stat.c revision 1.35
1 /* $NetBSD: stat.c,v 1.35 2011/09/06 18:31:22 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 2002 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 #endif 35 36 #include <sys/cdefs.h> 37 #if !defined(lint) 38 __RCSID("$NetBSD: stat.c,v 1.35 2011/09/06 18:31:22 joerg Exp $"); 39 #endif 40 41 #if ! HAVE_NBTOOL_CONFIG_H 42 #define HAVE_STRUCT_STAT_ST_FLAGS 1 43 #define HAVE_STRUCT_STAT_ST_GEN 1 44 #define HAVE_STRUCT_STAT_ST_BIRTHTIME 1 45 #define HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 1 46 #define HAVE_STRUCT_STAT_ST_MTIMENSEC 1 47 #define HAVE_DEVNAME 1 48 #endif /* HAVE_NBTOOL_CONFIG_H */ 49 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 53 #include <ctype.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <grp.h> 57 #include <limits.h> 58 #include <pwd.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <time.h> 63 #include <unistd.h> 64 65 #if HAVE_STRUCT_STAT_ST_FLAGS 66 #define DEF_F "%#Xf " 67 #define RAW_F "%f " 68 #define SHELL_F " st_flags=%f" 69 #else /* HAVE_STRUCT_STAT_ST_FLAGS */ 70 #define DEF_F 71 #define RAW_F 72 #define SHELL_F 73 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 74 75 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 76 #define DEF_B "\"%SB\" " 77 #define RAW_B "%B " 78 #define SHELL_B "st_birthtime=%B " 79 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 80 #define DEF_B 81 #define RAW_B 82 #define SHELL_B 83 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 84 85 #if HAVE_STRUCT_STAT_ST_ATIM 86 #define st_atimespec st_atim 87 #define st_ctimespec st_ctim 88 #define st_mtimespec st_mtim 89 #endif /* HAVE_STRUCT_STAT_ST_ATIM */ 90 91 #define DEF_FORMAT \ 92 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \ 93 "%k %b " DEF_F "%N" 94 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \ 95 "%k %b " RAW_F "%N" 96 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 97 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 98 #define SHELL_FORMAT \ 99 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 100 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 101 "st_atime=%a st_mtime=%m st_ctime=%c " SHELL_B \ 102 "st_blksize=%k st_blocks=%b" SHELL_F 103 #define LINUX_FORMAT \ 104 " File: \"%N\"%n" \ 105 " Size: %-11z FileType: %HT%n" \ 106 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 107 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 108 "Access: %Sa%n" \ 109 "Modify: %Sm%n" \ 110 "Change: %Sc" 111 112 #define TIME_FORMAT "%b %e %T %Y" 113 114 #define FLAG_POUND 0x01 115 #define FLAG_SPACE 0x02 116 #define FLAG_PLUS 0x04 117 #define FLAG_ZERO 0x08 118 #define FLAG_MINUS 0x10 119 120 /* 121 * These format characters must all be unique, except the magic one. 122 */ 123 #define FMT_MAGIC '%' 124 #define FMT_DOT '.' 125 126 #define SIMPLE_NEWLINE 'n' 127 #define SIMPLE_TAB 't' 128 #define SIMPLE_PERCENT '%' 129 #define SIMPLE_NUMBER '@' 130 131 #define FMT_POUND '#' 132 #define FMT_SPACE ' ' 133 #define FMT_PLUS '+' 134 #define FMT_ZERO '0' 135 #define FMT_MINUS '-' 136 137 #define FMT_DECIMAL 'D' 138 #define FMT_OCTAL 'O' 139 #define FMT_UNSIGNED 'U' 140 #define FMT_HEX 'X' 141 #define FMT_FLOAT 'F' 142 #define FMT_STRING 'S' 143 144 #define FMTF_DECIMAL 0x01 145 #define FMTF_OCTAL 0x02 146 #define FMTF_UNSIGNED 0x04 147 #define FMTF_HEX 0x08 148 #define FMTF_FLOAT 0x10 149 #define FMTF_STRING 