stat.c revision 1.38
1 /* $NetBSD: stat.c,v 1.38 2013/01/03 13:28:41 dsl 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 1.38 2013/01/03 13:28:41 dsl 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 #else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 83 #define DEF_B 84 #define RAW_B 85 #define SHELL_B 86 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 87 88 #if HAVE_STRUCT_STAT_ST_ATIM 89 #define st_atimespec st_atim 90 #define st_ctimespec st_ctim 91 #define st_mtimespec st_mtim 92 #endif /* HAVE_STRUCT_STAT_ST_ATIM */ 93 94 #define DEF_FORMAT \ 95 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \ 96 "%k %b " DEF_F "%N" 97 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \ 98 "%k %b " RAW_F "%N" 99 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 100 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 101 #define SHELL_FORMAT \ 102 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 103 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 104 "st_atime=%Sa st_mtime=%Sm st_ctime=%Sc " SHELL_B \ 105 "st_blksize=%k st_blocks=%b" SHELL_F 106 #define LINUX_FORMAT \ 107 " File: \"%N\"%n" \ 108 " Size: %-11z FileType: %HT%n" \ 109 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 110 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 111 "Access: %Sa%n" \ 112 "Modify: %Sm%n" \ 113 "Change: %Sc" 114 115 #define TIME_FORMAT "%b %e %T %Y" 116 117 #define FLAG_POUND 0x01 118 #define FLAG_SPACE 0x02 119 #define FLAG_PLUS 0x04 120 #define FLAG_ZERO 0x08 121 #define FLAG_MINUS 0x10 122 123 /* 124 * These format characters must all be unique, except the magic one. 125 */ 126 #define FMT_MAGIC '%' 127 #define FMT_DOT '.' 128 129 #define SIMPLE_NEWLINE 'n' 130 #define SIMPLE_TAB 't' 131 #define SIMPLE_PERCENT '%' 132 #define SIMPLE_NUMBER '@' 133 134 #define FMT_POUND '#' 135 #define FMT_SPACE ' ' 136 #define FMT_PLUS '+' 137 #define FMT_ZERO '0' 138 #define FMT_MINUS '-' 139 140 #define FMT_DECIMAL 'D' 141 #define FMT_OCTAL 'O' 142 #define FMT_UNSIGNED 'U' 143 #define FMT_HEX 'X' 144 #define FMT_FLOAT 'F' 145 #define FMT_STRING 'S' 146 147 #define FMTF_DECIMAL 0x01 148 #define FMTF_OCTAL 0x02 149 #define FMTF_UNSIGNED 0x04 150 #define FMTF_HEX 0x08 151 #define FMTF_FLOAT 0x10 152 #define FMTF_STRING 0x20 153 154 #define HIGH_PIECE 'H' 155 #define MIDDLE_PIECE 'M' 156 #define LOW_PIECE 'L' 157 158 #define SHOW_realpath 'R' 159 #define SHOW_st_dev 'd' 160 #define SHOW_st_ino 'i' 161 #define SHOW_st_mode 'p' 162 #define SHOW_st_nlink 'l' 163 #define SHOW_st_uid 'u' 164 #define SHOW_st_gid 'g' 165 #define SHOW_st_rdev 'r' 166 #define SHOW_st_atime 'a' 167 #define SHOW_st_mtime 'm' 168 #define SHOW_st_ctime 'c' 169 #define SHOW_st_btime 'B' 170 #define SHOW_st_size 'z' 171 #define SHOW_st_blocks 'b' 172 #define SHOW_st_blksize 'k' 173 #define SHOW_st_flags 'f' 174 #define SHOW_st_gen 'v' 175 #define SHOW_symlink 'Y' 176 #define SHOW_filetype 'T' 177 #define SHOW_filename 'N' 178 #define SHOW_sizerdev 'Z' 179 180 static void usage(const char *) __dead; 181 static void output(const struct stat *, const char *, 182 const char *, int, int, int); 183 static int format1(const struct stat *, /* stat info */ 184 const char *, /* the file name */ 185 const char *, int, /* the format string itself */ 186 char *, size_t, /* a place to put the output */ 187 int, int, int, int, /* the parsed format */ 188 