stat.c revision 1.10
1 /* $NetBSD: stat.c,v 1.10 2003/05/08 13:05:38 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 1.10 2003/05/08 13:05:38 atatat Exp $"); 42 #endif 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <grp.h> 50 #include <limits.h> 51 #include <pwd.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <time.h> 56 #include <unistd.h> 57 58 #define DEF_FORMAT \ 59 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" \"%SB\" %k %b %N" 60 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c %B %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_atime=%a st_mtime=%m st_ctime=%c st_birthtime=%B " \ 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 FMTF_DECIMAL 0x01 110 #define FMTF_OCTAL 0x02 111 #define FMTF_UNSIGNED 0x04 112 #define FMTF_HEX 0x08 113 #define FMTF_FLOAT 0x10 114 #define FMTF_STRING 0x20 115 116 #define HIGH_PIECE 'H' 117 #define MIDDLE_PIECE 'M' 118 #define LOW_PIECE 'L' 119 120 #define SHOW_st_dev 'd' 121 #define SHOW_st_ino 'i' 122 #define SHOW_st_mode 'p' 123 #define SHOW_st_nlink 'l' 124 #define SHOW_st_uid 'u' 125 #define SHOW_st_gid 'g' 126 #define SHOW_st_rdev 'r' 127 #define SHOW_st_atime 'a' 128 #define SHOW_st_mtime 'm' 129 #define SHOW_st_ctime 'c' 130 #define SHOW_st_btime 'B' 131 #define SHOW_st_size 'z' 132 #define SHOW_st_blocks 'b' 133 #define SHOW_st_blksize 'k' 134 #define SHOW_st_flags 'f' 135 #define SHOW_st_gen 'v' 136 #define SHOW_symlink 'Y' 137 #define SHOW_filetype 'T' 138 #define SHOW_filename 'N' 139 #define SHOW_sizerdev 'Z' 140 141 void usage(const char *); 142 void output(const struct stat *, const char *, 143 const char *, int, int, int); 144 int format1(const struct stat *, /* stat info */ 145 const char *, /* the file name */ 146 const char *, int, /* the format string itself */ 147 char *, size_t, /* a place to put the output */ 148 int, int, int, int, /* the parsed format */ 149 int, int); 150 151 char *timefmt; 152 int linkfail; 153 154 #define addchar(s, c, nl) \ 155 do { \ 156 (void)fputc((c), (s)); \ 157 (*nl) = ((c) == '\n'); \ 158 } while (0/*CONSTCOND*/) 159 160 int 161 main(int argc, char *argv[]) 162 { 163 struct stat st; 164 int ch, rc, errs, am_readlink; 165 int lsF, fmtchar, usestat, fn, nonl, quiet; 166 char *statfmt, *options, *synopsis; 167 168 am_readlink = 0; 169 lsF = 0; 170 fmtchar = '\0'; 171 usestat = 0; 172 nonl = 0; 173 quiet = 0; 174 linkfail = 0; 175 statfmt = NULL; 176 timefmt = NULL; 177 178 if (strcmp(getprogname(), "readlink") == 0) { 179 am_readlink = 1; 180 options = "n"; 181 synopsis = "[-n] [file ...]"; 182 statfmt = "%Y"; 183 fmtchar = 'f'; 184 quiet = 1; 185 } else { 186 options = "f:FlLnqrst:x"; 187 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 188 } 189 190 while ((ch = getopt(argc, argv, options)) != -1) 191 switch (ch) { 192 case 'F': 193 lsF = 1; 194 break; 195 case 'L': 196 usestat = 1; 197 break; 198 case 'n': 199 nonl = 1; 200 break; 201 case 'q': 202 quiet = 1; 203 break; 204 case 'f': 205 statfmt = optarg; 206 /* FALLTHROUGH */ 207 case 'l': 208 case 'r': 209 case 's': 210 case 'x': 211 if (fmtchar != 0) 212 errx(1, "can't use format '%c' with '%c'", 213 fmtchar, ch); 214 fmtchar = ch; 215 break; 216 case 't': 217 timefmt = optarg; 218 break; 219 