stat.c revision 1.11
1 /* $NetBSD: stat.c,v 1.11 2003/07/20 14:12:13 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 2002 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #if defined(__RCSID) && !defined(lint) 41 __RCSID("$NetBSD: stat.c,v 1.11 2003/07/20 14:12:13 lukem Exp $"); 42 #endif 43 44 #if HAVE_CONFIG_H 45 #include "config.h" 46 #else 47 #define HAVE_STRUCT_STAT_ST_FLAGS 1 48 #endif 49 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 53 #include <ctype.h> 54 #include <err.h> 55 #include <grp.h> 56 #include <limits.h> 57 #include <pwd.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <time.h> 62 #include <unistd.h> 63 64 #define DEF_FORMAT \ 65 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" \"%SB\" %k %b %N" 66 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c %B %k %b %N" 67 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 68 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 69 #define SHELL_FORMAT \ 70 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 71 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 72 "st_atime=%a st_mtime=%m st_ctime=%c st_birthtime=%B " \ 73 "st_blksize=%k st_blocks=%b" 74 #define LINUX_FORMAT \ 75 " File: \"%N\"%n" \ 76 " Size: %-11z FileType: %HT%n" \ 77 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 78 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 79 "Access: %Sa%n" \ 80 "Modify: %Sm%n" \ 81 "Change: %Sc" 82 83 #define TIME_FORMAT "%b %e %T %Y" 84 85 #define FLAG_POUND 0x01 86 #define FLAG_SPACE 0x02 87 #define FLAG_PLUS 0x04 88 #define FLAG_ZERO 0x08 89 #define FLAG_MINUS 0x10 90 91 /* 92 * These format characters must all be unique, except the magic one. 93 */ 94 #define FMT_MAGIC '%' 95 #define FMT_DOT '.' 96 97 #define SIMPLE_NEWLINE 'n' 98 #define SIMPLE_TAB 't' 99 #define SIMPLE_PERCENT '%' 100 #define SIMPLE_NUMBER '@' 101 102 #define FMT_POUND '#' 103 #define FMT_SPACE ' ' 104 #define FMT_PLUS '+' 105 #define FMT_ZERO '0' 106 #define FMT_MINUS '-' 107 108 #define FMT_DECIMAL 'D' 109 #define FMT_OCTAL 'O' 110 #define FMT_UNSIGNED 'U' 111 #define FMT_HEX 'X' 112 #define FMT_FLOAT 'F' 113 #define FMT_STRING 'S' 114 115 #define FMTF_DECIMAL 0x01 116 #define FMTF_OCTAL 0x02 117 #define FMTF_UNSIGNED 0x04 118 #define FMTF_HEX 0x08 119 #define FMTF_FLOAT 0x10 120 #define FMTF_STRING 0x20 121 122 #define HIGH_PIECE 'H' 123 #define MIDDLE_PIECE 'M' 124 #define LOW_PIECE 'L' 125 126 #define SHOW_st_dev 'd' 127 #define SHOW_st_ino 'i' 128 #define SHOW_st_mode 'p' 129 #define SHOW_st_nlink 'l' 130 #define SHOW_st_uid 'u' 131 #define SHOW_st_gid 'g' 132 #define SHOW_st_rdev 'r' 133 #define SHOW_st_atime 'a' 134 #define SHOW_st_mtime 'm' 135 #define SHOW_st_ctime 'c' 136 #define SHOW_st_btime 'B' 137 #define SHOW_st_size 'z' 138 #define SHOW_st_blocks 'b' 139 #define SHOW_st_blksize 'k' 140 #define SHOW_st_flags 'f' 141 #define SHOW_st_gen 'v' 142 #define SHOW_symlink 'Y' 143 #define SHOW_filetype 'T' 144 #define SHOW_filename 'N' 145 #define SHOW_sizerdev 'Z' 146 147 void usage(const char *); 148 void output(const struct stat *, const char *, 149 const char *, int, int, int); 