main.c revision 1.51
1 /* $NetBSD: main.c,v 1.51 2002/11/16 14:15:35 itojun Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1991, 1993, 1994 5 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95"; 45 #else 46 __RCSID("$NetBSD: main.c,v 1.51 2002/11/16 14:15:35 itojun Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/stat.h> 53 #include <sys/mount.h> 54 55 #include <ufs/ufs/dinode.h> 56 #include <ufs/ffs/fs.h> 57 #include <ufs/ffs/ffs_extern.h> 58 59 #include <protocols/dumprestore.h> 60 61 #include <ctype.h> 62 #include <err.h> 63 #include <errno.h> 64 #include <fcntl.h> 65 #include <fstab.h> 66 #include <signal.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <time.h> 71 #include <unistd.h> 72 73 #include "dump.h" 74 #include "pathnames.h" 75 76 gid_t egid; /* Retain tty privs for notification */ 77 int timestamp; /* print message timestamps */ 78 int notify; /* notify operator flag */ 79 int blockswritten; /* number of blocks written on current tape */ 80 int tapeno; /* current tape number */ 81 int density; /* density in bytes/0.1" */ 82 int ntrec = NTREC; /* # tape blocks in each tape record */ 83 int cartridge; /* Assume non-cartridge tape */ 84 long dev_bsize = 1; /* recalculated below */ 85 long blocksperfile; /* output blocks per file */ 86 char *host; /* remote host (if any) */ 87 int readcache = -1; /* read cache size (in readblksize blks) */ 88 int readblksize = 32 * 1024; /* read block size */ 89 char default_time_string[] = "%T %Z"; /* default timestamp string */ 90 char *time_string = default_time_string; /* timestamp string */ 91 92 int main(int, char *[]); 93 static long numarg(char *, long, long); 94 static void obsolete(int *, char **[]); 95 static void usage(void); 96 97 int 98 main(int argc, char *argv[]) 99 { 100 ino_t ino; 101 int dirty; 102 struct dinode *dp; 103 struct fstab *dt; 104 struct statfs *mntinfo, fsbuf; 105 char *map; 106 int ch; 107 int i, anydirskipped, bflag = 0, Tflag = 0, Fflag = 0, honorlevel = 1; 108 ino_t maxino; 109 time_t tnow, date; 110 int dirc; 111 char *mountpoint; 112 int just_estimate = 0; 113 char labelstr[LBLSIZE]; 114 char *new_time_format; 115 116 spcl.c_date = 0; 117 (void)time(&tnow); 118 spcl.c_date = tnow; 119 tzset(); /* set up timezone for strftime */ 120 if ((new_time_format = getenv("TIMEFORMAT")) != NULL) 121 time_string = new_time_format; 122 123 /* Save setgid bit for use later */ 124 egid = getegid(); 125 setegid(getgid()); 126 127 tsize = 0; /* Default later, based on 'c' option for cart tapes */ 128 if ((tape = getenv("TAPE")) == NULL) 129 tape = _PATH_DEFTAPE; 130 dumpdates = _PATH_DUMPDATES; 131 temp = _PATH_DTMP; 132 strcpy(labelstr, "none"); /* XXX safe strcpy. */ 133 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0) 134 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n"); 135 level = '0'; 136 timestamp = 0; 137 138 if (argc < 2) 139 usage(); 140 141 obsolete(&argc, &argv); 142 while ((ch = getopt(argc, argv, 143 "0123456789aB:b:cd:eFf:h:k:l:L:nr:s:StT:uWw")) != -1) 144 switch (ch) { 145 /* dump level */ 146 case '0': case '1': case '2': case '3': case '4': 147 case '5': case '6': case '7': case '8': case '9': 148 level = ch; 149 break; 150 151 case 'a': /* `auto-size', Write to EOM. */ 152 unlimited = 1; 153 break; 154 155 