stat.c revision 1.36.2.1
1 /* $NetBSD: stat.c,v 1.36.2.1 2013/01/16 05:34:07 yamt 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 #endif 35 36 #include <sys/cdefs.h> 37 #if !defined(lint) 38 __RCSID("$NetBSD: stat.c,v 1.36.2.1 2013/01/16 05:34:07 yamt 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 #include <vis.h> 65 66 #if HAVE_STRUCT_STAT_ST_FLAGS 67 #define DEF_F "%#Xf " 68 #define RAW_F "%f " 69 #define SHELL_F " st_flags=%f" 70 #else /* HAVE_STRUCT_STAT_ST_FLAGS */ 71 #define DEF_F 72 #define RAW_F 73 #define SHELL_F 74 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 75 76 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 77 #define DEF_B "\"%SB\" " 78 #define RAW_B "%B " 79 #define SHELL_B "st_birthtime=%SB " 80 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 81 #define DEF_B 82 #define RAW_B 83 #define SHELL_B 84 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 85 86 #if HAVE_STRUCT_STAT_ST_ATIM 87 #define st_atimespec st_atim 88 #define st_ctimespec st_ctim 89 #define st_mtimespec st_mtim 90 #endif /* HAVE_STRUCT_STAT_ST_ATIM */ 91 92 #define DEF_FORMAT \ 93 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \ 94 "%k %b " DEF_F "%N" 95 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \ 96 "%k %b " RAW_F "%N" 97 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 98 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 99 #define SHELL_FORMAT \ 100 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 101 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 102 "st_atime=%Sa st_mtime=%Sm st_ctime=%Sc " SHELL_B \ 103 "st_blksize=%k st_blocks=%b" SHELL_F 104 #define LINUX_FORMAT \ 105 " File: \"%N\"%n" \ 106 " Size: %-11z FileType: %HT%n" \ 107 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 108 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 109 "Access: %Sa%n" \ 110 "Modify: %Sm%n" \ 111 "Change: %Sc" 112 113 #define TIME_FORMAT "%b %e %T %Y" 114 115 #define FLAG_POUND 0x01 116 #define FLAG_SPACE 0x02 117 #define FLAG_PLUS 0x04 118 #define FLAG_ZERO 0x08 119 #define FLAG_MINUS 0x10 120 121 /* 122 * These format characters must all be unique, except the magic one. 123 */ 124 #define FMT_MAGIC '%' 125 #define FMT_DOT '.' 126 127 #define SIMPLE_NEWLINE 'n' 128 #define SIMPLE_TAB 't' 129 #define SIMPLE_PERCENT '%' 130 #define SIMPLE_NUMBER '@' 131 132 #define FMT_POUND '#' 133 #define FMT_SPACE ' ' 134 #define FMT_PLUS '+' 135 #define FMT_ZERO '0' 136 #define FMT_MINUS '-' 137 138 #define FMT_DECIMAL 'D' 139 #define FMT_OCTAL 'O' 140 #define FMT_UNSIGNED 'U' 141 #define FMT_HEX 'X' 142 #define FMT_FLOAT 'F' 143 #define FMT_STRING 'S' 144 145 #define FMTF_DECIMAL 0x01 146 #define FMTF_OCTAL 0x02 147 #define FMTF_UNSIGNED 0x04 148 #define FMTF_HEX 0x08 149 #define FMTF_FLOAT 0x10 150 #define FMTF_STRING 0x20 151 152 #define HIGH_PIECE 'H' 153 #define MIDDLE_PIECE 'M' 154 #define LOW_PIECE 'L' 155 156 #define SHOW_realpath 'R' 157 #define SHOW_st_dev 'd' 158 #define SHOW_st_ino 'i' 159 #define SHOW_st_mode 'p' 160 #define SHOW_st_nlink 'l' 161 #define SHOW_st_uid 'u' 162 #define SHOW_st_gid 'g' 163 #define SHOW_st_rdev 'r' 164 #define SHOW_st_atime 'a' 165 #define SHOW_st_mtime 'm' 166 #define SHOW_st_ctime 'c' 167 #define SHOW_st_btime 'B' 168 #define SHOW_st_size 'z' 169 #define SHOW_st_blocks 'b' 170 #define SHOW_st_blksize 'k' 171 #define SHOW_st_flags 'f' 172 #define SHOW_st_gen 'v' 173 #define SHOW_symlink 