stat.c revision 1.1
1 /* $NetBSD: stat.c,v 1.1 2002/04/27 16:37:19 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 1.1 2002/04/27 16:37:19 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 <err.h> 49 #include <string.h> 50 #include <stdio.h> 51 #include <ctype.h> 52 #include <stddef.h> 53 #include <stdlib.h> 54 #include <pwd.h> 55 #include <grp.h> 56 57 #define DEF_FORMAT \ 58 "%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" %k %b %N" 59 #define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c %k %b %N" 60 #define LS_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%SY" 61 #define LSF_FORMAT "%Sp %l %Su %Sg %Z %Sm %N%T%SY" 62 #define SHELL_FORMAT \ 63 "st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \ 64 "st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \ 65 "st_atimespec=%a st_mtimespec=%m st_ctimespec=%c " \ 66 "st_blksize=%k st_blocks=%b" 67 #define LINUX_FORMAT \ 68 " File: \"%N\"%n" \ 69 " Size: %-11z FileType: %HT%n" \ 70 " Mode: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \ 71 "Device: %Hd,%Ld Inode: %i Links: %l%n" \ 72 "Access: %Sa%n" \ 73 "Modify: %Sm%n" \ 74 "Change: %Sc" 75 76 #define TIME_FORMAT "%b %e %T %Y" 77 78 #define FMT_POUND 0x01 79 #define FMT_SPACE 0x02 80 #define FMT_PLUS 0x04 81 #define FMT_ZERO 0x08 82 #define FMT_MINUS 0x10 83 84 /* 85 * These format characters must all be unique. 86 */ 87 #define SIMPLE_NEWLINE 'n' 88 #define SIMPLE_TAB 't' 89 #define SIMPLE_PERCENT '%' 90 91 #define FMT_DECIMAL 'D' 92 #define FMT_OCTAL 'O' 93 #define FMT_UNSIGNED 'U' 94 #define FMT_HEX 'X' 95 #define FMT_FLOAT 'F' 96 #define FMT_STRING 'S' 97 98 #define HIGH_PIECE 'H' 99 #define MIDDLE_PIECE 'M' 100 #define LOW_PIECE 'L' 101 102 #define SHOW_st_dev 'd' 103 #define SHOW_st_ino 'i' 104 #define SHOW_st_mode 'p' 105 #define SHOW_st_nlink 'l' 106 #define SHOW_st_uid 'u' 107 #define SHOW_st_gid 'g' 108 #define SHOW_st_rdev 'r' 109 #define SHOW_st_atime 'a' 110 #define SHOW_st_mtime 'm' 111 #define SHOW_st_ctime 'c' 112 #define SHOW_st_size 'z' 113 #define SHOW_st_blocks 'b' 114 #define SHOW_st_blksize 'k' 115 #define SHOW_st_flags 'f' 116 #define SHOW_st_gen 'v' 117 #define SHOW_symlink 'Y' 118 #define SHOW_filetype 'T' 119 #define SHOW_filename 'N' 120 #define SHOW_sizerdev 'Z' 121 122 void usage(void); 123 void output(const struct stat *, const char *, 124 const char *, int); 125 int format1(const struct stat *, /* stat info */ 126 const char *, /* the file name */ 127 const char *, int, /* the format string itself */ 128 char *, size_t, /* a place to put the output */ 129 int, int, int, int, /* the parsed format */ 130 int, int); 131 132 char *timefmt; 133 134 #define addchar(b, n, l, c, nl) \ 135 do { \ 136 if ((*(n)) < (l)) { \ 137 (b)[(*(n))++] = (c); \ 138 (*nl) = ((c) == '\n'); \ 139 } \ 140 } while (0/*CONSTCOND*/) 141 142 int 143 main(int argc, char *argv[]) 144 { 145 struct stat st; 146 int ch, rc, errs; 147 int lsF, fmtchar, usestat, nonl; 148 char *statfmt; 149 150 lsF = 0; 151 fmtchar = '\0'; 152 usestat = 0; 153 nonl = 0; 154 statfmt = NULL; 155 timefmt = NULL; 156 157 while ((ch = getopt(argc, argv, "f:FlLnrst:x")) != -1) 158 switch (ch) { 159 case 'F': 160 lsF = 1; 161 break; 162 case 'L': 163 usestat = 1; 164 break; 165 case 'n': 166 nonl = 1; 167 break; 168 case 'f': 169 statfmt = optarg; 170 /* FALLTHROUGH */ 171 case 'l': 172 case 'r': 173 case 's': 174 case 