stat.c revision 97952
1/* $NetBSD: stat.c,v 1.3 2002/05/31 16:45:16 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 1.3 2002/05/31 16:45:16 atatat Exp $"); 42__FBSDID("$FreeBSD: vendor/NetBSD/dist/usr.bin/stat/stat.c 97952 2002-06-06 19:27:17Z dougb $"); 43#endif 44 45#include <sys/types.h> 46#include <sys/param.h> 47#include <sys/stat.h> 48#include <unistd.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 133void usage(void); 134void output(const struct stat *, const char *, 135 const char *, int, int); 136int 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 143char *timefmt; 144 145#define addchar(b, n, l, c, nl) \ 146 do { \ 147 if ((*(n)) < (l)) { \ 148 (b)[(*(n))++] = (c); \ 149 (*nl) = ((c) == '\n'); \ 150 } \ 151 } while (0/*CONSTCOND*/) 152 153int 154main(int argc, char *argv[]) 155{ 156 struct stat st; 157 int ch, rc, errs; 158 int lsF, fmtchar, usestat, fn, nonl; 159 char *statfmt; 160 161 lsF = 0; 162 fmtchar = '\0'; 163 usestat = 0; 164 nonl = 0; 165 statfmt = NULL; 166 timefmt = NULL; 167 168 while ((ch = getopt(argc, argv, "f:FlLnrst:x")) != -1) 169 switch (ch) { 170 case 'F': 171 lsF = 1; 172 break; 173 case 'L': 174 usestat = 1; 175 break; 176 case 'n': 177 nonl = 1; 178 break; 179 case 'f': 180 statfmt = optarg; 181 /* FALLTHROUGH */ 182 case 'l': 183 case 'r': 184 case 's': 185 case 'x': 186 if (fmtchar != 0) 187 errx(1, "can't use format '%c' with '%c'", 188 fmtchar, ch); 189 fmtchar = ch; 190 break; 191 case 't': 192 timefmt = optarg; 193 break; 194 default: 195 usage(); 196 } 197 198 argc -= optind; 199 argv += optind; 200 fn = 1; 201 202 if (fmtchar == '\0') { 203 if (lsF) 204 fmtchar = 'l'; 205 else { 206 fmtchar = 'f'; 207 statfmt = DEF_FORMAT; 208 } 209 } 210 211 if (lsF && fmtchar != 'l') 212 errx(1, "can't use format '%c' with -F", fmtchar); 213 214 switch (fmtchar) { 215 case 'f': 216 /* statfmt already set */ 217 break; 218 case 'l': 219 statfmt = lsF ? LSF_FORMAT : LS_FORMAT; 220 break; 221 case 'r': 222 statfmt = RAW_FORMAT; 223 break; 224 case 's': 225 statfmt = SHELL_FORMAT; 226 break; 227 case 'x': 228 statfmt = LINUX_FORMAT; 229 if (timefmt == NULL) 230 timefmt = "%c"; 231 break; 232 default: 233 usage(); 234 /*NOTREACHED*/ 235 } 236 237 if (timefmt == NULL) 238 timefmt = TIME_FORMAT; 239 240 errs = 0; 241 do { 242 if (argc == 0) 243 rc = fstat(STDIN_FILENO, &st); 244 else if (usestat) 245 rc = stat(argv[0], &st); 246 else 247 rc = lstat(argv[0], &st); 248 249 if (rc == -1) { 250 errs = 1; 251 warn("%s: stat", argc == 0 ? "(stdin)" : argv[0]); 252 } 253 else 254 output(&st, argv[0], statfmt, fn, nonl); 255 256 argv++; 257 argc--; 258 fn++; 259 } while (argc > 0); 260 261 return (errs); 262} 263 264void 265usage(void) 266{ 267 268 (void)fprintf(stderr, 269 "usage: %s [-FlLnrsx] [-f format] [-t timefmt] [file ...]\n", 270 getprogname()); 271 exit(1); 272} 273 274/* 275 * Parses a format string. 