stat.c revision 1.6
1 /* $NetBSD: stat.c,v 1.6 2002/07/09 21:25:00 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 1.6 2002/07/09 21:25:00 atatat Exp $"); 42 #endif 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 47 #include <ctype.h> 48 #include <grp.h> 49 #include <pwd.h> 50 #include <stdio.h> 51 #include <fcntl.h> 52 #include <err.h> 53 #include <string.h> 54 #include <stdlib.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\" %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 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_size 'z' 131 #define SHOW_st_blocks 'b' 132 #define SHOW_st_blksize 'k' 133 #define SHOW_st_flags 'f' 134 #define SHOW_st_gen 'v' 135 #define SHOW_symlink 'Y' 136 #define SHOW_filetype 'T' 137 #define SHOW_filename 'N' 138 #define SHOW_sizerdev 'Z' 139 140 void usage(const char *); 141 void output(const struct stat *, const char *, 142 const char *, int, int, int); 143 int format1(const struct stat *, /* stat info */ 144 const char *, /* the file name */ 145 const char *, int, /* the format string itself */ 146 char *, size_t, /* a place to put the output */ 147 int, int, int, int, /* the parsed format */ 148 int, int); 149 150 char *timefmt; 151 int linkfail; 152 153 #define addchar(s, c, nl) \ 154 do { \ 155 (void)fputc((c), (s)); \ 156 (*nl) = ((c) == '\n'); \ 157 } while (0/*CONSTCOND*/) 158 159 int 160 main(int argc, char *argv[]) 161 { 162 struct stat st; 163 int ch, rc, errs, am_readlink; 164 int lsF, fmtchar, usestat, fn, nonl, quiet; 165 char *statfmt, *options, *synopsis; 166 167 am_readlink = 0; 168 lsF = 0; 169 fmtchar = '\0'; 170 usestat = 0; 171 nonl = 0; 172 quiet = 0; 173 linkfail = 0; 174 statfmt = NULL; 175 timefmt = NULL; 176 177 if (strcmp(getprogname(), "readlink") == 0) { 178 am_readlink = 1; 179 options = "n"; 180 synopsis = "[-n] [file ...]"; 181 statfmt = "%Y"; 182 fmtchar = 'f'; 183 quiet = 1; 184 } else { 185 options = "f:FlLnqrst:x"; 186 synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]"; 187 } 188 189 while ((ch = getopt(argc, argv, options)) != -1) 190 switch (ch) { 191 case 'F': 192 lsF = 1; 193 break; 194 case 'L': 195 usestat = 1; 196 break; 197 case 'n': 198 nonl = 1; 199 break; 200 case 'q': 201 quiet = 1; 202 break; 203 case 'f': 204 statfmt = optarg; 205 /* FALLTHROUGH */ 206 case 'l': 207 case 'r': 208 case 's': 209 case 'x': 210 if (fmtchar != 0) 211 errx(1, "can't use format '%c' with '%c'", 212 fmtchar, ch); 213 fmtchar = ch; 214 break; 215 case 't': 216 timefmt = optarg; 217 break; 218 default: 219 usage(synopsis); 220 } 221 222 argc -= optind; 223 argv += optind; 224 fn = 1; 225 226 if (fmtchar == '\0') { 227 if (lsF) 228 fmtchar = 'l'; 229 else { 230 fmtchar = 'f'; 231 statfmt = DEF_FORMAT; 232 } 233 } 234 235 if (lsF && fmtchar != 'l') 236 errx(1, "can't use format '%c' with -F", fmtchar); 237 238 switch (fmtchar) { 239 case 'f': 240 /* statfmt already set */ 241 break; 242 case 'l': 243 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 244 break; 245 case 'r': 246 statfmt = RAW_FORMAT; 247 break; 248 case 's': 249 statfmt = SHELL_FORMAT; 250 break; 251 case 'x': 252 statfmt = LINUX_FORMAT; 253 if (timefmt == NULL) 254 timefmt = "%c"; 255 break; 256 default: 257 usage(synopsis); 258 /*NOTREACHED*/ 259 } 260 261 if (timefmt == NULL) 262 