'x': 175 if (fmtchar != 0) 176 errx(1, "can't use format '%c' with '%c'", 177 fmtchar, ch); 178 fmtchar = ch; 179 break; 180 case 't': 181 timefmt = optarg; 182 break; 183 default: 184 usage(); 185 } 186 187 argc -= optind; 188 argv += optind; 189 190 if (fmtchar == '\0') { 191 if (lsF) 192 fmtchar = 'l'; 193 else { 194 fmtchar = 'f'; 195 statfmt = DEF_FORMAT; 196 } 197 } 198 199 if (lsF && fmtchar != 'l') 200 errx(1, "can't use format '%c' with -F", fmtchar); 201 202 switch (fmtchar) { 203 case 'f': 204 /* statfmt already set */ 205 break; 206 case 'l': 207 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 208 break; 209 case 'r': 210 statfmt = RAW_FORMAT; 211 break; 212 case 's': 213 statfmt = SHELL_FORMAT; 214 break; 215 case 'x': 216 statfmt = LINUX_FORMAT; 217 if (timefmt == NULL) 218 timefmt = "%c"; 219 break; 220 default: 221 usage(); 222 /*NOTREACHED*/ 223 } 224 225 if (timefmt == NULL) 226 timefmt = TIME_FORMAT; 227 228 errs = 0; 229 do { 230 if (argc == 0) 231 rc = fstat(STDIN_FILENO, &st); 232 else if (usestat) 233 rc = stat(argv[0], &st); 234 else 235 rc = lstat(argv[0], &st); 236 237 if (rc == -1) { 238 errs = 1; 239 warn("%s: stat", argc == 0 ? "(stdin)" : argv[0]); 240 } 241 else 242 output(&st, argv[0], statfmt, nonl); 243 244 argv++; 245 argc--; 246 } while (argc > 0); 247 248 return (errs); 249 } 250 251 void 252 usage(void) 253 { 254 255 (void)fprintf(stderr, 256 "usage: %s [-FlLnrsx] [-f format] [-t timefmt] [file ...]\n", 257 getprogname()); 258 exit(1); 259 } 260 261 /* 262 * Parses a format string. 263 */ 264 void 265 output(const struct stat *st, const char *file, 266 const char *statfmt, int nonl) 267 { 268 int flags, size, prec, ofmt, hilo, what; 269 char buf[4096], subbuf[MAXPATHLEN]; 270 const char *subfmt; 271 int nl, t, i; 272 size_t len; 273 274 len = 0; 275 while (*statfmt != '\0') { 276 277 /* 278 * Non-format characters go straight out. 279 */ 280 if (*statfmt != '%') { 281 addchar(buf, &len, sizeof(buf), *statfmt, &nl); 282 statfmt++; 283 continue; 284 } 285 286 /* 287 * The current format "substring" starts here, 288 * and then we skip the '%'. 289 */ 290 subfmt = statfmt; 291 statfmt++; 292 293 /* 294 * Some simple one-character "formats". 295 */ 296 switch (*statfmt) { 297 case SIMPLE_NEWLINE: 298 addchar(buf, &len, sizeof(buf), '\n', &nl); 299 statfmt++; 300 continue; 301 case SIMPLE_TAB: 302 addchar(buf, &len, sizeof(buf), '\t', &nl); 303 statfmt++; 304 continue; 305 case SIMPLE_PERCENT: 306 addchar(buf, &len, sizeof(buf), '%', &nl); 307 statfmt++; 308 continue; 309 } 310 311 /* 312 * This must be an actual format string. Format strings are 313 * similar to printf(3) formats up to a point, and are of 314 * the form: 315 * 316 * % required start of format 317 * [-# +0] opt. format characters 318 * size opt. field width 319 * . opt. decimal separator, followed by 320 * prec opt. precision 321 * fmt opt. output specifier (string, numeric, etc.) 322 * sub opt. sub field specifier (high, middle, low) 323 * datum required field specifier (size, mode, etc) 324 * 325 * Only the % and the datum selector are required. All data 326 * have reasonable default output forms. The "sub" specifier 327 * only applies to certain data (mode, dev, rdev, filetype). 328 * The symlink output defaults to STRING, yet will only emit 329 * the leading " -> " if STRING is explicitly specified. The 330 * sizerdev datum will generate rdev output for character or 331 * block devices, and size output for all others. 