276 */ 277void 278output(const struct stat *st, const char *file, 279 const char *statfmt, int fn, int nonl) 280{ 281 int flags, size, prec, ofmt, hilo, what; 282 char buf[4096], subbuf[MAXPATHLEN]; 283 const char *subfmt; 284 int nl, t, i; 285 size_t len; 286 287 len = 0; 288 while (*statfmt != '\0') { 289 290 /* 291 * Non-format characters go straight out. 292 */ 293 if (*statfmt != FMT_MAGIC) { 294 addchar(buf, &len, sizeof(buf), *statfmt, &nl); 295 statfmt++; 296 continue; 297 } 298 299 /* 300 * The current format "substring" starts here, 301 * and then we skip the magic. 302 */ 303 subfmt = statfmt; 304 statfmt++; 305 306 /* 307 * Some simple one-character "formats". 308 */ 309 switch (*statfmt) { 310 case SIMPLE_NEWLINE: 311 addchar(buf, &len, sizeof(buf), '\n', &nl); 312 statfmt++; 313 continue; 314 case SIMPLE_TAB: 315 addchar(buf, &len, sizeof(buf), '\t', &nl); 316 statfmt++; 317 continue; 318 case SIMPLE_PERCENT: 319 addchar(buf, &len, sizeof(buf), '%', &nl); 320 statfmt++; 321 continue; 322 case SIMPLE_NUMBER: { 323 char num[12], *p; 324 325 snprintf(num, sizeof(num), "%d", fn); 326 for (p = &num[0]; *p; p++) 327 addchar(buf, &len, sizeof(buf), *p, &nl); 328 statfmt++; 329 continue; 330 } 331 } 332 333 /* 334 * This must be an actual format string. Format strings are 335 * similar to printf(3) formats up to a point, and are of 336 * the form: 337 * 338 * % required start of format 339 * [-# +0] opt. format characters 340 * size opt. field width 341 * . opt. decimal separator, followed by 342 * prec opt. precision 343 * fmt opt. output specifier (string, numeric, etc.) 344 * sub opt. sub field specifier (high, middle, low) 345 * datum required field specifier (size, mode, etc) 346 * 347 * Only the % and the datum selector are required. All data 348 * have reasonable default output forms. The "sub" specifier 349 * only applies to certain data (mode, dev, rdev, filetype). 350 * The symlink output defaults to STRING, yet will only emit 351 * the leading " -> " if STRING is explicitly specified. The 352 * sizerdev datum will generate rdev output for character or 353 * block devices, and size output for all others. 354 */ 355 flags = 0; 356 do { 357 if (*statfmt == FMT_POUND) 358 flags |= FLAG_POUND; 359 else if (*statfmt == FMT_SPACE) 360 flags |= FLAG_SPACE; 361 else if (*statfmt == FMT_PLUS) 362 flags |= FLAG_PLUS; 363 else if (*statfmt == FMT_ZERO) 364 flags |= FLAG_ZERO; 365 else if (*statfmt == FMT_MINUS) 366 flags |= FLAG_MINUS; 367 else 368 break; 369 statfmt++; 370 } while (1/*CONSTCOND*/); 371 372 size = -1; 373 if (isdigit((unsigned)*statfmt)) { 374 size = 0; 375 while (isdigit((unsigned)*statfmt)) { 376 size = (size * 10) + (*statfmt - '0'); 377 statfmt++; 378 if (size < 0) 379 goto badfmt; 380 } 381 } 382 383 prec = -1; 384 if (*statfmt == FMT_DOT) { 385 statfmt++; 386 387 prec = 0; 388 while (isdigit((unsigned)*statfmt)) { 389 prec = (prec * 10) + (*statfmt - '0'); 390 statfmt++; 391 if (prec < 0) 392 goto badfmt; 393 } 394 } 395 396#define fmtcase(x, y) case (y): (x) = (y); statfmt++; break 397 switch (*statfmt) { 398 fmtcase(ofmt, FMT_DECIMAL); 399 fmtcase(ofmt, FMT_OCTAL); 400 fmtcase(ofmt, FMT_UNSIGNED); 401 fmtcase(ofmt, FMT_HEX); 402 fmtcase(ofmt, FMT_FLOAT); 