int, int, int); 189 190 static const char *timefmt; 191 static int linkfail; 192 193 #define addchar(s, c, nl) \ 194 do { \ 195 (void)fputc((c), (s)); \ 196 (*nl) = ((c) == '\n'); \ 197 } while (0/*CONSTCOND*/) 198 199 int 200 main(int argc, char *argv[]) 201 { 202 struct stat st; 203 int ch, rc, errs, am_readlink; 204 int lsF, fmtchar, usestat, fn, nonl, quiet; 205 const char *statfmt, *options, *synopsis; 206 207 am_readlink = 0; 208 lsF = 0; 209 fmtchar = '\0'; 210 usestat = 0; 211 nonl = 0; 212 quiet = 0; 213 linkfail = 0; 214 statfmt = NULL; 215 timefmt = NULL; 216 217 setprogname(argv[0]); 218 219 if (strcmp(getprogname(), "readlink") == 0) { 220 am_readlink = 1; 221 options = "fnqsv"; 222 synopsis = "[-fnqsv] [file ...]"; 223 statfmt = "%Y"; 224 fmtchar = 'f'; 225 quiet = 1; 226 } else { 227 options = "f:FlLnqrst:x"; 228 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 229 } 230 231 while ((ch = getopt(argc, argv, options)) != -1) 232 switch (ch) { 233 case 'F': 234 lsF = 1; 235 break; 236 case 'L': 237 usestat = 1; 238 break; 239 case 'n': 240 nonl = 1; 241 break; 242 case 'q': 243 quiet = 1; 244 break; 245 case 'f': 246 if (am_readlink) { 247 statfmt = "%R"; 248 break; 249 } 250 statfmt = optarg; 251 /* FALLTHROUGH */ 252 case 'l': 253 case 'r': 254 case 's': 255 if (am_readlink) { 256 quiet = 1; 257 break; 258 } 259 /*FALLTHROUGH*/ 260 case 'x': 261 if (fmtchar != 0) 262 errx(1, "can't use format '%c' with '%c'", 263 fmtchar, ch); 264 fmtchar = ch; 265 break; 266 case 't': 267 timefmt = optarg; 268 break; 269 case 'v': 270 quiet = 0; 271 break; 272 default: 273 usage(synopsis); 274 } 275 276 argc -= optind; 277 argv += optind; 278 fn = 1; 279 280 if (fmtchar == '\0') { 281 if (lsF) 282 fmtchar = 'l'; 283 else { 284 fmtchar = 'f'; 285 statfmt = DEF_FORMAT; 286 } 287 } 288 289 if (lsF && fmtchar != 'l') 290 errx(1, "can't use format '%c' with -F", fmtchar); 291 292 switch (fmtchar) { 293 case 'f': 294 /* statfmt already set */ 295 break; 296 case 'l': 297 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 298 break; 299 case 'r': 300 statfmt = RAW_FORMAT; 301 break; 302 case 's': 303 statfmt = SHELL_FORMAT; 304 if (timefmt == NULL) 305 timefmt = "%s"; 306 break; 307 case 'x': 308 statfmt = LINUX_FORMAT; 309 if (timefmt == NULL) 310 timefmt = "%c"; 311 break; 312 default: 313 usage(synopsis); 314 /*NOTREACHED*/ 315 } 316 317 if (timefmt == NULL) 318 timefmt = TIME_FORMAT; 319 320 errs = 0; 321 do { 322 if (argc == 0) 323 rc = fstat(STDIN_FILENO, &st); 324 else if (usestat) { 325 /* 326 * Try stat() and if it fails, fall back to 327 * lstat() just in case we're examining a 328 * broken symlink. 329 */ 330 if ((rc = stat(argv[0], &st)) == -1 && 331 errno == ENOENT && 332 (rc = lstat(argv[0], &st)) == -1) 333 errno = ENOENT; 334 } 335 else 336 rc = lstat(argv[0], &st); 337 338 if (rc == -1) { 339 errs = 1; 340 linkfail = 1; 341 if (!quiet) 342 warn("%s: %s", 343 argc == 0 ? "(stdin)" : argv[0], 344 usestat ? "stat" : "lstat"); 345 } 346 else 347 output(&st, argv[0], statfmt, fn, nonl, quiet); 348 349 argv++; 350 argc--; 351 fn++; 352 } while (argc > 0); 353 354 return (am_readlink ? linkfail : errs); 355 } 356 357 static void 358 usage(const char *synopsis) 359 { 360 361 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 362 exit(1); 363 } 364 365 /* 366 * Parses a format string. 