1 /* $NetBSD: print.c,v 1.59 2024/12/11 12:56:31 simonb Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Michael Fischbein. 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)print.c 8.5 (Berkeley) 7/28/94"; 39 #else 40 __RCSID("$NetBSD: print.c,v 1.59 2024/12/11 12:56:31 simonb Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 #ifndef SMALL 47 #include <sys/acl.h> 48 #endif 49 50 #include <err.h> 51 #include <errno.h> 52 #include <inttypes.h> 53 #include <fts.h> 54 #include <grp.h> 55 #include <pwd.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <time.h> 60 #include <tzfile.h> 61 #include <unistd.h> 62 #include <util.h> 63 64 #include "ls.h" 65 #include "extern.h" 66 67 extern int termwidth; 68 69 static int printaname(FTSENT *, int, int); 70 static void printlink(FTSENT *); 71 static void printtime(time_t); 72 static void printtotal(DISPLAY *dp); 73 static int printtype(u_int); 74 #ifndef SMALL 75 static void aclmode(char *, const FTSENT *); 76 #endif 77 78 static time_t now; 79 80 #define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT) 81 82 static int 83 safe_printpath(const FTSENT *p) { 84 int chcnt; 85 86 if (f_fullpath) { 87 chcnt = safe_print(p->fts_path); 88 chcnt += safe_print("/"); 89 } else 90 chcnt = 0; 91 return chcnt + safe_print(p->fts_name); 92 } 93 94 static int 95 printescapedpath(const FTSENT *p) { 96 int chcnt; 97 98 if (f_fullpath) { 99 chcnt = printescaped(p->fts_path); 100 chcnt += printescaped("/"); 101 } else 102 chcnt = 0; 103 104 return chcnt + printescaped(p->fts_name); 105 } 106 107 static int 108 printpath(const FTSENT *p) { 109 if (f_fullpath) 110 return printf("%s/%s", p->fts_path, p->fts_name); 111 else 112 return printf("%s", p->fts_name); 113 } 114 115 void 116 printscol(DISPLAY *dp) 117 { 118 FTSENT *p; 119 120 for (p = dp->list; p; p = p->fts_link) { 121 if (IS_NOPRINT(p)) 122 continue; 123 (void)printaname(p, dp->s_inode, dp->s_block); 124 (void)putchar('\n'); 125 } 126 } 127 128 void 129 printlong(DISPLAY *dp) 130 { 131 struct stat *sp; 132 FTSENT *p; 133 NAMES *np; 134 char buf[20], szbuf[5]; 135 136 now = time(NULL); 137 138 if (!f_leafonly) 139 printtotal(dp); /* "total: %u\n" */ 140 141 for (p = dp->list; p; p = p->fts_link) { 142 if (IS_NOPRINT(p)) 143 continue; 144 sp = p->fts_statp; 145 if (f_inode) 146 (void)printf("%*"PRIu64" ", dp->s_inode, sp->st_ino); 147 if (f_size) { 148 if (f_humanize) { 149 if ((humanize_number(szbuf, sizeof(szbuf), 150 sp->st_blocks * S_BLKSIZE, 151 "", HN_AUTOSCALE, 152 (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1) 153 err(1, "humanize_number"); 154 (void)printf("%*s ", dp->s_block, szbuf); 155 } else { 156 (void)printf(f_commas ? "%'*llu " : "%*llu ", 157 dp->s_block, 158 (unsigned long long)howmany(sp->st_blocks, 159 blocksize)); 160 } 161 } 162 (void)strmode(sp->st_mode, buf); 163 #ifndef SMALL 164 aclmode(buf, p); 165 #endif 166 np = p->fts_pointer; 167 (void)printf("%s %*lu ", buf, dp->s_nlink, 168 (unsigned long)sp->st_nlink); 169 if (!f_grouponly) 170 (void)printf("%-*s ", dp->s_user, np->user); 171 (void)printf("%-*s ", dp->s_group, np->group); 172 if (f_flags) 173 (void)printf("%-*s ", dp->s_flags, np->flags); 174 if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) 175 (void)printf("%*lld, %*lld ", 176 