403 fmtcase(ofmt, FMT_STRING); 404 default: 405 ofmt = 0; 406 break; 407 } 408 409 switch (*statfmt) { 410 fmtcase(hilo, HIGH_PIECE); 411 fmtcase(hilo, MIDDLE_PIECE); 412 fmtcase(hilo, LOW_PIECE); 413 default: 414 hilo = 0; 415 break; 416 } 417 418 switch (*statfmt) { 419 fmtcase(what, SHOW_st_dev); 420 fmtcase(what, SHOW_st_ino); 421 fmtcase(what, SHOW_st_mode); 422 fmtcase(what, SHOW_st_nlink); 423 fmtcase(what, SHOW_st_uid); 424 fmtcase(what, SHOW_st_gid); 425 fmtcase(what, SHOW_st_rdev); 426 fmtcase(what, SHOW_st_atime); 427 fmtcase(what, SHOW_st_mtime); 428 fmtcase(what, SHOW_st_ctime); 429 fmtcase(what, SHOW_st_size); 430 fmtcase(what, SHOW_st_blocks); 431 fmtcase(what, SHOW_st_blksize); 432 fmtcase(what, SHOW_st_flags); 433 fmtcase(what, SHOW_st_gen); 434 fmtcase(what, SHOW_symlink); 435 fmtcase(what, SHOW_filetype); 436 fmtcase(what, SHOW_filename); 437 fmtcase(what, SHOW_sizerdev); 438 default: 439 goto badfmt; 440 } 441#undef fmtcase 442 443 t = format1(st, 444 file, 445 subfmt, statfmt - subfmt, 446 subbuf, sizeof(subbuf), 447 flags, size, prec, ofmt, hilo, what); 448 449 for (i = 0; i < t && i < sizeof(subbuf); i++) 450 addchar(buf, &len, sizeof(buf), subbuf[i], &nl); 451 452 continue; 453 454 badfmt: 455 errx(1, "%.*s: bad format", 456 (int)(statfmt - subfmt + 1), subfmt); 457 } 458 459 (void)write(STDOUT_FILENO, buf, len); 460 if (!nl && !nonl) 461 (void)write(STDOUT_FILENO, "\n", sizeof("\n") - 1); 462} 463 464/* 465 * Arranges output according to a single parsed format substring. 466 */ 467int 468format1(const struct stat *st, 469 const char *file, 470 const char *fmt, int flen, 471 char *buf, size_t blen, 472 int flags, int size, int prec, int ofmt, 473 int hilo, int what) 474{ 475 u_int64_t data; 476 char *sdata, lfmt[24], tmp[20]; 477 char smode[12], sid[12], path[MAXPATHLEN + 4]; 478 struct passwd *pw; 479 struct group *gr; 480 const struct timespec *tsp; 481 struct timespec ts; 482 struct tm *tm; 483 int l, small, formats; 484 485 tsp = NULL; 486 formats = 0; 487 small = 0; 488 489 /* 490 * First, pick out the data and tweak it based on hilo or 491 * specified output format (symlink output only). 492 */ 493 switch (what) { 494 case SHOW_st_dev: 495 case SHOW_st_rdev: 496 small = (sizeof(st->st_dev) == 4); 497 data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev; 498 sdata = (what == SHOW_st_dev) ? 499 devname(st->st_dev, S_IFBLK) : 500 devname(st->st_rdev, 501 S_ISCHR(st->st_mode) ? S_IFCHR : 502 S_ISBLK(st->st_mode) ? S_IFBLK : 503 0U); 504 if (sdata == NULL) 505 sdata = "???"; 506 if (hilo == HIGH_PIECE) { 507 data = major(data); 508 hilo = 0; 509 } 510 else if (hilo == LOW_PIECE) { 511 data = minor((unsigned)data); 512 hilo = 0; 513 } 514 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 515 FMT_STRING; 516 if (ofmt == 0) 517 ofmt = FMT_UNSIGNED; 518 break; 519 case SHOW_st_ino: 520 small = (sizeof(st->st_ino) == 4); 521 data = st->st_ino; 522 sdata = NULL; 523 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 524 if (ofmt == 0) 525 ofmt = FMT_UNSIGNED; 526 break; 527 case