dirs.c revision 1.37
1 /* $NetBSD: dirs.c,v 1.37 2002/05/09 02:55:50 simonb 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 1.37 2002/05/09 02:55:50 simonb 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 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 ip = curfile.dip; 197 if (ip == NULL || (ip->di_mode & IFMT) != IFDIR) { 198 (void) fclose(df); 199 dirp = opendirfile(dirfile); 200 if (dirp == NULL) 201 fprintf(stderr, "opendirfile: %s\n", 202 strerror(errno)); 203 if (mf != NULL) 204 (void) fclose(mf); 205 i = dirlookup(dot); 206 if (i == 0) 207 panic("Root directory is not on tape\n"); 208 return; 209 } 210 itp = allocinotab(mf, curfile.ino, ip, seekpt); 211 getfile(putdir, xtrnull); 212 putent(&nulldir); 213 flushent(); 214 itp->t_size = seekpt - itp->t_seekpt; 215 } 216 } 217 218 /* 219 * skip over all the directories on the tape 220 */ 221 void 222 skipdirs() 223 { 224 225 while (curfile.dip && (curfile.dip->di_mode & IFMT) == IFDIR) { 226 skipfile(); 227 } 228 } 229 230 /* 231 * Recursively find names and inumbers of all files in subtree 232 * pname and pass them off to be processed. 233 */ 234 void 235 treescan(pname, ino, todo) 236 char *pname; 237 ino_t ino; 238 long (*todo) __P((char *, ino_t, int)); 239 { 240 struct inotab *itp; 241 struct direct *dp; 242 int namelen; 243 long bpt; 244 char locname[MAXPATHLEN + 1]; 245 246 itp = inotablookup(ino); 247 if (itp == NULL) { 248 /* 249 * Pname is name of a simple file or an unchanged directory. 250 */ 251 (void) (*todo)(pname, ino, LEAF); 252 return; 253 } 254 /* 255 * Pname is a dumped directory name. 256 */ 257 if ((*todo)(pname, ino, NODE) == FAIL) 258 return; 259 /* 260 * begin search through the directory 261 * skipping over "." and ".." 262 */ 263 (void) snprintf(locname, sizeof(locname), "%s/", pname); 264 namelen = strlen(locname); 265 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 266 dp = rst_readdir(dirp); /* "." */ 267 if (dp != NULL && strcmp(dp->d_name, ".") == 0) 268 dp = rst_readdir(dirp); /* ".." */ 269 else 270 fprintf(stderr, "Warning: `.' missing from directory %s\n", 271 pname); 272 if (dp != NULL && strcmp(dp->d_name, "..") == 0) 273 dp = rst_readdir(dirp); /* first real entry */ 274 else 275 fprintf(stderr, "Warning: `..' missing from directory %s\n", 276 pname); 277 bpt = rst_telldir(dirp); 278 /* 279 * a zero inode signals end of directory 280 */ 281 while (dp != NULL) { 282 locname[namelen] = '\0'; 283 if (namelen + dp->d_namlen >= sizeof(locname)) { 284 fprintf(stderr, "%s%s: name exceeds %lu char\n", 285 locname, dp->d_name, (u_long)(sizeof(locname) - 1)); 286 } else { 287 (void) strncat(locname, dp->d_name, (int)dp->d_namlen); 288 locname[namelen + dp->d_namlen] = '\0'; 289 treescan(locname, dp->d_ino, todo); 290 rst_seekdir(dirp, bpt, itp->t_seekpt); 291 } 292 dp = rst_readdir(dirp); 293 bpt = rst_telldir(dirp); 294 } 295 } 296 297 /* 298 * Lookup a pathname which is always assumed to start from the ROOTINO. 299 */ 300 struct direct * 301 pathsearch(pathname) 302 const char *pathname; 303 { 304 ino_t ino; 305 struct direct *dp; 306 char *path, *name, buffer[MAXPATHLEN]; 307 308 strcpy(buffer, pathname); 309 path = buffer; 310 ino = ROOTINO; 311 while (*path == '/') 312 path++; 313 dp = NULL; 314 while ((name = strsep(&path, "/")) != NULL && *name != '\0') { 315 if ((dp = searchdir(ino, name)) == NULL) 316 return (NULL); 317 ino = dp->d_ino; 318 } 319 return (dp); 320 } 321 322 /* 323 * Lookup the requested name in directory inum. 324 * Return its inode number if found, zero if it does not exist. 