0x20 150 151 #define HIGH_PIECE 'H' 152 #define MIDDLE_PIECE 'M' 153 #define LOW_PIECE 'L' 154 155 #define SHOW_realpath 'R' 156 #define SHOW_st_dev 'd' 157 #define SHOW_st_ino 'i' 158 #define SHOW_st_mode 'p' 159 #define SHOW_st_nlink 'l' 160 #define SHOW_st_uid 'u' 161 #define SHOW_st_gid 'g' 162 #define SHOW_st_rdev 'r' 163 #define SHOW_st_atime 'a' 164 #define SHOW_st_mtime 'm' 165 #define SHOW_st_ctime 'c' 166 #define SHOW_st_btime 'B' 167 #define SHOW_st_size 'z' 168 #define SHOW_st_blocks 'b' 169 #define SHOW_st_blksize 'k' 170 #define SHOW_st_flags 'f' 171 #define SHOW_st_gen 'v' 172 #define SHOW_symlink 'Y' 173 #define SHOW_filetype 'T' 174 #define SHOW_filename 'N' 175 #define SHOW_sizerdev 'Z' 176 177 static void usage(const char *) __dead; 178 static void output(const struct stat *, const char *, 179 const char *, int, int, int); 180 static int format1(const struct stat *, /* stat info */ 181 const char *, /* the file name */ 182 const char *, int, /* the format string itself */ 183 char *, size_t, /* a place to put the output */ 184 int, int, int, int, /* the parsed format */ 185 int, int, int); 186 187 static const char *timefmt; 188 static int linkfail; 189 190 #define addchar(s, c, nl) \ 191 do { \ 192 (void)fputc((c), (s)); \ 193 (*nl) = ((c) == '\n'); \ 194 } while (0/*CONSTCOND*/) 195 196 int 197 main(int argc, char *argv[]) 198 { 199 struct stat st; 200 int ch, rc, errs, am_readlink; 201 int lsF, fmtchar, usestat, fn, nonl, quiet; 202 const char *statfmt, *options, *synopsis; 203 204 am_readlink = 0; 205 lsF = 0; 206 fmtchar = '\0'; 207 usestat = 0; 208 nonl = 0; 209 quiet = 0; 210 linkfail = 0; 211 statfmt = NULL; 212 timefmt = NULL; 213 214 setprogname(argv[0]); 215 216 if (strcmp(getprogname(), "readlink") == 0) { 217 am_readlink = 1; 218 options = "fnqsv"; 219 synopsis = "[-fnqsv] [file ...]"; 220 statfmt = "%Y"; 221 fmtchar = 'f'; 222 quiet = 1; 223 } else { 224 options = "f:FlLnqrst:x"; 225 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 226 } 227 228 while ((ch = getopt(argc, argv, options)) != -1) 229 switch (ch) { 230 case 'F': 231 lsF = 1; 232 break; 233 case 'L': 234 usestat = 1; 235 break; 236 case 'n': 237 nonl = 1; 238 break; 239 case 'q': 240 quiet = 1; 241 break; 242 case 'f': 243 if (am_readlink) { 244 statfmt = "%R"; 245 break; 246 } 247 statfmt = optarg; 248 /* FALLTHROUGH */ 249 case 'l': 250 case 'r': 251 case 's': 252 if (am_readlink) { 253 quiet = 1; 254 break; 255 } 256 /*FALLTHROUGH*/ 257 case 'x': 258 if (fmtchar != 0) 259 errx(1, "can't use format '%c' with '%c'", 260 fmtchar, ch); 261 fmtchar = ch; 262 break; 263 case 't': 264 timefmt = optarg; 265 break; 266 case 'v': 267 quiet = 0; 268 break; 269 default: 270 usage(synopsis); 271 } 272 273 argc -= optind; 274 argv += optind; 275 fn = 1; 276 277 if (fmtchar == '\0') { 278 if (lsF) 279 fmtchar = 'l'; 280 else { 281 fmtchar = 'f'; 282 statfmt = DEF_FORMAT; 283 } 284 } 285 286 if (lsF && fmtchar != 'l') 287 errx(1, "can't use format '%c' with -F", fmtchar); 288 289 switch (fmtchar) { 290 case 'f': 291 /* statfmt already set */ 292 break; 293 case 'l': 294 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 295 break; 296 case 'r': 297 statfmt = RAW_FORMAT; 298 break; 299 case 's': 300 statfmt = SHELL_FORMAT; 301 break; 302 case 'x': 303 statfmt = LINUX_FORMAT; 304 if (timefmt == NULL) 305 timefmt = "%c"; 306 break; 307 default: 308 usage(synopsis); 309 /*NOTREACHED*/ 310 } 311 312 if (timefmt == NULL) 313 timefmt = TIME_FORMAT; 314 315 errs = 0; 316 do { 317 if (argc == 0) 318 rc = fstat(STDIN_FILENO, &st); 319 else if (usestat) { 320 /* 321 * Try stat() and if it fails, fall back to 322 * lstat() just in case we're examining a 323 * broken symlink. 