'Y' 174 #define SHOW_filetype 'T' 175 #define SHOW_filename 'N' 176 #define SHOW_sizerdev 'Z' 177 178 static void usage(const char *) __dead; 179 static void output(const struct stat *, const char *, 180 const char *, int, int, int); 181 static int format1(const struct stat *, /* stat info */ 182 const char *, /* the file name */ 183 const char *, int, /* the format string itself */ 184 char *, size_t, /* a place to put the output */ 185 int, int, int, int, /* the parsed format */ 186 int, int, int); 187 188 static const char *timefmt; 189 static int linkfail; 190 191 #define addchar(s, c, nl) \ 192 do { \ 193 (void)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, fn, nonl, quiet; 203 const char *statfmt, *options, *synopsis; 204 205 am_readlink = 0; 206 lsF = 0; 207 fmtchar = '\0'; 208 usestat = 0; 209 nonl = 0; 210 quiet = 0; 211 linkfail = 0; 212 statfmt = NULL; 213 timefmt = NULL; 214 215 setprogname(argv[0]); 216 217 if (strcmp(getprogname(), "readlink") == 0) { 218 am_readlink = 1; 219 options = "fnqsv"; 220 synopsis = "[-fnqsv] [file ...]"; 221 statfmt = "%Y"; 222 fmtchar = 'f'; 223 quiet = 1; 224 } else { 225 options = "f:FlLnqrst:x"; 226 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 227 } 228 229 while ((ch = getopt(argc, argv, options)) != -1) 230 switch (ch) { 231 case 'F': 232 lsF = 1; 233 break; 234 case 'L': 235 usestat = 1; 236 break; 237 case 'n': 238 nonl = 1; 239 break; 240 case 'q': 241 quiet = 1; 242 break; 243 case 'f': 244 if (am_readlink) { 245 statfmt = "%R"; 246 break; 247 } 248 statfmt = optarg; 249 /* FALLTHROUGH */ 250 case 'l': 251 case 'r': 252 case 's': 253 if (am_readlink) { 254 quiet = 1; 255 break; 256 } 257 /*FALLTHROUGH*/ 258 case 'x': 259 if (fmtchar != 0) 260 errx(1, "can't use format '%c' with '%c'", 261 fmtchar, ch); 262 fmtchar = ch; 263 break; 264 case 't': 265 timefmt = optarg; 266 break; 267 case 'v': 268 quiet = 0; 269 break; 270 default: 271 usage(synopsis); 272 } 273 274 argc -= optind; 275 argv += optind; 276 fn = 1; 277 278 if (fmtchar == '\0') { 279 if (lsF) 280 fmtchar = 'l'; 281 else { 282 fmtchar = 'f'; 283 statfmt = DEF_FORMAT; 284 } 285 } 286 287 if (lsF && fmtchar != 'l') 288 errx(1, "can't use format '%c' with -F", fmtchar); 289 290 switch (fmtchar) { 291 case 'f': 292 /* statfmt already set */ 293 break; 294 case 'l': 295 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 296 break; 297 case 'r': 298 statfmt = RAW_FORMAT; 299 break; 300 case 's': 301 statfmt = SHELL_FORMAT; 302 if (timefmt == NULL) 303 timefmt = "%s"; 304 break; 305 case 'x': 306 statfmt = LINUX_FORMAT; 307 if (timefmt == NULL) 308 timefmt = "%c"; 309 break; 310 default: 311 usage(synopsis); 312 /*NOTREACHED*/ 313 } 314 315 if (timefmt == NULL) 316 timefmt = TIME_FORMAT; 317 318 errs = 0; 319 do { 320 if (argc == 0) 321 rc = fstat(STDIN_FILENO, &st); 322 else if (usestat) { 323 /* 324 * Try stat() and if it fails, fall back to 325 * lstat() just in case we're examining a 326 * broken symlink. 327 */ 328 if ((rc = stat(argv[0], &st)) == -1 && 329 errno == ENOENT && 330 (rc = lstat(argv[0], &st)) == -1) 331 errno = ENOENT; 332 } 333 else 334 rc = lstat(argv[0], &st); 335 336 if (rc == -1) { 337 errs = 1; 338 linkfail = 1; 339 if (!quiet) 340 warn("%s: %s", 341 argc == 0 ? "(stdin)" : argv[0], 342 usestat ? "stat" : "lstat"); 343 } 344 else 345 output(&st, argv[0], statfmt, fn, nonl, quiet); 346 347 argv++; 348 argc--; 349 fn++; 350 } while (argc > 0); 351 352 return (am_readlink ? linkfail : errs); 353 } 354 355 static void 356 usage(const char *synopsis) 357 { 358 359 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 360 exit(1); 361 } 362 363 /* 364 * Parses a format string. 