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 #if 0 38 #ifndef lint 39 __RCSID("$NetBSD: stat.c,v 1.9 2002/10/19 20:33:19 provos Exp $"); 40 #endif 41 #endif 42 43 #include <sys/cdefs.h> 44 __FBSDID("$FreeBSD$"); 45 46 #include <sys/types.h> 47 #include <sys/stat.h> 48 49 #include <ctype.h> 50 #include <err.h> 51 #include <grp.h> 52 #include <limits.h> 53 #include <pwd.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <time.h> 58 #include <unistd.h> 59 60 #define DEF_FORMAT \ 61 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" %k %b %N" 62 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c %k %b %N" 63 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 64 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 65 #define SHELL_FORMAT \ 66 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 67 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 68 "st_atimespec=%a st_mtimespec=%m st_ctimespec=%c " \ 69 "st_blksize=%k st_blocks=%b" 70 #define LINUX_FORMAT \ 71 " File: \"%N\"%n" \ 72 " Size: %-11z FileType: %HT%n" \ 73 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 74 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 75 "Access: %Sa%n" \ 76 "Modify: %Sm%n" \ 77 "Change: %Sc" 78 79 #define TIME_FORMAT "%b %e %T %Y" 80 81 #define FLAG_POUND 0x01 82 #define FLAG_SPACE 0x02 83 #define FLAG_PLUS 0x04 84 #define FLAG_ZERO 0x08 85 #define FLAG_MINUS 0x10 86 87 /* 88 * These format characters must all be unique, except the magic one. 89 */ 90 #define FMT_MAGIC '%' 91 #define FMT_DOT '.' 92 93 #define SIMPLE_NEWLINE 'n' 94 #define SIMPLE_TAB 't' 95 #define SIMPLE_PERCENT '%' 96 #define SIMPLE_NUMBER '@' 97 98 #define FMT_POUND '#' 99 #define FMT_SPACE ' ' 100 #define FMT_PLUS '+' 101 #define FMT_ZERO '0' 102 #define FMT_MINUS '-' 103 104 #define FMT_DECIMAL 'D' 105 #define FMT_OCTAL 'O' 106 #define FMT_UNSIGNED 'U' 107 #define FMT_HEX 'X' 108 #define FMT_FLOAT 'F' 109 #define FMT_STRING 'S' 110 111 #define FMTF_DECIMAL 0x01 112 #define FMTF_OCTAL 0x02 113 #define FMTF_UNSIGNED 0x04 114 #define FMTF_HEX 0x08 115 #define FMTF_FLOAT 0x10 116 #define FMTF_STRING 0x20 117 118 #define HIGH_PIECE 'H' 119 #define MIDDLE_PIECE 'M' 120 #define LOW_PIECE 'L' 121 122 #define SHOW_st_dev 'd' 123 #define SHOW_st_ino 'i' 124 #define SHOW_st_mode 'p' 125 #define SHOW_st_nlink 'l' 126 #define SHOW_st_uid 'u' 127 #define SHOW_st_gid 'g' 128 #define SHOW_st_rdev 'r' 129 #define SHOW_st_atime 'a' 130 #define SHOW_st_mtime 'm' 131 #define SHOW_st_ctime 'c' 132 #define SHOW_st_size 'z' 133 #define SHOW_st_blocks 'b' 134 #define SHOW_st_blksize 'k' 135 #define SHOW_st_flags 'f' 136 #define SHOW_st_gen 'v' 137 #define SHOW_symlink 'Y' 138 #define SHOW_filetype 'T' 139 #define SHOW_filename 'N' 140 #define SHOW_sizerdev 'Z' 141 142 void usage(const char *); 143 void output(const struct stat *, const char *, 144 const char *, int, int, int); 145 int format1(const struct stat *, /* stat info */ 146 const char *, /* the file name */ 147 const char *, int, /* the format string itself */ 148 char *, size_t, /* a place to put the output */ 149 int, int, int, int, /* the