324 */ 325 if ((rc = stat(argv[0], &st)) == -1 && 326 errno == ENOENT && 327 (rc = lstat(argv[0], &st)) == -1) 328 errno = ENOENT; 329 } 330 else 331 rc = lstat(argv[0], &st); 332 333 if (rc == -1) { 334 errs = 1; 335 linkfail = 1; 336 if (!quiet) 337 warn("%s: %s", 338 argc == 0 ? "(stdin)" : argv[0], 339 usestat ? "stat" : "lstat"); 340 } 341 else 342 output(&st, argv[0], statfmt, fn, nonl, quiet); 343 344 argv++; 345 argc--; 346 fn++; 347 } while (argc > 0); 348 349 return (am_readlink ? linkfail : errs); 350 } 351 352 static void 353 usage(const char *synopsis) 354 { 355 356 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 357 exit(1); 358 } 359 360 /* 361 * Parses a format string. 362 */ 363 static void 364 output(const struct stat *st, const char *file, 365 const char *statfmt, int fn, int nonl, int quiet) 366 { 367 int flags, size, prec, ofmt, hilo, what; 368 char buf[PATH_MAX + 4 + 1]; 369 const char *subfmt; 370 int nl, t, i; 371 372 nl = 1; 373 while (*statfmt != '\0') { 374 375 /* 376 * Non-format characters go straight out. 377 */ 378 if (*statfmt != FMT_MAGIC) { 379 addchar(stdout, *statfmt, &nl); 380 statfmt++; 381 continue; 382 } 383 384 /* 385 * The current format "substring" starts here, 386 * and then we skip the magic. 387 */ 388 subfmt = statfmt; 389 statfmt++; 390 391 /* 392 * Some simple one-character "formats". 393 */ 394 switch (*statfmt) { 395 case SIMPLE_NEWLINE: 396 addchar(stdout, '\n', &nl); 397 statfmt++; 398 continue; 399 case SIMPLE_TAB: 400 addchar(stdout, '\t', &nl); 401 statfmt++; 402 continue; 403 case SIMPLE_PERCENT: 404 addchar(stdout, '%', &nl); 405 statfmt++; 406 continue; 407 case SIMPLE_NUMBER: { 408 char num[12], *p; 409 410 snprintf(num, sizeof(num), "%d", fn); 411 for (p = &num[0]; *p; p++) 412 addchar(stdout, *p, &nl); 413 statfmt++; 414 continue; 415 } 416 } 417 418 /* 419 * This must be an actual format string. Format strings are 420 * similar to printf(3) formats up to a point, and are of 421 * the form: 422 * 423 * % required start of format 424 * [-# +0] opt. format characters 425 * size opt. field width 426 * . opt. decimal separator, followed by 427 * prec opt. precision 428 * fmt opt. output specifier (string, numeric, etc.) 429 * sub opt. sub field specifier (high, middle, low) 430 * datum required field specifier (size, mode, etc) 431 * 432 * Only the % and the datum selector are required. All data 433 * have reasonable default output forms. The "sub" specifier 434 * only applies to certain data (mode, dev, rdev, filetype). 435 * The symlink output defaults to STRING, yet will only emit 436 * the leading " -> " if STRING is explicitly specified. The 437 * sizerdev datum will generate rdev output for character or 438 * block devices, and size output for all others. 