365 */ 366 static void 367 output(const struct stat *st, const char *file, 368 const char *statfmt, int fn, int nonl, int quiet) 369 { 370 int flags, size, prec, ofmt, hilo, what; 371 /* 372 * buf size is enough for an item of length PATH_MAX, 373 * multiplied by 4 for vis encoding, plus 4 for symlink 374 * " -> " prefix, plus 1 for \0 terminator. 375 */ 376 char buf[PATH_MAX * 4 + 4 + 1]; 377 const char *subfmt; 378 int nl, t, i; 379 380 nl = 1; 381 while (*statfmt != '\0') { 382 383 /* 384 * Non-format characters go straight out. 385 */ 386 if (*statfmt != FMT_MAGIC) { 387 addchar(stdout, *statfmt, &nl); 388 statfmt++; 389 continue; 390 } 391 392 /* 393 * The current format "substring" starts here, 394 * and then we skip the magic. 395 */ 396 subfmt = statfmt; 397 statfmt++; 398 399 /* 400 * Some simple one-character "formats". 401 */ 402 switch (*statfmt) { 403 case SIMPLE_NEWLINE: 404 addchar(stdout, '\n', &nl); 405 statfmt++; 406 continue; 407 case SIMPLE_TAB: 408 addchar(stdout, '\t', &nl); 409 statfmt++; 410 continue; 411 case SIMPLE_PERCENT: 412 addchar(stdout, '%', &nl); 413 statfmt++; 414 continue; 415 case SIMPLE_NUMBER: { 416 char num[12], *p; 417 418 snprintf(num, sizeof(num), "%d", fn); 419 for (p = &num[0]; *p; p++) 420 addchar(stdout, *p, &nl); 421 statfmt++; 422 continue; 423 } 424 } 425 426 /* 427 * This must be an actual format string. Format strings are 428 * similar to printf(3) formats up to a point, and are of 429 * the form: 430 * 431 * % required start of format 432 * [-# +0] opt. format characters 433 * size opt. field width 434 * . opt. decimal separator, followed by 435 * prec opt. precision 436 * fmt opt. output specifier (string, numeric, etc.) 437 * sub opt. sub field specifier (high, middle, low) 438 * datum required field specifier (size, mode, etc) 439 * 440 * Only the % and the datum selector are required. All data 441 * have reasonable default output forms. The "sub" specifier 442 * only applies to certain data (mode, dev, rdev, filetype). 443 * The symlink output defaults to STRING, yet will only emit 444 * the leading " -> " if STRING is explicitly specified. The 445 * sizerdev datum will generate rdev output for character or 446 * block devices, and size output for all others. 447 * For STRING output, the # format requests vis encoding. 448 */ 449 flags = 0; 450 do { 451 if (*statfmt == FMT_POUND) 452 flags |= FLAG_POUND; 453 else if (*statfmt == FMT_SPACE) 454 flags |= FLAG_SPACE; 455 else if (*statfmt == FMT_PLUS) 456 flags |= FLAG_PLUS; 457 else if (*statfmt == FMT_ZERO) 458 flags |= FLAG_ZERO; 459 else if (*statfmt == FMT_MINUS) 460 flags |= FLAG_MINUS; 461 else 462 break; 463 statfmt++; 464 } while (1/*CONSTCOND*/); 465 466 size = -1; 467 if (isdigit((unsigned)*statfmt)) { 468 size = 0; 469 while (isdigit((unsigned)*statfmt)) { 470 size = (size * 10) + (*statfmt - '0'); 471 statfmt++; 472 if (size < 0) 473 goto badfmt; 474 } 475 } 476 477 prec = -1; 478 if (*statfmt == FMT_DOT) { 479 statfmt++; 480 481 prec = 0; 482 while (isdigit((unsigned)*statfmt)) { 483 prec = (prec * 10) + (*statfmt - '0'); 484 statfmt++; 485 if (prec < 0) 486 goto badfmt; 487 } 488 } 489 490 