stat.c revision 1.4
1 /* $NetBSD: stat.c,v 1.4 2002/07/08 18:48:42 atatat 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 #ifndef lint 41 __RCSID("$NetBSD: stat.c,v 1.4 2002/07/08 18:48:42 atatat Exp $"); 42 #endif 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/stat.h> 47 #include <unistd.h> 48 #include <fcntl.h> 49 #include <err.h> 50 #include <string.h> 51 #include <stdio.h> 52 #include <ctype.h> 53 #include <stddef.h> 54 #include <stdlib.h> 55 #include <pwd.h> 56 #include <grp.h> 57 58 #define DEF_FORMAT \ 59 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" %k %b %N" 60 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c %k %b %N" 61 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 62 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 63 #define SHELL_FORMAT \ 64 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 65 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 66 "st_atimespec=%a st_mtimespec=%m st_ctimespec=%c " \ 67 "st_blksize=%k st_blocks=%b" 68 #define LINUX_FORMAT \ 69 " File: \"%N\"%n" \ 70 " Size: %-11z FileType: %HT%n" \ 71 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 72 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 73 "Access: %Sa%n" \ 74 "Modify: %Sm%n" \ 75 "Change: %Sc" 76 77 #define TIME_FORMAT "%b %e %T %Y" 78 79 #define FLAG_POUND 0x01 80 #define FLAG_SPACE 0x02 81 #define FLAG_PLUS 0x04 82 #define FLAG_ZERO 0x08 83 #define FLAG_MINUS 0x10 84 85 /* 86 * These format characters must all be unique, except the magic one. 87 */ 88 #define FMT_MAGIC '%' 89 #define FMT_DOT '.' 90 91 #define SIMPLE_NEWLINE 'n' 92 #define SIMPLE_TAB 't' 93 #define SIMPLE_PERCENT '%' 94 #define SIMPLE_NUMBER '@' 95 96 #define FMT_POUND '#' 97 #define FMT_SPACE ' ' 98 #define FMT_PLUS '+' 99 #define FMT_ZERO '0' 100 #define FMT_MINUS '-' 101 102 #define FMT_DECIMAL 'D' 103 #define FMT_OCTAL 'O' 104 #define FMT_UNSIGNED 'U' 105 #define FMT_HEX 'X' 106 #define FMT_FLOAT 'F' 107 #define FMT_STRING 'S' 108 109 #define HIGH_PIECE 'H' 110 #define MIDDLE_PIECE 'M' 111 #define LOW_PIECE 'L' 112 113 #define SHOW_st_dev 'd' 114 #define SHOW_st_ino 'i' 115 #define SHOW_st_mode 'p' 116 #define SHOW_st_nlink 'l' 117 #define SHOW_st_uid 'u' 118 #define SHOW_st_gid 'g' 119 #define SHOW_st_rdev 'r' 120 #define SHOW_st_atime 'a' 121 #define SHOW_st_mtime 'm' 122 #define SHOW_st_ctime 'c' 123 #define SHOW_st_size 'z' 124 #define SHOW_st_blocks 'b' 125 #define SHOW_st_blksize 'k' 126 #define SHOW_st_flags 'f' 127 #define SHOW_st_gen 'v' 128 #define SHOW_symlink 'Y' 129 #define SHOW_filetype 'T' 130 #define SHOW_filename 'N' 131 #define SHOW_sizerdev 'Z' 132 133 void usage(const char *); 134 void output(const struct stat *, const char *, 135 const char *, int, int, int); 136 int format1(const struct stat *, /* stat info */ 137 const char *, /* the file name */ 138 const char *, int, /* the format string itself */ 139 char *, size_t, /* a place to put the output */ 140 int, int, int, int, /* the parsed format */ 141 int, int); 142 143 char *timefmt; 144 int linkfail; 145 