1 /* 2 * Copyright (c) 2002 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Andrew Brown. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $NetBSD: stat.c,v 1.33 2011/01/15 22:54:10 njoly Exp $ 30 * $OpenBSD: stat.c,v 1.14 2009/06/24 09:44:25 sobrado Exp $ 31 * $FreeBSD: head/usr.bin/stat/stat.c 265893 2014-05-11 18:49:18Z thomas $ 32 */ 33 34 #if HAVE_CONFIG_H 35 #include "config.h" 36 #else /* HAVE_CONFIG_H */ 37 #define HAVE_STRUCT_STAT_ST_FLAGS 1 38 #define HAVE_STRUCT_STAT_ST_GEN 1 39 #define HAVE_STRUCT_STAT_ST_BIRTHTIME 0 40 #define HAVE_STRUCT_STAT_ST_ATIM 1 41 #define HAVE_DEVNAME 1 42 #endif /* HAVE_CONFIG_H */ 43 44 #include <sys/param.h> 45 #include <sys/types.h> 46 #include <sys/stat.h> 47 #include <sys/mount.h> 48 49 #include <ctype.h> 50 #include <err.h> 51 #include <errno.h> 52 #include <grp.h> 53 #include <limits.h> 54 #include <paths.h> 55 #include <pwd.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <time.h> 60 #include <unistd.h> 61 62 #if HAVE_STRUCT_STAT_ST_FLAGS 63 #define DEF_F "%#Xf " 64 #define RAW_F "%f " 65 #define SHELL_F " st_flags=%f" 66 #else /* HAVE_STRUCT_STAT_ST_FLAGS */ 67 #define DEF_F 68 #define RAW_F 69 #define SHELL_F 70 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 71 72 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 73 #define DEF_B "\"%SB\" " 74 #define RAW_B "%B " 75 #define SHELL_B "st_birthtime=%B " 76 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 77 #define DEF_B 78 #define RAW_B 79 #define SHELL_B 80 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 81 82 #if HAVE_STRUCT_STAT_ST_ATIM 83 #define st_atimespec st_atim 84 #define st_ctimespec st_ctim 85 #define st_mtimespec st_mtim 86 #endif /* HAVE_STRUCT_STAT_ST_ATIM */ 87 88 #define DEF_FORMAT \ 89 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \ 90 "%k %b " DEF_F "%N" 91 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \ 92 "%k %b " RAW_F "%N" 93 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 94 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 95 #define SHELL_FORMAT \ 96 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 97 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 98 "st_atime=%a st_mtime=%m st_ctime=%c " SHELL_B \ 99 "st_blksize=%k st_blocks=%b" SHELL_F 100 #define LINUX_FORMAT \ 101 " File: \"%N\"%n" \ 102 " Size: %-11z FileType: %HT%n" \ 103 " Mode: (%OMp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 104 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 105 "Access: %Sa%n" \ 106 "Modify: %Sm%n" \ 107 "Change: %Sc" 108 109 #define TIME_FORMAT "%b %e %T %Y" 110 111 #define FLAG_POUND 0x01 112 #define FLAG_SPACE 0x02 113 #define FLAG_PLUS 0x04 114 #define FLAG_ZERO 0x08 115 #define FLAG_MINUS 0x10 116 117 /* 118 * These format characters must all be unique, except the magic one. 119 */ 120 #define FMT_MAGIC '%' 121 #define FMT_DOT '.' 