stat.c revision 1.41
1 /* $NetBSD: stat.c,v 1.41 2017/09/20 17:45:25 kre Exp $ */ 2 3 /* 4 * Copyright (c) 2002-2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Brown. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #if HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 /* config checked libc, we need the prototype as well */ 35 #undef HAVE_DEVNAME 36 #endif 37 38 #include <sys/cdefs.h> 39 #if !defined(lint) 40 __RCSID("$NetBSD: stat.c,v 1.41 2017/09/20 17:45:25 kre Exp $"); 41 #endif 42 43 #if ! HAVE_NBTOOL_CONFIG_H 44 #define HAVE_STRUCT_STAT_ST_FLAGS 1 45 #define HAVE_STRUCT_STAT_ST_GEN 1 46 #define HAVE_STRUCT_STAT_ST_BIRTHTIME 1 47 #define HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 1 48 #define HAVE_STRUCT_STAT_ST_MTIMENSEC 1 49 #define HAVE_DEVNAME 1 50 #endif /* HAVE_NBTOOL_CONFIG_H */ 51 52 #include <sys/types.h> 53 #include <sys/stat.h> 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <grp.h> 59 #include <limits.h> 60 #include <pwd.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <time.h> 65 #include <unistd.h> 66 #include <vis.h> 67 68 #if HAVE_STRUCT_STAT_ST_FLAGS 69 #define DEF_F "%#Xf " 70 #define RAW_F "%f " 71 #define SHELL_F " st_flags=%f" 72 #else /* HAVE_STRUCT_STAT_ST_FLAGS */ 73 #define DEF_F 74 #define RAW_F 75 #define SHELL_F 76 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 77 78 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 79 #define DEF_B "\"%SB\" " 80 #define RAW_B "%B " 81 #define SHELL_B "st_birthtime=%SB " 82 #define LINUX_B "%n Birth: %SB" 83 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 84 #define DEF_B 85 #define RAW_B 86 #define SHELL_B 87 #define LINUX_B 88 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 89 90 #if HAVE_STRUCT_STAT_ST_ATIM 91 #define st_atimespec st_atim 92 #define st_ctimespec st_ctim 93 #define st_mtimespec st_mtim 94 #endif /* HAVE_STRUCT_STAT_ST_ATIM */ 95 96 #define DEF_FORMAT \ 97 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \ 98 "%k %b " DEF_F "%N" 99 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \ 100 "%k %b " RAW_F "%N" 101 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 102 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 103 #define SHELL_FORMAT \ 104 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 105 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 106 "st_atime=%Sa st_mtime=%Sm st_ctime=%Sc " SHELL_B \ 107 "st_blksize=%k st_blocks=%b" SHELL_F 108 #define LINUX_FORMAT \ 109 " File: \"%N\"%n" \ 110 " Size: %-11z Blocks: %-11b IO Block: %-11k %HT%n" \ 111 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 112 " Mode: (%Mp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 113 "Access: %Sa%n" \ 114 "Modify: %Sm%n" \ 115 "Change: %Sc" \ 116 LINUX_B 117 118 #define TIME_FORMAT "%b %e %T %Y" 119 120 #define FLAG_POUND 0x01 121 #define FLAG_SPACE 0x02 122 #define FLAG_PLUS 0x04 123 #define FLAG_ZERO 0x08 124 #define FLAG_MINUS 0x10 125 126 /* 127 * These format characters must all be unique, except the magic one. 128 */ 129 #define FMT_MAGIC '%' 130 #define FMT_DOT '.' 131 132 #define SIMPLE_NEWLINE 'n' 133 #define SIMPLE_TAB 't' 134 #define SIMPLE_PERCENT '%' 135 #define SIMPLE_NUMBER '@' 136 137 #define FMT_POUND '#' 138 #define FMT_SPACE ' ' 139 #define FMT_PLUS '+' 140 #define FMT_ZERO '0' 141 #define FMT_MINUS '-' 142 143 #define FMT_DECIMAL 'D' 144 #define FMT_OCTAL 'O' 145 #define FMT_UNSIGNED 'U' 146 #define FMT_HEX 'X' 147 #define FMT_FLOAT 'F' 148 #define FMT_STRING 'S' 149 150 #define FMTF_DECIMAL 0x01 151 #define FMTF_OCTAL 0x02 152 #define FMTF_UNSIGNED 0x04 153 #define FMTF_HEX 0x08 154 #define FMTF_FLOAT 0x10 