367 */ 368 static void 369 output(const struct stat *st, const char *file, 370 const char *statfmt, int fn, int nonl, int quiet) 371 { 372 int flags, size, prec, ofmt, hilo, what; 373 /* 374 * buf size is enough for an item of length PATH_MAX, 375 * multiplied by 4 for vis encoding, plus 4 for symlink 376 * " -> " prefix, plus 1 for \0 terminator. 377 */ 378 char buf[PATH_MAX * 4 + 4 + 1]; 379 const char *subfmt; 380 int nl, t, i; 381 382 nl = 1; 383 while (*statfmt != '\0') { 384 385 /* 386 * Non-format characters go straight out. 387 */ 388 if (*statfmt != FMT_MAGIC) { 389 addchar(stdout, *statfmt, &nl); 390 statfmt++; 391 continue; 392 } 393 394 /* 395 * The current format "substring" starts here, 396 * and then we skip the magic. 397 */ 398 subfmt = statfmt; 399 statfmt++; 400 401 /* 402 * Some simple one-character "formats". 403 */ 404 switch (*statfmt) { 405 case SIMPLE_NEWLINE: 406 addchar(stdout, '\n', &nl); 407 statfmt++; 408 continue; 409 case SIMPLE_TAB: 410 addchar(stdout, '\t', &nl); 411 statfmt++; 412 continue; 413 case SIMPLE_PERCENT: 414 addchar(stdout, '%', &nl); 415 statfmt++; 416 continue; 417 case SIMPLE_NUMBER: { 418 char num[12], *p; 419 420 snprintf(num, sizeof(num), "%d", fn); 421 for (p = &num[0]; *p; p++) 422 addchar(stdout, *p, &nl); 423 statfmt++; 424 continue; 425 } 426 } 427 428 /* 429 * This must be an actual format string. Format strings are 430 * similar to printf(3) formats up to a point, and are of 431 * the form: 432 * 433 * % required start of format 434 * [-# +0] opt. format characters 435 * size opt. field width 436 * . opt. decimal separator, followed by 437 * prec opt. precision 438 * fmt opt. output specifier (string, numeric, etc.) 439 * sub opt. sub field specifier (high, middle, low) 440 * datum required field specifier (size, mode, etc) 441 * 442 * Only the % and the datum selector are required. All data 443 * have reasonable default output forms. The "sub" specifier 444 * only applies to certain data (mode, dev, rdev, filetype). 445 * The symlink output defaults to STRING, yet will only emit 446 * the leading " -> " if STRING is explicitly specified. The 447 * sizerdev datum will generate rdev output for character or 448 * block devices, and size output for all others. 449 * For STRING output, the # format requests vis encoding. 450 */ 451 flags = 0; 452 do { 453 if (*statfmt == FMT_POUND) 454 flags |= FLAG_POUND; 455 else if (*statfmt == FMT_SPACE) 456 flags |= FLAG_SPACE; 457 else if (*statfmt == FMT_PLUS) 458 flags |= FLAG_PLUS; 459 else if (*statfmt == FMT_ZERO) 460 flags |= FLAG_ZERO; 461 else if (*statfmt == FMT_MINUS) 462 flags |= FLAG_MINUS; 463 else 464 break; 465 statfmt++; 466 } while (1/*CONSTCOND*/); 467 468 size = -1; 469 if (isdigit((unsigned)*statfmt)) { 470 size = 0; 471 while (isdigit((unsigned)*statfmt)) { 472 size = (size * 10) + (*statfmt - '0'); 473 statfmt++; 474 if (size < 0) 475 goto badfmt; 476 } 477 } 478 479 prec = -1; 480 if (*statfmt == FMT_DOT) { 481 statfmt++; 482 483 prec = 0; 484 while (isdigit((unsigned)*statfmt)) { 485 prec = (prec * 10) + (*statfmt - '0'); 486 statfmt++; 487 if (prec < 0) 488 goto badfmt; 489 } 490 } 491 492 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 493 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 494 switch (*statfmt) { 495 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 496 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 