439 */ 440 flags = 0; 441 do { 442 if (*statfmt == FMT_POUND) 443 flags |= FLAG_POUND; 444 else if (*statfmt == FMT_SPACE) 445 flags |= FLAG_SPACE; 446 else if (*statfmt == FMT_PLUS) 447 flags |= FLAG_PLUS; 448 else if (*statfmt == FMT_ZERO) 449 flags |= FLAG_ZERO; 450 else if (*statfmt == FMT_MINUS) 451 flags |= FLAG_MINUS; 452 else 453 break; 454 statfmt++; 455 } while (1/*CONSTCOND*/); 456 457 size = -1; 458 if (isdigit((unsigned)*statfmt)) { 459 size = 0; 460 while (isdigit((unsigned)*statfmt)) { 461 size = (size * 10) + (*statfmt - '0'); 462 statfmt++; 463 if (size < 0) 464 goto badfmt; 465 } 466 } 467 468 prec = -1; 469 if (*statfmt == FMT_DOT) { 470 statfmt++; 471 472 prec = 0; 473 while (isdigit((unsigned)*statfmt)) { 474 prec = (prec * 10) + (*statfmt - '0'); 475 statfmt++; 476 if (prec < 0) 477 goto badfmt; 478 } 479 } 480 481 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 482 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 483 switch (*statfmt) { 484 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 485 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 486 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 487 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 488 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 489 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 490 default: 491 ofmt = 0; 492 break; 493 } 494 495 switch (*statfmt) { 496 fmtcase(hilo, HIGH_PIECE); 497 fmtcase(hilo, MIDDLE_PIECE); 498 fmtcase(hilo, LOW_PIECE); 499 default: 500 hilo = 0; 501 break; 502 } 503 504 switch (*statfmt) { 505 fmtcase(what, SHOW_realpath); 506 fmtcase(what, SHOW_st_dev); 507 fmtcase(what, SHOW_st_ino); 508 fmtcase(what, SHOW_st_mode); 509 fmtcase(what, SHOW_st_nlink); 510 fmtcase(what, SHOW_st_uid); 511 fmtcase(what, SHOW_st_gid); 512 fmtcase(what, SHOW_st_rdev); 513 fmtcase(what, SHOW_st_atime); 514 fmtcase(what, SHOW_st_mtime); 515 fmtcase(what, SHOW_st_ctime); 516 fmtcase(what, SHOW_st_btime); 517 fmtcase(what, SHOW_st_size); 518 fmtcase(what, SHOW_st_blocks); 519 fmtcase(what, SHOW_st_blksize); 520 fmtcase(what, SHOW_st_flags); 521 fmtcase(what, SHOW_st_gen); 522 fmtcase(what, SHOW_symlink); 523 fmtcase(what, SHOW_filetype); 524 fmtcase(what, SHOW_filename); 525 fmtcase(what, SHOW_sizerdev); 526 default: 527 goto badfmt; 528 } 529 #undef fmtcasef 530 #undef fmtcase 531 532 t = format1(st, 533 file, 534 subfmt, statfmt - subfmt, 535 buf, sizeof(buf), 536 flags, size, prec, ofmt, hilo, what, quiet); 537 538 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++) 539 addchar(stdout, buf[i], &nl); 540 541 continue; 542 543 badfmt: 544 errx(1, "%.*s: bad format", 545 (int)(statfmt - subfmt + 1), subfmt); 546 } 547 548 if (!nl && !nonl) 549 (void)fputc('\n', stdout); 550 (void)fflush(stdout); 551 } 552 553 /* 554 * Arranges output according to a single parsed format substring. 555 */ 556 static int 557 format1(const struct stat *st, 558 const char *file, 559 const char *fmt, int flen, 560 char *buf, size_t blen, 561 int flags, int size, int prec, int ofmt, 562 int hilo, int what, int quiet) 563 { 564 u_int64_t data; 565 char *stmp, lfmt[24], tmp[20]; 566 const char *sdata; 567 char smode[12], sid[12], path[PATH_MAX + 4]; 568 struct passwd *pw; 569 struct group *gr; 570 struct tm *tm; 571 time_t secs; 572 long nsecs; 573 int l, small, formats, gottime, shift; 574 575 formats = 0; 576 small = 0; 577 gottime = 0; 578 secs = 0; 579 nsecs = 0; 580 shift = 0; 581 582 /* 583 * First, pick out the data and tweak it based on hilo or 584 * specified output format (symlink output only). 