1 /* $NetBSD: fsdb.c,v 1.2 1995/10/08 23:18:10 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1995 John T. Kohl 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef lint 32 static const char rcsid[] = 33 "$FreeBSD$"; 34 #endif /* not lint */ 35 36 #include <sys/param.h> 37 #include <sys/time.h> 38 #include <ctype.h> 39 #include <err.h> 40 #include <grp.h> 41 #include <histedit.h> 42 #include <pwd.h> 43 #include <string.h> 44 45 #include <ufs/ufs/dinode.h> 46 #include <ufs/ufs/dir.h> 47 #include <ufs/ffs/fs.h> 48 49 #include "fsdb.h" 50 #include "fsck.h" 51 52 static void usage(void) __dead2; 53 int cmdloop(void); 54 55 static void 56 usage(void) 57 { 58 fprintf(stderr, "usage: fsdb [-d] [-f] [-r] fsname\n"); 59 exit(1); 60 } 61 62 int returntosingle; 63 char nflag; 64 65 /* 66 * We suck in lots of fsck code, and just pick & choose the stuff we want. 67 * 68 * fsreadfd is set up to read from the filesystem, fswritefd to write to 69 * the filesystem. 70 */ 71 int 72 main(int argc, char *argv[]) 73 { 74 int ch, rval; 75 char *fsys = NULL; 76 77 while (-1 != (ch = getopt(argc, argv, "fdr"))) { 78 switch (ch) { 79 case 'f': 80 /* The -f option is left for historical 81 * reasons and has no meaning. 82 */ 83 break; 84 case 'd': 85 debug++; 86 break; 87 case 'r': 88 nflag++; /* "no" in fsck, readonly for us */ 89 break; 90 default: 91 usage(); 92 } 93 } 94 argc -= optind; 95 argv += optind; 96 if (argc != 1) 97 usage(); 98 else 99 fsys = argv[0]; 100 101 sblock_init(); 102 if (!setup(fsys)) 103 errx(1, "cannot set up filesystem `%s'", fsys); 104 printf("%s filesystem `%s'\nLast Mounted on %s\n", 105 nflag? "Examining": "Editing", fsys, sblock.fs_fsmnt); 106 rval = cmdloop(); 107 if (!nflag) { 108 sblock.fs_clean = 0; /* mark it dirty */ 109 sbdirty(); 110 ckfini(0); 111 printf("*** FILE SYSTEM MARKED DIRTY\n"); 112 printf("*** BE SURE TO RUN FSCK TO CLEAN UP ANY DAMAGE\n"); 113 printf("*** IF IT WAS MOUNTED, RE-MOUNT WITH -u -o reload\n"); 114 } 115 exit(rval); 116 } 117 118 #define CMDFUNC(func) int func(int argc, char *argv[]) 119 #define CMDFUNCSTART(func) int func(int argc, char *argv[]) 120 121 CMDFUNC(helpfn); 122 CMDFUNC(focus); /* focus on inode */ 123 CMDFUNC(active); /* print active inode */ 124 CMDFUNC(blocks); /* print blocks for active inode */ 125 CMDFUNC(focusname); /* focus by name */ 126 CMDFUNC(zapi); /* clear inode */ 127 CMDFUNC(uplink); /* incr link */ 128 CMDFUNC(downlink); /* decr link */ 129 CMDFUNC(linkcount); /* set link count */ 130 CMDFUNC(quit); /* quit */ 131 CMDFUNC(ls); /* list directory */ 132 CMDFUNC(rm); /* remove name */ 133 CMDFUNC(ln); /* add name */ 134 CMDFUNC(newtype); /* change type */ 135 CMDFUNC(chmode); /* change mode */ 136 CMDFUNC(chlen); /* change length */ 137 CMDFUNC(chaflags); /* change flags */ 138 CMDFUNC(chgen); /* change generation */ 139 CMDFUNC(chowner); /* change owner */ 140 CMDFUNC(chgroup); /* Change