stat.c revision 188481
1/* 2 * Copyright (c) 2002 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Andrew Brown. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the NetBSD 19 * Foundation, Inc. and its contributors. 20 * 4. Neither the name of The NetBSD Foundation nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37#include <sys/cdefs.h> 38#if 0 39#ifndef lint 40__RCSID("$NetBSD: stat.c,v 1.13 2003/07/25 03:21:17 atatat Exp $"); 41#endif 42#endif 43 44__FBSDID("$FreeBSD: head/usr.bin/stat/stat.c 188481 2009-02-11 10:50:26Z maxim $"); 45 46#if HAVE_CONFIG_H 47#include "config.h" 48#else /* HAVE_CONFIG_H */ 49#define HAVE_STRUCT_STAT_ST_FLAGS 1 50#define HAVE_STRUCT_STAT_ST_GEN 1 51#define HAVE_STRUCT_STAT_ST_BIRTHTIME 1 52#define HAVE_STRUCT_STAT_ST_MTIMENSEC 1 53#define HAVE_DEVNAME 1 54#endif /* HAVE_CONFIG_H */ 55 56#include <sys/types.h> 57#include <sys/stat.h> 58 59#include <ctype.h> 60#include <err.h> 61#include <grp.h> 62#include <limits.h> 63#include <pwd.h> 64#include <stdio.h> 65#include <stdlib.h> 66#include <string.h> 67#include <time.h> 68#include <unistd.h> 69 70#if HAVE_STRUCT_STAT_ST_FLAGS 71#define DEF_F "%#Xf " 72#define RAW_F "%f " 73#define SHELL_F " st_flags=%f" 74#else /* HAVE_STRUCT_STAT_ST_FLAGS */ 75#define DEF_F 76#define RAW_F 77#define SHELL_F 78#endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 79 80#if HAVE_STRUCT_STAT_ST_BIRTHTIME 81#define DEF_B "\"%SB\" " 82#define RAW_B "%B " 83#define SHELL_B "st_birthtime=%B " 84#else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 85#define DEF_B 86#define RAW_B 87#define SHELL_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=%a st_mtime=%m st_ctime=%c " SHELL_B \ 107 "st_blksize=%k st_blocks=%b" SHELL_F 108#define LINUX_FORMAT \ 109 " File: \"%N\"%n" \ 110 " Size: %-11z FileType: %HT%n" \ 111 " Mode: (%OMp%03OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 112 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 113 "Access: %Sa%n" \ 114 "Modify: %Sm%n" \ 115 "Change: %Sc" 116 117#define TIME_FORMAT "%b %e %T %Y" 118 119#define FLAG_POUND 0x01 120#define FLAG_SPACE 0x02 121#define FLAG_PLUS 0x04 122#define FLAG_ZERO 0x08 123#define FLAG_MINUS 0x10 124 125/* 126 * These format characters must all be unique, except the magic one. 127 */ 128#define FMT_MAGIC '%' 129#define FMT_DOT '.' 130 131#define SIMPLE_NEWLINE 'n' 132#define SIMPLE_TAB 't' 133#define SIMPLE_PERCENT '%' 134#define SIMPLE_NUMBER '@' 135 136#define FMT_POUND '#' 137#define FMT_SPACE ' ' 138#define FMT_PLUS '+' 139#define FMT_ZERO '0' 140#define FMT_MINUS '-' 141 142#define FMT_DECIMAL 'D' 143#define FMT_OCTAL 'O' 144#define FMT_UNSIGNED 'U' 145#define FMT_HEX 'X' 146#define FMT_FLOAT 'F' 147#define FMT_STRING 'S' 148 149#define FMTF_DECIMAL 0x01 150#define FMTF_OCTAL 0x02 151#define FMTF_UNSIGNED 0x04 152#define FMTF_HEX 0x08 153#define FMTF_FLOAT 0x10 154#define FMTF_STRING 0x20 155 156#define HIGH_PIECE 'H' 157#define MIDDLE_PIECE 'M' 158#define LOW_PIECE 'L' 159 160#define SHOW_st_dev 'd' 161#define SHOW_st_ino 'i' 162#define SHOW_st_mode 'p' 163#define SHOW_st_nlink 'l' 164#define SHOW_st_uid 'u' 165#define SHOW_st_gid 'g' 166#define SHOW_st_rdev 'r' 167#define SHOW_st_atime 'a' 168#define SHOW_st_mtime 'm' 169#define SHOW_st_ctime 'c' 170#define SHOW_st_btime 'B' 171#define SHOW_st_size 'z' 172#define