timefmt = TIME_FORMAT; 263 264 errs = 0; 265 do { 266 if (argc == 0) 267 rc = fstat(STDIN_FILENO, &st); 268 else if (usestat) 269 rc = stat(argv[0], &st); 270 else 271 rc = lstat(argv[0], &st); 272 273 if (rc == -1) { 274 errs = 1; 275 linkfail = 1; 276 if (!quiet) 277 warn("%s: stat", 278 argc == 0 ? "(stdin)" : argv[0]); 279 } 280 else 281 output(&st, argv[0], statfmt, fn, nonl, quiet); 282 283 argv++; 284 argc--; 285 fn++; 286 } while (argc > 0); 287 288 return (am_readlink ? linkfail : errs); 289 } 290 291 void 292 usage(const char *synopsis) 293 { 294 295 (void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis); 296 exit(1); 297 } 298 299 /* 300 * Parses a format string. 301 */ 302 void 303 output(const struct stat *st, const char *file, 304 const char *statfmt, int fn, int nonl, int quiet) 305 { 306 int flags, size, prec, ofmt, hilo, what; 307 char buf[MAXPATHLEN]; 308 const char *subfmt; 309 int nl, t, i; 310 311 nl = 1; 312 while (*statfmt != '\0') { 313 314 /* 315 * Non-format characters go straight out. 316 */ 317 if (*statfmt != FMT_MAGIC) { 318 addchar(stdout, *statfmt, &nl); 319 statfmt++; 320 continue; 321 } 322 323 /* 324 * The current format "substring" starts here, 325 * and then we skip the magic. 326 */ 327 subfmt = statfmt; 328 statfmt++; 329 330 /* 331 * Some simple one-character "formats". 332 */ 333 switch (*statfmt) { 334 case SIMPLE_NEWLINE: 335 addchar(stdout, '\n', &nl); 336 statfmt++; 337 continue; 338 case SIMPLE_TAB: 339 addchar(stdout, '\t', &nl); 340 statfmt++; 341 continue; 342 case SIMPLE_PERCENT: 343 addchar(stdout, '%', &nl); 344 statfmt++; 345 continue; 346 case SIMPLE_NUMBER: { 347 char num[12], *p; 348 349 snprintf(num, sizeof(num), "%d", fn); 350 for (p = &num[0]; *p; p++) 351 addchar(stdout, *p, &nl); 352 statfmt++; 353 continue; 354 } 355 } 356 357 /* 358 * This must be an actual format string. Format strings are 359 * similar to printf(3) formats up to a point, and are of 360 * the form: 361 * 362 * % required start of format 363 * [-# +0] opt. format characters 364 * size opt. field width 365 * . opt. decimal separator, followed by 366 * prec opt. precision 367 * fmt opt. output specifier (string, numeric, etc.) 368 * sub opt. sub field specifier (high, middle, low) 369 * datum required field specifier (size, mode, etc) 370 * 371 * Only the % and the datum selector are required. All data 372 * have reasonable default output forms. The "sub" specifier 373 * only applies to certain data (mode, dev, rdev, filetype). 374 * The symlink output defaults to STRING, yet will only emit 375 * the leading " -> " if STRING is explicitly specified. The 376 * sizerdev datum will generate rdev output for character or 377 * block devices, and size output for all others. 378 */ 379 flags = 0; 380 do { 381 if (*statfmt == FMT_POUND) 382 flags |= FLAG_POUND; 383 else if (*statfmt == FMT_SPACE) 384 flags |= FLAG_SPACE; 385 else if (*statfmt == FMT_PLUS) 386 flags |= FLAG_PLUS; 387 else if (*statfmt == FMT_ZERO) 388 flags |= FLAG_ZERO; 389 else if (*statfmt == FMT_MINUS) 390 flags |= FLAG_MINUS; 391 else 392 break; 393 statfmt++; 394 } while (1/*CONSTCOND*/); 395 396 size = -1; 397 if (isdigit((unsigned)*statfmt)) { 398 size = 0; 399 while (isdigit((unsigned)*statfmt)) { 400 size = (size * 10) + (*statfmt - '0'); 