group */ 141 CMDFUNC(back); /* pop back to last ino */ 142 CMDFUNC(chmtime); /* Change mtime */ 143 CMDFUNC(chctime); /* Change ctime */ 144 CMDFUNC(chatime); /* Change atime */ 145 CMDFUNC(chinum); /* Change inode # of dirent */ 146 CMDFUNC(chname); /* Change dirname of dirent */ 147 148 struct cmdtable cmds[] = { 149 { "help", "Print out help", 1, 1, FL_RO, helpfn }, 150 { "?", "Print out help", 1, 1, FL_RO, helpfn }, 151 { "inode", "Set active inode to INUM", 2, 2, FL_RO, focus }, 152 { "clri", "Clear inode INUM", 2, 2, FL_WR, zapi }, 153 { "lookup", "Set active inode by looking up NAME", 2, 2, FL_RO, focusname }, 154 { "cd", "Set active inode by looking up NAME", 2, 2, FL_RO, focusname }, 155 { "back", "Go to previous active inode", 1, 1, FL_RO, back }, 156 { "active", "Print active inode", 1, 1, FL_RO, active }, 157 { "print", "Print active inode", 1, 1, FL_RO, active }, 158 { "blocks", "Print block numbers of active inode", 1, 1, FL_RO, blocks }, 159 { "uplink", "Increment link count", 1, 1, FL_WR, uplink }, 160 { "downlink", "Decrement link count", 1, 1, FL_WR, downlink }, 161 { "linkcount", "Set link count to COUNT", 2, 2, FL_WR, linkcount }, 162 { "ls", "List current inode as directory", 1, 1, FL_RO, ls }, 163 { "rm", "Remove NAME from current inode directory", 2, 2, FL_WR, rm }, 164 { "del", "Remove NAME from current inode directory", 2, 2, FL_WR, rm }, 165 { "ln", "Hardlink INO into current inode directory as NAME", 3, 3, FL_WR, ln }, 166 { "chinum", "Change dir entry number INDEX to INUM", 3, 3, FL_WR, chinum }, 167 { "chname", "Change dir entry number INDEX to NAME", 3, 3, FL_WR, chname }, 168 { "chtype", "Change type of current inode to TYPE", 2, 2, FL_WR, newtype }, 169 { "chmod", "Change mode of current inode to MODE", 2, 2, FL_WR, chmode }, 170 { "chlen", "Change length of current inode to LENGTH", 2, 2, FL_WR, chlen }, 171 { "chown", "Change owner of current inode to OWNER", 2, 2, FL_WR, chowner }, 172 { "chgrp", "Change group of current inode to GROUP", 2, 2, FL_WR, chgroup }, 173 { "chflags", "Change flags of current inode to FLAGS", 2, 2, FL_WR, chaflags }, 174 { "chgen", "Change generation number of current inode to GEN", 2, 2, FL_WR, chgen }, 175 { "mtime", "Change mtime of current inode to MTIME", 2, 2, FL_WR, chmtime }, 176 { "ctime", "Change ctime of current inode to CTIME", 2, 2, FL_WR, chctime }, 177 { "atime", "Change atime of current inode to ATIME", 2, 2, FL_WR, chatime }, 178 { "quit", "Exit", 1, 1, FL_RO, quit }, 179 { "q", "Exit", 1, 1, FL_RO, quit }, 180 { "exit", "Exit", 1, 1, FL_RO, quit }, 181 { NULL, 0, 0, 0 }, 182 }; 183 184 int 185 helpfn(int argc, char *argv[]) 186 { 187 struct cmdtable *cmdtp; 188 189 printf("Commands are:\n%-10s %5s %5s %s\n", 190 "command", "min argc", "max argc", "what"); 191 192 for (cmdtp = cmds; cmdtp->cmd; cmdtp++) 193 printf("%-10s %5u %5u %s\n", 194 cmdtp->cmd, cmdtp->minargc, cmdtp->maxargc, cmdtp->helptxt); 