SHOW_st_blocks 'b' 173#define SHOW_st_blksize 'k' 174#define SHOW_st_flags 'f' 175#define SHOW_st_gen 'v' 176#define SHOW_symlink 'Y' 177#define SHOW_filetype 'T' 178#define SHOW_filename 'N' 179#define SHOW_sizerdev 'Z' 180 181void usage(const char *); 182void output(const struct stat *, const char *, 183 const char *, int, int, int); 184int format1(const struct stat *, /* stat info */ 185 const char *, /* the file name */ 186 const char *, int, /* the format string itself */ 187 char *, size_t, /* a place to put the output */ 188 int, int, int, int, /* the parsed format */ 189 int, int); 190 191char *timefmt; 192int linkfail; 193 194#define addchar(s, c, nl) \ 195 do { \ 196 (void)fputc((c), (s)); \ 197 (*nl) = ((c) == '\n'); \ 198 } while (0/*CONSTCOND*/) 199 200int 201main(int argc, char *argv[]) 202{ 203 struct stat st; 204 int ch, rc, errs, am_readlink; 205 int lsF, fmtchar, usestat, fn, nonl, quiet; 206 char *statfmt, *options, *synopsis; 207 208 am_readlink = 0; 209 lsF = 0; 210 fmtchar = '\0'; 211 usestat = 0; 212 nonl = 0; 213 quiet = 0; 214 linkfail = 0; 215 statfmt = NULL; 216 timefmt = NULL; 217 218 if (strcmp(getprogname(), "readlink") == 0) { 219 am_readlink = 1; 220 options = "n"; 221 synopsis = "[-n] [file ...]"; 222 statfmt = "%Y"; 223 fmtchar = 'f'; 224 quiet = 1; 225 } else { 226 options = "f:FlLnqrst:x"; 227 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 228 } 229 230 while ((ch = getopt(argc, argv, options)) != -1) 231 switch (ch) { 232 case 'F': 233 lsF = 1; 234 break; 235 case 'L': 236 usestat = 1; 237 break; 238 case 'n': 239 nonl = 1; 240 break; 241 case 'q': 242 quiet = 1; 243 break; 244 case 'f': 245 statfmt = optarg; 246 /* FALLTHROUGH */ 247 case 'l': 248 case 'r': 249 case 's': 250 case 'x': 251 if (fmtchar != 0) 252 errx(1, "can't use format '%c' with '%c'", 253 fmtchar, ch); 254 fmtchar = ch; 255 break; 256 case 't': 257 timefmt = optarg; 258 break; 259 default: 260 usage(synopsis); 261 } 262 263 argc -= optind; 264 argv += optind; 265 fn = 1; 266 267 if (fmtchar == '\0') { 268 if (lsF) 269 fmtchar = 'l'; 270 else { 271 fmtchar = 'f'; 272 statfmt = DEF_FORMAT; 273 } 274 } 275 276 if (lsF && fmtchar != 'l') 277 errx(1, "can't use format '%c' with -F", fmtchar); 278 279 switch (fmtchar) { 280 case 'f': 281 /* statfmt already set */ 282 break; 283 case 'l': 284 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 285 break; 286 case 'r': 287 statfmt = RAW_FORMAT; 288 break; 289 case 's': 290 statfmt = SHELL_FORMAT; 291 break; 292 case 'x': 293 statfmt = LINUX_FORMAT; 294 if (timefmt == NULL) 295 timefmt = "%c"; 296 break; 297 default: 298 usage(synopsis); 299 /*NOTREACHED*/ 300 } 301 302 if (timefmt == NULL) 303 timefmt = TIME_FORMAT; 304 305 errs = 0; 306 do { 307 if (argc == 0) 308 rc = fstat(STDIN_FILENO, &st); 309 else if (usestat) 310 rc = stat(argv[0], &st); 311 else 312 rc = lstat(argv[0], &st); 313 314 if (rc == -1) { 315 errs = 1; 316 linkfail = 1; 317 if (!quiet) 318 warn("%s: stat", 319 argc == 0 ? "(stdin)" : argv[0]); 320 } 321 else 322 output(&st, argv[0], statfmt, fn, nonl, quiet); 323 324 argv++; 325 argc--; 326 fn++; 327 } while (argc > 0); 328 329 return (am_readlink ? linkfail : errs); 330} 331 332void 333usage(const char *synopsis) 334{ 335 336 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 337 exit(1); 338} 339 340/* 341 * Parses a format string. 