1 /* $OpenBSD: stat.c,v 1.14 2009/06/24 09:44:25 sobrado Exp $ */ 2 /* $NetBSD: stat.c,v 1.19 2004/06/20 22:20:16 jmc Exp $ */ 3 4 /* 5 * Copyright (c) 2002 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Andrew Brown. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 static const char rccs_id[] = 35 "$OpenBSD: stat.c,v 1.14 2009/06/24 09:44:25 sobrado Exp $"; 36 #endif 37 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 41 #include <ctype.h> 42 #include <err.h> 43 #include <errno.h> 44 #include <grp.h> 45 #include <limits.h> 46 #include <pwd.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <time.h> 51 #include <unistd.h> 52 53 #define DEF_FORMAT \ 54 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " \ 55 "%k %b %#Xf %N" 56 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c " \ 57 "%k %b %f %N" 58 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 59 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 60 #define SHELL_FORMAT \ 61 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 62 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 63 "st_atime=%a st_mtime=%m st_ctime=%c " \ 64 "st_blksize=%k st_blocks=%b st_flags=%f" 65 #define LINUX_FORMAT \ 66 " File: \"%N\"%n" \ 67 " Size: %-11z FileType: %HT%n" \ 68 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 69 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 70 "Access: %Sa%n" \ 71 "Modify: %Sm%n" \ 72 "Change: %Sc" 73 74 #define TIME_FORMAT "%b %e %T %Y" 75 76 #define FLAG_POUND 0x01 77 #define FLAG_SPACE 0x02 78 #define FLAG_PLUS 0x04 79 #define FLAG_ZERO 0x08 80 #define FLAG_MINUS 0x10 81 82 /* 83 * These format characters must all be unique, except the magic one. 84 */ 85 #define FMT_MAGIC '%' 86 #define FMT_DOT '.' 87 88 #define SIMPLE_NEWLINE 'n' 89 #define SIMPLE_TAB 't' 90 #define SIMPLE_PERCENT '%' 91 #define SIMPLE_NUMBER '@' 92 93 #define FMT_POUND '#' 94 #define FMT_SPACE ' ' 95 #define FMT_PLUS '+' 96 #define FMT_ZERO '0' 97 #define FMT_MINUS '-' 98 99 #define FMT_DECIMAL 'D' 100 #define FMT_OCTAL 'O' 101 #define FMT_UNSIGNED 'U' 102 #define FMT_HEX 'X' 103 #define FMT_FLOAT 'F' 104 #define FMT_STRING 'S' 105 106 #define FMTF_DECIMAL 0x01 107 #define FMTF_OCTAL 0x02 108 #define FMTF_UNSIGNED 0x04 109 #define FMTF_HEX 0x08 110 #define FMTF_FLOAT 0x10 111 #define FMTF_STRING 0x20 112 113 #define HIGH_PIECE 'H' 114 #define MIDDLE_PIECE 'M' 115 #define LOW_PIECE 'L' 116 117 #define SHOW_st_dev 'd' 118 #define SHOW_st_ino 'i' 119 #define SHOW_st_mode 'p' 120 #define SHOW_st_nlink 'l' 121 #define SHOW_st_uid 'u' 122 #define SHOW_st_gid 'g' 123 #define SHOW_st_rdev 'r' 124 #define SHOW_st_atime 'a' 125 #define SHOW_st_mtime 'm' 126 #define SHOW_st_ctime 'c' 127 #define SHOW_st_btime 'B' 128 #define SHOW_st_size 'z' 129 #define SHOW_st_blocks 'b' 130 #define SHOW_st_blksize 'k' 131 #define SHOW_st_flags 'f' 132 #define SHOW_st_gen 'v' 133 #define SHOW_symlink 'Y' 134 #define SHOW_filetype 'T' 135 #define SHOW_filename 'N' 136 #define SHOW_sizerdev 'Z' 137 138 void usage(const char *); 139 void output(const struct stat *, const char *, 140 const char *, int, int); 141 int format1(const struct stat *, /* stat info */ 142 const char *, /* the file name */ 143 const char *, int, /* the