325 */ 326 static struct direct * 327 searchdir(inum, name) 328 ino_t inum; 329 char *name; 330 { 331 struct direct *dp; 332 struct inotab *itp; 333 int len; 334 335 itp = inotablookup(inum); 336 if (itp == NULL) 337 return (NULL); 338 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 339 len = strlen(name); 340 do { 341 dp = rst_readdir(dirp); 342 if (dp == NULL) 343 return (NULL); 344 } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0); 345 return (dp); 346 } 347 348 /* 349 * Put the directory entries in the directory file 350 */ 351 static void 352 putdir(buf, size) 353 char *buf; 354 long size; 355 { 356 struct direct cvtbuf; 357 struct odirect *odp; 358 struct odirect *eodp; 359 struct direct *dp; 360 long loc, i; 361 362 if (cvtflag) { 363 eodp = (struct odirect *)&buf[size]; 364 for (odp = (struct odirect *)buf; odp < eodp; odp++) 365 if (odp->d_ino != 0) { 366 dcvt(odp, &cvtbuf); 367 putent(&cvtbuf); 368 } 369 } else { 370 for (loc = 0; loc < size; ) { 371 dp = (struct direct *)(buf + loc); 372 if (Bcvt) 373 swabst((u_char *)"ls", (u_char *) dp); 374 if (oldinofmt && dp->d_ino != 0) { 375 # if BYTE_ORDER == BIG_ENDIAN 376 if (Bcvt) 377 dp->d_namlen = dp->d_type; 378 # else 379 if (!Bcvt) 380 dp->d_namlen = dp->d_type; 381 # endif 382 dp->d_type = DT_UNKNOWN; 383 } 384 i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1)); 385 if ((dp->d_reclen & 0x3) != 0 || 386 dp->d_reclen > i || 387 dp->d_reclen < DIRSIZ(0, dp, 0) /* || 388 dp->d_namlen > NAME_MAX */) { 389 vprintf(stdout, "Mangled directory: "); 390 if ((dp->d_reclen & 0x3) != 0) 391 vprintf(stdout, 392 "reclen not multiple of 4 "); 393 if (dp->d_reclen < DIRSIZ(0, dp, 0)) 394 vprintf(stdout, 395 "reclen less than DIRSIZ (%d < %lu) ", 396 dp->d_reclen, (u_long)DIRSIZ(0, dp, 0)); 397 #if 0 /* dp->d_namlen is a uint8_t, always < NAME_MAX */ 398 if (dp->d_namlen > NAME_MAX) 399 vprintf(stdout, 400 "reclen name too big (%d > %d) ", 401 dp->d_namlen, NAME_MAX); 402 #endif 403 vprintf(stdout, "\n"); 404 loc += i; 405 continue; 406 } 407 loc += dp->d_reclen; 408 if (dp->d_ino != 0) { 409 putent(dp); 410 } 411 } 412 } 413 } 414 415 /* 416 * These variables are "local" to the following two functions. 417 */ 418 char dirbuf[DIRBLKSIZ]; 419 long dirloc = 0; 420 long prev = 0; 421 422 /* 423 * add a new directory entry to a file. 424 */ 425 static void 426 putent(dp) 427 struct direct *dp; 428 { 429 dp->d_reclen = DIRSIZ(0, dp, 0); 430 if (dirloc + dp->d_reclen > DIRBLKSIZ) { 431 ((struct direct *)(dirbuf + prev))->d_reclen = 432 DIRBLKSIZ - prev; 433 (void) fwrite(dirbuf, 1, DIRBLKSIZ, df); 434 dirloc = 0; 435 } 436 memmove(dirbuf + dirloc, dp, (long)dp->d_reclen); 437 prev = dirloc; 438 dirloc += dp->d_reclen; 439 } 440 441 /* 442 * flush out a directory that is finished. 443 */ 444 static void 445 flushent() 446 { 447 ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev; 448 (void) fwrite(dirbuf, (int)dirloc, 1, df); 449 seekpt = ftell(df); 450 dirloc = 0; 451 } 452 453 static void 454 dcvt(odp, ndp) 455 struct odirect *odp; 456 struct direct *ndp; 457 { 458 459 memset(ndp, 0, (size_t)(sizeof *ndp)); 460 ndp->d_ino = odp->d_ino; 461 ndp->d_type = DT_UNKNOWN; 462 (void) strncpy(ndp->d_name, odp->d_name, ODIRSIZ); 463 ndp->d_namlen = strlen(ndp->d_name); 464 ndp->d_reclen = DIRSIZ(0, ndp, 0); 465 } 466 467 /* 468 * Seek to an entry in a directory. 469 * Only values returned by rst_telldir should be passed to rst_seekdir. 