150 int format1(const struct stat *, /* stat info */ 151 const char *, /* the file name */ 152 const char *, int, /* the format string itself */ 153 char *, size_t, /* a place to put the output */ 154 int, int, int, int, /* the parsed format */ 155 int, int); 156 157 char *timefmt; 158 int linkfail; 159 160 #define addchar(s, c, nl) \ 161 do { \ 162 (void)fputc((c), (s)); \ 163 (*nl) = ((c) == '\n'); \ 164 } while (0/*CONSTCOND*/) 165 166 int 167 main(int argc, char *argv[]) 168 { 169 struct stat st; 170 int ch, rc, errs, am_readlink; 171 int lsF, fmtchar, usestat, fn, nonl, quiet; 172 char *statfmt, *options, *synopsis; 173 174 am_readlink = 0; 175 lsF = 0; 176 fmtchar = '\0'; 177 usestat = 0; 178 nonl = 0; 179 quiet = 0; 180 linkfail = 0; 181 statfmt = NULL; 182 timefmt = NULL; 183 184 if (strcmp(getprogname(), "readlink") == 0) { 185 am_readlink = 1; 186 options = "n"; 187 synopsis = "[-n] [file ...]"; 188 statfmt = "%Y"; 189 fmtchar = 'f'; 190 quiet = 1; 191 } else { 192 options = "f:FlLnqrst:x"; 193 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 194 } 195 196 while ((ch = getopt(argc, argv, options)) != -1) 197 switch (ch) { 198 case 'F': 199 lsF = 1; 200 break; 201 case 'L': 202 usestat = 1; 203 break; 204 case 'n': 205 nonl = 1; 206 break; 207 case 'q': 208 quiet = 1; 209 break; 210 case 'f': 211 statfmt = optarg; 212 /* FALLTHROUGH */ 213 case 'l': 214 case 'r': 215 case 's': 216 case 'x': 217 if (fmtchar != 0) 218 errx(1, "can't use format '%c' with '%c'", 219 fmtchar, ch); 220 fmtchar = ch; 221 break; 222 case 't': 223 timefmt = optarg; 224 break; 225 default: 226 usage(synopsis); 227 } 228 229 argc -= optind; 230 argv += optind; 231 fn = 1; 232 233 if (fmtchar == '\0') { 234 if (lsF) 235 fmtchar = 'l'; 236 else { 237 fmtchar = 'f'; 238 statfmt = DEF_FORMAT; 239 } 240 } 241 242 if (lsF && fmtchar != 'l') 243 errx(1, "can't use format '%c' with -F", fmtchar); 244 245 switch (fmtchar) { 246 case 'f': 247 /* statfmt already set */ 248 break; 249 case 'l': 250 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 251 break; 252 case 'r': 253 statfmt = RAW_FORMAT; 254 break; 255 case 's': 256 statfmt = SHELL_FORMAT; 257 break; 258 case 'x': 259 statfmt = LINUX_FORMAT; 260 if (timefmt == NULL) 261 timefmt = "%c"; 262 break; 263 default: 264 usage(synopsis); 265 /*NOTREACHED*/ 266 } 267 268 if (timefmt == NULL) 269 timefmt = TIME_FORMAT; 270 271 errs = 0; 272 do { 273 if (argc == 0) 274 rc = fstat(STDIN_FILENO, &st); 275 else if (usestat) 276 rc = stat(argv[0], &st); 277 else 278 rc = lstat(argv[0], &st); 279 280 if (rc == -1) { 281 errs = 1; 282 linkfail = 1; 283 if (!quiet) 284 warn("%s: stat", 285 argc == 0 ? "(stdin)" : argv[0]); 286 } 287 else 288 output(&st, argv[0], statfmt, fn, nonl, quiet); 289 290 argv++; 291 argc--; 292 fn++; 293 } while (argc > 0); 294 295 return (am_readlink ? linkfail : errs); 296 } 297 298 void 299 usage(const char *synopsis) 300 { 301 302 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 303 exit(1); 304 } 305 306 /* 307 * Parses a format string. 