122 123 #define SIMPLE_NEWLINE 'n' 124 #define SIMPLE_TAB 't' 125 #define SIMPLE_PERCENT '%' 126 #define SIMPLE_NUMBER '@' 127 128 #define FMT_POUND '#' 129 #define FMT_SPACE ' ' 130 #define FMT_PLUS '+' 131 #define FMT_ZERO '0' 132 #define FMT_MINUS '-' 133 134 #define FMT_DECIMAL 'D' 135 #define FMT_OCTAL 'O' 136 #define FMT_UNSIGNED 'U' 137 #define FMT_HEX 'X' 138 #define FMT_FLOAT 'F' 139 #define FMT_STRING 'S' 140 141 #define FMTF_DECIMAL 0x01 142 #define FMTF_OCTAL 0x02 143 #define FMTF_UNSIGNED 0x04 144 #define FMTF_HEX 0x08 145 #define FMTF_FLOAT 0x10 146 #define FMTF_STRING 0x20 147 148 #define HIGH_PIECE 'H' 149 #define MIDDLE_PIECE 'M' 150 #define LOW_PIECE 'L' 151 152 #define SHOW_realpath 'R' 153 #define SHOW_st_dev 'd' 154 #define SHOW_st_ino 'i' 155 #define SHOW_st_mode 'p' 156 #define SHOW_st_nlink 'l' 157 #define SHOW_st_uid 'u' 158 #define SHOW_st_gid 'g' 159 #define SHOW_st_rdev 'r' 160 #define SHOW_st_atime 'a' 161 #define SHOW_st_mtime 'm' 162 #define SHOW_st_ctime 'c' 163 #define SHOW_st_btime 'B' 164 #define SHOW_st_size 'z' 165 #define SHOW_st_blocks 'b' 166 #define SHOW_st_blksize 'k' 167 #define SHOW_st_flags 'f' 168 #define SHOW_st_gen 'v' 169 #define SHOW_symlink 'Y' 170 #define SHOW_filetype 'T' 171 #define SHOW_filename 'N' 172 #define SHOW_sizerdev 'Z' 173 174 static void usage(const char *) __dead2; 175 static void output(const struct stat *, const char *, 176 const char *, int, int); 177 static int format1(const struct stat *, /* stat info */ 178 const char *, /* the file name */ 179 const char *, int, /* the format string itself */ 180 char *, size_t, /* a place to put the output */ 181 int, int, int, int, /* the parsed format */ 182 int, int); 183 static int hex2byte(const char [2]); 184 #if HAVE_STRUCT_STAT_ST_FLAGS 185 static char *xfflagstostr(unsigned long); 186 #endif 187 188 static const char *timefmt; 189 static int linkfail; 190 191 #define addchar(s, c, nl) \ 192 do { \ 193 fputc((c), (s)); \ 194 (*nl) = ((c) == '\n'); \ 195 } while (0/*CONSTCOND*/) 196 197 int 198 main(int argc, char *argv[]) 199 { 200 struct stat st; 201 int ch, rc, errs, am_readlink; 202 int lsF, fmtchar, usestat, nfs_handle, fn, nonl, quiet; 203 const char *statfmt, *options, *synopsis; 204 char dname[sizeof _PATH_DEV + MNAMELEN] = _PATH_DEV; 205 fhandle_t fhnd; 206 const char *file; 207 208 am_readlink = 0; 209 lsF = 0; 210 fmtchar = '\0'; 211 usestat = 0; 212 nfs_handle = 0; 213 nonl = 0; 214 quiet = 0; 215 linkfail = 0; 216 statfmt = NULL; 217 timefmt = NULL; 218 219 if (strcmp(getprogname(), "readlink") == 0) { 220 am_readlink = 1; 221 options = "fn"; 222 synopsis = "[-fn] [file ...]"; 223 statfmt = "%Y"; 224 fmtchar = 'f'; 225 quiet = 1; 226 } else { 227 options = "f:FHlLnqrst:x"; 228 synopsis = "[-FLnq] [-f format | -l | -r | -s | -x] " 229 "[-t timefmt] [file|handle ...]"; 230 } 231 232 while ((ch = getopt(argc, argv, options)) != -1) 233 switch (ch) { 234 case 'F': 235 lsF = 1; 236 break; 237 case 'H': 238 nfs_handle = 1; 239 break; 240 case 'L': 241 usestat = 1; 242 break; 243 case 'n': 244 nonl = 1; 245 break; 246 case 'q': 247 quiet = 1; 248 break; 249 case 'f': 250 if (am_readlink) { 251 statfmt = "%R"; 252 break; 253 } 254 statfmt = optarg; 255 /* FALLTHROUGH */ 256 case 'l': 257 case 'r': 258 case 's': 259 case 'x': 260 if (fmtchar != 0) 261 errx(1, "can't use format '%c' with '%c'", 262 fmtchar, ch); 263 fmtchar = ch; 264 break; 265 case 't': 266 timefmt = optarg; 267 break; 268 default: 269 usage(synopsis); 270 } 271 272 argc -= optind; 273 argv += optind; 274 fn = 1; 275 276 if (fmtchar == '\0') { 277 if (lsF) 278 fmtchar = 'l'; 279 else { 280 fmtchar = 'f'; 281 statfmt = DEF_FORMAT; 282 } 283 } 284 285 if (lsF && fmtchar != 'l') 286 errx(1, "can't use format '%c' with -F", fmtchar); 287 288 switch (fmtchar) { 289 case 'f': 290 /* statfmt already set */ 291 break; 292 case 'l': 293 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 294 break; 295 case 'r': 296 statfmt = RAW_FORMAT; 297 break; 298 case 's': 299 statfmt = SHELL_FORMAT; 300 break; 301 case 'x': 302 statfmt = LINUX_FORMAT; 303 if (timefmt == NULL) 304 timefmt = "%c"; 305 break; 306 default: 307 usage(synopsis); 308 /*NOTREACHED*/ 309 } 310 311 if (timefmt == NULL) 312 timefmt = TIME_FORMAT; 313 314 errs = 0; 315 do { 316 if (argc == 0) { 317 if (fdevname_r(STDIN_FILENO, dname + 318 sizeof _PATH_DEV - 1, MNAMELEN) == 0) 319 file = dname; 320 else 321 file = "(stdin)"; 322 rc = fstat(STDIN_FILENO, &st); 323 } else { 324 int j; 325 326 file = argv[0]; 327 if (nfs_handle) { 328 rc = 0; 329 bzero(&fhnd, sizeof(fhnd)); 330 j = MIN(2 * sizeof(fhnd), strlen(file)); 331 if ((j & 1) != 0) { 332 rc = -1; 333 } else { 334 while (j) { 335 rc = hex2byte(&file[j - 2]); 336 if (rc == -1) 337 break; 338 ((char*) &fhnd)[j / 2 - 1] = rc; 339 j -= 2; 340 } 341 } 342 if (rc == -1) 343 errno = EINVAL; 344 else 345 rc = fhstat(&fhnd, &st); 346 347 } else if (usestat) { 348 /* 349 * Try stat() and if it fails, fall back to 350 * lstat() just in case we're examining a 351 * broken symlink. 352 */ 353 if ((rc = stat(file, &st)) == -1 && 354 errno == ENOENT && 355 (rc = lstat(file, &st)) == -1) 356 errno = ENOENT; 357 } 358 else 359 rc = lstat(file, &st); 360 } 361 362 if (rc == -1) { 363 errs = 1; 364 linkfail = 1; 365 if (!quiet) 366 warn("%s: stat", file); 367 } 368 else 369 output(&st, file, statfmt, fn, nonl); 370 371 argv++; 372 argc--; 373 fn++; 374 } while (argc > 0); 375 376 return (am_readlink ? linkfail : errs); 377 } 378 379 #if HAVE_STRUCT_STAT_ST_FLAGS 380 /* 381 * fflagstostr() wrapper that leaks only once 382 */ 383 static char * 384 xfflagstostr(unsigned long fflags) 385 { 386 static char *str = NULL; 387 388 if (str != NULL) 389 free(str); 390 391 str = fflagstostr(fflags); 392 if (str == NULL) 393 err(1, "fflagstostr"); 394 return (str); 395 } 396 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 397 398 static void 399 usage(const char *synopsis) 400 { 401 402 fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 403 exit(1); 404 } 405 406 /* 407 * Parses a format string. 408 */ 409 static void 410 output(const struct stat *st, const char *file, 411 const char *statfmt, int fn, int nonl) 412 { 413 int flags, size, prec, ofmt, hilo, what; 414 char buf[PATH_MAX + 4 + 1]; 415 const char *subfmt; 416 int nl, t, i; 417 418 nl = 1; 419 while (*statfmt != '\0') { 420 421 /* 422 * Non-format characters go straight out. 423 */ 424 if (*statfmt != FMT_MAGIC) { 425 addchar(stdout, *statfmt, &nl); 426 statfmt++; 427 continue; 428 } 429 430 /* 431 * The current format "substring" starts here, 432 * and then we skip the magic. 433 */ 434 subfmt = statfmt; 435 statfmt++; 436 437 /* 438 * Some simple one-character "formats". 