342 */ 343void 344output(const struct stat *st, const char *file, 345 const char *statfmt, int fn, int nonl, int quiet) 346{ 347 int flags, size, prec, ofmt, hilo, what; 348 char buf[PATH_MAX]; 349 const char *subfmt; 350 int nl, t, i; 351 352 nl = 1; 353 while (*statfmt != '\0') { 354 355 /* 356 * Non-format characters go straight out. 357 */ 358 if (*statfmt != FMT_MAGIC) { 359 addchar(stdout, *statfmt, &nl); 360 statfmt++; 361 continue; 362 } 363 364 /* 365 * The current format "substring" starts here, 366 * and then we skip the magic. 367 */ 368 subfmt = statfmt; 369 statfmt++; 370 371 /* 372 * Some simple one-character "formats". 373 */ 374 switch (*statfmt) { 375 case SIMPLE_NEWLINE: 376 addchar(stdout, '\n', &nl); 377 statfmt++; 378 continue; 379 case SIMPLE_TAB: 380 addchar(stdout, '\t', &nl); 381 statfmt++; 382 continue; 383 case SIMPLE_PERCENT: 384 addchar(stdout, '%', &nl); 385 statfmt++; 386 continue; 387 case SIMPLE_NUMBER: { 388 char num[12], *p; 389 390 snprintf(num, sizeof(num), "%d", fn); 391 for (p = &num[0]; *p; p++) 392 addchar(stdout, *p, &nl); 393 statfmt++; 394 continue; 395 } 396 } 397 398 /* 399 * This must be an actual format string. Format strings are 400 * similar to printf(3) formats up to a point, and are of 401 * the form: 402 * 403 * % required start of format 404 * [-# +0] opt. format characters 405 * size opt. field width 406 * . opt. decimal separator, followed by 407 * prec opt. precision 408 * fmt opt. output specifier (string, numeric, etc.) 409 * sub opt. sub field specifier (high, middle, low) 410 * datum required field specifier (size, mode, etc) 411 * 412 * Only the % and the datum selector are required. All data 413 * have reasonable default output forms. The "sub" specifier 414 * only applies to certain data (mode, dev, rdev, filetype). 415 * The symlink output defaults to STRING, yet will only emit 416 * the leading " -> " if STRING is explicitly specified. The 417 * sizerdev datum will generate rdev output for character or 418 * block devices, and size output for all others. 419 */ 420 flags = 0; 421 do { 422 if (*statfmt == FMT_POUND) 423 flags |= FLAG_POUND; 424 else if (*statfmt == FMT_SPACE) 425 flags |= FLAG_SPACE; 426 else if (*statfmt == FMT_PLUS) 427 flags |= FLAG_PLUS; 428 else if (*statfmt == FMT_ZERO) 429 flags |= FLAG_ZERO; 430 else if (*statfmt == FMT_MINUS) 431 flags |= FLAG_MINUS; 432 else 433 break; 434 statfmt++; 435 } while (1/*CONSTCOND*/); 436 437 size = -1; 438 if (isdigit((unsigned)*statfmt)) { 439 size = 0; 440 while (isdigit((unsigned)*statfmt)) { 441 size = (size * 10) + (*statfmt - '0'); 442 statfmt++; 443 if (size < 0) 444 goto badfmt; 445 } 446 } 447 448 prec = -1; 449 if (*statfmt == FMT_DOT) { 450 statfmt++; 451 452 prec = 0; 453 while (isdigit((unsigned)*statfmt)) { 454 prec = (prec * 10) + (*statfmt - '0'); 455 statfmt++; 456 if (prec < 0) 457 goto badfmt; 458 } 459 } 460 461#define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 462#define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 463 switch (*statfmt) { 464 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 465 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 466 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 467 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 468 