default: 220 usage(synopsis); 221 } 222 223 argc -= optind; 224 argv += optind; 225 fn = 1; 226 227 if (fmtchar == '\0') { 228 if (lsF) 229 fmtchar = 'l'; 230 else { 231 fmtchar = 'f'; 232 statfmt = DEF_FORMAT; 233 } 234 } 235 236 if (lsF && fmtchar != 'l') 237 errx(1, "can't use format '%c' with -F", fmtchar); 238 239 switch (fmtchar) { 240 case 'f': 241 /* statfmt already set */ 242 break; 243 case 'l': 244 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 245 break; 246 case 'r': 247 statfmt = RAW_FORMAT; 248 break; 249 case 's': 250 statfmt = SHELL_FORMAT; 251 break; 252 case 'x': 253 statfmt = LINUX_FORMAT; 254 if (timefmt == NULL) 255 timefmt = "%c"; 256 break; 257 default: 258 usage(synopsis); 259 /*NOTREACHED*/ 260 } 261 262 if (timefmt == NULL) 263 timefmt = TIME_FORMAT; 264 265 errs = 0; 266 do { 267 if (argc == 0) 268 rc = fstat(STDIN_FILENO, &st); 269 else if (usestat) 270 rc = stat(argv[0], &st); 271 else 272 rc = lstat(argv[0], &st); 273 274 if (rc == -1) { 275 errs = 1; 276 linkfail = 1; 277 if (!quiet) 278 warn("%s: stat", 279 argc == 0 ? "(stdin)" : argv[0]); 280 } 281 else 282 output(&st, argv[0], statfmt, fn, nonl, quiet); 283 284 argv++; 285 argc--; 286 fn++; 287 } while (argc > 0); 288 289 return (am_readlink ? linkfail : errs); 290 } 291 292 void 293 usage(const char *synopsis) 294 { 295 296 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 297 exit(1); 298 } 299 300 /* 301 * Parses a format string. 302 */ 303 void 304 output(const struct stat *st, const char *file, 305 const char *statfmt, int fn, int nonl, int quiet) 306 { 307 int flags, size, prec, ofmt, hilo, what; 308 char buf[PATH_MAX]; 309 const char *subfmt; 310 int nl, t, i; 311 312 nl = 1; 313 while (*statfmt != '\0') { 314 315 /* 316 * Non-format characters go straight out. 317 */ 318 if (*statfmt != FMT_MAGIC) { 319 addchar(stdout, *statfmt, &nl); 320 statfmt++; 321 continue; 322 } 323 324 /* 325 * The current format "substring" starts here, 326 * and then we skip the magic. 327 */ 328 subfmt = statfmt; 329 statfmt++; 330 331 /* 332 * Some simple one-character "formats". 333 */ 334 switch (*statfmt) { 335 case SIMPLE_NEWLINE: 336 addchar(stdout, '\n', &nl); 337 statfmt++; 338 continue; 339 case SIMPLE_TAB: 340 addchar(stdout, '\t', &nl); 341 statfmt++; 342 continue; 343 case SIMPLE_PERCENT: 344 addchar(stdout, '%', &nl); 345 statfmt++; 346 continue; 347 case SIMPLE_NUMBER: { 348 char num[12], *p; 349 350 snprintf(num, sizeof(num), "%d", fn); 351 for (p = &num[0]; *p; p++) 352 addchar(stdout, *p, &nl); 353 statfmt++; 354 continue; 355 } 356 } 357 358 /* 359 * This must be an actual format string. Format strings are 360 * similar to printf(3) formats up to a point, and are of 361 * the form: 362 * 363 * % required start of format 364 * [-# +0] opt. format characters 365 * size opt. field width 366 * . opt. decimal separator, followed by 367 * prec opt. precision 368 * fmt opt. output specifier (string, numeric, etc.) 369 * sub opt. sub field specifier (high, middle, low) 370 * datum required field specifier (size, mode, etc) 371 * 372 * Only the % and the datum selector are required. All data 373 * have reasonable default output forms. The "sub" specifier 374 * only applies to certain data (mode, dev, rdev, filetype). 