195 return 0; 196 } 197 198 char * 199 prompt(EditLine *el) 200 { 201 static char pstring[64]; 202 snprintf(pstring, sizeof(pstring), "fsdb (inum: %d)> ", curinum); 203 return pstring; 204 } 205 206 207 int 208 cmdloop(void) 209 { 210 char *line; 211 const char *elline; 212 int cmd_argc, rval = 0, known; 213 #define scratch known 214 char **cmd_argv; 215 struct cmdtable *cmdp; 216 History *hist; 217 EditLine *elptr; 218 HistEvent he; 219 220 curinode = ginode(ROOTINO); 221 curinum = ROOTINO; 222 printactive(0); 223 224 hist = history_init(); 225 history(hist, &he, H_EVENT, 100); /* 100 elt history buffer */ 226 227 elptr = el_init("fsdb", stdin, stdout, stderr); 228 el_set(elptr, EL_EDITOR, "emacs"); 229 el_set(elptr, EL_PROMPT, prompt); 230 el_set(elptr, EL_HIST, history, hist); 231 el_source(elptr, NULL); 232 233 while ((elline = el_gets(elptr, &scratch)) != NULL && scratch != 0) { 234 if (debug) 235 printf("command `%s'\n", elline); 236 237 history(hist, &he, H_ENTER, elline); 238 239 line = strdup(elline); 240 cmd_argv = crack(line, &cmd_argc); 241 /* 242 * el_parse returns -1 to signal that it's not been handled 243 * internally. 244 */ 245 if (el_parse(elptr, cmd_argc, cmd_argv) != -1) 246 continue; 247 if (cmd_argc) { 248 known = 0; 249 for (cmdp = cmds; cmdp->cmd; cmdp++) { 250 if (!strcmp(cmdp->cmd, cmd_argv[0])) { 251 if ((cmdp->flags & FL_WR) == FL_WR && nflag) 252 warnx("`%s' requires write access", cmd_argv[0]), 253 rval = 1; 254 else if (cmd_argc >= cmdp->minargc && 255 cmd_argc <= cmdp->maxargc) 256 rval = (*cmdp->handler)(cmd_argc, cmd_argv); 257 else if (cmd_argc >= cmdp->minargc) { 258 strcpy(line, elline); 259 cmd_argv = recrack(line, &cmd_argc, cmdp->maxargc); 260 rval = (*cmdp->handler)(cmd_argc, cmd_argv); 261 } else 262 rval = argcount(cmdp, cmd_argc, cmd_argv); 263 known = 1; 264 break; 265 } 266 } 267 if (!known) 268 warnx("unknown command `%s'", cmd_argv[0]), rval = 1; 269 } else 270 rval = 0; 271 free(line); 272 if (rval < 0) 273 /* user typed "quit" */ 274 return 0; 275 if (rval) 276 warnx("rval was %d", rval); 277 } 278 el_end(elptr); 279 history_end(hist); 280 return rval; 281 } 282 283 struct dinode *curinode; 284 ino_t curinum, ocurrent; 285 286 #define GETINUM(ac,inum) inum = strtoul(argv[ac], &cp, 0); \ 287 if (inum < ROOTINO || inum > maxino || cp == argv[ac] || *cp != '\0' ) { \ 288 printf("inode %d out of range; range is [%d,%d]\n", \ 289 inum, ROOTINO, maxino); \ 290 return 1; \ 291 } 292 293 /* 294 * Focus on given inode number 295 */ 296 CMDFUNCSTART(focus) 297 { 298 ino_t inum; 299 char *cp; 300 301 GETINUM(1,inum); 302 curinode = ginode(inum); 303 ocurrent = curinum; 304 curinum = inum; 305 printactive(0); 306 return 0; 307 } 308 309 CMDFUNCSTART(back) 310 { 311 curinum = ocurrent; 312 curinode = ginode(curinum); 313 printactive(0); 314 return 0; 315 } 316 317 CMDFUNCSTART(zapi) 318 { 319 