439 */ 440 switch (*statfmt) { 441 case SIMPLE_NEWLINE: 442 addchar(stdout, '\n', &nl); 443 statfmt++; 444 continue; 445 case SIMPLE_TAB: 446 addchar(stdout, '\t', &nl); 447 statfmt++; 448 continue; 449 case SIMPLE_PERCENT: 450 addchar(stdout, '%', &nl); 451 statfmt++; 452 continue; 453 case SIMPLE_NUMBER: { 454 char num[12], *p; 455 456 snprintf(num, sizeof(num), "%d", fn); 457 for (p = &num[0]; *p; p++) 458 addchar(stdout, *p, &nl); 459 statfmt++; 460 continue; 461 } 462 } 463 464 /* 465 * This must be an actual format string. Format strings are 466 * similar to printf(3) formats up to a point, and are of 467 * the form: 468 * 469 * % required start of format 470 * [-# +0] opt. format characters 471 * size opt. field width 472 * . opt. decimal separator, followed by 473 * prec opt. precision 474 * fmt opt. output specifier (string, numeric, etc.) 475 * sub opt. sub field specifier (high, middle, low) 476 * datum required field specifier (size, mode, etc) 477 * 478 * Only the % and the datum selector are required. All data 479 * have reasonable default output forms. The "sub" specifier 480 * only applies to certain data (mode, dev, rdev, filetype). 481 * The symlink output defaults to STRING, yet will only emit 482 * the leading " -> " if STRING is explicitly specified. The 483 * sizerdev datum will generate rdev output for character or 484 * block devices, and size output for all others. 485 */ 486 flags = 0; 487 do { 488 if (*statfmt == FMT_POUND) 489 flags |= FLAG_POUND; 490 else if (*statfmt == FMT_SPACE) 491 flags |= FLAG_SPACE; 492 else if (*statfmt == FMT_PLUS) 493 flags |= FLAG_PLUS; 494 else if (*statfmt == FMT_ZERO) 495 flags |= FLAG_ZERO; 496 else if (*statfmt == FMT_MINUS) 497 flags |= FLAG_MINUS; 498 else 499 break; 500 statfmt++; 501 } while (1/*CONSTCOND*/); 502 503 size = -1; 504 if (isdigit((unsigned)*statfmt)) { 505 size = 0; 506 while (isdigit((unsigned)*statfmt)) { 507 size = (size * 10) + (*statfmt - '0'); 508 statfmt++; 509 if (size < 0) 510 goto badfmt; 511 } 512 } 513 514 prec = -1; 515 if (*statfmt == FMT_DOT) { 516 statfmt++; 517 518 prec = 0; 519 while (isdigit((unsigned)*statfmt)) { 520 prec = (prec * 10) + (*statfmt - '0'); 521 statfmt++; 522 if (prec < 0) 523 goto badfmt; 524 } 525 } 526 527 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 528 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 529 switch (*statfmt) { 530 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 531 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 532 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 533 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 534 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 535 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 536 default: 537 ofmt = 0; 538 break; 539 } 540 541 switch (*statfmt) { 542 fmtcase(hilo, HIGH_PIECE); 543 fmtcase(hilo, MIDDLE_PIECE); 544 fmtcase(hilo, LOW_PIECE); 545 default: 546 hilo = 0; 547 break; 548 } 549 550 switch (*statfmt) { 551 fmtcase(what, SHOW_realpath); 552 fmtcase(what, SHOW_st_dev); 553 fmtcase(what, SHOW_st_ino); 554 fmtcase(what, SHOW_st_mode); 555 fmtcase(what, SHOW_st_nlink); 556 fmtcase(what, SHOW_st_uid); 557 fmtcase(what, SHOW_st_gid); 558 fmtcase(what, SHOW_st_rdev); 559 fmtcase(what, SHOW_st_atime); 560 fmtcase(what, SHOW_st_mtime); 561 fmtcase(what, SHOW_st_ctime); 562 fmtcase(what, SHOW_st_btime); 563 fmtcase(what, SHOW_st_size); 564 fmtcase(what, SHOW_st_blocks); 565 fmtcase(what, SHOW_st_blksize); 566 fmtcase(what, SHOW_st_flags); 567 fmtcase(what, SHOW_st_gen); 568 fmtcase(what, SHOW_symlink); 569 fmtcase(what, SHOW_filetype); 570 fmtcase(what, SHOW_filename); 571 fmtcase(what, SHOW_sizerdev); 572 default: 573 goto badfmt; 574 } 575 #undef fmtcasef 576 #undef fmtcase 577 578 t = format1(st, 579 file, 580 subfmt, statfmt - subfmt, 581 buf, sizeof(buf), 582 flags, size, prec, ofmt, hilo, what); 583 584 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++) 585 addchar(stdout, buf[i], &nl); 586 587 continue; 588 589 badfmt: 590 errx(1, "%.