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 491 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 492 switch (*statfmt) { 493 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 494 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 495 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 496 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 497 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 498 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 499 default: 500 ofmt = 0; 501 break; 502 } 503 504 switch (*statfmt) { 505 fmtcase(hilo, HIGH_PIECE); 506 fmtcase(hilo, MIDDLE_PIECE); 507 fmtcase(hilo, LOW_PIECE); 508 default: 509 hilo = 0; 510 break; 511 } 512 513 switch (*statfmt) { 514 fmtcase(what, SHOW_realpath); 515 fmtcase(what, SHOW_st_dev); 516 fmtcase(what, SHOW_st_ino); 517 fmtcase(what, SHOW_st_mode); 518 fmtcase(what, SHOW_st_nlink); 519 fmtcase(what, SHOW_st_uid); 520 fmtcase(what, SHOW_st_gid); 521 fmtcase(what, SHOW_st_rdev); 522 fmtcase(what, SHOW_st_atime); 523 fmtcase(what, SHOW_st_mtime); 524 fmtcase(what, SHOW_st_ctime); 525 fmtcase(what, SHOW_st_btime); 526 fmtcase(what, SHOW_st_size); 527 fmtcase(what, SHOW_st_blocks); 528 fmtcase(what, SHOW_st_blksize); 529 fmtcase(what, SHOW_st_flags); 530 fmtcase(what, SHOW_st_gen); 531 fmtcase(what, SHOW_symlink); 532 fmtcase(what, SHOW_filetype); 533 fmtcase(what, SHOW_filename); 534 fmtcase(what, SHOW_sizerdev); 535 default: 536 goto badfmt; 537 } 538 #undef fmtcasef 539 #undef fmtcase 540 541 t = format1(st, 542 file, 543 subfmt, statfmt - subfmt, 544 buf, sizeof(buf), 545 flags, size, prec, ofmt, hilo, what, quiet); 546 547 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++) 548 addchar(stdout, buf[i], &nl); 549 550 continue; 551 552 badfmt: 553 errx(1, "%.*s: bad format", 554 (int)(statfmt - subfmt + 1), subfmt); 555 } 556 557 if (!nl && !nonl) 558 (void)fputc('\n', stdout); 559 (void)fflush(stdout); 560 } 561 562 /* 563 * Arranges output according to a single parsed format substring. 564 */ 565 static int 566 format1(const struct stat *st, 567 const char *file, 568 const char *fmt, int flen, 569 char *buf, size_t blen, 570 int flags, int size, int prec, int ofmt, 571 int hilo, int what, int quiet) 572 { 573 u_int64_t data; 574 char *stmp, lfmt[24], tmp[20]; 575 const char *sdata; 576 char smode[12], sid[12], path[PATH_MAX + 4], visbuf[PATH_MAX * 4 + 4]; 577 struct passwd *pw; 578 struct group *gr; 579 struct tm *tm; 580 time_t secs; 581 long nsecs; 582 int l; 583 int formats; /* bitmap of allowed formats for this datum */ 584 int small; /* true if datum is a small integer */ 585 int gottime; /* true if secs and nsecs are valid */ 586 int shift; /* powers of 2 to scale numbers before printing */ 587 size_t prefixlen; /* length of constant prefix for string data */ 588 589 formats = 0; 590 small = 0; 591 gottime = 0; 592 secs = 0; 593 nsecs = 0; 594 shift = 0; 595 prefixlen = 0; 596 597 /* 598 * First, pick out the data and tweak it based on hilo or 599 * specified output format (symlink output only). 600 */ 601 switch (what) { 602 case SHOW_st_dev: 603 case SHOW_st_rdev: 604 small = (sizeof(st->st_dev) == 4); 605 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 606 #if HAVE_DEVNAME 607 sdata = (what == SHOW_st_dev) ? 