ino_t inum; 320 struct dinode *dp; 321 char *cp; 322 323 GETINUM(1,inum); 324 dp = ginode(inum); 325 clearinode(dp); 326 inodirty(); 327 if (curinode) /* re-set after potential change */ 328 curinode = ginode(curinum); 329 return 0; 330 } 331 332 CMDFUNCSTART(active) 333 { 334 printactive(0); 335 return 0; 336 } 337 338 CMDFUNCSTART(blocks) 339 { 340 printactive(1); 341 return 0; 342 } 343 344 CMDFUNCSTART(quit) 345 { 346 return -1; 347 } 348 349 CMDFUNCSTART(uplink) 350 { 351 if (!checkactive()) 352 return 1; 353 printf("inode %d link count now %d\n", curinum, ++curinode->di_nlink); 354 inodirty(); 355 return 0; 356 } 357 358 CMDFUNCSTART(downlink) 359 { 360 if (!checkactive()) 361 return 1; 362 printf("inode %d link count now %d\n", curinum, --curinode->di_nlink); 363 inodirty(); 364 return 0; 365 } 366 367 const char *typename[] = { 368 "unknown", 369 "fifo", 370 "char special", 371 "unregistered #3", 372 "directory", 373 "unregistered #5", 374 "blk special", 375 "unregistered #7", 376 "regular", 377 "unregistered #9", 378 "symlink", 379 "unregistered #11", 380 "socket", 381 "unregistered #13", 382 "whiteout", 383 }; 384 385 int slot; 386 387 int 388 scannames(struct inodesc *idesc) 389 { 390 struct direct *dirp = idesc->id_dirp; 391 392 printf("slot %d ino %d reclen %d: %s, `%.*s'\n", 393 slot++, dirp->d_ino, dirp->d_reclen, typename[dirp->d_type], 394 dirp->d_namlen, dirp->d_name); 395 return (KEEPON); 396 } 397 398 CMDFUNCSTART(ls) 399 { 400 struct inodesc idesc; 401 checkactivedir(); /* let it go on anyway */ 402 403 slot = 0; 404 idesc.id_number = curinum; 405 idesc.id_func = scannames; 406 idesc.id_type = DATA; 407 idesc.id_fix = IGNORE; 408 ckinode(curinode, &idesc); 409 curinode = ginode(curinum); 410 411 return 0; 412 } 413 414 int findino(struct inodesc *idesc); /* from fsck */ 415 static int dolookup(char *name); 416 417 static int 418 dolookup(char *name) 419 { 420 struct inodesc idesc; 421 422 if (!checkactivedir()) 423 return 0; 424 idesc.id_number = curinum; 425 idesc.id_func = findino; 426 idesc.id_name = name; 427 idesc.id_type = DATA; 428 idesc.id_fix = IGNORE; 429 if (ckinode(curinode, &idesc) & FOUND) { 430 curinum = idesc.id_parent; 431 curinode = ginode(curinum); 432 printactive(0); 433 return 1; 434 } else { 435 warnx("name `%s' not found in current inode directory", name); 436 return 0; 437 } 438 } 439 440 CMDFUNCSTART(focusname) 441 { 442 char *p, *val; 443 444 if (!checkactive()) 445 return 1; 446 447 ocurrent = curinum; 448 449 if (argv[1][0] == '/') { 450 curinum = ROOTINO; 451 curinode = ginode(ROOTINO); 452 } else { 453 if (!checkactivedir()) 454 return 1; 455 } 456 for (p = argv[1]; p != NULL;) { 457 while ((val = strsep(&p, "/")) != NULL && *val == '\0'); 458 if (val) { 459 printf("component `%s': ", val); 460 fflush(stdout); 461 if (!dolookup(val)) { 462 curinode = ginode(curinum); 463 return(1); 464 } 465 } 466 } 467 return 0; 468 } 469 470 CMDFUNCSTART(ln) 471 { 472 ino_t inum; 473 int rval; 474 char *cp; 475 476 GETINUM(1,inum); 477 478 if (!checkactivedir()) 479 return 1; 480 rval = makeentry(curinum, inum, argv[2]); 481 if (rval) 482 printf("Ino %d entered as `%s'\n", inum, argv[2]); 483 else 484 printf("could not enter name? weird.