401 statfmt++; 402 if (size < 0) 403 goto badfmt; 404 } 405 } 406 407 prec = -1; 408 if (*statfmt == FMT_DOT) { 409 statfmt++; 410 411 prec = 0; 412 while (isdigit((unsigned)*statfmt)) { 413 prec = (prec * 10) + (*statfmt - '0'); 414 statfmt++; 415 if (prec < 0) 416 goto badfmt; 417 } 418 } 419 420 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 421 #define fmtcasef(x, y, z) case (y): (x) = (z); statfmt++; break 422 switch (*statfmt) { 423 fmtcasef(ofmt, FMT_DECIMAL, FMTF_DECIMAL); 424 fmtcasef(ofmt, FMT_OCTAL, FMTF_OCTAL); 425 fmtcasef(ofmt, FMT_UNSIGNED, FMTF_UNSIGNED); 426 fmtcasef(ofmt, FMT_HEX, FMTF_HEX); 427 fmtcasef(ofmt, FMT_FLOAT, FMTF_FLOAT); 428 fmtcasef(ofmt, FMT_STRING, FMTF_STRING); 429 default: 430 ofmt = 0; 431 break; 432 } 433 434 switch (*statfmt) { 435 fmtcase(hilo, HIGH_PIECE); 436 fmtcase(hilo, MIDDLE_PIECE); 437 fmtcase(hilo, LOW_PIECE); 438 default: 439 hilo = 0; 440 break; 441 } 442 443 switch (*statfmt) { 444 fmtcase(what, SHOW_st_dev); 445 fmtcase(what, SHOW_st_ino); 446 fmtcase(what, SHOW_st_mode); 447 fmtcase(what, SHOW_st_nlink); 448 fmtcase(what, SHOW_st_uid); 449 fmtcase(what, SHOW_st_gid); 450 fmtcase(what, SHOW_st_rdev); 451 fmtcase(what, SHOW_st_atime); 452 fmtcase(what, SHOW_st_mtime); 453 fmtcase(what, SHOW_st_ctime); 454 fmtcase(what, SHOW_st_size); 455 fmtcase(what, SHOW_st_blocks); 456 fmtcase(what, SHOW_st_blksize); 457 fmtcase(what, SHOW_st_flags); 458 fmtcase(what, SHOW_st_gen); 459 fmtcase(what, SHOW_symlink); 460 fmtcase(what, SHOW_filetype); 461 fmtcase(what, SHOW_filename); 462 fmtcase(what, SHOW_sizerdev); 463 default: 464 goto badfmt; 465 } 466 #undef fmtcasef 467 #undef fmtcase 468 469 t = format1(st, 470 file, 471 subfmt, statfmt - subfmt, 472 buf, sizeof(buf), 473 flags, size, prec, ofmt, hilo, what); 474 475 for (i = 0; i < t && i < sizeof(buf); i++) 476 addchar(stdout, buf[i], &nl); 477 478 continue; 479 480 badfmt: 481 errx(1, "%.*s: bad format", 482 (int)(statfmt - subfmt + 1), subfmt); 483 } 484 485 if (!nl && !nonl) 486 (void)fputc('\n', stdout); 487 (void)fflush(stdout); 488 } 489 490 /* 491 * Arranges output according to a single parsed format substring. 492 */ 493 int 494 format1(const struct stat *st, 495 const char *file, 496 const char *fmt, int flen, 497 char *buf, size_t blen, 498 int flags, int size, int prec, int ofmt, 499 int hilo, int what) 500 { 501 u_int64_t data; 502 char *sdata, lfmt[24], tmp[20]; 503 char smode[12], sid[12], path[MAXPATHLEN + 4]; 504 struct passwd *pw; 505 struct group *gr; 506 const struct timespec *tsp; 507 struct timespec ts; 508 struct tm *tm; 509 int l, small, formats; 510 511 tsp = NULL; 512 formats = 0; 513 small = 0; 514 515 /* 516 * First, pick out the data and tweak it based on hilo or 517 * specified output format (symlink output only). 518 */ 519 switch (what) { 520 case SHOW_st_dev: 521 case SHOW_st_rdev: 522 small = (sizeof(st->st_dev) == 4); 523 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 524 sdata = (what == SHOW_st_dev) ? 