497 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 498 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 499 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 500 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 501 default: 502 ofmt = 0; 503 break; 504 } 505 506 switch (*statfmt) { 507 fmtcase(hilo, HIGH_PIECE); 508 fmtcase(hilo, MIDDLE_PIECE); 509 fmtcase(hilo, LOW_PIECE); 510 default: 511 hilo = 0; 512 break; 513 } 514 515 switch (*statfmt) { 516 fmtcase(what, SHOW_realpath); 517 fmtcase(what, SHOW_st_dev); 518 fmtcase(what, SHOW_st_ino); 519 fmtcase(what, SHOW_st_mode); 520 fmtcase(what, SHOW_st_nlink); 521 fmtcase(what, SHOW_st_uid); 522 fmtcase(what, SHOW_st_gid); 523 fmtcase(what, SHOW_st_rdev); 524 fmtcase(what, SHOW_st_atime); 525 fmtcase(what, SHOW_st_mtime); 526 fmtcase(what, SHOW_st_ctime); 527 fmtcase(what, SHOW_st_btime); 528 fmtcase(what, SHOW_st_size); 529 fmtcase(what, SHOW_st_blocks); 530 fmtcase(what, SHOW_st_blksize); 531 fmtcase(what, SHOW_st_flags); 532 fmtcase(what, SHOW_st_gen); 533 fmtcase(what, SHOW_symlink); 534 fmtcase(what, SHOW_filetype); 535 fmtcase(what, SHOW_filename); 536 fmtcase(what, SHOW_sizerdev); 537 default: 538 goto badfmt; 539 } 540 #undef fmtcasef 541 #undef fmtcase 542 543 t = format1(st, 544 file, 545 subfmt, statfmt - subfmt, 546 buf, sizeof(buf), 547 flags, size, prec, ofmt, hilo, what, quiet); 548 549 for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++) 550 addchar(stdout, buf[i], &nl); 551 552 continue; 553 554 badfmt: 555 errx(1, "%.*s: bad format", 556 (int)(statfmt - subfmt + 1), subfmt); 557 } 558 559 if (!nl && !nonl) 560 (void)fputc('\n', stdout); 561 (void)fflush(stdout); 562 } 563 564 /* 565 * Arranges output according to a single parsed format substring. 566 */ 567 static int 568 format1(const struct stat *st, 569 const char *file, 570 const char *fmt, int flen, 571 char *buf, size_t blen, 572 int flags, int size, int prec, int ofmt, 573 int hilo, int what, int quiet) 574 { 575 u_int64_t data; 576 char *stmp, lfmt[24], tmp[20]; 577 const char *sdata; 578 char smode[12], sid[12], path[PATH_MAX + 4], visbuf[PATH_MAX * 4 + 4]; 579 struct passwd *pw; 580 struct group *gr; 581 struct tm *tm; 582 time_t secs; 583 long nsecs; 584 int l; 585 int formats; /* bitmap of allowed formats for this datum */ 586 int small; /* true if datum is a small integer */ 587 int gottime; /* true if secs and nsecs are valid */ 588 int shift; /* powers of 2 to scale numbers before printing */ 589 size_t prefixlen; /* length of constant prefix for string data */ 590 591 formats = 0; 592 small = 0; 593 gottime = 0; 594 secs = 0; 595 nsecs = 0; 596 shift = 0; 597 prefixlen = 0; 598 599 /* 600 * First, pick out the data and tweak it based on hilo or 601 * specified output format (symlink output only). 602 */ 603 switch (what) { 604 case SHOW_st_dev: 605 case SHOW_st_rdev: 606 small = (sizeof(st->st_dev) == 4); 607 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 608 #if HAVE_DEVNAME 609 sdata = (what == SHOW_st_dev) ? 