375 * The symlink output defaults to STRING, yet will only emit 376 * the leading " -> " if STRING is explicitly specified. The 377 * sizerdev datum will generate rdev output for character or 378 * block devices, and size output for all others. 379 */ 380 flags = 0; 381 do { 382 if (*statfmt == FMT_POUND) 383 flags |= FLAG_POUND; 384 else if (*statfmt == FMT_SPACE) 385 flags |= FLAG_SPACE; 386 else if (*statfmt == FMT_PLUS) 387 flags |= FLAG_PLUS; 388 else if (*statfmt == FMT_ZERO) 389 flags |= FLAG_ZERO; 390 else if (*statfmt == FMT_MINUS) 391 flags |= FLAG_MINUS; 392 else 393 break; 394 statfmt++; 395 } while (1/*CONSTCOND*/); 396 397 size = -1; 398 if (isdigit((unsigned)*statfmt)) { 399 size = 0; 400 while (isdigit((unsigned)*statfmt)) { 401 size = (size * 10) + (*statfmt - '0'); 402 statfmt++; 403 if (size < 0) 404 goto badfmt; 405 } 406 } 407 408 prec = -1; 409 if (*statfmt == FMT_DOT) { 410 statfmt++; 411 412 prec = 0; 413 while (isdigit((unsigned)*statfmt)) { 414 prec = (prec * 10) + (*statfmt - '0'); 415 statfmt++; 416 if (prec < 0) 417 goto badfmt; 418 } 419 } 420 421 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 422 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 423 switch (*statfmt) { 424 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 425 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 426 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 427 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 428 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 429 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 430 default: 431 ofmt = 0; 432 break; 433 } 434 435 switch (*statfmt) { 436 fmtcase(hilo, HIGH_PIECE); 437 fmtcase(hilo, MIDDLE_PIECE); 438 fmtcase(hilo, LOW_PIECE); 439 default: 440 hilo = 0; 441 break; 442 } 443 444 switch (*statfmt) { 445 fmtcase(what, SHOW_st_dev); 446 fmtcase(what, SHOW_st_ino); 447 fmtcase(what, SHOW_st_mode); 448 fmtcase(what, SHOW_st_nlink); 449 fmtcase(what, SHOW_st_uid); 450 fmtcase(what, SHOW_st_gid); 451 fmtcase(what, SHOW_st_rdev); 452 fmtcase(what, SHOW_st_atime); 453 fmtcase(what, SHOW_st_mtime); 454 fmtcase(what, SHOW_st_ctime); 455 fmtcase(what, SHOW_st_btime); 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 /* FALLTHROUGH */ 633 case SHOW_st_btime: 634 if (tsp == NULL) 635 tsp = &st->st_birthtimespec; 636 ts = *tsp; /* copy so we can muck with it */ 637 small = (sizeof(ts.tv_sec) == 4); 638 data = ts.tv_sec; 639 small = 1; 640 tm = localtime(&ts.tv_sec); 641 (void)strftime(path, sizeof(path), timefmt, tm); 642 sdata = path; 643 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 644 FMTF_FLOAT | FMTF_STRING; 645 if (ofmt == 0) 646 ofmt = FMTF_DECIMAL; 647 break; 648 case SHOW_st_size: 649 small = (sizeof(st->st_size) == 4); 650 data = st->st_size; 651 sdata = NULL; 652 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 653 if (ofmt == 0) 654 ofmt = FMTF_UNSIGNED; 655 break; 656 case SHOW_st_blocks: 657 small = (sizeof(st->st_blocks) == 4); 658 data = st->st_blocks; 659 sdata = NULL; 660 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 661 if (ofmt == 0) 662 ofmt = FMTF_UNSIGNED; 663 break; 664 case SHOW_st_blksize: 665 small = (sizeof(st->st_blksize) == 4); 666 