308 */ 309 void 310 output(const struct stat *st, const char *file, 311 const char *statfmt, int fn, int nonl, int quiet) 312 { 313 int flags, size, prec, ofmt, hilo, what; 314 char buf[PATH_MAX]; 315 const char *subfmt; 316 int nl, t, i; 317 318 nl = 1; 319 while (*statfmt != '\0') { 320 321 /* 322 * Non-format characters go straight out. 323 */ 324 if (*statfmt != FMT_MAGIC) { 325 addchar(stdout, *statfmt, &nl); 326 statfmt++; 327 continue; 328 } 329 330 /* 331 * The current format "substring" starts here, 332 * and then we skip the magic. 333 */ 334 subfmt = statfmt; 335 statfmt++; 336 337 /* 338 * Some simple one-character "formats". 339 */ 340 switch (*statfmt) { 341 case SIMPLE_NEWLINE: 342 addchar(stdout, '\n', &nl); 343 statfmt++; 344 continue; 345 case SIMPLE_TAB: 346 addchar(stdout, '\t', &nl); 347 statfmt++; 348 continue; 349 case SIMPLE_PERCENT: 350 addchar(stdout, '%', &nl); 351 statfmt++; 352 continue; 353 case SIMPLE_NUMBER: { 354 char num[12], *p; 355 356 snprintf(num, sizeof(num), "%d", fn); 357 for (p = &num[0]; *p; p++) 358 addchar(stdout, *p, &nl); 359 statfmt++; 360 continue; 361 } 362 } 363 364 /* 365 * This must be an actual format string. Format strings are 366 * similar to printf(3) formats up to a point, and are of 367 * the form: 368 * 369 * % required start of format 370 * [-# +0] opt. format characters 371 * size opt. field width 372 * . opt. decimal separator, followed by 373 * prec opt. precision 374 * fmt opt. output specifier (string, numeric, etc.) 375 * sub opt. sub field specifier (high, middle, low) 376 * datum required field specifier (size, mode, etc) 377 * 378 * Only the % and the datum selector are required. All data 379 * have reasonable default output forms. The "sub" specifier 380 * only applies to certain data (mode, dev, rdev, filetype). 381 * The symlink output defaults to STRING, yet will only emit 382 * the leading " -> " if STRING is explicitly specified. The 383 * sizerdev datum will generate rdev output for character or 384 * block devices, and size output for all others. 385 */ 386 flags = 0; 387 do { 388 if (*statfmt == FMT_POUND) 389 flags |= FLAG_POUND; 390 else if (*statfmt == FMT_SPACE) 391 flags |= FLAG_SPACE; 392 else if (*statfmt == FMT_PLUS) 393 flags |= FLAG_PLUS; 394 else if (*statfmt == FMT_ZERO) 395 flags |= FLAG_ZERO; 396 else if (*statfmt == FMT_MINUS) 397 flags |= FLAG_MINUS; 398 else 399 break; 400 statfmt++; 401 } while (1/*CONSTCOND*/); 402 403 size = -1; 404 if (isdigit((unsigned)*statfmt)) { 405 size = 0; 406 while (isdigit((unsigned)*statfmt)) { 407 size = (size * 10) + (*statfmt - '0'); 408 statfmt++; 409 if (size < 0) 410 goto badfmt; 411 } 412 } 413 414 prec = -1; 415 if (*statfmt == FMT_DOT) { 416 statfmt++; 417 418 prec = 0; 419 while (isdigit((unsigned)*statfmt)) { 420 prec = (prec * 10) + (*statfmt - '0'); 421 statfmt++; 422 if (prec < 0) 423 goto badfmt; 424 } 425 } 426 427 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 428 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 429 switch (*statfmt) { 430 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 431 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 432 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 