case 'B': /* blocks per output file */ 156 blocksperfile = numarg("blocks per file", 1L, 0L); 157 break; 158 159 case 'b': /* blocks per tape write */ 160 ntrec = numarg("blocks per write", 1L, 1000L); 161 bflag = 1; 162 break; 163 164 case 'c': /* Tape is cart. not 9-track */ 165 cartridge = 1; 166 break; 167 168 case 'd': /* density, in bits per inch */ 169 density = numarg("density", 10L, 327670L) / 10; 170 if (density >= 625 && !bflag) 171 ntrec = HIGHDENSITYTREC; 172 break; 173 174 case 'e': /* eject full tapes */ 175 eflag = 1; 176 break; 177 178 case 'F': /* files-to-dump is an fs image */ 179 Fflag = 1; 180 break; 181 182 case 'f': /* output file */ 183 tape = optarg; 184 break; 185 186 case 'h': 187 honorlevel = numarg("honor level", 0L, 10L); 188 break; 189 190 case 'k': 191 readblksize = numarg("read block size", 0, 64) * 1024; 192 break; 193 194 case 'l': /* autoload after eject full tapes */ 195 eflag = 1; 196 lflag = numarg("timeout (in seconds)", 1, 0); 197 break; 198 199 case 'L': 200 /* 201 * Note that although there are LBLSIZE characters, 202 * the last must be '\0', so the limit on strlen() 203 * is really LBLSIZE-1. 204 */ 205 if (strlcpy(labelstr, optarg, sizeof(labelstr)) 206 >= sizeof(labelstr)) { 207 msg( 208 "WARNING Label `%s' is larger than limit of %d characters.\n", 209 optarg, sizeof(labelstr) - 1); 210 msg("WARNING: Using truncated label `%s'.\n", 211 labelstr); 212 } 213 break; 214 case 'n': /* notify operators */ 215 notify = 1; 216 break; 217 218 case 'r': /* read cache size */ 219 readcache = numarg("read cache size", 0, 512); 220 break; 221 222 case 's': /* tape size, feet */ 223 tsize = numarg("tape size", 1L, 0L) * 12 * 10; 224 break; 225 226 case 'S': /* exit after estimating # of tapes */ 227 just_estimate = 1; 228 break; 229 230 case 't': 231 timestamp = 1; 232 break; 233 234 case 'T': /* time of last dump */ 235 spcl.c_ddate = unctime(optarg); 236 if (spcl.c_ddate < 0) { 237 (void)fprintf(stderr, "bad time \"%s\"\n", 238 optarg); 239 exit(X_STARTUP); 240 } 241 Tflag = 1; 242 lastlevel = '?'; 243 break; 244 245 case 'u': /* update /etc/dumpdates */ 246 uflag = 1; 247 break; 248 249 case 'W': /* what to do */ 250 case 'w': 251 lastdump(ch); 252 exit(X_FINOK); /* do nothing else */ 253 254 default: 255 usage(); 256 } 257 argc -= optind; 258 argv += optind; 259 260 if (argc < 1) { 261 (void)fprintf(stderr, 262 "Must specify disk or image, or file list\n"); 263 exit(X_STARTUP); 264 } 265 266 267 /* 268 * determine if disk is a subdirectory, and setup appropriately 269 */ 270 getfstab(); /* /etc/fstab snarfed */ 271 disk = NULL; 272 mountpoint = NULL; 273 dirc = 0; 274 for (i = 0; i < argc; i++) { 275 struct stat sb; 276 277 if (lstat(argv[i], &sb) == -1) 278 quit("Cannot stat %s: %s\n", argv[i], strerror(errno)); 279 if (Fflag || S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) { 280 disk = argv[i]; 281 multicheck: 282 if (dirc != 0) 283 quit( 284 "Can't dump a disk or image at the same time as a file list\n"); 285 break; 286 } 287 if ((dt = fstabsearch(argv[i])) != NULL) { 288 disk = dt->fs_spec; 289 mountpoint = xstrdup(dt->fs_file); 290 goto multicheck; 291 } 292 if (statfs(argv[i], &fsbuf) == -1) 293 quit("Cannot statfs %s: %s\n", argv[i], 294 strerror(errno)); 295 disk = fsbuf.f_mntfromname; 296 if (strcmp(argv[i], fsbuf.f_mntonname) == 0) 297 goto multicheck; 298 if (mountpoint == NULL) { 299 mountpoint = xstrdup(fsbuf.f_mntonname); 300 if (uflag) { 301 msg("Ignoring u flag for subdir dump\n"); 302 uflag = 0; 303 } 304 if (level > '0') { 305 msg("Subdir dump is done at level 0\n"); 306 level = '0'; 307 } 308 msg("Dumping sub files/directories from %s\n", 309 mountpoint); 310 } else { 311 if (strcmp(mountpoint, fsbuf.f_mntonname) != 0) 312 quit("%s is not on %s\n", argv[i], mountpoint); 313 } 314 msg("Dumping file/directory %s\n", argv[i]); 315 dirc++; 316 } 317 if (mountpoint) 318 free(mountpoint); 319 320 if (dirc == 0) { 321 argv++; 322 if (argc != 1) { 323 (void)fprintf(stderr, "Excess arguments to dump:"); 324 while (--argc) 325 (void)fprintf(stderr, " %s", *argv++); 326 (void)fprintf(stderr, "\n"); 327 exit(X_STARTUP); 328 } 329 } 330 if (Tflag && uflag) { 331 (void)fprintf(stderr, 332 "You cannot use the T and u flags together.\n"); 333 exit(X_STARTUP); 334 } 335 if (strcmp(tape, "-") == 0) { 336 pipeout++; 337 tape = "standard output"; 338 } 339 340 if (blocksperfile) 341 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */ 342 else if (!unlimited) { 343 /* 344 * Determine how to default tape size and density 345 * 346 * density tape size 347 * 9-track 1600 bpi (160 bytes/.1") 2300 ft. 348 * 9-track 6250 bpi (625 bytes/.1") 2300 ft. 349 * cartridge 8000 bpi (100 bytes/.1") 1700 ft. 350 * (450*4 - slop) 351 */ 352 if (density == 0) 353 density = cartridge ? 100 : 160; 354 if (tsize == 0) 355 tsize = cartridge ? 1700L*120L : 2300L*120L; 356 } 357 358 if (strchr(tape, ':')) { 359 host = tape; 360 tape = strchr(host, ':'); 361 *tape++ = '\0'; 362 #ifdef RDUMP 363 if (rmthost(host) == 0) 364 exit(X_STARTUP); 365 #else 366 (void)fprintf(stderr, "remote dump not enabled\n"); 367 exit(X_STARTUP); 368 #endif 369 } 370 371 if (signal(SIGHUP, SIG_IGN) != SIG_IGN) 372 signal(SIGHUP, sig); 373 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN) 374 signal(SIGTRAP, sig); 375 if (signal(SIGFPE, SIG_IGN) != SIG_IGN) 376 signal(SIGFPE, sig); 377 if (signal(SIGBUS, SIG_IGN) != SIG_IGN) 378 signal(SIGBUS, sig); 379 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN) 380 signal(SIGSEGV, sig); 381 if (signal(SIGTERM, SIG_IGN) != SIG_IGN) 382 signal(SIGTERM, sig); 383 if (signal(SIGINT, interrupt) == SIG_IGN) 384 signal(SIGINT, SIG_IGN); 385 386 set_operators(); /* /etc/group snarfed */ 387 388 /* 389 * disk can be either the full special file name, or 390 * the file system name. 391 */ 392 mountpoint = NULL; 393 if ((dt = fstabsearch(disk)) != NULL) { 394 disk = rawname(dt->fs_spec); 395 mountpoint = dt->fs_file; 396 msg("Found %s on %s in %s\n", disk, mountpoint, _PATH_FSTAB); 397 } else if ((mntinfo = mntinfosearch(disk)) != NULL) { 398 disk = rawname(mntinfo->f_mntfromname); 399 mountpoint = mntinfo->f_mntonname; 400 msg("Found %s on %s in mount table\n", disk, mountpoint); 401 } 402 if (mountpoint != NULL) { 403 if (dirc != 0) 404 (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys), 405 "a subset of %s", mountpoint); 406 else 407 (void)strlcpy(spcl.c_filesys, mountpoint, 408 sizeof(spcl.c_filesys)); 409 } else if (Fflag) { 410 (void)strlcpy(spcl.c_filesys, "a file system image", 411 