146 #define addchar(s, c, nl) \ 147 do { \ 148 (void)fputc((c), (s)); \ 149 (*nl) = ((c) == '\n'); \ 150 } while (0/*CONSTCOND*/) 151 152 int 153 main(int argc, char *argv[]) 154 { 155 struct stat st; 156 int ch, rc, errs, am_readlink; 157 int lsF, fmtchar, usestat, fn, nonl, quiet; 158 char *statfmt, *options, *synopsis; 159 160 am_readlink = 0; 161 lsF = 0; 162 fmtchar = '\0'; 163 usestat = 0; 164 nonl = 0; 165 quiet = 0; 166 linkfail = 0; 167 statfmt = NULL; 168 timefmt = NULL; 169 170 if (strcmp(getprogname(), "readlink") == 0) { 171 am_readlink = 1; 172 options = "n"; 173 synopsis = "[-n] [file ...]"; 174 statfmt = "%Y"; 175 fmtchar = 'f'; 176 quiet = 1; 177 } else { 178 options = "f:FlLnqrst:x"; 179 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 180 } 181 182 while ((ch = getopt(argc, argv, options)) != -1) 183 switch (ch) { 184 case 'F': 185 lsF = 1; 186 break; 187 case 'L': 188 usestat = 1; 189 break; 190 case 'n': 191 nonl = 1; 192 break; 193 case 'q': 194 quiet = 1; 195 break; 196 case 'f': 197 statfmt = optarg; 198 /* FALLTHROUGH */ 199 case 'l': 200 case 'r': 201 case 's': 202 case 'x': 203 if (fmtchar != 0) 204 errx(1, "can't use format '%c' with '%c'", 205 fmtchar, ch); 206 fmtchar = ch; 207 break; 208 case 't': 209 timefmt = optarg; 210 break; 211 default: 212 usage(synopsis); 213 } 214 215 argc -= optind; 216 argv += optind; 217 fn = 1; 218 219 if (fmtchar == '\0') { 220 if (lsF) 221 fmtchar = 'l'; 222 else { 223 fmtchar = 'f'; 224 statfmt = DEF_FORMAT; 225 } 226 } 227 228 if (lsF && fmtchar != 'l') 229 errx(1, "can't use format '%c' with -F", fmtchar); 230 231 switch (fmtchar) { 232 case 'f': 233 /* statfmt already set */ 234 break; 235 case 'l': 236 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 237 break; 238 case 'r': 239 statfmt = RAW_FORMAT; 240 break; 241 case 's': 242 statfmt = SHELL_FORMAT; 243 break; 244 case 'x': 245 statfmt = LINUX_FORMAT; 246 if (timefmt == NULL) 247 timefmt = "%c"; 248 break; 249 default: 250 usage(synopsis); 251 /*NOTREACHED*/ 252 } 253 254 if (timefmt == NULL) 255 timefmt = TIME_FORMAT; 256 257 errs = 0; 258 do { 259 if (argc == 0) 260 rc = fstat(STDIN_FILENO, &st); 261 else if (usestat) 262 rc = stat(argv[0], &st); 263 else 264 rc = lstat(argv[0], &st); 265 266 if (rc == -1) { 267 errs = 1; 268 linkfail = 1; 269 if (!quiet) 270 warn("%s: stat", 271 argc == 0 ? "(stdin)" : argv[0]); 272 } 273 else 274 output(&st, argv[0], statfmt, fn, nonl, quiet); 275 276 argv++; 277 argc--; 278 fn++; 279 } while (argc > 0); 280 281 return (am_readlink ? linkfail : errs); 282 } 283 284 void 285 usage(const char *synopsis) 286 { 287 288 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 289 exit(1); 290 } 291 292 /* 293 * Parses a format string. 294 */ 295 void 296 output(const struct stat *st, const char *file, 297 const char *statfmt, int fn, int nonl, int quiet) 298 { 299 int flags, size, prec, ofmt, hilo, what; 300 char buf[MAXPATHLEN]; 301 const char *subfmt; 302 int nl, t, i; 303 304 nl = 1; 305 while (*statfmt != '\0') { 306 307 /* 308 * Non-format characters go straight out. 309 */ 310 if (*statfmt != FMT_MAGIC) { 311 addchar(stdout, *statfmt, &nl); 312 statfmt++; 313 continue; 314 } 315 316 /* 317 * The current format "substring" starts here, 318 * and then we skip the magic. 