155 #define FMTF_STRING 0x20 156 157 #define HIGH_PIECE 'H' 158 #define MIDDLE_PIECE 'M' 159 #define LOW_PIECE 'L' 160 161 #define SHOW_realpath 'R' 162 #define SHOW_st_dev 'd' 163 #define SHOW_st_ino 'i' 164 #define SHOW_st_mode 'p' 165 #define SHOW_st_nlink 'l' 166 #define SHOW_st_uid 'u' 167 #define SHOW_st_gid 'g' 168 #define SHOW_st_rdev 'r' 169 #define SHOW_st_atime 'a' 170 #define SHOW_st_mtime 'm' 171 #define SHOW_st_ctime 'c' 172 #define SHOW_st_btime 'B' 173 #define SHOW_st_size 'z' 174 #define SHOW_st_blocks 'b' 175 #define SHOW_st_blksize 'k' 176 #define SHOW_st_flags 'f' 177 #define SHOW_st_gen 'v' 178 #define SHOW_symlink 'Y' 179 #define SHOW_filetype 'T' 180 #define SHOW_filename 'N' 181 #define SHOW_sizerdev 'Z' 182 183 static void usage(const char *) __dead; 184 static void output(const struct stat *, const char *, 185 const char *, int, int, int); 186 static int format1(const struct stat *, /* stat info */ 187 const char *, /* the file name */ 188 const char *, int, /* the format string itself */ 189 char *, size_t, /* a place to put the output */ 190 int, int, int, int, /* the parsed format */ 191 int, int, int); 192 193 static const char *timefmt; 194 static int linkfail; 195 196 #define addchar(s, c, nl) \ 197 do { \ 198 (void)fputc((c), (s)); \ 199 (*nl) = ((c) == '\n'); \ 200 } while (0/*CONSTCOND*/) 201 202 int 203 main(int argc, char *argv[]) 204 { 205 struct stat st; 206 int ch, rc, errs, am_readlink; 207 int lsF, fmtchar, usestat, fn, nonl, quiet; 208 const char *statfmt, *options, *synopsis; 209 210 am_readlink = 0; 211 lsF = 0; 212 fmtchar = '\0'; 213 usestat = 0; 214 nonl = 0; 215 quiet = 0; 216 linkfail = 0; 217 statfmt = NULL; 218 timefmt = NULL; 219 220 setprogname(argv[0]); 221 222 if (strcmp(getprogname(), "readlink") == 0) { 223 am_readlink = 1; 224 options = "fnqsv"; 225 synopsis = "[-fnqsv] [file ...]"; 226 statfmt = "%Y"; 227 fmtchar = 'f'; 228 quiet = 1; 229 } else { 230 options = "f:FlLnqrst:x"; 231 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 232 } 233 234 while ((ch = getopt(argc, argv, options)) != -1) 235 switch (ch) { 236 case 'F': 237 lsF = 1; 238 break; 239 case 'L': 240 usestat = 1; 241 break; 242 case 'n': 243 nonl = 1; 244 break; 245 case 'q': 246 quiet = 1; 247 break; 248 case 'f': 249 if (am_readlink) { 250 statfmt = "%R"; 251 break; 252 } 253 statfmt = optarg; 254 /* FALLTHROUGH */ 255 case 'l': 256 case 'r': 257 case 's': 258 if (am_readlink) { 259 quiet = 1; 260 break; 261 } 262 /*FALLTHROUGH*/ 263 case 'x': 264 if (fmtchar != 0) 265 errx(1, "can't use format '%c' with '%c'", 266 fmtchar, ch); 267 fmtchar = ch; 268 break; 269 case 't': 270 timefmt = optarg; 271 break; 272 case 'v': 273 quiet = 0; 274 break; 275 default: 276 usage(synopsis); 277 } 278 279 argc -= optind; 280 argv += optind; 281 fn = 1; 282 283 if (fmtchar == '\0') { 284 if (lsF) 285 fmtchar = 'l'; 286 else { 287 fmtchar = 'f'; 288 statfmt = DEF_FORMAT; 289 } 290 } 291 292 if (lsF && fmtchar != 'l') 293 errx(1, "can't use format '%c' with -F", fmtchar); 294 295 switch (fmtchar) { 296 case 'f': 297 /* statfmt already set */ 298 break; 299 case 'l': 300 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 301 break; 302 case 'r': 303 statfmt = RAW_FORMAT; 304 break; 305 case 's': 306 statfmt = SHELL_FORMAT; 307 if (timefmt == NULL) 308 timefmt = "%s"; 309 break; 310 case 'x': 311 statfmt = LINUX_FORMAT; 312 if (timefmt == NULL) 313 timefmt = "%Y-%m-%d %H:%M:%S.%f %z"; 314 break; 315 default: 316 usage(synopsis); 317 /*NOTREACHED*/ 318 } 319 320 if (timefmt == NULL) 321 timefmt = TIME_FORMAT; 322 323 errs = 0; 324 do { 325 if (argc == 0) 326 rc = fstat(STDIN_FILENO, &st); 327 else if (usestat) { 328 /* 329 * Try stat() and if it fails, fall back to 330 * lstat() just in case we're examining a 331 * broken symlink. 