*s: bad format", 591 (int)(statfmt - subfmt + 1), subfmt); 592 } 593 594 if (!nl && !nonl) 595 fputc('\n', stdout); 596 fflush(stdout); 597 } 598 599 /* 600 * Arranges output according to a single parsed format substring. 601 */ 602 static int 603 format1(const struct stat *st, 604 const char *file, 605 const char *fmt, int flen, 606 char *buf, size_t blen, 607 int flags, int size, int prec, int ofmt, 608 int hilo, int what) 609 { 610 u_int64_t data; 611 char *stmp, lfmt[24], tmp[20]; 612 const char *sdata; 613 char smode[12], sid[12], path[PATH_MAX + 4]; 614 struct passwd *pw; 615 struct group *gr; 616 const struct timespec *tsp; 617 struct timespec ts; 618 struct tm *tm; 619 int l, small, formats; 620 621 tsp = NULL; 622 formats = 0; 623 small = 0; 624 625 /* 626 * First, pick out the data and tweak it based on hilo or 627 * specified output format (symlink output only). 628 */ 629 switch (what) { 630 case SHOW_st_dev: 631 case SHOW_st_rdev: 632 small = (sizeof(st->st_dev) == 4); 633 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 634 #if HAVE_DEVNAME 635 sdata = (what == SHOW_st_dev) ? 636 devname(st->st_dev, S_IFBLK) : 637 devname(st->st_rdev, 638 S_ISCHR(st->st_mode) ? S_IFCHR : 639 S_ISBLK(st->st_mode) ? S_IFBLK : 640 0U); 641 if (sdata == NULL) 642 sdata = "???"; 643 #endif /* HAVE_DEVNAME */ 644 if (hilo == HIGH_PIECE) { 645 data = major(data); 646 hilo = 0; 647 } 648 else if (hilo == LOW_PIECE) { 649 data = minor((unsigned)data); 650 hilo = 0; 651 } 652 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 653 #if HAVE_DEVNAME 654 FMTF_STRING; 655 #else /* HAVE_DEVNAME */ 656 0; 657 #endif /* HAVE_DEVNAME */ 658 if (ofmt == 0) 659 ofmt = FMTF_UNSIGNED; 660 break; 661 case SHOW_st_ino: 662 small = (sizeof(st->st_ino) == 4); 663 data = st->st_ino; 664 sdata = NULL; 665 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 666 if (ofmt == 0) 667 ofmt = FMTF_UNSIGNED; 668 break; 669 case SHOW_st_mode: 670 small = (sizeof(st->st_mode) == 4); 671 data = st->st_mode; 672 strmode(st->st_mode, smode); 673 stmp = smode; 674 l = strlen(stmp); 675 if (stmp[l - 1] == ' ') 676 stmp[--l] = '\0'; 677 if (hilo == HIGH_PIECE) { 678 data >>= 12; 679 stmp += 1; 680 stmp[3] = '\0'; 681 hilo = 0; 682 } 683 else if (hilo == MIDDLE_PIECE) { 684 data = (data >> 9) & 07; 685 stmp += 4; 686 stmp[3] = '\0'; 687 hilo = 0; 688 } 689 else if (hilo == LOW_PIECE) { 690 data &= 0777; 691 stmp += 7; 692 stmp[3] = '\0'; 693 hilo = 0; 694 } 695 sdata = stmp; 696 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 697 FMTF_STRING; 698 if (ofmt == 0) 699 ofmt = FMTF_OCTAL; 700 break; 701 case SHOW_st_nlink: 702 small = (sizeof(st->st_dev) == 4); 703 data = st->st_nlink; 704 sdata = NULL; 705 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 706 if (ofmt == 0) 707 ofmt = FMTF_UNSIGNED; 708 break; 709 case