332 */ 333 flags = 0; 334 do { 335 if (*statfmt == '#') 336 flags |= FMT_POUND; 337 else if (*statfmt == ' ') 338 flags |= FMT_SPACE; 339 else if (*statfmt == '+') 340 flags |= FMT_PLUS; 341 else if (*statfmt == '0') 342 flags |= FMT_ZERO; 343 else if (*statfmt == '-') 344 flags |= FMT_MINUS; 345 else 346 break; 347 statfmt++; 348 } while (1/*CONSTCOND*/); 349 350 size = -1; 351 if (isdigit((unsigned)*statfmt)) { 352 size = 0; 353 while (isdigit((unsigned)*statfmt)) { 354 size = (size * 10) + (*statfmt - '0'); 355 statfmt++; 356 if (size < 0) 357 goto badfmt; 358 } 359 } 360 361 prec = -1; 362 if (*statfmt == '.') { 363 statfmt++; 364 365 prec = 0; 366 while (isdigit((unsigned)*statfmt)) { 367 prec = (prec * 10) + (*statfmt - '0'); 368 statfmt++; 369 if (prec < 0) 370 goto badfmt; 371 } 372 } 373 374 #define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 375 switch (*statfmt) { 376 fmtcase(ofmt, FMT_DECIMAL); 377 fmtcase(ofmt, FMT_OCTAL); 378 fmtcase(ofmt, FMT_UNSIGNED); 379 fmtcase(ofmt, FMT_HEX); 380 fmtcase(ofmt, FMT_FLOAT); 381 fmtcase(ofmt, FMT_STRING); 382 default: 383 ofmt = 0; 384 break; 385 } 386 387 switch (*statfmt) { 388 fmtcase(hilo, HIGH_PIECE); 389 fmtcase(hilo, MIDDLE_PIECE); 390 fmtcase(hilo, LOW_PIECE); 391 default: 392 hilo = 0; 393 break; 394 } 395 396 switch (*statfmt) { 397 fmtcase(what, SHOW_st_dev); 398 fmtcase(what, SHOW_st_ino); 399 fmtcase(what, SHOW_st_mode); 400 fmtcase(what, SHOW_st_nlink); 401 fmtcase(what, SHOW_st_uid); 402 fmtcase(what, SHOW_st_gid); 403 fmtcase(what, SHOW_st_rdev); 404 fmtcase(what, SHOW_st_atime); 405 fmtcase(what, SHOW_st_mtime); 406 fmtcase(what, SHOW_st_ctime); 407 fmtcase(what, SHOW_st_size); 408 fmtcase(what, SHOW_st_blocks); 409 fmtcase(what, SHOW_st_blksize); 410 fmtcase(what, SHOW_st_flags); 411 fmtcase(what, SHOW_st_gen); 412 fmtcase(what, SHOW_symlink); 413 fmtcase(what, SHOW_filetype); 414 fmtcase(what, SHOW_filename); 415 fmtcase(what, SHOW_sizerdev); 416 default: 417 goto badfmt; 418 } 419 #undef fmtcase 420 421 t = format1(st, 422 file, 423 subfmt, statfmt - subfmt, 424 subbuf, sizeof(subbuf), 425 flags, size, prec, ofmt, hilo, what); 426 427 for (i = 0; i < t && i < sizeof(subbuf); i++) 428 addchar(buf, &len, sizeof(buf), subbuf[i], &nl); 429 430 continue; 431 432 badfmt: 433 errx(1, "%.*s: bad format", 434 (int)(statfmt - subfmt + 1), subfmt); 435 } 436 437 (void)write(STDOUT_FILENO, buf, len); 438 if (!nl && !nonl) 439 (void)write(STDOUT_FILENO, "\n", sizeof("\n")); 440 } 441 442 /* 443 * Arranges output according to a single parsed format substring. 444 */ 445 int 446 format1(const struct stat *st, 447 const char *file, 448 const char *fmt, int flen, 449 char *buf, size_t blen, 450 int flags, int size, int prec, int ofmt, 451 int hilo, int what) 452 { 453 u_int64_t data; 454 char *sdata, lfmt[24], tmp[20]; 455 char smode[12], sid[12], path[MAXPATHLEN + 4]; 456 struct passwd *pw; 457 struct group *gr; 458 const struct timespec *tsp; 459 struct timespec ts; 460 struct tm *tm; 461 int l, small, formats; 462 463 tsp = NULL; 464 formats = 0; 465 small = 0; 466 467 /* 468 * First, pick out the data and tweak it based on hilo or 469 * specified output format (symlink output only). 