433 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 434 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 435 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 436 default: 437 ofmt = 0; 438 break; 439 } 440 441 switch (*statfmt) { 442 fmtcase(hilo, HIGH_PIECE); 443 fmtcase(hilo, MIDDLE_PIECE); 444 fmtcase(hilo, LOW_PIECE); 445 default: 446 hilo = 0; 447 break; 448 } 449 450 switch (*statfmt) { 451 fmtcase(what, SHOW_st_dev); 452 fmtcase(what, SHOW_st_ino); 453 fmtcase(what, SHOW_st_mode); 454 fmtcase(what, SHOW_st_nlink); 455 fmtcase(what, SHOW_st_uid); 456 fmtcase(what, SHOW_st_gid); 457 fmtcase(what, SHOW_st_rdev); 458 fmtcase(what, SHOW_st_atime); 459 fmtcase(what, SHOW_st_mtime); 460 fmtcase(what, SHOW_st_ctime); 461 fmtcase(what, SHOW_st_btime); 462 fmtcase(what, SHOW_st_size); 463 fmtcase(what, SHOW_st_blocks); 464 fmtcase(what, SHOW_st_blksize); 465 fmtcase(what, SHOW_st_flags); 466 fmtcase(what, SHOW_st_gen); 467 fmtcase(what, SHOW_symlink); 468 fmtcase(what, SHOW_filetype); 469 fmtcase(what, SHOW_filename); 470 fmtcase(what, SHOW_sizerdev); 471 default: 472 goto badfmt; 473 } 474 #undef fmtcasef 475 #undef fmtcase 476 477 t = format1(st, 478 file, 479 subfmt, statfmt - subfmt, 480 buf, sizeof(buf), 481 flags, size, prec, ofmt, hilo, what); 482 483 for (i = 0; i < t && i < sizeof(buf); i++) 484 addchar(stdout, buf[i], &nl); 485 486 continue; 487 488 badfmt: 489 errx(1, "%.*s: bad format", 490 (int)(statfmt - subfmt + 1), subfmt); 491 } 492 493 if (!nl && !nonl) 494 (void)fputc('\n', stdout); 495 (void)fflush(stdout); 496 } 497 498 /* 499 * Arranges output according to a single parsed format substring. 500 */ 501 int 502 format1(const struct stat *st, 503 const char *file, 504 const char *fmt, int flen, 505 char *buf, size_t blen, 506 int flags, int size, int prec, int ofmt, 507 int hilo, int what) 508 { 509 u_int64_t data; 510 char *sdata, lfmt[24], tmp[20]; 511 char smode[12], sid[12], path[PATH_MAX + 4]; 512 struct passwd *pw; 513 struct group *gr; 514 const struct timespec *tsp; 515 struct timespec ts; 516 struct tm *tm; 517 int l, small, formats; 518 519 tsp = NULL; 520 formats = 0; 521 small = 0; 522 523 /* 524 * First, pick out the data and tweak it based on hilo or 525 * specified output format (symlink output only). 526 */ 527 switch (what) { 528 case SHOW_st_dev: 529 case SHOW_st_rdev: 530 small = (sizeof(st->st_dev) == 4); 531 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 532 sdata = (what == SHOW_st_dev) ? 533 devname(st->st_dev, S_IFBLK) : 534 devname(st->st_rdev, 535 S_ISCHR(st->st_mode) ? S_IFCHR : 536 S_ISBLK(st->st_mode) ? S_IFBLK : 537 0U); 538 if (sdata == NULL) 539 sdata = "???"; 540 if (hilo == HIGH_PIECE) { 541 data = major(data); 542 hilo = 0; 543 } 544 else if (hilo == LOW_PIECE) { 545 data = minor((unsigned)data); 546 hilo = 0; 547 } 548 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 549 FMTF_STRING; 550 if (ofmt == 0) 551 ofmt = FMTF_UNSIGNED; 552 break; 553 case SHOW_st_ino: 554 small = (sizeof(st->st_ino) == 4); 555 data = st->st_ino; 556 sdata = NULL; 557 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 