sizeof(spcl.c_filesys)); 412 } else { 413 (void)strlcpy(spcl.c_filesys, "an unlisted file system", 414 sizeof(spcl.c_filesys)); 415 } 416 (void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev)); 417 (void)strlcpy(spcl.c_label, labelstr, sizeof(spcl.c_label)); 418 (void)gethostname(spcl.c_host, sizeof(spcl.c_host)); 419 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0'; 420 421 if ((diskfd = open(disk, O_RDONLY)) < 0) { 422 msg("Cannot open %s\n", disk); 423 exit(X_STARTUP); 424 } 425 sync(); 426 427 needswap = fs_read_sblock(sblock_buf); 428 429 spcl.c_level = iswap32(level - '0'); 430 spcl.c_type = iswap32(TS_TAPE); 431 spcl.c_date = iswap32(spcl.c_date); 432 spcl.c_ddate = iswap32(spcl.c_ddate); 433 if (!Tflag) 434 getdumptime(); /* /etc/dumpdates snarfed */ 435 436 date = iswap32(spcl.c_date); 437 msg("Date of this level %c dump: %s", level, 438 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 439 date = iswap32(spcl.c_ddate); 440 msg("Date of last level %c dump: %s", lastlevel, 441 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date)); 442 msg("Dumping "); 443 if (dirc != 0) 444 msgtail("a subset of "); 445 msgtail("%s (%s) ", disk, spcl.c_filesys); 446 if (host) 447 msgtail("to %s on host %s\n", tape, host); 448 else 449 msgtail("to %s\n", tape); 450 msg("Label: %s\n", labelstr); 451 452 ufsib = fs_parametrize(); 453 454 dev_bshift = ffs(dev_bsize) - 1; 455 if (dev_bsize != (1 << dev_bshift)) 456 quit("dev_bsize (%ld) is not a power of 2", dev_bsize); 457 tp_bshift = ffs(TP_BSIZE) - 1; 458 if (TP_BSIZE != (1 << tp_bshift)) 459 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE); 460 maxino = fs_maxino(); 461 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE); 462 usedinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 463 dumpdirmap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 464 dumpinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char)); 465 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 466 467 nonodump = iswap32(spcl.c_level) < honorlevel; 468 469 initcache(readcache, readblksize); 470 471 (void)signal(SIGINFO, statussig); 472 473 msg("mapping (Pass I) [regular files]\n"); 474 anydirskipped = mapfiles(maxino, &tapesize, mountpoint, 475 (dirc ? argv : NULL)); 476 477 msg("mapping (Pass II) [directories]\n"); 478 while (anydirskipped) { 479 anydirskipped = mapdirs(maxino, &tapesize); 480 } 481 482 if (pipeout || unlimited) { 483 tapesize += 10; /* 10 trailer blocks */ 484 msg("estimated %ld tape blocks.\n", tapesize); 485 } else { 486 double fetapes; 487 488 if (blocksperfile) 489 fetapes = (double) tapesize / blocksperfile; 490 else if (cartridge) { 491 /* Estimate number of tapes, assuming streaming stops at 492 the end of each block written, and not in mid-block. 493 Assume no erroneous blocks; this can be compensated 494 for with an artificially low tape size. */ 495 fetapes = 496 ( (double) tapesize /* blocks */ 497 * TP_BSIZE /* bytes/block */ 498 * (1.0/density) /* 0.1" / byte */ 499 + 500 (double) tapesize /* blocks */ 501 * (1.0/ntrec) /* streaming-stops per block */ 502 * 15.48 /* 0.1" / streaming-stop */ 503 ) * (1.0 / tsize ); /* tape / 0.1" */ 504 } else { 505 /* Estimate number of tapes, for old fashioned 9-track 506 tape */ 507 int tenthsperirg = (density == 625) ? 