470 */ 471 switch (what) { 472 case SHOW_st_dev: 473 case SHOW_st_rdev: 474 small = (sizeof(st->st_dev) == 4); 475 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 476 sdata = (what == SHOW_st_dev) ? 477 devname(st->st_dev, S_IFBLK) : 478 devname(st->st_rdev, 479 S_ISCHR(st->st_mode) ? S_IFCHR : 480 S_ISBLK(st->st_mode) ? S_IFBLK : 481 0U); 482 if (hilo == HIGH_PIECE) { 483 data = major(data); 484 hilo = 0; 485 } 486 else if (hilo == LOW_PIECE) { 487 data = minor((unsigned)data); 488 hilo = 0; 489 } 490 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 491 FMT_STRING; 492 if (ofmt == 0) 493 ofmt = FMT_UNSIGNED; 494 break; 495 case SHOW_st_ino: 496 small = (sizeof(st->st_ino) == 4); 497 data = st->st_ino; 498 sdata = NULL; 499 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 500 if (ofmt == 0) 501 ofmt = FMT_UNSIGNED; 502 break; 503 case SHOW_st_mode: 504 small = (sizeof(st->st_mode) == 4); 505 data = st->st_mode; 506 strmode(st->st_mode, smode); 507 sdata = smode; 508 l = strlen(sdata); 509 if (sdata[l - 1] == ' ') 510 sdata[--l] = '\0'; 511 if (hilo == HIGH_PIECE) { 512 data >>= 12; 513 sdata += 1; 514 sdata[3] = '\0'; 515 hilo = 0; 516 } 517 else if (hilo == MIDDLE_PIECE) { 518 data &= 07777; 519 sdata += 4; 520 sdata[3] = '\0'; 521 hilo = 0; 522 } 523 else if (hilo == LOW_PIECE) { 524 data &= 07777; 525 sdata += 7; 526 sdata[3] = '\0'; 527 hilo = 0; 528 } 529 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 530 FMT_STRING; 531 if (ofmt == 0) 532 ofmt = FMT_OCTAL; 533 break; 534 case SHOW_st_nlink: 535 small = (sizeof(st->st_dev) == 4); 536 data = st->st_nlink; 537 sdata = NULL; 538 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 539 if (ofmt == 0) 540 ofmt = FMT_UNSIGNED; 541 break; 542 case SHOW_st_uid: 543 small = (sizeof(st->st_uid) == 4); 544 data = st->st_uid; 545 if ((pw = getpwuid(st->st_uid)) != NULL) 546 sdata = pw->pw_name; 547 else { 548 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 549 sdata = sid; 550 } 551 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 552 FMT_STRING; 553 if (ofmt == 0) 554 ofmt = FMT_UNSIGNED; 555 break; 556 case SHOW_st_gid: 557 small = (sizeof(st->st_gid) == 4); 558 data = st->st_gid; 559 if ((gr = getgrgid(st->st_gid)) != NULL) 560 sdata = gr->gr_name; 561 else { 562 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 563 sdata = sid; 564 } 565 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 566 FMT_STRING; 567 if (ofmt == 0) 568 ofmt = FMT_UNSIGNED; 569 break; 570 case SHOW_st_atime: 571 tsp = &st->st_atimespec; 572 /* FALLTHROUGH */ 573 case SHOW_st_mtime: 574 if (tsp == NULL) 575 tsp = &st->st_mtimespec; 576 /* FALLTHROUGH */ 577 case SHOW_st_ctime: 578 if (tsp == NULL) 579 tsp = &st->st_ctimespec; 580 ts = *tsp; /* copy so we can muck with it */ 581 small = (sizeof(ts.tv_sec) == 4); 582 data = ts.tv_sec; 583 small = 1; 584 tm = localtime(&ts.tv_sec); 585 (void)strftime(path, sizeof(path), timefmt, tm); 586 sdata = path; 587 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 588 FMT_FLOAT | FMT_STRING; 589 if (ofmt == 0) 590 ofmt = FMT_DECIMAL; 591 break; 592 case SHOW_st_size: 593 small = (sizeof(st->st_size) == 4); 594 data = st->st_size; 595 sdata = NULL; 596 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 597 if (ofmt == 0) 598 ofmt = FMT_UNSIGNED; 599 break; 600 case SHOW_st_blocks: 601 small = (sizeof(st->st_blocks) == 4); 602 data = st->st_blocks; 603 sdata = NULL; 604 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 