319 */ 320 subfmt = statfmt; 321 statfmt++; 322 323 /* 324 * Some simple one-character "formats". 325 */ 326 switch (*statfmt) { 327 case SIMPLE_NEWLINE: 328 addchar(stdout, '\n', &nl); 329 statfmt++; 330 continue; 331 case SIMPLE_TAB: 332 addchar(stdout, '\t', &nl); 333 statfmt++; 334 continue; 335 case SIMPLE_PERCENT: 336 addchar(stdout, '%', &nl); 337 statfmt++; 338 continue; 339 case SIMPLE_NUMBER: { 340 char num[12], *p; 341 342 snprintf(num, sizeof(num), "%d", fn); 343 for (p = &num[0]; *p; p++) 344 addchar(stdout, *p, &nl); 345 statfmt++; 346 continue; 347 } 348 } 349 350 /* 351 * This must be an actual format string. Format strings are 352 * similar to printf(3) formats up to a point, and are of 353 * the form: 354 * 355 * % required start of format 356 * [-# +0] opt. format characters 357 * size opt. field width 358 * . opt. decimal separator, followed by 359 * prec opt. precision 360 * fmt opt. output specifier (string, numeric, etc.) 361 * sub opt. sub field specifier (high, middle, low) 362 * datum required field specifier (size, mode, etc) 363 * 364 * Only the % and the datum selector are required. All data 365 * have reasonable default output forms. The "sub" specifier 366 * only applies to certain data (mode, dev, rdev, filetype). 367 * The symlink output defaults to STRING, yet will only emit 368 * the leading " -> " if STRING is explicitly specified. The 369 * sizerdev datum will generate rdev output for character or 370 * block devices, and size output for all others. 371 */ 372 flags = 0; 373 do { 374 if (*statfmt == FMT_POUND) 375 flags |= FLAG_POUND; 376 else if (*statfmt == FMT_SPACE) 377 flags |= FLAG_SPACE; 378 else if (*statfmt == FMT_PLUS) 379 flags |= FLAG_PLUS; 380 else if (*statfmt == FMT_ZERO) 381 flags |= FLAG_ZERO; 382 else if (*statfmt == FMT_MINUS) 383 flags |= FLAG_MINUS; 384 else 385 break; 386 statfmt++; 387 } while (1/*CONSTCOND*/); 388 389 size = -1; 390 if (isdigit((unsigned)*statfmt)) { 391 size = 0; 392 while (isdigit((unsigned)*statfmt)) { 393 size = (size * 10) + (*statfmt - '0'); 394 statfmt++; 395 if (size < 0) 396 goto badfmt; 397 } 398 } 399 400 prec = -1; 401 if (*statfmt == FMT_DOT) { 402 statfmt++; 403 404 prec = 0; 405 while (isdigit((unsigned)*statfmt)) { 406 prec = (prec * 10) + (*statfmt - '0'); 407 statfmt++; 408 if (prec < 0) 409 goto badfmt; 410 } 411 } 412 413 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 414 switch (*statfmt) { 415 fmtcase(ofmt, FMT_DECIMAL); 416 fmtcase(ofmt, FMT_OCTAL); 417 fmtcase(ofmt, FMT_UNSIGNED); 418 fmtcase(ofmt, FMT_HEX); 419 fmtcase(ofmt, FMT_FLOAT); 420 fmtcase(ofmt, FMT_STRING); 421 default: 422 ofmt = 0; 423 break; 424 } 425 426 switch (*statfmt) { 427 fmtcase(hilo, HIGH_PIECE); 428 fmtcase(hilo, MIDDLE_PIECE); 429 fmtcase(hilo, LOW_PIECE); 430 default: 431 hilo = 0; 432 