parsed format */ 150 int, int); 151 152 char *timefmt; 153 int linkfail; 154 155 #define addchar(s, c, nl) \ 156 do { \ 157 (void)fputc((c), (s)); \ 158 (*nl) = ((c) == '\n'); \ 159 } while (0/*CONSTCOND*/) 160 161 int 162 main(int argc, char *argv[]) 163 { 164 struct stat st; 165 int ch, rc, errs, am_readlink; 166 int lsF, fmtchar, usestat, fn, nonl, quiet; 167 char *statfmt, *options, *synopsis; 168 169 am_readlink = 0; 170 lsF = 0; 171 fmtchar = '\0'; 172 usestat = 0; 173 nonl = 0; 174 quiet = 0; 175 linkfail = 0; 176 statfmt = NULL; 177 timefmt = NULL; 178 179 if (strcmp(getprogname(), "readlink") == 0) { 180 am_readlink = 1; 181 options = "n"; 182 synopsis = "[-n] [file ...]"; 183 statfmt = "%Y"; 184 fmtchar = 'f'; 185 quiet = 1; 186 } else { 187 options = "f:FlLnqrst:x"; 188 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 189 } 190 191 while ((ch = getopt(argc, argv, options)) != -1) 192 switch (ch) { 193 case 'F': 194 lsF = 1; 195 break; 196 case 'L': 197 usestat = 1; 198 break; 199 case 'n': 200 nonl = 1; 201 break; 202 case 'q': 203 quiet = 1; 204 break; 205 case 'f': 206 statfmt = optarg; 207 /* FALLTHROUGH */ 208 case 'l': 209 case 'r': 210 case 's': 211 case 'x': 212 if (fmtchar != 0) 213 errx(1, "can't use format '%c' with '%c'", 214 fmtchar, ch); 215 fmtchar = ch; 216 break; 217 case 't': 218 timefmt = optarg; 219 break; 220 default: 221 usage(synopsis); 222 } 223 224 argc -= optind; 225 argv += optind; 226 fn = 1; 227 228 if (fmtchar == '\0') { 229 if (lsF) 230 fmtchar = 'l'; 231 else { 232 fmtchar = 'f'; 233 statfmt = DEF_FORMAT; 234 } 235 } 236 237 if (lsF && fmtchar != 'l') 238 errx(1, "can't use format '%c' with -F", fmtchar); 239 240 switch (fmtchar) { 241 case 'f': 242 /* statfmt already set */ 243 break; 244 case 'l': 245 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 246 break; 247 case 'r': 248 statfmt = RAW_FORMAT; 249 break; 250 case 's': 251 statfmt = SHELL_FORMAT; 252 break; 253 case 'x': 254 statfmt = LINUX_FORMAT; 255 if (timefmt == NULL) 256 timefmt = "%c"; 257 break; 258 default: 259 usage(synopsis); 260 /*NOTREACHED*/ 261 } 262 263 if (timefmt == NULL) 264 timefmt = TIME_FORMAT; 265 266 errs = 0; 267 do { 268 if (argc == 0) 269 rc = fstat(STDIN_FILENO, &st); 270 else if (usestat) 271 rc = stat(argv[0], &st); 272 else 273 rc = lstat(argv[0], &st); 274 275 if (rc == -1) { 276 errs = 1; 277 linkfail = 1; 278 if (!quiet) 279 warn("%s: stat", 280 argc == 0 ? "(stdin)" : argv[0]); 281 } 282 else 283 output(&st, argv[0], statfmt, fn, nonl, quiet); 284 285 argv++; 286 argc--; 287 fn++; 288 } while (argc > 0); 289 290 return (am_readlink ? linkfail : errs); 291 } 292 293 void 294 usage(const char *synopsis) 295 { 296 297 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 298 exit(1); 299 } 300 301 /* 302 * Parses a format string. 303 */ 304 void 305 output(const struct stat *st, const char *file, 306 const char *statfmt, int fn, int nonl, int quiet) 307 { 308 int flags, size, prec, ofmt, hilo, what; 309 char buf[PATH_MAX]; 310 const char *subfmt; 311 int nl, t, i; 312 313 nl = 1; 314 while (*statfmt != '\0') { 315 316 /* 317 * Non-format characters go straight out. 318 */ 319 if (*statfmt != FMT_MAGIC) { 320 addchar(stdout, *statfmt, &nl); 321 statfmt++; 322 continue; 323 } 324 325 /* 326 * The current format "substring" starts here, 327 * and then we skip the magic. 