558 if (ofmt == 0) 559 ofmt = FMTF_UNSIGNED; 560 break; 561 case SHOW_st_mode: 562 small = (sizeof(st->st_mode) == 4); 563 data = st->st_mode; 564 strmode(st->st_mode, smode); 565 sdata = smode; 566 l = strlen(sdata); 567 if (sdata[l - 1] == ' ') 568 sdata[--l] = '\0'; 569 if (hilo == HIGH_PIECE) { 570 data >>= 12; 571 sdata += 1; 572 sdata[3] = '\0'; 573 hilo = 0; 574 } 575 else if (hilo == MIDDLE_PIECE) { 576 data = (data >> 9) & 07; 577 sdata += 4; 578 sdata[3] = '\0'; 579 hilo = 0; 580 } 581 else if (hilo == LOW_PIECE) { 582 data &= 0777; 583 sdata += 7; 584 sdata[3] = '\0'; 585 hilo = 0; 586 } 587 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 588 FMTF_STRING; 589 if (ofmt == 0) 590 ofmt = FMTF_OCTAL; 591 break; 592 case SHOW_st_nlink: 593 small = (sizeof(st->st_dev) == 4); 594 data = st->st_nlink; 595 sdata = NULL; 596 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 597 if (ofmt == 0) 598 ofmt = FMTF_UNSIGNED; 599 break; 600 case SHOW_st_uid: 601 small = (sizeof(st->st_uid) == 4); 602 data = st->st_uid; 603 if ((pw = getpwuid(st->st_uid)) != NULL) 604 sdata = pw->pw_name; 605 else { 606 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 607 sdata = sid; 608 } 609 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 610 FMTF_STRING; 611 if (ofmt == 0) 612 ofmt = FMTF_UNSIGNED; 613 break; 614 case SHOW_st_gid: 615 small = (sizeof(st->st_gid) == 4); 616 data = st->st_gid; 617 if ((gr = getgrgid(st->st_gid)) != NULL) 618 sdata = gr->gr_name; 619 else { 620 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 621 sdata = sid; 622 } 623 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 624 FMTF_STRING; 625 if (ofmt == 0) 626 ofmt = FMTF_UNSIGNED; 627 break; 628 case SHOW_st_atime: 629 tsp = &st->st_atimespec; 630 /* FALLTHROUGH */ 631 case SHOW_st_mtime: 632 if (tsp == NULL) 633 tsp = &st->st_mtimespec; 634 /* FALLTHROUGH */ 635 case SHOW_st_ctime: 636 if (tsp == NULL) 637 tsp = &st->st_ctimespec; 638 /* FALLTHROUGH */ 639 case SHOW_st_btime: 640 if (tsp == NULL) 641 tsp = &st->st_birthtimespec; 642 ts = *tsp; /* copy so we can muck with it */ 643 small = (sizeof(ts.tv_sec) == 4); 644 data = ts.tv_sec; 645 small = 1; 646 tm = localtime(&ts.tv_sec); 647 (void)strftime(path, sizeof(path), timefmt, tm); 648 sdata = path; 649 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 650 FMTF_FLOAT | FMTF_STRING; 651 if (ofmt == 0) 652 ofmt = FMTF_DECIMAL; 653 break; 654 case SHOW_st_size: 655 small = (sizeof(st->st_size) == 4); 656 data = st->st_size; 657 sdata = NULL; 658 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 659 if (ofmt == 0) 660 ofmt = FMTF_UNSIGNED; 661 break; 662 case SHOW_st_blocks: 663 small = (sizeof(st->st_blocks) == 4); 664 data = st->st_blocks; 665 sdata = NULL; 666 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 667 if (ofmt == 0) 668 ofmt = FMTF_UNSIGNED; 669 break; 670 case SHOW_st_blksize: 671 small = (sizeof(st->st_blksize) == 4); 672 data = st->st_blksize; 673 sdata = NULL; 674 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 675 if (ofmt == 0) 676 ofmt = FMTF_UNSIGNED; 677 break; 678 #if HAVE_STRUCT_STAT_ST_FLAGS 