format string itself */ 144 char *, size_t, /* a place to put the output */ 145 int, int, int, int, /* the parsed format */ 146 int, int); 147 148 char *timefmt; 149 int linkfail; 150 151 #define addchar(s, c, nl) \ 152 do { \ 153 (void)fputc((c), (s)); \ 154 (*nl) = ((c) == '\n'); \ 155 } while (0/*CONSTCOND*/) 156 157 extern char *__progname; 158 159 int 160 main(int argc, char *argv[]) 161 { 162 struct stat st; 163 int ch, rc, errs; 164 int lsF, fmtchar, usestat, fn, nonl, quiet; 165 char *statfmt, *options, *synopsis; 166 167 lsF = 0; 168 fmtchar = '\0'; 169 usestat = 0; 170 nonl = 0; 171 quiet = 0; 172 linkfail = 0; 173 statfmt = NULL; 174 timefmt = NULL; 175 176 options = "f:FlLnqrst:x"; 177 synopsis = "[-FLnq] [-f format | -l | -r | -s | -x] " 178 "[-t timefmt] [file ...]"; 179 180 while ((ch = getopt(argc, argv, options)) != -1) 181 switch (ch) { 182 case 'F': 183 lsF = 1; 184 break; 185 case 'L': 186 usestat = 1; 187 break; 188 case 'n': 189 nonl = 1; 190 break; 191 case 'q': 192 quiet = 1; 193 break; 194 case 'f': 195 statfmt = optarg; 196 /* FALLTHROUGH */ 197 case 'l': 198 case 'r': 199 case 's': 200 case 'x': 201 if (fmtchar != 0) 202 errx(1, "can't use format '%c' with '%c'", 203 fmtchar, ch); 204 fmtchar = ch; 205 break; 206 case 't': 207 timefmt = optarg; 208 break; 209 default: 210 usage(synopsis); 211 } 212 213 argc -= optind; 214 argv += optind; 215 fn = 1; 216 217 if (fmtchar == '\0') { 218 if (lsF) 219 fmtchar = 'l'; 220 else { 221 fmtchar = 'f'; 222 statfmt = DEF_FORMAT; 223 } 224 } 225 226 if (lsF && fmtchar != 'l') 227 errx(1, "can't use format '%c' with -F", fmtchar); 228 229 switch (fmtchar) { 230 case 'f': 231 /* statfmt already set */ 232 break; 233 case 'l': 234 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 235 break; 236 case 'r': 237 statfmt = RAW_FORMAT; 238 break; 239 case 's': 240 statfmt = SHELL_FORMAT; 241 break; 242 case 'x': 243 statfmt = LINUX_FORMAT; 244 if (timefmt == NULL) 245 timefmt = "%c"; 246 break; 247 default: 248 usage(synopsis); 249 /*NOTREACHED*/ 250 } 251 252 if (timefmt == NULL) 253 timefmt = TIME_FORMAT; 254 255 errs = 0; 256 do { 257 if (argc == 0) 258 rc = fstat(STDIN_FILENO, &st); 259 else if (usestat) { 260 /* 261 * Try stat() and if it fails, fall back to 262 * lstat() just in case we're examining a 263 * broken symlink. 264 */ 265 if ((rc = stat(argv[0], &st)) == -1 && 266 errno == ENOENT && 267 (rc = lstat(argv[0], &st)) == -1) 268 errno = ENOENT; 269 } else 270 rc = lstat(argv[0], &st); 271 272 if (rc == -1) { 273 errs = 1; 274 linkfail = 1; 275 if (!quiet) 276 warn("%s", 277 argc == 0 ? "(stdin)" : argv[0]); 278 } else 279 output(&st, argv[0], statfmt, fn, nonl); 280 281 argv++; 282 argc--; 283 fn++; 284 } while (argc > 0); 285 286 return (errs); 287 } 288 289 void 290 usage(const char *synopsis) 291 { 292 293 (void)fprintf(stderr, "usage: %s %s\n", __progname, synopsis); 294 exit(1); 295 } 296 297 /* 298 * Parses a format string. 