dp->s_major, (long long)major(sp->st_rdev), 177 dp->s_minor, (long long)minor(sp->st_rdev)); 178 else 179 if (f_humanize) { 180 if ((humanize_number(szbuf, sizeof(szbuf), 181 sp->st_size, "", HN_AUTOSCALE, 182 (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1) 183 err(1, "humanize_number"); 184 (void)printf("%*s ", dp->s_size, szbuf); 185 } else { 186 (void)printf(f_commas ? "%'*llu " : "%*llu ", 187 dp->s_size, (unsigned long long) 188 sp->st_size); 189 } 190 if (f_accesstime) 191 printtime(sp->st_atime); 192 else if (f_statustime) 193 printtime(sp->st_ctime); 194 else 195 printtime(sp->st_mtime); 196 if (f_octal || f_octal_escape) 197 (void)safe_printpath(p); 198 else if (f_nonprint) 199 (void)printescapedpath(p); 200 else 201 (void)printpath(p); 202 203 if (f_type || (f_typedir && S_ISDIR(sp->st_mode))) 204 (void)printtype(sp->st_mode); 205 if (S_ISLNK(sp->st_mode)) 206 printlink(p); 207 (void)putchar('\n'); 208 } 209 } 210 211 void 212 printcol(DISPLAY *dp) 213 { 214 static FTSENT **array; 215 static int lastentries = -1; 216 FTSENT *p; 217 int base, chcnt, col, colwidth, num; 218 int numcols, numrows, row; 219 220 colwidth = dp->maxlen; 221 if (f_inode) 222 colwidth += dp->s_inode + 1; 223 if (f_size) { 224 if (f_humanize) 225 colwidth += dp->s_size + 1; 226 else 227 colwidth += dp->s_block + 1; 228 } 229 if (f_type || f_typedir) 230 colwidth += 1; 231 232 colwidth += 1; 233 234 printtotal(dp); /* "total: %u\n" */ 235 236 if (termwidth < 2 * colwidth) { 237 printscol(dp); 238 return; 239 } 240 241 /* 242 * Have to do random access in the linked list -- build a table 243 * of pointers. 244 */ 245 if (dp->entries > lastentries) { 246 FTSENT **newarray; 247 248 newarray = realloc(array, dp->entries * sizeof(FTSENT *)); 249 if (newarray == NULL) { 250 warn(NULL); 251 printscol(dp); 252 return; 253 } 254 lastentries = dp->entries; 255 array = newarray; 256 } 257 for (p = dp->list, num = 0; p; p = p->fts_link) 258 if (p->fts_number != NO_PRINT) 259 array[num++] = p; 260 261 numcols = termwidth / colwidth; 262 colwidth = termwidth / numcols; /* spread out if possible */ 263 numrows = num / numcols; 264 if (num % numcols) 265 ++numrows; 266 267 for (row = 0; row < numrows; ++row) { 268 for (base = row, chcnt = col = 0; col < numcols; ++col) { 269 chcnt = printaname(array[base], dp->s_inode, 270 f_humanize ? dp->s_size : dp->s_block); 271 if ((base += numrows) >= num) 272 break; 273 while (chcnt++ < colwidth) 274 (void)putchar(' '); 275 } 276 (void)putchar('\n'); 277 } 278 } 279 280 void 281 printacol(DISPLAY *dp) 282 { 283 FTSENT *p; 284 int chcnt, col, colwidth; 285 int numcols; 286 287 colwidth = dp->maxlen; 288 if (f_inode) 289 colwidth += dp->s_inode + 1; 290 if (f_size) { 291 if (f_humanize) 292 colwidth += dp->s_size + 1; 293 else 294 colwidth += dp->s_block + 1; 295 } 296 if (f_type || f_typedir) 297 colwidth += 1; 298 299 colwidth += 1; 300 301 printtotal(dp); /* "total: %u\n" */ 302 303 if (termwidth < 2 * colwidth) { 304 printscol(dp); 305 return; 306 } 307 308 numcols = termwidth / colwidth; 309 colwidth = termwidth / numcols; /* spread out if possible */ 310 311 chcnt = col = 0; 312 for (p = dp->list; p; p = p->fts_link) { 313 if (IS_NOPRINT(p)) 314 continue; 315 if (col >= numcols) { 316 chcnt = col = 0; 317 (void)putchar('\n'); 