525 devname(st->st_dev, S_IFBLK) : 526 devname(st->st_rdev, 527 S_ISCHR(st->st_mode) ? S_IFCHR : 528 S_ISBLK(st->st_mode) ? S_IFBLK : 529 0U); 530 if (sdata == NULL) 531 sdata = "???"; 532 if (hilo == HIGH_PIECE) { 533 data = major(data); 534 hilo = 0; 535 } 536 else if (hilo == LOW_PIECE) { 537 data = minor((unsigned)data); 538 hilo = 0; 539 } 540 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 541 FMTF_STRING; 542 if (ofmt == 0) 543 ofmt = FMTF_UNSIGNED; 544 break; 545 case SHOW_st_ino: 546 small = (sizeof(st->st_ino) == 4); 547 data = st->st_ino; 548 sdata = NULL; 549 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 550 if (ofmt == 0) 551 ofmt = FMTF_UNSIGNED; 552 break; 553 case SHOW_st_mode: 554 small = (sizeof(st->st_mode) == 4); 555 data = st->st_mode; 556 strmode(st->st_mode, smode); 557 sdata = smode; 558 l = strlen(sdata); 559 if (sdata[l - 1] == ' ') 560 sdata[--l] = '\0'; 561 if (hilo == HIGH_PIECE) { 562 data >>= 12; 563 sdata += 1; 564 sdata[3] = '\0'; 565 hilo = 0; 566 } 567 else if (hilo == MIDDLE_PIECE) { 568 data = (data >> 9) & 07; 569 sdata += 4; 570 sdata[3] = '\0'; 571 hilo = 0; 572 } 573 else if (hilo == LOW_PIECE) { 574 data &= 0777; 575 sdata += 7; 576 sdata[3] = '\0'; 577 hilo = 0; 578 } 579 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 580 FMTF_STRING; 581 if (ofmt == 0) 582 ofmt = FMTF_OCTAL; 583 break; 584 case SHOW_st_nlink: 585 small = (sizeof(st->st_dev) == 4); 586 data = st->st_nlink; 587 sdata = NULL; 588 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 589 if (ofmt == 0) 590 ofmt = FMTF_UNSIGNED; 591 break; 592 case SHOW_st_uid: 593 small = (sizeof(st->st_uid) == 4); 594 data = st->st_uid; 595 if ((pw = getpwuid(st->st_uid)) != NULL) 596 sdata = pw->pw_name; 597 else { 598 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 599 sdata = sid; 600 } 601 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 602 FMTF_STRING; 603 if (ofmt == 0) 604 ofmt = FMTF_UNSIGNED; 605 break; 606 case SHOW_st_gid: 607 small = (sizeof(st->st_gid) == 4); 608 data = st->st_gid; 609 if ((gr = getgrgid(st->st_gid)) != NULL) 610 sdata = gr->gr_name; 611 else { 612 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 613 sdata = sid; 614 } 615 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 616 FMTF_STRING; 617 if (ofmt == 0) 618 ofmt = FMTF_UNSIGNED; 619 break; 620 case SHOW_st_atime: 621 tsp = &st->st_atimespec; 622 /* FALLTHROUGH */ 623 case SHOW_st_mtime: 624 if (tsp == NULL) 625 tsp = &st->st_mtimespec; 626 /* FALLTHROUGH */ 627 case SHOW_st_ctime: 628 if (tsp == NULL) 629 tsp = &st->st_ctimespec; 630 ts = *tsp; /* copy so we can muck with it */ 631 small = (sizeof(ts.tv_sec) == 4); 632 data = ts.tv_sec; 633 small = 1; 634 tm = localtime(&ts.tv_sec); 635 (void)strftime(path, sizeof(path), timefmt, tm); 636 sdata = path; 637 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX | 638 FMTF_FLOAT | FMTF_STRING; 639 if (ofmt == 0) 640 ofmt = FMTF_DECIMAL; 641 break; 642 case SHOW_st_size: 643 small = (sizeof(st->st_size) == 4); 644 data = st->st_size; 645 sdata = NULL; 646 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 647 if (ofmt == 0) 648 ofmt = FMTF_UNSIGNED; 649 break; 650 case SHOW_st_blocks: 651 small = (sizeof(st->st_blocks) == 4); 652 data = st->st_blocks; 653 sdata = NULL; 654 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 655 if (ofmt == 0) 656 ofmt = FMTF_UNSIGNED; 657 break; 658 case SHOW_st_blksize: 659 small = (sizeof(st->st_blksize) == 4); 660 data = st->st_blksize; 661 sdata = NULL; 662 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 663 if (ofmt == 0) 664 