\n"); 485 curinode = ginode(curinum); 486 return rval; 487 } 488 489 CMDFUNCSTART(rm) 490 { 491 int rval; 492 493 if (!checkactivedir()) 494 return 1; 495 rval = changeino(curinum, argv[1], 0); 496 if (rval & ALTERED) { 497 printf("Name `%s' removed\n", argv[1]); 498 return 0; 499 } else { 500 printf("could not remove name ('%s')? weird.\n", argv[1]); 501 return 1; 502 } 503 } 504 505 long slotcount, desired; 506 507 int 508 chinumfunc(struct inodesc *idesc) 509 { 510 struct direct *dirp = idesc->id_dirp; 511 512 if (slotcount++ == desired) { 513 dirp->d_ino = idesc->id_parent; 514 return STOP|ALTERED|FOUND; 515 } 516 return KEEPON; 517 } 518 519 CMDFUNCSTART(chinum) 520 { 521 char *cp; 522 ino_t inum; 523 struct inodesc idesc; 524 525 slotcount = 0; 526 if (!checkactivedir()) 527 return 1; 528 GETINUM(2,inum); 529 530 desired = strtol(argv[1], &cp, 0); 531 if (cp == argv[1] || *cp != '\0' || desired < 0) { 532 printf("invalid slot number `%s'\n", argv[1]); 533 return 1; 534 } 535 536 idesc.id_number = curinum; 537 idesc.id_func = chinumfunc; 538 idesc.id_fix = IGNORE; 539 idesc.id_type = DATA; 540 idesc.id_parent = inum; /* XXX convenient hiding place */ 541 542 if (ckinode(curinode, &idesc) & FOUND) 543 return 0; 544 else { 545 warnx("no %sth slot in current directory", argv[1]); 546 return 1; 547 } 548 } 549 550 int 551 chnamefunc(struct inodesc *idesc) 552 { 553 struct direct *dirp = idesc->id_dirp; 554 struct direct testdir; 555 556 if (slotcount++ == desired) { 557 /* will name fit? */ 558 testdir.d_namlen = strlen(idesc->id_name); 559 if (DIRSIZ(NEWDIRFMT, &testdir) <= dirp->d_reclen) { 560 dirp->d_namlen = testdir.d_namlen; 561 strcpy(dirp->d_name, idesc->id_name); 562 return STOP|ALTERED|FOUND; 563 } else 564 return STOP|FOUND; /* won't fit, so give up */ 565 } 566 return KEEPON; 567 } 568 569 CMDFUNCSTART(chname) 570 { 571 int rval; 572 char *cp; 573 struct inodesc idesc; 574 575 slotcount = 0; 576 if (!checkactivedir()) 577 return 1; 578 579 desired = strtoul(argv[1], &cp, 0); 580 if (cp == argv[1] || *cp != '\0') { 581 printf("invalid slot number `%s'\n", argv[1]); 582 return 1; 583 } 584 585 idesc.id_number = curinum; 586 idesc.id_func = chnamefunc; 587 idesc.id_fix = IGNORE; 588 idesc.id_type = DATA; 589 idesc.id_name = argv[2]; 590 591 rval = ckinode(curinode, &idesc); 592 if ((rval & (FOUND|ALTERED)) == (FOUND|ALTERED)) 593 return 0; 594 else if (rval & FOUND) { 595 warnx("new name `%s' does not fit in slot %s\n", argv[2], argv[1]); 596 return 1; 597 } else { 598 warnx("no %sth slot in current directory", argv[1]); 599 return 1; 