SHOW_st_mode: 528 small = (sizeof(st->st_mode) == 4); 529 data = st->st_mode; 530 strmode(st->st_mode, smode); 531 sdata = smode; 532 l = strlen(sdata); 533 if (sdata[l - 1] == ' ') 534 sdata[--l] = '\0'; 535 if (hilo == HIGH_PIECE) { 536 data >>= 12; 537 sdata += 1; 538 sdata[3] = '\0'; 539 hilo = 0; 540 } 541 else if (hilo == MIDDLE_PIECE) { 542 data = (data >> 9) & 07; 543 sdata += 4; 544 sdata[3] = '\0'; 545 hilo = 0; 546 } 547 else if (hilo == LOW_PIECE) { 548 data &= 0777; 549 sdata += 7; 550 sdata[3] = '\0'; 551 hilo = 0; 552 } 553 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 554 FMT_STRING; 555 if (ofmt == 0) 556 ofmt = FMT_OCTAL; 557 break; 558 case SHOW_st_nlink: 559 small = (sizeof(st->st_dev) == 4); 560 data = st->st_nlink; 561 sdata = NULL; 562 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 563 if (ofmt == 0) 564 ofmt = FMT_UNSIGNED; 565 break; 566 case SHOW_st_uid: 567 small = (sizeof(st->st_uid) == 4); 568 data = st->st_uid; 569 if ((pw = getpwuid(st->st_uid)) != NULL) 570 sdata = pw->pw_name; 571 else { 572 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid); 573 sdata = sid; 574 } 575 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 576 FMT_STRING; 577 if (ofmt == 0) 578 ofmt = FMT_UNSIGNED; 579 break; 580 case SHOW_st_gid: 581 small = (sizeof(st->st_gid) == 4); 582 data = st->st_gid; 583 if ((gr = getgrgid(st->st_gid)) != NULL) 584 sdata = gr->gr_name; 585 else { 586 snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid); 587 sdata = sid; 588 } 589 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 590 FMT_STRING; 591 if (ofmt == 0) 592 ofmt = FMT_UNSIGNED; 593 break; 594 case SHOW_st_atime: 595 tsp = &st->st_atimespec; 596 /* FALLTHROUGH */ 597 case SHOW_st_mtime: 598 if (tsp == NULL) 599 tsp = &st->st_mtimespec; 600 /* FALLTHROUGH */ 601 case SHOW_st_ctime: 602 if (tsp == NULL) 603 tsp = &st->st_ctimespec; 604 ts = *tsp; /* copy so we can muck with it */ 605 small = (sizeof(ts.tv_sec) == 4); 606 data = ts.tv_sec; 607 small = 1; 608 tm = localtime(&ts.tv_sec); 609 (void)strftime(path, sizeof(path), timefmt, tm); 610 sdata = path; 611 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX | 612 FMT_FLOAT | FMT_STRING; 613 if (ofmt == 0) 614 ofmt = FMT_DECIMAL; 615 break; 616 case SHOW_st_size: 617 small = (sizeof(st->st_size) == 4); 618 data = st->st_size; 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_blocks: 625 small = (sizeof(st->st_blocks) == 4); 626 data = st->st_blocks; 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_st_blksize: 633 small = (sizeof(st->st_blksize) == 4); 634 data = st->st_blksize; 635 sdata = NULL; 636 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 637 if (ofmt == 0) 638 ofmt = FMT_UNSIGNED; 639 break; 640 case SHOW_st_flags: 641 small = (sizeof(st->st_flags) == 4); 642 data = st->st_flags; 643 sdata = NULL; 644 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 645 if (ofmt == 0) 646 ofmt = FMT_UNSIGNED; 647 break; 648 case SHOW_st_gen: 649 small = (sizeof(st->st_gen) == 4); 650 data = st->st_gen; 651 sdata = NULL; 652 formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX; 653 if (ofmt == 0) 654 ofmt = FMT_UNSIGNED; 655 break; 656 case SHOW_symlink: 657 small = 0; 658 data = 0; 659 if (S_ISLNK(st->st_mode)) { 660 snprintf(path, sizeof(path), " -> "); 661 l = readlink(file, path + 4, sizeof(path) - 4); 662 if (l == -1) { 663 l = 0; 664 path[0] = '\0'; 665 } 666 path[l + 4] = '\0'; 667 sdata = path + (ofmt == FMT_STRING ? 