328 */ 329 subfmt = statfmt; 330 statfmt++; 331 332 /* 333 * Some simple one-character "formats". 334 */ 335 switch (*statfmt) { 336 case SIMPLE_NEWLINE: 337 addchar(stdout, '\n', &nl); 338 statfmt++; 339 continue; 340 case SIMPLE_TAB: 341 addchar(stdout, '\t', &nl); 342 statfmt++; 343 continue; 344 case SIMPLE_PERCENT: 345 addchar(stdout, '%', &nl); 346 statfmt++; 347 continue; 348 case SIMPLE_NUMBER: { 349 char num[12], *p; 350 351 snprintf(num, sizeof(num), "%d", fn); 352 for (p = &num[0]; *p; p++) 353 addchar(stdout, *p, &nl); 354 statfmt++; 355 continue; 356 } 357 } 358 359 /* 360 * This must be an actual format string. Format strings are 361 * similar to printf(3) formats up to a point, and are of 362 * the form: 363 * 364 * % required start of format 365 * [-# +0] opt. format characters 366 * size opt. field width 367 * . opt. decimal separator, followed by 368 * prec opt. precision 369 * fmt opt. output specifier (string, numeric, etc.) 370 * sub opt. sub field specifier (high, middle, low) 371 * datum required field specifier (size, mode, etc) 372 * 373 * Only the % and the datum selector are required. All data 374 * have reasonable default output forms. The "sub" specifier 375 * only applies to certain data (mode, dev, rdev, filetype). 376 * The symlink output defaults to STRING, yet will only emit 377 * the leading " -> " if STRING is explicitly specified. The 378 * sizerdev datum will generate rdev output for character or 379 * block devices, and size output for all others. 380 */ 381 flags = 0; 382 do { 383 if (*statfmt == FMT_POUND) 384 flags |= FLAG_POUND; 385 else if (*statfmt == FMT_SPACE) 386 flags |= FLAG_SPACE; 387 else if (*statfmt == FMT_PLUS) 388 flags |= FLAG_PLUS; 389 else if (*statfmt == FMT_ZERO) 390 flags |= FLAG_ZERO; 391 else if (*statfmt == FMT_MINUS) 392 flags |= FLAG_MINUS; 393 else 394 break; 395 statfmt++; 396 } while (1/*CONSTCOND*/); 397 398 size = -1; 399 if (isdigit((unsigned)*statfmt)) { 400 size = 0; 401 while (isdigit((unsigned)*statfmt)) { 402 size = (size * 10) + (*statfmt - '0'); 403 statfmt++; 404 if (size < 0) 405 goto badfmt; 406 } 407 } 408 409 prec = -1; 410 if (*statfmt == FMT_DOT) { 411 statfmt++; 412 413 prec = 0; 414 while (isdigit((unsigned)*statfmt)) { 415 prec = (prec * 10) + (*statfmt - '0'); 416 statfmt++; 417 if (prec < 0) 418 goto badfmt; 419 } 420 } 421 422 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 423 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 424 switch (*statfmt) { 425 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 426 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 427 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 428 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 429 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 430 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 431 