SHOW_st_uid: 710 small = (sizeof(st->st_uid) == 4); 711 data = st->st_uid; 712 if ((pw = getpwuid(st->st_uid)) != NULL) 713 sdata = pw->pw_name; 714 else { 715 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 716 sdata = sid; 717 } 718 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 719 FMTF_STRING; 720 if (ofmt == 0) 721 ofmt = FMTF_UNSIGNED; 722 break; 723 case SHOW_st_gid: 724 small = (sizeof(st->st_gid) == 4); 725 data = st->st_gid; 726 if ((gr = getgrgid(st->st_gid)) != NULL) 727 sdata = gr->gr_name; 728 else { 729 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 730 sdata = sid; 731 } 732 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 733 FMTF_STRING; 734 if (ofmt == 0) 735 ofmt = FMTF_UNSIGNED; 736 break; 737 case SHOW_st_atime: 738 tsp = &st->st_atimespec; 739 /* FALLTHROUGH */ 740 case SHOW_st_mtime: 741 if (tsp == NULL) 742 tsp = &st->st_mtimespec; 743 /* FALLTHROUGH */ 744 case SHOW_st_ctime: 745 if (tsp == NULL) 746 tsp = &st->st_ctimespec; 747 /* FALLTHROUGH */ 748 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 749 case SHOW_st_btime: 750 if (tsp == NULL) 751 tsp = &st->st_birthtimespec; 752 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 753 ts = *tsp; /* copy so we can muck with it */ 754 small = (sizeof(ts.tv_sec) == 4); 755 data = ts.tv_sec; 756 tm = localtime(&ts.tv_sec); 757 if (tm == NULL) { 758 ts.tv_sec = 0; 759 tm = localtime(&ts.tv_sec); 760 } 761 strftime(path, sizeof(path), timefmt, tm); 762 sdata = path; 763 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 764 FMTF_FLOAT | FMTF_STRING; 765 if (ofmt == 0) 766 ofmt = FMTF_DECIMAL; 767 break; 768 case SHOW_st_size: 769 small = (sizeof(st->st_size) == 4); 770 data = st->st_size; 771 sdata = NULL; 772 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 773 if (ofmt == 0) 774 ofmt = FMTF_UNSIGNED; 775 break; 776 case SHOW_st_blocks: 777 small = (sizeof(st->st_blocks) == 4); 778 data = st->st_blocks; 779 sdata = NULL; 780 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 781 if (ofmt == 0) 782 ofmt = FMTF_UNSIGNED; 783 break; 784 case SHOW_st_blksize: 785 small = (sizeof(st->st_blksize) == 4); 786 data = st->st_blksize; 787 sdata = NULL; 788 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 789 if (ofmt == 0) 790 ofmt = FMTF_UNSIGNED; 791 break; 792 #if HAVE_STRUCT_STAT_ST_FLAGS 793 case SHOW_st_flags: 794 small = (sizeof(st->st_flags) == 4); 795 data = st->st_flags; 796 sdata = xfflagstostr(st->st_flags); 797 if (*sdata == '\0') 798 sdata = "-"; 799 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 800 FMTF_STRING; 801 if (ofmt == 0) 802 ofmt = FMTF_UNSIGNED; 803 break; 804 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 805 #if HAVE_STRUCT_STAT_ST_GEN 806 case SHOW_st_gen: 807 small = (sizeof(st->st_gen) == 4); 808 data = st->st_gen; 809 sdata = NULL; 810 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 811 if (ofmt == 0) 812 ofmt = FMTF_UNSIGNED; 813 break; 814 #endif /* HAVE_STRUCT_STAT_ST_GEN */ 815 case SHOW_realpath: 816 small = 0; 817 data = 0; 818 if (file == NULL) { 819 strlcpy(path, "(stdin)", sizeof(path)); 820 sdata = path; 821 } else { 822 snprintf(path, sizeof(path), " -> "); 823 if (realpath(file, path + 4) == NULL) { 824 linkfail = 1; 825 l = 0; 826 path[0] = '\0'; 827 } 828 