610 devname(st->st_dev, S_IFBLK) : 611 devname(st->st_rdev, 612 S_ISCHR(st->st_mode) ? S_IFCHR : 613 S_ISBLK(st->st_mode) ? S_IFBLK : 614 0U); 615 if (sdata == NULL) 616 sdata = "???"; 617 #endif /* HAVE_DEVNAME */ 618 if (hilo == HIGH_PIECE) { 619 data = major(data); 620 hilo = 0; 621 } 622 else if (hilo == LOW_PIECE) { 623 data = minor((unsigned)data); 624 hilo = 0; 625 } 626 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 627 #if HAVE_DEVNAME 628 FMTF_STRING; 629 #else /* HAVE_DEVNAME */ 630 0; 631 #endif /* HAVE_DEVNAME */ 632 if (ofmt == 0) 633 ofmt = FMTF_UNSIGNED; 634 break; 635 case SHOW_st_ino: 636 small = (sizeof(st->st_ino) == 4); 637 data = st->st_ino; 638 sdata = NULL; 639 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 640 if (ofmt == 0) 641 ofmt = FMTF_UNSIGNED; 642 break; 643 case SHOW_st_mode: 644 small = (sizeof(st->st_mode) == 4); 645 data = st->st_mode; 646 strmode(st->st_mode, smode); 647 stmp = smode; 648 l = strlen(stmp); 649 if (stmp[l - 1] == ' ') 650 stmp[--l] = '\0'; 651 if (hilo == HIGH_PIECE) { 652 data >>= 12; 653 stmp += 1; 654 stmp[3] = '\0'; 655 hilo = 0; 656 } 657 else if (hilo == MIDDLE_PIECE) { 658 data = (data >> 9) & 07; 659 stmp += 4; 660 stmp[3] = '\0'; 661 hilo = 0; 662 } 663 else if (hilo == LOW_PIECE) { 664 data &= 0777; 665 stmp += 7; 666 stmp[3] = '\0'; 667 hilo = 0; 668 } 669 sdata = stmp; 670 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 671 FMTF_STRING; 672 if (ofmt == 0) 673 ofmt = FMTF_OCTAL; 674 break; 675 case SHOW_st_nlink: 676 small = (sizeof(st->st_dev) == 4); 677 data = st->st_nlink; 678 sdata = NULL; 679 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 680 if (ofmt == 0) 681 ofmt = FMTF_UNSIGNED; 682 break; 683 case SHOW_st_uid: 684 small = (sizeof(st->st_uid) == 4); 685 data = st->st_uid; 686 if ((pw = getpwuid(st->st_uid)) != NULL) 687 sdata = pw->pw_name; 688 else { 689 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 690 sdata = sid; 691 } 692 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 693 FMTF_STRING; 694 if (ofmt == 0) 695 ofmt = FMTF_UNSIGNED; 696 break; 697 case SHOW_st_gid: 698 small = (sizeof(st->st_gid) == 4); 699 data = st->st_gid; 700 if ((gr = getgrgid(st->st_gid)) != NULL) 701 sdata = gr->gr_name; 702 else { 703 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 704 sdata = sid; 705 } 706 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 707 FMTF_STRING; 708 if (ofmt == 0) 709 ofmt = FMTF_UNSIGNED; 710 break; 711 case SHOW_st_atime: 712 gottime = 1; 713 secs = st->st_atime; 714 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 715 nsecs = st->st_atimensec; 716 #endif 717 /* FALLTHROUGH */ 718 case SHOW_st_mtime: 719 if (!gottime) { 720 gottime = 1; 721 secs = st->st_mtime; 722 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 723 nsecs = st->st_mtimensec; 724 #endif 725 } 726 /* FALLTHROUGH */ 727 case SHOW_st_ctime: 728 if (!gottime) { 729 gottime = 1; 730 secs = st->st_ctime; 731 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 732 nsecs = st->st_ctimensec; 733 #endif 734 } 735 /* FALLTHROUGH */ 736 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 737 case SHOW_st_btime: 738 if (!gottime) { 739 gottime = 1; 740 secs = st->st_birthtime; 741 #if HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC 742 nsecs = st->st_birthtimensec; 743 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */ 744 } 745 #endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 746 small = (sizeof(secs) == 4); 747 data = secs; 748 tm = localtime(&secs); 749 if (tm == NULL) { 750 secs = 0; 751 tm = localtime(&secs); 752 } 753 (void)strftime(path, sizeof(path), timefmt, tm); 754 sdata = path; 755 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 756 