default: 432 ofmt = 0; 433 break; 434 } 435 436 switch (*statfmt) { 437 fmtcase(hilo, HIGH_PIECE); 438 fmtcase(hilo, MIDDLE_PIECE); 439 fmtcase(hilo, LOW_PIECE); 440 default: 441 hilo = 0; 442 break; 443 } 444 445 switch (*statfmt) { 446 fmtcase(what, SHOW_st_dev); 447 fmtcase(what, SHOW_st_ino); 448 fmtcase(what, SHOW_st_mode); 449 fmtcase(what, SHOW_st_nlink); 450 fmtcase(what, SHOW_st_uid); 451 fmtcase(what, SHOW_st_gid); 452 fmtcase(what, SHOW_st_rdev); 453 fmtcase(what, SHOW_st_atime); 454 fmtcase(what, SHOW_st_mtime); 455 fmtcase(what, SHOW_st_ctime); 456 fmtcase(what, SHOW_st_size); 457 fmtcase(what, SHOW_st_blocks); 458 fmtcase(what, SHOW_st_blksize); 459 fmtcase(what, SHOW_st_flags); 460 fmtcase(what, SHOW_st_gen); 461 fmtcase(what, SHOW_symlink); 462 fmtcase(what, SHOW_filetype); 463 fmtcase(what, SHOW_filename); 464 fmtcase(what, SHOW_sizerdev); 465 default: 466 goto badfmt; 467 } 468 #undef fmtcasef 469 #undef fmtcase 470 471 t = format1(st, 472 file, 473 subfmt, statfmt - subfmt, 474 buf, sizeof(buf), 475 flags, size, prec, ofmt, hilo, what); 476 477 for (i = 0; i < t && i < sizeof(buf); i++) 478 addchar(stdout, buf[i], &nl); 479 480 continue; 481 482 badfmt: 483 errx(1, "%.*s: bad format", 484 (int)(statfmt - subfmt + 1), subfmt); 485 } 486 487 if (!nl && !nonl) 488 (void)fputc('\n', stdout); 489 (void)fflush(stdout); 490 } 491 492 /* 493 * Arranges output according to a single parsed format substring. 494 */ 495 int 496 format1(const struct stat *st, 497 const char *file, 498 const char *fmt, int flen, 499 char *buf, size_t blen, 500 int flags, int size, int prec, int ofmt, 501 int hilo, int what) 502 { 503 u_int64_t data; 504 char *sdata, lfmt[24], tmp[20]; 505 char smode[12], sid[12], path[PATH_MAX + 4]; 506 struct passwd *pw; 507 struct group *gr; 508 const struct timespec *tsp; 509 struct timespec ts; 510 struct tm *tm; 511 int l, small, formats; 512 513 tsp = NULL; 514 formats = 0; 515 small = 0; 516 517 /* 518 * First, pick out the data and tweak it based on hilo or 519 * specified output format (symlink output only). 520 */ 521 switch (what) { 522 case SHOW_st_dev: 523 case SHOW_st_rdev: 524 small = (sizeof(st->st_dev) == 4); 525 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 526 sdata = (what == SHOW_st_dev) ? 527 devname(st->st_dev, S_IFBLK) : 528 devname(st->st_rdev, 529 S_ISCHR(st->st_mode) ? S_IFCHR : 530 S_ISBLK(st->st_mode) ? S_IFBLK : 531 0U); 532 if (sdata == NULL) 533 sdata = "???"; 534 if (hilo == HIGH_PIECE) { 535 data = major(data); 536 hilo = 0; 537 } 538 else if (hilo == LOW_PIECE) { 539 data = minor((unsigned)data); 540 hilo = 0; 541 } 542 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 543 FMTF_STRING; 544 if (ofmt == 0) 545 ofmt = FMTF_UNSIGNED; 546 break; 547 case SHOW_st_ino: 548 small = (sizeof(st->st_ino) == 4); 549 data = st->st_ino; 550 sdata = NULL; 551 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 552 if (ofmt == 0) 553 ofmt = FMTF_UNSIGNED; 554 break; 555 case SHOW_st_mode: 556 small = (sizeof(st->st_mode) == 4); 557 data = st->st_mode; 558 strmode(st->st_mode, smode); 559 sdata = smode; 560 