3 : 7; 508 fetapes = 509 ( tapesize /* blocks */ 510 * TP_BSIZE /* bytes / block */ 511 * (1.0/density) /* 0.1" / byte */ 512 + 513 tapesize /* blocks */ 514 * (1.0/ntrec) /* IRG's / block */ 515 * tenthsperirg /* 0.1" / IRG */ 516 ) * (1.0 / tsize ); /* tape / 0.1" */ 517 } 518 etapes = fetapes; /* truncating assignment */ 519 etapes++; 520 /* count the dumped inodes map on each additional tape */ 521 tapesize += (etapes - 1) * 522 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1); 523 tapesize += etapes + 10; /* headers + 10 trailer blks */ 524 msg("estimated %ld tape blocks on %3.2f tape(s).\n", 525 tapesize, fetapes); 526 } 527 /* 528 * If the user only wants an estimate of the number of 529 * tapes, exit now. 530 */ 531 if (just_estimate) 532 exit(X_FINOK); 533 534 /* 535 * Allocate tape buffer. 536 */ 537 if (!alloctape()) 538 quit("can't allocate tape buffers - try a smaller blocking factor.\n"); 539 540 startnewtape(1); 541 (void)time((time_t *)&(tstart_writing)); 542 xferrate = 0; 543 dumpmap(usedinomap, TS_CLRI, maxino - 1); 544 545 msg("dumping (Pass III) [directories]\n"); 546 dirty = 0; /* XXX just to get gcc to shut up */ 547 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 548 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 549 dirty = *map++; 550 else 551 dirty >>= 1; 552 if ((dirty & 1) == 0) 553 continue; 554 /* 555 * Skip directory inodes deleted and maybe reallocated 556 */ 557 dp = getino(ino); 558 if ((dp->di_mode & IFMT) != IFDIR) 559 continue; 560 (void)dumpino(dp, ino); 561 } 562 563 msg("dumping (Pass IV) [regular files]\n"); 564 for (map = dumpinomap, ino = 1; ino < maxino; ino++) { 565 int mode; 566 567 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 568 dirty = *map++; 569 else 570 dirty >>= 1; 571 if ((dirty & 1) == 0) 572 continue; 573 /* 574 * Skip inodes deleted and reallocated as directories. 575 */ 576 dp = getino(ino); 577 mode = dp->di_mode & IFMT; 578 if (mode == IFDIR) 579 continue; 580 (void)dumpino(dp, ino); 581 } 582 583 spcl.c_type = iswap32(TS_END); 584 for (i = 0; i < ntrec; i++) 585 writeheader(maxino - 1); 586 if (pipeout) 587 msg("%d tape blocks\n",iswap32(spcl.c_tapea)); 588 else 589 msg("%d tape blocks on %d volume%s\n", 590 iswap32(spcl.c_tapea), iswap32(spcl.c_volume), 591 (iswap32(spcl.c_volume) == 1) ? "" : "s"); 592 tnow = do_stats(); 593 date = iswap32(spcl.c_date); 594 msg("Date of this level %c dump: %s", level, 595 spcl.c_date == 0 ? "the epoch\n" : ctime(&date)); 596 msg("Date this dump completed: %s", ctime(&tnow)); 597 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno); 598 putdumptime(); 599 trewind(0); 600 broadcast("DUMP IS DONE!\a\a\n"); 601 msg("DUMP IS DONE\n"); 602 Exit(X_FINOK); 603 /* NOTREACHED */ 604 exit(X_FINOK); /* XXX: to satisfy gcc */ 605 } 606 607 static void 608 usage(void) 609 { 610 const char *prog = getprogname(); 611 612 (void)fprintf(stderr, 613 "usage: %s [-0123456789aceFnStu] [-B records] [-b blocksize]\n" 614 " [-d density] [-f file] [-h level] [-k read-blocksize]\n" 615 " [-L label] [-l timeout] [-r read-cache] [-s feet] [-T date] files-to-dump\n" 616 " %s [-W | -w]\n", prog, prog); 617 exit(X_STARTUP); 618 } 619 620 /* 621 * Pick up a numeric argument. It must be nonnegative and in the given 622 * range (except that a vmax of 0 means unlimited). 