600 } 601 } 602 603 struct typemap { 604 const char *typename; 605 int typebits; 606 } typenamemap[] = { 607 {"file", IFREG}, 608 {"dir", IFDIR}, 609 {"socket", IFSOCK}, 610 {"fifo", IFIFO}, 611 }; 612 613 CMDFUNCSTART(newtype) 614 { 615 int type; 616 struct typemap *tp; 617 618 if (!checkactive()) 619 return 1; 620 type = curinode->di_mode & IFMT; 621 for (tp = typenamemap; 622 tp < &typenamemap[sizeof(typenamemap)/sizeof(*typenamemap)]; 623 tp++) { 624 if (!strcmp(argv[1], tp->typename)) { 625 printf("setting type to %s\n", tp->typename); 626 type = tp->typebits; 627 break; 628 } 629 } 630 if (tp == &typenamemap[sizeof(typenamemap)/sizeof(*typenamemap)]) { 631 warnx("type `%s' not known", argv[1]); 632 warnx("try one of `file', `dir', `socket', `fifo'"); 633 return 1; 634 } 635 curinode->di_mode &= ~IFMT; 636 curinode->di_mode |= type; 637 inodirty(); 638 printactive(0); 639 return 0; 640 } 641 642 CMDFUNCSTART(chlen) 643 { 644 int rval = 1; 645 long len; 646 char *cp; 647 648 if (!checkactive()) 649 return 1; 650 651 len = strtol(argv[1], &cp, 0); 652 if (cp == argv[1] || *cp != '\0' || len < 0) { 653 warnx("bad length `%s'", argv[1]); 654 return 1; 655 } 656 657 curinode->di_size = len; 658 inodirty(); 659 printactive(0); 660 return rval; 661 } 662 663 CMDFUNCSTART(chmode) 664 { 665 int rval = 1; 666 long modebits; 667 char *cp; 668 669 if (!checkactive()) 670 return 1; 671 672 modebits = strtol(argv[1], &cp, 8); 673 if (cp == argv[1] || *cp != '\0' || (modebits & ~07777)) { 674 warnx("bad modebits `%s'", argv[1]); 675 return 1; 676 } 677 678 curinode->di_mode &= ~07777; 679 curinode->di_mode |= modebits; 680 inodirty(); 681 printactive(0); 682 return rval; 683 } 684 685 CMDFUNCSTART(chaflags) 686 { 687 int rval = 1; 688 u_long flags; 689 char *cp; 690 691 if (!checkactive()) 692 return 1; 693 694 flags = strtoul(argv[1], &cp, 0); 695 if (cp == argv[1] || *cp != '\0' ) { 696 warnx("bad flags `%s'", argv[1]); 697 return 1; 698 } 699 700 if (flags > UINT_MAX) { 701 warnx("flags set beyond 32-bit range of field (%lx)\n", flags); 702 return(1); 703 } 704 curinode->di_flags = flags; 705 inodirty(); 706 printactive(0); 707 return rval; 708 } 709 710 CMDFUNCSTART(chgen) 711 { 712 int rval = 1; 713 long gen; 714 char *cp; 715 716 if (!checkactive()) 717 return 1; 718 719 gen = strtol(argv[1], &cp, 0); 720 if (cp == argv[1] || *cp != '\0' ) { 721 warnx("bad gen `%s'", argv[1]); 722 return 1; 723 } 724 725 if (gen > INT_MAX || gen < INT_MIN) { 726 warnx("gen set beyond 32-bit range of field (%lx)\n", gen); 727 return(1); 728 } 729 curinode->di_gen = gen; 730 inodirty(); 731 printactive(0); 732 return rval; 733 } 734 735 CMDFUNCSTART(linkcount) 736 { 737 int rval = 1; 738 int lcnt; 739 char *cp; 740 741 if (!checkactive()) 742 return 1; 743 744 lcnt = strtol(argv[1], &cp, 0); 745 if (cp == argv[1] || *cp != '\0' ) { 746 warnx("bad link count `%s'", argv[1]); 747 