break; 433 } 434 435 switch (*statfmt) { 436 fmtcase(what, SHOW_st_dev); 437 fmtcase(what, SHOW_st_ino); 438 fmtcase(what, SHOW_st_mode); 439 fmtcase(what, SHOW_st_nlink); 440 fmtcase(what, SHOW_st_uid); 441 fmtcase(what, SHOW_st_gid); 442 fmtcase(what, SHOW_st_rdev); 443 fmtcase(what, SHOW_st_atime); 444 fmtcase(what, SHOW_st_mtime); 445 fmtcase(what, SHOW_st_ctime); 446 fmtcase(what, SHOW_st_size); 447 fmtcase(what, SHOW_st_blocks); 448 fmtcase(what, SHOW_st_blksize); 449 fmtcase(what, SHOW_st_flags); 450 fmtcase(what, SHOW_st_gen); 451 fmtcase(what, SHOW_symlink); 452 fmtcase(what, SHOW_filetype); 453 fmtcase(what, SHOW_filename); 454 fmtcase(what, SHOW_sizerdev); 455 default: 456 goto badfmt; 457 } 458 #undef fmtcase 459 460 t = format1(st, 461 file, 462 subfmt, statfmt - subfmt, 463 buf, sizeof(buf), 464 flags, size, prec, ofmt, hilo, what); 465 466 for (i = 0; i < t && i < sizeof(buf); i++) 467 addchar(stdout, buf[i], &nl); 468 469 continue; 470 471 badfmt: 472 errx(1, "%.*s: bad format", 473 (int)(statfmt - subfmt + 1), subfmt); 474 } 475 476 if (!nl && !nonl) 477 (void)fputc('\n', stdout); 478 (void)fflush(stdout); 479 } 480 481 /* 482 * Arranges output according to a single parsed format substring. 483 */ 484 int 485 format1(const struct stat *st, 486 const char *file, 487 const char *fmt, int flen, 488 char *buf, size_t blen, 489 int flags, int size, int prec, int ofmt, 490 int hilo, int what) 491 { 492 u_int64_t data; 493 char *sdata, lfmt[24], tmp[20]; 494 char smode[12], sid[12], path[MAXPATHLEN + 4]; 495 struct passwd *pw; 496 struct group *gr; 497 const struct timespec *tsp; 498 struct timespec ts; 499 struct tm *tm; 500 int l, small, formats; 501 502 tsp = NULL; 503 formats = 0; 504 small = 0; 505 506 /* 507 * First, pick out the data and tweak it based on hilo or 508 * specified output format (symlink output only). 509 */ 510 switch (what) { 511 case SHOW_st_dev: 512 case SHOW_st_rdev: 513 small = (sizeof(st->st_dev) == 4); 514 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 515 sdata = (what == SHOW_st_dev) ? 516 devname(st->st_dev, S_IFBLK) : 517 devname(st->st_rdev, 518 S_ISCHR(st->st_mode) ? S_IFCHR : 519 S_ISBLK(st->st_mode) ? S_IFBLK : 520 0U); 521 if (sdata == NULL) 522 sdata = "???"; 523 if (hilo == HIGH_PIECE) { 524 data = major(data); 525 hilo = 0; 526 } 527 else if (hilo == LOW_PIECE) { 528 data = minor((unsigned)data); 529 hilo = 0; 530 } 531 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 532 FMT_STRING; 533 if (ofmt == 0) 534 ofmt = FMT_UNSIGNED; 535 break; 536 case SHOW_st_ino: 537 small = (sizeof(st->st_ino) == 4); 538 data = st->st_ino; 539 sdata = NULL; 540 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 541 if (ofmt == 0) 542 ofmt = FMT_UNSIGNED; 543 break; 544 case SHOW_st_mode: 545 small = (sizeof(st->st_mode) == 4); 546 data = st->st_mode; 547 strmode(st->st_mode, smode); 548 sdata = smode; 549 l = strlen(sdata); 550 if (sdata[l - 1] == ' ') 551 sdata[--l] = '\0'; 552 if (hilo == HIGH_PIECE) { 553 data >>= 12; 554 sdata += 1; 555 sdata[3] = '\0'; 