 for (i = itp->t_size; i > 0; i -= BUFSIZ) { 682 size = i < BUFSIZ ? i : BUFSIZ; 683 if (read(dp, buf, (int) size) == -1) { 684 fprintf(stderr, 685 "write error extracting inode %d, name %s\n", 686 curfile.ino, curfile.name); 687 fprintf(stderr, "read: %s\n", strerror(errno)); 688 exit(1); 689 } 690 if (!Nflag && write(ofile, buf, (int) size) == -1) { 691 fprintf(stderr, 692 "write error extracting inode %d, name %s\n", 693 curfile.ino, curfile.name); 694 fprintf(stderr, "write: %s\n", strerror(errno)); 695 exit(1); 696 } 697 } 698 (void) close(dp); 699 (void) close(ofile); 700 return (GOOD); 701 } 702 703 /* 704 * Determine the type of an inode 705 */ 706 int 707 inodetype(ino) 708 ino_t ino; 709 { 710 struct inotab *itp; 711 712 itp = inotablookup(ino); 713 if (itp == NULL) 714 return (LEAF); 715 return (NODE); 716 } 717 718 /* 719 * Allocate and initialize a directory inode entry. 720 * If requested, save its pertinent mode, owner, and time info. 721 */ 722 static struct inotab * 723 allocinotab(mf, ino, dip, aseekpt) 724 FILE *mf; 725 ino_t ino; 726 struct dinode *dip; 727 long aseekpt; 728 { 729 struct inotab *itp; 730 struct modeinfo node; 731 732 itp = calloc(1, sizeof(struct inotab)); 733 if (itp == NULL) 734 panic("no memory directory table\n"); 735 itp->t_next = inotab[INOHASH(ino)]; 736 inotab[INOHASH(ino)] = itp; 737 itp->t_ino = ino; 738 itp->t_seekpt = aseekpt; 739 if (mf == NULL) 740 return (itp); 741 node.ino = ino; 742 node.timep[0].tv_sec = dip->di_atime; 743 node.timep[0].tv_usec = dip->di_atimensec / 1000; 744 node.timep[1].tv_sec = dip->di_mtime; 745 node.timep[1].tv_usec = dip->di_mtimensec / 1000; 746 node.mode = dip->di_mode; 747 node.flags = dip->di_flags; 748 node.uid = dip->di_uid; 749 node.gid = dip->di_gid; 750 (void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf); 751 return (itp); 752 } 753 754 /* 755 * Look up an inode in the table of directories 756 */ 757 static struct inotab * 758 inotablookup(ino) 759 ino_t ino; 760 { 761 struct inotab *itp; 762 763 for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next) 764 if (itp->t_ino == ino) 765 return (itp); 766 return (NULL); 767 } 768 769 /* 770 * Clean up and exit 771 */ 772 void 773 cleanup() 774 { 775 776 closemt(); 777 if (modefile[0] != '#') 778 (void) unlink(modefile); 779 if (dirfile[0] != '#') 780 (void) unlink(dirfile); 781 } 782
Indexes created Thu Sep 25 16:09:42 GMT 2025