318 } 319 chcnt = printaname(p, dp->s_inode, 320 f_humanize ? dp->s_size : dp->s_block); 321 while (chcnt++ < colwidth) 322 (void)putchar(' '); 323 col++; 324 } 325 (void)putchar('\n'); 326 } 327 328 void 329 printstream(DISPLAY *dp) 330 { 331 FTSENT *p; 332 int col; 333 int extwidth; 334 335 extwidth = 0; 336 if (f_inode) 337 extwidth += dp->s_inode + 1; 338 if (f_size) { 339 if (f_humanize) 340 extwidth += dp->s_size + 1; 341 else 342 extwidth += dp->s_block + 1; 343 } 344 if (f_type) 345 extwidth += 1; 346 347 for (col = 0, p = dp->list; p != NULL; p = p->fts_link) { 348 if (IS_NOPRINT(p)) 349 continue; 350 if (col > 0) { 351 (void)putchar(','), col++; 352 if (col + 1 + extwidth + (int)p->fts_namelen >= termwidth) 353 (void)putchar('\n'), col = 0; 354 else 355 (void)putchar(' '), col++; 356 } 357 col += printaname(p, dp->s_inode, 358 f_humanize ? dp->s_size : dp->s_block); 359 } 360 (void)putchar('\n'); 361 } 362 363 /* 364 * print [inode] [size] name 365 * return # of characters printed, no trailing characters. 366 */ 367 static int 368 printaname(FTSENT *p, int inodefield, int sizefield) 369 { 370 struct stat *sp; 371 int chcnt; 372 char szbuf[5]; 373 374 sp = p->fts_statp; 375 chcnt = 0; 376 if (f_inode) 377 chcnt += printf("%*"PRIu64" ", inodefield, sp->st_ino); 378 if (f_size) { 379 if (f_humanize) { 380 if ((humanize_number(szbuf, sizeof(szbuf), sp->st_size, 381 "", HN_AUTOSCALE, 382 (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1) 383 err(1, "humanize_number"); 384 chcnt += printf("%*s ", sizefield, szbuf); 385 } else { 386 chcnt += printf(f_commas ? "%'*llu " : "%*llu ", 387 sizefield, (unsigned long long) 388 howmany(sp->st_blocks, blocksize)); 389 } 390 } 391 if (f_octal || f_octal_escape) 392 chcnt += safe_printpath(p); 393 else if (f_nonprint) 394 chcnt += printescapedpath(p); 395 else 396 chcnt += printpath(p); 397 if (f_type || (f_typedir && S_ISDIR(sp->st_mode))) 398 chcnt += printtype(sp->st_mode); 399 return (chcnt); 400 } 401 402 static void 403 printtime(time_t ftime) 404 { 405 int i; 406 const char *longstring; 407 408 if ((longstring = ctime(&ftime)) == NULL) { 409 /* 012345678901234567890123 */ 410 longstring = "????????????????????????"; 411 } 412 for (i = 4; i < 11; ++i) 413 (void)putchar(longstring[i]); 414 415 #define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY) 416 if (f_sectime) 417 for (i = 11; i < 24; i++) 418 (void)putchar(longstring[i]); 419 else if (ftime + SIXMONTHS > now && ftime - SIXMONTHS < now) 420 for (i = 11; i < 16; ++i) 421 (void)putchar(longstring[i]); 422 else { 423 (void)putchar(' '); 424 for (i = 20; i < 24; ++i) 425 (void)putchar(longstring[i]); 426 } 427 (void)putchar(' '); 428 } 429 430 /* 431 * Display total used disk space in the form "total: %u\n". 432 * Note: POSIX (IEEE Std 1003.1-2001) says this should be always in 512 blocks, 433 * but we humanise it with -h, or separate it with commas with -M, and use 1024 434 * with -k. 435 */ 436 static void 437 printtotal(DISPLAY *dp) 438 { 439 char szbuf[5]; 440 441 if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) { 442 if (f_humanize) { 443 if ((humanize_number(szbuf, sizeof(szbuf), 444 dp->btotal * POSIX_BLOCK_SIZE, 445 "", HN_AUTOSCALE, 446 (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1) 