608 devname(st->st_dev, S_IFBLK) : 609 devname(st->st_rdev, 610 S_ISCHR(st->st_mode) ? S_IFCHR : 611 S_ISBLK(st->st_mode) ? S_IFBLK : 612 0U); 613 if (sdata == NULL) 614 sdata = "???"; 615 #endif /* HAVE_DEVNAME */ 616 if (hilo == HIGH_PIECE) { 617 data = major(data); 618 hilo = 0; 619 } 620 else if (hilo == LOW_PIECE) { 621 data = minor((unsigned)data); 622 hilo = 0; 623 } 624 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 625 #if HAVE_DEVNAME 626 FMTF_STRING; 627 #else /* HAVE_DEVNAME */ 628 0; 629 #endif /* HAVE_DEVNAME */ 630 if (ofmt == 0) 631 ofmt = FMTF_UNSIGNED; 632 break; 633 case SHOW_st_ino: 634 small = (sizeof(st->st_ino) == 4); 635 data = st->st_ino; 636 sdata = NULL; 637 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 638 if (ofmt == 0) 639 ofmt = FMTF_UNSIGNED; 640 break; 641 case SHOW_st_mode: 642 small = (sizeof(st->st_mode) == 4); 643 data = st->st_mode; 644 strmode(st->st_mode, smode); 645 stmp = smode; 646 l = strlen(stmp); 647 if (stmp[l - 1] == ' ') 648 stmp[--l] = '\0'; 649 if (hilo == HIGH_PIECE) { 650 data >>= 12; 651 stmp += 1; 652 stmp[3] = '\0'; 653 hilo = 0; 654 } 655 else if (hilo == MIDDLE_PIECE) { 656 data = (data >> 9) & 07; 657 stmp += 4; 658 stmp[3] = '\0'; 659 hilo = 0; 660 } 661 else if (hilo == LOW_PIECE) { 662 data &= 0777; 663 stmp += 7; 664 stmp[3] = '\0'; 665 hilo = 0; 666 } 667 sdata = stmp; 668 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 669 FMTF_STRING; 670 if (ofmt == 0) 671 ofmt = FMTF_OCTAL; 672 break; 673 case SHOW_st_nlink: 674 small = (sizeof(st->st_dev) == 4); 675 data = st->st_nlink; 676 sdata = NULL; 677 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 678 if (ofmt == 0) 679 ofmt = FMTF_UNSIGNED; 680 break; 681 case SHOW_st_uid: 682 small = (sizeof(st->st_uid) == 4); 683 data = st->st_uid; 684 if ((pw = getpwuid(st->st_uid)) != NULL) 685 sdata = pw->pw_name; 686 else { 687 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 688 sdata = sid; 689 } 690 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 691 FMTF_STRING; 692 if (ofmt == 0) 693 ofmt = FMTF_UNSIGNED; 694 break; 695 case SHOW_st_gid: 696 small = (sizeof(st->st_gid) == 4); 697 data = st->st_gid; 698 if ((gr = getgrgid(st->st_gid)) != NULL) 699 sdata = gr->gr_name; 700 else { 701 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 702 sdata = sid; 703 } 704 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 705 FMTF_STRING; 706 if (ofmt == 0) 707 ofmt = FMTF_UNSIGNED; 708 break; 709 case SHOW_st_atime: 710 gottime = 1; 711 secs = st->st_atime; 712 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 713 nsecs = st->st_atimensec; 714 #endif 715 /* FALLTHROUGH */ 716 case SHOW_st_mtime: 717 if (!gottime) { 718 gottime = 1; 719 secs = st->st_mtime; 720 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 721 nsecs = st->st_mtimensec; 722 #endif 723 } 724 /* FALLTHROUGH */ 725 case SHOW_st_ctime: 726 if (!gottime) { 727 gottime = 1; 728 secs = st->st_ctime; 729 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 730 nsecs = st->st_ctimensec; 731 #endif 732 } 733 /* FALLTHROUGH */ 734 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 735 case SHOW_st_btime: 736 if (!gottime) { 737 gottime = 1; 738 secs = st->st_birthtime; 739 #if HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 740 nsecs = st->st_birthtimensec; 741 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */ 742 } 743 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 744 small = (sizeof(secs) == 4); 745 data = secs; 746 tm = localtime(&secs); 747 if (tm == NULL) { 748 secs = 0; 749 tm = localtime(&secs); 