556 hilo = 0; 557 } 558 else if (hilo == MIDDLE_PIECE) { 559 data = (data >> 9) & 07; 560 sdata += 4; 561 sdata[3] = '\0'; 562 hilo = 0; 563 } 564 else if (hilo == LOW_PIECE) { 565 data &= 0777; 566 sdata += 7; 567 sdata[3] = '\0'; 568 hilo = 0; 569 } 570 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 571 FMT_STRING; 572 if (ofmt == 0) 573 ofmt = FMT_OCTAL; 574 break; 575 case SHOW_st_nlink: 576 small = (sizeof(st->st_dev) == 4); 577 data = st->st_nlink; 578 sdata = NULL; 579 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 580 if (ofmt == 0) 581 ofmt = FMT_UNSIGNED; 582 break; 583 case SHOW_st_uid: 584 small = (sizeof(st->st_uid) == 4); 585 data = st->st_uid; 586 if ((pw = getpwuid(st->st_uid)) != NULL) 587 sdata = pw->pw_name; 588 else { 589 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 590 sdata = sid; 591 } 592 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 593 FMT_STRING; 594 if (ofmt == 0) 595 ofmt = FMT_UNSIGNED; 596 break; 597 case SHOW_st_gid: 598 small = (sizeof(st->st_gid) == 4); 599 data = st->st_gid; 600 if ((gr = getgrgid(st->st_gid)) != NULL) 601 sdata = gr->gr_name; 602 else { 603 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 604 sdata = sid; 605 } 606 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 607 FMT_STRING; 608 if (ofmt == 0) 609 ofmt = FMT_UNSIGNED; 610 break; 611 case SHOW_st_atime: 612 tsp = &st->st_atimespec; 613 /* FALLTHROUGH */ 614 case SHOW_st_mtime: 615 if (tsp == NULL) 616 tsp = &st->st_mtimespec; 617 /* FALLTHROUGH */ 618 case SHOW_st_ctime: 619 if (tsp == NULL) 620 tsp = &st->st_ctimespec; 621 ts = *tsp; /* copy so we can muck with it */ 622 small = (sizeof(ts.tv_sec) == 4); 623 data = ts.tv_sec; 624 small = 1; 625 tm = localtime(&ts.tv_sec); 626 (void)strftime(path, sizeof(path), timefmt, tm); 627 sdata = path; 628 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 629 FMT_FLOAT | FMT_STRING; 630 if (ofmt == 0) 631 ofmt = FMT_DECIMAL; 632 break; 633 case SHOW_st_size: 634 small = (sizeof(st->st_size) == 4); 635 data = st->st_size; 636 sdata = NULL; 637 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 638 if (ofmt == 0) 639 ofmt = FMT_UNSIGNED; 640 break; 641 case SHOW_st_blocks: 642 small = (sizeof(st->st_blocks) == 4); 643 data = st->st_blocks; 644 sdata = NULL; 645 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 646 if (ofmt == 0) 647 ofmt = FMT_UNSIGNED; 648 break; 649 case SHOW_st_blksize: 650 small = (sizeof(st->st_blksize) == 4); 651 data = st->st_blksize; 652 sdata = NULL; 653 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 654 if (ofmt == 0) 655 ofmt = FMT_UNSIGNED; 656 break; 657 case SHOW_st_flags: 658 small = (sizeof(st->st_flags) == 4); 659 data = st->st_flags; 660 sdata = NULL; 661 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 662 if (ofmt == 0) 663 ofmt = FMT_UNSIGNED; 664 break; 665 case SHOW_st_gen: 666 small = (sizeof(st->st_gen) == 4); 667 data = st->st_gen; 668 sdata = NULL; 669 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 670 if (ofmt == 0) 671 ofmt = FMT_UNSIGNED; 672 break; 673 case SHOW_symlink: 674 small = 0; 675 data = 0; 676 if (S_ISLNK(st->st_mode)) { 677 snprintf(path, sizeof(path), " -> "); 678 l = readlink(file, path + 4, sizeof(path) - 4); 679 if (l == -1) { 680 linkfail = 1; 681 l = 0; 682 path[0] = '\0'; 683 } 684 path[l + 4] = '\0'; 685 sdata = path + (ofmt == FMT_STRING ? 