623 */ 624 static long 625 numarg(char *meaning, long vmin, long vmax) 626 { 627 char *p; 628 long val; 629 630 val = strtol(optarg, &p, 10); 631 if (*p) 632 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg); 633 if (val < vmin || (vmax && val > vmax)) 634 errx(X_STARTUP, "%s must be between %ld and %ld", 635 meaning, vmin, vmax); 636 return (val); 637 } 638 639 void 640 sig(int signo) 641 { 642 643 switch(signo) { 644 case SIGALRM: 645 case SIGBUS: 646 case SIGFPE: 647 case SIGHUP: 648 case SIGTERM: 649 case SIGTRAP: 650 if (pipeout) 651 quit("Signal on pipe: cannot recover\n"); 652 msg("Rewriting attempted as response to signal %s.\n", sys_siglist[signo]); 653 (void)fflush(stderr); 654 (void)fflush(stdout); 655 close_rewind(); 656 exit(X_REWRITE); 657 /* NOTREACHED */ 658 case SIGSEGV: 659 msg("SIGSEGV: ABORTING!\n"); 660 (void)signal(SIGSEGV, SIG_DFL); 661 (void)kill(0, SIGSEGV); 662 /* NOTREACHED */ 663 } 664 } 665 666 char * 667 rawname(char *cp) 668 { 669 static char rawbuf[MAXPATHLEN]; 670 char *dp = strrchr(cp, '/'); 671 672 if (dp == NULL) 673 return (NULL); 674 *dp = '\0'; 675 (void)snprintf(rawbuf, sizeof rawbuf, "%s/r%s", cp, dp + 1); 676 *dp = '/'; 677 return (rawbuf); 678 } 679 680 /* 681 * obsolete -- 682 * Change set of key letters and ordered arguments into something 683 * getopt(3) will like. 684 */ 685 static void 686 obsolete(int *argcp, char **argvp[]) 687 { 688 int argc, flags; 689 char *ap, **argv, *flagsp, **nargv, *p; 690 691 /* Setup. */ 692 argv = *argvp; 693 argc = *argcp; 694 695 /* Return if no arguments or first argument has leading dash. */ 696 ap = argv[1]; 697 if (argc == 1 || *ap == '-') 698 return; 699 700 /* Allocate space for new arguments. */ 701 *argvp = nargv = xmalloc((argc + 1) * sizeof(char *)); 702 p = flagsp = xmalloc(strlen(ap) + 2); 703 704 *nargv++ = *argv; 705 argv += 2; 706 707 for (flags = 0; *ap; ++ap) { 708 switch (*ap) { 709 case 'B': 710 case 'b': 711 case 'd': 712 case 'f': 713 case 'h': 714 case 's': 715 case 'T': 716 if (*argv == NULL) { 717 warnx("option requires an argument -- %c", *ap); 718 usage(); 719 } 720 nargv[0] = xmalloc(strlen(*argv) + 2 + 1); 721 nargv[0][0] = '-'; 722 nargv[0][1] = *ap; 723 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */ 724 ++argv; 725 ++nargv; 726 break; 727 default: 728 if (!flags) { 729 *p++ = '-'; 730 flags = 1; 731 } 732 *p++ = *ap; 733 break; 734 } 735 } 736 737 /* Terminate flags. */ 738 if (flags) { 739 *p = '\0'; 740 *nargv++ = flagsp; 741 } 742 743 /* Copy remaining arguments. */ 744 while ((*nargv++ = *argv++) != NULL) 745 ; 746 747 /* Update argument count. */ 748 *argcp = nargv - *argvp - 1; 749 } 750 751 752 void * 753 xcalloc(size_t number, size_t size) 754 { 755 void *p; 756 757 p = calloc(number, size); 758 if (p == NULL) 759 quit("%s\n", strerror(errno)); 760 return (p); 761 } 762 763 void * 764 xmalloc(size_t size) 765 { 766 void *p; 767 768 p = malloc(size); 769 if (p == NULL) 770 quit("%s\n", strerror(errno)); 771 return (p); 772 } 773 774 char * 775 xstrdup(const char *str) 776 { 777 char *p; 778 779 p = strdup(str); 780 if (p == NULL) 781 quit("%s\n", strerror(errno)); 782 return (p); 783 } 784
Indexes created Tue Sep 23 14:10:03 GMT 2025