data = st->st_blksize; 667 sdata = NULL; 668 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 669 if (ofmt == 0) 670 ofmt = FMTF_UNSIGNED; 671 break; 672 case SHOW_st_flags: 673 small = (sizeof(st->st_flags) == 4); 674 data = st->st_flags; 675 sdata = NULL; 676 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 677 if (ofmt == 0) 678 ofmt = FMTF_UNSIGNED; 679 break; 680 case SHOW_st_gen: 681 small = (sizeof(st->st_gen) == 4); 682 data = st->st_gen; 683 sdata = NULL; 684 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 685 if (ofmt == 0) 686 ofmt = FMTF_UNSIGNED; 687 break; 688 case SHOW_symlink: 689 small = 0; 690 data = 0; 691 if (S_ISLNK(st->st_mode)) { 692 snprintf(path, sizeof(path), " -> "); 693 l = readlink(file, path + 4, sizeof(path) - 4 - 1); 694 if (l == -1) { 695 linkfail = 1; 696 l = 0; 697 path[0] = '\0'; 698 } 699 path[l + 4] = '\0'; 700 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 701 } 702 else { 703 linkfail = 1; 704 sdata = ""; 705 } 706 formats = FMTF_STRING; 707 if (ofmt == 0) 708 ofmt = FMTF_STRING; 709 break; 710 case SHOW_filetype: 711 small = 0; 712 data = 0; 713 sdata = smode; 714 sdata[0] = '\0'; 715 if (hilo == 0 || hilo == LOW_PIECE) { 716 switch (st->st_mode & S_IFMT) { 717 case S_IFIFO: (void)strcat(sdata, "|"); break; 718 case S_IFDIR: (void)strcat(sdata, "/"); break; 719 case S_IFREG: 720 if (st->st_mode & 721 (S_IXUSR | S_IXGRP | S_IXOTH)) 722 (void)strcat(sdata, "*"); 723 break; 724 case S_IFLNK: (void)strcat(sdata, "@"); break; 725 case S_IFSOCK: (void)strcat(sdata, "="); break; 726 case S_IFWHT: (void)strcat(sdata, "%"); break; 727 } 728 hilo = 0; 729 } 730 else if (hilo == HIGH_PIECE) { 731 switch (st->st_mode & S_IFMT) { 732 case S_IFIFO: sdata = "Fifo File"; break; 733 case S_IFCHR: sdata = "Character Device"; break; 734 case S_IFDIR: sdata = "Directory"; break; 735 case S_IFBLK: sdata = "Block Device"; break; 736 case S_IFREG: sdata = "Regular File"; break; 737 case S_IFLNK: sdata = "Symbolic Link"; break; 738 case S_IFSOCK: sdata = "Socket"; break; 739 case S_IFWHT: sdata = "Whiteout File"; break; 740 default: sdata = "???"; break; 741 } 742 hilo = 0; 743 } 744 formats = FMTF_STRING; 745 if (ofmt == 0) 746 ofmt = FMTF_STRING; 747 break; 748 case SHOW_filename: 749 small = 0; 750 data = 0; 751 if (file == NULL) 752 (void)strncpy(path, "(stdin)", sizeof(path)); 753 else 754 (void)strncpy(path, file, sizeof(path)); 755 sdata = path; 756 formats = FMTF_STRING; 757 if (ofmt == 0) 758 ofmt = FMTF_STRING; 759 break; 760 case SHOW_sizerdev: 761 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 762 char majdev[20], mindev[20]; 763 int l1, l2; 764 765 l1 = format1(st, 766 file, 767 fmt, flen, 768 majdev, sizeof(majdev), 769 flags, size, prec, 770 ofmt, HIGH_PIECE, SHOW_st_rdev); 771 l2 = format1(st, 772 file, 773 fmt, flen, 774 mindev, sizeof(mindev), 775 flags, size, prec, 776 ofmt, LOW_PIECE, SHOW_st_rdev); 777 return (snprintf(buf, blen, "%.*s,%.*s", 778 l1, majdev, l2, mindev)); 779 } 780 else { 781 return (format1(st, 782 file, 783 fmt, flen, 784 buf, blen, 785 flags, size, prec, 786 ofmt, 0, SHOW_st_size)); 787 } 788 /*NOTREACHED*/ 789 default: 790 errx(1, "%.