585 */ 586 switch (what) { 587 case SHOW_st_dev: 588 case SHOW_st_rdev: 589 small = (sizeof(st->st_dev) == 4); 590 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 591 #if HAVE_DEVNAME 592 sdata = (what == SHOW_st_dev) ? 593 devname(st->st_dev, S_IFBLK) : 594 devname(st->st_rdev, 595 S_ISCHR(st->st_mode) ? S_IFCHR : 596 S_ISBLK(st->st_mode) ? S_IFBLK : 597 0U); 598 if (sdata == NULL) 599 sdata = "???"; 600 #endif /* HAVE_DEVNAME */ 601 if (hilo == HIGH_PIECE) { 602 data = major(data); 603 hilo = 0; 604 } 605 else if (hilo == LOW_PIECE) { 606 data = minor((unsigned)data); 607 hilo = 0; 608 } 609 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 610 #if HAVE_DEVNAME 611 FMTF_STRING; 612 #else /* HAVE_DEVNAME */ 613 0; 614 #endif /* HAVE_DEVNAME */ 615 if (ofmt == 0) 616 ofmt = FMTF_UNSIGNED; 617 break; 618 case SHOW_st_ino: 619 small = (sizeof(st->st_ino) == 4); 620 data = st->st_ino; 621 sdata = NULL; 622 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 623 if (ofmt == 0) 624 ofmt = FMTF_UNSIGNED; 625 break; 626 case SHOW_st_mode: 627 small = (sizeof(st->st_mode) == 4); 628 data = st->st_mode; 629 strmode(st->st_mode, smode); 630 stmp = smode; 631 l = strlen(stmp); 632 if (stmp[l - 1] == ' ') 633 stmp[--l] = '\0'; 634 if (hilo == HIGH_PIECE) { 635 data >>= 12; 636 stmp += 1; 637 stmp[3] = '\0'; 638 hilo = 0; 639 } 640 else if (hilo == MIDDLE_PIECE) { 641 data = (data >> 9) & 07; 642 stmp += 4; 643 stmp[3] = '\0'; 644 hilo = 0; 645 } 646 else if (hilo == LOW_PIECE) { 647 data &= 0777; 648 stmp += 7; 649 stmp[3] = '\0'; 650 hilo = 0; 651 } 652 sdata = stmp; 653 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 654 FMTF_STRING; 655 if (ofmt == 0) 656 ofmt = FMTF_OCTAL; 657 break; 658 case SHOW_st_nlink: 659 small = (sizeof(st->st_dev) == 4); 660 data = st->st_nlink; 661 sdata = NULL; 662 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 663 if (ofmt == 0) 664 ofmt = FMTF_UNSIGNED; 665 break; 666 case SHOW_st_uid: 667 small = (sizeof(st->st_uid) == 4); 668 data = st->st_uid; 669 if ((pw = getpwuid(st->st_uid)) != NULL) 670 sdata = pw->pw_name; 671 else { 672 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 673 sdata = sid; 674 } 675 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 676 FMTF_STRING; 677 if (ofmt == 0) 678 ofmt = FMTF_UNSIGNED; 679 break; 680 case SHOW_st_gid: 681 small = (sizeof(st->st_gid) == 4); 682 data = st->st_gid; 683 if ((gr = getgrgid(st->st_gid)) != NULL) 684 sdata = gr->gr_name; 685 else { 686 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 687 sdata = sid; 688 } 689 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 690 FMTF_STRING; 691 if (ofmt == 0) 692 ofmt = FMTF_UNSIGNED; 693 break; 694 case SHOW_st_atime: 695 gottime = 1; 696 secs = st->st_atime; 697 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 698 nsecs = st->st_atimensec; 699 #endif 700 /* FALLTHROUGH */ 701 case SHOW_st_mtime: 702 if (!gottime) { 703 gottime = 1; 704 secs = st->st_mtime; 705 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 706 nsecs = st->st_mtimensec; 707 #endif 708 } 709 /* FALLTHROUGH */ 710 case SHOW_st_ctime: 711 if (!gottime) { 712 gottime = 1; 713 secs = st->st_ctime; 714 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 715 nsecs = st->st_ctimensec; 716 #endif 717 } 718 /* FALLTHROUGH */ 719 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 720 case SHOW_st_btime: 721 if (!gottime) { 722 gottime = 1; 723 secs = st->st_birthtime; 