332 */ 333 if ((rc = stat(argv[0], &st)) == -1 && 334 errno == ENOENT && 335 (rc = lstat(argv[0], &st)) == -1) 336 errno = ENOENT; 337 } 338 else 339 rc = lstat(argv[0], &st); 340 341 if (rc == -1) { 342 errs = 1; 343 linkfail = 1; 344 if (!quiet) 345 warn("%s: %s", 346 argc == 0 ? "(stdin)" : argv[0], 347 usestat ? "stat" : "lstat"); 348 } 349 else 350 output(&st, argv[0], statfmt, fn, nonl, quiet); 351 352 argv++; 353 argc--; 354 fn++; 355 } while (argc > 0); 356 357 return (am_readlink ? linkfail : errs); 358 } 359 360 static void 361 usage(const char *synopsis) 362 { 363 364 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 365 exit(1); 366 } 367 368 /* 369 * Parses a format string. 370 */ 371 static void 372 output(const struct stat *st, const char *file, 373 const char *statfmt, int fn, int nonl, int quiet) 374 { 375 int flags, size, prec, ofmt, hilo, what; 376 /* 377 * buf size is enough for an item of length PATH_MAX, 378 * multiplied by 4 for vis encoding, plus 4 for symlink 379 * " -> " prefix, plus 1 for \0 terminator. 380 */ 381 char buf[PATH_MAX * 4 + 4 + 1]; 382 const char *subfmt; 383 int nl, t, i; 384 385 nl = 1; 386 while (*statfmt != '\0') { 387 388 /* 389 * Non-format characters go straight out. 390 */ 391 if (*statfmt != FMT_MAGIC) { 392 addchar(stdout, *statfmt, &nl); 393 statfmt++; 394 continue; 395 } 396 397 /* 398 * The current format "substring" starts here, 399 * and then we skip the magic. 400 */ 401 subfmt = statfmt; 402 statfmt++; 403 404 /* 405 * Some simple one-character "formats". 406 */ 407 switch (*statfmt) { 408 case SIMPLE_NEWLINE: 409 addchar(stdout, '\n', &nl); 410 statfmt++; 411 continue; 412 case SIMPLE_TAB: 413 addchar(stdout, '\t', &nl); 414 statfmt++; 415 continue; 416 case SIMPLE_PERCENT: 417 addchar(stdout, '%', &nl); 418 statfmt++; 419 continue; 420 case SIMPLE_NUMBER: { 421 char num[12], *p; 422 423 snprintf(num, sizeof(num), "%d", fn); 424 for (p = &num[0]; *p; p++) 425 addchar(stdout, *p, &nl); 426 statfmt++; 427 continue; 428 } 429 } 430 431 /* 432 * This must be an actual format string. Format strings are 433 * similar to printf(3) formats up to a point, and are of 434 * the form: 435 * 436 * % required start of format 437 * [-# +0] opt. format characters 438 * size opt. field width 439 * . opt. decimal separator, followed by 440 * prec opt. precision 441 * fmt opt. output specifier (string, numeric, etc.) 442 * sub opt. sub field specifier (high, middle, low) 443 * datum required field specifier (size, mode, etc) 444 * 445 * Only the % and the datum selector are required. All data 446 * have reasonable default output forms. The "sub" specifier 447 * only applies to certain data (mode, dev, rdev, filetype). 448 * The symlink output defaults to STRING, yet will only emit 449 * the leading " -> " if STRING is explicitly specified. The 450 * sizerdev datum will generate rdev output for character or 451 * block devices, and size output for all others. 452 * For STRING output, the # format requests vis encoding. 