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 469 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 470 default: 471 ofmt = 0; 472 break; 473 } 474 475 switch (*statfmt) { 476 fmtcase(hilo, HIGH_PIECE); 477 fmtcase(hilo, MIDDLE_PIECE); 478 fmtcase(hilo, LOW_PIECE); 479 default: 480 hilo = 0; 481 break; 482 } 483 484 switch (*statfmt) { 485 fmtcase(what, SHOW_st_dev); 486 fmtcase(what, SHOW_st_ino); 487 fmtcase(what, SHOW_st_mode); 488 fmtcase(what, SHOW_st_nlink); 489 fmtcase(what, SHOW_st_uid); 490 fmtcase(what, SHOW_st_gid); 491 fmtcase(what, SHOW_st_rdev); 492 fmtcase(what, SHOW_st_atime); 493 fmtcase(what, SHOW_st_mtime); 494 fmtcase(what, SHOW_st_ctime); 495 fmtcase(what, SHOW_st_btime); 496 fmtcase(what, SHOW_st_size); 497 fmtcase(what, SHOW_st_blocks); 498 fmtcase(what, SHOW_st_blksize); 499 fmtcase(what, SHOW_st_flags); 500 fmtcase(what, SHOW_st_gen); 501 fmtcase(what, SHOW_symlink); 502 fmtcase(what, SHOW_filetype); 503 fmtcase(what, SHOW_filename); 504 fmtcase(what, SHOW_sizerdev); 505 default: 506 goto badfmt; 507 } 508#undef fmtcasef 509#undef fmtcase 510 511 t = format1(st, 512 file, 513 subfmt, statfmt - subfmt, 514 buf, sizeof(buf), 515 flags, size, prec, ofmt, hilo, what); 516 517 for (i = 0; i < t && i < sizeof(buf); i++) 518 addchar(stdout, buf[i], &nl); 519 520 continue; 521 522 badfmt: 523 errx(1, "%.*s: bad format", 524 (int)(statfmt - subfmt + 1), subfmt); 525 } 526 527 if (!nl && !nonl) 528 (void)fputc('\n', stdout); 529 (void)fflush(stdout); 530} 531 532/* 533 * Arranges output according to a single parsed format substring. 534 */ 535int 536format1(const struct stat *st, 537 const char *file, 538 const char *fmt, int flen, 539 char *buf, size_t blen, 540 int flags, int size, int prec, int ofmt, 541 int hilo, int what) 542{ 543 u_int64_t data; 544 char *sdata, lfmt[24], tmp[20]; 545 char smode[12], sid[12], path[PATH_MAX + 4]; 546 struct passwd *pw; 547 struct group *gr; 548 const struct timespec *tsp; 549 struct timespec ts; 550 struct tm *tm; 551 int l, small, formats; 552 553 tsp = NULL; 554 formats = 0; 555 small = 0; 556 557 /* 558 * First, pick out the data and tweak it based on hilo or 559 * specified output format (symlink output only). 560 */ 561 switch (what) { 562 case SHOW_st_dev: 563 case SHOW_st_rdev: 564 small = (sizeof(st->st_dev) == 4); 565 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 566#if HAVE_DEVNAME 567 sdata = (what == SHOW_st_dev) ? 568 devname(st->st_dev, S_IFBLK) : 569 devname(st->st_rdev, 570 S_ISCHR(st->st_mode) ? S_IFCHR : 571 S_ISBLK(st->st_mode) ? S_IFBLK : 572 0U); 573 if (sdata == NULL) 574 sdata = "???"; 575#endif /* HAVE_DEVNAME */ 576 if (hilo == HIGH_PIECE) { 577 data = major(data); 578 hilo = 0; 579 } 580 else if (hilo == LOW_PIECE) { 581 data = minor((unsigned)data); 582 hilo = 0; 583 } 584 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 585#if HAVE_DEVNAME 586 FMTF_STRING; 587#else /* HAVE_DEVNAME */ 588 0; 589#endif /* HAVE_DEVNAME */ 590 if (ofmt == 0) 591 ofmt = FMTF_UNSIGNED; 592 break; 593 case SHOW_st_ino: 594 small = (sizeof(st->st_ino) == 4); 595 data = st->st_ino; 596 sdata = NULL; 597 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 598 if (ofmt == 0) 599 ofmt = FMTF_UNSIGNED; 600 break; 601 case SHOW_st_mode: 602 small = (sizeof(st->st_mode) == 4); 603 data = st->st_mode; 604 