724 #if HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 725 nsecs = st->st_birthtimensec; 726 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */ 727 } 728 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 729 small = (sizeof(secs) == 4); 730 data = secs; 731 tm = localtime(&secs); 732 if (tm == NULL) { 733 secs = 0; 734 tm = localtime(&secs); 735 } 736 (void)strftime(path, sizeof(path), timefmt, tm); 737 sdata = path; 738 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 739 FMTF_FLOAT | FMTF_STRING; 740 if (ofmt == 0) 741 ofmt = FMTF_DECIMAL; 742 break; 743 case SHOW_st_size: 744 small = (sizeof(st->st_size) == 4); 745 data = st->st_size; 746 sdata = NULL; 747 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 748 if (ofmt == 0) 749 ofmt = FMTF_UNSIGNED; 750 switch (hilo) { 751 case HIGH_PIECE: 752 shift = 30; /* gigabytes */ 753 hilo = 0; 754 break; 755 case MIDDLE_PIECE: 756 shift = 20; /* megabytes */ 757 hilo = 0; 758 break; 759 case LOW_PIECE: 760 shift = 10; /* kilobytes */ 761 hilo = 0; 762 break; 763 } 764 break; 765 case SHOW_st_blocks: 766 small = (sizeof(st->st_blocks) == 4); 767 data = st->st_blocks; 768 sdata = NULL; 769 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 770 if (ofmt == 0) 771 ofmt = FMTF_UNSIGNED; 772 break; 773 case SHOW_st_blksize: 774 small = (sizeof(st->st_blksize) == 4); 775 data = st->st_blksize; 776 sdata = NULL; 777 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 778 if (ofmt == 0) 779 ofmt = FMTF_UNSIGNED; 780 break; 781 #if HAVE_STRUCT_STAT_ST_FLAGS 782 case SHOW_st_flags: 783 small = (sizeof(st->st_flags) == 4); 784 data = st->st_flags; 785 sdata = NULL; 786 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 787 if (ofmt == 0) 788 ofmt = FMTF_UNSIGNED; 789 break; 790 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 791 #if HAVE_STRUCT_STAT_ST_GEN 792 case SHOW_st_gen: 793 small = (sizeof(st->st_gen) == 4); 794 data = st->st_gen; 795 sdata = NULL; 796 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 797 if (ofmt == 0) 798 ofmt = FMTF_UNSIGNED; 799 break; 800 #endif /* HAVE_STRUCT_STAT_ST_GEN */ 801 case SHOW_realpath: 802 small = 0; 803 data = 0; 804 if (file == NULL) { 805 (void)strlcpy(path, "(stdin)", sizeof(path)); 806 sdata = path; 807 } else { 808 snprintf(path, sizeof(path), " -> "); 809 if (realpath(file, path + 4) == NULL) { 810 if (!quiet) 811 warn("realpath `%s'", file); 812 linkfail = 1; 813 l = 0; 814 path[0] = '\0'; 815 } 816 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 817 } 818 819 formats = FMTF_STRING; 820 if (ofmt == 0) 821 ofmt = FMTF_STRING; 822 break; 823 case SHOW_symlink: 824 small = 0; 825 data = 0; 826 if (S_ISLNK(st->st_mode)) { 827 snprintf(path, sizeof(path), " -> "); 828 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 829 if (l == -1) { 830 if (!quiet) 831 warn("readlink `%s'", file); 832 linkfail = 1; 833 l = 0; 834 path[0] = '\0'; 835 } 836 path[l + 4] = '\0'; 837 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 838 } 839 else { 840 linkfail = 1; 841 sdata = ""; 842 } 843 formats = FMTF_STRING; 844 if (ofmt == 0) 845 ofmt = FMTF_STRING; 846 break; 847 case SHOW_filetype: 848 small = 0; 849 data = 0; 850 sdata = ""; 851 if (hilo == 0 || hilo == LOW_PIECE) { 852 switch (st->st_mode & S_IFMT) { 853 case S_IFIFO: sdata = "|"; break; 854 case S_IFDIR: sdata = "/"; break; 855 case