453 */ 454 flags = 0; 455 do { 456 if (*statfmt == FMT_POUND) 457 flags |= FLAG_POUND; 458 else if (*statfmt == FMT_SPACE) 459 flags |= FLAG_SPACE; 460 else if (*statfmt == FMT_PLUS) 461 flags |= FLAG_PLUS; 462 else if (*statfmt == FMT_ZERO) 463 flags |= FLAG_ZERO; 464 else if (*statfmt == FMT_MINUS) 465 flags |= FLAG_MINUS; 466 else 467 break; 468 statfmt++; 469 } while (1/*CONSTCOND*/); 470 471 size = -1; 472 if (isdigit((unsigned)*statfmt)) { 473 size = 0; 474 while (isdigit((unsigned)*statfmt)) { 475 size = (size * 10) + (*statfmt - '0'); 476 statfmt++; 477 if (size < 0) 478 goto badfmt; 479 } 480 } 481 482 prec = -1; 483 if (*statfmt == FMT_DOT) { 484 statfmt++; 485 486 prec = 0; 487 while (isdigit((unsigned)*statfmt)) { 488 prec = (prec * 10) + (*statfmt - '0'); 489 statfmt++; 490 if (prec < 0) 491 goto badfmt; 492 } 493 } 494 495 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 496 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 497 switch (*statfmt) { 498 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 499 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 500 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 501 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 502 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 503 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 504 default: 505 ofmt = 0; 506 break; 507 } 508 509 switch (*statfmt) { 510 fmtcase(hilo, HIGH_PIECE); 511 fmtcase(hilo, MIDDLE_PIECE); 512 fmtcase(hilo, LOW_PIECE); 513 default: 514 hilo = 0; 515 break; 516 } 517 518 switch (*statfmt) { 519 fmtcase(what, SHOW_realpath); 520 fmtcase(what, SHOW_st_dev); 521 fmtcase(what, SHOW_st_ino); 522 fmtcase(what, SHOW_st_mode); 523 fmtcase(what, SHOW_st_nlink); 524 fmtcase(what, SHOW_st_uid); 525 fmtcase(what, SHOW_st_gid); 526 fmtcase(what, SHOW_st_rdev); 527 fmtcase(what, SHOW_st_atime); 528 fmtcase(what, SHOW_st_mtime); 529 fmtcase(what, SHOW_st_ctime); 530 fmtcase(what, SHOW_st_btime); 531 fmtcase(what, SHOW_st_size); 532 fmtcase(what, SHOW_st_blocks); 533 fmtcase(what, SHOW_st_blksize); 534 fmtcase(what, SHOW_st_flags); 535 fmtcase(what, SHOW_st_gen); 536 fmtcase(what, SHOW_symlink); 537 fmtcase(what, SHOW_filetype); 538 fmtcase(what, SHOW_filename); 539 fmtcase(what, SHOW_sizerdev); 540 default: 541 goto badfmt; 542 } 543 #undef fmtcasef 544 #undef fmtcase 545 546 t = format1(st, 547 file, 548 subfmt, statfmt - subfmt, 549 buf, sizeof(buf), 550 flags, size, prec, ofmt, hilo, what, quiet); 551 552 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++) 553 addchar(stdout, buf[i], &nl); 554 555 continue; 556 557 badfmt: 558 errx(1, "%.*s: bad format", 559 (int)(statfmt - subfmt + 1), subfmt); 560 } 561 562 if (!nl && !nonl) 563 (void)fputc('\n', stdout); 564 (void)fflush(stdout); 565 } 566 567 static const char * 568 fmttime(char *buf, size_t len, const char *fmt, time_t secs, long nsecs) 569 { 570 struct tm tm; 571 char *fmt2; 572 if (localtime_r(&secs, &tm) == NULL) { 573 secs = 0; 574 (void)localtime_r(&secs, &tm); 575 } 576 if ((fmt2 = strstr(fmt, "%f")) != NULL) { 577 size_t flen = strlen(fmt) + 1024; 578 size_t o = (size_t)(fmt2 - fmt); 579 fmt2 = calloc(flen, 1); 580 if (fmt2 != NULL) { 581 memcpy(fmt2, fmt, o); 582 int sl = snprintf(fmt2 + o, flen - o, "%.9ld", nsecs); 583 if (sl == -1) 584 sl = 0; 585 strcpy(fmt2 + sl + o, fmt + o + 2); 586 fmt = fmt2; 587 } 588 } 589 590 (void)strftime(buf, len, fmt, &tm); 591 free(fmt2); 592 return buf; 593 } 594 595 /* 596 * Arranges output according to a single parsed format substring. 597 */ 598 static int 599 format1(const struct stat *st, 600 const char *file, 601 const char *fmt, int flen, 602 char *buf, size_t blen, 603 int flags, int size, int prec, int ofmt, 604 int hilo, int what, int quiet) 605 { 606 uint64_t data; 607 char *stmp, lfmt[24], tmp[20]; 608 const char *sdata; 609 char smode[12], sid[12], path[PATH_MAX + 4], visbuf[PATH_MAX * 4 + 4]; 610 struct passwd *pw; 611 struct group *gr; 612 time_t secs; 613 long nsecs; 614 int l; 615 int formats; /* bitmap of allowed formats for this datum */ 616 int small; /* true if datum is a small integer */ 617 int gottime; /* true if secs and nsecs are valid */ 618 int shift; /* powers of 2 to scale numbers before printing */ 619 size_t prefixlen; /* length of constant prefix for string data */ 620 621 formats = 0; 622 small = 0; 623 gottime = 0; 624 secs = 0; 625 nsecs = 0; 626 shift = 0; 627 prefixlen = 0; 628 629 /* 630 * First, pick out the data and tweak it based on hilo or 631 * specified output format (symlink output only). 