1 /* 2 * Copyright (c) 1989, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Michael Fischbein. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)print.c 8.4 (Berkeley) 4/17/94 37 * $FreeBSD: src/bin/ls/print.c,v 1.19.2.7 2002/11/17 10:27:34 tjr Exp $ 38 * $DragonFly: src/bin/ls/print.c,v 1.7 2004/11/07 20:54:51 eirikn Exp $ 39 */ 40 41 #include <sys/param.h> 42 #include <sys/stat.h> 43 44 #include <err.h> 45 #include <errno.h> 46 #include <fts.h> 47 #include <math.h> 48 #include <langinfo.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <time.h> 53 #include <unistd.h> 54 #ifdef COLORLS 55 #include <ctype.h> 56 #include <termcap.h> 57 #include <signal.h> 58 #endif 59 60 #include "ls.h" 61 #include "extern.h" 62 63 static int printaname(FTSENT *, u_long, u_long); 64 static void printlink(FTSENT *); 65 static void printtime(time_t); 66 static int printtype(u_int); 67 static void printsize(size_t, off_t); 68 #ifdef COLORLS 69 static void endcolor(int); 70 static int colortype(mode_t); 71 #endif 72 73 #define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT) 74 75 #define KILO_SZ(n) (n) 76 #define MEGA_SZ(n) ((n) * (n)) 77 #define GIGA_SZ(n) ((n) * (n) * (n)) 78 #define TERA_SZ(n) ((n) * (n) * (n) * (n)) 79 #define PETA_SZ(n) ((n) * (n) * (n) * (n) * (n)) 80 81 #define KILO_2_SZ (KILO_SZ(1024ULL)) 82 #define MEGA_2_SZ (MEGA_SZ(1024ULL)) 83 #define GIGA_2_SZ (GIGA_SZ(1024ULL)) 84 #define TERA_2_SZ (TERA_SZ(1024ULL)) 85 #define PETA_2_SZ (PETA_SZ(1024ULL)) 86 87 static unsigned long long vals_base2[] = {1, KILO_2_SZ, MEGA_2_SZ, GIGA_2_SZ, TERA_2_SZ, PETA_2_SZ}; 88 89 typedef enum { 90 NONE, KILO, MEGA, GIGA, TERA, PETA, UNIT_MAX 91 } unit_t; 92 static unit_t unit_adjust(off_t *); 93 94 static int unitp[] = {NONE, KILO, MEGA, GIGA, TERA, PETA}; 95 96 #ifdef COLORLS 97 /* Most of these are taken from <sys/stat.h> */ 98 typedef enum Colors { 99 C_DIR, /* directory */ 100 C_LNK, /* symbolic link */ 101 C_SOCK, /* socket */ 102 C_FIFO, /* pipe */ 103 C_EXEC, /* executable */ 104 C_BLK, /* block special */ 105 C_CHR, /* character special */ 106 C_SUID, /* setuid executable */ 107 C_SGID, /* setgid executable */ 108 C_WSDIR, /* directory writeble to others, with sticky 109 * bit */ 110 C_WDIR, /* directory writeble to others, without 111 * sticky bit */ 112 C_NUMCOLORS /* just a place-holder */ 113 } Colors; 114 115 static const char *defcolors = "exfxcxdxbxegedabagacad"; 116 117 /* colors for file types */ 118 static struct { 119 int num[2]; 120 int bold; 121 } colors[C_NUMCOLORS]; 122 #endif 123 124 void 125 printscol(DISPLAY *dp) 126 { 127 FTSENT *p; 128 129 for (p = dp->list; p; p = p->fts_link) { 130 if (IS_NOPRINT(p)) 131 continue; 132 printaname(p, dp->s_inode, dp->s_block); 133 putchar('\n'); 134 } 135 } 136 137 /* 138 * print name in current style 139 */ 140 int 141 printname(const char *name) 142 { 143 if (f_octal || f_octal_escape) 144 return prn_octal(name); 145 else if (f_nonprint) 146 return prn_printable(name); 147 else 148 return printf("%s", name); 149 } 150 151 void 152 printlong(DISPLAY *dp) 153 { 154 struct stat *sp; 155 FTSENT *p; 156 NAMES *np; 157 char buf[20]; 158 #ifdef COLORLS 159 int color_printed = 0; 160 #endif 161 162 if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) 163 printf("total %lu\n", howmany(dp->btotal, blocksize)); 164 165 for (p = dp->list; p; p = p->fts_link) { 166 if (IS_NOPRINT(p)) 167 continue; 168 sp = p->fts_statp; 169 if (f_inode) 170 printf("%*lu ", dp->s_inode, (u_long)sp->st_ino); 171 if (f_size) 172 printf("%*lld ", 173 dp->s_block, howmany(sp->st_blocks, blocksize)); 174 strmode(sp->st_mode, buf); 175 np = p->fts_pointer; 176 printf("%s %*u %-*s %-*s ", buf, dp->s_nlink, 177 sp->st_nlink, dp->s_user, np->user, dp->s_group, 178 np->group); 179 if (f_flags) 180 printf("%-*s ", dp->s_flags, np->flags); 181 if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) 182 if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0) 183 printf("%3d, 0x%08x ", 184 major(sp->st_rdev), 185 (u_int)minor(sp->st_rdev)); 186 else 187 printf("%3d, %3d ", 188 major(sp->st_rdev), minor(sp->st_rdev)); 189 else if (dp->bcfile) 190 printf("%*s%*lld ", 191 8 - dp->s_size, "", dp->s_size, sp->st_size); 192 else 193 printsize(dp->s_size, sp->st_size); 194 if (f_accesstime) 195 printtime(sp->st_atime); 196 else if (f_statustime) 197 printtime(sp->st_ctime); 198 else 199 printtime(sp->st_mtime); 200 #ifdef COLORLS 201 if (f_color) 202 color_printed = colortype(sp->st_mode); 203 #endif 204 printname(p->fts_name); 205 #ifdef COLORLS 206 if (f_color && color_printed) 207 endcolor(0); 208 #endif 209 if (f_type) 210 printtype(sp->st_mode); 211 if (S_ISLNK(sp->st_mode)) 212 printlink(p); 213 putchar('\n'); 214 } 215 } 216 217 void 218 printstream(DISPLAY *dp) 219 { 220 FTSENT *p; 221 int chcnt; 222 223 for (p = dp->list, chcnt = 0; p; p = p->fts_link) { 224 if (p->fts_number == NO_PRINT) 225 continue; 226 if (strlen(p->fts_name) + chcnt + 227 (p->fts_link ? 2 : 0) >= (unsigned)termwidth) { 228 putchar('\n'); 229 chcnt = 0; 230 } 231 chcnt += printaname(p, dp->s_inode, dp->s_block); 232 if (p->fts_link) { 233 printf(", "); 234 chcnt += 2; 235 } 236 } 237 if (chcnt) 238 putchar('\n'); 239 } 240 241 void 242 printcol(DISPLAY *dp) 243 { 244 static FTSENT **array; 245 static int lastentries = -1; 246 FTSENT *p; 247 FTSENT **narray; 248 int base; 249 int chcnt; 250 int cnt; 251 int col; 252 int colwidth; 253 int endcol; 254 int num; 255 int numcols; 256 int numrows; 257 int row; 258 int tabwidth; 259 260 if (f_notabs) 261 tabwidth = 1; 262 else 263 tabwidth = 8; 264 265 /* 266 * Have to do random access in the linked list -- build a table 267 * of pointers. 268 */ 269 if (dp->entries > lastentries) { 270 lastentries = dp->entries; 271 if ((narray = 272 realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) { 273 warn(NULL); 274 printscol(dp); 275 return; 276 } 277 lastentries = dp->entries; 278 array = narray; 279 } 280 for (p = dp->list, num = 0; p; p = p->fts_link) 281 if (p->fts_number != NO_PRINT) 282 array[num++] = p; 283 284 colwidth = dp->maxlen; 285 if (f_inode) 286 colwidth += dp->s_inode + 1; 287 if (f_size) 288 colwidth += dp->s_block + 1; 289 if (f_type) 290 colwidth += 1; 291 292 colwidth = (colwidth + tabwidth) & ~(tabwidth - 1); 293 if (termwidth < 2 * colwidth) { 294 printscol(dp); 295 return; 296 } 297 numcols = termwidth / colwidth; 298 numrows = num / numcols; 299 if (num % numcols) 300 ++numrows; 301 302 if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) 303 printf("total %lu\n", howmany(dp->btotal, blocksize)); 304 305 /* counter if f_sortacross, else case-by-case */ 306 base = 0; 307 308 for (row = 0; row < numrows; ++row) { 309 endcol = colwidth; 310 if (!f_sortacross) 311 base = row; 312 for (col = 0, chcnt = 0; col < numcols; ++col) { 313 chcnt += printaname(array[base], dp->s_inode, 314 dp->s_block); 315 if (f_sortacross) 316 base++; 317 else 318 base += numrows; 319 if (base >= num) 320 break; 321 while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1))) 322 <= endcol) { 323 if (f_sortacross && col + 1 >= numcols) 324 break; 325 putchar(f_notabs ? ' ' : '\t'); 326 chcnt = cnt; 327 } 328 endcol += colwidth; 329 } 330 putchar('\n'); 331 } 332 } 333 334 /* 335 * print [inode] [size] name 336 * return # of characters printed, no trailing characters. 