S_IFREG: 856 if (st->st_mode & 857 (S_IXUSR | S_IXGRP | S_IXOTH)) 858 sdata = "*"; 859 break; 860 case S_IFLNK: sdata = "@"; break; 861 #ifdef S_IFSOCK 862 case S_IFSOCK: sdata = "="; break; 863 #endif 864 #ifdef S_IFWHT 865 case S_IFWHT: sdata = "%"; break; 866 #endif /* S_IFWHT */ 867 #ifdef S_IFDOOR 868 case S_IFDOOR: sdata = ">"; break; 869 #endif /* S_IFDOOR */ 870 } 871 hilo = 0; 872 } 873 else if (hilo == HIGH_PIECE) { 874 switch (st->st_mode & S_IFMT) { 875 case S_IFIFO: sdata = "Fifo File"; break; 876 case S_IFCHR: sdata = "Character Device"; break; 877 case S_IFDIR: sdata = "Directory"; break; 878 case S_IFBLK: sdata = "Block Device"; break; 879 case S_IFREG: sdata = "Regular File"; break; 880 case S_IFLNK: sdata = "Symbolic Link"; break; 881 #ifdef S_IFSOCK 882 case S_IFSOCK: sdata = "Socket"; break; 883 #endif 884 #ifdef S_IFWHT 885 case S_IFWHT: sdata = "Whiteout File"; break; 886 #endif /* S_IFWHT */ 887 #ifdef S_IFDOOR 888 case S_IFDOOR: sdata = "Door"; break; 889 #endif /* S_IFDOOR */ 890 default: sdata = "???"; break; 891 } 892 hilo = 0; 893 } 894 formats = FMTF_STRING; 895 if (ofmt == 0) 896 ofmt = FMTF_STRING; 897 break; 898 case SHOW_filename: 899 small = 0; 900 data = 0; 901 if (file == NULL) { 902 (void)strlcpy(path, "(stdin)", sizeof(path)); 903 if (hilo == HIGH_PIECE || hilo == LOW_PIECE) 904 hilo = 0; 905 } 906 else if (hilo == 0) 907 (void)strlcpy(path, file, sizeof(path)); 908 else { 909 char *s; 910 (void)strlcpy(path, file, sizeof(path)); 911 s = strrchr(path, '/'); 912 if (s != NULL) { 913 /* trim off trailing /'s */ 914 while (s != path && 915 s[0] == '/' && s[1] == '\0') 916 *s-- = '\0'; 917 s = strrchr(path, '/'); 918 } 919 if (hilo == HIGH_PIECE) { 920 if (s == NULL) 921 (void)strlcpy(path, ".", sizeof(path)); 922 else { 923 while (s != path && s[0] == '/') 924 *s-- = '\0'; 925 } 926 hilo = 0; 927 } 928 else if (hilo == LOW_PIECE) { 929 if (s != NULL && s[1] != '\0') 930 (void)strlcpy(path, s + 1, 931 sizeof(path)); 932 hilo = 0; 933 } 934 } 935 sdata = path; 936 formats = FMTF_STRING; 937 if (ofmt == 0) 938 ofmt = FMTF_STRING; 939 break; 940 case SHOW_sizerdev: 941 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 942 char majdev[20], mindev[20]; 943 int l1, l2; 944 945 l1 = format1(st, 946 file, 947 fmt, flen, 948 majdev, sizeof(majdev), 949 flags, size, prec, 950 ofmt, HIGH_PIECE, SHOW_st_rdev, quiet); 951 l2 = format1(st, 952 file, 953 fmt, flen, 954 mindev, sizeof(mindev), 955 flags, size, prec, 956 ofmt, LOW_PIECE, SHOW_st_rdev, quiet); 957 return (snprintf(buf, blen, "%.*s,%.*s", 958 l1, majdev, l2, mindev)); 959 } 960 else { 961 return (format1(st, 962 file, 963 fmt, flen, 964 buf, blen, 965 flags, size, prec, 966 ofmt, 0, SHOW_st_size, quiet)); 967 } 968 /*NOTREACHED*/ 969 default: 970 errx(1, "%.*s: bad format", (int)flen, fmt); 971 } 972 973 /* 974 * If a subdatum was specified but not supported, or an output 975 * format was selected that is not supported, that's an error. 976 */ 977 if (hilo != 0 || (ofmt & formats) == 0) 978 errx(1, "%.*s: bad format", (int)flen, fmt); 979 980 /* 981 * Assemble the format string for passing to printf(3). 