679 case SHOW_st_flags: 680 small = (sizeof(st->st_flags) == 4); 681 data = st->st_flags; 682 sdata = NULL; 683 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 684 if (ofmt == 0) 685 ofmt = FMTF_UNSIGNED; 686 break; 687 #endif 688 case SHOW_st_gen: 689 small = (sizeof(st->st_gen) == 4); 690 data = st->st_gen; 691 sdata = NULL; 692 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 693 if (ofmt == 0) 694 ofmt = FMTF_UNSIGNED; 695 break; 696 case SHOW_symlink: 697 small = 0; 698 data = 0; 699 if (S_ISLNK(st->st_mode)) { 700 snprintf(path, sizeof(path), " -> "); 701 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 702 if (l == -1) { 703 linkfail = 1; 704 l = 0; 705 path[0] = '\0'; 706 } 707 path[l + 4] = '\0'; 708 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 709 } 710 else { 711 linkfail = 1; 712 sdata = ""; 713 } 714 formats = FMTF_STRING; 715 if (ofmt == 0) 716 ofmt = FMTF_STRING; 717 break; 718 case SHOW_filetype: 719 small = 0; 720 data = 0; 721 sdata = smode; 722 sdata[0] = '\0'; 723 if (hilo == 0 || hilo == LOW_PIECE) { 724 switch (st->st_mode & S_IFMT) { 725 case S_IFIFO: (void)strcat(sdata, "|"); break; 726 case S_IFDIR: (void)strcat(sdata, "/"); break; 727 case S_IFREG: 728 if (st->st_mode & 729 (S_IXUSR | S_IXGRP | S_IXOTH)) 730 (void)strcat(sdata, "*"); 731 break; 732 case S_IFLNK: (void)strcat(sdata, "@"); break; 733 case S_IFSOCK: (void)strcat(sdata, "="); break; 734 case S_IFWHT: (void)strcat(sdata, "%"); break; 735 } 736 hilo = 0; 737 } 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 case S_IFWHT: sdata = "Whiteout File"; break; 748 default: sdata = "???"; break; 749 } 750 hilo = 0; 751 } 752 formats = FMTF_STRING; 753 if (ofmt == 0) 754 ofmt = FMTF_STRING; 755 break; 756 case SHOW_filename: 757 small = 0; 758 data = 0; 759 if (file == NULL) 760 (void)strncpy(path, "(stdin)", sizeof(path)); 761 else 762 (void)strncpy(path, file, sizeof(path)); 763 sdata = path; 764 formats = FMTF_STRING; 765 if (ofmt == 0) 766 ofmt = FMTF_STRING; 767 break; 768 case SHOW_sizerdev: 769 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 770 char majdev[20], mindev[20]; 771 int l1, l2; 772 773 l1 = format1(st, 774 file, 775 fmt, flen, 776 majdev, sizeof(majdev), 777 flags, size, prec, 778 ofmt, HIGH_PIECE, SHOW_st_rdev); 779 l2 = format1(st, 780 file, 781 fmt, flen, 782 mindev, sizeof(mindev), 783 flags, size, prec, 784 ofmt, LOW_PIECE, SHOW_st_rdev); 785 return (snprintf(buf, blen, "%.*s,%.*s", 786 l1, majdev, l2, mindev)); 787 } 788 else { 789 return (format1(st, 790 file, 791 fmt, flen, 792 buf, blen, 793 flags, size, prec, 794 ofmt, 0, SHOW_st_size)); 795 } 796 /*NOTREACHED*/ 797 default: 798 errx(1, "%.*s: bad format", (int)flen, fmt); 799 } 800 801 /* 802 * If a subdatum was specified but not supported, or an output 803 * format was selected that is not supported, that's an error. 804 */ 805 if (hilo != 0 || (ofmt & formats) == 0) 806 errx(1, "%.*s: bad format", (int)flen, fmt); 807 808 /* 809 * Assemble the format string for passing to printf(3). 