470 * This routine handles many directories in a single file. 471 * It takes the base of the directory in the file, plus 472 * the desired seek offset into it. 473 */ 474 static void 475 rst_seekdir(rdirp, loc, base) 476 RST_DIR *rdirp; 477 long loc, base; 478 { 479 480 if (loc == rst_telldir(rdirp)) 481 return; 482 loc -= base; 483 if (loc < 0) 484 fprintf(stderr, "bad seek pointer to rst_seekdir %d\n", 485 (int)loc); 486 (void) lseek(rdirp->dd_fd, base + (loc & ~(DIRBLKSIZ - 1)), SEEK_SET); 487 rdirp->dd_loc = loc & (DIRBLKSIZ - 1); 488 if (rdirp->dd_loc != 0) 489 rdirp->dd_size = read(rdirp->dd_fd, rdirp->dd_buf, DIRBLKSIZ); 490 } 491 492 /* 493 * get next entry in a directory. 494 */ 495 struct direct * 496 rst_readdir(rdirp) 497 RST_DIR *rdirp; 498 { 499 struct direct *dp; 500 501 for (;;) { 502 if (rdirp->dd_loc == 0) { 503 rdirp->dd_size = read(rdirp->dd_fd, rdirp->dd_buf, 504 DIRBLKSIZ); 505 if (rdirp->dd_size <= 0) { 506 dprintf(stderr, "error reading directory\n"); 507 return (NULL); 508 } 509 } 510 if (rdirp->dd_loc >= rdirp->dd_size) { 511 rdirp->dd_loc = 0; 512 continue; 513 } 514 dp = (struct direct *)(rdirp->dd_buf + rdirp->dd_loc); 515 if (dp->d_reclen == 0 || 516 dp->d_reclen > DIRBLKSIZ + 1 - rdirp->dd_loc) { 517 dprintf(stderr, "corrupted directory: bad reclen %d\n", 518 dp->d_reclen); 519 return (NULL); 520 } 521 rdirp->dd_loc += dp->d_reclen; 522 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0) 523 return (NULL); 524 if (dp->d_ino >= maxino) { 525 dprintf(stderr, "corrupted directory: bad inum %d\n", 526 dp->d_ino); 527 continue; 528 } 529 return (dp); 530 } 531 } 532 533 /* 534 * Simulate the opening of a directory 535 */ 536 RST_DIR * 537 rst_opendir(name) 538 const char *name; 539 { 540 struct inotab *itp; 541 RST_DIR *rdirp; 542 ino_t ino; 543 544 if ((ino = dirlookup(name)) > 0 && 545 (itp = inotablookup(ino)) != NULL) { 546 rdirp = opendirfile(dirfile); 547 rst_seekdir(rdirp, itp->t_seekpt, itp->t_seekpt); 548 return (rdirp); 549 } 550 return (NULL); 551 } 552 553 /* 554 * In our case, there is nothing to do when closing a directory. 555 */ 556 void 557 rst_closedir(rdirp) 558 RST_DIR *rdirp; 559 { 560 561 (void)close(rdirp->dd_fd); 562 free(rdirp); 563 return; 564 } 565 566 /* 567 * Simulate finding the current offset in the directory. 568 */ 569 static long 570 rst_telldir(rdirp) 571 RST_DIR *rdirp; 572 { 573 return ((long)lseek(rdirp->dd_fd, 574 (off_t)0, SEEK_CUR) - rdirp->dd_size + rdirp->dd_loc); 575 } 576 577 /* 578 * Open a directory file. 579 */ 580 static RST_DIR * 581 opendirfile(name) 582 const char *name; 583 { 584 RST_DIR *rdirp; 585 int fd; 586 587 if ((fd = open(name, O_RDONLY)) == -1) 588 return (NULL); 589 if ((rdirp = malloc(sizeof(RST_DIR))) == NULL) { 590 (void)close(fd); 591 return (NULL); 592 } 593 rdirp->dd_fd = fd; 594 rdirp->dd_loc = 0; 595 return (rdirp); 596 } 597 598 /* 599 * Set the mode, owner, and times for all new or changed directories 600 */ 601 void 602 setdirmodes(flags) 603 int flags; 604 { 605 FILE *mf; 606 struct modeinfo node; 607 struct entry *ep; 608 char *cp; 609 610 vprintf(stdout, "Set directory mode, owner, and times.\n"); 611 if (command == 'r' || command == 'R') 612 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%d", 613 tmpdir, (int)dumpdate); 614 if (modefile[0] == '#') { 615 panic("modefile not defined\n"); 616 fprintf(stderr, "directory mode, owner, and times not set\n"); 617 return; 618 } 619 mf = fopen(modefile, "r"); 620 if (mf == NULL) { 621 fprintf(stderr, "fopen: %s\n", strerror(errno)); 622 fprintf(stderr, "cannot open mode file %s\n", modefile); 623 fprintf(stderr, "directory mode, owner, and times not set\n"); 624 return; 625 } 626 clearerr(mf); 627 for (;;) { 628 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf); 629 if (feof(mf)) 630 break; 631 ep = lookupino(node.ino); 632 if (command == 'i' || command == 'x') { 633 if (ep == NULL) 634 continue; 635 