strmode(st->st_mode, smode); 605 sdata = smode; 606 l = strlen(sdata); 607 if (sdata[l - 1] == ' ') 608 sdata[--l] = '\0'; 609 if (hilo == HIGH_PIECE) { 610 data >>= 12; 611 sdata += 1; 612 sdata[3] = '\0'; 613 hilo = 0; 614 } 615 else if (hilo == MIDDLE_PIECE) { 616 data = (data >> 9) & 07; 617 sdata += 4; 618 sdata[3] = '\0'; 619 hilo = 0; 620 } 621 else if (hilo == LOW_PIECE) { 622 data &= 0777; 623 sdata += 7; 624 sdata[3] = '\0'; 625 hilo = 0; 626 } 627 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 628 FMTF_STRING; 629 if (ofmt == 0) 630 ofmt = FMTF_OCTAL; 631 break; 632 case SHOW_st_nlink: 633 small = (sizeof(st->st_dev) == 4); 634 data = st->st_nlink; 635 sdata = NULL; 636 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 637 if (ofmt == 0) 638 ofmt = FMTF_UNSIGNED; 639 break; 640 case SHOW_st_uid: 641 small = (sizeof(st->st_uid) == 4); 642 data = st->st_uid; 643 if ((pw = getpwuid(st->st_uid)) != NULL) 644 sdata = pw->pw_name; 645 else { 646 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 647 sdata = sid; 648 } 649 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 650 FMTF_STRING; 651 if (ofmt == 0) 652 ofmt = FMTF_UNSIGNED; 653 break; 654 case SHOW_st_gid: 655 small = (sizeof(st->st_gid) == 4); 656 data = st->st_gid; 657 if ((gr = getgrgid(st->st_gid)) != NULL) 658 sdata = gr->gr_name; 659 else { 660 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 661 sdata = sid; 662 } 663 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 664 FMTF_STRING; 665 if (ofmt == 0) 666 ofmt = FMTF_UNSIGNED; 667 break; 668 case SHOW_st_atime: 669 tsp = &st->st_atimespec; 670 /* FALLTHROUGH */ 671 case SHOW_st_mtime: 672 if (tsp == NULL) 673 tsp = &st->st_mtimespec; 674 /* FALLTHROUGH */ 675 case SHOW_st_ctime: 676 if (tsp == NULL) 677 tsp = &st->st_ctimespec; 678 /* FALLTHROUGH */ 679#if HAVE_STRUCT_STAT_ST_BIRTHTIME 680 case SHOW_st_btime: 681 if (tsp == NULL) 682 tsp = &st->st_birthtimespec; 683#endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */ 684 ts = *tsp; /* copy so we can muck with it */ 685 small = (sizeof(ts.tv_sec) == 4); 686 data = ts.tv_sec; 687 small = 1; 688 tm = localtime(&ts.tv_sec); 689 (void)strftime(path, sizeof(path), timefmt, tm); 690 sdata = path; 691 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 692 FMTF_FLOAT | FMTF_STRING; 693 if (ofmt == 0) 694 ofmt = FMTF_DECIMAL; 695 break; 696 case SHOW_st_size: 697 small = (sizeof(st->st_size) == 4); 698 data = st->st_size; 699 sdata = NULL; 700 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 701 if (ofmt == 0) 702 ofmt = FMTF_UNSIGNED; 703 break; 704 case SHOW_st_blocks: 705 small = (sizeof(st->st_blocks) == 4); 706 data = st->st_blocks; 707 sdata = NULL; 708 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 709 if (ofmt == 0) 710 ofmt = FMTF_UNSIGNED; 711 break; 712 case SHOW_st_blksize: 713 small = (sizeof(st->st_blksize) == 4); 714 data = st->st_blksize; 715 sdata = NULL; 716 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 717 if (ofmt == 0) 718 ofmt = FMTF_UNSIGNED; 719 break; 720#if HAVE_STRUCT_STAT_ST_FLAGS 721 case SHOW_st_flags: 722 small = (sizeof(st->st_flags) == 4); 723 data = st->st_flags; 724 sdata = NULL; 725 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 726 if (ofmt == 0) 727 ofmt = FMTF_UNSIGNED; 728 break; 729#endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 