*s: bad format", (int)flen, fmt); 791 } 792 793 /* 794 * If a subdatum was specified but not supported, or an output 795 * format was selected that is not supported, that's an error. 796 */ 797 if (hilo != 0 || (ofmt & formats) == 0) 798 errx(1, "%.*s: bad format", (int)flen, fmt); 799 800 /* 801 * Assemble the format string for passing to printf(3). 802 */ 803 lfmt[0] = '\0'; 804 (void)strcat(lfmt, "%"); 805 if (flags & FLAG_POUND) 806 (void)strcat(lfmt, "#"); 807 if (flags & FLAG_SPACE) 808 (void)strcat(lfmt, " "); 809 if (flags & FLAG_PLUS) 810 (void)strcat(lfmt, "+"); 811 if (flags & FLAG_MINUS) 812 (void)strcat(lfmt, "-"); 813 if (flags & FLAG_ZERO) 814 (void)strcat(lfmt, "0"); 815 816 /* 817 * Only the timespecs support the FLOAT output format, and that 818 * requires work that differs from the other formats. 819 */ 820 if (ofmt == FMTF_FLOAT) { 821 /* 822 * Nothing after the decimal point, so just print seconds. 823 */ 824 if (prec == 0) { 825 if (size != -1) { 826 (void)snprintf(tmp, sizeof(tmp), "%d", size); 827 (void)strcat(lfmt, tmp); 828 } 829 (void)strcat(lfmt, "d"); 830 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 831 } 832 833 /* 834 * Unspecified precision gets all the precision we have: 835 * 9 digits. 836 */ 837 if (prec == -1) 838 prec = 9; 839 840 /* 841 * Adjust the size for the decimal point and the digits 842 * that will follow. 843 */ 844 size -= prec + 1; 845 846 /* 847 * Any leftover size that's legitimate will be used. 848 */ 849 if (size > 0) { 850 (void)snprintf(tmp, sizeof(tmp), "%d", size); 851 (void)strcat(lfmt, tmp); 852 } 853 (void)strcat(lfmt, "d"); 854 855 /* 856 * The stuff after the decimal point always needs zero 857 * filling. 858 */ 859 (void)strcat(lfmt, ".%0"); 860 861 /* 862 * We can "print" at most nine digits of precision. The 863 * rest we will pad on at the end. 864 */ 865 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 866 (void)strcat(lfmt, tmp); 867 868 /* 869 * For precision of less that nine digits, trim off the 870 * less significant figures. 871 */ 872 for (; prec < 9; prec++) 873 ts.tv_nsec /= 10; 874 875 /* 876 * Use the format, and then tack on any zeroes that 877 * might be required to make up the requested precision. 878 */ 879 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 880 for (; prec > 9 && l < blen; prec--, l++) 881 (void)strcat(buf, "0"); 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)strcat(lfmt, tmp); 891 } 892 if (prec != -1) { 893 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 894 (void)strcat(lfmt, tmp); 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)strcat(lfmt, "s"); 904 return (snprintf(buf, blen, lfmt, sdata)); 905 } 906 907 /* 908 * Ensure that sign extension does not cause bad looking output 909 * for some forms. 910 */ 911 if (small && ofmt != FMTF_DECIMAL) 912 data = (u_int32_t)data; 913 914 /* 915 * The four "numeric" output forms. 916 */ 917 (void)strcat(lfmt, "ll"); 918 switch (ofmt) { 919 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 920 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 921 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 922 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 923 } 924 925 return (snprintf(buf, blen, lfmt, data)); 926 } 927
Indexes created Mon Sep 22 13:09:51 GMT 2025