299 */ 300 void 301 output(const struct stat *st, const char *file, 302 const char *statfmt, int fn, int nonl) 303 { 304 int flags, size, prec, ofmt, hilo, what; 305 char buf[PATH_MAX + 4 + 1]; 306 const char *subfmt; 307 int nl, t, i; 308 309 nl = 1; 310 while (*statfmt != '\0') { 311 312 /* 313 * Non-format characters go straight out. 314 */ 315 if (*statfmt != FMT_MAGIC) { 316 addchar(stdout, *statfmt, &nl); 317 statfmt++; 318 continue; 319 } 320 321 /* 322 * The current format "substring" starts here, 323 * and then we skip the magic. 324 */ 325 subfmt = statfmt; 326 statfmt++; 327 328 /* 329 * Some simple one-character "formats". 330 */ 331 switch (*statfmt) { 332 case SIMPLE_NEWLINE: 333 addchar(stdout, '\n', &nl); 334 statfmt++; 335 continue; 336 case SIMPLE_TAB: 337 addchar(stdout, '\t', &nl); 338 statfmt++; 339 continue; 340 case SIMPLE_PERCENT: 341 addchar(stdout, '%', &nl); 342 statfmt++; 343 continue; 344 case SIMPLE_NUMBER: { 345 char num[12], *p; 346 347 snprintf(num, sizeof(num), "%d", fn); 348 for (p = &num[0]; *p; p++) 349 addchar(stdout, *p, &nl); 350 statfmt++; 351 continue; 352 } 353 } 354 355 /* 356 * This must be an actual format string. Format strings are 357 * similar to printf(3) formats up to a point, and are of 358 * the form: 359 * 360 * % required start of format 361 * [-# +0] opt. format characters 362 * size opt. field width 363 * . opt. decimal separator, followed by 364 * prec opt. precision 365 * fmt opt. output specifier (string, numeric, etc.) 366 * sub opt. sub field specifier (high, middle, low) 367 * datum required field specifier (size, mode, etc) 368 * 369 * Only the % and the datum selector are required. All data 370 * have reasonable default output forms. The "sub" specifier 371 * only applies to certain data (mode, dev, rdev, filetype). 372 * The symlink output defaults to STRING, yet will only emit 373 * the leading " -> " if STRING is explicitly specified. The 374 * sizerdev datum will generate rdev output for character or 375 * block devices, and size output for all others. 376 */ 377 flags = 0; 378 do { 379 if (*statfmt == FMT_POUND) 380 flags |= FLAG_POUND; 381 else if (*statfmt == FMT_SPACE) 382 flags |= FLAG_SPACE; 383 else if (*statfmt == FMT_PLUS) 384 flags |= FLAG_PLUS; 385 else if (*statfmt == FMT_ZERO) 386 flags |= FLAG_ZERO; 387 else if (*statfmt == FMT_MINUS) 388 flags |= FLAG_MINUS; 389 else 390 break; 391 statfmt++; 392 } while (1/*CONSTCOND*/); 393 394 size = -1; 395 if (isdigit((unsigned)*statfmt)) { 396 size = 0; 397 while (isdigit((unsigned)*statfmt)) { 398 size = (size * 10) + (*statfmt - '0'); 399 statfmt++; 400 if (size < 0) 401 goto badfmt; 402 } 403 } 404 405 prec = -1; 406 if (*statfmt == FMT_DOT) { 407 statfmt++; 408 409 prec = 0; 410 while (isdigit((unsigned)*statfmt)) { 411 prec = (prec * 10) + (*statfmt - '0'); 412 statfmt++; 413 if (prec < 0) 414 goto badfmt; 415 } 416 } 417 418 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 419 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 420 switch (*statfmt) { 421 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 422 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 423 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 424 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 425 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 426 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 427 default: 428 ofmt = 0; 429 break; 430 } 431 432 switch (*statfmt) { 433 fmtcase(hilo, HIGH_PIECE); 434 