return 1; 748 } 749 if (lcnt > USHRT_MAX || lcnt < 0) { 750 warnx("max link count is %d\n", USHRT_MAX); 751 return 1; 752 } 753 754 curinode->di_nlink = lcnt; 755 inodirty(); 756 printactive(0); 757 return rval; 758 } 759 760 CMDFUNCSTART(chowner) 761 { 762 int rval = 1; 763 unsigned long uid; 764 char *cp; 765 struct passwd *pwd; 766 767 if (!checkactive()) 768 return 1; 769 770 uid = strtoul(argv[1], &cp, 0); 771 if (cp == argv[1] || *cp != '\0' ) { 772 /* try looking up name */ 773 if ((pwd = getpwnam(argv[1]))) { 774 uid = pwd->pw_uid; 775 } else { 776 warnx("bad uid `%s'", argv[1]); 777 return 1; 778 } 779 } 780 781 curinode->di_uid = uid; 782 inodirty(); 783 printactive(0); 784 return rval; 785 } 786 787 CMDFUNCSTART(chgroup) 788 { 789 int rval = 1; 790 unsigned long gid; 791 char *cp; 792 struct group *grp; 793 794 if (!checkactive()) 795 return 1; 796 797 gid = strtoul(argv[1], &cp, 0); 798 if (cp == argv[1] || *cp != '\0' ) { 799 if ((grp = getgrnam(argv[1]))) { 800 gid = grp->gr_gid; 801 } else { 802 warnx("bad gid `%s'", argv[1]); 803 return 1; 804 } 805 } 806 807 curinode->di_gid = gid; 808 inodirty(); 809 printactive(0); 810 return rval; 811 } 812 813 int 814 dotime(char *name, struct timespec *rts) 815 { 816 char *p, *val; 817 struct tm t; 818 int32_t sec; 819 int32_t nsec; 820 p = strchr(name, '.'); 821 if (p) { 822 *p = '\0'; 823 nsec = strtoul(++p, &val, 0); 824 if (val == p || *val != '\0' || nsec >= 1000000000 || nsec < 0) { 825 warnx("invalid nanoseconds"); 826 goto badformat; 827 } 828 } else 829 nsec = 0; 830 if (strlen(name) != 14) { 831 badformat: 832 warnx("date format: YYYYMMDDHHMMSS[.nsec]"); 833 return 1; 834 } 835 836 for (p = name; *p; p++) 837 if (*p < '0' || *p > '9') 838 goto badformat; 839 840 p = name; 841 #define VAL() ((*p++) - '0') 842 t.tm_year = VAL(); 843 t.tm_year = VAL() + t.tm_year * 10; 844 t.tm_year = VAL() + t.tm_year * 10; 845 t.tm_year = VAL() + t.tm_year * 10 - 1900; 846 t.tm_mon = VAL(); 847 t.tm_mon = VAL() + t.tm_mon * 10 - 1; 848 t.tm_mday = VAL(); 849 t.tm_mday = VAL() + t.tm_mday * 10; 850 t.tm_hour = VAL(); 851 t.tm_hour = VAL() + t.tm_hour * 10; 852 t.tm_min = VAL(); 853 t.tm_min = VAL() + t.tm_min * 10; 854 t.tm_sec = VAL(); 855 t.tm_sec = VAL() + t.tm_sec * 10; 856 t.tm_isdst = -1; 857 858 sec = mktime(&t); 859 if (sec == -1) { 860 warnx("date/time out of range"); 861 return 1; 862 } 863 rts->tv_sec = sec; 864 rts->tv_nsec = nsec; 865 return 0; 866 } 867 868 CMDFUNCSTART(chmtime) 869 { 870 if (dotime(argv[1], &curinode->di_ctime)) 871 return 1; 872 inodirty(); 873 printactive(0); 874 return 0; 875 } 876 877 CMDFUNCSTART(chatime) 878 { 879 if (dotime(argv[1], &curinode->di_ctime)) 880 return 1; 881 inodirty(); 882 printactive(0); 883 return 0; 884 } 885 886 CMDFUNCSTART(chctime) 887 { 888 if (dotime(argv[1], &curinode->di_ctime)) 889 return 1; 890 inodirty(); 891 printactive(0); 892 return 0; 893 } 894