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 829 } 830 831 formats = FMTF_STRING; 832 if (ofmt == 0) 833 ofmt = FMTF_STRING; 834 break; 835 case SHOW_symlink: 836 small = 0; 837 data = 0; 838 if (S_ISLNK(st->st_mode)) { 839 snprintf(path, sizeof(path), " -> "); 840 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 841 if (l == -1) { 842 linkfail = 1; 843 l = 0; 844 path[0] = '\0'; 845 } 846 path[l + 4] = '\0'; 847 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 848 } 849 else { 850 linkfail = 1; 851 sdata = ""; 852 } 853 formats = FMTF_STRING; 854 if (ofmt == 0) 855 ofmt = FMTF_STRING; 856 break; 857 case SHOW_filetype: 858 small = 0; 859 data = 0; 860 sdata = ""; 861 if (hilo == 0 || hilo == LOW_PIECE) { 862 switch (st->st_mode & S_IFMT) { 863 case S_IFIFO: sdata = "|"; break; 864 case S_IFDIR: sdata = "/"; break; 865 case S_IFREG: 866 if (st->st_mode & 867 (S_IXUSR | S_IXGRP | S_IXOTH)) 868 sdata = "*"; 869 break; 870 case S_IFLNK: sdata = "@"; break; 871 case S_IFSOCK: sdata = "="; break; 872 #ifdef S_IFWHT 873 case S_IFWHT: sdata = "%"; break; 874 #endif /* S_IFWHT */ 875 #ifdef S_IFDOOR 876 case S_IFDOOR: sdata = ">"; break; 877 #endif /* S_IFDOOR */ 878 } 879 hilo = 0; 880 } 881 else if (hilo == HIGH_PIECE) { 882 switch (st->st_mode & S_IFMT) { 883 case S_IFIFO: sdata = "Fifo File"; break; 884 case S_IFCHR: sdata = "Character Device"; break; 885 case S_IFDIR: sdata = "Directory"; break; 886 case S_IFBLK: sdata = "Block Device"; break; 887 case S_IFREG: sdata = "Regular File"; break; 888 case S_IFLNK: sdata = "Symbolic Link"; break; 889 case S_IFSOCK: sdata = "Socket"; break; 890 #ifdef S_IFWHT 891 case S_IFWHT: sdata = "Whiteout File"; break; 892 #endif /* S_IFWHT */ 893 #ifdef S_IFDOOR 894 case S_IFDOOR: sdata = "Door"; break; 895 #endif /* S_IFDOOR */ 896 default: sdata = "???"; break; 897 } 898 hilo = 0; 899 } 900 formats = FMTF_STRING; 901 if (ofmt == 0) 902 ofmt = FMTF_STRING; 903 break; 904 case SHOW_filename: 905 small = 0; 906 data = 0; 907 strlcpy(path, file, sizeof(path)); 908 sdata = path; 909 formats = FMTF_STRING; 910 if (ofmt == 0) 911 ofmt = FMTF_STRING; 912 break; 913 case SHOW_sizerdev: 914 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 915 char majdev[20], mindev[20]; 916 int l1, l2; 917 918 l1 = format1(st, 919 file, 920 fmt, flen, 921 majdev, sizeof(majdev), 922 flags, size, prec, 923 ofmt, HIGH_PIECE, SHOW_st_rdev); 924 l2 = format1(st, 925 file, 926 fmt, flen, 927 mindev, sizeof(mindev), 928 flags, size, prec, 929 ofmt, LOW_PIECE, SHOW_st_rdev); 930 return (snprintf(buf, blen, "%.*s,%.*s", 931 l1, majdev, l2, mindev)); 932 } 933 else { 934 return (format1(st, 935 file, 936 fmt, flen, 937 buf, blen, 938 flags, size, prec, 939 ofmt, 0, SHOW_st_size)); 940 } 941 /*NOTREACHED*/ 942 default: 943 errx(1, "%.*s: bad format", (int)flen, fmt); 944 } 945 946 /* 947 * If a subdatum was specified but not supported, or an output 948 * format was selected that is not supported, that's an error. 949 */ 950 if (hilo != 0 || (ofmt & formats) == 0) 951 errx(1, "%.*s: bad format", (int)flen, fmt); 952 953 /* 954 * Assemble the format string for passing to printf(3). 