fmtcase(hilo, MIDDLE_PIECE); 435 fmtcase(hilo, LOW_PIECE); 436 default: 437 hilo = 0; 438 break; 439 } 440 441 switch (*statfmt) { 442 fmtcase(what, SHOW_st_dev); 443 fmtcase(what, SHOW_st_ino); 444 fmtcase(what, SHOW_st_mode); 445 fmtcase(what, SHOW_st_nlink); 446 fmtcase(what, SHOW_st_uid); 447 fmtcase(what, SHOW_st_gid); 448 fmtcase(what, SHOW_st_rdev); 449 fmtcase(what, SHOW_st_atime); 450 fmtcase(what, SHOW_st_mtime); 451 fmtcase(what, SHOW_st_ctime); 452 fmtcase(what, SHOW_st_btime); 453 fmtcase(what, SHOW_st_size); 454 fmtcase(what, SHOW_st_blocks); 455 fmtcase(what, SHOW_st_blksize); 456 fmtcase(what, SHOW_st_flags); 457 fmtcase(what, SHOW_st_gen); 458 fmtcase(what, SHOW_symlink); 459 fmtcase(what, SHOW_filetype); 460 fmtcase(what, SHOW_filename); 461 fmtcase(what, SHOW_sizerdev); 462 default: 463 goto badfmt; 464 } 465 #undef fmtcasef 466 #undef fmtcase 467 468 t = format1(st, file, subfmt, statfmt - subfmt, buf, 469 sizeof(buf), flags, size, prec, ofmt, hilo, what); 470 471 for (i = 0; i < t && i < sizeof(buf) - 1; i++) 472 addchar(stdout, buf[i], &nl); 473 474 continue; 475 476 badfmt: 477 errx(1, "%.*s: bad format", 478 (int)(statfmt - subfmt + 1), subfmt); 479 } 480 481 if (!nl && !nonl) 482 (void)fputc('\n', stdout); 483 (void)fflush(stdout); 484 } 485 486 /* 487 * Arranges output according to a single parsed format substring. 488 */ 489 int 490 format1(const struct stat *st, 491 const char *file, 492 const char *fmt, int flen, 493 char *buf, size_t blen, 494 int flags, int size, int prec, int ofmt, 495 int hilo, int what) 496 { 497 u_int64_t data; 498 char *sdata, lfmt[24], tmp[20]; 499 char smode[12], sid[12], path[PATH_MAX + 4]; 500 struct passwd *pw; 501 struct group *gr; 502 struct tm *tm; 503 time_t secs; 504 long nsecs; 505 int l, small, formats, gottime, n; 506 507 formats = 0; 508 small = 0; 509 gottime = 0; 510 secs = 0; 511 nsecs = 0; 512 513 /* 514 * First, pick out the data and tweak it based on hilo or 515 * specified output format (symlink output only). 516 */ 517 switch (what) { 518 case SHOW_st_dev: 519 case SHOW_st_rdev: 520 small = (sizeof(st->st_dev) == 4); 521 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 522 sdata = (what == SHOW_st_dev) ? 523 devname(st->st_dev, S_IFBLK) : 524 devname(st->st_rdev, 525 S_ISCHR(st->st_mode) ? S_IFCHR : 526 S_ISBLK(st->st_mode) ? S_IFBLK : 527 0U); 528 if (sdata == NULL) 529 sdata = "???"; 530 if (hilo == HIGH_PIECE) { 531 data = major(data); 532 hilo = 0; 533 } else if (hilo == LOW_PIECE) { 534 data = minor((unsigned)data); 535 hilo = 0; 536 } 537 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 538 FMTF_STRING; 539 if (ofmt == 0) 540 ofmt = FMTF_UNSIGNED; 541 break; 542 case SHOW_st_ino: 543 small = (sizeof(st->st_ino) == 4); 544 data = st->st_ino; 545 sdata = NULL; 546 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 547 if (ofmt == 0) 548 ofmt = FMTF_UNSIGNED; 549 break; 550 case SHOW_st_mode: 551 small = (sizeof(st->st_mode) == 4); 552 data = st->st_mode; 553 strmode(st->st_mode, smode); 554 sdata = smode; 555 l = strlen(sdata); 556 if (sdata[l - 1] == ' ') 557 sdata[--l] = '\0'; 558 if (hilo == HIGH_PIECE) { 559 data >>= 12; 560 sdata += 1; 561 sdata[3] = '\0'; 562 hilo = 0; 563 } else if (hilo == MIDDLE_PIECE) { 564 data = (data >> 9) & 07; 565 sdata += 4; 566 sdata[3] = '\0'; 567 hilo = 0; 568 } else if (hilo == LOW_PIECE) { 569 data &= 0777; 570 sdata += 7; 571 sdata[3] = '\0'; 572 hilo = 0; 573 } 574 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 575 FMTF_STRING; 576 if (ofmt == 0) 577 ofmt = FMTF_OCTAL; 578 break; 579 case SHOW_st_nlink: 580 small = (sizeof(st->st_dev) == 4); 581 data = st->st_nlink; 582 sdata = NULL; 583 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 584 if (ofmt == 0) 585 ofmt = FMTF_UNSIGNED; 586 break; 587 case SHOW_st_uid: 588 small = (sizeof(st->st_uid) == 4); 589 data = st->st_uid; 590 if ((pw = getpwuid(st->st_uid)) != NULL) 591 sdata = pw->pw_name; 592 else { 593 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 594 sdata = sid; 595 } 596 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 597 FMTF_STRING; 598 if (ofmt == 0) 599 ofmt = FMTF_UNSIGNED; 600 break; 601 case SHOW_st_gid: 602 small = (sizeof(st->st_gid) == 4); 603 data = st->st_gid; 604 if ((gr = getgrgid(st->st_gid)) != NULL) 605 sdata = gr->gr_name; 606 else { 607 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 608 sdata = sid; 609 } 610 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 611 FMTF_STRING; 612 if (ofmt == 0) 613 ofmt = FMTF_UNSIGNED; 614 break; 615 case SHOW_st_atime: 616 gottime = 1; 617 secs = st->st_atime; 618 nsecs = st->st_atimensec; 619 /* FALLTHROUGH */ 620 case SHOW_st_mtime: 621 if (!gottime) { 622 gottime = 1; 623 secs = st->st_mtime; 624 nsecs = st->st_mtimensec; 625 } 626 /* FALLTHROUGH */ 627 case SHOW_st_ctime: 628 if (!gottime) { 629 gottime = 1; 630 secs = st->st_ctime; 631 nsecs = st->st_ctimensec; 632 } 633 /* FALLTHROUGH */ 634 case SHOW_st_btime: 635 if (!gottime) { 636 gottime = 1; 637 secs = st->__st_birthtimespec.tv_sec; 638 nsecs = st->__st_birthtimespec.tv_nsec; 639 } 640 small = (sizeof(secs) == 4); 641 data = secs; 642 small = 1; 643 tm = localtime(&secs); 644 (void)strftime(path, sizeof(path), timefmt, tm); 645 sdata = path; 646 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 647 FMTF_FLOAT | FMTF_STRING; 648 if (ofmt == 0) 649 ofmt = FMTF_DECIMAL; 650 break; 651 case SHOW_st_size: 652 small = (sizeof(st->st_size) == 4); 653 data = st->st_size; 654 sdata = NULL; 655 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 656 if (ofmt == 0) 657 ofmt = FMTF_UNSIGNED; 658 break; 659 case SHOW_st_blocks: 660 small = (sizeof(st->st_blocks) == 4); 661 data = st->st_blocks; 662 sdata = NULL; 663 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 664 if (ofmt == 0) 665 ofmt = FMTF_UNSIGNED; 666 break; 667 case SHOW_st_blksize: 668 small = (sizeof(st->st_blksize) == 4); 669 data = st->st_blksize; 670 sdata = NULL; 671 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 672 if (ofmt == 0) 673 ofmt = FMTF_UNSIGNED; 674 break; 675 case SHOW_st_flags: 676 small = (sizeof(st->st_flags) == 4); 677 data = st->st_flags; 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_gen: 684 small = (sizeof(st->st_gen) == 4); 685 data = st->st_gen; 686 sdata = NULL; 687 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 688 if (ofmt == 0) 689 ofmt = FMTF_UNSIGNED; 690 break; 691 case SHOW_symlink: 692 small = 0; 