605 if (ofmt == 0) 606 ofmt = FMT_UNSIGNED; 607 break; 608 case SHOW_st_blksize: 609 small = (sizeof(st->st_blksize) == 4); 610 data = st->st_blksize; 611 sdata = NULL; 612 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 613 if (ofmt == 0) 614 ofmt = FMT_UNSIGNED; 615 break; 616 case SHOW_st_flags: 617 small = (sizeof(st->st_flags) == 4); 618 data = st->st_flags; 619 sdata = NULL; 620 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 621 if (ofmt == 0) 622 ofmt = FMT_UNSIGNED; 623 break; 624 case SHOW_st_gen: 625 small = (sizeof(st->st_gen) == 4); 626 data = st->st_gen; 627 sdata = NULL; 628 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 629 if (ofmt == 0) 630 ofmt = FMT_UNSIGNED; 631 break; 632 case SHOW_symlink: 633 small = 0; 634 data = 0; 635 if (S_ISLNK(st->st_mode)) { 636 snprintf(path, sizeof(path), " -> "); 637 l = readlink(file, path + 4, sizeof(path) - 4); 638 if (l == -1) { 639 l = 0; 640 path[0] = '\0'; 641 } 642 path[l + 4] = '\0'; 643 sdata = path + (ofmt == FMT_STRING ? 0 : 4); 644 } 645 else 646 sdata = ""; 647 formats = FMT_STRING; 648 if (ofmt == 0) 649 ofmt = FMT_STRING; 650 break; 651 case SHOW_filetype: 652 small = 0; 653 data = 0; 654 sdata = smode; 655 sdata[0] = '\0'; 656 if (hilo == 0 || hilo == LOW_PIECE) { 657 switch (st->st_mode & S_IFMT) { 658 case S_IFIFO: (void)strcat(sdata, "|"); break; 659 case S_IFDIR: (void)strcat(sdata, "/"); break; 660 case S_IFREG: 661 if (st->st_mode & 662 (S_IXUSR | S_IXGRP | S_IXOTH)) 663 (void)strcat(sdata, "*"); 664 break; 665 case S_IFLNK: (void)strcat(sdata, "@"); break; 666 case S_IFSOCK: (void)strcat(sdata, "="); break; 667 case S_IFWHT: (void)strcat(sdata, "%"); break; 668 } 669 hilo = 0; 670 } 671 else if (hilo == HIGH_PIECE) { 672 switch (st->st_mode & S_IFMT) { 673 case S_IFIFO: sdata = "Fifo File"; break; 674 case S_IFCHR: sdata = "Character Device"; break; 675 case S_IFDIR: sdata = "Directory"; break; 676 case S_IFBLK: sdata = "Block Device"; break; 677 case S_IFREG: sdata = "Regular File"; break; 678 case S_IFLNK: sdata = "Symbolic Link"; break; 679 case S_IFSOCK: sdata = "Socket"; break; 680 case S_IFWHT: sdata = "Whiteout File"; break; 681 default: sdata = "???"; break; 682 } 683 hilo = 0; 684 } 685 formats = FMT_STRING; 686 if (ofmt == 0) 687 ofmt = FMT_STRING; 688 break; 689 case SHOW_filename: 690 small = 0; 691 data = 0; 692 if (file == NULL) 693 (void)strncpy(path, "(stdin)", sizeof(path)); 694 else 695 (void)strncpy(path, file, sizeof(path)); 696 sdata = path; 697 formats = FMT_STRING; 698 if (ofmt == 0) 699 ofmt = FMT_STRING; 700 break; 701 case SHOW_sizerdev: 702 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 703 char majdev[20], mindev[20]; 704 int l1, l2; 705 706 l1 = format1(st, 707 file, 708 fmt, flen, 709 majdev, sizeof(majdev), 710 flags, size, prec, 711 ofmt, HIGH_PIECE, SHOW_st_rdev); 712 l2 = format1(st, 713 file, 714 fmt, flen, 715 mindev, sizeof(mindev), 716 flags, size, prec, 717 ofmt, LOW_PIECE, SHOW_st_rdev); 718 return (snprintf(buf, blen, "%.*s,%.*s", 719 l1, majdev, l2, mindev)); 720 } 721 else { 722 return (format1(st, 723 file, 724 fmt, flen, 725 buf, blen, 726 flags, size, prec, 727 ofmt, 0, SHOW_st_size)); 728 } 729 /*NOTREACHED*/ 730 default: 731 errx(1, "%.*s: bad format", (int)flen, fmt); 732 } 733 734 /* 735 * If a subdatum was specified but not supported, or an output 736 * format was selected that is not supported, that's an error. 