0 : 4); 686 } 687 else { 688 linkfail = 1; 689 sdata = ""; 690 } 691 formats = FMT_STRING; 692 if (ofmt == 0) 693 ofmt = FMT_STRING; 694 break; 695 case SHOW_filetype: 696 small = 0; 697 data = 0; 698 sdata = smode; 699 sdata[0] = '\0'; 700 if (hilo == 0 || hilo == LOW_PIECE) { 701 switch (st->st_mode & S_IFMT) { 702 case S_IFIFO: (void)strcat(sdata, "|"); break; 703 case S_IFDIR: (void)strcat(sdata, "/"); break; 704 case S_IFREG: 705 if (st->st_mode & 706 (S_IXUSR | S_IXGRP | S_IXOTH)) 707 (void)strcat(sdata, "*"); 708 break; 709 case S_IFLNK: (void)strcat(sdata, "@"); break; 710 case S_IFSOCK: (void)strcat(sdata, "="); break; 711 case S_IFWHT: (void)strcat(sdata, "%"); break; 712 } 713 hilo = 0; 714 } 715 else if (hilo == HIGH_PIECE) { 716 switch (st->st_mode & S_IFMT) { 717 case S_IFIFO: sdata = "Fifo File"; break; 718 case S_IFCHR: sdata = "Character Device"; break; 719 case S_IFDIR: sdata = "Directory"; break; 720 case S_IFBLK: sdata = "Block Device"; break; 721 case S_IFREG: sdata = "Regular File"; break; 722 case S_IFLNK: sdata = "Symbolic Link"; break; 723 case S_IFSOCK: sdata = "Socket"; break; 724 case S_IFWHT: sdata = "Whiteout File"; break; 725 default: sdata = "???"; break; 726 } 727 hilo = 0; 728 } 729 formats = FMT_STRING; 730 if (ofmt == 0) 731 ofmt = FMT_STRING; 732 break; 733 case SHOW_filename: 734 small = 0; 735 data = 0; 736 if (file == NULL) 737 (void)strncpy(path, "(stdin)", sizeof(path)); 738 else 739 (void)strncpy(path, file, sizeof(path)); 740 sdata = path; 741 formats = FMT_STRING; 742 if (ofmt == 0) 743 ofmt = FMT_STRING; 744 break; 745 case SHOW_sizerdev: 746 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 747 char majdev[20], mindev[20]; 748 int l1, l2; 749 750 l1 = format1(st, 751 file, 752 fmt, flen, 753 majdev, sizeof(majdev), 754 flags, size, prec, 755 ofmt, HIGH_PIECE, SHOW_st_rdev); 756 l2 = format1(st, 757 file, 758 fmt, flen, 759 mindev, sizeof(mindev), 760 flags, size, prec, 761 ofmt, LOW_PIECE, SHOW_st_rdev); 762 return (snprintf(buf, blen, "%.*s,%.*s", 763 l1, majdev, l2, mindev)); 764 } 765 else { 766 return (format1(st, 767 file, 768 fmt, flen, 769 buf, blen, 770 flags, size, prec, 771 ofmt, 0, SHOW_st_size)); 772 } 773 /*NOTREACHED*/ 774 default: 775 errx(1, "%.*s: bad format", (int)flen, fmt); 776 } 777 778 /* 779 * If a subdatum was specified but not supported, or an output 780 * format was selected that is not supported, that's an error. 781 */ 782 if (hilo != 0 || (ofmt & formats) == 0) 783 errx(1, "%.*s: bad format", (int)flen, fmt); 784 785 /* 786 * Assemble the format string for passing to printf(3). 