693 data = 0; 694 if (S_ISLNK(st->st_mode)) { 695 snprintf(path, sizeof(path), " -> "); 696 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 697 if (l == -1) { 698 linkfail = 1; 699 l = 0; 700 path[0] = '\0'; 701 } 702 path[l + 4] = '\0'; 703 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 704 } else { 705 linkfail = 1; 706 sdata = ""; 707 } 708 formats = FMTF_STRING; 709 if (ofmt == 0) 710 ofmt = FMTF_STRING; 711 break; 712 case SHOW_filetype: 713 small = 0; 714 data = 0; 715 sdata = smode; 716 sdata[0] = '\0'; 717 if (hilo == 0 || hilo == LOW_PIECE) { 718 switch (st->st_mode & S_IFMT) { 719 case S_IFIFO: 720 (void)strlcat(sdata, "|", sizeof(smode)); 721 break; 722 case S_IFDIR: 723 (void)strlcat(sdata, "/", sizeof(smode)); 724 break; 725 case S_IFREG: 726 if (st->st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) 727 (void)strlcat(sdata, "*", 728 sizeof(smode)); 729 break; 730 case S_IFLNK: 731 (void)strlcat(sdata, "@", sizeof(smode)); 732 break; 733 case S_IFSOCK: 734 (void)strlcat(sdata, "=", sizeof(smode)); 735 break; 736 } 737 hilo = 0; 738 } else if (hilo == HIGH_PIECE) { 739 switch (st->st_mode & S_IFMT) { 740 case S_IFIFO: sdata = "Fifo File"; break; 741 case S_IFCHR: sdata = "Character Device"; break; 742 case S_IFDIR: sdata = "Directory"; break; 743 case S_IFBLK: sdata = "Block Device"; break; 744 case S_IFREG: sdata = "Regular File"; break; 745 case S_IFLNK: sdata = "Symbolic Link"; break; 746 case S_IFSOCK: sdata = "Socket"; break; 747 default: sdata = "???"; break; 748 } 749 hilo = 0; 750 } 751 formats = FMTF_STRING; 752 if (ofmt == 0) 753 ofmt = FMTF_STRING; 754 break; 755 case SHOW_filename: 756 small = 0; 757 data = 0; 758 if (file == NULL) 759 (void)strlcpy(path, "(stdin)", sizeof(path)); 760 else 761 (void)strlcpy(path, file, sizeof(path)); 762 sdata = path; 763 formats = FMTF_STRING; 764 if (ofmt == 0) 765 ofmt = FMTF_STRING; 766 break; 767 case SHOW_sizerdev: 768 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 769 char majdev[20], mindev[20]; 770 int l1, l2; 771 772 l1 = format1(st, file, fmt, flen, 773 majdev, sizeof(majdev), flags, size, prec, 774 ofmt, HIGH_PIECE, SHOW_st_rdev); 775 l2 = format1(st, file, fmt, flen, 776 mindev, sizeof(mindev), flags, size, prec, 777 ofmt, LOW_PIECE, SHOW_st_rdev); 778 n = snprintf(buf, blen, "%.*s,%.*s", 779 l1, majdev, l2, mindev); 780 return (n >= blen ? blen : n); 781 } else { 782 return (format1(st, file, fmt, flen, buf, blen, 783 flags, size, prec, ofmt, 0, SHOW_st_size)); 784 } 785 /*NOTREACHED*/ 786 default: 787 errx(1, "%.*s: bad format", (int)flen, fmt); 788 } 789 790 /* 791 * If a subdatum was specified but not supported, or an output 792 * format was selected that is not supported, that's an error. 793 */ 794 if (hilo != 0 || (ofmt & formats) == 0) 795 errx(1, "%.*s: bad format", (int)flen, fmt); 796 797 /* 798 * Assemble the format string for passing to printf(3). 799 */ 800 lfmt[0] = '\0'; 801 (void)strlcat(lfmt, "%", sizeof(lfmt)); 802 if (flags & FLAG_POUND) 803 (void)strlcat(lfmt, "#", sizeof(lfmt)); 804 if (flags & FLAG_SPACE) 805 (void)strlcat(lfmt, " ", sizeof(lfmt)); 806 if (flags & FLAG_PLUS) 807 (void)strlcat(lfmt, "+", sizeof(lfmt)); 808 if (flags & FLAG_MINUS) 809 (void)strlcat(lfmt, "-", sizeof(lfmt)); 810 if (flags & FLAG_ZERO) 811 (void)strlcat(lfmt, "0", sizeof(lfmt)); 812 813 /* 814 * Only the timespecs support the FLOAT output format, and that 815 * requires work that differs from the other formats. 