337 */ 338 static int 339 printaname(FTSENT *p, u_long inodefield, u_long sizefield) 340 { 341 struct stat *sp; 342 int chcnt; 343 #ifdef COLORLS 344 int color_printed = 0; 345 #endif 346 347 sp = p->fts_statp; 348 chcnt = 0; 349 if (f_inode) 350 chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino); 351 if (f_size) 352 chcnt += printf("%*lld ", 353 (int)sizefield, howmany(sp->st_blocks, blocksize)); 354 #ifdef COLORLS 355 if (f_color) 356 color_printed = colortype(sp->st_mode); 357 #endif 358 chcnt += printname(p->fts_name); 359 #ifdef COLORLS 360 if (f_color && color_printed) 361 endcolor(0); 362 #endif 363 if (f_type) 364 chcnt += printtype(sp->st_mode); 365 return (chcnt); 366 } 367 368 static void 369 printtime(time_t ftime) 370 { 371 char longstring[80]; 372 static time_t now; 373 const char *format; 374 static int d_first = -1; 375 376 if (d_first < 0) 377 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 378 if (now == 0) 379 now = time(NULL); 380 381 #define SIXMONTHS ((365 / 2) * 86400) 382 if (f_sectime) 383 /* mmm dd hh:mm:ss yyyy || dd mmm hh:mm:ss yyyy */ 384 format = d_first ? "%e %b %T %Y " : "%b %e %T %Y "; 385 else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS) 386 /* mmm dd hh:mm || dd mmm hh:mm */ 387 format = d_first ? "%e %b %R " : "%b %e %R "; 388 else 389 /* mmm dd yyyy || dd mmm yyyy */ 390 format = d_first ? "%e %b %Y " : "%b %e %Y "; 391 strftime(longstring, sizeof(longstring), format, localtime(&ftime)); 392 fputs(longstring, stdout); 393 } 394 395 static int 396 printtype(u_int mode) 397 { 398 399 if (f_slash) { 400 if ((mode & S_IFMT) == S_IFDIR) { 401 putchar('/'); 402 return (1); 403 } 404 return (0); 405 } 406 407 switch (mode & S_IFMT) { 408 case S_IFDIR: 409 putchar('/'); 410 return (1); 411 case S_IFIFO: 412 putchar('|'); 413 return (1); 414 case S_IFLNK: 415 putchar('@'); 416 return (1); 417 case S_IFSOCK: 418 putchar('='); 419 return (1); 420 case S_IFWHT: 421 putchar('%'); 422 return (1); 423 default: 424 break; 425 } 426 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 427 putchar('*'); 428 return (1); 429 } 430 return (0); 431 } 432 433 #ifdef COLORLS 434 static int 435 putch(int c) 436 { 437 putchar(c); 438 return 0; 439 } 440 441 static int 442 writech(int c) 443 { 444 char tmp = c; 445 446 write(STDOUT_FILENO, &tmp, 1); 447 return 0; 448 } 449 450 static void 451 printcolor(Colors c) 452 { 453 char *ansiseq; 454 455 if (colors[c].bold) 456 tputs(enter_bold, 1, putch); 457 458 if (colors[c].num[0] != -1) { 459 ansiseq = tgoto(ansi_fgcol, 0, colors[c].num[0]); 460 if (ansiseq) 461 tputs(ansiseq, 1, putch); 462 } 463 if (colors[c].num[1] != -1) { 464 ansiseq = tgoto(ansi_bgcol, 0, colors[c].num[1]); 465 if (ansiseq) 466 tputs(ansiseq, 1, putch); 467 } 468 } 469 470 static void 471 endcolor(int sig) 472 { 473 tputs(ansi_coloff, 1, sig ? writech : putch); 474 tputs(attrs_off, 1, sig ? writech : putch); 475 } 476 477 static int 478 colortype(mode_t mode) 479 { 480 switch (mode & S_IFMT) { 481 case S_IFDIR: 482 if (mode & S_IWOTH) 483 if (mode & S_ISTXT) 484 printcolor(C_WSDIR); 485 else 486 printcolor(C_WDIR); 487 else 488 printcolor(C_DIR); 489 return (1); 490 case S_IFLNK: 491 printcolor(C_LNK); 492 return (1); 493 case S_IFSOCK: 494 printcolor(C_SOCK); 495 return (1); 496 case S_IFIFO: 497 printcolor(C_FIFO); 498 return (1); 499 case S_IFBLK: 500 printcolor(C_BLK); 501 return (1); 502 case S_IFCHR: 503 printcolor(C_CHR); 504 return (1); 505 } 506 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 507 if (mode & S_ISUID) 508 printcolor(C_SUID); 509 else if (mode & S_ISGID) 510 printcolor(C_SGID); 511 else 512 printcolor(C_EXEC); 513 return (1); 514 } 515 return (0); 516 } 517 518 void 519 parsecolors(const char *cs) 520 { 521 int i; 522 int j; 523 int len; 524 char c[2]; 525 short legacy_warn = 0; 526 527 if (cs == NULL) 528 cs = ""; /* LSCOLORS not set */ 529 len = strlen(cs); 530 for (i = 0; i < C_NUMCOLORS; i++) { 531 colors[i].bold = 0; 532 533 if (len <= 2 * i) { 534 c[0] = defcolors[2 * i]; 535 c[1] = defcolors[2 * i + 1]; 536 } else { 537 c[0] = cs[2 * i]; 538 c[1] = cs[2 * i + 1]; 539 } 540 for (j = 0; j < 2; j++) { 541 /* Legacy colours used 0-7 */ 542 if (c[j] >= '0' && c[j] <= '7') { 543 colors[i].num[j] = c[j] - '0'; 544 if (!legacy_warn) { 545 fprintf(stderr, 546 "warn: LSCOLORS should use " 547 "characters a-h instead of 0-9 (" 548 "see the manual page)\n"); 549 } 550 legacy_warn = 1; 551 } else if (c[j] >= 'a' && c[j] <= 'h') 552 colors[i].num[j] = c[j] - 'a'; 553 else if (c[j] >= 'A' && c[j] <= 'H') { 554 colors[i].num[j] = c[j] - 'A'; 555 colors[i].bold = 1; 556 } else if (tolower((unsigned char)c[j] == 'x')) 557 colors[i].num[j] = -1; 558 else { 559 fprintf(stderr, 560 "error: invalid character '%c' in LSCOLORS" 561 " env var\n", c[j]); 562 colors[i].num[j] = -1; 563 } 564 } 565 } 566 } 567 568 void 569 colorquit(int sig) 570 { 571 endcolor(sig); 572 573 signal(sig, SIG_DFL); 574 kill(getpid(), sig); 575 } 576 577 #endif /* COLORLS */ 578 579 static void 580 printlink(FTSENT *p) 581 { 582 int lnklen; 583 char name[MAXPATHLEN + 1]; 584 char path[MAXPATHLEN + 1]; 585 586 if (p->fts_level == FTS_ROOTLEVEL) 587 snprintf(name, sizeof(name), "%s", p->fts_name); 588 else 589 snprintf(name, sizeof(name), 590 "%s/%s", p->fts_parent->fts_accpath, p->fts_name); 591 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) { 592 fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno)); 593 return; 594 } 595 path[lnklen] = '\0'; 596 printf(" -> "); 597 printname(path); 598 } 599 600 static void 601 printsize(size_t width, off_t bytes) 602 { 603 unit_t unit; 604 605 if (f_humanval) { 606 unit = unit_adjust(&bytes); 607 608 if (bytes == 0) 609 printf("%*s ", width, "0B"); 610 else 611 printf("%*lld%c ", width - 1, bytes, 612 "BKMGTPE"[unit]); 613 } else 614 printf("%*lld ", width, bytes); 615 } 616 617 /* 618 * Output in "human-readable" format. Uses 3 digits max and puts 619 * unit suffixes at the end. Makes output compact and easy to read, 620 * especially on huge disks. 621 * 622 */ 623 static unit_t 624 unit_adjust(off_t *val) 625 { 626 double abval; 627 unit_t unit; 628 unsigned int unit_sz; 629 630 abval = fabs((double)*val); 631 632 unit_sz = abval ? ilogb(abval) / 10 : 0; 633 634 if (unit_sz >= UNIT_MAX) { 635 unit = NONE; 636 } else { 637 unit = unitp[unit_sz]; 638 *val /= (double)vals_base2[unit_sz]; 639 } 640 641 return (unit); 642 } 643