0 : 4); 668 } 669 else 670 sdata = ""; 671 formats = FMT_STRING; 672 if (ofmt == 0) 673 ofmt = FMT_STRING; 674 break; 675 case SHOW_filetype: 676 small = 0; 677 data = 0; 678 sdata = smode; 679 sdata[0] = '\0'; 680 if (hilo == 0 || hilo == LOW_PIECE) { 681 switch (st->st_mode & S_IFMT) { 682 case S_IFIFO: (void)strcat(sdata, "|"); break; 683 case S_IFDIR: (void)strcat(sdata, "/"); break; 684 case S_IFREG: 685 if (st->st_mode & 686 (S_IXUSR | S_IXGRP | S_IXOTH)) 687 (void)strcat(sdata, "*"); 688 break; 689 case S_IFLNK: (void)strcat(sdata, "@"); break; 690 case S_IFSOCK: (void)strcat(sdata, "="); break; 691 case S_IFWHT: (void)strcat(sdata, "%"); break; 692 } 693 hilo = 0; 694 } 695 else if (hilo == HIGH_PIECE) { 696 switch (st->st_mode & S_IFMT) { 697 case S_IFIFO: sdata = "Fifo File"; break; 698 case S_IFCHR: sdata = "Character Device"; break; 699 case S_IFDIR: sdata = "Directory"; break; 700 case S_IFBLK: sdata = "Block Device"; break; 701 case S_IFREG: sdata = "Regular File"; break; 702 case S_IFLNK: sdata = "Symbolic Link"; break; 703 case S_IFSOCK: sdata = "Socket"; break; 704 case S_IFWHT: sdata = "Whiteout File"; break; 705 default: sdata = "???"; break; 706 } 707 hilo = 0; 708 } 709 formats = FMT_STRING; 710 if (ofmt == 0) 711 ofmt = FMT_STRING; 712 break; 713 case SHOW_filename: 714 small = 0; 715 data = 0; 716 if (file == NULL) 717 (void)strncpy(path, "(stdin)", sizeof(path)); 718 else 719 (void)strncpy(path, file, sizeof(path)); 720 sdata = path; 721 formats = FMT_STRING; 722 if (ofmt == 0) 723 ofmt = FMT_STRING; 724 break; 725 case SHOW_sizerdev: 726 if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { 727 char majdev[20], mindev[20]; 728 int l1, l2; 729 730 l1 = format1(st, 731 file, 732 fmt, flen, 733 majdev, sizeof(majdev), 734 flags, size, prec, 735 ofmt, HIGH_PIECE, SHOW_st_rdev); 736 l2 = format1(st, 737 file, 738 fmt, flen, 739 mindev, sizeof(mindev), 740 flags, size, prec, 741 ofmt, LOW_PIECE, SHOW_st_rdev); 742 return (snprintf(buf, blen, "%.*s,%.*s", 743 l1, majdev, l2, mindev)); 744 } 745 else { 746 return (format1(st, 747 file, 748 fmt, flen, 749 buf, blen, 750 flags, size, prec, 751 ofmt, 0, SHOW_st_size)); 752 } 753 /*NOTREACHED*/ 754 default: 755 errx(1, "%.*s: bad format", (int)flen, fmt); 756 } 757 758 /* 759 * If a subdatum was specified but not supported, or an output 760 * format was selected that is not supported, that's an error. 761 */ 762 if (hilo != 0 || (ofmt & formats) == 0) 763 errx(1, "%.*s: bad format", (int)flen, fmt); 764 765 /* 766 * Assemble the format string for passing to printf(3). 