632 */ 633 switch (what) { 634 case SHOW_st_dev: 635 case SHOW_st_rdev: 636 small = (sizeof(st->st_dev) == 4); 637 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 638 #if HAVE_DEVNAME 639 sdata = (what == SHOW_st_dev) ? 640 devname(st->st_dev, S_IFBLK) : 641 devname(st->st_rdev, 642 S_ISCHR(st->st_mode) ? S_IFCHR : 643 S_ISBLK(st->st_mode) ? S_IFBLK : 644 0U); 645 if (sdata == NULL) 646 sdata = "???"; 647 #endif /* HAVE_DEVNAME */ 648 if (hilo == HIGH_PIECE) { 649 data = major(data); 650 hilo = 0; 651 } 652 else if (hilo == LOW_PIECE) { 653 data = minor((unsigned)data); 654 hilo = 0; 655 } 656 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 657 #if HAVE_DEVNAME 658 FMTF_STRING; 659 #else /* HAVE_DEVNAME */ 660 0; 661 #endif /* HAVE_DEVNAME */ 662 if (ofmt == 0) { 663 if (data == (uint64_t)-1) 664 ofmt = FMTF_DECIMAL; 665 else 666 ofmt = FMTF_UNSIGNED; 667 } 668 break; 669 case SHOW_st_ino: 670 small = (sizeof(st->st_ino) == 4); 671 data = st->st_ino; 672 sdata = NULL; 673 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 674 if (ofmt == 0) 675 ofmt = FMTF_UNSIGNED; 676 break; 677 case SHOW_st_mode: 678 small = (sizeof(st->st_mode) == 4); 679 data = st->st_mode; 680 strmode(st->st_mode, smode); 681 stmp = smode; 682 l = strlen(stmp); 683 if (stmp[l - 1] == ' ') 684 stmp[--l] = '\0'; 685 if (hilo == HIGH_PIECE) { 686 data >>= 12; 687 stmp += 1; 688 stmp[3] = '\0'; 689 hilo = 0; 690 } 691 else if (hilo == MIDDLE_PIECE) { 692 data = (data >> 9) & 07; 693 stmp += 4; 694 stmp[3] = '\0'; 695 hilo = 0; 696 } 697 else if (hilo == LOW_PIECE) { 698 data &= 0777; 699 stmp += 7; 700 stmp[3] = '\0'; 701 hilo = 0; 702 } 703 sdata = stmp; 704 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 705 FMTF_STRING; 706 if (ofmt == 0) 707 ofmt = FMTF_OCTAL; 708 break; 709 case SHOW_st_nlink: 710 small = (sizeof(st->st_dev) == 4); 711 data = st->st_nlink; 712 sdata = NULL; 713 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 714 if (ofmt == 0) 715 ofmt = FMTF_UNSIGNED; 716 break; 717 case SHOW_st_uid: 718 small = (sizeof(st->st_uid) == 4); 719 data = st->st_uid; 720 if ((pw = getpwuid(st->st_uid)) != NULL) 721 sdata = pw->pw_name; 722 else { 723 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 724 sdata = sid; 725 } 726 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 727 FMTF_STRING; 728 if (ofmt == 0) 729 ofmt = FMTF_UNSIGNED; 730 break; 731 case SHOW_st_gid: 732 small = (sizeof(st->st_gid) == 4); 733 data = st->st_gid; 734 if ((gr = getgrgid(st->st_gid)) != NULL) 735 sdata = gr->gr_name; 736 else { 737 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 738 sdata = sid; 739 } 740 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 741 FMTF_STRING; 742 if (ofmt == 0) 743 ofmt = FMTF_UNSIGNED; 744 break; 745 case SHOW_st_atime: 746 gottime = 1; 747 secs = st->st_atime; 748 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 749 nsecs = st->st_atimensec; 750 #endif 751 /* FALLTHROUGH */ 752 case SHOW_st_mtime: 753 if (!gottime) { 754 gottime = 1; 755 secs = st->st_mtime; 756 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 757 nsecs = st->st_mtimensec; 758 #endif 759 } 760 /* FALLTHROUGH */ 761 case SHOW_st_ctime: 