750 } 751 (void)strftime(path, sizeof(path), timefmt, tm); 752 sdata = path; 753 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 754 FMTF_FLOAT | FMTF_STRING; 755 if (ofmt == 0) 756 ofmt = FMTF_DECIMAL; 757 break; 758 case SHOW_st_size: 759 small = (sizeof(st->st_size) == 4); 760 data = st->st_size; 761 sdata = NULL; 762 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 763 if (ofmt == 0) 764 ofmt = FMTF_UNSIGNED; 765 switch (hilo) { 766 case HIGH_PIECE: 767 shift = 30; /* gigabytes */ 768 hilo = 0; 769 break; 770 case MIDDLE_PIECE: 771 shift = 20; /* megabytes */ 772 hilo = 0; 773 break; 774 case LOW_PIECE: 775 shift = 10; /* kilobytes */ 776 hilo = 0; 777 break; 778 } 779 break; 780 case SHOW_st_blocks: 781 small = (sizeof(st->st_blocks) == 4); 782 data = st->st_blocks; 783 sdata = NULL; 784 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 785 if (ofmt == 0) 786 ofmt = FMTF_UNSIGNED; 787 break; 788 case SHOW_st_blksize: 789 small = (sizeof(st->st_blksize) == 4); 790 data = st->st_blksize; 791 sdata = NULL; 792 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 793 if (ofmt == 0) 794 ofmt = FMTF_UNSIGNED; 795 break; 796 #if HAVE_STRUCT_STAT_ST_FLAGS 797 case SHOW_st_flags: 798 small = (sizeof(st->st_flags) == 4); 799 data = st->st_flags; 800 sdata = NULL; 801 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 802 if (ofmt == 0) 803 ofmt = FMTF_UNSIGNED; 804 break; 805 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 806 #if HAVE_STRUCT_STAT_ST_GEN 807 case SHOW_st_gen: 808 small = (sizeof(st->st_gen) == 4); 809 data = st->st_gen; 810 sdata = NULL; 811 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 812 if (ofmt == 0) 813 ofmt = FMTF_UNSIGNED; 814 break; 815 #endif /* HAVE_STRUCT_STAT_ST_GEN */ 816 case SHOW_realpath: 817 small = 0; 818 data = 0; 819 if (file == NULL) { 820 (void)strlcpy(path, "(stdin)", sizeof(path)); 821 sdata = path; 822 } else { 823 snprintf(path, sizeof(path), " -> "); 824 if (realpath(file, path + 4) == NULL) { 825 if (!quiet) 826 warn("realpath `%s'", file); 827 linkfail = 1; 828 l = 0; 829 path[0] = '\0'; 830 } 831 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 832 prefixlen = (ofmt == FMTF_STRING ? 4 : 0); 833 } 834 835 formats = FMTF_STRING; 836 if (ofmt == 0) 837 ofmt = FMTF_STRING; 838 break; 839 case SHOW_symlink: 840 small = 0; 841 data = 0; 842 if (S_ISLNK(st->st_mode)) { 843 snprintf(path, sizeof(path), " -> "); 844 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 845 if (l == -1) { 846 if (!quiet) 847 warn("readlink `%s'", file); 848 linkfail = 1; 849 l = 0; 850 path[0] = '\0'; 851 } 852 path[l + 4] = '\0'; 853 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 854 prefixlen = (ofmt == FMTF_STRING ? 4 : 0); 855 } 856 else { 857 linkfail = 1; 858 sdata = ""; 859 } 860 formats = FMTF_STRING; 861 if (ofmt == 0) 862 ofmt = FMTF_STRING; 863 break; 864 case SHOW_filetype: 865 small = 0; 866 data = 0; 867 sdata = ""; 868 if (hilo == 0 || hilo == LOW_PIECE) { 869 switch (st->st_mode & S_IFMT) { 870 case S_IFIFO: sdata = "|"; break; 871 case S_IFDIR: sdata = "/"; break; 872 case S_IFREG: 873 if (st->st_mode & 874 (S_IXUSR | S_IXGRP | S_IXOTH)) 875 sdata = "*"; 876 break; 877 case S_IFLNK: sdata = "@"; break; 878 #ifdef S_IFSOCK 879 case S_IFSOCK: sdata = "="; break; 880 #endif 881 #ifdef S_IFWHT 882 case S_IFWHT: sdata = "%"; break; 883 #endif /* S_IFWHT */ 884 #ifdef S_IFDOOR 885 case S_IFDOOR: sdata = ">"; break; 886 #endif /* S_IFDOOR */ 887 } 888 hilo = 0; 889 } 890 else if (hilo == HIGH_PIECE) { 891 switch (st->st_mode & S_IFMT) { 892 case S_IFIFO: sdata = "Fifo File"; break; 893 case S_IFCHR: sdata = "Character Device"; break; 894 case S_IFDIR: sdata = "Directory"; break; 895 case S_IFBLK: sdata = "Block Device"; break; 896 case S_IFREG: sdata = "Regular File"; break; 897 case S_IFLNK: sdata = "Symbolic Link"; break; 898 #ifdef S_IFSOCK 899 case S_IFSOCK: sdata = "Socket"; break; 900 #endif 901 #ifdef S_IFWHT 902 case S_IFWHT: sdata = "Whiteout File"; break; 903 #endif /* S_IFWHT */ 904 #ifdef S_IFDOOR 905 case S_IFDOOR: sdata = "Door"; break; 906 #endif /* S_IFDOOR */ 907 default: sdata = "???"; break; 908 } 909 hilo = 0; 910 } 911 formats = FMTF_STRING; 912 if (ofmt == 0) 913 ofmt = FMTF_STRING; 914 break; 915 case SHOW_filename: 916 small = 0; 917 data = 0; 918 if (file == NULL) { 919 (void)strlcpy(path, "(stdin)", sizeof(path)); 920 if (hilo == HIGH_PIECE || hilo == LOW_PIECE) 921 hilo = 0; 922 } 923 else if (hilo == 0) 924 (void)strlcpy(path, file, sizeof(path)); 925 else { 926 char *s; 927 (void)strlcpy(path, file, sizeof(path)); 928 s = strrchr(path, '/'); 929 if (s != NULL) { 930 /* trim off trailing /'s */ 931 while (s != path && 932 s[0] == '/' && s[1] == '\0') 933 *s-- = '\0'; 934 s = strrchr(path, '/'); 935 } 936 if (hilo == HIGH_PIECE) { 937 if (s == NULL) 938 (void)strlcpy(path, ".", sizeof(path)); 939 else { 940 while (s != path && s[0] == '/') 941 *s-- = '\0'; 942 } 943 hilo = 0; 944 } 945 else if (hilo == LOW_PIECE) { 946 if (s != NULL && s[1] != '\0') 947 (void)strlcpy(path, s + 1, 948 sizeof(path)); 949 hilo = 0; 950 } 951 } 952 sdata = path; 953 formats = FMTF_STRING; 954 if (ofmt == 0) 955 ofmt = FMTF_STRING; 956 break; 957 case SHOW_sizerdev: 958 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 959 char majdev[20], mindev[20]; 960 int l1, l2; 961 962 l1 = format1(st, 963 file, 964 fmt, flen, 965 majdev, sizeof(majdev), 966 flags, size, prec, 967 ofmt, HIGH_PIECE, SHOW_st_rdev, quiet); 968 l2 = format1(st, 969 file, 970 fmt, flen, 971 mindev, sizeof(mindev), 972 flags, size, prec, 973 ofmt, LOW_PIECE, SHOW_st_rdev, quiet); 974 return (snprintf(buf, blen, "%.*s,%.*s", 975 l1, majdev, l2, mindev)); 976 } 977 else { 978 return (format1(st, 979 file, 980 fmt, flen, 981 buf, blen, 982 flags, size, prec, 983 ofmt, 0, SHOW_st_size, quiet)); 984 } 985 /*NOTREACHED*/ 986 default: 987 errx(1, "%.*s: bad format", (int)flen, fmt); 988 } 989 990 /* 991 * If a subdatum was specified but not supported, or an output 992 * format was selected that is not supported, that's an error. 993 */ 994 if (hilo != 0 || (ofmt & formats) == 0) 995 errx(1, "%.*s: bad format", (int)flen, fmt); 996 997 /* 998 * FLAG_POUND with FMTF_STRING means use vis(3) encoding. 999 * First prefixlen chars are not encoded. 1000 */ 1001 if ((flags & FLAG_POUND) != 0 && ofmt == FMTF_STRING) { 1002 flags &= !FLAG_POUND; 1003 strncpy(visbuf, sdata, prefixlen); 1004 strnvis(visbuf + prefixlen, sizeof(visbuf) - prefixlen, 1005 sdata + prefixlen, VIS_WHITE | VIS_OCTAL | VIS_CSTYLE); 1006 sdata = visbuf; 1007 } 1008 1009 /* 1010 * Assemble the format string for passing to printf(3). 