816 */ 817 if (ofmt == FMTF_FLOAT) { 818 /* 819 * Nothing after the decimal point, so just print seconds. 820 */ 821 if (prec == 0) { 822 if (size != -1) { 823 (void)snprintf(tmp, sizeof(tmp), "%d", size); 824 (void)strlcat(lfmt, tmp, sizeof(lfmt)); 825 } 826 (void)strlcat(lfmt, "d", sizeof(lfmt)); 827 n = snprintf(buf, blen, lfmt, secs); 828 return (n >= blen ? blen : n); 829 } 830 831 /* 832 * Unspecified precision gets all the precision we have: 833 * 9 digits. 834 */ 835 if (prec == -1) 836 prec = 9; 837 838 /* 839 * Adjust the size for the decimal point and the digits 840 * that will follow. 841 */ 842 size -= prec + 1; 843 844 /* 845 * Any leftover size that's legitimate will be used. 846 */ 847 if (size > 0) { 848 (void)snprintf(tmp, sizeof(tmp), "%d", size); 849 (void)strlcat(lfmt, tmp, sizeof(lfmt)); 850 } 851 (void)strlcat(lfmt, "d", sizeof(lfmt)); 852 853 /* 854 * The stuff after the decimal point always needs zero 855 * filling. 856 */ 857 (void)strlcat(lfmt, ".%0", sizeof(lfmt)); 858 859 /* 860 * We can "print" at most nine digits of precision. The 861 * rest we will pad on at the end. 862 */ 863 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 864 (void)strlcat(lfmt, tmp, sizeof(lfmt)); 865 866 /* 867 * For precision of less that nine digits, trim off the 868 * less significant figures. 869 */ 870 for (; prec < 9; prec++) 871 nsecs /= 10; 872 873 /* 874 * Use the format, and then tack on any zeroes that 875 * might be required to make up the requested precision. 876 */ 877 l = snprintf(buf, blen, lfmt, secs, nsecs); 878 if (l >= blen) 879 return (l); 880 for (; prec > 9 && l < blen; prec--, l++) 881 (void)strlcat(buf, "0", blen); 882 return (l); 883 } 884 885 /* 886 * Add on size and precision, if specified, to the format. 887 */ 888 if (size != -1) { 889 (void)snprintf(tmp, sizeof(tmp), "%d", size); 890 (void)strlcat(lfmt, tmp, sizeof(lfmt)); 891 } 892 if (prec != -1) { 893 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 894 (void)strlcat(lfmt, tmp, sizeof(lfmt)); 895 } 896 897 /* 898 * String output uses the temporary sdata. 899 */ 900 if (ofmt == FMTF_STRING) { 901 if (sdata == NULL) 902 errx(1, "%.*s: bad format", (int)flen, fmt); 903 (void)strlcat(lfmt, "s", sizeof(lfmt)); 904 n = snprintf(buf, blen, lfmt, sdata); 905 return (n >= blen ? blen : n); 906 } 907 908 /* 909 * Ensure that sign extension does not cause bad looking output 910 * for some forms. 911 */ 912 if (small && ofmt != FMTF_DECIMAL) 913 data = (u_int32_t)data; 914 915 /* 916 * The four "numeric" output forms. 917 */ 918 (void)strlcat(lfmt, "ll", sizeof(lfmt)); 919 switch (ofmt) { 920 case FMTF_DECIMAL: (void)strlcat(lfmt, "d", sizeof(lfmt)); break; 921 case FMTF_OCTAL: (void)strlcat(lfmt, "o", sizeof(lfmt)); break; 922 case FMTF_UNSIGNED: (void)strlcat(lfmt, "u", sizeof(lfmt)); break; 923 case FMTF_HEX: (void)strlcat(lfmt, "x", sizeof(lfmt)); break; 924 } 925 926 n = snprintf(buf, blen, lfmt, data); 927 return (n >= blen ? blen : n); 928 } 929