787 */ 788 lfmt[0] = '\0'; 789 (void)strcat(lfmt, "%"); 790 if (flags & FLAG_POUND) 791 (void)strcat(lfmt, "#"); 792 if (flags & FLAG_SPACE) 793 (void)strcat(lfmt, " "); 794 if (flags & FLAG_PLUS) 795 (void)strcat(lfmt, "+"); 796 if (flags & FLAG_MINUS) 797 (void)strcat(lfmt, "-"); 798 if (flags & FLAG_ZERO) 799 (void)strcat(lfmt, "0"); 800 801 /* 802 * Only the timespecs support the FLOAT output format, and that 803 * requires work that differs from the other formats. 804 */ 805 if (ofmt == FMT_FLOAT) { 806 /* 807 * Nothing after the decimal point, so just print seconds. 808 */ 809 if (prec == 0) { 810 if (size != -1) { 811 (void)snprintf(tmp, sizeof(tmp), "%d", size); 812 (void)strcat(lfmt, tmp); 813 } 814 (void)strcat(lfmt, "d"); 815 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 816 } 817 818 /* 819 * Unspecified precision gets all the precision we have: 820 * 9 digits. 821 */ 822 if (prec == -1) 823 prec = 9; 824 825 /* 826 * Adjust the size for the decimal point and the digits 827 * that will follow. 828 */ 829 size -= prec + 1; 830 831 /* 832 * Any leftover size that's legitimate will be used. 833 */ 834 if (size > 0) { 835 (void)snprintf(tmp, sizeof(tmp), "%d", size); 836 (void)strcat(lfmt, tmp); 837 } 838 (void)strcat(lfmt, "d"); 839 840 /* 841 * The stuff after the decimal point always needs zero 842 * filling. 843 */ 844 (void)strcat(lfmt, ".%0"); 845 846 /* 847 * We can "print" at most nine digits of precision. The 848 * rest we will pad on at the end. 849 */ 850 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 851 (void)strcat(lfmt, tmp); 852 853 /* 854 * For precision of less that nine digits, trim off the 855 * less significant figures. 856 */ 857 for (; prec < 9; prec++) 858 ts.tv_nsec /= 10; 859 860 /* 861 * Use the format, and then tack on any zeroes that 862 * might be required to make up the requested precision. 863 */ 864 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 865 for (; prec > 9 && l < blen; prec--, l++) 866 (void)strcat(buf, "0"); 867 return (l); 868 } 869 870 /* 871 * Add on size and precision, if specified, to the format. 872 */ 873 if (size != -1) { 874 (void)snprintf(tmp, sizeof(tmp), "%d", size); 875 (void)strcat(lfmt, tmp); 876 } 877 if (prec != -1) { 878 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 879 (void)strcat(lfmt, tmp); 880 } 881 882 /* 883 * String output uses the temporary sdata. 884 */ 885 if (ofmt == FMT_STRING) { 886 if (sdata == NULL) 887 errx(1, "%.*s: bad format", (int)flen, fmt); 888 (void)strcat(lfmt, "s"); 889 return (snprintf(buf, blen, lfmt, sdata)); 890 } 891 892 /* 893 * Ensure that sign extension does not cause bad looking output 894 * for some forms. 895 */ 896 if (small && ofmt != FMT_DECIMAL) 897 data = (u_int32_t)data; 898 899 /* 900 * The four "numeric" output forms. 901 */ 902 (void)strcat(lfmt, "ll"); 903 switch (ofmt) { 904 case FMT_DECIMAL: (void)strcat(lfmt, "d"); break; 905 case FMT_OCTAL: (void)strcat(lfmt, "o"); break; 906 case FMT_UNSIGNED: (void)strcat(lfmt, "u"); break; 907 case FMT_HEX: (void)strcat(lfmt, "x"); break; 908 } 909 910 return (snprintf(buf, blen, lfmt, data)); 911 } 912
Indexes created Wed Sep 24 15:09:51 GMT 2025