955 */ 956 lfmt[0] = '\0'; 957 strcat(lfmt, "%"); 958 if (flags & FLAG_POUND) 959 strcat(lfmt, "#"); 960 if (flags & FLAG_SPACE) 961 strcat(lfmt, " "); 962 if (flags & FLAG_PLUS) 963 strcat(lfmt, "+"); 964 if (flags & FLAG_MINUS) 965 strcat(lfmt, "-"); 966 if (flags & FLAG_ZERO) 967 strcat(lfmt, "0"); 968 969 /* 970 * Only the timespecs support the FLOAT output format, and that 971 * requires work that differs from the other formats. 972 */ 973 if (ofmt == FMTF_FLOAT) { 974 /* 975 * Nothing after the decimal point, so just print seconds. 976 */ 977 if (prec == 0) { 978 if (size != -1) { 979 snprintf(tmp, sizeof(tmp), "%d", size); 980 strcat(lfmt, tmp); 981 } 982 strcat(lfmt, "lld"); 983 return (snprintf(buf, blen, lfmt, 984 (long long)ts.tv_sec)); 985 } 986 987 /* 988 * Unspecified precision gets all the precision we have: 989 * 9 digits. 990 */ 991 if (prec == -1) 992 prec = 9; 993 994 /* 995 * Adjust the size for the decimal point and the digits 996 * that will follow. 997 */ 998 size -= prec + 1; 999 1000 /* 1001 * Any leftover size that's legitimate will be used. 1002 */ 1003 if (size > 0) { 1004 snprintf(tmp, sizeof(tmp), "%d", size); 1005 strcat(lfmt, tmp); 1006 } 1007 /* Seconds: time_t cast to long long. */ 1008 strcat(lfmt, "lld"); 1009 1010 /* 1011 * The stuff after the decimal point always needs zero 1012 * filling. 1013 */ 1014 strcat(lfmt, ".%0"); 1015 1016 /* 1017 * We can "print" at most nine digits of precision. The 1018 * rest we will pad on at the end. 1019 * 1020 * Nanoseconds: long. 1021 */ 1022 snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec); 1023 strcat(lfmt, tmp); 1024 1025 /* 1026 * For precision of less that nine digits, trim off the 1027 * less significant figures. 1028 */ 1029 for (; prec < 9; prec++) 1030 ts.tv_nsec /= 10; 1031 1032 /* 1033 * Use the format, and then tack on any zeroes that 1034 * might be required to make up the requested precision. 1035 */ 1036 l = snprintf(buf, blen, lfmt, (long long)ts.tv_sec, ts.tv_nsec); 1037 for (; prec > 9 && l < (int)blen; prec--, l++) 1038 strcat(buf, "0"); 1039 return (l); 1040 } 1041 1042 /* 1043 * Add on size and precision, if specified, to the format. 1044 */ 1045 if (size != -1) { 1046 snprintf(tmp, sizeof(tmp), "%d", size); 1047 strcat(lfmt, tmp); 1048 } 1049 if (prec != -1) { 1050 snprintf(tmp, sizeof(tmp), ".%d", prec); 1051 strcat(lfmt, tmp); 1052 } 1053 1054 /* 1055 * String output uses the temporary sdata. 1056 */ 1057 if (ofmt == FMTF_STRING) { 1058 if (sdata == NULL) 1059 errx(1, "%.*s: bad format", (int)flen, fmt); 1060 strcat(lfmt, "s"); 1061 return (snprintf(buf, blen, lfmt, sdata)); 1062 } 1063 1064 /* 1065 * Ensure that sign extension does not cause bad looking output 1066 * for some forms. 1067 */ 1068 if (small && ofmt != FMTF_DECIMAL) 1069 data = (u_int32_t)data; 1070 1071 /* 1072 * The four "numeric" output forms. 1073 */ 1074 strcat(lfmt, "ll"); 1075 switch (ofmt) { 1076 case FMTF_DECIMAL: strcat(lfmt, "d"); break; 1077 case FMTF_OCTAL: strcat(lfmt, "o"); break; 1078 case FMTF_UNSIGNED: strcat(lfmt, "u"); break; 1079 case FMTF_HEX: strcat(lfmt, "x"); break; 1080 } 1081 1082 return (snprintf(buf, blen, lfmt, data)); 1083 } 1084 1085 1086 #define hex2nibble(c) (c <= '9' ? c - '0' : toupper(c) - 'A' + 10) 1087 static int 1088 hex2byte(const char c[2]) { 1089 if (!(ishexnumber(c[0]) && ishexnumber(c[1]))) 1090 return -1; 1091 return (hex2nibble(c[0]) << 4) + hex2nibble(c[1]); 1092 } 1093