if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) { 636 ep->e_flags &= ~NEW; 637 continue; 638 } 639 if (node.ino == ROOTINO && 640 reply("set owner/mode for '.'") == FAIL) 641 continue; 642 } 643 if (ep == NULL) { 644 panic("cannot find directory inode %d\n", node.ino); 645 } else { 646 if (!Nflag) { 647 cp = myname(ep); 648 (void) utimes(cp, node.timep); 649 (void) chown(cp, node.uid, node.gid); 650 (void) chmod(cp, node.mode); 651 (void) chflags(cp, node.flags); 652 } 653 ep->e_flags &= ~NEW; 654 } 655 } 656 if (ferror(mf)) 657 panic("error setting directory modes\n"); 658 (void) fclose(mf); 659 } 660 661 /* 662 * Generate a literal copy of a directory. 663 */ 664 int 665 genliteraldir(name, ino) 666 char *name; 667 ino_t ino; 668 { 669 struct inotab *itp; 670 int ofile, dp, i, size; 671 char buf[BUFSIZ]; 672 673 itp = inotablookup(ino); 674 if (itp == NULL) 675 panic("Cannot find directory inode %d named %s\n", ino, name); 676 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) { 677 fprintf(stderr, "%s: ", name); 678 (void) fflush(stderr); 679 fprintf(stderr, "cannot create file: %s\n", strerror(errno)); 680 return (FAIL); 681 } 682 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 683 dp = dup(dirp->dd_fd); 684 for (i = itp->t_size; i > 0; i -= BUFSIZ) { 685 size = i < BUFSIZ ? i : BUFSIZ; 686 if (read(dp, buf, (int) size) == -1) { 687 fprintf(stderr, 688 "write error extracting inode %d, name %s\n", 689 curfile.ino, curfile.name); 690 fprintf(stderr, "read: %s\n", strerror(errno)); 691 exit(1); 692 } 693 if (!Nflag && write(ofile, buf, (int) size) == -1) { 694 fprintf(stderr, 695 "write error extracting inode %d, name %s\n", 696 curfile.ino, curfile.name); 697 fprintf(stderr, "write: %s\n", strerror(errno)); 698 exit(1); 699 } 700 } 701 (void) close(dp); 702 (void) close(ofile); 703 return (GOOD); 704 } 705 706 /* 707 * Determine the type of an inode 708 */ 709 int 710 inodetype(ino) 711 ino_t ino; 712 { 713 struct inotab *itp; 714 715 itp = inotablookup(ino); 716 if (itp == NULL) 717 return (LEAF); 718 return (NODE); 719 } 720 721 /* 722 * Allocate and initialize a directory inode entry. 723 * If requested, save its pertinent mode, owner, and time info. 724 */ 725 static struct inotab * 726 allocinotab(mf, ino, dip, aseekpt) 727 FILE *mf; 728 ino_t ino; 729 struct dinode *dip; 730 long aseekpt; 731 { 732 struct inotab *itp; 733 struct modeinfo node; 734 735 itp = calloc(1, sizeof(struct inotab)); 736 if (itp == NULL) 737 panic("no memory directory table\n"); 738 itp->t_next = inotab[INOHASH(ino)]; 739 inotab[INOHASH(ino)] = itp; 740 itp->t_ino = ino; 741 itp->t_seekpt = aseekpt; 742 if (mf == NULL) 743 return (itp); 744 node.ino = ino; 745 node.timep[0].tv_sec = dip->di_atime; 746 node.timep[0].tv_usec = dip->di_atimensec / 1000; 747 node.timep[1].tv_sec = dip->di_mtime; 748 node.timep[1].tv_usec = dip->di_mtimensec / 1000; 749 node.mode = dip->di_mode; 750 node.flags = dip->di_flags; 751 node.uid = dip->di_uid; 752 node.gid = dip->di_gid; 753 (void) fwrite((char *)&node, 1, sizeof(struct modeinfo), mf); 754 return (itp); 755 } 756 757 /* 758 * Look up an inode in the table of directories 759 */ 760 static struct inotab * 761 inotablookup(ino) 762 ino_t ino; 763 { 764 struct inotab *itp; 765 766 for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next) 767 if (itp->t_ino == ino) 768 return (itp); 769 return (NULL); 770 } 771 772 /* 773 * Clean up and exit 774 */ 775 void 776 cleanup() 777 { 778 779 closemt(); 780 if (modefile[0] != '#') 781 (void) unlink(modefile); 782 if (dirfile[0] != '#') 783 (void) unlink(dirfile); 784 } 785
Indexes created Thu Sep 25 02:09:54 GMT 2025