767 */ 768 lfmt[0] = '\0'; 769 (void)strcat(lfmt, "%"); 770 if (flags & FLAG_POUND) 771 (void)strcat(lfmt, "#"); 772 if (flags & FLAG_SPACE) 773 (void)strcat(lfmt, " "); 774 if (flags & FLAG_PLUS) 775 (void)strcat(lfmt, "+"); 776 if (flags & FLAG_MINUS) 777 (void)strcat(lfmt, "-"); 778 if (flags & FLAG_ZERO) 779 (void)strcat(lfmt, "0"); 780 781 /* 782 * Only the timespecs support the FLOAT output format, and that 783 * requires work that differs from the other formats. 784 */ 785 if (ofmt == FMT_FLOAT) { 786 /* 787 * Nothing after the decimal point, so just print seconds. 788 */ 789 if (prec == 0) { 790 if (size != -1) { 791 (void)snprintf(tmp, sizeof(tmp), "%d", size); 792 (void)strcat(lfmt, tmp); 793 } 794 (void)strcat(lfmt, "d"); 795 return (snprintf(buf, blen, lfmt, ts.tv_sec)); 796 } 797 798 /* 799 * Unspecified precision gets all the precision we have: 800 * 9 digits. 801 */ 802 if (prec == -1) 803 prec = 9; 804 805 /* 806 * Adjust the size for the decimal point and the digits 807 * that will follow. 808 */ 809 size -= prec + 1; 810 811 /* 812 * Any leftover size that's legitimate will be used. 813 */ 814 if (size > 0) { 815 (void)snprintf(tmp, sizeof(tmp), "%d", size); 816 (void)strcat(lfmt, tmp); 817 } 818 (void)strcat(lfmt, "d"); 819 820 /* 821 * The stuff after the decimal point always needs zero 822 * filling. 823 */ 824 (void)strcat(lfmt, ".%0"); 825 826 /* 827 * We can "print" at most nine digits of precision. The 828 * rest we will pad on at the end. 829 */ 830 (void)snprintf(tmp, sizeof(tmp), "%dd", prec > 9 ? 9 : prec); 831 (void)strcat(lfmt, tmp); 832 833 /* 834 * For precision of less that nine digits, trim off the 835 * less significant figures. 836 */ 837 for (; prec < 9; prec++) 838 ts.tv_nsec /= 10; 839 840 /* 841 * Use the format, and then tack on any zeroes that 842 * might be required to make up the requested precision. 843 */ 844 l = snprintf(buf, blen, lfmt, ts.tv_sec, ts.tv_nsec); 845 for (; prec > 9 && l < blen; prec--, l++) 846 (void)strcat(buf, "0"); 847 return (l); 848 } 849 850 /* 851 * Add on size and precision, if specified, to the format. 852 */ 853 if (size != -1) { 854 (void)snprintf(tmp, sizeof(tmp), "%d", size); 855 (void)strcat(lfmt, tmp); 856 } 857 if (prec != -1) { 858 (void)snprintf(tmp, sizeof(tmp), ".%d", prec); 859 (void)strcat(lfmt, tmp); 860 } 861 862 /* 863 * String output uses the temporary sdata. 864 */ 865 if (ofmt == FMT_STRING) { 866 if (sdata == NULL) 867 errx(1, "%.*s: bad format", (int)flen, fmt); 868 (void)strcat(lfmt, "s"); 869 return (snprintf(buf, blen, lfmt, sdata)); 870 } 871 872 /* 873 * Ensure that sign extension does not cause bad looking output 874 * for some forms. 875 */ 876 if (small && ofmt != FMT_DECIMAL) 877 data = (u_int32_t)data; 878 879 /* 880 * The four "numeric" output forms. 881 */ 882 (void)strcat(lfmt, "ll"); 883 switch (ofmt) { 884 case FMT_DECIMAL: (void)strcat(lfmt, "d"); break; 885 case FMT_OCTAL: (void)strcat(lfmt, "o"); break; 886 case FMT_UNSIGNED: (void)strcat(lfmt, "u"); break; 887 case FMT_HEX: (void)strcat(lfmt, "x"); break; 888 } 889 890 return (snprintf(buf, blen, lfmt, data)); 891} 892