810 */ 811 lfmt[0] = '\0'; 812 (void)strcat(lfmt, "%"); 813 if (flags & FLAG_POUND) 814 (void)strcat(lfmt, "#"); 815 if (flags & FLAG_SPACE) 816 (void)strcat(lfmt, " "); 817 if (flags & FLAG_PLUS) 818 (void)strcat(lfmt, "+"); 819 if (flags & FLAG_MINUS) 820 (void)strcat(lfmt, "-"); 821 if (flags & FLAG_ZERO) 822 (void)strcat(lfmt, "0"); 823 824 /* 825 * Only the timespecs support the FLOAT output format, and that 826 * requires work that differs from the other formats. 827 */ 828 if (ofmt == FMTF_FLOAT) { 829 /* 830 * Nothing after the decimal point, so just print seconds. 831 */ 832 if (prec == 0) { 833 if (size != -1) { 834 (void)snprintf(tmp, sizeof(tmp), "%d", size); 835 (void)strcat(lfmt, tmp); 836 } 837 (void)strcat(lfmt, "d"); 838 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 839 } 840 841 /* 842 * Unspecified precision gets all the precision we have: 843 * 9 digits. 844 */ 845 if (prec == -1) 846 prec = 9; 847 848 /* 849 * Adjust the size for the decimal point and the digits 850 * that will follow. 851 */ 852 size -= prec + 1; 853 854 /* 855 * Any leftover size that's legitimate will be used. 856 */ 857 if (size > 0) { 858 (void)snprintf(tmp, sizeof(tmp), "%d", size); 859 (void)strcat(lfmt, tmp); 860 } 861 (void)strcat(lfmt, "d"); 862 863 /* 864 * The stuff after the decimal point always needs zero 865 * filling. 866 */ 867 (void)strcat(lfmt, ".%0"); 868 869 /* 870 * We can "print" at most nine digits of precision. The 871 * rest we will pad on at the end. 872 */ 873 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 874 (void)strcat(lfmt, tmp); 875 876 /* 877 * For precision of less that nine digits, trim off the 878 * less significant figures. 879 */ 880 for (; prec < 9; prec++) 881 ts.tv_nsec /= 10; 882 883 /* 884 * Use the format, and then tack on any zeroes that 885 * might be required to make up the requested precision. 886 */ 887 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 888 for (; prec > 9 && l < blen; prec--, l++) 889 (void)strcat(buf, "0"); 890 return (l); 891 } 892 893 /* 894 * Add on size and precision, if specified, to the format. 895 */ 896 if (size != -1) { 897 (void)snprintf(tmp, sizeof(tmp), "%d", size); 898 (void)strcat(lfmt, tmp); 899 } 900 if (prec != -1) { 901 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 902 (void)strcat(lfmt, tmp); 903 } 904 905 /* 906 * String output uses the temporary sdata. 907 */ 908 if (ofmt == FMTF_STRING) { 909 if (sdata == NULL) 910 errx(1, "%.*s: bad format", (int)flen, fmt); 911 (void)strcat(lfmt, "s"); 912 return (snprintf(buf, blen, lfmt, sdata)); 913 } 914 915 /* 916 * Ensure that sign extension does not cause bad looking output 917 * for some forms. 918 */ 919 if (small && ofmt != FMTF_DECIMAL) 920 data = (u_int32_t)data; 921 922 /* 923 * The four "numeric" output forms. 924 */ 925 (void)strcat(lfmt, "ll"); 926 switch (ofmt) { 927 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 928 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 929 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 930 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 931 } 932 933 return (snprintf(buf, blen, lfmt, data)); 934 } 935
Indexes created Mon Sep 22 13:09:51 GMT 2025