1011 */ 1012 lfmt[0] = '\0'; 1013 (void)strcat(lfmt, "%"); 1014 if (flags & FLAG_POUND) 1015 (void)strcat(lfmt, "#"); 1016 if (flags & FLAG_SPACE) 1017 (void)strcat(lfmt, " "); 1018 if (flags & FLAG_PLUS) 1019 (void)strcat(lfmt, "+"); 1020 if (flags & FLAG_MINUS) 1021 (void)strcat(lfmt, "-"); 1022 if (flags & FLAG_ZERO) 1023 (void)strcat(lfmt, "0"); 1024 1025 /* 1026 * Only the timespecs support the FLOAT output format, and that 1027 * requires work that differs from the other formats. 1028 */ 1029 if (ofmt == FMTF_FLOAT) { 1030 /* 1031 * Nothing after the decimal point, so just print seconds. 1032 */ 1033 if (prec == 0) { 1034 if (size != -1) { 1035 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1036 (void)strcat(lfmt, tmp); 1037 } 1038 (void)strcat(lfmt, "lld"); 1039 return (snprintf(buf, blen, lfmt, 1040 (long long)secs)); 1041 } 1042 1043 /* 1044 * Unspecified precision gets all the precision we have: 1045 * 9 digits. 1046 */ 1047 if (prec == -1) 1048 prec = 9; 1049 1050 /* 1051 * Adjust the size for the decimal point and the digits 1052 * that will follow. 1053 */ 1054 size -= prec + 1; 1055 1056 /* 1057 * Any leftover size that's legitimate will be used. 1058 */ 1059 if (size > 0) { 1060 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1061 (void)strcat(lfmt, tmp); 1062 } 1063 /* Seconds: time_t cast to long long. */ 1064 (void)strcat(lfmt, "lld"); 1065 1066 /* 1067 * The stuff after the decimal point always needs zero 1068 * filling. 1069 */ 1070 (void)strcat(lfmt, ".%0"); 1071 1072 /* 1073 * We can "print" at most nine digits of precision. The 1074 * rest we will pad on at the end. 1075 * 1076 * Nanoseconds: long. 1077 */ 1078 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec); 1079 (void)strcat(lfmt, tmp); 1080 1081 /* 1082 * For precision of less that nine digits, trim off the 1083 * less significant figures. 1084 */ 1085 for (; prec < 9; prec++) 1086 nsecs /= 10; 1087 1088 /* 1089 * Use the format, and then tack on any zeroes that 1090 * might be required to make up the requested precision. 1091 */ 1092 l = snprintf(buf, blen, lfmt, (long long)secs, nsecs); 1093 for (; prec > 9 && l < (int)blen; prec--, l++) 1094 (void)strcat(buf, "0"); 1095 return (l); 1096 } 1097 1098 /* 1099 * Add on size and precision, if specified, to the format. 1100 */ 1101 if (size != -1) { 1102 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1103 (void)strcat(lfmt, tmp); 1104 } 1105 if (prec != -1) { 1106 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 1107 (void)strcat(lfmt, tmp); 1108 } 1109 1110 /* 1111 * String output uses the temporary sdata. 1112 */ 1113 if (ofmt == FMTF_STRING) { 1114 if (sdata == NULL) 1115 errx(1, "%.*s: bad format", (int)flen, fmt); 1116 (void)strcat(lfmt, "s"); 1117 return (snprintf(buf, blen, lfmt, sdata)); 1118 } 1119 1120 /* 1121 * Ensure that sign extension does not cause bad looking output 1122 * for some forms. 1123 */ 1124 if (small && ofmt != FMTF_DECIMAL) 1125 data = (u_int32_t)data; 1126 1127 /* 1128 * The four "numeric" output forms. 1129 */ 1130 (void)strcat(lfmt, "ll"); 1131 switch (ofmt) { 1132 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 1133 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 1134 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 1135 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 1136 } 1137 1138 /* 1139 * shift and round to nearest for kilobytes, megabytes, 1140 * gigabytes. 1141 */ 1142 if (shift > 0) { 1143 data >>= (shift - 1); 1144 data++; 1145 data >>= 1; 1146 } 1147 1148 return (snprintf(buf, blen, lfmt, data)); 1149 } 1150
Indexes created Sat Nov 01 05:10:12 GMT 2025