ofmt = FMTF_UNSIGNED; 665 break; 666 case SHOW_st_flags: 667 small = (sizeof(st->st_flags) == 4); 668 data = st->st_flags; 669 sdata = NULL; 670 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 671 if (ofmt == 0) 672 ofmt = FMTF_UNSIGNED; 673 break; 674 case SHOW_st_gen: 675 small = (sizeof(st->st_gen) == 4); 676 data = st->st_gen; 677 sdata = NULL; 678 formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX; 679 if (ofmt == 0) 680 ofmt = FMTF_UNSIGNED; 681 break; 682 case SHOW_symlink: 683 small = 0; 684 data = 0; 685 if (S_ISLNK(st->st_mode)) { 686 snprintf(path, sizeof(path), " -> "); 687 l = readlink(file, path + 4, sizeof(path) - 4); 688 if (l == -1) { 689 linkfail = 1; 690 l = 0; 691 path[0] = '\0'; 692 } 693 path[l + 4] = '\0'; 694 sdata = path + (ofmt == FMTF_STRING ? 0 : 4); 695 } 696 else { 697 linkfail = 1; 698 sdata = ""; 699 } 700 formats = FMTF_STRING; 701 if (ofmt == 0) 702 ofmt = FMTF_STRING; 703 break; 704 case SHOW_filetype: 705 small = 0; 706 data = 0; 707 sdata = smode; 708 sdata[0] = '\0'; 709 if (hilo == 0 || hilo == LOW_PIECE) { 710 switch (st->st_mode & S_IFMT) { 711 case S_IFIFO: (void)strcat(sdata, "|"); break; 712 case S_IFDIR: (void)strcat(sdata, "/"); break; 713 case S_IFREG: 714 if (st->st_mode & 715 (S_IXUSR | S_IXGRP | S_IXOTH)) 716 (void)strcat(sdata, "*"); 717 break; 718 case S_IFLNK: (void)strcat(sdata, "@"); break; 719 case S_IFSOCK: (void)strcat(sdata, "="); break; 720 case S_IFWHT: (void)strcat(sdata, "%"); break; 721 } 722 hilo = 0; 723 } 724 else if (hilo == HIGH_PIECE) { 725 switch (st->st_mode & S_IFMT) { 726 case S_IFIFO: sdata = "Fifo File"; break; 727 case S_IFCHR: sdata = "Character Device"; break; 728 case S_IFDIR: sdata = "Directory"; break; 729 case S_IFBLK: sdata = "Block Device"; break; 730 case S_IFREG: sdata = "Regular File"; break; 731 case S_IFLNK: sdata = "Symbolic Link"; break; 732 case S_IFSOCK: sdata = "Socket"; break; 733 case S_IFWHT: sdata = "Whiteout File"; break; 734 default: sdata = "???"; break; 735 } 736 hilo = 0; 737 } 738 formats = FMTF_STRING; 739 if (ofmt == 0) 740 ofmt = FMTF_STRING; 741 break; 742 case SHOW_filename: 743 small = 0; 744 data = 0; 745 if (file == NULL) 746 (void)strncpy(path, "(stdin)", sizeof(path)); 747 else 748 (void)strncpy(path, file, sizeof(path)); 749 sdata = path; 750 formats = FMTF_STRING; 751 if (ofmt == 0) 752 ofmt = FMTF_STRING; 753 break; 754 case SHOW_sizerdev: 755 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 756 char majdev[20], mindev[20]; 757 int l1, l2; 758 759 l1 = format1(st, 760 file, 761 fmt, flen, 762 majdev, sizeof(majdev), 763 flags, size, prec, 764 ofmt, HIGH_PIECE, SHOW_st_rdev); 765 l2 = format1(st, 766 file, 767 fmt, flen, 768 mindev, sizeof(mindev), 769 flags, size, prec, 770 ofmt, LOW_PIECE, SHOW_st_rdev); 771 return (snprintf(buf, blen, "%.*s,%.*s", 772 l1, majdev, l2, mindev)); 773 } 774 else { 775 return (format1(st, 776 file, 777 fmt, flen, 778 buf, blen, 779 flags, size, prec, 780 ofmt, 0, SHOW_st_size)); 781 } 782 /*NOTREACHED*/ 783 default: 784 errx(1, "%.*s: bad format", (int)flen, fmt); 785 } 786 787 /* 788 * If a subdatum was specified but not supported, or an output 789 * format was selected that is not supported, that's an error. 790 */ 791 if (hilo != 0 || (ofmt & formats) == 0) 792 errx(1, "%.