982 */ 983 lfmt[0] = '\0'; 984 (void)strcat(lfmt, "%"); 985 if (flags & FLAG_POUND) 986 (void)strcat(lfmt, "#"); 987 if (flags & FLAG_SPACE) 988 (void)strcat(lfmt, " "); 989 if (flags & FLAG_PLUS) 990 (void)strcat(lfmt, "+"); 991 if (flags & FLAG_MINUS) 992 (void)strcat(lfmt, "-"); 993 if (flags & FLAG_ZERO) 994 (void)strcat(lfmt, "0"); 995 996 /* 997 * Only the timespecs support the FLOAT output format, and that 998 * requires work that differs from the other formats. 999 */ 1000 if (ofmt == FMTF_FLOAT) { 1001 /* 1002 * Nothing after the decimal point, so just print seconds. 1003 */ 1004 if (prec == 0) { 1005 if (size != -1) { 1006 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1007 (void)strcat(lfmt, tmp); 1008 } 1009 (void)strcat(lfmt, "lld"); 1010 return (snprintf(buf, blen, lfmt, 1011 (long long)secs)); 1012 } 1013 1014 /* 1015 * Unspecified precision gets all the precision we have: 1016 * 9 digits. 1017 */ 1018 if (prec == -1) 1019 prec = 9; 1020 1021 /* 1022 * Adjust the size for the decimal point and the digits 1023 * that will follow. 1024 */ 1025 size -= prec + 1; 1026 1027 /* 1028 * Any leftover size that's legitimate will be used. 1029 */ 1030 if (size > 0) { 1031 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1032 (void)strcat(lfmt, tmp); 1033 } 1034 /* Seconds: time_t cast to long long. */ 1035 (void)strcat(lfmt, "lld"); 1036 1037 /* 1038 * The stuff after the decimal point always needs zero 1039 * filling. 1040 */ 1041 (void)strcat(lfmt, ".%0"); 1042 1043 /* 1044 * We can "print" at most nine digits of precision. The 1045 * rest we will pad on at the end. 1046 * 1047 * Nanoseconds: long. 1048 */ 1049 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec); 1050 (void)strcat(lfmt, tmp); 1051 1052 /* 1053 * For precision of less that nine digits, trim off the 1054 * less significant figures. 1055 */ 1056 for (; prec < 9; prec++) 1057 nsecs /= 10; 1058 1059 /* 1060 * Use the format, and then tack on any zeroes that 1061 * might be required to make up the requested precision. 1062 */ 1063 l = snprintf(buf, blen, lfmt, (long long)secs, nsecs); 1064 for (; prec > 9 && l < (int)blen; prec--, l++) 1065 (void)strcat(buf, "0"); 1066 return (l); 1067 } 1068 1069 /* 1070 * Add on size and precision, if specified, to the format. 1071 */ 1072 if (size != -1) { 1073 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1074 (void)strcat(lfmt, tmp); 1075 } 1076 if (prec != -1) { 1077 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 1078 (void)strcat(lfmt, tmp); 1079 } 1080 1081 /* 1082 * String output uses the temporary sdata. 1083 */ 1084 if (ofmt == FMTF_STRING) { 1085 if (sdata == NULL) 1086 errx(1, "%.*s: bad format", (int)flen, fmt); 1087 (void)strcat(lfmt, "s"); 1088 return (snprintf(buf, blen, lfmt, sdata)); 1089 } 1090 1091 /* 1092 * Ensure that sign extension does not cause bad looking output 1093 * for some forms. 1094 */ 1095 if (small && ofmt != FMTF_DECIMAL) 1096 data = (u_int32_t)data; 1097 1098 /* 1099 * The four "numeric" output forms. 1100 */ 1101 (void)strcat(lfmt, "ll"); 1102 switch (ofmt) { 1103 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 1104 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 1105 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 1106 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 1107 } 1108 1109 /* 1110 * shift and round to nearest for kilobytes, megabytes, 1111 * gigabytes. 1112 */ 1113 if (shift > 0) { 1114 data >>= (shift - 1); 1115 data++; 1116 data >>= 1; 1117 } 1118 1119 return (snprintf(buf, blen, lfmt, data)); 1120 } 1121
Indexes created Tue Sep 23 14:10:03 GMT 2025