730#if HAVE_STRUCT_STAT_ST_GEN 731 case SHOW_st_gen: 732 small = (sizeof(st->st_gen) == 4); 733 data = st->st_gen; 734 sdata = NULL; 735 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 736 if (ofmt == 0) 737 ofmt = FMTF_UNSIGNED; 738 break; 739#endif /* HAVE_STRUCT_STAT_ST_GEN */ 740 case SHOW_symlink: 741 small = 0; 742 data = 0; 743 if (S_ISLNK(st->st_mode)) { 744 snprintf(path, sizeof(path), " -> "); 745 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 746 if (l == -1) { 747 linkfail = 1; 748 l = 0; 749 path[0] = '\0'; 750 } 751 path[l + 4] = '\0'; 752 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 753 } 754 else { 755 linkfail = 1; 756 sdata = ""; 757 } 758 formats = FMTF_STRING; 759 if (ofmt == 0) 760 ofmt = FMTF_STRING; 761 break; 762 case SHOW_filetype: 763 small = 0; 764 data = 0; 765 sdata = smode; 766 sdata[0] = '\0'; 767 if (hilo == 0 || hilo == LOW_PIECE) { 768 switch (st->st_mode & S_IFMT) { 769 case S_IFIFO: (void)strcat(sdata, "|"); break; 770 case S_IFDIR: (void)strcat(sdata, "/"); break; 771 case S_IFREG: 772 if (st->st_mode & 773 (S_IXUSR | S_IXGRP | S_IXOTH)) 774 (void)strcat(sdata, "*"); 775 break; 776 case S_IFLNK: (void)strcat(sdata, "@"); break; 777 case S_IFSOCK: (void)strcat(sdata, "="); break; 778#ifdef S_IFWHT 779 case S_IFWHT: (void)strcat(sdata, "%"); break; 780#endif /* S_IFWHT */ 781#ifdef S_IFDOOR 782 case S_IFDOOR: (void)strcat(sdata, ">"); break; 783#endif /* S_IFDOOR */ 784 } 785 hilo = 0; 786 } 787 else if (hilo == HIGH_PIECE) { 788 switch (st->st_mode & S_IFMT) { 789 case S_IFIFO: sdata = "Fifo File"; break; 790 case S_IFCHR: sdata = "Character Device"; break; 791 case S_IFDIR: sdata = "Directory"; break; 792 case S_IFBLK: sdata = "Block Device"; break; 793 case S_IFREG: sdata = "Regular File"; break; 794 case S_IFLNK: sdata = "Symbolic Link"; break; 795 case S_IFSOCK: sdata = "Socket"; break; 796#ifdef S_IFWHT 797 case S_IFWHT: sdata = "Whiteout File"; break; 798#endif /* S_IFWHT */ 799#ifdef S_IFDOOR 800 case S_IFDOOR: sdata = "Door"; break; 801#endif /* S_IFDOOR */ 802 default: sdata = "???"; break; 803 } 804 hilo = 0; 805 } 806 formats = FMTF_STRING; 807 if (ofmt == 0) 808 ofmt = FMTF_STRING; 809 break; 810 case SHOW_filename: 811 small = 0; 812 data = 0; 813 if (file == NULL) 814 (void)strncpy(path, "(stdin)", sizeof(path)); 815 else 816 (void)strncpy(path, file, sizeof(path)); 817 sdata = path; 818 formats = FMTF_STRING; 819 if (ofmt == 0) 820 ofmt = FMTF_STRING; 821 break; 822 case SHOW_sizerdev: 823 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 824 char majdev[20], mindev[20]; 825 int l1, l2; 826 827 l1 = format1(st, 828 file, 829 fmt, flen, 830 majdev, sizeof(majdev), 831 flags, size, prec, 832 ofmt, HIGH_PIECE, SHOW_st_rdev); 833 l2 = format1(st, 834 file, 835 fmt, flen, 836 mindev, sizeof(mindev), 837 flags, size, prec, 838 ofmt, LOW_PIECE, SHOW_st_rdev); 839 return (snprintf(buf, blen, "%.*s,%.*s", 840 l1, majdev, l2, mindev)); 841 } 842 else { 843 return (format1(st, 844 file, 845 fmt, flen, 846 buf, blen, 847 flags, size, prec, 848 ofmt, 0, SHOW_st_size)); 849 } 850 /*NOTREACHED*/ 851 default: 852 errx(1, "%.*s: bad format", (int)flen, fmt); 853 } 854 855 /* 856 * If a subdatum was specified but not supported, or an output 857 * format was selected that is not supported, that's an error. 