762 if (!gottime) { 763 gottime = 1; 764 secs = st->st_ctime; 765 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 766 nsecs = st->st_ctimensec; 767 #endif 768 } 769 /* FALLTHROUGH */ 770 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 771 case SHOW_st_btime: 772 if (!gottime) { 773 gottime = 1; 774 secs = st->st_birthtime; 775 #if HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 776 nsecs = st->st_birthtimensec; 777 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */ 778 } 779 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 780 small = (sizeof(secs) == 4); 781 data = secs; 782 sdata = fmttime(path, sizeof(path), timefmt, secs, nsecs); 783 784 sdata = path; 785 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 786 FMTF_FLOAT | FMTF_STRING; 787 if (ofmt == 0) 788 ofmt = FMTF_DECIMAL; 789 break; 790 case SHOW_st_size: 791 small = (sizeof(st->st_size) == 4); 792 data = st->st_size; 793 sdata = NULL; 794 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 795 if (ofmt == 0) 796 ofmt = FMTF_UNSIGNED; 797 switch (hilo) { 798 case HIGH_PIECE: 799 shift = 30; /* gigabytes */ 800 hilo = 0; 801 break; 802 case MIDDLE_PIECE: 803 shift = 20; /* megabytes */ 804 hilo = 0; 805 break; 806 case LOW_PIECE: 807 shift = 10; /* kilobytes */ 808 hilo = 0; 809 break; 810 } 811 break; 812 case SHOW_st_blocks: 813 small = (sizeof(st->st_blocks) == 4); 814 data = st->st_blocks; 815 sdata = NULL; 816 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 817 if (ofmt == 0) 818 ofmt = FMTF_UNSIGNED; 819 break; 820 case SHOW_st_blksize: 821 small = (sizeof(st->st_blksize) == 4); 822 data = st->st_blksize; 823 sdata = NULL; 824 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 825 if (ofmt == 0) 826 ofmt = FMTF_UNSIGNED; 827 break; 828 #if HAVE_STRUCT_STAT_ST_FLAGS 829 case SHOW_st_flags: 830 small = (sizeof(st->st_flags) == 4); 831 data = st->st_flags; 832 sdata = NULL; 833 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 834 if (ofmt == 0) 835 ofmt = FMTF_UNSIGNED; 836 break; 837 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 838 #if HAVE_STRUCT_STAT_ST_GEN 839 case SHOW_st_gen: 840 small = (sizeof(st->st_gen) == 4); 841 data = st->st_gen; 842 sdata = NULL; 843 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 844 if (ofmt == 0) 845 ofmt = FMTF_UNSIGNED; 846 break; 847 #endif /* HAVE_STRUCT_STAT_ST_GEN */ 848 case SHOW_realpath: 849 small = 0; 850 data = 0; 851 if (file == NULL) { 852 (void)strlcpy(path, "(stdin)", sizeof(path)); 853 sdata = path; 854 } else { 855 snprintf(path, sizeof(path), " -> "); 856 if (realpath(file, path + 4) == NULL) { 857 if (!quiet) 858 warn("realpath `%s'", file); 859 linkfail = 1; 860 l = 0; 861 path[0] = '\0'; 862 } 863 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 864 prefixlen = (ofmt == FMTF_STRING ? 4 : 0); 865 } 866 867 formats = FMTF_STRING; 868 if (ofmt == 0) 869 ofmt = FMTF_STRING; 870 break; 871 case SHOW_symlink: 872 small = 0; 873 data = 0; 874 if (S_ISLNK(st->st_mode)) { 875 snprintf(path, sizeof(path), " -> "); 876 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 877 if (l == -1) { 878 if (!quiet) 879 warn("readlink `%s'", file); 880 linkfail = 1; 881 l = 0; 882 path[0] = '\0'; 883 } 884 path[l + 4] = '\0'; 885 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 886 prefixlen = (ofmt == FMTF_STRING ? 