FMTF_FLOAT | FMTF_STRING; 757 if (ofmt == 0) 758 ofmt = FMTF_DECIMAL; 759 break; 760 case SHOW_st_size: 761 small = (sizeof(st->st_size) == 4); 762 data = st->st_size; 763 sdata = NULL; 764 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 765 if (ofmt == 0) 766 ofmt = FMTF_UNSIGNED; 767 switch (hilo) { 768 case HIGH_PIECE: 769 shift = 30; /* gigabytes */ 770 hilo = 0; 771 break; 772 case MIDDLE_PIECE: 773 shift = 20; /* megabytes */ 774 hilo = 0; 775 break; 776 case LOW_PIECE: 777 shift = 10; /* kilobytes */ 778 hilo = 0; 779 break; 780 } 781 break; 782 case SHOW_st_blocks: 783 small = (sizeof(st->st_blocks) == 4); 784 data = st->st_blocks; 785 sdata = NULL; 786 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 787 if (ofmt == 0) 788 ofmt = FMTF_UNSIGNED; 789 break; 790 case SHOW_st_blksize: 791 small = (sizeof(st->st_blksize) == 4); 792 data = st->st_blksize; 793 sdata = NULL; 794 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 795 if (ofmt == 0) 796 ofmt = FMTF_UNSIGNED; 797 break; 798 #if HAVE_STRUCT_STAT_ST_FLAGS 799 case SHOW_st_flags: 800 small = (sizeof(st->st_flags) == 4); 801 data = st->st_flags; 802 sdata = NULL; 803 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 804 if (ofmt == 0) 805 ofmt = FMTF_UNSIGNED; 806 break; 807 #endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 808 #if HAVE_STRUCT_STAT_ST_GEN 809 case SHOW_st_gen: 810 small = (sizeof(st->st_gen) == 4); 811 data = st->st_gen; 812 sdata = NULL; 813 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 814 if (ofmt == 0) 815 ofmt = FMTF_UNSIGNED; 816 break; 817 #endif /* HAVE_STRUCT_STAT_ST_GEN */ 818 case SHOW_realpath: 819 small = 0; 820 data = 0; 821 if (file == NULL) { 822 (void)strlcpy(path, "(stdin)", sizeof(path)); 823 sdata = path; 824 } else { 825 snprintf(path, sizeof(path), " -> "); 826 if (realpath(file, path + 4) == NULL) { 827 if (!quiet) 828 warn("realpath `%s'", file); 829 linkfail = 1; 830 l = 0; 831 path[0] = '\0'; 832 } 833 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 834 prefixlen = (ofmt == FMTF_STRING ? 4 : 0); 835 } 836 837 formats = FMTF_STRING; 838 if (ofmt == 0) 839 ofmt = FMTF_STRING; 840 break; 841 case SHOW_symlink: 842 small = 0; 843 data = 0; 844 if (S_ISLNK(st->st_mode)) { 845 snprintf(path, sizeof(path), " -> "); 846 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 847 if (l == -1) { 848 if (!quiet) 849 warn("readlink `%s'", file); 850 linkfail = 1; 851 l = 0; 852 path[0] = '\0'; 853 } 854 path[l + 4] = '\0'; 855 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 856 prefixlen = (ofmt == FMTF_STRING ? 4 : 0); 857 } 858 else { 859 linkfail = 1; 860 sdata = ""; 861 } 862 formats = FMTF_STRING; 863 if (ofmt == 0) 864 ofmt = FMTF_STRING; 865 break; 866 case SHOW_filetype: 867 small = 0; 868 data = 0; 869 sdata = ""; 870 if (hilo == 0 || hilo == LOW_PIECE) { 871 switch (st->st_mode & S_IFMT) { 872 case S_IFIFO: sdata = "|"; break; 873 case S_IFDIR: sdata = "/"; break; 874 case S_IFREG: 875 if (st->st_mode & 876 (S_IXUSR | S_IXGRP | S_IXOTH)) 877 sdata = "*"; 878 break; 879 case S_IFLNK: sdata = "@"; break; 880 #ifdef S_IFSOCK 881 case S_IFSOCK: sdata = "="; break; 882 #endif 883 #ifdef S_IFWHT 884 case S_IFWHT: sdata = "%"; break; 885 #endif /* S_IFWHT */ 886 #ifdef S_IFDOOR 887 case S_IFDOOR: sdata = ">"; break; 888 #endif /* S_IFDOOR */ 889 } 890 hilo = 0; 891 } 892 else if (hilo == HIGH_PIECE) { 893 switch (st->st_mode & S_IFMT) { 894 case S_IFIFO: sdata = "Fifo File"; break; 895 case S_IFCHR: sdata = "Character Device"; break; 896 case S_IFDIR: sdata = "Directory"; break; 897 case S_IFBLK: sdata = "Block Device"; break; 898 case S_IFREG: sdata = "Regular File"; break; 899 case S_IFLNK: sdata = "Symbolic Link"; break; 900 #ifdef S_IFSOCK 901 case S_IFSOCK: sdata = "Socket"; break; 902 #endif 903 #ifdef S_IFWHT 904 case S_IFWHT: sdata = "Whiteout File"; break; 905 #endif /* S_IFWHT */ 906 #ifdef S_IFDOOR 907 case S_IFDOOR: sdata = "Door"; break; 908 #endif /* S_IFDOOR */ 909 default: sdata = "???"; break; 910 } 911 hilo = 0; 912 } 913 formats = FMTF_STRING; 914 if (ofmt == 0) 915 ofmt = FMTF_STRING; 916 break; 917 case SHOW_filename: 918 small = 0; 919 data = 0; 920 if (file == NULL) { 921 (void)strlcpy(path, "(stdin)", sizeof(path)); 922 if (hilo == HIGH_PIECE || hilo == LOW_PIECE) 923 hilo = 0; 924 } 925 else if (hilo == 0) 926 (void)strlcpy(path, file, sizeof(path)); 927 else { 928 char *s; 929 (void)strlcpy(path, file, sizeof(path)); 930 s = strrchr(path, '/'); 931 if (s != NULL) { 932 /* trim off trailing /'s */ 933 while (s != path && 934 s[0] == '/' && s[1] == '\0') 935 *s-- = '\0'; 936 s = strrchr(path, '/'); 937 } 938 if (hilo == HIGH_PIECE) { 939 if (s == NULL) 940 (void)strlcpy(path, ".", sizeof(path)); 941 else { 942 while (s != path && s[0] == '/') 943 *s-- = '\0'; 944 } 945 hilo = 0; 946 } 947 else if (hilo == LOW_PIECE) { 948 if (s != NULL && s[1] != '\0') 949 (void)strlcpy(path, s + 1, 950 sizeof(path)); 951 hilo = 0; 952 } 953 } 954 sdata = path; 955 formats = FMTF_STRING; 956 if (ofmt == 0) 957 ofmt = FMTF_STRING; 958 break; 959 case SHOW_sizerdev: 960 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 961 char majdev[20], mindev[20]; 962 int l1, l2; 963 964 l1 = format1(st, 965 file, 966 fmt, flen, 967 majdev, sizeof(majdev), 968 flags, size, prec, 969 ofmt, HIGH_PIECE, SHOW_st_rdev, quiet); 970 l2 = format1(st, 971 file, 972 fmt, flen, 973 mindev, sizeof(mindev), 974 flags, size, prec, 975 ofmt, LOW_PIECE, SHOW_st_rdev, quiet); 976 return (snprintf(buf, blen, "%.*s,%.*s", 977 l1, majdev, l2, mindev)); 978 } 979 else { 980 return (format1(st, 981 file, 982 fmt, flen, 983 buf, blen, 984 flags, size, prec, 985 ofmt, 0, SHOW_st_size, quiet)); 986 } 987 /*NOTREACHED*/ 988 default: 989 errx(1, "%.*s: bad format", (int)flen, fmt); 990 } 991 992 /* 993 * If a subdatum was specified but not supported, or an output 994 * format was selected that is not supported, that's an error. 995 */ 996 if (hilo != 0 || (ofmt & formats) == 0) 997 errx(1, "%.*s: bad format", (int)flen, fmt); 998 999 /* 1000 * FLAG_POUND with FMTF_STRING means use vis(3) encoding. 1001 * First prefixlen chars are not encoded. 1002 */ 1003 if ((flags & FLAG_POUND) != 0 && ofmt == FMTF_STRING) { 1004 flags &= !FLAG_POUND; 1005 strncpy(visbuf, sdata, prefixlen); 1006 strnvis(visbuf + prefixlen, sizeof(visbuf) - prefixlen, 1007 sdata + prefixlen, VIS_WHITE | VIS_OCTAL | VIS_CSTYLE); 1008 sdata = visbuf; 1009 } 1010 1011 /* 1012 * Assemble the format string for passing to printf(3). 1013 */ 1014 lfmt[0] = '\0'; 1015 (void)strcat(lfmt, "%"); 1016 if (flags & FLAG_POUND) 1017 (void)strcat(lfmt, "#"); 1018 if (flags & FLAG_SPACE) 1019 (void)strcat(lfmt, " "); 1020 if (flags & FLAG_PLUS) 1021 (void)strcat(lfmt, "+"); 1022 if (flags & FLAG_MINUS) 1023 (void)strcat(lfmt, "-"); 1024 if (flags & FLAG_ZERO) 1025 (void)strcat(lfmt, "0"); 1026 1027 /* 1028 * Only the timespecs support the FLOAT output format, and that 1029 * requires work that differs from the other formats. 