447 err(1, "humanize_number"); 448 (void)printf("total %s\n", szbuf); 449 } else { 450 (void)printf(f_commas ? "total %'llu\n" : 451 "total %llu\n", (unsigned long long) 452 howmany(dp->btotal, blocksize)); 453 } 454 } 455 } 456 457 static int 458 printtype(u_int mode) 459 { 460 switch (mode & S_IFMT) { 461 case S_IFDIR: 462 (void)putchar('/'); 463 return (1); 464 case S_IFIFO: 465 (void)putchar('|'); 466 return (1); 467 case S_IFLNK: 468 (void)putchar('@'); 469 return (1); 470 case S_IFSOCK: 471 (void)putchar('='); 472 return (1); 473 case S_IFWHT: 474 (void)putchar('%'); 475 return (1); 476 } 477 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 478 (void)putchar('*'); 479 return (1); 480 } 481 return (0); 482 } 483 484 static void 485 printlink(FTSENT *p) 486 { 487 int lnklen; 488 char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1]; 489 490 if (p->fts_level == FTS_ROOTLEVEL) 491 (void)snprintf(name, sizeof(name), "%s", p->fts_name); 492 else 493 (void)snprintf(name, sizeof(name), 494 "%s/%s", p->fts_parent->fts_accpath, p->fts_name); 495 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) { 496 (void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno)); 497 return; 498 } 499 path[lnklen] = '\0'; 500 (void)printf(" -> "); 501 if (f_octal || f_octal_escape) 502 (void)safe_print(path); 503 else if (f_nonprint) 504 (void)printescaped(path); 505 else 506 (void)printf("%s", path); 507 } 508 509 #ifndef SMALL 510 /* 511 * Add a + after the standard rwxrwxrwx mode if the file has an 512 * ACL. strmode() reserves space at the end of the string. 513 */ 514 static void 515 aclmode(char *buf, const FTSENT *p) 516 { 517 char name[MAXPATHLEN + 1]; 518 int ret, trivial; 519 static dev_t previous_dev = NODEV; 520 static int supports_acls = -1; 521 static int type = ACL_TYPE_ACCESS; 522 acl_t facl; 523 524 /* 525 * XXX: ACLs are not supported on whiteouts and device files 526 * residing on UFS. 527 */ 528 if (S_ISCHR(p->fts_statp->st_mode) || S_ISBLK(p->fts_statp->st_mode) || 529 S_ISWHT(p->fts_statp->st_mode)) 530 return; 531 532 if (previous_dev == p->fts_statp->st_dev && supports_acls == 0) 533 return; 534 535 if (p->fts_level == FTS_ROOTLEVEL) 536 snprintf(name, sizeof(name), "%s", p->fts_name); 537 else 538 snprintf(name, sizeof(name), "%s/%s", 539 p->fts_parent->fts_accpath, p->fts_name); 540 541 if (supports_acls == -1 || previous_dev != p->fts_statp->st_dev) { 542 previous_dev = p->fts_statp->st_dev; 543 supports_acls = 0; 544 545 ret = lpathconf(name, _PC_ACL_NFS4); 546 if (ret > 0) { 547 type = ACL_TYPE_NFS4; 548 supports_acls = 1; 549 } else if (ret < 0 && errno != EINVAL) { 550 warn("%s", name); 551 return; 552 } 553 if (supports_acls == 0) { 554 ret = lpathconf(name, _PC_ACL_EXTENDED); 555 if (ret > 0) { 556 type = ACL_TYPE_ACCESS; 557 supports_acls = 1; 558 } else if (ret < 0 && errno != EINVAL) { 559 warn("%s", name); 560 return; 561 } 562 } 563 } 564 if (supports_acls == 0) 565 return; 566 facl = acl_get_link_np(name, type); 567 if (facl == NULL) { 568 warn("%s", name); 569 return; 570 } 571 if (acl_is_trivial_np(facl, &trivial)) { 572 acl_free(facl); 573 warn("%s", name); 574 return; 575 } 576 if (!trivial) 577 buf[10] = '+'; 578 acl_free(facl); 579 } 580 #endif 581
Indexes created Sun Sep 21 19:09:51 GMT 2025