858 */ 859 if (hilo != 0 || (ofmt & formats) == 0) 860 errx(1, "%.*s: bad format", (int)flen, fmt); 861 862 /* 863 * Assemble the format string for passing to printf(3). 864 */ 865 lfmt[0] = '\0'; 866 (void)strcat(lfmt, "%"); 867 if (flags & FLAG_POUND) 868 (void)strcat(lfmt, "#"); 869 if (flags & FLAG_SPACE) 870 (void)strcat(lfmt, " "); 871 if (flags & FLAG_PLUS) 872 (void)strcat(lfmt, "+"); 873 if (flags & FLAG_MINUS) 874 (void)strcat(lfmt, "-"); 875 if (flags & FLAG_ZERO) 876 (void)strcat(lfmt, "0"); 877 878 /* 879 * Only the timespecs support the FLOAT output format, and that 880 * requires work that differs from the other formats. 881 */ 882 if (ofmt == FMTF_FLOAT) { 883 /* 884 * Nothing after the decimal point, so just print seconds. 885 */ 886 if (prec == 0) { 887 if (size != -1) { 888 (void)snprintf(tmp, sizeof(tmp), "%d", size); 889 (void)strcat(lfmt, tmp); 890 } 891 (void)strcat(lfmt, "d"); 892 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 893 } 894 895 /* 896 * Unspecified precision gets all the precision we have: 897 * 9 digits. 898 */ 899 if (prec == -1) 900 prec = 9; 901 902 /* 903 * Adjust the size for the decimal point and the digits 904 * that will follow. 905 */ 906 size -= prec + 1; 907 908 /* 909 * Any leftover size that's legitimate will be used. 910 */ 911 if (size > 0) { 912 (void)snprintf(tmp, sizeof(tmp), "%d", size); 913 (void)strcat(lfmt, tmp); 914 } 915 (void)strcat(lfmt, "d"); 916 917 /* 918 * The stuff after the decimal point always needs zero 919 * filling. 920 */ 921 (void)strcat(lfmt, ".%0"); 922 923 /* 924 * We can "print" at most nine digits of precision. The 925 * rest we will pad on at the end. 926 */ 927 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 928 (void)strcat(lfmt, tmp); 929 930 /* 931 * For precision of less that nine digits, trim off the 932 * less significant figures. 933 */ 934 for (; prec < 9; prec++) 935 ts.tv_nsec /= 10; 936 937 /* 938 * Use the format, and then tack on any zeroes that 939 * might be required to make up the requested precision. 940 */ 941 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 942 for (; prec > 9 && l < blen; prec--, l++) 943 (void)strcat(buf, "0"); 944 return (l); 945 } 946 947 /* 948 * Add on size and precision, if specified, to the format. 949 */ 950 if (size != -1) { 951 (void)snprintf(tmp, sizeof(tmp), "%d", size); 952 (void)strcat(lfmt, tmp); 953 } 954 if (prec != -1) { 955 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 956 (void)strcat(lfmt, tmp); 957 } 958 959 /* 960 * String output uses the temporary sdata. 961 */ 962 if (ofmt == FMTF_STRING) { 963 if (sdata == NULL) 964 errx(1, "%.*s: bad format", (int)flen, fmt); 965 (void)strcat(lfmt, "s"); 966 return (snprintf(buf, blen, lfmt, sdata)); 967 } 968 969 /* 970 * Ensure that sign extension does not cause bad looking output 971 * for some forms. 972 */ 973 if (small && ofmt != FMTF_DECIMAL) 974 data = (u_int32_t)data; 975 976 /* 977 * The four "numeric" output forms. 978 */ 979 (void)strcat(lfmt, "ll"); 980 switch (ofmt) { 981 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 982 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 983 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 984 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 985 } 986 987 return (snprintf(buf, blen, lfmt, data)); 988} 989