1030 */ 1031 if (ofmt == FMTF_FLOAT) { 1032 /* 1033 * Nothing after the decimal point, so just print seconds. 1034 */ 1035 if (prec == 0) { 1036 if (size != -1) { 1037 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1038 (void)strcat(lfmt, tmp); 1039 } 1040 (void)strcat(lfmt, "lld"); 1041 return (snprintf(buf, blen, lfmt, 1042 (long long)secs)); 1043 } 1044 1045 /* 1046 * Unspecified precision gets all the precision we have: 1047 * 9 digits. 1048 */ 1049 if (prec == -1) 1050 prec = 9; 1051 1052 /* 1053 * Adjust the size for the decimal point and the digits 1054 * that will follow. 1055 */ 1056 size -= prec + 1; 1057 1058 /* 1059 * Any leftover size that's legitimate will be used. 1060 */ 1061 if (size > 0) { 1062 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1063 (void)strcat(lfmt, tmp); 1064 } 1065 /* Seconds: time_t cast to long long. */ 1066 (void)strcat(lfmt, "lld"); 1067 1068 /* 1069 * The stuff after the decimal point always needs zero 1070 * filling. 1071 */ 1072 (void)strcat(lfmt, ".%0"); 1073 1074 /* 1075 * We can "print" at most nine digits of precision. The 1076 * rest we will pad on at the end. 1077 * 1078 * Nanoseconds: long. 1079 */ 1080 (void)snprintf(tmp, sizeof(tmp), "%dld", prec > 9 ? 9 : prec); 1081 (void)strcat(lfmt, tmp); 1082 1083 /* 1084 * For precision of less that nine digits, trim off the 1085 * less significant figures. 1086 */ 1087 for (; prec < 9; prec++) 1088 nsecs /= 10; 1089 1090 /* 1091 * Use the format, and then tack on any zeroes that 1092 * might be required to make up the requested precision. 1093 */ 1094 l = snprintf(buf, blen, lfmt, (long long)secs, nsecs); 1095 for (; prec > 9 && l < (int)blen; prec--, l++) 1096 (void)strcat(buf, "0"); 1097 return (l); 1098 } 1099 1100 /* 1101 * Add on size and precision, if specified, to the format. 1102 */ 1103 if (size != -1) { 1104 (void)snprintf(tmp, sizeof(tmp), "%d", size); 1105 (void)strcat(lfmt, tmp); 1106 } 1107 if (prec != -1) { 1108 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 1109 (void)strcat(lfmt, tmp); 1110 } 1111 1112 /* 1113 * String output uses the temporary sdata. 1114 */ 1115 if (ofmt == FMTF_STRING) { 1116 if (sdata == NULL) 1117 errx(1, "%.*s: bad format", (int)flen, fmt); 1118 (void)strcat(lfmt, "s"); 1119 return (snprintf(buf, blen, lfmt, sdata)); 1120 } 1121 1122 /* 1123 * Ensure that sign extension does not cause bad looking output 1124 * for some forms. 1125 */ 1126 if (small && ofmt != FMTF_DECIMAL) 1127 data = (u_int32_t)data; 1128 1129 /* 1130 * The four "numeric" output forms. 1131 */ 1132 (void)strcat(lfmt, "ll"); 1133 switch (ofmt) { 1134 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 1135 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 1136 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 1137 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 1138 } 1139 1140 /* 1141 * shift and round to nearest for kilobytes, megabytes, 1142 * gigabytes. 1143 */ 1144 if (shift > 0) { 1145 data >>= (shift - 1); 1146 data++; 1147 data >>= 1; 1148 } 1149 1150 return (snprintf(buf, blen, lfmt, data)); 1151 } 1152
Indexes created Mon Sep 22 21:09:42 GMT 2025