4 : 0); 887 } 888 else { 889 linkfail = 1; 890 sdata = ""; 891 } 892 formats = FMTF_STRING; 893 if (ofmt == 0) 894 ofmt = FMTF_STRING; 895 break; 896 case SHOW_filetype: 897 small = 0; 898 data = 0; 899 sdata = ""; 900 if (hilo == 0 || hilo == LOW_PIECE) { 901 switch (st->st_mode & S_IFMT) { 902 case S_IFIFO: sdata = "|"; break; 903 case S_IFDIR: sdata = "/"; break; 904 case S_IFREG: 905 if (st->st_mode & 906 (S_IXUSR | S_IXGRP | S_IXOTH)) 907 sdata = "*"; 908 break; 909 case S_IFLNK: sdata = "@"; break; 910 #ifdef S_IFSOCK 911 case S_IFSOCK: sdata = "="; break; 912 #endif 913 #ifdef S_IFWHT 914 case S_IFWHT: sdata = "%"; break; 915 #endif /* S_IFWHT */ 916 #ifdef S_IFDOOR 917 case S_IFDOOR: sdata = ">"; break; 918 #endif /* S_IFDOOR */ 919 } 920 hilo = 0; 921 } 922 else if (hilo == HIGH_PIECE) { 923 switch (st->st_mode & S_IFMT) { 924 case S_IFIFO: sdata = "Fifo File"; break; 925 case S_IFCHR: sdata = "Character Device"; break; 926 case S_IFDIR: sdata = "Directory"; break; 927 case S_IFBLK: sdata = "Block Device"; break; 928 case S_IFREG: sdata = "Regular File"; break; 929 case S_IFLNK: sdata = "Symbolic Link"; break; 930 #ifdef S_IFSOCK 931 case S_IFSOCK: sdata = "Socket"; break; 932 #endif 933 #ifdef S_IFWHT 934 case S_IFWHT: sdata = "Whiteout File"; break; 935 #endif /* S_IFWHT */ 936 #ifdef S_IFDOOR 937 case S_IFDOOR: sdata = "Door"; break; 938 #endif /* S_IFDOOR */ 939 default: sdata = "???"; break; 940 } 941 hilo = 0; 942 } 943 formats = FMTF_STRING; 944 if (ofmt == 0) 945 ofmt = FMTF_STRING; 946 break; 947 case SHOW_filename: 948 small = 0; 949 data = 0; 950 if (file == NULL) { 951 (void)strlcpy(path, "(stdin)", sizeof(path)); 952 if (hilo == HIGH_PIECE || hilo == LOW_PIECE) 953 hilo = 0; 954 } 955 else if (hilo == 0) 956 (void)strlcpy(path, file, sizeof(path)); 957 else { 958 char *s; 959 (void)strlcpy(path, file, sizeof(path)); 960 s = strrchr(path, '/'); 961 if (s != NULL) { 962 /* trim off trailing /'s */ 963 while (s != path && 964 s[0] == '/' && s[1] == '\0') 965 *s-- = '\0'; 966 s = strrchr(path, '/'); 967 } 968 if (hilo == HIGH_PIECE) { 969 if (s == NULL) 970 (void)strlcpy(path, ".", sizeof(path)); 971 else { 972 while (s != path && s[0] == '/') 973 *s-- = '\0'; 974 } 975 hilo = 0; 976 } 977 else if (hilo == LOW_PIECE) { 978 if (s != NULL && s[1] != '\0') 979 (void)strlcpy(path, s + 1, 980 sizeof(path)); 981 hilo = 0; 982 } 983 } 984 sdata = path; 985 formats = FMTF_STRING; 986 if (ofmt == 0) 987 ofmt = FMTF_STRING; 988 break; 989 case SHOW_sizerdev: 990 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 991 char majdev[20], mindev[20]; 992 int l1, l2; 993 994 l1 = format1(st, 995 file, 996 fmt, flen, 997 majdev, sizeof(majdev), 998 flags, size, prec, 999 ofmt, HIGH_PIECE, SHOW_st_rdev, quiet); 1000 l2 = format1(st, 1001 file, 1002 fmt, flen, 1003 mindev, sizeof(mindev), 1004 flags, size, prec, 1005 ofmt, LOW_PIECE, SHOW_st_rdev, quiet); 1006 return (snprintf(buf, blen, "%.*s,%.*s", 1007 l1, majdev, l2, mindev)); 1008 } 1009 else { 1010 return (format1(st, 1011 file, 1012 fmt, flen, 1013 buf, blen, 1014 flags, size, prec, 1015 ofmt, 0, SHOW_st_size, quiet)); 1016 } 1017 /*NOTREACHED*/ 1018 default: 1019 errx(1, "%.*s: bad format", (int)flen, fmt); 1020 } 1021 1022 /* 1023 * If a subdatum was specified but not supported, or an output 1024 * format was selected that is not supported, that's an error. 1025 */ 1026 if (hilo != 0 || (ofmt & formats) == 0) 1027 errx(1, "%.*s: bad format", (int)flen, fmt); 1028 1029 /* 1030 * FLAG_POUND with FMTF_STRING means use vis(3) encoding. 1031 * First prefixlen chars are not encoded. 1032 */ 1033 if ((flags & FLAG_POUND) != 0 && ofmt == FMTF_STRING) { 1034 flags &= !FLAG_POUND; 1035 strncpy(visbuf, sdata, prefixlen); 1036 strnvis(visbuf + prefixlen, sizeof(visbuf) - prefixlen, 1037 sdata + prefixlen, VIS_WHITE | VIS_OCTAL | VIS_CSTYLE); 1038 sdata = visbuf; 1039 } 1040 1041 /* 1042 * Assemble the format string for passing to printf(3). 