l = strlen(sdata); 561 if (sdata[l - 1] == ' ') 562 sdata[--l] = '\0'; 563 if (hilo == HIGH_PIECE) { 564 data >>= 12; 565 sdata += 1; 566 sdata[3] = '\0'; 567 hilo = 0; 568 } 569 else if (hilo == MIDDLE_PIECE) { 570 data = (data >> 9) & 07; 571 sdata += 4; 572 sdata[3] = '\0'; 573 hilo = 0; 574 } 575 else if (hilo == LOW_PIECE) { 576 data &= 0777; 577 sdata += 7; 578 sdata[3] = '\0'; 579 hilo = 0; 580 } 581 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 582 FMTF_STRING; 583 if (ofmt == 0) 584 ofmt = FMTF_OCTAL; 585 break; 586 case SHOW_st_nlink: 587 small = (sizeof(st->st_dev) == 4); 588 data = st->st_nlink; 589 sdata = NULL; 590 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 591 if (ofmt == 0) 592 ofmt = FMTF_UNSIGNED; 593 break; 594 case SHOW_st_uid: 595 small = (sizeof(st->st_uid) == 4); 596 data = st->st_uid; 597 if ((pw = getpwuid(st->st_uid)) != NULL) 598 sdata = pw->pw_name; 599 else { 600 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 601 sdata = sid; 602 } 603 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 604 FMTF_STRING; 605 if (ofmt == 0) 606 ofmt = FMTF_UNSIGNED; 607 break; 608 case SHOW_st_gid: 609 small = (sizeof(st->st_gid) == 4); 610 data = st->st_gid; 611 if ((gr = getgrgid(st->st_gid)) != NULL) 612 sdata = gr->gr_name; 613 else { 614 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 615 sdata = sid; 616 } 617 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 618 FMTF_STRING; 619 if (ofmt == 0) 620 ofmt = FMTF_UNSIGNED; 621 break; 622 case SHOW_st_atime: 623 tsp = &st->st_atimespec; 624 /* FALLTHROUGH */ 625 case SHOW_st_mtime: 626 if (tsp == NULL) 627 tsp = &st->st_mtimespec; 628 /* FALLTHROUGH */ 629 case SHOW_st_ctime: 630 if (tsp == NULL) 631 tsp = &st->st_ctimespec; 632 ts = *tsp; /* copy so we can muck with it */ 633 small = (sizeof(ts.tv_sec) == 4); 634 data = ts.tv_sec; 635 small = 1; 636 tm = localtime(&ts.tv_sec); 637 (void)strftime(path, sizeof(path), timefmt, tm); 638 sdata = path; 639 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 640 FMTF_FLOAT | FMTF_STRING; 641 if (ofmt == 0) 642 ofmt = FMTF_DECIMAL; 643 break; 644 case SHOW_st_size: 645 small = (sizeof(st->st_size) == 4); 646 data = st->st_size; 647 sdata = NULL; 648 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 649 if (ofmt == 0) 650 ofmt = FMTF_UNSIGNED; 651 break; 652 case SHOW_st_blocks: 653 small = (sizeof(st->st_blocks) == 4); 654 data = st->st_blocks; 655 sdata = NULL; 656 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 657 if (ofmt == 0) 658 ofmt = FMTF_UNSIGNED; 659 break; 660 case SHOW_st_blksize: 661 small = (sizeof(st->st_blksize) == 4); 662 data = st->st_blksize; 663 sdata = NULL; 664 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 665 if (ofmt == 0) 666 ofmt = FMTF_UNSIGNED; 667 break; 668 case SHOW_st_flags: 669 small = (sizeof(st->st_flags) == 4); 670 data = st->st_flags; 671 sdata = NULL; 672 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 673 if (ofmt == 0) 674 ofmt = FMTF_UNSIGNED; 675 break; 676 case SHOW_st_gen: 677 small = (sizeof(st->st_gen) == 4); 678 data = st->st_gen; 679 sdata = NULL; 680 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 681 if (ofmt == 0) 682 ofmt = FMTF_UNSIGNED; 683 break; 684 case SHOW_symlink: 685 small = 0; 686 data = 0; 687 if (S_ISLNK(st->st_mode)) { 688 snprintf(path, sizeof(path), " -> "); 689 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 690 if (l == -1) { 691 linkfail = 1; 692 l = 0; 693 path[0] = '\0'; 694 } 695 path[l + 4] = '\0'; 696 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 697 } 698 else { 699 linkfail = 1; 700 sdata = ""; 701 } 702 formats = FMTF_STRING; 703 if (ofmt == 0) 704 ofmt = FMTF_STRING; 705 break; 706 case SHOW_filetype: 707 small = 0; 708 data = 0; 709 sdata = smode; 710 sdata[0] = '\0'; 711 if (hilo == 0 || hilo == LOW_PIECE) { 712 switch (st->st_mode & S_IFMT) { 713 case S_IFIFO: (void)strcat(sdata, "|"); break; 714 case S_IFDIR: (void)strcat(sdata, "/"); break; 715 case S_IFREG: 716 if (st->st_mode & 717 (S_IXUSR | S_IXGRP | S_IXOTH)) 718 (void)strcat(sdata, "*"); 719 break; 720 case S_IFLNK: (void)strcat(sdata, "@"); break; 721 case S_IFSOCK: (void)strcat(sdata, "="); break; 722 case S_IFWHT: (void)strcat(sdata, "%"); break; 723 } 724 hilo = 0; 725 } 726 else if (hilo == HIGH_PIECE) { 727 switch (st->st_mode & S_IFMT) { 728 case S_IFIFO: sdata = "Fifo File"; break; 729 case S_IFCHR: sdata = "Character Device"; break; 730 case S_IFDIR: sdata = "Directory"; break; 731 case S_IFBLK: sdata = "Block Device"; break; 732 case S_IFREG: sdata = "Regular File"; break; 733 case S_IFLNK: sdata = "Symbolic Link"; break; 734 case S_IFSOCK: sdata = "Socket"; break; 735 case S_IFWHT: sdata = "Whiteout File"; break; 736 default: sdata = "???"; break; 737 } 738 hilo = 0; 739 } 740 formats = FMTF_STRING; 741 if (ofmt == 0) 742 ofmt = FMTF_STRING; 743 break; 744 case SHOW_filename: 745 small = 0; 746 data = 0; 747 if (file == NULL) 748 (void)strncpy(path, "(stdin)", sizeof(path)); 749 else 750 (void)strncpy(path, file, sizeof(path)); 751 sdata = path; 752 formats = FMTF_STRING; 753 if (ofmt == 0) 754 ofmt = FMTF_STRING; 755 break; 756 case SHOW_sizerdev: 757 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 758 char majdev[20], mindev[20]; 759 int l1, l2; 760 761 l1 = format1(st, 762 file, 763 fmt, flen, 764 majdev, sizeof(majdev), 765 flags, size, prec, 766 ofmt, HIGH_PIECE, SHOW_st_rdev); 767 l2 = format1(st, 768 file, 769 fmt, flen, 770 mindev, sizeof(mindev), 771 flags, size, prec, 772 ofmt, LOW_PIECE, SHOW_st_rdev); 773 return (snprintf(buf, blen, "%.*s,%.*s", 774 l1, majdev, l2, mindev)); 775 } 776 else { 777 return (format1(st, 778 file, 779 fmt, flen, 780 buf, blen, 781 flags, size, prec, 782 ofmt, 0, SHOW_st_size)); 783 } 784 /*NOTREACHED*/ 785 default: 786 errx(1, "%.*s: bad format", (int)flen, fmt); 787 } 788 789 /* 790 * If a subdatum was specified but not supported, or an output 791 * format was selected that is not supported, that's an error. 792 */ 793 if (hilo != 0 || (ofmt & formats) == 0) 794 errx(1, "%.*s: bad format", (int)flen, fmt); 795 796 /* 797 * Assemble the format string for passing to printf(3). 