*s: bad format", (int)flen, fmt); 793 794 /* 795 * Assemble the format string for passing to printf(3). 796 */ 797 lfmt[0] = '\0'; 798 (void)strcat(lfmt, "%"); 799 if (flags & FLAG_POUND) 800 (void)strcat(lfmt, "#"); 801 if (flags & FLAG_SPACE) 802 (void)strcat(lfmt, " "); 803 if (flags & FLAG_PLUS) 804 (void)strcat(lfmt, "+"); 805 if (flags & FLAG_MINUS) 806 (void)strcat(lfmt, "-"); 807 if (flags & FLAG_ZERO) 808 (void)strcat(lfmt, "0"); 809 810 /* 811 * Only the timespecs support the FLOAT output format, and that 812 * requires work that differs from the other formats. 813 */ 814 if (ofmt == FMTF_FLOAT) { 815 /* 816 * Nothing after the decimal point, so just print seconds. 817 */ 818 if (prec == 0) { 819 if (size != -1) { 820 (void)snprintf(tmp, sizeof(tmp), "%d", size); 821 (void)strcat(lfmt, tmp); 822 } 823 (void)strcat(lfmt, "d"); 824 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 825 } 826 827 /* 828 * Unspecified precision gets all the precision we have: 829 * 9 digits. 830 */ 831 if (prec == -1) 832 prec = 9; 833 834 /* 835 * Adjust the size for the decimal point and the digits 836 * that will follow. 837 */ 838 size -= prec + 1; 839 840 /* 841 * Any leftover size that's legitimate will be used. 842 */ 843 if (size > 0) { 844 (void)snprintf(tmp, sizeof(tmp), "%d", size); 845 (void)strcat(lfmt, tmp); 846 } 847 (void)strcat(lfmt, "d"); 848 849 /* 850 * The stuff after the decimal point always needs zero 851 * filling. 852 */ 853 (void)strcat(lfmt, ".%0"); 854 855 /* 856 * We can "print" at most nine digits of precision. The 857 * rest we will pad on at the end. 858 */ 859 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 860 (void)strcat(lfmt, tmp); 861 862 /* 863 * For precision of less that nine digits, trim off the 864 * less significant figures. 865 */ 866 for (; prec < 9; prec++) 867 ts.tv_nsec /= 10; 868 869 /* 870 * Use the format, and then tack on any zeroes that 871 * might be required to make up the requested precision. 872 */ 873 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 874 for (; prec > 9 && l < blen; prec--, l++) 875 (void)strcat(buf, "0"); 876 return (l); 877 } 878 879 /* 880 * Add on size and precision, if specified, to the format. 881 */ 882 if (size != -1) { 883 (void)snprintf(tmp, sizeof(tmp), "%d", size); 884 (void)strcat(lfmt, tmp); 885 } 886 if (prec != -1) { 887 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 888 (void)strcat(lfmt, tmp); 889 } 890 891 /* 892 * String output uses the temporary sdata. 893 */ 894 if (ofmt == FMTF_STRING) { 895 if (sdata == NULL) 896 errx(1, "%.*s: bad format", (int)flen, fmt); 897 (void)strcat(lfmt, "s"); 898 return (snprintf(buf, blen, lfmt, sdata)); 899 } 900 901 /* 902 * Ensure that sign extension does not cause bad looking output 903 * for some forms. 904 */ 905 if (small && ofmt != FMTF_DECIMAL) 906 data = (u_int32_t)data; 907 908 /* 909 * The four "numeric" output forms. 910 */ 911 (void)strcat(lfmt, "ll"); 912 switch (ofmt) { 913 case FMTF_DECIMAL: (void)strcat(lfmt, "d"); break; 914 case FMTF_OCTAL: (void)strcat(lfmt, "o"); break; 915 case FMTF_UNSIGNED: (void)strcat(lfmt, "u"); break; 916 case FMTF_HEX: (void)strcat(lfmt, "x"); break; 917 } 918 919 return (snprintf(buf, blen, lfmt, data)); 920 } 921
Indexes created Wed Sep 24 15:09:51 GMT 2025