1043 */ 1044 lfmt[0] = '\0'; 1045 (void)strcat(lfmt, "%"); 1046 if (flags & FLAG_POUND) 1047 (void)strcat(lfmt, "#"); 1048 if (flags & FLAG_SPACE) 1049 (void)strcat(lfmt, " "); 1050 if (flags & FLAG_PLUS) 1051 (void)strcat(lfmt, "+"); 1052 if (flags & FLAG_MINUS) 1053 (void)strcat(lfmt, "-"); 1054 if (flags & FLAG_ZERO) 1055 (void)strcat(lfmt, "0"); 1056 1057 /* 1058 * Only the timespecs support the FLOAT output format, and that 1059 * requires work that differs from the other formats. 1060 */ 1061 if (ofmt == FMTF_FLOAT) { 1062 /* 1063 * Nothing after the decimal point, so just print seconds. 1064 */ 1065 if (prec == 0) { 1066 if (size != -1) { 1067 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1068 (void)strcat(lfmt, tmp); 1069 } 1070 (void)strcat(lfmt, "lld"); 1071 return (snprintf(buf, blen, lfmt, 1072 (long long)secs)); 1073 } 1074 1075 /* 1076 * Unspecified precision gets all the precision we have: 1077 * 9 digits. 1078 */ 1079 if (prec == -1) 1080 prec = 9; 1081 1082 /* 1083 * Adjust the size for the decimal point and the digits 1084 * that will follow. 1085 */ 1086 size -= prec + 1; 1087 1088 /* 1089 * Any leftover size that's legitimate will be used. 1090 */ 1091 if (size > 0) { 1092 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1093 (void)strcat(lfmt, tmp); 1094 } 1095 /* Seconds: time_t cast to long long. */ 1096 (void)strcat(lfmt, "lld"); 1097 1098 /* 1099 * The stuff after the decimal point always needs zero 1100 * filling. 1101 */ 1102 (void)strcat(lfmt, ".%0"); 1103 1104 /* 1105 * We can "print" at most nine digits of precision. The 1106 * rest we will pad on at the end. 1107 * 1108 * Nanoseconds: long. 1109 */ 1110 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec); 1111 (void)strcat(lfmt, tmp); 1112 1113 /* 1114 * For precision of less that nine digits, trim off the 1115 * less significant figures. 1116 */ 1117 for (; prec < 9; prec++) 1118 nsecs /= 10; 1119 1120 /* 1121 * Use the format, and then tack on any zeroes that 1122 * might be required to make up the requested precision. 1123 */ 1124 l = snprintf(buf, blen, lfmt, (long long)secs, nsecs); 1125 for (; prec > 9 && l < (int)blen; prec--, l++) 1126 (void)strcat(buf, "0"); 1127 return (l); 1128 } 1129 1130 /* 1131 * Add on size and precision, if specified, to the format. 1132 */ 1133 if (size != -1) { 1134 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1135 (void)strcat(lfmt, tmp); 1136 } 1137 if (prec != -1) { 1138 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 1139 (void)strcat(lfmt, tmp); 1140 } 1141 1142 /* 1143 * String output uses the temporary sdata. 1144 */ 1145 if (ofmt == FMTF_STRING) { 1146 if (sdata == NULL) 1147 errx(1, "%.*s: bad format", (int)flen, fmt); 1148 (void)strcat(lfmt, "s"); 1149 return (snprintf(buf, blen, lfmt, sdata)); 1150 } 1151 1152 /* 1153 * Ensure that sign extension does not cause bad looking output 1154 * for some forms. 1155 */ 1156 if (small && ofmt != FMTF_DECIMAL) 1157 data = (uint32_t)data; 1158 1159 /* 1160 * The four "numeric" output forms. 1161 */ 1162 (void)strcat(lfmt, "ll"); 1163 switch (ofmt) { 1164 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 1165 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 1166 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 1167 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 1168 } 1169 1170 /* 1171 * shift and round to nearest for kilobytes, megabytes, 1172 * gigabytes. 1173 */ 1174 if (shift > 0) { 1175 data >>= (shift - 1); 1176 data++; 1177 data >>= 1; 1178 } 1179 1180 return (snprintf(buf, blen, lfmt, data)); 1181 } 1182
Indexes created Mon Sep 22 13:09:51 GMT 2025