737 */ 738 if (hilo != 0 || (ofmt & formats) == 0) 739 errx(1, "%.*s: bad format", (int)flen, fmt); 740 741 /* 742 * Assemble the format string for passing to printf(3). 743 */ 744 lfmt[0] = '\0'; 745 (void)strcat(lfmt, "%"); 746 if (flags & FMT_POUND) 747 (void)strcat(lfmt, "#"); 748 if (flags & FMT_SPACE) 749 (void)strcat(lfmt, " "); 750 if (flags & FMT_PLUS) 751 (void)strcat(lfmt, "+"); 752 if (flags & FMT_MINUS) 753 (void)strcat(lfmt, "-"); 754 if (flags & FMT_ZERO) 755 (void)strcat(lfmt, "0"); 756 757 /* 758 * Only the timespecs support the FLOAT output format, and that 759 * requires work that differs from the other formats. 760 */ 761 if (ofmt == FMT_FLOAT) { 762 /* 763 * Nothing after the decimal point, so just print seconds. 764 */ 765 if (prec == 0) { 766 if (size != -1) { 767 (void)snprintf(tmp, sizeof(tmp), "%d", size); 768 (void)strcat(lfmt, tmp); 769 } 770 (void)strcat(lfmt, "d"); 771 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 772 } 773 774 /* 775 * Unspecified precision gets all the precision we have: 776 * 9 digits. 777 */ 778 if (prec == -1) 779 prec = 9; 780 781 /* 782 * Adjust the size for the decimal point and the digits 783 * that will follow. 784 */ 785 size -= prec + 1; 786 787 /* 788 * Any leftover size that's legitimate will be used. 789 */ 790 if (size > 0) { 791 (void)snprintf(tmp, sizeof(tmp), "%d", size); 792 (void)strcat(lfmt, tmp); 793 } 794 (void)strcat(lfmt, "d"); 795 796 /* 797 * The stuff after the decimal point always needs zero 798 * filling. 799 */ 800 (void)strcat(lfmt, ".%0"); 801 802 /* 803 * We can "print" at most nine digits of precision. The 804 * rest we will pad on at the end. 805 */ 806 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 807 (void)strcat(lfmt, tmp); 808 809 /* 810 * For precision of less that nine digits, trim off the 811 * less significant figures. 812 */ 813 for (; prec < 9; prec++) 814 ts.tv_nsec /= 10; 815 816 /* 817 * Use the format, and then tack on any zeroes that 818 * might be required to make up the requested precision. 819 */ 820 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 821 for (; prec > 9 && l < blen; prec--, l++) 822 (void)strcat(buf, "0"); 823 return (l); 824 } 825 826 /* 827 * Add on size and precision, if specified, to the format. 828 */ 829 if (size != -1) { 830 (void)snprintf(tmp, sizeof(tmp), "%d", size); 831 (void)strcat(lfmt, tmp); 832 } 833 if (prec != -1) { 834 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 835 (void)strcat(lfmt, tmp); 836 } 837 838 /* 839 * String output uses the temporary sdata. 840 */ 841 if (ofmt == FMT_STRING) { 842 if (sdata == NULL) 843 errx(1, "%.*s: bad format", (int)flen, fmt); 844 (void)strcat(lfmt, "s"); 845 return (snprintf(buf, blen, lfmt, sdata)); 846 } 847 848 /* 849 * Ensure that sign extension does not cause bad looking output 850 * for some forms. 851 */ 852 if (small && ofmt != FMT_DECIMAL) 853 data = (u_int32_t)data; 854 855 /* 856 * The four "numeric" output forms. 857 */ 858 (void)strcat(lfmt, "ll"); 859 switch (ofmt) { 860 case FMT_DECIMAL: (void)strcat(lfmt, "d"); break; 861 case FMT_OCTAL: (void)strcat(lfmt, "o"); break; 862 case FMT_UNSIGNED: (void)strcat(lfmt, "u"); break; 863 case FMT_HEX: (void)strcat(lfmt, "x"); break; 864 } 865 866 return (snprintf(buf, blen, lfmt, data)); 867 } 868
Indexes created Mon Sep 22 21:09:42 GMT 2025