798 */ 799 lfmt[0] = '\0'; 800 (void)strcat(lfmt, "%"); 801 if (flags & FLAG_POUND) 802 (void)strcat(lfmt, "#"); 803 if (flags & FLAG_SPACE) 804 (void)strcat(lfmt, " "); 805 if (flags & FLAG_PLUS) 806 (void)strcat(lfmt, "+"); 807 if (flags & FLAG_MINUS) 808 (void)strcat(lfmt, "-"); 809 if (flags & FLAG_ZERO) 810 (void)strcat(lfmt, "0"); 811 812 /* 813 * Only the timespecs support the FLOAT output format, and that 814 * requires work that differs from the other formats. 815 */ 816 if (ofmt == FMTF_FLOAT) { 817 /* 818 * Nothing after the decimal point, so just print seconds. 819 */ 820 if (prec == 0) { 821 if (size != -1) { 822 (void)snprintf(tmp, sizeof(tmp), "%d", size); 823 (void)strcat(lfmt, tmp); 824 } 825 (void)strcat(lfmt, "d"); 826 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 827 } 828 829 /* 830 * Unspecified precision gets all the precision we have: 831 * 9 digits. 832 */ 833 if (prec == -1) 834 prec = 9; 835 836 /* 837 * Adjust the size for the decimal point and the digits 838 * that will follow. 839 */ 840 size -= prec + 1; 841 842 /* 843 * Any leftover size that's legitimate will be used. 844 */ 845 if (size > 0) { 846 (void)snprintf(tmp, sizeof(tmp), "%d", size); 847 (void)strcat(lfmt, tmp); 848 } 849 (void)strcat(lfmt, "d"); 850 851 /* 852 * The stuff after the decimal point always needs zero 853 * filling. 854 */ 855 (void)strcat(lfmt, ".%0"); 856 857 /* 858 * We can "print" at most nine digits of precision. The 859 * rest we will pad on at the end. 860 */ 861 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 862 (void)strcat(lfmt, tmp); 863 864 /* 865 * For precision of less that nine digits, trim off the 866 * less significant figures. 867 */ 868 for (; prec < 9; prec++) 869 ts.tv_nsec /= 10; 870 871 /* 872 * Use the format, and then tack on any zeroes that 873 * might be required to make up the requested precision. 874 */ 875 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 876 for (; prec > 9 && l < blen; prec--, l++) 877 (void)strcat(buf, "0"); 878 return (l); 879 } 880 881 /* 882 * Add on size and precision, if specified, to the format. 883 */ 884 if (size != -1) { 885 (void)snprintf(tmp, sizeof(tmp), "%d", size); 886 (void)strcat(lfmt, tmp); 887 } 888 if (prec != -1) { 889 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 890 (void)strcat(lfmt, tmp); 891 } 892 893 /* 894 * String output uses the temporary sdata. 895 */ 896 if (ofmt == FMTF_STRING) { 897 if (sdata == NULL) 898 errx(1, "%.*s: bad format", (int)flen, fmt); 899 (void)strcat(lfmt, "s"); 900 return (snprintf(buf, blen, lfmt, sdata)); 901 } 902 903 /* 904 * Ensure that sign extension does not cause bad looking output 905 * for some forms. 906 */ 907 if (small && ofmt != FMTF_DECIMAL) 908 data = (u_int32_t)data; 909 910 /* 911 * The four "numeric" output forms. 912 */ 913 (void)strcat(lfmt, "ll"); 914 switch (ofmt) { 915 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 916 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 917 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 918 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 919 } 920 921 return (snprintf(buf, blen, lfmt, data)); 922 } 923